A hidden wire outlet structure on the motor side

Abstract

The invention discloses a motor side hidden wire outlet structure, and its technical scheme comprises a motor, a motor shaft and two frame plates, wherein the motor and the two frame plates are sleeved on the motor shaft, and the two frame plates are located on both sides of the motor, an iron core and a magnetic steel ring are arranged in the motor, the iron core is sleeved on the motor shaft through a key sleeve, the magnetic steel ring is sleeved on the motor shaft, a magnetic steel is arranged on the magnetic steel ring, and the magnetic steel is arranged corresponding to the circumferential surface of the iron core, a wire outlet groove is arranged on the motor shaft, and the iron core is connected with the wire outlet, and the wire outlet extends from the inside of the motor to the outside of the motor through the wire outlet groove and is located between the motor and the frame plate, thereby solving the problems that the wire outlet is easily damaged and the strength of the frame plate is low.

Description

Technical Field

[0001] The invention relates to a motor of an electric bicycle, and more particularly to a motor side hidden wire outlet structure. Background Art

[0002] Electric bicycles are one of the common means of transportation in life. As life tends to be more convenient, many places provide free charging, and the use of electric bicycles is becoming more and more popular. The motor of an electric bicycle is placed on the axle of the rear wheel, and the output wires of the motor extend along the motor shaft to the side of the wheel and pass through the frame to connect to the battery. The output wires extend from the shaft end of the motor shaft, which has defects: first, holes need to be opened on the frame for the output wires to pass through, which will cause the strength of the frame to decrease and make it easy to be damaged; second, the output wires are exposed outside the frame, which is easy to cause damage to the outer skin of the output wires during collision and friction with external objects, resulting in internal wires being exposed, and a safety hazard of leakage. Once water enters on rainy days, it is easy to burn out the circuit and endanger personal safety; third, bumps are prone to occur during riding, and the frame will move relative to the output wires, which can easily break the output wires. Summary of the invention

[0003] In view of the shortcomings of the prior art, an object of the present invention is to provide a motor-side hidden wire outlet structure that can protect the wire outlets and improve the strength of the frame plate.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a motor side hidden wire outlet structure, comprising a motor, a motor shaft and two frame plates, wherein the motor and the two frame plates are sleeved on the motor shaft, and the two frame plates are located on both sides of the motor, an iron core and a magnetic steel ring are arranged in the motor, the iron core is sleeved on the motor shaft through a key sleeve, the magnetic steel ring is sleeved on the motor shaft, a magnetic steel is arranged on the magnetic steel ring, and the magnetic steel is arranged corresponding to the circumferential surface of the iron core, a wire outlet groove is arranged on the motor shaft, and the iron core is connected to the wire outlet, and the wire outlet extends from the inside of the motor to the outside of the motor through the wire outlet groove and is located between the motor and the frame plate.

[0005] As a further improvement of the present invention, a first bearing is sleeved on the motor shaft. The first bearing is located on the side of the iron core away from the magnetic steel ring and is sleeved on the wire outlet groove to limit the outlet wire. The motor is provided with a bearing hole that is compatible with the first bearing.

[0006] As a further improvement of the present invention, a second bearing is also sleeved on the motor shaft, the second bearing is located outside the motor and sleeved on the wire outlet groove, a belt seat is sleeved on the outer ring of the second bearing, a belt seat hole is provided on the motor, the belt seat hole is connected with the bearing hole, the belt seat extends into the belt seat hole along the length direction of the motor shaft, the extension part of the belt seat is separated from the outer surface of the motor shaft, the extension part of the belt seat is outer-circuited with a belt seat lock nut, and the belt seat lock nut is adapted to the belt seat hole.

[0007] As a further improvement of the present invention, a belt flywheel, an adjusting washer and a locking nut are sequentially sleeved on the belt seat along the direction in which the outlet line extends from the inside of the motor to the outside of the motor.

[0008] As a further improvement of the present invention, a spacer sleeve is arranged between the frame plate and the motor, and a flat washer, an elastic washer and a cap nut are arranged in sequence on the side of the frame plate away from the motor, and the spacer sleeve, flat washer, elastic washer and cap nut are all sleeved on the motor shaft.

