Indoor bicycle transmission mechanism

Abstract

The invention discloses an indoor bicycle transmission mechanism which comprises a base, a rotating shaft, two cranks, a cast wheel, a first transmission mechanism body, a second transmission mechanism body, a transmission shaft, a driving wheel, a driving wheel and a transmission wheel, the rotating shaft and the transmission shaft are rotationally connected to the two ends of the base respectively, and the first ends of the two cranks are fixed to the two ends of the rotating shaft respectively; the second end of the crank is rotatably connected with a pedal, the casting wheel rotatably sleeves the rotating shaft, the driving wheel is fixed to the rotating shaft, the driving wheel is fixed to the casting wheel, the casting wheel, the driving wheel, the driving wheel and the rotating shaft are coaxial, the transmission wheel is fixed to the transmission shaft, the transmission wheel and the transmission shaft are coaxial, and a first transmission part and a second transmission part are arranged in the middle of the transmission wheel side by side. The driving wheel is in transmission connection with the second transmission part of the transmission wheel through a second transmission mechanism, the transmission wheel can be driven by the driving wheel to rotate, and the casting wheel can be driven by the transmission wheel to rotate. The structure is compact, and different transmission ratios can be conveniently achieved.

Description

Technical Field

[0001] The invention relates to a transmission mechanism, in particular to an indoor bicycle transmission mechanism. Background Art

[0002] At present, indoor bicycles (spinning bikes) are a common fitness equipment. However, the transmission mechanism of indoor bicycles has the disadvantages of complex structure and excessive size. This will result in the indoor bicycles being not compact enough, causing excessive crowding of indoor space, thereby causing inconvenience to users and affecting the competitiveness of the product. Summary of the Invention

[0003] In order to overcome the above-mentioned drawbacks, the present invention provides an indoor bicycle transmission mechanism, which has the advantages of compact structure and convenient realization of different transmission ratios.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an indoor bicycle transmission mechanism, comprising: a base, a rotating shaft, a crank, a casting wheel, a first transmission mechanism, a second transmission mechanism, a transmission shaft, a driving wheel, a driving wheel and a transmission wheel, the rotating shaft and the transmission shaft are rotatably connected to the two ends of the base respectively, the number of the cranks is two, the first ends of the two cranks are respectively fixed to the two ends of the rotating shaft, the second ends of the cranks are rotatably connected to the pedals, the casting wheel is rotatably sleeved on the rotating shaft, the driving wheel is fixed to the rotating shaft, the driving wheel is fixed to the casting wheel, the casting wheel, the driving wheel, the driving wheel and the rotating shaft are coaxial, the transmission wheel is fixed to the transmission shaft, the transmission wheel and the transmission shaft are coaxial, the middle part of the transmission wheel is provided with a first transmission part and a second transmission part side by side, the driving wheel is connected to the first transmission part of the transmission wheel through the first transmission mechanism, the driving wheel is connected to the second transmission part of the transmission wheel through the second transmission mechanism, the transmission wheel can rotate under the drive of the driving wheel, and the casting wheel can rotate under the drive of the transmission wheel.

[0005] Optionally, it further includes a first bearing and two second bearings, the middle portion of the rotating shaft is rotatably connected to the base via the first bearing, and both ends of the rotating shaft are rotatably connected to the base via the second bearings.

[0006] Optionally, the first transmission mechanism is a first transmission belt, and the second transmission mechanism is a second transmission belt.

[0007] Optionally, the diameter of the driving wheel is larger than the diameter of the first transmission part of the transmission wheel.

[0008] Optionally, the casting wheel is made of cast iron, and the outer surface of the casting wheel is wrapped with magnetic isolation material.

[0009] Optionally, a bearing seat is detachably provided on the base, and two fixing holes are provided on the bearing seat for the outer ring of the second bearing to be inserted into, and the inner ring of the second bearing can be respectively sleeved on both ends of the transmission shaft.

[0010] Optionally, the diameters of the first transmission part and the second transmission part of the transmission wheel are different.

[0011] Optionally, a strap is provided on the foot pedal.

[0012] Optionally, a Hall sensor is further included. The Hall sensor is disposed on the base, and a magnet is disposed on one side of the casting wheel side wall corresponding to the Hall sensor.

[0013] Optionally, a groove is provided on the surface of the driving wheel in contact with the first transmission belt.

