CN2529789Y

CN2529789Y - Midship power gear of electric bicycle

Info

Publication number: CN2529789Y
Application number: CN 01274181
Authority: CN
Inventors: 胡济荣
Original assignee: XINGYUE GROUP CO Ltd ZHEJIANG
Current assignee: XINGYUE GROUP CO Ltd ZHEJIANG
Priority date: 2001-12-13
Filing date: 2001-12-13
Publication date: 2003-01-08
Anticipated expiration: 2011-12-13

Abstract

The utility model discloses a central power device for an electric bicycle, comprising a motor (10), a driving device, a center shaft (16), and a chain output plate (4). A left crank (20) and a right crank (20) are fixed on both ends of the center shaft (16) respectively; the motor (10) is arranged on the front side of a box body (11), the upper part of the motor (10) is hinged with the box body (11), and the lower part of the motor (10) is fixedly connected with an adjusting bracket (7) via a push rod (13); a small chain wheel (18) on the output shaft of the motor (10) is connected with a big chain wheel (17) on the driving device via a chain (19); the driving device includes the box body (11), an input shaft (2), a pinion gear (21), a bull gear (15) and a rotating jacket (3); the pinion gear (21) on the input shaft (1) meshes the bull gear (15) on the center shaft (16), and a driving pawl (6) on the bull gear (15) cooperates with a driven pawl (6') on the center shaft (16); and the chain output plate (4) is fixed on the rotating jacket (3). With the structure, the utility model improves the assembly of the motor into an external mounting pattern from the original inserting pattern, and has the advantages of simple and reasonable structure, low mounting precision, easy processing, adjustable tightness, convenient repair, long service life and low cost.

Description

Electrical Bicycle middle engine installation

One, technical field

The utility model relates to a kind of engine installation of Electrical Bicycle, and particularly a kind of power is arranged on the middle engine installation at Electrical Bicycle middle part.

Two, background technology

Existing Electrical Bicycle can be divided into forward type, middle and rear-mounted three kinds according to power configuration.From present domestic present situation, forward type and rear-mounted because the installation site is difficult to resolve certainly, the front and back wheel load-bearing is inhomogeneous, center of gravity is high, the car load outward appearance can't be coordinated and progressively be eliminated by market.And the middle Electrical Bicycle has only a kind of structure, and that is exactly that plug-in type is adopted in the motor assembling, promptly adorns the screw bevel gear engagement of a double helix bevel gear and driving device input shaft on the motor output shaft; Because screw bevel gear processing technology complexity, gear mesh location, setting accuracy height, wearing and tearing or damage the back and repair difficulty, from and restricted the development of middle Electrical Bicycle.

Three, summary of the invention

For overcoming the disadvantage of above-mentioned existence, problem to be solved in the utility model just provide a kind of simple and reasonable, setting accuracy is low, handling ease, degree of tightness Electrical Bicycle middle engine installation adjustable, easy to maintenance.The technical solution adopted in the utility model comprises motor, driving device, axis, chain output panel, axis is arranged on the driving device, left and right sides crank throw is fixed on the two ends of axis, motor is arranged on the front of casing, its top is hinged by bearing pin and casing, the bottom is by captiveing joint with the adjusting support on being fixed on casing with its pivotally attached push rod, and the minor sprocket that is fixed on the motor output shaft is connected with hinge wheel on being arranged on the driving device input shaft by chain.Driving device comprises casing, input shaft, miniature gears, big gear wheel, turning set, input shaft is movably arranged on the casing, miniature gears is fixed on the input shaft, big gear wheel is arranged on the axis by bearing, miniature gears is meshed with big gear wheel, and big gear wheel is provided with main ratchet, and axis is provided with the ratchet inner ring, the ratchet inner ring is provided with from ratchet, main ratchet and cooperate with turning set from ratchet; Chain output panel is fixed on the turning set; The casing both sides are respectively equipped with housing plate; The back of casing is fixed with the control capsule support.After adopting said structure, the motor fit changes external mode into by inserted mode and assembles, and the chain degree of tightness can be adjusted transmission speed ratio easily conveniently by the push rod adjustment.Have simple and reasonable, setting accuracy is low, handling ease, degree of tightness is adjustable, easy to maintenance, long service life, low cost and other advantages.

Four, description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is that Fig. 1 K is to view.

