Spinning driven by planetary gear

Abstract

The utility model provides a spinning driven by a planetary gear, relates to the technical field of fitness equipment, and solves the problems that the resistance of the existing spinning is difficult to adjust and the requirements of other consumers cannot be met due to the fact that a flywheel is driven to move by adopting belt pulley transmission. The electric bicycle comprises a transmission assembly arranged in a bicycle frame, the transmission assembly comprises a flywheel, an inner magnetic control set is arranged in a first cavity, an outer gear set is rotationally arranged in a second cavity and comprises an outer gear and a middle shaft, a planetary gear set is arranged in the outer gear, and a planetary gear set is arranged in the middle shaft. The planetary gear set comprises a first planet carrier, a second planet carrier, a sun gear and three planet gears. The utility model has the beneficial effects that the planetary gear drives the flywheel to rotate and is matched with the inner magnetic control group on the other side of the flywheel, so that the resistance can be better regulated and controlled, the resistance is more stable, and the experience of various consumers is met.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a spinning bike with planetary gear transmission. Background Art

[0002] With the increasing number of current fitness products, people's demand for fitness is also getting higher and higher. For example, for spinning bikes, although there are various types of spinning bikes on the market currently, the basic movement principles are roughly the same, that is, belt drive. The flywheel is driven by a belt pulley, and the resistance of the bike is not easy to adjust, and the structural principle is very single, which is not conducive to product upgrading and not conducive to meeting the experiences of various consumers. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problems that the existing spinning bike uses a belt pulley to drive the flywheel to move, the resistance of the bike is not easy to adjust, and it cannot meet the needs of other consumers.

[0004] To achieve the above purpose, the following technical solutions are adopted in the utility model:

[0005] A spinning bike with planetary gear transmission includes a frame and a transmission component arranged inside the frame. It is characterized in that: the transmission component includes a flywheel, the flywheel includes a first chamber and a second chamber, an internal magnetic control group for regulating resistance is arranged in the first chamber, and an external gear group is rotatably arranged in the second chamber;

[0006] The external gear group includes an external gear and a central shaft. A flat plate is fixedly connected to one end of the external gear away from the flywheel, the central shaft is axially fixedly connected to the middle of the flat plate, the central shaft is axially rotatably arranged in the middle of the internal magnetic control group and the flywheel, and a planetary gear group is arranged inside the external gear;

[0007] The planetary gear group includes a first planet carrier, a second planet carrier, a sun gear and three planet gears. The first planet carrier and the second planet carrier are fixedly connected to the frame, the sun gear and the three planet gears are rotatably connected between the first planet carrier and the second planet carrier, the sun gear is rotatably sleeved on the central shaft, the three planet gears are meshed with the internal teeth of the external gear, the three planet gears are annularly distributed around the sun gear and meshed with the sun gear, and the sun gear is fixedly connected to the flywheel coaxially;

[0008] A second flange group is arranged on the side of the flat plate away from the flywheel, a first flange group is arranged on the side of the internal magnetic control group away from the flywheel, both ends of the central shaft respectively rotatably pass through the first flange group and the second flange group and are connected to one end of a crank, and the other end of the crank is connected to a foot pedal.

[0009] Further improvement is as follows: A number of second semi-circular pin holes are provided on the outer peripheral wall of the convex portion of the sun gear, and corresponding first semi-circular pin holes are provided on the inner peripheral wall of the flywheel. The flywheel is fixedly connected to the sun gear through the cooperation of a number of pins with the second semi-circular pin holes and the first semi-circular pin holes.

[0010] Further improvement is as follows: Three first spacer sleeves are provided between the three planet gears and the first planet carrier, and three second spacer sleeves are respectively provided between the three planet gears and the second planet carrier. The three first spacer sleeves and the three second spacer sleeves are rotatably sleeved on the rotating shafts of the corresponding planet gears.

