CN2234906Y

CN2234906Y - Drive unit for electric bicycle

Info

Publication number: CN2234906Y
Application number: CN95215282U
Authority: CN
Inventors: 曾鼎煌
Original assignee: MEILIDA INDUSTRY Co Ltd
Current assignee: MEILIDA INDUSTRY Co Ltd
Priority date: 1995-06-20
Filing date: 1995-06-20
Publication date: 1996-09-11
Anticipated expiration: 2005-06-20

Abstract

The utility model relates to a drive unit for an electric bicycle, comprising a motor, a worm, a worm gear meshed with the worm, a driving shaft, a crank shaft, a sprocket disc and bearings, wherein, the core shaft of the motor is fixedly sheathed with the worm; the driving shaft whose inner part is assembled with the crank shaft is assembled below the worm and the outer part is assembled with the sprocket disc; one end of the drive shaft opposite to the sprocket disc is sheathed with one bearing, the middle section of the driving shaft is sheathed with a one-way bearing to be sheathed on the worm on the periphery thereof, and one end of the driving shaft is penetrated and tightened for the sprocket disc; the crank shaft is penetrated and contacted with two one-way bearings between the periphery surface of the middle section of the crank shaft and the inner surface of the driving shaft, and is sheathed with one bearing between the periphery surface contrary to the sprocket disc and a containing chamber; a crank is vertically locked to both ends of the crank shaft.

Description

The actuating device of Electrical Bicycle

The utility model is about a kind of bicycle driving device, a kind of actuating device of Electrical Bicycle particularly, mainly be to be located at the bicycle Chain stay, to manage the Vidacare corp of junction down, worm mesh one worm gear of motor wherein, worm gear and in-to-in transmission shaft spacing sleeve unilateral bearing, and can driven by power, transmission shaft and in-to-in crank shaft spacer unilateral bearing can be trampled driving by manpower separately, and therefore can manpower, the electric power parallel drive is used and more laborsaving; The guard shield of each end of transmission shaft and crank shaft and Vidacare corp is established bearing at interval, and bicycle can be retreated; Reach simultaneously that structure is simplified, economic benefit such as lightweight, cost are low.

Bicycle in the vehicle is very general in the use, it is light and have the function of Sport ﹠ Casual concurrently, be still the trend that does not move back in the world, and the bicycle development is very extensive, except mountain-climbing type, sport car type, cross-country type, Electrical Bicycle in order to make bicycle have the speed that comparatively fast drives and more laborsaving, more to develop; The Electrical Bicycle kind is a lot, installs battery box and motor additional such as the following pipe place at bicycle, and the axle of motor is arranged with gear and drives with the gear matched cingulum that picks out with middle right overhead and advance; Or at the affixed motor of baggage rack one side, the gear mesh that its axle is connect establish is in the cooresponding flank of tooth of tire side face, and can make the wheel driven in rotation.

This kind Electrical Bicycle, on durability and practicality, all have shortcoming, the Electrical Bicycle that on market, has occurred at present different kenels, as novel patent the 227 five-four-three in Taiwan number " with the bicycle of electrical motor ", it is to be arranged side by side manpower driving system and electric system, corresponding with the variation of manpower legpower, the bicycle with electrical motor of the output of control electrical drive system, this structure constitutes by electronic control package, such as by free-wheel clutch, legpower testing agency, speed of a motor vehicle testing agency etc.; There are the following problems for this Electrical Bicycle:

1. the free-wheel clutch of this Electrical Bicycle and every legpower testing agency precision requirement are higher, and wherein critical elements causes the cost height by external import, and whole Electrical Bicycle cost is high.

2. the area under this Electrical Bicycle, its electrical motor almost occupy between pipe and the five-way pipe, overall weight is big, and it is heavy that the user tramples application of force burden.

9. each element is difficult for by the electronics package maintenance, the circuit arrangement complexity, and poor durability, assembling is complicated.

