CN2352436Y - Force-aid mechanism for electric pedal bicycle - Google Patents
Force-aid mechanism for electric pedal bicycle Download PDFInfo
- Publication number
- CN2352436Y CN2352436Y CN 98207531 CN98207531U CN2352436Y CN 2352436 Y CN2352436 Y CN 2352436Y CN 98207531 CN98207531 CN 98207531 CN 98207531 U CN98207531 U CN 98207531U CN 2352436 Y CN2352436 Y CN 2352436Y
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- CN
- China
- Prior art keywords
- control circuit
- driving control
- rocking arm
- motor driving
- bicycle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a force-aid mechanism for an electric pedal bicycle, comprising a base fixed on a bicycle support frame, a side cover, a supporting seat fixed on the base, a motor driving control circuit fixed on the support seat, a spring and a rocker arm, which are combined with the support seat, and an idler screwed with the rocker arm, and the circumference of the idler is engaged with the lower part of a chain. When the utility model is installed, the chain is supported by the idler, when a rider steps painstakingly on pedals, the tension of the chain gets bigger, the vertical downward component force worked on the idler is bigger than the torque force of the spring, which make the rocker arm rotate, magnets arranged on the rocker arm approach hall elements to generate the output voltage which goes through the amplification and comparison processes to drive the motor, and the rider and the motor jointly operate the electric bicycle.
Description
The utility model relates to a kind of bicycle auxiliary, relates to a kind of power-assist mechanism of electric bicycle or rather.
Along with the reinforcement of environmental protection consciousness, the walking-replacing tool of various fuel oils is replaced with electricity gradually and drives, as replacing motor bike with electric bicycle.Electric bicycle also can be ridden instead of walk except the function that motion is arranged, but existing electric bicycle, the speed of its revolution is fully by rotating handles control, the acceleration handle of similar self-propelled vehicle.In some advanced country, as Japan, German, use electric bicycle as using self-propelled vehicle, equally to examine driver's license, be about to electric bicycle and handle as self-propelled vehicle, this has just run counter to the original intention of using electric bicycle for sport and body-building.
The purpose of this utility model is the power-assist mechanism of a kind of electric bicycle of design, both can make bicycle keep original function of riding instead of walk, can CD-ROM drive motor work form the operating state that motor and people pull together to drive so that auxiliary power to be provided when pedal arduously again.
The purpose of this utility model is achieved in that the power-assist mechanism of electric bicycle, is arranged on the support of bicycle, it is characterized in that: comprise base, bearing, motor driving control circuit plate, rocking arm and idle pulley; Described base is fixed on the support of bicycle, described bearing is fixed on the base, and described motor driving control circuit plate is fixed on the bearing, and described rocking arm combines with bearing, described idle pulley is combined on the rocking arm, the chain below engagement of idle pulley periphery and bicycle; Described rocking arm is provided with magnet, and described motor driving control circuit plate is provided with Hall element, and Hall element is electrically connected with motor driving control circuit, and the motor driving control circuit mouth is electrically connected with motor.
Described motor driving control circuit is linked in sequence by signal amplification circuit and signal comparator circuit and constitutes, and the input end of signal amplification circuit connects described Hall component output, and the mouth of signal comparator circuit connects described motor.
Also include protection switch, protection switch one end is connected with the mouth of described motor driving control circuit, and the protection switch other end connects ground terminal.
Described protection switch has two, is separately positioned in the left and right sides brake crank of bicycle.
Described bearing is provided with axle, is nested with and is fixed with spring on the axle, and an end of described rocking arm is nested with and is positioned on the axle, and the other end of described rocking arm and described idle pulley are spirally connected by bolt, also are provided with backing block in magnet side on the described rocking arm.
Also include side cover, solid with described base combination and relative spiral shell in the support both sides of described bicycle, be coated with rubber washer on the support.