[0014] The beneficial technical effects of the present invention are as follows: The indoor bicycle transmission mechanism includes a base, a rotating shaft, a crank, a casting wheel, a first transmission mechanism, a second transmission mechanism, and a transmission shaft. When in use, the user steps on the foot pedal to drive the crank to rotate, and then drives the rotating shaft and the driving wheel to rotate. The driving wheel drives the transmission shaft and the transmission wheel to rotate through the first transmission mechanism, and the transmission wheel drives the driven wheel to rotate through the second transmission mechanism, thereby driving the casting wheel to rotate. Compared with the scheme where the casting wheel is placed in front of or behind the vehicle body, since there is no need to separately provide a base for the casting wheel, the occupied space of the casting wheel is reduced, so the structure is compact. Compared with the scheme where the casting wheel is directly connected to the rotating shaft, since the driving wheel and the transmission wheel are provided, the manufacturer can achieve different transmission ratios by using driving wheels and transmission wheels with different diameters in combination during production, so as to adapt to users with different needs and can more conveniently achieve different transmission ratios. It has the advantages of a compact structure and convenient implementation of different transmission ratios. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional view of the present invention;

[0016] Figure 2 is a top view of the whole machine of the present invention;

[0017] Wherein:

[0018] 1, rotating shaft; 2, crank; 3, casting wheel; 4, first transmission mechanism; 5, second transmission mechanism;

[0019] 6, transmission shaft; 7, foot pedal; 8, driving wheel; 9, transmission wheel; 10, strap. DETAILED DESCRIPTION OF THE INVENTION

[0020] In order to more clearly understand the technical means of the present invention and be implemented in accordance with the content of the specification, the following further describes the specific implementation manners of the present invention in detail with reference to the drawings and embodiments. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0021] Embodiment 1

[0022] As Figure 1 and Figure 2 shown, the present application discloses an indoor bicycle transmission mechanism, including: a base, a rotating shaft 1, a crank 2, a casting wheel 3, a first transmission mechanism 4, a second transmission mechanism 5, a transmission shaft 6, a driving wheel 8, a driving wheel, and a transmission wheel 9. The rotating shaft 1 and the transmission shaft 6 are respectively rotatably connected to both ends of the base. The number of cranks 2 is two, and the first ends of the two cranks 2 are respectively fixed to both ends of the rotating shaft 1. The second ends of the cranks 2 are rotatably connected to a foot pedal 7. The casting wheel 3 is rotatably sleeved on the rotating shaft 1. The driving wheel 8 is fixed to the rotating shaft 1. The driving wheel is fixed to the casting wheel 3. The casting wheel 3, the driving wheel 8, the driving wheel, and the rotating shaft 1 are coaxial. The transmission wheel 9 is fixed to the transmission shaft 6. The transmission wheel 9 and the transmission shaft 6 are coaxial. A first transmission part and a second transmission part are arranged side by side in the middle of the transmission wheel 9. The driving wheel 8 is drivingly connected to the first transmission part of the transmission wheel 9 through the first transmission mechanism 4. The driving wheel is drivingly connected to the second transmission part of the transmission wheel 9 through the second transmission mechanism 5. The transmission wheel 9 can rotate driven by the driving wheel 8, and the casting wheel 3 can rotate driven by the transmission wheel 9. When in use, the user steps on the foot pedal 7 to drive the crank 2 to rotate and drive the rotating shaft 1 and the driving wheel 8 to rotate. The driving wheel 8 drives the transmission shaft 6 and the transmission wheel 9 to rotate through the first transmission mechanism 4. The transmission wheel 9 drives the driving wheel to rotate through the second transmission mechanism 5 to drive the casting wheel 3 to rotate. Compared with the scheme where the casting wheel is placed in front of or behind the vehicle body, since there is no need to separately set a base for the casting wheel, the space occupied by the casting wheel is reduced, so the structure is compact. Compared with the scheme where the casting wheel is directly connected to the rotating shaft, since there are a driving wheel and a transmission wheel, the manufacturer can achieve different transmission ratios by using driving wheels and transmission wheels with different diameters in combination during production, so as to adapt to users with different needs and can more conveniently achieve different transmission ratios. It has the advantages of a compact structure and being convenient to achieve different transmission ratios.

[0023] Optionally, in this embodiment, it further includes a first bearing and two second bearings. The middle part of the rotating shaft 1 is rotatably connected to the base through the first bearing, and both ends of the rotating shaft are rotatably connected to the base through the second bearings.

[0024] Optionally, in this embodiment, the first transmission mechanism 4 is a first transmission belt, and the second transmission mechanism 5 is a second transmission belt.

[0025] Optionally, in this embodiment, the diameter of the driving wheel 8 is larger than the diameter of the first transmission part of the transmission wheel 9.

