Combined telescopic folding bicycle

Abstract

The invention relates to a combined telescopic folding bicycle. A stand pipe support below a bicycle saddle 39 is changed into a double-stand-pipe support 28. A bicycle beam is changed into a telescopic tubular beam consisting of a first tubular beam 14, a second tubular beam 15 and a third tubular beam 16. Two vertical pipes on a double-vertical-pipe support 28 of the backrest type saddle 39 are connected with connecting frames 45 arranged on the two sides of the third-section tubular beam 16. And the two sections of handlebars 1 are arranged in the connecting box 2. And a connecting frame 6 below the vertical pipe 5 is connected with a connecting frame 7 arranged at the upper end of a handlebar 91. And the pedal device 11 is connected with a connecting frame 9 arranged on a head tube 8 above the front wheel. And the front part of the rear wheel bracket 23 is connected with the bottom of the third tubular beam 16 to form the backrest type bicycle. A pedal device 11 is detached from a connecting frame 9 on a head pipe 8 and then connected with a connecting frame 47 below the front portion of a rear wheel support 23, and a backrest type saddle 39 on a double-vertical-pipe support 28 is replaced by a riding type saddle 48. Therefore, the bicycle is converted into a riding type bicycle.

Description

Technical Field

[0001] The invention relates to a novel bicycle, which belongs to a combined telescopic folding bicycle. Background Art

[0002] Bicycles are an important means of transportation and fitness in people's lives. Nowadays, common bicycles cannot be telescopic or foldable, and the same bicycle has only a single sitting-style riding method.

[0003] The purpose of the present invention is to change the current bicycle which cannot be telescopic and folded and has a single riding method. By changing the vertical tube bracket under the bicycle seat into a double vertical tube bracket, the bicycle beam is changed into a telescopic beam. The backrest type bicycle pedal device is connected to the connecting frame arranged on the head tube above the front wheel, and the front part of the rear wheel bracket is connected to the bottom of the telescopic beam under the seat. The backrest type bicycle pedal device is removed from the connecting frame on the head tube, and then connected to the connecting frame arranged below the front part of the rear wheel bracket. In this way, a sitting type bicycle is formed, so that the same bicycle can be ridden in two ways, and people's love for bicycles is also increased. Summary of the invention

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] The bicycle frame is changed into a telescopic tubular beam frame. The tubular beam is divided into three sections, the front end of the first section is connected to the head pipe above the front wheel, the rear end is sleeved with the second section, and the second section is sleeved with the third section. Dimension lines are marked on the first and second tubular beams for length marking when the tubular beams are telescopic. The front ends of the second and third tubular beams are provided with clamps for locking. After the clamps are released, the first tubular beam is retracted into the second tubular beam, and the second tubular beam is retracted into the third tubular beam, thereby reducing the length between the two wheels of the bicycle, which is particularly suitable for telescopic and folding of small-wheeled bicycles.

[0006] There are two types of frames for combined telescopic folding bicycles, one is a shock-absorbing frame and the other is a non-shock-absorbing frame. The non-shock-absorbing frame is simply a frame that removes the shock absorber on the shock-absorbing frame and the shock-absorbing shaft device arranged at the front end of the rear wheel bracket, and connects the front part of the rear wheel bracket under the third tubular beam.

[0007] The middle axis device of the combined telescopic folding bicycle is arranged above the rear wheel bracket. A large toothed disc is installed at one end of the middle axis, which is connected to the flywheel on the rear wheel axle through a chain, and a flywheel and a transmission are installed at the other end. A shock absorber rotating shaft device is arranged at the front end of the rear wheel bracket, which is connected to the lower front part of the third tubular beam. One end of the shock absorber is connected to a connecting frame arranged below the rear part of the third tubular beam, and the other end is connected to a connecting frame arranged above the rear wheel bracket. The flywheel on the middle axis device is connected to the large toothed disc on the pedal device installed on the connecting frame on the head tube through a chain, the transmission and a small guide sprocket arranged on the head tube. The two risers on the double riser bracket of the backrest type folding seat are connected to the connecting frames on both sides of the third tubular beam frame. The connecting frame arranged at the lower end of the riser below the folding handlebar is connected to the connecting frame arranged at the upper end of the handlebar above the front wheel. In this way, the backrest type telescopic folding bicycle is assembled.

