CN202481245U - Signal acquisition device of electric bicycle - Google Patents
Signal acquisition device of electric bicycle Download PDFInfo
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- CN202481245U CN202481245U CN2011205606768U CN201120560676U CN202481245U CN 202481245 U CN202481245 U CN 202481245U CN 2011205606768 U CN2011205606768 U CN 2011205606768U CN 201120560676 U CN201120560676 U CN 201120560676U CN 202481245 U CN202481245 U CN 202481245U
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- electrical bicycle
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- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000001141 propulsive effect Effects 0.000 claims description 9
- 230000004323 axial length Effects 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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Abstract
A signal acquisition device of an electric bicycle comprises a central shaft, a bottom bracket, and a unidirectional overrunning clutch. The signal acquisition device of the electric bicycle is characterized by further comprising a sensor which is capable of collecting signals outputted by the trample force by confirming the amount of man-powered trample force in order to accurately control a motor to generate driving force in proportion. The signal acquisition device of the electric bicycle is capable of confirming the amount of man-powered trample force through the sensor and collecting signals outputted by the trample force in order to accurately control a motor to generate driving force in proportion. Meanwhile, the signal acquisition device of the electric bicycle is low in cost and simple in process.
Description
Technical field
The utility model relates to a kind of signal pickup assembly, relates in particular to a kind of signal pickup assembly of Electrical Bicycle.
Background technology
Along with the development in domestic Electrical Bicycle market, the ratio force aid system more and more receives the favor of customer and producer.The principle of work of the power-assisted sensor-based system of current trend is to be converted into voltage signal with the foot-operated power that a torque sensor scrunches manpower to send sensor to; The power that is complementary is exported in controller analysis relatively back indication motor, and the key position of this force aid system is a torque sensor.Common ratio force aid system mainly contains following several kinds of forms:
China to export the Electrical Bicycle assistant sensor in American-European market all be switching mode basically, former handle cancellation, at middle shaft part packing one Hall element and magnet steel disk; Reaching the certain speed motor just begins to start; Start the all-electric control in back, though this type of assistant sensor price is lower, technology is simple; But its power-assisted ratio inaccuracy is ridden and is felt also relatively poor.
2. the principle of Japanese torque sensor is the spring in the foot-operated back compressing of the manpower middle motor; Produce deformation, the amplitude with deformation converts the moment size to again, and is carved with groove in the outer of motor; The angle of changeing very little just responds; Very sensitive, but this covering device is higher to material, the technological requirement of part, and cost is higher.
3. Tsing-Hua University exports the torque sensor of Japan in early days, and it is equipped with sleeve and decentralizing device in the axis five-way, the foot-operated eccentric moment that promptly produces of manpower.This covering device cost is lower, and processing is simple, but precision control is difficult, will revise it in the software.
The utility model content
The purpose of the utility model provides and a kind ofly can produce propulsive effort in proportion by the accuracy control motor, and cheap, the signal pickup assembly of the simple Electrical Bicycle of technology, and concrete technical scheme is following:
A kind of signal pickup assembly of Electrical Bicycle; Comprise axis, five-way, mono-directional overrun clutch; It is characterized in that, also comprise and to come the accuracy control motor to produce the sensor of propulsive effort in proportion through confirming the signal that manpower pedal force size and then collection pedal force are exported.
Said sensor can be coil-induced axis torque sensor.
Preferably, said coil-induced axis torque sensor comprises coil, induction coil, moving bracing ring, decides bracing ring, active skewback and driven skewback;
Said coil stationary is on said five-way; Said moving bracing ring is movably connected on the said axis through ball spline mechanism, and an end of said moving bracing ring is installed with said induction coil, and the other end is installed with said active skewback; Saidly decide bracing ring one end and be fixedly connected on the said five-way, the other end is fixedly connected on the medial surface of said mono-directional overrun clutch; Said driven skewback is fixedly installed in saidly to be decided on the bracing ring, and said active skewback is resisted against on the said driven skewback, and its contact surface is provided with helical structure;
The rotation of said axis drives said active skewback rotation and output longitudinal travel, and then drives said driven skewback and under the effect of said helical structure and said ball spline mechanism, produce longitudinal travel, and then drives said induction coil near said coil.
Preferably, saidly decide bracing ring and be provided with first baffle plate, said moving bracing ring is captiveed joint through second baffle with said induction coil, is provided with elastomeric element between said first baffle plate and the said second baffle.
Preferably, said elastomeric element is a spring.