4. Electrical Bicycle does not often have the car body fallback function in the past, only can folk prescription to travelling, make troubles to the rider.

Main purpose of the present utility model is to provide a kind of actuating device that can multiple type of drive bicycle driven, Vidacare corp is located at the bicycle Chain stay, down manages the junction, its separately driven by power, separately manpower is trampled multiple type of drive such as driving and manpower, electric power parallel drive, and can keep the stretcher of standard bicycle freely to retreat needs.

Of the present utility modelly take following technical scheme:

The actuating device of Electrical Bicycle of the present utility model is located under the bicycle between pipe and the Chain stay, set firmly a tubular guard shield between following pipe and Chain stay, guard shield one end interlocking one motor, motor abut in down the pipe below, one battery box of feed motor electric power is installed in down above the pipe, it is characterized in that:

It also comprises a worm screw, one and worm gear, the transmission shaft of a quill shaft shape, a crank shaft, a chain fluted disc and a bearing of described worm mesh;

The inner room that forms relatively of described guard shield is to assemble above-mentioned each element, the solid described worm screw of axle cover of described motor, locate below the worm screw relatively in the room, group is established described transmission shaft, transmission shaft is inner to be worn, outsidely supplies described chain fluted disc group to establish for described crank shaft easy fit ground group, and transmission shaft is at the sheathed bearing of relative chain fluted disc one end of room, and the stage casing wears a unilateral bearing, to be set in described worm gear in its periphery, transmission shaft passes described guard shield one end and wears packing for described chain fluted disc;

Described crank shaft places two unilateral bearings that recline between stage casing outer peripheral face and transmission shaft inner face, crank shaft differs from a sheathed bearing between chain fluted disc one end side face and room, and crank vertically is locked in described crank shaft two ends, and a protecting cover locking closure is in the opening part of described guard shield.

The actuating device of described Electrical Bicycle, its feature also is: the described relatively worm gear of described transmission shaft both sides respectively wear one and give cramping location by sheet, and described relatively bearing and establish a cramp by running through pad between sheet is embedded in the default groove of transmission shaft it.

The actuating device of described Electrical Bicycle, its feature also is: the bearing adjacent that described crank shaft differs from described chain fluted disc is nested in described room wall with two cramps location.

The actuating device of described Electrical Bicycle, its feature also is: described transmission shaft passes described guard shield one end preparation for the winding of described chain fluted disc, and this traversing through end projection is than the retaining edge in great circle footpath, and retaining edge outer end side face car system left-hand thread face is so that the described chain fluted disc of packing.

The actuating device of described Electrical Bicycle, its feature also is: described crank shaft passes an end of described guard shield and described transmission shaft socket spacing sleeve one circular rings in order to leakproof.

The utlity model has following effect:

(1) the utility model can be selected electric power, manpower is independent or the occupation mode of parallel drive, not only laborsaving because of Vidacare corp, and have slim and graceful movement effects concurrently, all can save the pedal force of rider simultaneously in contrary wind, climbing state because of the driving of motorized motions dress.

(2) the utility model is located at coaxial because of Vidacare corp and traditional crank 53, crank shaft 40 sum totals, not only therefore save reduction element manufacturing cost, do not need precision electronic element, do not need clutch designs and cost-cutting, easier assembling, element are simplified more, reduce the transferring power loss between transmission, therefore easy-maintaining, durability and multinomial characteristics such as practicality is good, lightweight and space are little are far beyond the industrial value height of commonly using Electrical Bicycle.

Further specify specific structural features of the present utility model and purpose below in conjunction with drawings and Examples.

Brief Description Of Drawings:

Fig. 1 is that the utility model is assembled in the unitary side planar view on the bicycle.

Fig. 2 is that the utility model is assembled in the local upper viewing view on the bicycle.

Fig. 3 is Vidacare corp of the present utility model and chain fluted disc assembling top view.