[0008] Remove the pedal device from the connecting frame on the head tube and install it on the second pedal device connecting frame set below the front part of the rear wheel bracket. Due to the long chain, the large toothed disc on the pedal device needs the chain to pass through the guide sprocket set on the head tube above the front wheel and the guide sprocket set on the rear wheel bracket, and then connect with the flywheel and transmission on the middle shaft device above the rear wheel bracket. Remove the backrest folding seat from the double riser bracket and install a sitting seat without a backrest, so that the combination is converted into a sitting bicycle, so that the same bicycle can be ridden in two ways.

[0009] The folding handlebar is a handlebar stem of a bicycle, which is divided into two sections, upper and lower stems. A connection box with a gland is provided at the upper end of the upper stem. The bicycle handlebar is divided into two sections, and a connection shaft hole is provided at one end of each section, which is used to connect with the shaft holes on both sides of the connection box. The gland of the connection box is connected to the rear vertical plate on the connection box through a hinge. The gland is provided with an open connection hole, which is used to connect and lock with the quick-release screw rod handle provided on the front vertical plate of the connection box. When folding, the gland of the connection box is opened, and the two handlebars are turned downward to the two sides of the handlebar stem through the rotation of the connecting shaft rods on both sides of the connection box. The upper section of the handlebar stem is sleeved with the lower section of the handlebar stem, and the locking clip at the upper end of the lower section of the stem is loosened, and the upper section of the stem is retracted into the lower section of the stem, and the handlebar and the handlebar stem are folded above the wheel through the connection frame at the lower end of the lower section of the stem and the shaft connected to the connection frame at the upper end of the stem is rotated, so that the handlebar is folded.

[0010] The backrest type folding seat is provided with a double vertical tube bracket under the seat. The two vertical tubes of the double vertical tube bracket are connected to the connecting frames arranged on both sides of the third tube beam. The pillow vertical tube is sleeved with the backrest vertical tube, and the backrest vertical tube is sleeved with the vertical tube arranged at the rear of the seat. The upper ends of the backrest vertical tube and the vertical tube at the rear of the seat are provided with a clamp for locking. A bracket with an axis hole is provided at the rear of the seat frame, and is connected to the connecting frame with an axis hole under the vertical tube at the rear of the seat. An axis hole is provided in the middle of the front cross plate of the seat frame, and a bracket with a screw hole is provided in the middle of the rear cross plate. A long screw shaft rod with a handle at one end passes through the axis hole and the screw hole, and the front end is pressed against the baffle under the connecting frame under the vertical tube at the rear of the seat. Since the connecting frame under the vertical tube at the rear of the seat is connected to the bracket with an axis hole at the rear of the seat by an axis rod, turning the handle of the long screw shaft rod will cause the vertical tube at the rear of the seat to change the angle with the seat. Since the backrest riser is connected with the backrest riser of the seat, the angle of the backrest will also change, so the angle of the seat backrest can be adjusted at any time while riding. Loosen the locking clip, the pillow riser is retracted into the backrest riser, and the backrest riser is retracted into the rear riser of the seat. Through the connecting frame below the rear riser of the seat, the shaft connected to the rear riser of the seat rotates, and the pillow and backrest are folded onto the seat, so that the backrest seat is folded. By folding the handlebars and shrinking the three-section tubular beam on the frame together, the telescopic folding of the bicycle is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Installation diagram of telescopic folding bicycle with backrest

[0012] Figure 2 It is an installation diagram of a sit-on telescopic folding bicycle.

[0013] Figure 3 This is an exploded view of the shock-absorbing telescopic tubular beam frame.

[0014] Figure 4 It is an exploded view of a telescopic tubular beam frame without shock absorption.

[0015] Figure 5 Exploded view of a back-reclining folding seat

[0016] Figure 6 This is the exploded view of the folding handlebar.

[0017] Figure 7 This is a diagram of a recumbent telescopic folding bicycle after folding.

[0018] Figure 8 This is a diagram of the complete folding of the sit-on telescopic folding bicycle. DETAILED DESCRIPTION