Preferably; The medial surface of said moving bracing ring is provided with one or more first keyways; Be relatively set with second keyway with said first keyway on the lateral surface of said axis; The axial length of said first keyway is less than the axial length of said second keyway; And the contacted part of said first keyway and said second keyway constitutes the cylindricality keyway, and activity is placed with one or more steel balls in the said cylindricality keyway, the said ball spline mechanism of the common formation of said first keyway, second keyway and steel ball.
Preferably, the axial cross section of said first keyway and second keyway is semicircle, and said cylindricality keyway is a cylindrical key groove.
Preferably, the said second keyway axial cross section is semicircle, and what the said first keyway axial cross section was pairing central angle less than 180 ° is arc, and the axial two ends of said first keyway are respectively arranged with the 3rd baffle plate.
Preferably; Go back the compartment of terrain on the said five-way medial surface and be installed with Zuo Gai and You Gai; Said coil is between said Zuo Gai and right lid, and said axis is installed in a left side through clutch shaft bearing and covers, and said right lid is decided the bracing ring lateral surface and linked to each other with said through second bearing; The lateral surface of said mono-directional overrun clutch links to each other with the chain wheel of Electrical Bicycle.
Preferably, said induction coil is a permanent magnet.
A kind of coil-induced axis torque sensor of Electrical Bicycle comprises axis, five-way, mono-directional overrun clutch, it is characterized in that, also comprises coil, induction coil, moving bracing ring, decides bracing ring, active skewback and driven skewback;
Said coil stationary is on said five-way; Said moving bracing ring is movably connected on the said axis through ball spline mechanism, and an end of said moving bracing ring is installed with said induction coil, and the other end is installed with said active skewback; Saidly decide bracing ring one end and be fixedly connected on the said five-way, the other end is fixedly connected on the medial surface of said mono-directional overrun clutch; Said driven skewback is fixedly installed in saidly to be decided on the bracing ring, and said active skewback is resisted against on the said driven skewback, and its contact surface is provided with helical structure;
The rotation of said axis drives said active skewback rotation and output longitudinal travel, and then drives said driven skewback and under the effect of said helical structure and said ball spline mechanism, produce longitudinal travel, and then drives said induction coil near said coil.
Preferably, saidly decide bracing ring and be provided with first baffle plate, said moving bracing ring is captiveed joint through second baffle with said induction coil, is provided with elastomeric element between said first baffle plate and the said second baffle.Preferably, said elastomeric element is a spring.
Preferably; The medial surface of said moving bracing ring is provided with one or more first keyways; Be relatively set with second keyway with said first keyway on the lateral surface of said axis; The axial length of said first keyway is less than the axial length of said second keyway; And the contacted part of said first keyway and said second keyway constitutes the cylindricality keyway, and activity is placed with one or more steel balls in the said cylindricality keyway, the said ball spline mechanism of the common formation of said first keyway, second keyway and steel ball.
Preferably, the axial cross section of said first keyway and second keyway is semicircle, and said cylindricality keyway is a cylindrical key groove.
Preferably, the said second keyway axial cross section is semicircle, and what the said first keyway axial cross section was pairing central angle less than 180 ° is arc, and the axial two ends of said first keyway are respectively arranged with the 3rd baffle plate.
Preferably; Go back the compartment of terrain on the said five-way medial surface and be installed with Zuo Gai and You Gai; Said coil is between said Zuo Gai and right lid, and said axis is installed in a left side through clutch shaft bearing and covers, and said right lid is decided the bracing ring lateral surface and linked to each other with said through second bearing; The lateral surface of said mono-directional overrun clutch links to each other with the chain wheel of Electrical Bicycle.
Preferably, said induction coil is a permanent magnet.
The signal pickup assembly of the Electrical Bicycle of the utility model can confirm that the signal that manpower pedal force size and then collection pedal force are exported comes the accuracy control motor to produce propulsive effort in proportion through sensor, and this device is cheap, and technology is simple.
Description of drawings
Fig. 1 is the structural representation of axis torque sensor of the Electrical Bicycle of the utility model.
Fig. 2 is the signal condition figure of axis torque sensor of the Electrical Bicycle of the utility model.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
A kind of signal pickup assembly of Electrical Bicycle; Comprise axis 1, five-way 7, mono-directional overrun clutch 11, and can come the accuracy control motor to produce the sensor of propulsive effort in proportion through confirming the signal that manpower pedal force size and then collection pedal force are exported.
