Rear tooth flywheel motor combination

Abstract

The utility model discloses a rear tooth flywheel motor combination, which relates to the technical field of bicycles and comprises a flywheel body, a wheel shaft penetrates through the center of the flywheel body and is connected with the flywheel body, and the wheel shaft is rotatably connected with the flywheel body through a main bearing; one side of the flywheel body is connected with a wheel body lock cap, an electric hub is fixedly installed on the other side of the flywheel body, a ratchet wheel is installed on the side, away from the flywheel body, of the electric hub, a sealing cover seat is installed at the position, located on the ratchet wheel, of the electric hub, the periphery of the sealing cover seat is connected with an inner ring of the ratchet wheel, and a sealing cover is arranged in the sealing cover seat. An inner ring of the sealing cover is connected with the wheel shaft, and one side, close to the electric hub, of the wheel shaft is connected with a wire; the first bearing and the second bearing are radial bearings, the third bearing is an axial bearing, the first bearing and the second bearing are used for solving the axial force and the radial force of axle installation respectively, and the service life of the flywheel combination is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a rear gear flywheel motor combination. Background Art

[0002] The principle of the bicycle transmission shaft is that the front part of the transmission shaft uses a pair of bevel gears to convert the transmission torque from horizontal to vertical, and then transmits the torque to the rear part of the transmission shaft through the transmission shaft, and then a pair of bevel gears convert the longitudinal torque into horizontal, and finally transmits the torque to the wheel to drive the vehicle. At present, the gear on the rear wheel hub of the traditional shaft-driven bicycle does not have a flywheel device. In this case, when the rear wheel rotates, the transmission shaft is driven and the pedal axis also rotates, which is prone to accidents. In addition, the flywheel structure used for chain transmission now has ratchet teeth inside the flywheel so that when the flywheel rotates forward, the flywheel and the axle rotate synchronously, and the flywheel slips relative to the axle when it is reversed. The existing flywheel structure cannot be repaired after the ratchet is damaged, and the entire flywheel can only be replaced. In addition, the existing flywheel structure axial rotation and the internal friction of the rear flywheel gear cause the torsional force, and the torsional rotation causes the rear flywheel to have a very low life. Utility Model Content

[0003] The utility model aims to provide a rear-tooth flywheel motor combination to solve the technical problem of low flywheel life.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A rear-tooth flywheel motor combination comprises a flywheel body, a wheel axle is connected through the center of the flywheel body, and the wheel axle is rotatably connected to the flywheel body through a main bearing; a wheel body locking cap is connected to one side of the flywheel body, an electric flower hub is fixedly installed on the other side of the flywheel body, a ratchet gear is installed on the side of the electric flower hub away from the flywheel body, a cover seat is installed on the electric flower hub at the ratchet gear, the outer periphery of the cover seat is connected to the inner ring of the ratchet gear, a cover is arranged in the cover seat, the inner ring of the cover is connected to the wheel axle, and a wire is connected to the side of the wheel axle close to the electric flower hub.

[0006] As a further solution of the utility model: the flywheel body includes a flywheel main body, a flywheel cover is fixedly connected to one side of the flywheel main body, a lock cap joint matching with the wheel body lock cap is fixedly arranged on the other side of the flywheel main body, and a flower hub joint matching with the electric flower hub is fixedly arranged on the flywheel cover.

[0007] As a further solution of the utility model: the wheel axle includes a main shaft rod, the main shaft rod passes through the flywheel body, a threaded rod is fixedly provided at one end of the main shaft rod, and a limited position seat is fixedly provided on the threaded rod.

[0008] As a further solution of the utility model: a joint screw is fixedly provided at the other end of the main shaft rod, and a wire interface connected to the wire is provided on the joint screw.

[0009] As a further solution of the utility model: a first bearing is arranged between the electric hub and the ratchet gear, a second bearing is arranged between the ratchet gear and the cover seat, and a third bearing is arranged between the cover seat and the cover.

[0010] As a further solution of the utility model: an adjustment washer is arranged between the joint screw and the hub joint.

[0011] As a further solution of the utility model: the electric flower hub comprises a flower hub cap, a gear sleeve is fixedly arranged on the flower hub cap, and a sealing sleeve is fixedly arranged on one end of the gear sleeve.

[0012] As a further solution of the utility model: the ratchet gear comprises a ratchet sleeve, one end of the ratchet sleeve is provided with external gear teeth, and the inner circumference of the ratchet sleeve is provided with internal tooth grooves.

[0013] As a further solution of the utility model: the outer periphery of the gear sleeve is provided with a spring ring groove, and a spring ring is installed in the spring ring groove; the outer peripheries of the gear sleeve and the cover sleeve are both provided with a plurality of ratchet grooves, and ratchets are installed in the ratchet grooves.

[0014] As a further solution of the utility model: the end of the joint screw is threadedly connected with a wire locking cap for locking the wire.

[0015] Beneficial effects of the utility model:

[0016] (1) Bearing 1 is arranged between the electric hub and the ratchet gear, bearing 2 is arranged between the ratchet gear and the cover seat, and bearing 3 is arranged between the cover seat and the cover. Bearing 1 and bearing 2 are radial bearings, and bearing 3 is an axial bearing, which are respectively used to solve the axial force and radial force of the wheel axle installation, thereby effectively improving the service life of the flywheel assembly.

[0017] (2) The electric flower hub is driven to rotate by the wheel axle. When the electric flower hub rotates forward, the ratchet is inserted into the inner tooth groove to limit and lock the wheel axle. When the electric flower hub rotates backward, the inner tooth groove cannot limit the ratchet and the wheel axle rotates idly. The spring ring is used to support the ratchet to ensure that the ratchet can be accurately inserted into the inner tooth groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the axonometric structure of the utility model as a whole;

[0021] Figure 3 It is a schematic diagram of the main structure of the utility model as a whole;

[0022] Figure 4 This utility model Figure 3 Schematic diagram of the cross-sectional structure in the AA direction;

[0023] Figure 5 It is a schematic diagram of the exploded structure of the ratchet component of the utility model.

[0024] In the figure: 1. flywheel body; 101. flywheel body; 102. lock cap joint; 103. flywheel cover; 104. hub joint; 2. wheel body lock cap; 3. wheel axle; 31. spindle rod; 32. threaded rod; 33. limit seat; 34. joint screw; 35. wire interface; 4. main bearing; 5. electric hub; 51. hub cap; 52. gear sleeve; 53. cover sleeve; 54. spring ring groove; 55. ratchet groove; 6. adjustment washer; 7. ratchet gear; 71. ratchet sleeve; 72. outer gear; 73. inner gear groove; 8. cover seat; 9. cover; 10. bearing one; 11. bearing two; 12. bearing three; 13. wire lock cap; 14. wire; 15. spring ring; 16. ratchet. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 5 As shown, the utility model is a rear-tooth flywheel motor combination, including a flywheel body 1, a wheel axle 3 is connected through the center of the flywheel body 1, and the wheel axle 3 is rotatably connected to the flywheel body 1 through a main bearing 4; a wheel body locking cap 2 is connected to one side of the flywheel body 1, and an electric flower hub 5 is fixedly installed on the other side of the flywheel body 1, and a ratchet gear 7 is installed on the side of the electric flower hub 5 away from the flywheel body 1, and a cover seat 8 is installed on the electric flower hub 5 at the ratchet gear 7, and the outer periphery of the cover seat 8 is connected to the inner ring of the ratchet gear 7, and a cover 9 is arranged in the cover seat 8, and the inner ring of the cover 9 is connected to the wheel axle 3, and a wire 14 is connected to the side of the wheel axle 3 close to the electric flower hub 5.

[0027] The flywheel body 1 includes a flywheel main body 101, a flywheel cover 103 is fixedly connected to one side of the flywheel main body 101, a lock cap connector 102 that matches the wheel body lock cap 2 is fixedly arranged on the other side of the flywheel main body 101, and a flower hub connector 104 that matches the electric flower hub 5 is fixedly arranged on the flywheel cover 103.

[0028] The wheel axle 3 includes a main shaft rod 31 , and the main shaft rod 31 passes through the flywheel body 1 . A threaded rod 32 is fixedly disposed at one end of the main shaft rod 31 , and a limited position seat 33 is fixedly disposed on the threaded rod 32 .

[0029] A joint screw 34 is fixedly provided at the other end of the main shaft rod 31 , and a wire interface 35 connected to the wire 14 is provided on the joint screw 34 . The threaded rod 32 and the joint screw 34 are provided for installing the flywheel body 1 .

[0030] A bearing 10 is arranged between the electric flower hub 5 and the ratchet gear 7, a bearing 2 11 is arranged between the ratchet gear 7 and the cover seat 8, and a bearing 3 12 is arranged between the cover seat 8 and the cover 9, wherein bearing 10 and bearing 2 11 are radial bearings, and bearing 3 12 is an axial bearing, which are respectively used to solve the axial force and radial force of the installation of the wheel axle 3, thereby effectively improving the service life of the flywheel assembly.

[0031] An adjusting washer 6 is provided between the joint screw 34 and the hub joint 104 . The setting of the adjusting washer 6 improves the installation stability between the wheel axle 3 and the flywheel body 1 .

[0032] The electric flower hub 5 includes a flower hub cap 51, on which a gear sleeve 52 is fixedly provided, and a cover sleeve 53 is fixedly provided at one end of the gear sleeve 52, wherein the flower hub cap 51 is used to cooperate with the flower hub joint 104, the gear sleeve 52 cooperates with the inner ring of the ratchet gear 7, and the outer periphery of the cover sleeve 53 is provided with threads for installing the cover seat 8.

[0033] The ratchet gear 7 includes a ratchet sleeve 71 , one end of which is provided with external gear teeth 72 , and the inner periphery of the ratchet sleeve 71 is provided with internal tooth grooves 73 .