[0019] like Figure 1As shown, two handlebars 1 are installed in the connection box 2 provided at the upper end of the handlebar stem 3. The handlebar stem 3 is sleeved with the stem 5 through a clip 4. The connecting frame 6 at the lower end of the stem 5 is connected to the connecting frame 7 provided at the upper end of the stem 91. The pedal device 11 is connected to the connecting frame 9 in front of the head tube 8 through a clip 10. The first section tubular beam 14 is sleeved with the second section tubular beam 15 through a clip 46. The second section tubular beam 15 is sleeved with the third section tubular beam 16 through a clip 44. The seat tube 41 under the seat 39 is sleeved with the connecting frame 29 above the double stem bracket 28 through a clip 40. The two stems on the double stem bracket 28 are connected to the connecting frames 45 provided on both sides of the third section tubular beam 16 through a clip 43. The stem 35 of the headrest 36 is sleeved with the stem 33 on the backrest 37 through a clip 34. The backrest stem 33 is sleeved with the stem 31 through a clip 32. The connecting frame 30 with an axial hole at the lower end of the vertical tube 31 is connected to the bracket 38 with an axial hole at the rear of the seat 39. The front end of the long screw shaft 42 with a handle under the seat 39 is pressed against the baffle 92 under the connecting frame 30 to adjust the angle of the backrest 37. One end of the shock absorber 27 is connected to the connecting frame 20 set on the rear wheel bracket 23, and the other end is connected to the connecting frame 19 set under the third section of the tubular beam 16. The shock absorber rotating shaft device 17 set at the front end of the rear wheel bracket 23 is connected to the bracket 18 under the third section of the tubular beam 16. One end of the middle shaft device 25 set above the rear wheel bracket 23 is installed with a large toothed disc 26, which is connected to the flywheel 22 on the rear wheel shaft through a chain 56. The other end is installed with a flywheel 24 and a transmission 21 connected to the connecting frame 50, and is connected to the large toothed disc 12 on the pedal device 11 through a chain 55 through a small guide sprocket 13 on the head pipe 8. In this way, a retractable folding bicycle with a backrest is assembled.

[0020] like Figure 2 As shown, the pedal device 11 of the recumbent telescopic folding bicycle is removed from the connecting frame 9 in front of the head tube 8 and installed on the connecting frame 47 provided at the lower front part of the rear wheel bracket 23. The large toothed disc 12 on the pedal device 11 is connected to the transmission 21 and the flywheel 24 through the chain 55 and two guide sprockets 13. The recumbent folding seat 39 is removed from the connecting frame 29 on the double riser bracket 28, and then replaced with a sitting seat 48, which is connected to the connecting frame 29 on the double riser bracket 28 through the seat tube 49 below, so as to form a sitting bicycle.

[0021] like Figure 3 As shown, the shock-absorbing telescopic tubular beam frame is a first tubular beam 14 sleeved with a second tubular beam 15 through a clip 46. The second tubular beam 15 sleeved with a third tubular beam 16 with connecting frames 45 on both sides through a clip 44. The first tubular beam 14 and the second tubular beam 15 are marked with dimension lines 59 for marking the length of the tubular beam when it is telescopic. The connecting frame 9 on the head tube 8 above the front wheel is connected to the bracket 57 on the footrest device 11 through a clip 10.

[0022] A large toothed disc 26 is installed at one end of the middle shaft device 25, and is connected to the flywheel 22 on the rear wheel shaft through a chain 56. A connector 52 with a thread 53 is inserted into the flywheel 24 with a thread 54, and is installed on the shaft at the other end of the middle shaft device 25 through the inner hole 51 of the connector 52, and is locked with a nut 62.

[0023] The two ends of the shock absorber 27 are connected to the connecting frame 19 and the connecting frame 20. The front end of the rear wheel bracket 23 is provided with a shock absorber shaft device 17, which is connected to the connecting frame 18 below the third tubular beam 16. The connecting frame 64 on the transmission 21 is connected to the connecting frame 50 through a clip 63. The two guide sprockets 13 are respectively connected to the connecting frame 60 with internal threads and the connecting frame 58 through a shaft screw 61. The bracket 96 connects the rear wheel bracket 23 and the middle shaft device 25, and the front part of the rear wheel bracket 23 is connected to the second connecting frame 47 of the pedal device 11.

[0024] like Figure 4 As shown: the non-shock-absorbing telescopic tubular beam frame is a frame with shock absorption, in which the shock absorber 27 and the connecting frame 19 and the connecting frame 20 are removed, the rotating shaft device 17 and the connecting frame 18 at the front end of the rear wheel bracket 23 are removed, and the front part of the rear wheel bracket 23 is connected to the bottom of the third tubular beam 16 by connecting plates 94 and 95.