[0026] Optionally, in this embodiment, a bearing seat is detachably provided on the base. Two fixing holes for the outer ring of the second bearing to be snapped into are formed in the bearing seat. The inner rings of the second bearings can be respectively sleeved on both ends of the transmission shaft 6. The detachable bearing seat facilitates the user to replace the transmission wheel 9 rotatably connected to the bearing seat by removing the bearing seat. The user can achieve the switching of different transmission ratios by replacing the transmission wheels 9 with different diameters, so as to adapt to their own needs.

[0027] Optionally, in this embodiment, the diameters of the first transmission part and the second transmission part of the transmission wheel 9 are different.

[0028] Optionally, in this embodiment, a strap 10 is provided on the foot pedal 7. The strap 10 can tie the user's shoes to prevent the shoes from accidentally detaching from the foot pedal 7.

[0029] Optionally, in this embodiment, a Hall sensor is further included. The Hall sensor is arranged on the base, and a magnet is arranged on one side of the side wall of the casting wheel 3 corresponding to the Hall sensor. Driven by the casting wheel 3, the magnet moves close to the Hall sensor, and the Hall sensor can detect the magnetic force of the magnet, and detect the rotation speed of the casting wheel 3 by detecting the frequency of the magnetic force change.

[0030] Optionally, in this embodiment, a groove is provided on the surface of the driving wheel 8 in contact with the first transmission belt. The groove can increase the friction between the driving wheel 8 and the first transmission belt to prevent slipping.

[0031] Using the indoor bicycle transmission mechanism in this embodiment has the advantages of compact structure and convenient implementation of different transmission ratios.

[0032] Embodiment 2

[0033] The present application discloses an indoor bicycle transmission mechanism, including: a base, a rotating shaft 1, a crank 2, a casting wheel 3, a first transmission mechanism 4, a second transmission mechanism 5, a transmission shaft 6, a driving wheel 8, a driving wheel and a transmission wheel 9. The rotating shaft 1 and the transmission shaft 6 are respectively rotatably connected to both ends of the base. The number of cranks 2 is two. The first ends of the two cranks 2 are respectively fixed to both ends of the rotating shaft 1. The second ends of the cranks 2 are rotatably connected with pedals 7. The casting wheel 3 is rotatably sleeved on the rotating shaft 1. The driving wheel 8 is fixed to the rotating shaft 1. The driving wheel is fixed to the casting wheel 3. The casting wheel 3, the driving wheel 8, the driving wheel and the rotating shaft 1 are coaxial. The transmission wheel 9 is fixed to the transmission shaft 6. The transmission wheel 9 and the transmission shaft 6 are coaxial. A first transmission part and a second transmission part are arranged side by side in the middle of the transmission wheel 9. The driving wheel 8 is drivingly connected to the first transmission part of the transmission wheel 9 through the first transmission mechanism 4. The driving wheel is drivingly connected to the second transmission part of the transmission wheel 9 through the second transmission mechanism 5. The transmission wheel 9 can rotate driven by the driving wheel 8. The casting wheel 3 can rotate driven by the transmission wheel 9. When in use, the user steps on the pedals 7 to drive the cranks 2 to rotate and drive the rotating shaft 1 and the driving wheel 8 to rotate. The driving wheel 8 drives the transmission shaft 6 and the transmission wheel 9 to rotate through the first transmission mechanism 4. The transmission wheel 9 drives the driving wheel to rotate through the second transmission mechanism 5 so as to drive the casting wheel 3 to rotate. Compared with the scheme where the casting wheel is placed in front of or behind the vehicle body, since there is no need to separately set a base for the casting wheel, the space occupied by the casting wheel is reduced, so the structure is compact. Compared with the scheme where the casting wheel is directly connected to the rotating shaft, since there are a driving wheel and a transmission wheel, the manufacturer can achieve different transmission ratios by using driving wheels and transmission wheels with different diameters in combination during production, so as to adapt to users with different needs and can more conveniently achieve different transmission ratios. It has the advantages of compact structure and convenient realization of different transmission ratios.

[0034] Optionally, in this embodiment, it further includes a first bearing and two second bearings. The middle part of the rotating shaft 1 is rotatably connected to the base through the first bearing. Both ends of the rotating shaft are rotatably connected to the base through the second bearings.

[0035] Optionally, in this embodiment, the first transmission mechanism 4 is a first transmission belt, and the second transmission mechanism 5 is a second transmission belt.

[0036] Optionally, in this embodiment, the diameter of the driving wheel 8 is larger than the diameter of the first transmission part of the transmission wheel 9.

[0037] Optionally, in this embodiment, the casting wheel 3 is made of cast iron, and a magnetic isolation material is wrapped on the outer surface of the casting wheel 3. Wrapping the magnetic isolation material on the outer surface of the casting wheel 3 can prevent the cast iron casting wheel 3 from being magnetized, and at the same time prevent magnetic debris from being accidentally adsorbed on the casting wheel 3 and being thrown out during the rotation of the casting wheel 3.