Five, the specific embodiment

Fig. 1, shown in Figure 2, specific embodiments for the utility model Electrical Bicycle middle engine installation, it comprises motor 10, driving device, axis 16, chain output panel 4, axis 16 is arranged on the driving device, left and right sides crank throw 20 is fixed on the two ends of axis 16, motor 10 is arranged on the front of casing 11, its top is hinged by bearing pin 9 and casing 11, the bottom is by captiveing joint with the adjusting support 7 on being fixed on casing 11 with its pivotally attached push rod 13, the minor sprocket 18 that is fixed on the motor output shaft is connected with hinge wheel 17 on being arranged on driving device input shaft 1 by chain 19, chain 19 degrees of tightness can be regulated by adjustment nut 28 easily, certainly, chain 19 also can be alternative with bringing synchronously.Driving device comprises casing 11, input shaft 2, miniature gears 21, big gear wheel 15, turning set 3, input shaft 1 is movably arranged on the casing 11, miniature gears 21 is fixed on the input shaft 1, miniature gears 21 and input shaft 1 also can be realized with gear wheel shaft, big gear wheel 15 is arranged on the axis 16 by bearing 27, miniature gears 21 is meshed with big gear wheel 15, big gear wheel 15 is provided with main ratchet 6, axis 16 is provided with ratchet inner ring 5, ratchet inner ring 5 be provided with from ratchet 6 ', main ratchet 6 and from ratchet 6 ' cooperate with turning set 3.Turning set 3 cylindricals are provided with rolling bearing 22, and rolling bearing 22 is fixed on the casing 11, is provided with circlip for shaft 23 on turning set 3, and chain output panel 4 is fixed on the turning set 3.On the axis 16 between big gear wheel 15 and the casing 11, be provided with spacer 14.Input shaft 1 one sides are fixing by the bearing 25 that is fixed on the casing 11, opposite side is connected with axle sleeve 2 or bearing on being arranged on casing 11, one side of axis 16 is fixing by the bearing 26 that is fixed on the casing 11, and opposite side is connected with the bearing 24 that is fixed on turning set 3.Casing 11 both sides are respectively equipped with housing plate 8.The back of casing 11 is fixed with control capsule support 12, can make things convenient for the installation of Electric Bicycle Driver.

Principle of work of the present utility model is as follows: drive input shaft 1 by chain 19 and rotate after motor 10 work, miniature gears 21 on the input shaft 1 drives big gear wheel 15 and rotates by the bearing 27 that is located on the axis 16, on the big gear wheel 15 main ratchet 6 drive turning set 3 rotation again, the chain output panel 4 that is fixed on the turning set 3 also and then rotates, drive the flywheel rotation of Electrical Bicycle by driving chain, thereby make the Electrical Bicycle operation.This kind state is a motor-operated running state, and at this moment, axis 16 does not rotate.

When with foot-operated moving, motor 10 is not worked, input shaft 1 and miniature gears 21, big gear wheel 15 do not turn round, axis 16 rotations this moment, on the axis 16 from ratchet 6 ' under the drive of axis 16, rotate, from ratchet 6 ' driving turning set 3 again rotates, and in like manner drives the flywheel rotation of Electrical Bicycle, thereby make the Electrical Bicycle operation.When going up a slope,, also can give the Electrical Bicycle power-assisted with foot-operated crank throw 20 simultaneously in order to solve the battery-driven car under power.

Claims

1, a kind of Electrical Bicycle middle engine installation, comprise motor (10), driving device, axis (16), chain output panel (4), axis (16) is arranged on the driving device, left and right sides crank throw (20) is fixed on the two ends of axis (16), it is characterized in that: described motor (10) is arranged on the front of casing (11), its top is hinged by bearing pin (9) and casing (11), the bottom is by captiveing joint with the adjusting support (7) on being fixed on casing (11) with its pivotally attached push rod (13), and the minor sprocket (18) that is fixed on the motor output shaft is connected with hinge wheel (17) on being arranged on driving device input shaft (1) by chain (19).

2, Electrical Bicycle middle engine installation according to claim 1, it is characterized in that: described driving device comprises casing (11), input shaft (2), miniature gears (21), big gear wheel (15), turning set (3), input shaft (1) is movably arranged on the casing (11), miniature gears (21) is fixed on the input shaft (1), big gear wheel (15) is arranged on the axis (16) by bearing (27), miniature gears (21) is meshed with big gear wheel (15), big gear wheel (15) is provided with main ratchet (6), axis (16) is provided with ratchet inner ring (5), ratchet inner ring (5) is provided with from ratchet (6 '), main ratchet (6) and cooperate with turning set (3) from ratchet (6 ').

3, Electrical Bicycle middle engine installation according to claim 2, it is characterized in that: described turning set (3) cylindrical is provided with rolling bearing (22), rolling bearing (22) is fixed on the casing (11), and chain output panel (4) is fixed on the turning set (3).

4, Electrical Bicycle middle engine installation according to claim 2 is characterized in that: be provided with spacer (14) on the axis (16) between big gear wheel (15) and the casing (11).

5, Electrical Bicycle middle engine installation according to claim 2, it is characterized in that: described input shaft (1) one side is fixing by the bearing (25) that is fixed on the casing (11), opposite side is connected with axle sleeve (2) on being arranged on casing (11), axis (16) one sides are fixing by the bearing (26) that is fixed on the casing (11), and opposite side is connected with the bearing that is fixed on turning set (3) (24).

6, Electrical Bicycle middle engine installation according to claim 1 and 2 is characterized in that: described casing (11) both sides are respectively equipped with housing plate (8).

7, Electrical Bicycle middle engine installation according to claim 6, it is characterized in that: the back of described casing (11) is fixed with control capsule support (12).