CN101367422B - Torque sensing device of electric cycle - Google Patents
Torque sensing device of electric cycle Download PDFInfo
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- CN101367422B CN101367422B CN2007100757562A CN200710075756A CN101367422B CN 101367422 B CN101367422 B CN 101367422B CN 2007100757562 A CN2007100757562 A CN 2007100757562A CN 200710075756 A CN200710075756 A CN 200710075756A CN 101367422 B CN101367422 B CN 101367422B
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- driving link
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Abstract
The invention relates to a torque sensor for an electrically-assisted vehicle, which comprises a driving part for introducing power, a torque output part arranged on an outer lane of the driving part, a driven part driven by the driving part through a connecting part, and a displacement sensor arranged in an inner lane of the driven part, wherein a moving clearance is reserved between the driven part and the driving part; an elastic part is arranged between the driven part and the driving part; the circumference of the torque output part is provided with a radial plug jack; the outer circumference of the driven part is provided with a guide spiral groove; a cross shaft is inserted in the plug jack and the guide spiral groove; and one section of the cross shaft is connected with the guide spiral groove through a bearing, while the other section of the cross shaft is arranged in the radial plug jack. The torque output part is provided with the plug jack, meanwhile, the bearing is arranged between the cross shaft and the guide spiral groove, so as to reduce the friction between the cross shaft and the guide spiral groove, thereby greatly reducing the axial motion-resistance force, making the radial motion effectively transform to axial displacement, improving detection accuracy and reducing abrasion.
Description
Technical field
The present invention relates to torque sensor, more particularly, relate to a kind of moment sensor that can be used for Moped Scooter.
Background technology
Ripe gradually along with battery technology, the world is to the pay attention to day by day of environmental demands, Moped Scooter (on the level land based on manpower, in the hillside fields even load occasion assistive drive that the increases electric power) first-selection that becomes the environmental protection vehicle gradually.
In order to realize detecting condition of loading is arranged, needing increases the change that moment sensor detects rider's the power that scrunches, and need to judge whether the auxiliary of electric power.There is following defective in present torque sensor: the radial motion of sprocket crank can only change displacement radially into, signal output is arranged if desired, must wheel could detect after two circles, and the signal of output not LINEAR CONTINUOUS, have the problem of signal output shutoff hysteresis.
For this reason, Chinese patent discloses a kind of Electrical Bicycle moment sensor for No. 200520100522.5, by movable cooperation of one group of inclined shaft, inclined shaft hole of relative set between driven member and the moment output, change radial motion into longitudinal travel, and, control whether start electronic assisting by acquisition of signal spare collection output voltage signal.Yet there is following defective at least in the moment sensor of this structure: 1, when driving link rotates the rotation of drive driven member, owing to radial motion need be changed into longitudinal travel, make the very big friction of existence between inclined shaft and the inclined shaft hole, in process of the test, can not reset even scrunch power disappearance driven member after stuck situation about can't rotate often taking place or turning to a certain position.2, the friction that exists between inclined shaft and the inclined shaft hole causes very big wearing and tearing, makes that the cooperation between inclined shaft and the inclined shaft hole was lost efficacy.3,, make that the moment output tends to produce swing, and have influence on the accuracy of detection because the rider scrunches the inhomogeneous of power.4, owing to be to cooperate interlock between driving link and the driven member by bearing pin, and also there is axial relative displacement between driving link and the driven member, make and have bigger sliding resistance between the pin shaft hole of bearing pin and driven member, be unfavorable for the axial relative motion of driving link and driven member, influence accuracy in detection.
Summary of the invention
The technical problem to be solved in the present invention is, the defective at the above-mentioned moment sensor of prior art provides a kind of torque sensing device of electric cycle that can effectively reduce the friction force between skewed slot and the inclined shaft.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of torque sensing device of electric cycle, comprise the driving link of introducing power, the moment output that is arranged on described driving link outer ring, drive driven member that rotates and the displacement sensing structure that is arranged on described driven member inner ring by described driving link by connecting piece; Be provided with mobile space between described driven member and the described driving link; Between described driven member and driving link, be provided with and promote the elastic component that described driven member resets; Offer radially jack on the circumference of described moment output; Offer the guiding plug helix on the excircle of described driven member; Described jack and guiding are inserted with transverse axis in the plug helix, and a section of described transverse axis joins by bearing and described guiding plug helix, and another of described transverse axis section insertion is installed in the described radially jack.
In torque sensing device of electric cycle of the present invention, described guiding plug helix is 45 degree plug helixs.
