Bilateral driving reciprocating motion type hub

Abstract

The utility model discloses a bilateral driving reciprocating motion type hub which comprises a hub middle shaft rod, a hub wheel cylinder and a driving disc, the hub wheel cylinder is rotatably sleeved on the hub middle shaft rod, and four driven gears and two main transmission gears are installed on the hub middle shaft rod inside the hub wheel cylinder. The two main transmission gears are located on the two sides of the four driven gears, the front ends of the two main transmission gears are meshed with the four driven gears, meanwhile, the outer sides of the two main transmission gears are each provided with a driving disc, and the driving discs are located at the two ends of the hub wheel cylinder and rotatably installed on the hub middle shaft rod. And one end of the inner side of the driving disc is connected with the main transmission gear and is connected with the hub wheel cylinder through a ratchet wheel structure. According to the utility model, a circular motion type idle work part can be directly omitted, and the maximum power output angle is generated during the motion power generation for each step, so that the riding efficiency is improved to the maximum extent.

Description

Technical Field

[0001] The utility model relates to a double-sided driven reciprocating hub, belonging to the field of bicycles, electric bicycles and sports equipment. Background Art

[0002] The driving method of traditional bicycles is mostly that the crank is connected to the chain plate to drive the chain to drive the hub and then output power to the wheel. The driving process of this pedaling method is a circular motion process, in which a large part of the effective power output is useless. Every time the circular motion pedaling reaches a certain angle, the power output and transmission are naturally lost. According to the test, in the process of riding, in the 360° rotation of the circular motion, the actual effective power output is only 90° effective motion. The remaining 270° rotation is redundant. And the circular motion riding, because of its redundant rotation process, adds unnecessary burden to the cyclist, such as causing direct damage to the human knee joint.

[0003] Therefore, in order to change the traditional riding method, the applicant invented a forward and reverse motion middle shaft transmission mechanism (CN207292304U), which improves the transmission efficiency, reduces the invalid motion process during the transmission process, and can maximize (reduce the cost of transmission efficiency and improve transmission efficiency); based on this, a set of hubs that match the middle shaft transmission mechanism are designed, which will be able to improve the riding efficiency to a greater extent and effectively reduce the damage to the rider's paint cover when exerting force. Utility Model Content

[0004] The purpose of the utility model is to provide a bilaterally driven reciprocating hub to solve the shortcomings of the traditional bicycle riding method. It realizes the riding movement without circular motion through unidirectional angle-driven pedaling, thereby maximizing the power output during riding.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a bilaterally driven reciprocating hub, which includes a hub center shaft, a hub wheel barrel and a driving plate, the hub wheel barrel can be rotatably mounted on the hub center shaft, four passive gears and two main drive gears are installed on the hub center shaft inside the hub wheel barrel, the two main drive gears are located on both sides of the four passive gears, and their front ends are meshed with the four passive gears, and at the same time, a driving plate is respectively arranged on the outer sides of the two main drive gears, the driving plates are located at both ends of the hub wheel barrel, and can be rotatably mounted on the hub center shaft, and the inner end of the driving plate is connected to the main drive gear and is connected to the hub wheel barrel through a ratchet structure.

[0006] Furthermore, a passive gear bracket is fixedly mounted on the middle portion of the hub center shaft rod, and the passive gear bracket is in a cross-shaped structure as a whole, with four passive gears installed around it.

[0007] Furthermore, a passive gear frame retaining spring is provided between the passive gear frame and the main transmission gear.

[0008] Furthermore, the tooth groove of the passive gear is arranged on one side end surface thereof, and the tooth groove of the passive gear faces the center shaft rod of the hub during installation.

[0009] Furthermore, one end of the main transmission gear is provided with a tooth groove, and the other end is provided with a concave-convex structure for docking with the driving disk.

[0010] Furthermore, an outer ring bearing is arranged between the hub wheel barrel and the main drive gear, and the outer ring bearing is sleeved on the outer ring of the main drive gear.

[0011] Furthermore, an embedded bearing is arranged in the inner end of the main transmission gear.

[0012] Furthermore, the ratchet structure includes a ratchet ring, a ratchet pawl and a ratchet pawl spring. The ratchet ring is fixed at both ends of the hub wheel tube. The ratchet pawl and the ratchet pawl spring are installed in a fixed groove on the inner side of the driving disk. The front end spring of the ratchet pawl spring contacts the front end of the ratchet pawl, and the front end of the ratchet pawl cooperates with the ratchet teeth inside the ratchet ring to push the ratchet ring and the hub wheel tube to rotate.

[0013] Furthermore, the driving disc is rotatably mounted on the hub center shaft via a driving disc bearing.

[0014] Furthermore, grooves for matching with the outer end of the main transmission gear are formed around the inner shaft hole of the driving plate.

[0015] The beneficial effects of the utility model are as follows:

[0016] The hub of the utility model has made a fundamental change to the structure of the existing hub, which can directly save the useless part of the circular motion, and each time of pedaling is the maximum power output angle when the movement is exerted.