Whether the utility model is abandoned the rotating handles of original electric bicycle, come the sensing rider at pedal arduously (as in starting or when going up a slope) by power-assist mechanism is set, and comes timely CD-ROM drive motor that power-assisted is provided.When the situation of exerting oneself when rider disappeared, motor rotary speed can reduce again automatically, reaches the design goal that people and motor are pulled together jointly.When power-assist mechanism is installed, make idle pulley prop up chain, making originally, the chain of level forms the lower state in middle higher two ends.When rider during at pedal arduously, it is big that the tension force of chain becomes, and the component vertically downward that acts on the idle pulley becomes big, makes the rocking arm rotation when greater than the torsion of spring, and the backing block on rocking arm withstands bearing, is the critical spot that not influenced by external force.When rocking arm rotates, magnet on it is near the Hall element on the bearing circuit card, and the Hall element that input end is connected with current source produces the voltage that is inversely proportional to the magnet spacing, again amplifying circuit and comparator circuit and export a driving voltage on circuit card, CD-ROM drive motor is shared the application of force of rider.The protection switch that is arranged in the brake crank is connected with the output of motor driving control circuit, and can avoid does not have rotating speed when static at motor, is not having under the brake force start state of counter electromotive force, burns actuator or motor owing to starting current is too big.
Further specify technology of the present utility model below in conjunction with embodiment and accompanying drawing
Fig. 1 is the three-dimensional decomposition texture scheme drawing of the power-assist mechanism of electric bicycle
Fig. 2 is the power-assist mechanism unitized construction scheme drawing of electric bicycle
Fig. 3 is that the position of each assembly of the stressed back of idle pulley among Fig. 2 concerns scheme drawing
Fig. 4 is that the position of the stressed leading portion assembly of idle pulley among Fig. 2 concerns scheme drawing
Fig. 5 is that the position of the stressed trailing portion assembly of idle pulley among Fig. 2 concerns scheme drawing
Fig. 6 is the installation site scheme drawing of the power-assist mechanism protection switch of electric bicycle
Fig. 7 is the motor driving control circuit figure of power-assist mechanism of electric bicycle
Fig. 8 is the motor driving control circuit figure of power-assist mechanism of electric bicycle
Referring to Fig. 1, Fig. 2, the power-assist mechanism of electric bicycle mainly comprises idle pulley 2, rocking arm 3, bearing 9, spring 6, motor driving control circuit plate 7, base 10 and side cover 14.
Rocking arm 3 one ends combine with idle pulley 2 by bolt 1, and idle pulley periphery and the engagement of chain 16 belows can make idle pulley 2 with the preceding of chain 16 and then rotation.Spring 6 is nested with on the axle 91 of bearing 9, and an end of spring 6 is fixed on the bearing 9, and the other end then passes aperture 31 on the rocking arm 3.Several circles of inhour rotation and make backing block 32 on the rocking arm 3 can insert in the groove 92 of bearing 9 till, the direction with axle 91 on the bearing pushes again, buckles in the groove 911 on spools 91 with C type clasp 5 and pad 4 at last, finishes combining of rocking arm 3 and 9 of bearings.Then motor driving control circuit plate 7 is locked in the groove 92 of bearing 9 with bolt 8.Bolt 11 is used for bearing 9 is fixed in base 10, and rubber washer 12 is coated on the support 13 of bicycle, and bolt 15 combines side cover 14 and is fixed in support 13 both sides that are coated with rubber washer with base 10.Rocking arm 3 is provided with magnet 19, and motor driving control circuit plate 7 is provided with Hall element 18.
Power-assist mechanism application example shown in Fig. 2 after the combination, what should be specifically noted that is: need to adjust the installation site of power-assist mechanism on bicycle support 13, make idle pulley 2 can slightly rise chain 16, as shown in FIG..When making the pulling force of chain 16 become big when the effort pedal, chain 16 will be tending towards level this moment, and the downward component of being experienced when idle pulley 2 can be oppressed rocking arm 3 and do the anticlockwise rotation during greater than the torsion of spring 6, make magnet 19 near Hall element 18, as shown in Figure 3.When treating that backing block 32 on the rocking arm 3 withstands bearing 9, be its critical spot that not influenced by external force.
Referring to Fig. 4 and Fig. 5, the contrast illustrate idle pulley 2 stressed before and stressed after relative position.Hall element 18 is along with magnet 19 is close gradually, because the input end of Hall element is connected to current source, when vertical its positive magnetic flux density became big, it is big that its output voltage becomes thereupon.This signal send motor driving control circuit to handle, at this signal voltage greater than 20 percent o'clock of full output voltage (voltage is too little to make the running efficiency lower with regard to CD-ROM drive motor), circuit is output one driving voltage in good time, helps rider a helping hand with the CD-ROM drive motor rotation.