In torque sensing device of electric cycle of the present invention, be provided with the banking stop at the connection location place that is positioned at both between described moment output and the driving link.
In torque sensing device of electric cycle of the present invention, the connecting piece of described driving link and driven member is a bearing pin;
Described driving link offers the axial pin axis hole, and described driven member offers the ladder mating holes that cooperates with described pin shaft hole, and described bearing pin is a tight fit in the pin shaft hole of described driving link and is slidingly fitted in the mating holes of driven member.
In torque sensing device of electric cycle of the present invention, described elastic component is a spring; Offer the ladder accommodation hole that holds described spring on described driving link and the driven member.
In torque sensing device of electric cycle of the present invention, the magnet steel of the inner ring that described displacement sensing structure comprises the signal spare that is fastened on described driven member inner ring, be installed in described signal spare and the induction pieces that is arranged on described signal spare inboard; Described induction pieces is provided with displacement sensor with respect to the position of described magnet steel;
Described signal spare is relative static on the rotation direction of described driven member with described induction pieces, described driven member and described signal spare relatively rotate, and described signal spare axially moves under described driven member drives, and responds to the displacement of described magnet steel, carry out bit shifting signal by described induction pieces.
In torque sensing device of electric cycle of the present invention, described induction pieces is a Hall spare; Described displacement sensor is the hall sensor that is installed on the Hall spare; Also be provided with two spline jacks that insert for the spline sheet on the described Hall spare, described spline sheet inserts described spline jack and limits described Hall spare rotation, also is provided with the cable jack that cable is installed on the described Hall spare.
In torque sensing device of electric cycle of the present invention, described signal spare outer wall is provided with fin, and the inwall of described driven member is provided with the groove that described fin matches, and described fin and groove fit make described signal spare follow described driven member and axially move.
In torque sensing device of electric cycle of the present invention, described boosted vehicle moment sensor also is provided with the connecting element that is sleeved on the described moment output, and described connecting element is located described Hall spare.
In torque sensing device of electric cycle of the present invention, described bearing is an oil-containing sliding bearing.
Implement torque sensing device of electric cycle of the present invention, has following beneficial effect: by on the moment output, offering radially jack, and adopt 45 to spend the guiding plug helixs. the bearing of between transverse axis and guiding plug helix, packing into simultaneously, reduce the friction force between transverse axis and the guiding plug helix, thereby make the axial motion resistance of driven member reduce greatly, make radial motion to convert longitudinal travel effectively to, improved accuracy in detection, reduced wearing and tearing.In addition, the rigidity banking stop is installed, has been avoided the axial wobble of moment output, improved accuracy in detection by the outside at driving link.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the cross-sectional schematic of torque sensing device of electric cycle of the present invention;
Fig. 2 is the front schematic view of the driving link of torque sensing device of electric cycle of the present invention;
Fig. 3 is the cross-sectional schematic according to the A-A hatching of Fig. 2;
Fig. 4 is the front schematic view of the moment output of torque sensing device of electric cycle of the present invention;
Fig. 5 is the cross-sectional schematic according to the B-B hatching of Fig. 4;
Fig. 6 is the front schematic view of the driven member of torque sensing device of electric cycle of the present invention;
Fig. 7 is the cross-sectional schematic according to the C-C hatching of Fig. 6;
Fig. 8 is that the A of Fig. 6 is to scheme drawing;
Fig. 9 is the cross-sectional schematic according to the D-D hatching of Fig. 8;
Figure 10 is the front schematic view of the Hall spare of torque sensing device of electric cycle of the present invention;
Figure 11 is the cross-sectional schematic according to the E-E hatching of Figure 10;
Figure 12 is the front schematic view of the signal spare of torque sensing device of electric cycle of the present invention;
Figure 13 is that the B of Figure 12 is to scheme drawing;
Figure 14 is the cross-sectional schematic according to the F-F hatching of Figure 12;
Figure 15 is the front schematic view of the banking stop of torque sensing device of electric cycle of the present invention;
Figure 16 is the cross-sectional schematic according to the G-G hatching of Figure 15.
The specific embodiment
As shown in Figure 1, in torque sensing device of electric cycle first embodiment of the present invention, it comprises the driving link 11 of introducing power, the moment output 12 that is arranged on driving link 11 outer rings, drives driven member 13 that rotates and the displacement sensing structure that is arranged on driven member 13 inner rings by driving link 11 by connecting piece 16.Be provided with mobile space 14 between driven member 13 and the driving link 11; Between driven member 13 and driving link 11, be provided with and promote the elastic component that driven member 13 resets.In the present embodiment, connecting piece 16 is a bearing pin, and elastic component is a spring 15, and understandable, connecting piece 16 and elastic component also can be other member, as long as can finish the function of connection and elastic reset.