[0009] As a further improvement of the present invention, a wire outlet for the wire to extend out is provided on the spacer sleeve located on one side of the wire outlet, and the wire outlet is communicated with the wire outlet groove.

[0010] As a further improvement of the present invention, a sun gear is sleeved on the motor shaft, and the sun gear is fixedly connected to the magnetic steel ring. Three planetary gears are arranged around the sun gear, and the three planetary gears are all meshed with the sun gear. The sun gear and the three planetary gears are all located inside the motor.

[0011] As a further improvement of the present invention, a clutch is provided on the fixed sleeve on the motor shaft, and the clutch is located in the motor and connected to the planetary gear.

[0012] As a further improvement of the present invention, a roller brake flange seat is also sleeved on the motor shaft, and the roller brake flange seat is fixedly connected to the end surface away from the first bearing.

[0013] As a further improvement of the present invention, a third bearing is arranged between the roller brake flange seat and the motor shaft.

[0014] The beneficial effects of the present invention are as follows: under the basic condition that the electric bicycle can move forward under the drive of the motor, the outgoing wires connecting the iron core and the battery are changed from passing through the frame plate to not passing through the frame plate, so that the frame plate maintains its own integrity, improves the strength of the frame plate, and is beneficial to extending the life of the frame plate; the outgoing wires are also protected by the frame plate, and even if the bicycle overturns, bumps or bumps, the outgoing wires will not be worn or broken, thereby increasing the service life of the outgoing wires and improving safety at the same time, avoiding the situation where the outgoing wires are damaged by wear and tear, resulting in water seeping into the outgoing wires on rainy days and causing short circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the main cross-sectional view of the present invention.

[0016] Figure 2 It is a front view of the motor shaft of the present invention.

[0017] Figure 3 It is a top view of the motor shaft of the present invention.

[0018] Figure 4 It is a front view of the spacer at the outlet groove of the present invention.

[0019] Figure 5 It is a right side view of the spacer at the wire outlet groove of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below in detail with reference to the embodiments shown in the accompanying drawings.

[0021] Reference Figures 1 to 5 As shown, a motor-side hidden wire-outlet structure of the present embodiment includes a motor 1, a motor shaft 2 and two frame plates 3. The motor 1 and the two frame plates 3 are all sleeved on the motor shaft 2. The two frame plates 3 are located on both sides of the motor 1. An iron core 11 and a magnetic steel ring 12 are provided in the motor 1. The iron core 11 is sleeved on the motor shaft 2 through a key, that is, the iron core 11 always remains stationary relative to the motor shaft 2. The iron core 11 is a stator, and the magnetic steel ring 12 is sleeved on the motor shaft 2. The magnetic steel ring 12 can rotate relative to the motor shaft 2. A magnetic steel 13 is provided on the magnetic steel ring 12. The magnetic steel 13 is arranged corresponding to the circumferential surface of the iron core 11. When the iron core 11 is energized, the magnetic steel 13 drives the magnetic steel ring 11 to rotate relative to the iron core 11 under the magnetic field generated by the iron core 11, so that the motor 1 can rotate relative to the motor shaft 2.