Fig. 4 is a Vidacare corp front assembled view of the present utility model.

Fig. 5 is Vidacare corp of the present utility model and chain fluted disc assembling layered front portion cutaway view.

Fig. 6 is a partly cutaway view of Vidacare corp side-looking of the present utility model.

As shown in Figures 1 to 4, the utility model be under manage 60 and Chain stay 61 delivery positions between be provided with Vidacare corp A, its be under manage 60 and 61 of Chain stays set firmly a tubular guard shield 12, guard shield 12 1 end interlocking motors 10, pipe 60 belows so that motor 10 bodies recline down mutually, the battery box 101 of feed motor 10 electric power is installed in down above the pipe 60, and Vidacare corp A assembles mutually with the crank shaft 40 that links crank 53, so that manpower, electric power all can use respectively, perhaps manpower and electric power parallel drive drive.

Extremely shown in Figure 6 as Fig. 4, the guard shield 12 inner rooms 121 that form relatively of Vidacare corp A are to assemble each element, it is the solid worm screw 11 of axle cover by motor 10, worm screw 11 is provided with position rotating between two parties at guard shield 12 inner fitted bearings, and place, relative worm screw 11 belows in the room 121, promptly relatively establish transmission shaft 30 into a quill shaft shape by an end group, transmission shaft 30 is inner to be worn, outsidely establishes for 50 groups for the chain fluted disc for 40 groups of crank shafts; Wherein, transmission shaft 30 is at the sheathed bearing 33 of room 121 relative chain fluted disc 50 1 ends, the stage casing then wears a unilateral bearing 21 earlier, unilateral bearing 21,31 inner faces are the roller Boulez and set and design with unidirectional rotation, because of it does not intend describing in detail for the conventional construction event, wear a worm gear 20 with engages worm 11 in unilateral bearing 21 peripheries, transmission shaft 30 relative worm gears 20 both sides respectively wear one and lean on sheet 22 to give the cramping location; Relative bearing 331 and run through pad by 22 of sheets and establish a cramp 23, it is embedded in transmission shaft 30 pregroove, again, transmission shaft 30 passes the preparation of guard shield 12 1 ends for 50 windings of chain fluted disc, so the traversing through end projection is than the retaining edge 32 in great circle footpath, retaining edge 32 outer end side face car system left-hand thread faces 321 are with packing chain fluted disc 50;

And transmission shaft 30 inner groups for axis body shape crank shaft 40 easy fit ground are worn, only crank shaft 40 places two unilateral bearings 31 that recline between stage casing outer peripheral face and transmission shaft 30 inner faces, crank shaft 40 relative bearings 33 and at the prominent thick block that gives of meat of establishing of periphery, crank shaft 40 1 ends encircle 41 in order to leakproof with transmission shaft 30 socket spacing sleeves one O shape; Crank shaft 40 differ from chain fluted disc 50 1 ends and room 121 be separated by between a sheathed bearing 331, adjacent bearing 331 is nested in room 121 wall thickness, two cramps 25 are located in order to clipping;

Therefore after crank shaft 40, transmission shaft 30, worm gear 20 all have been assembled in the room 121, it is terminal and give by being attached to and keep off edge 32 chain fluted disc 50 to be set in transmission shaft 30 again, to cooperate hexagonal shape lock nut 52 along left-hand thread face 321 screw lock packing chain fluted discs 50, and crank 53 vertically is locked in crank shaft 40 two ends, secondly, the opening part of a protecting cover 13 locking closure guard shields 12 is promptly finished assembling again.

Occupation mode of the present utility model can cooperate Fig. 1, Fig. 5 clearly to find out:

1. when fully by motor 10 driven by power, even motor 10 drives worm screws 11 with 20 rotations of engagement worm gear, wherein unilateral bearing 21 is contained in worm gear 20 inner faces and to be located at the unidirectional gyratory directions in crank shaft 40 outsides opposite with unilateral bearing 31; Therefore worm gear 20 drive transmission shafts 30 advance with chain fluted disc 50 rotation driving bicycles, and this moment, the unilateral bearing 31 of crank shaft 40 was unidirectional idle running, so user's the action that drives is moved with electric power Ma Qu fully.