As Fig. 2, shown in Figure 3, driving link 11 comprises columniform main body.Offer flower-shaped connecting bore 111 in the centre of main body, be connected, and drive driving link 11 rotations by crank 91 with the crank 91 of boosted vehicle.On the circumference of main body, be laid with pin shaft hole 112 and ladder accommodation hole 113.This pin shaft hole 112 is used for the supply and marketing axle and inserts, and ladder accommodation hole 113 is used to take in elastic component.Understandable, pin shaft hole 112 and ladder accommodation hole 113 can be made a stepped hole, and elastic component is set in the periphery of bearing pin, and reduce the perforate processing of driving link 11.
As Fig. 4, shown in Figure 5, moment output 12 comprises columned hollow body, and this hollow body is set in the periphery of driving link 11, and is connected with chain sheet 92, with the power transfer chain sheet 92 of driving link 11 input, and then drives whole boosted vehicle and starts.In order to be connected with chain sheet 92, be provided with outward extending engaging lug 121 in the outside, end of hollow body, on engaging lug 121, offer connecting bore 122, pass connecting bore 122 by rivet, and moment output 12 is captiveed joint with chain sheet 92.Understandable, chain sheet 92 also can be selected other existing connection modes for use with the connection mode of moment output 12.On the circumference of this hollow body, offer radially jack 123, be used for inserting coupling torque output 12 and driven member 13 for transverse axis 17.Radially the quantity of jack 123 can be adjusted according to actual needs.
To shown in Figure 9, in the middle of comprising, driven member 13 is provided with the cylinder body of through hole 131 as Fig. 6.Further offer groove 132 at through hole 131, be used for cooperating, detailed aftermentioned with signal spare 19.On cylinder body, offer the ladder mating holes 133 that cooperates with pin shaft hole 112, and the ladder accommodation hole 134 that is used to take in spring 15.Understandable, the quantity of pin shaft hole 112, ladder mating holes 133 and ladder accommodation hole 134 can be provided with as required.By bearing pin is inserted in pin shaft hole 112 and the mating holes, make driven member 13 under the drive of driving link 11, to rotate synchronously.And the spring 15 of in ladder accommodation hole 134,113, packing into, make driven member 13 and driving link 11 relatively move, after the compression spring 15, under the effect of the elastic restoring force of spring 15, promote driven member 13 away from driving link 11, keep the gap 14 between driven member 13 and the driving link 11.
In the present embodiment, mating holes is made stepped, can be so that the bearing pin and the area of contact of mating holes that are inserted in wherein reduce, thus make driven member 13 and driving link 11 in the process of slide relative, the power of reducing friction reduces sliding resistance.Understandable, pin shaft hole 112 also can be made stepped or funnel-form.
In order to realize that driven member 13 moves to driving link 11, on the excircle of driven member 13, offer and jack 123 corresponding guiding plug helixs 135 radially.In the present embodiment, guiding plug helix 135 is 45 degree plug helixs, and its shape can be known by Fig. 6, Fig. 8 and Fig. 9 and see.Radially inserting transverse axis 17 in jack 123 and the guiding plug helix 135, one section of transverse axis 17 is inserted into radially in the jack 123, another section is joined by bearing 18 and guiding plug helix 135, thereby, make driven member 13 to move to driving link 11 by the connection of transverse axis 17 and the guiding of guiding plug helix 135.In the present embodiment, bearing 18 can be selected oil-containing sliding bearing 18 for use.Setting by bearing 18, making guiding plug helix 135 and contact between the transverse axis 17 become rolling is connected, reduced friction force greatly, make the axial motion resistance of flower wheel reduce greatly, make radial motion can convert longitudinal travel effectively to, improve accuracy in detection, reduced wearing and tearing.
In the present embodiment, the displacement sensing structure comprise the signal spare 19 that is fastened on driven member 13 inner rings, the magnet steel 20 of the inner ring that is installed in signal spare 19 and the induction pieces 21 that is arranged on signal spare 19 inboards.Induction pieces 21 is provided with displacement sensor 22 with respect to the position of magnet steel 20.Signal spare 19 is relative static on the rotation direction of driven member 13 with induction pieces 21, and driven member 13 relatively rotates with signal spare 19, and signal spare 19 axially moves under driven member 13 drives, and by the displacement of induction pieces 21 inductive magnetic steels 20, carry out bit shifting signal.Understandable, the displacement sensing structure also can be selected the corresponding construction as No. 200520100522.5, Chinese patent for use.