[0022] The motor shaft 2 is provided with a wire outlet slot 21, and the iron core 11 is connected with a wire outlet 14. The wire outlet 14 extends from the inside of the motor 1 to the outside of the motor 1 through the wire outlet slot 21 and is located between the motor 1 and the frame plate 3. The wire outlet 14 is used to connect the iron core 11 and the battery. The electric energy of the battery reaches the iron core 11 through the wire outlet 14, so that the iron core 11 is charged. In the prior art, the wire outlet 14 passes through the frame plate 3 after extending from the inside of the motor, and extends from the outer surface of the frame plate 3 to the battery. However, after the wire outlet 14 of the present invention extends out of the motor 1, it does not pass through the frame plate 3, but extends along the frame plate 3 toward the side of the motor 1 to the battery. In comparison, the latter's non-perforated frame plate 3 is stronger than the former's perforated frame plate 3, and the structure is more stable, which is conducive to extending the service life of the frame plate 3, and at the same time, it is not conducive to the output The wire 14 is also a kind of protection. The outlet wire 14 is located between the frame plate 3 and the motor 1. Even if the bicycle overturns or collides with other objects, the outlet wire 14 will not be affected by the outside world, will not be crushed or worn, and the safety is improved. The outlet wire groove 21 is opened on the motor shaft 1 to avoid the outlet wire 14 being exposed and easily bumped. At the same time, the outlet wire 14 is accommodated in the outlet wire groove 21, which is conducive to the subsequent sleeve of some parts on the motor shaft 1, and the installation and disassembly of the parts are convenient; in order to improve the rotation efficiency of the magnetic steel ring 12, a groove can be dug in the iron core 11 for the magnetic steel ring 12 to be installed, so that when the magnetic steel ring 12 is sleeved on the motor shaft 2, the inner hole of the magnetic steel ring 12 is separated from the outer wall of the motor shaft 2, which makes it possible for the magnetic steel ring 12 to rotate relative to the motor shaft 2 without friction between the two, and the rotation efficiency is high.

[0023] As a specific implementation method of the improvement, refer to Figure 1 As shown, a first bearing 15 is sleeved on the motor shaft 2. The first bearing 15 is located on the side of the iron core 11 away from the magnetic steel ring 12 and is sleeved on the wire outlet groove 21 to limit the outlet wire 14. A bearing hole 17 matched with the first bearing 15 is provided on the motor 1. The design of the first bearing 15 mainly improves the rotation efficiency between the motor 1 and the motor shaft 2 and reduces the wear between the motor 1 and the motor shaft 2. The first bearing 15 is sleeved on the wire outlet groove 21, which can limit the outlet wire 14 in the wire outlet groove 21, so that the outlet wire 14 will not leave the wire outlet groove 21, thereby avoiding the outlet wire 14 from being damaged by wear, improving the protection of the outlet wire 14, and improving the safety of driving.

[0024] As a specific implementation method of the improvement, refer to Figure 1As shown, the motor shaft 2 is also sleeved with a second bearing 16, the second bearing 16 is located outside the motor 1 and sleeved on the outlet groove 21, the outer ring of the second bearing 16 is sleeved with a belt seat 4, the motor 1 is provided with a belt seat hole 18, the belt seat hole 18 is connected with the bearing hole 17, the belt seat 4 extends into the belt seat hole 18 along the length direction of the motor shaft 2, the extended part of the belt seat 4 is outer-coated with a belt seat lock nut 41, the extended part of the belt seat 4 is separated from the outer surface of the motor shaft 2, the belt seat lock nut 41 is adapted to the belt seat hole 18, the belt seat lock nut 41 is installed in the belt seat hole 18 and is opposite to the motor 1 When stationary, the belt seat 4 is connected to the motor 1 through the belt seat lock nut 41. The use of the second bearing 16 and the design that the extended part of the belt seat 4 is separated from the motor shaft 2 make the belt seat 4 and the motor shaft 2 separate from each other. When the belt seat 4 rotates relative to the motor shaft 2, the two will not rub against each other, and the rotation efficiency is high; the second bearing 16 also limits the outlet wire 14 in the outlet groove 21 to prevent the outlet wire 14 from falling out of the outlet groove 21 and getting entangled with the belt seat 4; the second bearing 16 and the first bearing 15 are used at the same time to keep the axis of the motor 1 and the belt seat 4 consistent, thereby improving the rotation synchronization.

[0025] As a specific implementation method of the improvement, refer to Figure 1 As shown, a belt flywheel 42, an adjusting washer 43 and a locking nut 44 are sequentially sleeved on the belt seat 4 along the direction in which the outlet line 14 extends from the inside of the motor 1 to the outside of the motor 1. The belt flywheel 42 is fixed to the belt seat 4 by the locking nut 44, so that the belt flywheel 42 can rotate with the belt seat 4. The adjusting washer 43 is located between the belt flywheel 42 and the locking nut 44. Such a design can prevent the locking nut 44 from rubbing and damaging the surface of the belt flywheel 42 during rotation.