Referring to Fig. 6, the structural representation when two protection switches 22 are installed in the brake crank 23 shown in the figure.Can cut off the electricity supply automatically during brake, do not burnt with protection actuator or motor.Because the driving voltage size of motor depends on the size of idle pulley 2 downward component fully, if but rider catches brake that bicycle can't be advanced on the one hand, pedal firmly again on the other hand, make motor driving voltage be in the state of full output, do not have Yin Mada rotating speed and do not have counter electromotive force this moment, the immediate current of motor of flowing through is very big, easily burns motor.The utility model is provided with protection switch in brake crank, switch is connected with motor driving control circuit, cuts off motor power during brake automatically, takes place to avoid above-mentioned situation.
Referring to Fig. 7, Fig. 8, be two enforcement circuit diagrams of motor driving control circuit.Circuit comprises three parts, Hall element 18, signal amplification circuit 24 and signal comparator circuit 25.The output voltage of Hall element 18 through signal amplification circuit 24 amplify and signal comparator circuit relatively after, export through protection switch 22.
The power-assist mechanism of electric bicycle of the present utility model is by being provided with the tension force size that idle pulley and rocking arm come the sensing chain; and then change the relative position of 18 of magnet 19 and Hall elements; export a driving voltage CD-ROM drive motor power-assist by contactless sensing, and make electric bicycle become safe riding instead of walk and fitness tool by protection switch 22 is set.
Claims (6)
1. the power-assist mechanism of electric bicycle is arranged on the support of bicycle, it is characterized in that: comprise base, bearing, motor driving control circuit plate, rocking arm and idle pulley; Described base is fixed on the support of bicycle, described bearing is fixed on the base, and described motor driving control circuit plate is fixed on the bearing, and described rocking arm combines with bearing, described idle pulley is combined on the rocking arm, the chain below engagement of idle pulley periphery and bicycle; Described rocking arm is provided with magnet, and described motor driving control circuit plate is provided with Hall element, and Hall element is electrically connected with motor driving control circuit, and the motor driving control circuit mouth is electrically connected with motor.
2. the power-assist mechanism of electric bicycle according to claim 1, it is characterized in that: described motor driving control circuit is linked in sequence by signal amplification circuit and signal comparator circuit and constitutes, the input end of signal amplification circuit connects described Hall component output, and the mouth of signal comparator circuit connects described motor.
3. the power-assist mechanism of electric bicycle according to claim 1, it is characterized in that: also include protection switch, protection switch one end is connected with the mouth of described motor driving control circuit, and the protection switch other end connects ground terminal.
4. the power-assist mechanism of electric bicycle according to claim 1, it is characterized in that: described protection switch has two, is separately positioned in the left and right sides brake crank of bicycle.
5. the power-assist mechanism of electric bicycle according to claim 1, it is characterized in that: described bearing is provided with axle, be nested with and be fixed with spring on the axle, one end of described rocking arm is nested with and is positioned on the axle, the other end of described rocking arm and described idle pulley are spirally connected by bolt, also are provided with backing block in magnet side on the described rocking arm.
6. the power-assist mechanism of electric bicycle according to claim 1 is characterized in that: also include side cover, consolidate in the support both sides of described bicycle with described base combination and relative spiral shell, be coated with rubber washer on the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98207531 CN2352436Y (en) | 1998-07-23 | 1998-07-23 | Force-aid mechanism for electric pedal bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98207531 CN2352436Y (en) | 1998-07-23 | 1998-07-23 | Force-aid mechanism for electric pedal bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2352436Y true CN2352436Y (en) | 1999-12-08 |
Family
ID=33963435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98207531 Expired - Fee Related CN2352436Y (en) | 1998-07-23 | 1998-07-23 | Force-aid mechanism for electric pedal bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2352436Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441475C (en) * | 2004-11-10 | 2008-12-10 | 株式会社岛野 | Bicycle electrical component and chain kicking device using the same electrical component for bicycle |
-
1998
- 1998-07-23 CN CN 98207531 patent/CN2352436Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441475C (en) * | 2004-11-10 | 2008-12-10 | 株式会社岛野 | Bicycle electrical component and chain kicking device using the same electrical component for bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |