CN201211839Y

CN201211839Y - Double motor driving device of electric bicycle

Info

Publication number: CN201211839Y
Application number: CNU2008201185787U
Authority: CN
Inventors: 赵正康
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-28
Filing date: 2008-05-28
Publication date: 2009-03-25
Anticipated expiration: 2018-05-28

Abstract

The utility model relates to a dual-motor drive unit for an electric bicycle. The drive unit comprises a low-speed motor, a high-speed motor and a gear box, wherein a pinion, a bull gear and an overrunning clutch are arranged in the gear box, the low-speed motor and the high-speed motor are respectively fixed on the two adjacent lateral surfaces of the gear box, the high-speed motor is fixedly connected with the gear box, a pinion and an overrunning clutch which are arranged on the motor shaft of the high-speed motor are connected with the bull gear. The drive unit adopts dual motors to drive the rear wheel, and utilizes the low-speed motor to take charge of normal driving; the rear wheel is driven after the velocity ratio of the high-speed motor is changed through the gear only during the process of starting or climbing, namely, the rear wheel is driven by the low-speed motor and the high-speed motor, therefore, the output torque of the motor is increased under the precondition of constant current output by the battery, the electric energy is better utilized, and the normal efficiency of the motor is realized.

Description

Electrical Bicycle Dual-motors Driving device

Technical field

The utility model relates to a kind of actuating device of Electrical Bicycle, specifically is meant a kind of Electrical Bicycle Dual-motors Driving device.

Background technology

The actuating device of existing electric motor car with two wheels (Electrical Bicycle) all is by the separate unit motor-driven.Exist staring torque little, the low problem of electrical efficiency during startup, and under power when having climbing, and electrical efficiency is low during climbing causes big current work, and the car load mileages of continuation is shortened, and battery is damaged, and shortens problems such as battery life.

Documents 1, the patent No. are to disclose a kind of battery-driven car Dual-motors Driving device in 200420109276.5 the Chinese patent literature, comprise drive motor, drive wheel, and described drive motor is provided with two, and two drive motor are connected with two drive wheels respectively; The utility model has saved transmission shaft and driving device, driving efficiency height, little, flexible, the good braking effect of vehicle control of loss in efficiency.

Documents 2, the patent No. are to disclose a kind of battery-driven car double-motor frame combination driving device in 200620035903.4 the Chinese patent literature.The utility model comprise frame, drive big motor, drive small machine, differential assembly and with two semiaxis of differential assembly bonded assembly, driving big motor and driving to roll in the small machine rotating shaft and is provided with initiatively high speed tooth and initiatively low speed tooth, two drive motor rotating shafts with one heart and opposite position be provided with the connecting shaft cover; Initiatively the high speed tooth cooperates with differential assembly through driven high speed tooth, and initiatively the low speed tooth cooperates with differential assembly through driven low speed tooth; Sliding in two rotating shafts is provided with the power clutch cover that cooperates with active high speed tooth and active low speed tooth respectively, and two power clutch covers are connected with the fork connecting rod through fork.Though the setting by double-motor in this documents has realized the high, low speed compatibility, but, between high-speed electric expreess locomotive and slowspeed machine, be connected by differential assembly, two semiaxis and power clutch cover, such structure is also remarkable, and, when carrying out the high, low speed conversion, the axle serious wear is just bad easily, so the life-span of its use is not long.

Because the defective of above-mentioned prior art, contriver of the present utility model develops the Dual-motors Driving device that the utlity model has overriding clutch finally by continuous experimental investigation.

Summary of the invention

The purpose of this utility model be to provide a kind of simple in structure, prolong the battery Electrical Bicycle Dual-motors Driving device in service life.

For achieving the above object, the technical solution adopted in the utility model is as follows:

A kind of Electrical Bicycle Dual-motors Driving device, comprise: this actuating device comprises slowspeed machine 26, high-speed electric expreess locomotive 27 and gear case 28, in gear case 28, be provided with miniature gears 13, big gear wheel 25, overriding clutch 14, described slowspeed machine 26 and high-speed electric expreess locomotive 27 are separately fixed at the adjacent two sides of gear case 28, described high-speed electric expreess locomotive 27 is captiveed joint with gear case 28, and the miniature gears 13, the overriding clutch 14 that are arranged on the motor shaft 19 of high-speed electric expreess locomotive 26 are connected with big gear wheel 25; Described slowspeed machine 26 comprises: hub shell 1, low speed magnet steel 2, low speed coil 3, low speed stator 4, first flat key 5, support 6, second flat key 7, low speed bearing 8, center shaft 22, assembling low speed bearing 8, support 6, low speed stator 4, low speed coil 3 in hub shell 1, described low speed bearing 8 is sleeved on the center shaft 22, by second flat key, 7 nested rack 6, on support 6, be nested with low speed stator 4, in low speed stator 4, twine low speed coil 3, be evenly equipped with low speed magnet steel 2 at the inner ring surface of hub shell 1; Assembling hub cap 11 and left end cap 12 on axial two end faces of hub shell 1, hub cap 11 and left end cap 12 are assemblied on the center shaft 22 through low speed bearing 8.