[0017] The hub of the utility model does not need a chain and a disc, and is driven on both sides and balanced on the left and right sides. Such a single-pedaling method can effectively reduce the damage to the paint cover of the rider when exerting force.

[0018] The hub of the utility model changes the circular motion mode of the traditional riding method, fully improves the efficiency of the riding movement, and can change the 360° circular motion mode of the traditional riding into a 90° motion mode, thereby realizing the maximum improvement of the riding efficiency.

[0019] The hub of the utility model can also reduce the overall weight of the bicycle under the same conditions by improving riding and movement efficiency.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional structural diagram of a double-sided driven reciprocating hub of the utility model.

[0022] Figure 2 1 is a structural diagram of a hub drum of the utility model; (a) is a main view, and (b) is a side view.

[0023] Figure 3 It is a structural diagram of the ratchet ring in the utility model.

[0024] Figure 4 It is a structural diagram of the drive disk in the utility model; (a) is the main view, and (b) is the side view.

[0025] Figure 5 It is a schematic diagram of installing a passive gear bracket on the central axis rod of the central hub of the utility model.

[0026] Figure 6 It is a schematic diagram of installing a passive gear on a passive gear bracket in the utility model.

[0027] Figure 7 It is a schematic diagram of the main transmission gear on the central axis rod of the central hub of the utility model.

[0028] Figure 8 It is a schematic diagram of installing an embedded bearing and an outer ring bearing on the main transmission gear in the utility model.

[0029] Fig. 9 It is a schematic diagram of the coordinated installation of the driving discs on both sides of the hub and the ratchet pawl spring and the ratchet pawl in the utility model.

[0030] Fig.10 It is a schematic diagram of the hub drum, the main transmission gear and the driven gear after being installed in the utility model.

[0031] Fig.11 It is an overall schematic diagram of the hub after the drive discs on both sides of the utility model are installed.

[0032] Fig.12 It is a schematic diagram of the forward and reverse rotation of the utility model.

[0033] Markings in the figure are: 1-hub middle shaft rod, 2-passive gear bracket, 3-passive gear, 4-main drive gear, 5-passive gear frame retaining spring, 6-outer ring bearing, 7-embedded bearing, 8-hub wheel tube, 9-ratchet ring, 10-ratchet pawl, 11-ratchet pawl reed, 12-drive plate, 13-drive plate bearing, 14-middle shaft locking inner nut, 15-middle shaft locking outer nut. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] like Figures 1 to 11 As shown, a bilaterally driven reciprocating hub comprises a hub center shaft 1, a hub wheel barrel 8 and a driving disk 12, wherein the hub wheel barrel 8 is rotatably mounted on the hub center shaft 1, and four passive gears 3 and two main transmission gears 4 are mounted on the hub center shaft inside the hub wheel barrel 8, the two main transmission gears 4 are located on both sides of the four passive gears 3, and the front ends of the two main transmission gears 4 are meshed with the four passive gears 3, while the outer sides of the two main transmission gears 4 are respectively provided with a driving disk 12, wherein the driving disk 12 is located at both ends of the hub wheel barrel 8, and is rotatably mounted on the hub center shaft 1, and the inner end of the driving disk 12 is connected to the main transmission gear 4 and is connected to the hub wheel barrel 8 through a ratchet structure, thereby driving the main transmission gear 4 and the hub wheel barrel 8 to rotate.

[0036] In this embodiment, a passive gear bracket 2 is fixedly mounted in the middle of the hub shaft 1. The passive gear bracket 2 is a cross-shaped structure as a whole, and four passive gears 3 are installed around it. The tooth groove of the passive gear 3 is arranged on one side end face thereof, and the tooth groove of the passive gear 3 faces the hub shaft 1 when installed. A tooth groove is arranged at one end of the main transmission gear 4, and a concave-convex structure for docking with the driving disk 12 is arranged at the other end. At the same time, a passive gear bracket retaining spring 5 is arranged between the passive gear bracket 2 and the main transmission gear 4.

[0037] In this embodiment, an outer ring bearing 6 is arranged between the hub wheel barrel 8 and the main drive gear 4. The outer ring bearing 6 is mounted on the outer ring of the main drive gear 4. At the same time, an embedded bearing 7 is also arranged in the inner end of the main drive gear 4. Driven by the driving disk 12, the hub wheel barrel 8 and the main drive gear 4 can rotate around the outer ring bearing 6 and the embedded bearing 7 respectively.

[0038] In this embodiment, the ratchet structure includes a ratchet ring 9, a ratchet pawl 10 and a ratchet pawl spring 11. The ratchet ring 9 is fixed at both ends of the hub wheel tube 8. The ratchet pawl 10 and the ratchet pawl spring 11 are installed in the fixed groove on the inner side of the driving disk 8. The front end spring of the ratchet pawl spring 11 contacts the lower front end of the ratchet pawl 10. The front end of the assembled ratchet pawl 10 cooperates with the ratchet teeth inside the ratchet ring 9, which can push the ratchet ring and the hub wheel tube to rotate.