[0011] Further improvement is as follows: The internal magnetic control group includes a magnet seat, a first side plate and a second side plate respectively installed on both sides of the magnet seat. A bearing fixing seat is provided on the side of the first side plate away from the magnet seat, and a bearing is provided inside the bearing fixing seat. The middle shaft sequentially passes through the second side plate, the magnet seat, the first side plate, the bearing and the first flange group. A fourth spacer sleeve is provided between the first flange group and the bearing. The first side plate, the second side plate, the fourth spacer sleeve and the bearing are rotatably sleeved on the middle shaft.

[0012] Further improvement is as follows: A third spacer sleeve is provided between the flat disk and the second planet carrier, and the third spacer sleeve is rotatably sleeved on the middle shaft.

[0013] Further improvement is as follows: The frame includes an armrest and a seat cushion with adjustable heights; a first elastic pull pin for adjusting the height of the armrest is provided on the frame; a second elastic pull pin for adjusting the height of the seat cushion is provided on the frame.

[0014] Further improvement is as follows: A base is provided at the bottom of the frame.

[0015] After adopting the above technical solutions, the following beneficial effects are achieved compared with the existing technologies:

[0016] When we step on the pedal, the pedal drives the crank to rotate. Since the crank is installed on the middle shaft, the middle shaft assembly starts to rotate. Due to the meshing relationship between the external gear of the middle shaft and the planet gear, the planet gear is driven to rotate, and then the sun gear and the flywheel linked to the sun gear are driven to rotate. Cooperating with the internal magnetic control group on the other side of the flywheel, the resistance can be better regulated. The planet gear transmission is more stable than the belt pulley transmission, meeting the experiences of various consumers. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is the structural schematic diagram of the present invention;

[0019] Figure 2 is the exploded structural schematic diagram of the present invention;

[0020] Figure 3 is the exploded structural schematic diagram of the transmission assembly in the present invention;

[0021] Figure 4 is the structural schematic diagram of the flywheel in the present invention;

[0022] Figure 5 is the internal structural schematic diagram of the flywheel in the present invention;

[0023] Figure 6 is the exploded structural schematic diagram of the planetary gear set in the present invention;

[0024] Figure 7 is the structural schematic diagram of the sun gear in the present invention;

[0025] Figure 8 is the exploded structural schematic diagram of the external gear set and the central shaft in the present invention;

[0026] Figure 9 is the exploded structural schematic diagram of the internal magnetic control group in the present invention.

[0027] Explanation of reference numerals: frame 1, transmission assembly 2, flywheel 3, first chamber 31, second chamber 32, first semi-circular pin hole 33, pin 34, planetary gear set 4, first planetary carrier 41, second planetary carrier 42, sun gear 43, planetary gear 44, first spacer sleeve 45, second spacer sleeve 46, second semi-circular pin hole 47, central shaft 5, external gear 51, flat plate 52, third spacer sleeve 53, internal magnetic control group 6, first side plate 61, second side plate 62, magnet seat 63, bearing fixing seat 64, bearing 65, fourth spacer sleeve 66, first flange group 7, second flange group 8, armrest 9, seat cushion 10, base 11, first elastic pull pin 12, second elastic pull pin 13, crank 14, footrest 15. Detailed implementation manners

[0028] Refer to Figures 1-9As shown in the figure, the technical solution adopted in this specific embodiment is: a spinning bike with a planetary gear drive, including a frame 1 and a transmission assembly 2 arranged inside the frame 1. The transmission assembly 2 includes a flywheel 3. The flywheel 3 includes a first chamber 31 and a second chamber 32. An internal magnetic control group 6 for regulating resistance is arranged in the first chamber 31, and an external gear group is rotatably arranged in the second chamber 32;

[0029] The external gear group includes an external gear 51 and a central shaft 5. One end of the external gear 51 away from the flywheel 3 is fixedly connected with a flat plate 52. The central shaft 5 is axially fixedly connected to the middle of the flat plate 52. A planetary gear group 4 is arranged inside the external gear 51. The central shaft 5 is axially rotatably arranged in the middle of the internal magnetic control group 6 and the flywheel 3;

[0030] The planetary gear group 4 includes a first planetary carrier 41, a second planetary carrier 42, a sun gear 43 and three planet gears 44. The first planetary carrier 41 and the second planetary carrier 42 are fixedly connected to the frame 1. The sun gear 43 and the three planet gears 44 are rotatably connected between the first planetary carrier 41 and the second planetary carrier 42. The sun gear 43 is rotatably sleeved on the central shaft 5. The three planet gears 44 are meshed with the internal teeth of the external gear 51. The three planet gears 44 are annularly distributed around the sun gear 43 and meshed with the sun gear 43. The sun gear 43 is fixedly connected to the flywheel 3 coaxially;

[0031] A second flange group 8 is arranged on the side of the flat plate 52 away from the flywheel 3. A first flange group 7 is arranged on the side of the internal magnetic control group 6 away from the flywheel 3. One end of the central shaft respectively rotates through the first flange group 7 and the second flange group 8 and is connected to one end of a crank 14. The other end of the crank 14 is connected to a pedal 15.

[0032] Among them, a plurality of second semi-circular pin holes 47 are arranged on the outer peripheral wall of the protruding part of the sun gear 43. A first semi-circular pin hole 33 corresponding to the second semi-circular pin hole 47 is arranged on the inner peripheral wall of the flywheel 3. The flywheel 3 is fixedly connected to the sun gear through the cooperation of a plurality of pins 34 with the second semi-circular pin hole 47 and the first semi-circular pin hole 33.

[0033] Among them, three first spacer sleeves 45 are arranged between the three planet gears 44 and the first planetary carrier 41. Three second spacer sleeves 46 are respectively arranged between the three planet gears 44 and the second planetary carrier 42. The three first spacer sleeves 45 and the three second spacer sleeves 46 are rotatably sleeved on the rotating shafts of the corresponding planet gears 44.

[0034] Among them, the internal magnetic control group 6 includes a magnet seat 63, a first side plate 61 and a second side plate 62 respectively installed on both sides of the magnet seat 63. A bearing fixing seat 64 is arranged on one side of the first side plate 61 away from the magnet seat 63. A bearing 65 is arranged inside the bearing fixing seat 64. The central shaft 5 sequentially passes through the second side plate 62, the magnet seat 63, the first side plate 61, the bearing 65 and the first flange group 7. A fourth spacer sleeve 66 is arranged between the first flange group 7 and the bearing 65. The first side plate 61, the second side plate 62, the fourth spacer sleeve 66 and the bearing 65 are rotatably sleeved on the central shaft 5.

[0035] Among them, a third spacer sleeve 53 is arranged between the flat disc 52 and the second planet carrier 42. The third spacer sleeve 53 is rotatably sleeved on the central shaft 5.

[0036] Among them, the vehicle frame 1 includes an armrest 9 and a seat cushion 10 with adjustable heights; a first elastic latch 12 for adjusting the height of the armrest 9 is arranged on the vehicle frame 1; a second elastic latch 13 for adjusting the height of the seat cushion 10 is arranged on the vehicle frame 1.

[0037] Among them, a base 11 is arranged at the bottom of the vehicle frame 1.

[0038] The working principle of the present utility model: When we step on the pedal, the pedal drives the crank to rotate. Since the crank is installed on the central shaft, the central shaft starts to rotate. The central shaft is fixedly connected to the external gear through the flat disc, so the external gear rotates accordingly. The internal teeth of the external gear mesh with the teeth of the planetary gear, driving the planetary gear to rotate. Since the planet carrier of the planetary gear is fixed to the vehicle frame, the planet carrier remains stationary, so the planetary gear only rotates on its own axis and does not revolve around the sun gear. Through the meshing relationship between the planetary gear and the sun gear, the sun gear is driven to rotate. Due to the linkage relationship between the sun gear and the flywheel through the pin, the sun gear drives the flywheel to rotate together. Since the diameter of the external gear is larger and the diameter of the sun gear is smaller, when the pedal moves one circle, the flywheel will rotate more circles, that is, at a higher speed. At this time, the magnet on the magnet seat of the internal magnetic control component on the other side of the flywheel rotates relative to the flywheel, cutting the magnetic induction lines and providing a certain resistance effect.

[0039] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and descriptions only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Where the present utility model is not described in detail, it is all well-known technology to those skilled in the art.

Claims

1. A dynamic bicycle with a planetary gear drive, comprising a frame and a transmission assembly arranged inside the frame, characterized in that: The transmission assembly includes a flywheel, the flywheel includes a first chamber and a second chamber, an internal magnetic control group for regulating resistance is arranged in the first chamber, and an external gear group is rotatably arranged in the second chamber; The external gear group includes an external gear and a middle shaft. A flat plate is fixedly connected to one end of the external gear away from the flywheel. The middle shaft is axially fixedly connected to the middle of the flat plate. The middle shaft is axially rotatably arranged in the middle of the internal magnetic control group and the flywheel. A planetary gear group is arranged in the external gear; The planetary gear group includes a first planetary carrier, a second planetary carrier, a sun gear and three planetary gears. The first planetary carrier and the second planetary carrier are fixedly connected to the vehicle frame. The sun gear and the three planetary gears are rotatably connected between the first planetary carrier and the second planetary carrier. The sun gear is rotatably sleeved on the middle shaft. The three planetary gears are meshed with the internal teeth of the external gear. The three planetary gears are annularly distributed centered on the sun gear and meshed with the sun gear. The sun gear is fixedly connected to the flywheel coaxially; A second flange group is arranged on one side of the flat plate away from the flywheel. A first flange group is arranged on one side of the internal magnetic control group away from the flywheel. Two ends of the middle shaft respectively pass through the first flange group and the second flange group and are connected to one end of a crank. The other end of the crank is connected to a foot pedal.

2. The dynamic bicycle with planetary gear drive according to claim 1, characterized in that: A plurality of second semi-circular pin holes are arranged on the outer peripheral wall of the protruding part of the sun gear. First semi-circular pin holes corresponding to the second semi-circular pin holes are arranged on the inner peripheral wall of the flywheel. The flywheel is fixedly connected to the sun gear through the cooperation of a plurality of pins with the second semi-circular pin holes and the first semi-circular pin holes.

3. A dynamic bicycle with a planetary gear drive according to claim 1, characterized in that: Three first spacer sleeves are arranged between the three planetary gears and the first planetary carrier. Three second spacer sleeves are respectively arranged between the three planetary gears and the second planetary carrier. The three first spacer sleeves and the three second spacer sleeves are rotatably sleeved on the rotating shafts of the corresponding planetary gears.

4. A dynamic bicycle with planetary gear transmission according to claim 1, characterized in that: The internal magnetic control group includes a magnet seat, a first side plate and a second side plate respectively installed on both sides of the magnet seat. A bearing fixing seat is arranged on one side of the first side plate away from the magnet seat. A bearing is arranged in the bearing fixing seat. The middle shaft sequentially passes through the second side plate, the magnet seat, the first side plate, the bearing and the first flange group. A fourth spacer sleeve is arranged between the first flange group and the bearing. The first side plate, the second side plate, the fourth spacer sleeve and the bearing are rotatably sleeved on the middle shaft.

5. A dynamic bicycle with a planetary gear drive according to claim 1, characterized in that: A third spacer sleeve is arranged between the flat plate and the second planetary carrier. The third spacer sleeve is rotatably sleeved on the middle shaft.

6. A dynamic bicycle with a planetary gear drive according to claim 1, characterized in that: The vehicle frame includes an armrest and a seat cushion with adjustable height; a first elastic pull pin for adjusting the height of the armrest is arranged on the vehicle frame; a second elastic pull pin for adjusting the height of the seat cushion is arranged on the vehicle frame.

7. A dynamic bicycle with a planetary gear drive according to claim 1, characterized in that: A base is arranged at the bottom of the vehicle frame.

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