[0025] like Figure 5 As shown, the backrest type folding saddle 39 is a bolster vertical tube 35 connected to the bolster 36 through a connecting frame 66, and the bolster vertical tube 35 is sleeved with the backrest vertical tube 33 through a clip 34. The shaft screw 65 is used to connect the connecting frame 68 behind the backrest 37 with the connecting frame 67. The backrest vertical tube 33 is sleeved with the vertical tube 31 through a clip 32. The shaft screw 71 is used to connect the connecting frame 30 with the shaft hole 70 and the bracket 38 with the shaft hole 72. The front end of the long shaft screw 42 with a handle passes through the shaft hole 76 and the screw hole in the bracket 73 on the connecting plate 74, and is supported on the baffle 92 below the connecting frame 30. The connecting plate 75 with a connecting hole on the seat bottom frame is connected to the cushion 77, and the seat tube 41 below the saddle frame is connected to the connecting frame 29 above the double vertical tube bracket 28 through a clip 40. The seat tube 49 below the riding type seat 48 is also connected to the connecting frame 29 on the double vertical tube bracket 28.

[0026] like Figure 6As shown, the foldable handlebar is a handlebar 1 divided into two sections, and one end of each section is provided with an axial hole, which is connected to the axial holes on both sides of the front vertical plate 80 and the rear vertical plate 81 through an axial rod screw 86. The pressure cover 82 is connected to the rear vertical plate 81 through a hinge 84. The pressure cover 82 is provided with an open connection hole 83, which is used to connect with the quick-release screw rod handle 78 on the shaft frame 79 provided on the front vertical plate 80. The bottom plate 85 of the connection box 2 is connected to the upper end of the upper section vertical pipe 3. The lower part of the upper section vertical pipe 3 is sleeved with the lower section vertical pipe 5 through a clip 4. A connecting frame 6 with a square hole is provided below the lower section vertical pipe 5. The shaft head 90 with a square hole is installed in the connecting frame 7 provided at the upper end of the handle 91, and is installed in the connecting hole 89 with a quick-release screw rod 88 for locking, and is connected to the connecting frame 6 with a square hole provided below the lower section vertical pipe 5 through a square pin screw rod 87.

[0027] like Figure 7 As shown, the backrest telescopic folding bicycle is folded by loosening the locking clips 44 and 46, so that the first section tubular beam 14 is retracted into the second section tubular beam 15, and the second section tubular beam 15 is retracted into the third section tubular beam 16, and extends from the rear end thereof to below the top of the rear rack 93. The locking clip 43 is loosened, and the two risers on the double riser bracket 28 are lowered from the connecting frame 45 on both sides of the third section tubular beam 16. The locking clips 34 and 32 are loosened, and the pillow riser 35 is retracted into the backrest riser 33, and the backrest riser 33 is retracted into the riser 31. The connecting frame 30 and the bracket 38 are connected by the rotation of the shaft screw 71, and the riser 31 on the connecting frame 30 is folded onto the seat 39 together with the backrest 37 and the pillow 36 above. The locking clip 4 is loosened, and the upper riser 3 is retracted into the lower riser 5. The two handlebar sections 1 and the front and rear uprights 80 and 81 are folded to the two sides of the seat tube 5 by rotating the connected shaft screws 86. The quick release screws 88 are loosened, and the folding handlebars are folded above the pedal device 11 by rotating the connecting shafts in the connecting frame 6 and the connecting frame 7.

[0028] like Figure 8 As shown; the sit-type telescopic folding bicycle is folded by replacing the recumbent seat 39 of the recumbent telescopic folding bicycle with a sit-type seat 48, removing the pedal device 11 from the connecting frame 9, connecting it to the second connecting frame 47 of the pedal device 11, and the large toothed disc 12 is connected to the transmission 21 and the flywheel 24 through the chain 55 and the two guide sprockets 13.

Claims

1. A combined telescopic folding bicycle, comprising a front wheel, a rear wheel, a frame, a seat, a handlebar, a flywheel, a pedal device and a rear rack, wherein: The bicycle frame is changed into a telescopic tubular beam frame, wherein a first tubular beam (14) is sleeved with a second tubular beam (15), the second tubular beam (15) is sleeved with a third tubular beam (16) provided with connecting frames (45) on both sides, two vertical tubes on a double vertical tube bracket (28) below a seat (39) of a backrest type telescopic folding bicycle are connected to connecting frames (45) on both sides of the third tubular beam (16), an upper vertical tube (3) below a connecting box (2) of a folding handlebar (1) is sleeved with a lower vertical tube (5), and a connecting frame (6) below the lower vertical tube (5) is connected to the connecting frame (6) ) is connected to a connecting frame (7) arranged at the upper end of the handlebar (91), the front part of the rear wheel bracket (23) is connected to the lower part of the third tubular beam (16), a large toothed disc (26) is installed at one end of a middle shaft device (25) arranged above the rear wheel bracket (23), and is connected to a flywheel (22) on the rear wheel shaft through a chain (56), and a flywheel (24) and a transmission (21) are installed at the other end, and are connected to a large toothed disc (12) on a pedal device (11) on the connecting frame (9) through a chain (55) passing through a guide sprocket (13) on a head tube (8), thereby forming a retractable folding bicycle with a backrest. The backrest type seat (39) is removed from the double riser bracket (28) and replaced with a sitting type seat (48); the pedal device (11) is removed from the connecting frame (9) and installed on the connecting frame (47) at the front lower part of the rear wheel bracket (23); the large toothed disc (12) on the pedal device (11) is connected to the transmission (21) through a chain (55) through two guide sprockets (13) and a flywheel (24) on the middle shaft device (25), thereby forming a sitting type telescopic folding bicycle.

2. A combined telescopic folding bicycle according to claim 1, characterized in that: The telescopic tubular beam frame comprises a first tubular beam (14) sleeved with a second tubular beam (15) through a clamp (46), the second tubular beam (15) sleeved with a third tubular beam (16) with connecting frames (45) arranged on both sides through a clamp (44), the first tubular beam (14) and the second tubular beam (15) are marked with dimension lines (59), a connecting frame (9) on a head pipe (8) above a front wheel is connected to a pedal device (11), a large toothed disc (26) installed at one end of a middle shaft device (25) is connected to a flywheel (22) on a rear wheel shaft through a chain (56), and a flywheel (24) on the middle shaft device (25) is connected to a rear wheel shaft through a chain (56). After the connector (52) is installed inside, it is installed on the other end of the middle shaft device (25), the two ends of the shock absorber (27) are connected to the connecting frame (19) and the connecting frame (20), the front end of the rear wheel bracket (23) is provided with a rotating shaft device (17) of the shock absorber (27) and connected to the bracket (18) below the third section tubular beam (16), the connecting frame (64) on the transmission (21) is connected to the connecting frame (50), the first guide sprocket (13) is connected to the connecting frame (60), the second guide sprocket (13) is connected to the connecting frame (58), and the lower front part of the rear wheel bracket (23) is connected to the second connecting frame (47) of the pedal device (11), The non-shock-absorbing telescopic tubular beam frame is obtained by removing the shock absorber (27) and the connecting frame (20) and the connecting frame (19) on the shock-absorbing frame, removing the rotating shaft device (17) and the connecting frame (18), and connecting the front part of the rear wheel bracket (23) to the bottom of the third tubular beam (16) through the connecting plates (94) and the connecting plates (95).

3. The combined telescopic folding bicycle according to claim 1, characterized in that: The backrest type folding bicycle seat comprises a vertical tube (35) of a backrest (36) and a vertical tube (33) of a backrest (37) which are sleeved together, and a vertical tube (33) of the backrest (37) and a vertical tube (31) which are sleeved together. A connecting frame (30) with an axial hole (70) at the lower end of the vertical tube (31) is connected to a bracket (38) with an axial hole (72) through an axial rod screw (71). The front end of a long screw shaft (42) with a handle passes through the axial hole (76) and the screw hole in the bracket (73) and is supported on a baffle (92) below the connecting frame (30). A seat tube (41) below a bicycle seat (39) is connected to a connecting frame (29) on a double vertical tube bracket (28).

4. The combined telescopic folding bicycle according to claim 1, characterized in that: The foldable handlebar (1) is divided into two sections, one end of each section is provided with an axial hole, which is connected to the axial holes on both sides of a front vertical plate (80) and a rear vertical plate (81) through an axial rod screw (86); a hinge (84) connects a pressure cover (82) and the rear vertical plate (81); an open connection hole (83) on the pressure cover (82) is connected to a quick-release screw rod handle (78) arranged on the front vertical plate; a bottom plate (85) of a connection box (2) is connected to the top of an upper vertical tube (3); the upper vertical tube (3) is sleeved with a lower vertical tube (5) through a clip (4); an axial head (90) with a square hole is installed in a connecting frame (7) arranged at the upper end of a handlebar (91); a square pin screw rod (87) connects the connecting frame (7) equipped with the axial head with a square hole (90) and the connecting frame (6) with a square hole.

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