Described Electrical Bicycle Dual-motors Driving device, described slowspeed machine 26 1 ends are provided with electrode outlet line 9, and enclosing of described electrode outlet line 9 is surrounded by sheath 10 outward.

Described Electrical Bicycle Dual-motors Driving device, high-speed electric expreess locomotive 27 comprises: motor shaft 19, high-speed bearing 19 ', high speed rotor 20, high speed magnet steel 21, high speed stator 18, high speed coil 17, motor housing 15, small end lid 16, assembling high speed stator 18 in motor housing 15, high speed coil 17, high speed rotor 20, high speed magnet steel 21, in high speed stator 18, twine high speed coil 17, at the uniform high speed magnet steel 21 of the outer ring surface of high speed rotor 20, suit high-speed bearing 19 ' and high speed rotor 20 on the described motor shaft 19, axial end at motor housing 15 is equipped with small end lid 16, and the other end on-line equipment is in gear case 28 sides.

Described Electrical Bicycle Dual-motors Driving device, gear case 28 comprises: casing 24, miniature gears 13, overriding clutch 14, big gear wheel 25, oil sealing 23, box bearing 23 ', be set with the overriding clutch 14 that places rotation on the motor shaft 19, drives big gear wheel 25 in the described miniature gears 13, casing 24 in the axial side of big gear wheel 25 is fixed on the center shaft 22, opposite side is set on the left end cap 12 through oil sealing 23, box bearing 23 ', and described big gear wheel 25 is set on the left end cap 12.

The use the beneficial effects of the utility model are: this actuating device adopts the Dual-motors Driving trailing wheel, and utilizes slowspeed machine to be responsible for the ability of cruising; Only when starting to walk or run into climbing, increase high-speed electric expreess locomotive and change speed ratio rear drive trailing wheel by gear, promptly drive trailing wheel jointly by slowspeed machine and high-speed electric expreess locomotive, thereby can under battery outgoing current unmodified prerequisite, increase the output torque of motor, make electric energy obtain better utilization, brought into play the normal efficiency of motor.

Description of drawings

Fig. 1 is the schematic perspective view of this actuating device;

Fig. 2 is the assembly drowing of this actuating device.

The specific embodiment

Below by specific embodiment in addition accompanying drawing the utility model is described in detail.

As depicted in figs. 1 and 2, a kind of Electrical Bicycle Dual-motors Driving device, comprise: this actuating device comprises slowspeed machine 26, high-speed electric expreess locomotive 27 and gear case 28, in gear case 28, be provided with miniature gears 13, big gear wheel 25, overriding clutch 14, described slowspeed machine 26 and high-speed electric expreess locomotive 27 are separately fixed at the adjacent two sides of gear case 28, described high-speed electric expreess locomotive 27 is captiveed joint with gear case 28, and the miniature gears 13, the overriding clutch 14 that are arranged on the motor shaft 19 of high-speed electric expreess locomotive 26 are connected with big gear wheel 25; Described slowspeed machine 26 comprises: hub shell 1, low speed magnet steel 2, low speed coil 3, low speed stator 4, first flat key 5, support 6, second flat key 7, low speed bearing 8, center shaft 22, assembling low speed bearing 8, support 6, low speed stator 4, low speed coil 3 in hub shell 1, described low speed bearing 8 is sleeved on the center shaft 22, by second flat key, 7 nested rack 6, on support 6, be nested with low speed stator 4, in low speed stator 4, twine low speed coil 3, be evenly equipped with low speed magnet steel 2 at the inner ring surface of hub shell 1; Assembling hub cap 11 and left end cap 12 on axial two end faces of hub shell 1, hub cap 11 and left end cap 12 are assemblied on the center shaft 22 through low speed bearing 8.

Described Electrical Bicycle Dual-motors Driving device, described slowspeed machine 26 1 ends are provided with electrode outlet line 9, enclosing of described electrode outlet line 9 is surrounded by sheath 10 outward, explanation is around here, end at high-speed electric expreess locomotive 27 also is provided with electrode outlet line, schematic structure omits, and is surrounded by sheath in the periphery of its electrode outlet line, and its electrode outlet line all links to each other with controller on the wiring board.

High-speed electric expreess locomotive 27 comprises: motor shaft 19, high-speed bearing 19 ', high speed rotor 20, high speed magnet steel 21, high speed stator 18, high speed coil 17, motor housing 15, small end lid 16, assembling high speed stator 18 in motor housing 15, high speed coil 17, high speed rotor 20, high speed magnet steel 21, in high speed stator 18, twine high speed coil 17, at the uniform high speed magnet steel 21 of the outer ring surface of high speed rotor 20, suit high-speed bearing 19 ' and high speed rotor 20 on the described motor shaft 19, axial end at motor housing 15 is equipped with small end lid 16, and the other end on-line equipment is in gear case 28 sides.Gear case 28 comprises: casing 24, miniature gears 13, overriding clutch 14, big gear wheel 25, oil sealing 23, box bearing 23 ', be set with the overriding clutch 14 that places rotation on the motor shaft 19, drives big gear wheel 25 in the described miniature gears 13, casing 24 in the axial side of big gear wheel 25 is fixed on the center shaft 22, opposite side is set on the left end cap 12 through oil sealing 23, box bearing 23 ', and described big gear wheel 25 is set on the left end cap 12.