When 2. desire keeps bicycle primary characteristic that manpower tramples or loss of power, then trample crank 53 so that crank shaft 40 cooperates unilateral bearings 31 not to be idling conditions, and then drive

transmission shaft

30,50 rotations of chain fluted disc, reach the selection needs that manpower is trampled.

4. moreover, if need electric power, manpower is parallel uses, promptly be power-assisted mode and trample synchronously and exert oneself with the driven by power, then trample crank 53 and make crank shaft 40, transmission shaft 30, cooperate the worm screw 11 of motor 10 to drive worm gears 20 rotations, cause and trample the effect that drives; This kind electric power, the manpower result of use that can walk abreast, not only because of Vidacare corp A auxiliary and laborsaving outside, and have slim and graceful movement effects concurrently, simultaneously against the wind, climbing state all can save output because of the driving of Vidacare corp A and trample manpower.

If 5. trample crank 53 so that bicycle body advances, retreats (being that chain fluted disc direction is a conter clockwise) easily, then form the idle running effect because of unilateral bearing 21,31 unidirectional designs, crank shaft 40, transmission shaft 30 are just with the ball bearing of main shaft character of bearing 33,331, make transmission shaft 30 along bearing 33,331 inner faces and driving chain fluted disc 50 promoting bicycle freely, this be general electronic voluntarily not too late.

Claims

The actuating device of 1 one kinds of Electrical Bicycles is located at down between pipe and the Chain stay, sets firmly a tubular guard shield between following pipe and Chain stay, guard shield one end interlocking one motor, motor abuts in down the pipe below, and a battery box of feed motor electric power is installed in down above the pipe, it is characterized in that:

It also comprises a worm screw, one and worm gear, the transmission shaft of a quill shaft shape, a crank shaft, a chain fluted disc and a bearing of described worm mesh;

The inner room that forms relatively of described guard shield is to assemble above-mentioned each element, the solid described worm screw of axle cover of described motor, locate below the worm screw relatively in the room, group is established described transmission shaft, transmission shaft is inner to be worn, outsidely supplies described chain fluted disc group to establish for described crank shaft easy fit ground group, and transmission shaft is at the sheathed bearing of relative chain fluted disc one end of room, and the stage casing wears a unilateral bearing, to be set in described worm gear in its periphery, transmission shaft passes described guard shield one end and wears packing for described chain fluted disc;

Described crank shaft places two unilateral bearings that recline between stage casing outer peripheral face and transmission shaft inner face, crank shaft differs from a sheathed bearing between chain fluted disc one end side face and room, and crank vertically is locked in described crank shaft two ends, and a protecting cover locking closure is in the opening part of described guard shield.
The actuating device of 2 Electrical Bicycles according to claim 1, it is characterized in that: the described relatively worm gear of described transmission shaft both sides respectively wear one and give cramping location by sheet, described relatively bearing and establish a cramp by running through pad between sheet is embedded in the default groove of transmission shaft it.
The actuating device of 3 Electrical Bicycles according to claim 1 is characterized in that: the bearing adjacent that described crank shaft differs from described chain fluted disc is nested in described room wall with two cramps location.
The actuating device of 4 Electrical Bicycles according to claim 1, it is characterized in that: described transmission shaft passes described guard shield one end preparation for the winding of described chain fluted disc, this traversing through end projection is than the retaining edge in great circle footpath, and retaining edge outer end side face car system left-hand thread face is so that the described chain fluted disc of packing.
5 actuating devices according to claim 1 or 4 described Electrical Bicycles is characterized in that: described crank shaft passes an end of described guard shield and described transmission shaft socket spacing sleeve one circular rings in order to leakproof.