Present embodiment adopts coil-induced axis torque sensor, certainly, also can adopt sensors such as linear Hall position transduser that those skilled in the art use always, pressure sensor, position transduser, opto-electronic pickup.
As illustrated in fig. 1 and 2 is the signal pickup assembly that comprises the Electrical Bicycle of coil-induced axis torque sensor, and it comprises axis 1, five-way 7, mono-directional overrun clutch 11 and coil-induced axis torque sensor, wherein,
Coil-induced axis torque sensor comprises coil 6, induction coil 5, moving bracing ring 17, decides bracing ring 15, active skewback 14 and driven skewback 13;
Coil 6 is fixed on the five-way 7; Moving bracing ring 17 is movably connected on the axis 1 through ball spline mechanism, and moving bracing ring 17 one of which ends are installed with induction coil 5, and the other end is installed with initiatively skewback 14; Decide bracing ring 15 1 ends and be fixedly connected on the five-way 7, the other end is fixedly connected on the medial surface of mono-directional overrun clutch 11; Driven skewback 13 is fixedly installed in to be decided on the bracing ring 15, and initiatively skewback 14 is resisted against on the driven skewback 13, and its contact surface is provided with helical structure;
The signal pickup assembly of the Electrical Bicycle of the utility model in use, and is as shown in Figure 1, eyes left from the right side of axis 1, and establishing clockwise direction is forward, and just the manpower driving direction is a positive dirction.When the manpower cw is stepped on stretcher, the axis 1 of captive joint rotates with it, initiatively also and then rotation of skewback 14; Cause the contact surface generation slide relative of active skewback 14 and driven skewback 13, under the effect of helical structure, add the effect of ball spline mechanism; Initiatively skewback 14 had both rotated motion with respect to driven skewback 13; Longitudinal travel takes place again, causes moving bracing ring 17 to produce radial and axial moving, according to contact surface design-calculated hand of spiral between active skewback 14 and the driven skewback 13; This moment, moving bracing ring 17 relative axis 1 moved axially to the right, and induction coil moves to coil direction.
By on can know that as long as a certain moment cw steps on bicycle pedal, propulsive effort is delivered to axis 1; The torsion of axis 1 is delivered to initiatively skewback 14, behind the tension force that overcomes elastic construction 4 through the effect of ball spline mechanism; The spiral contact surface generation slide relative of active skewback 14 and driven skewback 13; Pass to torsion on the driven skewback 13 on the one hand, through overriding clutch 11 output manpowers, moving on the other hand bracing ring 17 relative axis 1 move right; Driven induction coil 5 and got into coil 6 to the right, be directly proportional with manpower cw pedal force so induction coil 5 moves right.
For clearer elaboration the utility model; Suppose that manpower driving this moment remains unchanged; So initiatively the spiral contact surface of skewback 14 and driven skewback 13 is static after slide relative, directly transmits the given bracing ring 15 of torsion, again through mono-directional overrun clutch 11 output manpowers.It is also static after this moment, moving bracing ring 17 relative axis 1 slided.That is to say, when manpower drives, moving bracing ring 17, induction coil 5, initiatively skewback 14, driven skewback 13, decide the relative five-way 7 of parts such as bracing ring 15 and the coil 6 that is fixedly mounted on the five-way is high speed revolutions; Though induction coil 5 is with respect to coil 6 high speed revolutions; But this moment induction coil 5 to get into the depth of coils 6 be that pedal force with the people is directly proportional, shown in Fig. 2 (a), it is very shallow that induction coil 5 gets into the position of coils 6; At this moment; People's pedal force is less, the signal of changes of magnetic field very a little less than, the power-assisted that needs is bigger; Shown in Fig. 2 (b), induction coil 5 parts get into coil 6, and at this moment, people's pedal force is moderate, and the signal of changes of magnetic field is moderate, and the power-assisted that needs is moderate; Shown in Fig. 2 (c), induction coil 5 all gets into coil 6, and at this moment, people's pedal force is little, and the signal of changes of magnetic field is strong, and the power-assisted that needs is big.Therefore, the signal of measuring the changes of magnetic field that is caused by the depth variation of induction coil 5 entering coils 6 just can produce propulsive effort by accurate end control motor in proportion, orders about Electrical Bicycle jointly to move ahead, thereby has realized power-assisted purpose.
In order to make when the manpower driving stops; Induction coil 5 returns to original position more easily; As shown in Figure 1, the coil-induced axis torque sensor of the Electrical Bicycle of the utility model is decided bracing ring 15 and is provided with first baffle plate 18, and moving bracing ring 17 is captiveed joint through second baffle 21 with induction coil 5; Be provided with elastomeric element 4 between first baffle plate 18 and the second baffle 21, preferred spring.