As Figure 10, shown in Figure 11, in the present embodiment, displacement sensor 22 is a hall sensor; The discoid Hall spare of induction pieces 21 general one-tenth.On the circumferential side wall of Hall spare, offer groove 212, be used for hall sensor is installed in the groove 212.Also be provided with the cabling via hole 213 that is connected with groove 212 on the Hall spare, detected signal outwards sent thereby be convenient to hall sensor.On the disc face of Hall spare, also can be provided with spline jack 214, be inserted in the spline jack 214, limit the rotation of Hall spare by pin 231 with spline sheet 23.Also be provided with the cable jack that installs and fixes cable on this Hall spare.
In order to limit moving axially of Hall spare, be provided with connecting element 24 in the outside of Hall spare, compress the edge of Hall spare by connecting element 24, better guaranteed the axial location of Hall spare and with one heart.
To shown in Figure 14, signal spare 19 is one section annulus as Figure 12, and its outside is provided with the fin 191 that matches with the groove 132 of driven member 13, by the cooperation of fin 191 and groove 132, makes signal spare 19 follow driven member 13 and axially moves.Be provided with groove position 192 in the inboard of signal spare 19, be used to install magnet steel 20.When signal spare 19 moved axially along with driven member 13, magnet steel 20 was also being followed and is being moved axially, and owing to Hall spare maintains static, be installed in the displacement that hall sensor on the Hall spare just can detect magnet steel 20, thereby output signal triggers the electric system action, and driving increases electric power.
Following driven member 13 for fear of signal spare 19 rotates, in the present embodiment, by protruding two blocks 215 on the sidewall of induction pieces 21, signal spare 19 is placed between two blocks 215, and that induction pieces 21 maintains static is moving, rotates thereby make signal spare 19 also can not follow driven member 13.Understandable, the mode that anti-stop signal spare 19 rotates can be diversified, for example offers the position, hole on induction pieces, and latch is set on signal spare; Perhaps two blocks are coupled together, make whole block or the like.
Further,, bring swinging of moment output 12, be provided with the banking stop 25 at the connection location place that is positioned at both in the outside of moment output 12 and driving link 11 for fear of when scrunching crank 91.Banking stop 25 is pressed between driving link 11 and the crank 91.Its structure such as Figure 15 and shown in Figure 16, the centre of banking stop 25 offers flower-shaped hole 251, thus banking stop 25 can followed crank 91 rotations.On the card of banking stop 25, also be provided with and strengthen projection 252, thereby increase the intensity of banking stop 25.Because banking stop 25 is between moment output 12 and driving link 11, thereby can limit the side oscillation of moment output 12 to crank 91; Opposite side then passes through the spacing of connecting element 24, Hall spare and bottom bracket cup 93 etc., has avoided the axial wobble of moment output 12, has improved accuracy in detection.
As shown in Figure 1, be the cross-sectional schematic of Moped Scooter torque sensor of the present invention, for the ease of understanding, the processing that it has adopted partial rotation to analyse and observe has schematically provided its matching relationship.Below with boosted vehicle static, rider's state that scrunches crank 91 of having an effect is that example illustrates the action relationships between each part.Crank 91 drives driving link 11 and rotates, and under the binding of bearing pin, driven member 13 is along with driving link 11 rotates.At this moment, because boosted vehicle and rider's weight makes to remain static in flakes that is to say that moment output 12 remains static, transverse axis 17 also remains static; And driven member 13 rotations are delivered to moment output 12 by transverse axis 17, at this moment, must cause the guiding plug helix 135 of driven member 13 to produce relative motion with transverse axis 17, and that moment output 12 is in is static, then make driven member 13 move, realized converting rotatablely moving of driving link 11 to longitudinal travel towards driving link 11.Driven member 13 is in the process that moves towards driving link 11, and magnet steel 20 is movement therewith also, and hall sensor detects the displacement of magnet steel 20, output signal, thus finished moment sensing, by the battery system power supply, produce power-assisted subsequently.When the boosted vehicle cruising, under the effect of spring 15, promote driven member 13 and reset.And when running into upward slope or load is arranged, produce above-mentioned action once more, and convert rotatablely moving of driving link 11 to longitudinal travel, trigger battery system and produce power-assisted.