[0034] The gear sleeve 52 is provided with a spring ring groove 54 on its periphery, and a spring ring 15 is installed at the spring ring groove 54. The gear sleeve 52 and the cover sleeve 53 are both provided with a plurality of ratchet grooves 55 on their peripheries, and a ratchet 16 is installed at the ratchet groove 55. The ratchet 16 cooperates with the inner tooth groove 73 inside the ratchet sleeve 71 to drive the electric flower hub 5 to rotate through the wheel axle 3. When the electric flower hub 5 rotates forward, the ratchet 16 is inserted into the inner tooth groove 73 to limit and lock the wheel axle 3. When the electric flower hub 5 rotates backward, the inner tooth groove 73 cannot limit the ratchet 16, and the wheel axle 3 rotates idly. The spring ring 15 is used to support the ratchet 16 to ensure that the ratchet 16 can be accurately inserted into the inner tooth groove 73.

[0035] The end of the joint screw rod 34 is threadedly connected with a wire locking cap 13 for locking the wire 14 . The setting of the wire locking cap 13 ensures the stability of the connection of the wire 14 .

[0036] The working principle of the utility model is as follows: in the electric hub 5 structure of the rear wheel of the electric power-assisted bicycle, the wheel axle 3 drives the motor forward, the electric hub 5 is spirally fixed on the flywheel body 1, the internal wheel axle 3 is not subjected to force, the ratchet 16 is stepped forward in an outwardly stretched state, driving the rear wheel of the electric hub forward, and stepping backward is idling, the bearing 10 and the bearing 2 11 solve the radial force, the bearing 3 12 and the cover 9 completely solve the axial force problem and the necessary complete packaging problem.

[0037] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A rear-gear flywheel motor assembly, characterized in that: The invention comprises a flywheel body (1), wherein a wheel axle (3) is connected through the center of the flywheel body (1), and the wheel axle (3) is rotatably connected to the flywheel body (1) via a main bearing (4); a wheel body locking cap (2) is connected to one side of the flywheel body (1), and an electric flower hub (5) is fixedly installed on the other side of the flywheel body (1); a ratchet gear (7) is installed on the side of the electric flower hub (5) away from the flywheel body (1); a sealing seat (8) is installed on the electric flower hub (5) at the ratchet gear (7); the outer periphery of the sealing seat (8) is connected to the inner ring of the ratchet gear (7); a sealing cover (9) is arranged inside the sealing seat (8); the inner ring of the sealing cover (9) is connected to the wheel axle (3); and a wire (14) is connected to the side of the wheel axle (3) close to the electric flower hub (5).

2. A rear-gear flywheel motor assembly according to claim 1, characterized in that: The flywheel body (1) comprises a flywheel main body (101), one side of the flywheel main body (101) is fixedly connected to a flywheel cover (103), the other side of the flywheel main body (101) is fixedly provided with a lock cap connector (102) that matches with a wheel body lock cap (2), and the flywheel cover (103) is fixedly provided with a hub connector (104) that matches with an electric hub (5).

3. The rear-gear flywheel motor assembly according to claim 1, characterized in that: The wheel axle (3) comprises a main shaft rod (31), the main shaft rod (31) passes through the flywheel body (1), a threaded rod (32) is fixedly arranged at one end of the main shaft rod (31), and a limited position seat (33) is fixedly arranged on the threaded rod (32).

4. A rear-gear flywheel motor assembly according to claim 3, characterized in that: A joint screw (34) is fixedly provided at the other end of the main shaft rod (31), and a wire interface (35) connected to the wire (14) is provided on the joint screw (34).

5. The rear-gear flywheel motor assembly according to claim 1, characterized in that: A bearing 1 (10) is arranged between the electric hub (5) and the ratchet gear (7), a bearing 2 (11) is arranged between the ratchet gear (7) and the sealing seat (8), and a bearing 3 (12) is arranged between the sealing seat (8) and the sealing cover (9).

6. A rear-gear flywheel motor assembly according to claim 4, characterized in that: An adjusting washer (6) is provided between the joint screw (34) and the hub joint (104).

7. The rear-gear flywheel motor assembly according to claim 1, characterized in that: The electric flower hub (5) comprises a flower hub cap (51), a gear sleeve (52) is fixedly arranged on the flower hub cap (51), and a sealing sleeve (53) is fixedly arranged on one end of the gear sleeve (52).

8. The rear-gear flywheel motor assembly according to claim 7, characterized in that: The ratchet gear (7) comprises a ratchet sleeve (71), one end of which is provided with external gear teeth (72), and the inner circumference of the ratchet sleeve (71) is provided with internal tooth grooves (73).

9. A rear-gear flywheel motor assembly according to claim 8, characterized in that: The outer periphery of the gear sleeve (52) is provided with a spring ring groove (54), and a spring ring (15) is installed in the spring ring groove (54); the outer peripheries of the gear sleeve (52) and the cover sleeve (53) are both provided with a plurality of ratchet grooves (55), and ratchets (16) are installed in the ratchet grooves (55).

10. The rear-gear flywheel motor assembly according to claim 4, characterized in that: The end of the joint screw rod (34) is threadedly connected with a wire locking cap (13) for locking the wire (14).

Images