[0026] As a specific implementation method of the improvement, refer to Figure 1 As shown, a spacer sleeve 5 is arranged between the frame piece 3 and the motor 1, and a flat washer 31, an elastic washer 32 and a cap nut 33 are arranged in sequence on the side of the frame piece 3 away from the motor 1. The spacer sleeve 5, the flat washer 31, the elastic washer 32 and the cap nut 33 are all sleeved on the motor shaft 2, and one of the two spacers 5 is limited between the frame piece 3 and the shaft shoulder of the motor shaft 2; the other is limited between the second bearing 16 and the frame piece 3. The function of the spacer sleeve 5 is to facilitate the disassembly and assembly of the frame piece 3, and to facilitate the disassembly and assembly of the parts on the motor shaft 2 by tools such as wrenches. The spacer sleeve 5 at the second bearing 16 makes the inner ring of the second bearing 16 evenly stressed, and the cap nut 33 is used to position the frame piece 3 on the motor shaft 2; the elastic washer 32 is located between the flat washer 31 and the cap nut 33 to prevent the cap nut 33 from loosening; the flat washer 31 prevents the elastic washer 32 from wearing the surface of the frame piece 3.

[0027] As a specific implementation method of the improvement, refer to Figure 1 , Figure 4 and Figure 5 As shown, a wire outlet 51 for the wire 14 to extend out is provided on the spacer sleeve 5 located on one side of the wire outlet 14, and the wire outlet 51 is communicated with the wire outlet groove 21. The spacer sleeve 5 at the second bearing 16 partially blocks the wire outlet groove 21 and limits the wire 14. The wire outlet 51 is used for extending the wire 14 and preventing the wire 14 from contacting with the belt seat 4 and being damaged by wear, thereby protecting the wire 14 and improving the safety and service life of the wire 14.

[0028] As a specific implementation method of the improvement, refer to Figure 1 As shown, a sun gear 6 is sleeved on the motor shaft 2, and the sun gear 6 is fixedly connected to the magnetic steel ring 12. Three planetary gears 61 are arranged around the sun gear 6, and the three planetary gears 61 are all meshed with the sun gear 6. The sun gear 6 and the three planetary gears 61 are all located in the motor 1. Here, the sun gear 6 and the planetary gear 61 are used for coordinated transmission. Compared with ordinary gear transmission, power can be diverted when transmitting power and the input shaft and the output shaft are on the same horizontal line, which is in line with the design of the present invention and optimizes the space utilization in the motor 1.

[0029] As a specific implementation method of the improvement, refer to Figure 1 As shown, a clutch 7 is fixedly mounted on the motor shaft 2. The clutch 7 is located in the motor 1 and connected to the planetary gear 61. The clutch 7 changes the relative motion relationship between the planetary gear 61 and the sun gear 6 to obtain different transmission ratios, thereby controlling the rotation speed of the motor 1 and the speed of the bicycle.

[0030] As a specific implementation method of the improvement, refer to Figure 1 As shown, the motor shaft 2 is also provided with a roller brake flange seat 8, which is fixedly connected to the end face away from the first bearing 15. At the position of the motor shaft 2 where the roller brake flange seat 8 is located, no outlet 14 extends out, that is, no outlet groove 21 is provided. The brake system of the roller brake is highly efficient, fast in response, easy to operate, and has a low failure rate. The roller brake is divided into two categories, one is a cam type and the other is a friction plate type. The cam type, the pull rod is pulled by the pull wire to rotate the cam group, and the six sliders are pushed up. Every two sliders push up a brake block, and the triangular brake blocks act at the same time, and the friction brake is applied to the inside of the brake drum body; the other friction plate type is like the clutch of a motorcycle, and the action is also similar. From the appearance, the friction plate type is with a large heat sink, and the cam type is with a heat sink; the adjustment of the roller brake is basically the same as the traditional brake, and its internal part does not need to be adjusted, and only the wiring stroke needs to be adjusted.