The signal pickup assembly of the Electrical Bicycle of the utility model in use, under the situation of nobody's power effect, elastomeric element 4 is in the raw.When the manpower cw is stepped on stretcher, according to contact surface design-calculated hand of spiral between active skewback 14 and the driven skewback 13, this moment, moving bracing ring 17 overcame the tension force of elastic construction 4, and axis 1 moves axially to the right relatively, and induction coil moves to coil direction.When manpower fails, return to state of nature at elastomeric element 4, and then the moving bracing ring of promotion can return to original position better.
As a kind of preferred version; As shown in Figure 1; The medial surface of moving bracing ring 17 is provided with one or more first keyways 19, is relatively set with the axial length of the axial length of second keyway, 20, the first keyways 19 less than second keyway 20 with first keyway 19 on the lateral surface of axis 1; And first keyway 19 and second keyway, 20 contacted parts constitute the cylindricality keyway; Activity is placed with one or more steel balls 16 in the cylindricality keyway, and steel ball preferably is several rows of row, and first keyway 19, second keyway 20 and steel ball 16 be common to constitute ball spline mechanisms.
As a kind of preferred version, as shown in Figure 1, the axial cross section of first keyway 19 and second keyway 20 is semicircle, and the cylindricality keyway is a cylindrical key groove.
As a kind of preferred version, as shown in Figure 1, second keyway, 20 axial cross sections are semicircle, and what first keyway, 19 axial cross sections were pairing central angle less than 180 ° is arc, and the axial two ends of first keyway 19 are respectively arranged with the 3rd baffle plate 22.
As a kind of preferred version; As shown in Figure 1, on five-way 7 medial surfaces also the compartment of terrain be installed with left side lid 3 and right lid 8, coil 6 is between left side lid 3 and right lid 8; Axis 1 is installed on the left side lid 3 through clutch shaft bearing 2; Right lid 8 through second bearing 9 with decide bracing ring 15 lateral surfaces and link to each other, decide bracing ring 15 and be positioned at the lateral surface that covers an end of 8 away from left side lid 3 and the right side and be installed on the medial surface of mono-directional overrun clutch 11, the lateral surface of mono-directional overrun clutch 11 links to each other with the chain wheel of Electrical Bicycle 10.
As a kind of preferred version, induction coil 5 is a permanent magnet.
As above; The signal pickup assembly of the Electrical Bicycle that comprises coil-induced axis torque sensor of the utility model drives initiatively skewback 14 rotation and output longitudinal travels through axis 1 rotation, and then drives driven skewback 13 and under the effect of helical structure and ball spline mechanism, produce longitudinal travel; (longitudinal travel does not take place in driven skewback; Initiatively skewback produces longitudinal travel with respect to driven skewback, and because of the reason of contact surface helical structure, rotatablely moving has produced longitudinal travel.This longitudinal travel and pedal force are directly proportional; Measuring this longitudinal travel this programme is the mode that adopts induction coil 5 and coil 6; Can also use other displacement signal measurement ways; As long as it is all right to detect the longitudinal travel of moving bracing ring, such as through linear Hall position transduser or other forms of pressure sensor, position transduser, opto-electronic pickup etc., but must by move bracing ring, decide bracing ring, parts such as active skewback and driven skewback, spring could produce longitudinal travel.) and then drive induction coil 5 near coil 6, and then, can be through measuring the propulsive effort that the signal of the changes of magnetic field that variation caused that induction coil 5 gets into the position of coils 6 comes the accuracy control motor to produce in proportion, and this device is cheap, and technology is simple.
In sum; The signal pickup assembly of the Electrical Bicycle of the utility model can confirm that the signal that manpower pedal force size and then collection pedal force are exported comes the accuracy control motor to produce propulsive effort in proportion through sensor; And this device is cheap, and technology is simple.
Though the utility model discloses as above with preferred embodiment; Right its is not in order to limit the utility model; Any person of ordinary skill in the field; In spirit that does not break away from the utility model and scope, when can doing a little change and improvement, so the protection domain of the utility model is as the criterion when looking the claim person of defining.
Claims (10)
1. the signal pickup assembly of an Electrical Bicycle; Comprise axis, five-way, mono-directional overrun clutch; It is characterized in that, also comprise and to come the accuracy control motor to produce the sensor of propulsive effort in proportion through confirming the signal that manpower pedal force size and then collection pedal force are exported.
