Rowing free double-drive device

Abstract

The invention discloses a free double-drive device for rowing. The free double-drive device is mainly composed of a pedal drive mechanism, a handlebar swing arm drive mechanism, a roller flywheel fluted disc set, a rear wheel flying drive system, a handlebar front fork steering mechanism and the like. The frame is mainly composed of two stainless steel rectangular pipes, the two stainless steel rectangular pipes are partially bent to be used for assembling the pedal driving mechanism, and the five-way pipe is fixedly connected with the frame. The main driving fluted disc is formed by splicing a left fluted disc and a right fluted disc, the upper portion of the main driving fluted disc is fixedly welded to the swing arm, the lower portion of the main driving fluted disc is movably connected with the pedal driving rod through the linkage driving rod, and the swing arm and the pedal driving rod form a linkage mechanism. The handlebar is fixedly connected with the swing arm, and steering adopts a general bicycle structure; the swing arm driving mechanism is assembled in the frame through a swing arm seat sleeve, the roller flywheel fluted disc set is composed of a roller, a flywheel and a driving fluted disc, the roller is fixedly connected with a pedal flywheel inner core, rowing driving and pedal driving are freely isolated, the two driving modes are freely and seamlessly switched at any time, in addition, pedal driving and ship changing driving can be carried out at the same time, and the driving efficiency is improved. Therefore, the three driving modes are freely and seamlessly switched at any time and do not interfere with one another.

Description

Technical Field

[0001] This patent belongs to the field of bicycle technology and is mainly used in two-wheeled recumbent bicycles, and can also be expanded to three-wheeled bicycles. Background Art

[0002] Traditional bicycles are pedal-driven and only exercise the legs and lower body, not the whole body. Rowing fitness bicycles that can exercise the whole body are needed. Summary of the invention

[0003] This patent provides a free dual-drive bicycle that combines pedal drive and rowing drive to exercise the whole body. The structure and driving principle of this patent are explained by taking a two-wheeled lying bicycle as an example.

[0004] This patent uses a two-wheeled lying bicycle as an example to explain the structure and transmission principle of the rowing free dual-drive device; Figure 1 This is the structure and transmission system of this patent. Figure 2 and Figure 3 This is an enlarged view of the local structure. Figure 4 and Figure 5 It is the transmission path and principle of pedal drive and rowing drive.

[0005] As shown in the figure: 1. Front wheel 2, front fork 2-1, steering rod 3, pedal sprocket 4, pedal drive rod The two-wheeled recumbent bicycle mainly comprises a front wheel 1, a rear wheel 18, a front fork 2, a frame 7, a seat 14, a pedal drive mechanism 3, a handlebar swing arm drive mechanism 8, a roller flywheel sprocket set 13, a rear wheel flydrive chain 17 and a handlebar front fork steering mechanism; the structural assembly of the frame and main mechanism components is described below.

[0006] The frame 7 is mainly composed of two stainless steel rectangular tubes (10*40*1.5), the distance between the rectangular tubes is about 68 mm, and the partial bending is used to assemble the pedal drive mechanism. The outer diameter of the five-way tube is 40*68 mm, and the five-way tube is fixedly connected to the frame 7; the pedal drive rod 4 is coaxially movably sleeved in the pedal five-way through a sleeve with an inner diameter of 40 mm; the main drive sprocket 6 is spliced ​​by two left and right 48-tooth sprockets, with a distance of about 16 mm, and is cut and processed as follows Figure 1 The upper part is fixedly welded with the swing arm 8, and the lower part is movably connected with the pedal drive rod 4 through the linkage drive rod 5 (the movable part adopts a joint bearing), and the swing arm 8 and the pedal drive rod 4 form a linkage mechanism; the handlebar 9 is fixedly connected with the swing arm 8, and the steering adopts a common structure of bicycles. The vertical tube is assembled in the head tube (the vertical tube is 28 mm in diameter, and the head tube is 38 mm in diameter), and the steering bearing is assembled; the swing arm drive mechanism 8 is assembled in the frame 7 through the swing arm seat sleeve 8-3, as shown in FIG. Figure 1 and Figure 3 As shown, the seat sleeve trunnion 8-4 is equipped with a bearing with a deep groove ball bearing seat (bearing with an inner diameter of 20 mm), and the deep groove bearing seat is fixedly connected to the frame ear plate by bolts. Figure 3 As shown, the swing arm head tube 8-2 in the swing arm 8 is fixedly sleeved in the swing arm seat cover 8-3, a 20 mm diameter steel column is welded to the lower part of the swing arm vertical tube 8-1 (28.6), the steel column passes through the lower baffle of the swing arm seat cover 8-3 and is fixedly connected to the steering connecting plate 8-5, the steering connecting plate 8-5 is movably connected to the front fork 2 through the steering rod 2-1, and the handlebar 9 is turned to drive the front fork 2 to rotate synchronously through the steering rod 2-1; The local structure of the roller flywheel toothed disc group 13 is as follows: Figure 2 As shown, roller (D25*65) 13-1, the structure is as follows Figure 4 As shown, the roller is assembled with the left flywheel 10-1 through the left flywheel sleeve 10-2, and the flywheel sleeve 10-2 is fixedly connected with the roller 13-1 through screws; the right flywheel 12-1 is assembled with the right inner and outer thread flywheel sleeve 12-2 (structure as shown Figure 5 The flywheel 13-1 is mounted on the right inner and outer thread flywheel sleeve 12-2, and the flywheel 16 (number of teeth 32) is fixedly mounted on the flywheel 13-1. The pedal flywheel 7-2 is mounted in the right inner and outer thread flywheel sleeve 12-2 through the flywheel connector 7-3. The right inner and outer thread flywheel sleeve 12-2 is welded and fixed to the roller 13-1. The following describes the driving transmission relationship of the roller flywheel sprocket set 13. First, the principle of unidirectional flywheel rotation is described. The rear flywheel of the bicycle is connected to the hub. Under normal pedaling drive, the chain drives the flywheel to rotate forward. If it encounters a downhill slope, no pedaling drive is required. The bicycle rotates by itself relying on inertial gravity. At this time, the chain does not rotate, and the flywheel idling and sliding. At this time, the flywheel rotates unidirectionally. Understanding this principle is the key to understanding the driving transmission relationship of the roller flywheel sprocket set 13. As mentioned above, the right inner and outer flywheel sleeve 12-2 is equipped with two flywheels (12-1, 7-2) and a flywheel sprocket 16 (number of teeth 32). At this time, if only the pedal drive is used, the pedal flywheel 7-2 is driven in the forward direction, driving the flywheel sprocket 16 to rotate forward, thereby driving the rear wheel of the bicycle to rotate forward. At this time, the roller 13-1 rotates forward, and the roller 13-1 is fixedly connected with the left flywheel 10-1 and the inner core of the right flywheel 12-1. The outer gear rings of the two flywheels do not rotate and are in idling gliding. At this point, the pedal drive and the rowing drive are freely separated and do not interfere with each other; on the contrary, if only the rowing drive is used, The left flywheel 10-1 and the right flywheel 12-1 drive the roller 13-1 to rotate forward in turn, and the roller (D25*65) 13-1 forms a fixed connection with the inner core of the pedal flywheel 7-2, idling and sliding, and the outer gear ring does not rotate, thereby completing the free isolation of the rowing drive and the pedal drive, and the two do not interfere with each other.

[0007] The following is based on Figure 4 and Figure 5 Combined with Figure 1 , Figure 2 Explain the transmission principle and relationship between rowing drive and pedal drive: like Figure 1 , Figure 2 and Figure 4 As shown, the swing arm 8 swings backward as shown by the arrow, the left sprocket of the main drive sprocket 6 drives the left drive chain 10 to drive the left flywheel 10-1 to rotate in the direction of the arrow, at this time the left return spring 11 is stretched, the left flywheel 10-1 drives the roller 13-1 to rotate forward, thereby driving the flywheel sprocket 16 to rotate forward, during this process, the right drive chain 12 moves in the direction as shown in FIG. Figure 4 As shown by the middle arrow, the right return spring 12-3 drives the right flywheel 12-1 to slide in the opposite direction, and the spring drives the chain to reset. The right flywheel 12-1 slides in the opposite direction without driving. As the swing arm 8 is pulled backward to the limit position, the left return spring 11 is stretched to the maximum elastic position, and the right return spring 12-3 returns to the free position. At this time, the swing arm 8 is converted from the backward pulling state to the forward pushing state. Figure 5 As shown in the figure, as shown by the arrow, the swing arm swings forward in the direction of the arrow, the right drive chain 12 moves in the direction of the arrow, the right return spring 12-3 drives the right flywheel 12-1 to drive the roller 13-1 to rotate forward, thereby driving the flywheel sprocket 16 to rotate forward. In this process, the left drive chain 10 moves in the direction of the arrow in the figure, and the left return spring 11 drives the left flywheel 10-1 to slide in the opposite direction. The left flywheel 10-1 has no driving effect. As the swing arm 8 is pushed to the limit position, the right return spring 12-3 is stretched to the maximum elastic force position, and the left return spring 11 returns to the free position. At this time, the swing arm 8 is converted from the forward push state to the backward pull state, thereby starting the next rowing swing cycle, and the cycle repeats. As mentioned above, the front and rear push-pull rowing drive is freely isolated from the pedal drive and does not interfere with each other.

[0008] If you stop rowing and only use pedaling, such as Figure 1 , Figure 2 and Figure 4 As shown, by stepping on the pedal crank, the pedal chain 7-1, as shown by the arrow in the figure, drives the pedal flywheel 7-2 to rotate forward, thereby driving the flywheel 16 to rotate forward. At this time, the left flywheel 10-1 and the right flywheel 12-1 are in an idling state, realizing the free isolation of the pedal drive and the rowing drive, and the two drive modes can be freely and seamlessly switched at any time without interfering with each other. In addition, the pedal drive and the boat-changing drive can be carried out at the same time without interfering with each other. At this point, the three drive modes can be freely and seamlessly switched at any time without interfering with each other.

[0009] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0010] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0011] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A rowing free dual-drive device is composed of a pedal drive mechanism, a handlebar swing arm drive mechanism, a roller flywheel sprocket set, a rear wheel fly drive system and a handlebar front fork steering mechanism; the frame 7 is mainly composed of two stainless steel rectangular tubes, the rectangular tubes are about 68 mm apart, and are partially bent for assembling the pedal drive mechanism. The five-way tube is fixedly connected to the frame 7; the main drive sprocket 6 is spliced ​​by two left and right 48-tooth sprockets, with a spacing of about 16 mm, cut and processed into a crescent shape as shown in the figure, the upper part is fixedly welded with the swing arm 8, and the lower part is movably connected to the pedal drive rod 4 through the linkage drive rod 5; the swing arm and the pedal drive rod form a linkage mechanism.

2. The swing arm driving mechanism 8 is assembled in the frame 7 through the swing arm seat 8-3, as shown in Figures 1 and 3. The seat ear shaft 8-4 is equipped with a bearing with a deep groove ball bearing seat (bearing with an inner diameter of 20 mm), and the deep groove bearing seat is fixedly connected to the frame ear plate through bolts. As shown in Figure 3, the swing arm head tube 8-2 in the swing arm 8 is fixedly sleeved in the swing arm seat 8-3, and a 20 mm diameter steel column is welded to the lower part of the swing arm vertical tube 8-1 (28.6). The steel column passes through the lower baffle of the swing arm seat 8-3 and is fixedly connected to the steering connecting plate 8-5. The steering connecting plate 8-5 is movably connected to the front fork 2 through the steering rod 2-1. Turning the handlebar 9 drives the front fork 2 to rotate synchronously through the steering rod 2-1.

3. The partial structure of the roller flywheel sprocket set 13 is shown in Figure 2, the roller (D25*65) 13-1, the structure is shown in Figure 4, the roller is assembled with the left flywheel 10-1 through the left flywheel sleeve 10-2, and the flywheel sleeve 10-2 is fixedly connected to the roller 13-1 by screws; the right flywheel 12-1 is assembled on the roller 13-1 through the right inner and outer thread flywheel sleeve 12-2 (the structure is shown in Figure 5), the right inner and outer thread flywheel sleeve 12-2 is fixedly assembled with the flywheel sprocket 16 (number of teeth 32), the pedal flywheel 7-2 is assembled in the right inner and outer thread flywheel sleeve 12-2 through the flywheel connector 7-3, and the right inner and outer thread flywheel sleeve 12-2 is welded and fixed to the roller 13-1.

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