[0031] As a specific implementation method of the improvement, refer to Figure 1As shown, a third bearing 19 is arranged between the roller brake flange seat 8 and the motor shaft 2. The use of the third bearing 19 makes the relative rotation efficiency of the roller brake flange seat 8 and the motor shaft 2 high, reducing the wear of the roller brake flange seat 8 and the motor shaft 2; at the same time, the third bearing 19 also makes the roller brake flange seat 8 and the motor shaft 2 coaxial, improving transmission stability.

[0032] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A motor side hidden wire outlet structure, comprising a motor (1), a motor shaft (2) and two frame plates (3), wherein the motor (1) and the two frame plates (3) are both sleeved on the motor shaft (2), and the two frame plates (3) are located on both sides of the motor (1), an iron core (11) and a magnetic steel ring (12) are arranged in the motor (1), the iron core (11) is sleeved on the motor shaft (2) through a key, the magnetic steel ring (12) is sleeved on the motor shaft (2), a magnetic steel (13) is arranged on the magnetic steel ring (12), and the magnetic steel (13) is arranged corresponding to the circumferential surface of the iron core (11), characterized in that: The motor shaft (2) is provided with a wire outlet groove (21), the iron core (11) is connected with a wire outlet (14), the wire outlet (14) extends from the motor (1) to the outside of the motor (1) through the wire outlet groove (21) and is located between the motor (1) and the frame plate (3); A first bearing (15) is sleeved on the motor shaft (2); the first bearing (15) is located on a side of the iron core (11) away from the magnetic steel ring (12) and sleeved on the wire outlet groove (21) to limit the outlet wire (14); and a bearing hole (17) adapted to the first bearing (15) is provided on the motor (1); The motor shaft (2) is also sleeved with a second bearing (16), the second bearing (16) is located outside the motor (1) and sleeved on the wire outlet groove (21), the outer ring of the second bearing (16) is sleeved with a belt seat (4), the motor (1) is provided with a belt seat hole (18), the belt seat hole (18) is connected with the bearing hole (17), the belt seat (4) extends into the belt seat hole (18) along the length direction of the motor shaft (2), the extended part of the belt seat (4) is separated from the outer surface of the motor shaft (2), the extended part of the belt seat (4) is provided with a belt seat lock nut (41), and the belt seat lock nut (41) is adapted to the belt seat hole (18).

2. The motor side hidden wire outlet structure according to claim 1, characterized in that: The belt seat (4) is provided with a belt flywheel (42), an adjustment washer (43) and a locking nut (44) in sequence along the direction in which the outlet line (14) extends from the inside of the motor (1) to the outside of the motor (1).

3. A motor side hidden wire outlet structure according to claim 1 or 2, characterized in that: A spacer sleeve (5) is arranged between the frame plate (3) and the motor (1); a flat washer (31), an elastic washer (32) and a cap nut (33) are arranged in sequence on the side of the frame plate (3) away from the motor (1); and the spacer sleeve (5), the flat washer (31), the elastic washer (32) and the cap nut (33) are all sleeved on the motor shaft (2).

4. The motor side hidden wire outlet structure according to claim 3, characterized in that: A wire outlet (51) for the wire (14) to extend out is provided on the spacer (5) located on one side of the wire outlet (14), and the wire outlet (51) is communicated with the wire outlet groove (21).

5. A motor side hidden wire outlet structure according to claim 1 or 2, characterized in that: A sun gear (6) is sleeved on the motor shaft (2), the sun gear (6) is fixedly connected to the magnetic steel ring (12), three planetary gears (61) are arranged around the sun gear (6), the three planetary gears (61) are all meshed with the sun gear (6), and the sun gear (6) and the three planetary gears (61) are all located inside the motor (1).

6. The motor side hidden wire outlet structure according to claim 5, characterized in that: A clutch (7) is fixedly sleeved on the motor shaft (2); the clutch (7) is located in the motor (1) and is connected to the planetary gear (61).

7. A motor side hidden wire outlet structure according to claim 1 or 2, characterized in that: A roller brake flange seat (8) is also sleeved on the motor shaft (2), and the roller brake flange seat (8) is fixedly connected to the end surface away from the first bearing (15).

8. The motor side hidden wire outlet structure according to claim 7, characterized in that: A third bearing (19) is arranged between the roller brake flange seat (8) and the motor shaft (2).

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