[0039] In this embodiment, grooves are provided around the inner shaft hole of the driving disk 8. After insertion, the grooves are docked with the concave-convex structure at the end of the main transmission gear 4. After docking and installation, they are locked and fixed by the central shaft locking inner nut 14 and the central shaft locking outer nut 15.

[0040] like Fig.12 The forward and reverse rotation of the hub is achieved by the engagement of the built-in passive gear and the main transmission gear, and by the engagement of the drive disc and the main transmission gear to form a gapless matching relationship. When the drive disc on one side is driven, the corresponding drive disc on the other side also rotates, and the direction must be in the opposite direction. In this way, reciprocating rotation can be achieved, and the hub drum can be driven to rotate continuously. Usually, a rope (belt) is provided in the notch of the drive disc as a transmission chain connected to the forward and reverse center shaft, so that when it is stretched and driven, the entire hub can rotate. This method also eliminates the chain disc and chain on traditional bicycles.

[0041] In summary, according to the known riding methods of bicycles, the biggest difference between the present invention and the traditional riding methods lies in the built-in forward and reverse gear design functions of its wheels (referring to integrated wheels) and hubs, and the fact that there is no need for a toothed disc as a transmission component to drive the chain to the hub as a drive when driving. The hub of the present invention is combined with a forward and reverse middle shaft (CN207292304U), which can realize the forward and reverse rotation of the hub without the need for a circular motion, thereby realizing the efficient operation of the bicycle. The forward and reverse rotation of the shaft and the forward and reverse rotation of the hub form a gapless synchronous forward rotation and synchronous reverse rotation, thereby realizing the free operation of the forward extension and reverse shortening of the rotating rope (belt). At the same time, when the hub is driven, it is a bilateral drive. After the left and right cranks are stepped on to a certain angle, the crank on the other side naturally rotates back to a certain angle, which can realize a reciprocating and gapless orderly left and right up and down motion driving method.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the above embodiments do not limit the protection scope of the utility model in any form, and all technical solutions obtained by equivalent replacement and the like fall within the protection scope of the utility model. The parts not involved in the utility model are the same as the prior art or can be implemented by the prior art, and the addition or reduction of some parts does not affect its principle structure.

Claims

1. A double-sided drive reciprocating hub, characterized in that: It includes a hub center shaft rod, a hub wheel barrel and a driving plate. The hub wheel barrel can be rotatably mounted on the hub center shaft rod. Four passive gears and two main transmission gears are installed on the hub center shaft rod inside the hub wheel barrel. The two main transmission gears are located on both sides of the four passive gears, and their front ends are meshed with the four passive gears. At the same time, a driving plate is respectively arranged on the outer sides of the two main transmission gears. The driving plates are located at both ends of the hub wheel barrel and can be rotatably mounted on the hub center shaft rod. The inner end of the driving plate is connected to the main transmission gear and is connected to the hub wheel barrel through a ratchet structure.

2. A double-sided drive reciprocating hub according to claim 1, characterized in that: A passive gear bracket is fixedly sleeved on the middle part of the hub central shaft rod. The passive gear bracket is in a cross-shaped structure as a whole, and four passive gears are rotatably mounted around it.

3. A double-sided drive reciprocating hub according to claim 2, characterized in that: A passive gear frame retaining spring is arranged between the passive gear frame and the main transmission gear.

4. A double-sided drive reciprocating hub according to claim 2, characterized in that: The tooth groove of the passive gear is arranged on one side end surface thereof, and the tooth groove of the passive gear faces the central axis rod of the hub during installation.

5. The double-sided drive reciprocating hub according to claim 1, characterized in that: One end of the main transmission gear is provided with a tooth groove, and the other end is provided with a concave-convex structure for docking with the driving disc.

6. The double-sided drive reciprocating hub according to claim 1, characterized in that: An outer ring bearing is arranged between the hub wheel barrel and the main transmission gear, and the outer ring bearing is sleeved on the outer ring of the main transmission gear.

7. The double-sided drive reciprocating hub according to claim 1, characterized in that: An embedded bearing is arranged in the inner end of the main transmission gear.

8. The double-sided drive reciprocating hub according to claim 1, characterized in that: The ratchet structure includes a ratchet ring, a ratchet pawl and a ratchet pawl spring. The ratchet ring is fixed at both ends of the hub wheel tube. The ratchet pawl and the ratchet pawl spring are installed in a fixed groove on the inner side of the driving disk. The front end spring of the ratchet pawl spring contacts the front end of the ratchet pawl, and the front end of the ratchet pawl cooperates with the ratchet teeth inside the ratchet ring to push the ratchet ring and the hub wheel tube to rotate.

9. The double-sided drive reciprocating hub according to claim 1, characterized in that: The driving disc is rotatably mounted on the hub center shaft rod via a driving disc bearing.

10. The double-sided drive reciprocating hub according to claim 1, characterized in that: The inner side shaft hole of the driving disc is surrounded by grooves for matching with the outer side end of the main transmission gear.

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