Principle of work is as follows:

Double-motor is worked simultaneously during startup, and after starting, high-speed electric expreess locomotive 26 quits work, slowspeed machine 27 cruisings.When climbing high-speed electric expreess locomotive 26 start auxiliaryly automatically, two motors can be worked under battery provides the situation of same electric current simultaneously, become 85 Ns of rice from original 55 Ns of rice of single motor peak output.

The high-speed electric expreess locomotive 27 of electric motor car with two wheels is captiveed joint with gear case 28, be connected with big gear wheel 25 by miniature gears 13, overriding clutch 14 on the motor shaft 19 simultaneously, make big gear wheel 25 drive outer hub shell 1 rotation on the slowspeed machine 26, and drive motor shaft 19 rotations can not make slowspeed machine 26 work the time, make car load at descending or unclamp to adjust and do not drag high-speed electric expreess locomotive 27 rotations when handle slides forward, thereby can not produce the magnetic induction resistance, strengthen the coasting ability of car load.

Owing on miniature gears, installed an overriding clutch, so can break away from high-speed electric expreess locomotive fully during slowspeed machine work, wherein, can adopt the overriding clutch of model HFL0822 with regard to overriding clutch.Descending or when unclamping speed control crank and sliding does not forward drag the high-speed electric expreess locomotive rotation, strengthens the coasting ability of car load.Thereby can increase mileages of continuation, shorten the big current work time, prolong the service life of battery.

More than to an embodiment of the present utility model be elaborated but described content only for preferred embodiment of the present utility model, can not be considered to be used to limit practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should belong within the patent covering scope of the present utility model.

Claims

1, a kind of Electrical Bicycle Dual-motors Driving device, comprise: this actuating device comprises slowspeed machine (26), high-speed electric expreess locomotive (27) and gear case (28), it is characterized in that: in gear case (28), be provided with miniature gears (13), big gear wheel (25), overriding clutch (14), described slowspeed machine (26) and high-speed electric expreess locomotive (27) are separately fixed at the adjacent two sides of gear case (28), described high-speed electric expreess locomotive (27) is captiveed joint with gear case (28), is arranged on the miniature gears (13) on the motor shaft (19) of high-speed electric expreess locomotive (26), overriding clutch (14) is connected with big gear wheel (25); Described slowspeed machine (26) comprising: hub shell (1), low speed magnet steel (2), low speed coil (3), low speed stator (4), first flat key (5), support (6), second flat key (7), low speed bearing (8), center shaft (22), assembling low speed bearing (8) in hub shell (1), support (6), low speed stator (4), low speed coil (3), described low speed bearing (8) is sleeved on the center shaft (22), by second flat key (7) nested rack (6), on support (6), be nested with low speed stator (4), in low speed stator (4), twine low speed coil (3), be evenly equipped with low speed magnet steel (2) at the inner ring surface of hub shell (1); Assemble hub cap (11) and left end cap (12) on axial two end faces of hub shell (1), hub cap (11) and left end cap (12) are assemblied on the center shaft (22) through low speed bearing (8).

2, Electrical Bicycle Dual-motors Driving device according to claim 1 is characterized in that: described slowspeed machine (26) one ends are provided with electrode outlet line (9), and enclosing of described electrode outlet line (9) is surrounded by sheath (10) outward.

3, Electrical Bicycle Dual-motors Driving device according to claim 1, it is characterized in that: high-speed electric expreess locomotive (27) comprising: motor shaft (19), high-speed bearing (19 '), high speed rotor (20), high speed magnet steel (21), high speed stator (18), high speed coil (17), motor housing (15), little end cap (16), assembling high speed stator (18) in motor housing (15), high speed coil (17), high speed rotor (20), high speed magnet steel (21), in high speed stator (18), twine high speed coil (17), at the uniform high speed magnet steel of the outer ring surface of high speed rotor (20) (21), described motor shaft (19) is gone up suit high-speed bearing (19 ') and high speed rotor (20), axial end at motor housing (15) is equipped with little end cap (16), and the other end on-line equipment is in gear case (28) side.

4, Electrical Bicycle Dual-motors Driving device according to claim 1, it is characterized in that: gear case (28) comprising: casing (24), miniature gears (13), overriding clutch (14), big gear wheel (25), oil sealing (23), box bearing (23 '), be set with in the described miniature gears (13) and place motor shaft (19) to go up rotation, drive the overriding clutch (14) of big gear wheel (25), casing (24) in the axial side of big gear wheel (25) is fixed on the center shaft (22), opposite side is through oil sealing (23), box bearing (23 ') is set on the left end cap (12), and described big gear wheel (25) is set on the left end cap (12).