2. the signal pickup assembly of Electrical Bicycle according to claim 1 is characterized in that, said sensor is coil-induced axis torque sensor.
3. the signal pickup assembly of Electrical Bicycle according to claim 2 is characterized in that, said coil-induced axis torque sensor comprises coil, induction coil, moving bracing ring, decides bracing ring, active skewback and driven skewback, wherein,
Said coil stationary is on said five-way; Said moving bracing ring is movably connected on the said axis through ball spline mechanism, and an end of said moving bracing ring is installed with said induction coil, and the other end is installed with said active skewback; Saidly decide bracing ring one end and be fixedly connected on the said five-way, the other end is fixedly connected on the medial surface of said mono-directional overrun clutch; Said driven skewback is fixedly installed in saidly to be decided on the bracing ring, and said active skewback is resisted against on the said driven skewback, and its contact surface is provided with helical structure;
The rotation of said axis drives said active skewback rotation and output longitudinal travel, and then drives said driven skewback and under the effect of said helical structure and said ball spline mechanism, produce longitudinal travel, and then drives said induction coil near said coil.
4. the signal pickup assembly of Electrical Bicycle according to claim 3; It is characterized in that; Saidly decide bracing ring and be provided with first baffle plate, said moving bracing ring is captiveed joint through second baffle with said induction coil, is provided with elastomeric element between said first baffle plate and the said second baffle.
5. the signal pickup assembly of Electrical Bicycle according to claim 4 is characterized in that, said elastomeric element is a spring.
6. according to the signal pickup assembly of claim 3 or 4 or 5 described Electrical Bicycles; It is characterized in that; The medial surface of said moving bracing ring is provided with one or more first keyways; Be relatively set with second keyway with said first keyway on the lateral surface of said axis, the axial length of said first keyway is less than the axial length of said second keyway, and said first keyway and the contacted part formation of said second keyway cylindricality keyway; Activity is placed with one or more steel balls in the said cylindricality keyway, the said ball spline mechanism of the common formation of said first keyway, second keyway and steel ball.
7. the signal pickup assembly of Electrical Bicycle according to claim 6 is characterized in that, the axial cross section of said first keyway and second keyway is semicircle, and said cylindricality keyway is a cylindrical key groove.
8. the signal pickup assembly of Electrical Bicycle according to claim 6; It is characterized in that; The said second keyway axial cross section is semicircle; What the said first keyway axial cross section was pairing central angle less than 180 ° is arc, and the axial two ends of said first keyway are respectively arranged with the 3rd baffle plate.
9. the signal pickup assembly of Electrical Bicycle according to claim 6; It is characterized in that; Go back the compartment of terrain on the said five-way medial surface and be installed with Zuo Gai and You Gai; Said coil is between said Zuo Gai and right lid, and said axis is installed in a left side through clutch shaft bearing and covers, and said right lid is decided the bracing ring lateral surface and linked to each other with said through second bearing; The lateral surface of said mono-directional overrun clutch links to each other with the chain wheel of Electrical Bicycle.
10. the signal pickup assembly of Electrical Bicycle according to claim 3 is characterized in that, said induction coil is a permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205606768U CN202481245U (en) | 2011-12-29 | 2011-12-29 | Signal acquisition device of electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205606768U CN202481245U (en) | 2011-12-29 | 2011-12-29 | Signal acquisition device of electric bicycle |
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| Publication Number | Publication Date |
|---|---|
| CN202481245U true CN202481245U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205606768U Withdrawn - After Issue CN202481245U (en) | 2011-12-29 | 2011-12-29 | Signal acquisition device of electric bicycle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514678A (en) * | 2011-12-29 | 2012-06-27 | 苏州博菲利电动科技有限公司 | Signal acquisition device for electric bicycle |
-
2011
- 2011-12-29 CN CN2011205606768U patent/CN202481245U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514678A (en) * | 2011-12-29 | 2012-06-27 | 苏州博菲利电动科技有限公司 | Signal acquisition device for electric bicycle |
| CN102514678B (en) * | 2011-12-29 | 2013-06-19 | 苏州博菲利电动科技有限公司 | Signal acquisition device for electric bicycle |
| WO2013097283A1 (en) * | 2011-12-29 | 2013-07-04 | 苏州博菲利电动科技有限公司 | Signal-collecting apparatus for electric bicycle |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20121010 Effective date of abandoning: 20130619 |
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| RGAV | Abandon patent right to avoid regrant |