[0038] Optionally, in this embodiment, a bearing seat is detachably arranged on the base. Two fixing holes for the outer ring of the second bearing to be inserted are formed in the bearing seat, and the inner rings of the second bearings can be respectively sleeved on both ends of the transmission shaft 6. The detachable bearing seat is provided to facilitate the user to replace the transmission wheel 9 rotatably connected to the bearing seat by removing the bearing seat. The user can achieve the switching of different transmission ratios by replacing the transmission wheels 9 with different diameters, so as to adapt to their own needs.

[0039] Optionally, in this embodiment, the diameters of the first transmission part and the second transmission part of the transmission wheel 9 are different.

[0040] Optionally, in this embodiment, a strap 10 is arranged on the pedal 7. The arrangement of the strap 10 can tie the user's shoes to prevent the shoes from accidentally detaching from the pedal 7.

[0041] Optionally, in this embodiment, a groove is arranged on the surface of the driving wheel 8 in contact with the first transmission belt. The arrangement of the groove can increase the friction between the driving wheel 8 and the first transmission belt to prevent slipping.

[0042] Using the indoor bicycle transmission mechanism in this embodiment has the advantages of a compact structure and being convenient to achieve different transmission ratios.

Claims

1. An indoor bicycle transmission mechanism, characterized in that, Including: A base, a rotating shaft (1), a crank (2), a casting wheel (3), a first transmission mechanism (4), a second transmission mechanism (5), a transmission shaft (6), a driving wheel (8), a driving pulley and a transmission wheel (9). The rotating shaft (1) and the transmission shaft (6) are respectively rotatably connected to both ends of the base. The number of the cranks (2) is two. The first ends of the two cranks (2) are respectively fixed to both ends of the rotating shaft (1). The second ends of the cranks (2) are rotatably connected with pedals (7). The casting wheel (3) is rotatably sleeved on the rotating shaft (1). The driving wheel (8) is fixed to the rotating shaft (1). The driving pulley is fixed to the casting wheel (3). The casting wheel (3), the driving wheel (8), the driving pulley and the rotating shaft (1) are coaxial. The transmission wheel (9) is fixed to the transmission shaft (6). The transmission wheel (9) and the transmission shaft (6) are coaxial. A first transmission part and a second transmission part are arranged side by side in the middle of the transmission wheel (9). The driving wheel (8) is in transmission connection with the first transmission part of the transmission wheel (9) through the first transmission mechanism (4). The driving pulley is in transmission connection with the second transmission part of the transmission wheel (9) through the second transmission mechanism (5). The transmission wheel (9) can rotate driven by the driving wheel (8). The casting wheel (3) can rotate driven by the transmission wheel (9).

2. The indoor bicycle transmission mechanism according to claim 1, wherein: It further includes a first bearing and two second bearings. The middle part of the rotating shaft (1) is rotatably connected to the base through the first bearing. Both ends of the rotating shaft are rotatably connected to the base through the second bearings.

3. The indoor bicycle transmission mechanism according to claim 1, wherein: The first transmission mechanism (4) is a first transmission belt, and the second transmission mechanism (5) is a second transmission belt.

4. The indoor bicycle transmission mechanism according to claim 1, wherein: The diameter of the driving wheel (8) is larger than the diameter of the first transmission part of the transmission wheel (9).

5. The indoor bicycle transmission mechanism according to claim 1, wherein: The casting wheel (3) is made of cast iron, and a magnetic isolation material is wrapped on the outer surface of the casting wheel (3).

6. The indoor bicycle transmission mechanism according to claim 2, characterized in that: A bearing seat is detachably arranged on the base. Two fixing holes for the outer rings of the second bearings to be snapped into are formed on the bearing seat. The inner rings of the second bearings can be respectively sleeved on both ends of the transmission shaft (6).

7. The indoor bicycle transmission mechanism according to claim 6, characterized in that: The diameters of the first transmission part and the second transmission part of the transmission wheel (9) are different.

8. The indoor bicycle transmission mechanism according to claim 1, wherein: A strap (10) is arranged on the pedal (7).

9. The indoor bicycle transmission mechanism according to claim 1, wherein: It further includes a Hall sensor. The Hall sensor is arranged on the base, and a magnet is arranged on one side of the side wall of the casting wheel (3) corresponding to the Hall sensor.

10. The indoor bicycle transmission mechanism according to claim 3, characterized in that: A groove is arranged on the surface of the driving wheel (8) in contact with the first transmission belt.

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