Claims (10)
1. a torque sensing device of electric cycle comprises the driving link of introducing power, the moment output that is arranged on described driving link outer ring, drives driven member that rotates and the displacement sensing structure that is arranged on described driven member inner ring by described driving link by connecting piece; Be provided with mobile space between described driven member and the described driving link; Between described driven member and driving link, be provided with and promote the elastic component that described driven member resets; It is characterized in that: offer radially jack on the circumference of described moment output; Offer the guiding plug helix on the excircle of described driven member; Described jack and guiding are inserted with transverse axis in the plug helix, and a section of described transverse axis joins by bearing and described guiding plug helix, and another of described transverse axis section insertion is installed in the described radially jack.
2. torque sensing device of electric cycle according to claim 1 is characterized in that, described guiding plug helix is 45 degree plug helixs.
3. torque sensing device of electric cycle according to claim 1 and 2 is characterized in that, is provided with the banking stop at the connection location place that is positioned at both between described moment output and the driving link.
4. torque sensing device of electric cycle according to claim 1 is characterized in that, the connecting piece of described driving link and driven member is a bearing pin;
Described driving link offers the axial pin axis hole, and described driven member offers the ladder mating holes that cooperates with described pin shaft hole, and described bearing pin is a tight fit in the pin shaft hole of described driving link and is slidingly fitted in the mating holes of driven member.
5. torque sensing device of electric cycle according to claim 4 is characterized in that, described elastic component is a spring; Offer the ladder accommodation hole that holds described spring on described driving link and the driven member.
6. torque sensing device of electric cycle according to claim 1, it is characterized in that the magnet steel of the inner ring that described displacement sensing structure comprises the signal spare that is fastened on described driven member inner ring, be installed in described signal spare and the induction pieces that is arranged on described signal spare inboard; Described induction pieces is provided with displacement sensor with respect to the position of described magnet steel;
Described signal spare is relative static on the rotation direction of described driven member with described induction pieces, described driven member and described signal spare relatively rotate, and described signal spare axially moves under described driven member drives, and responds to the displacement of described magnet steel, carry out bit shifting signal by described induction pieces.
7. torque sensing device of electric cycle according to claim 6 is characterized in that, described induction pieces is a Hall spare; Described displacement sensor is the hall sensor that is installed on the Hall spare; Also be provided with two spline jacks that insert for the spline sheet on the described Hall spare, described spline sheet inserts described spline jack and limits described Hall spare rotation, also is provided with the cable jack that cable is installed on the described Hall spare.
8. torque sensing device of electric cycle according to claim 6, it is characterized in that, described signal spare outer wall is provided with fin, and the inwall of described driven member is provided with the groove that described fin matches, and described fin and groove fit make described signal spare follow described driven member and axially move.
9. torque sensing device of electric cycle according to claim 7 is characterized in that, described boosted vehicle moment sensor also is provided with the connecting element that is sleeved on the described moment output, and described connecting element is located described Hall spare.
10. torque sensing device of electric cycle according to claim 1 is characterized in that, described bearing is an oil-containing sliding bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100757562A CN101367422B (en) | 2007-08-15 | 2007-08-15 | Torque sensing device of electric cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100757562A CN101367422B (en) | 2007-08-15 | 2007-08-15 | Torque sensing device of electric cycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101367422A CN101367422A (en) | 2009-02-18 |
| CN101367422B true CN101367422B (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100757562A Expired - Fee Related CN101367422B (en) | 2007-08-15 | 2007-08-15 | Torque sensing device of electric cycle |
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| CN (1) | CN101367422B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612702B (en) * | 2013-10-29 | 2016-06-29 | 苏州莱士格车业有限公司 | Speed regulating device in electric bicycle |
| CN107031784A (en) * | 2017-05-04 | 2017-08-11 | 深圳哥智行科技有限公司 | The chain wheel formula moment sensor of bicycle |
| NL1042415B1 (en) * | 2017-06-02 | 2018-12-11 | Idbike B V | Displacement measuring device |
| CN109131710B (en) * | 2018-09-08 | 2022-11-18 | 钟德斌 | Middle shaft torque sensor and hub motor of power-assisted and body-building integrated bicycle |
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| CN2374854Y (en) * | 1999-03-22 | 2000-04-19 | 中国轻骑集团有限公司 | Pedal moment testing device for electric cycle |
| CN2440695Y (en) * | 2000-09-07 | 2001-08-01 | 中国航空工业总公司汉江机械厂 | Moment sensor for electric bicycle chain wheel |
| CN2599529Y (en) * | 2002-10-15 | 2004-01-14 | 刘名军 | Moment and speed sensor for power-aid electric bicycle |
| CN2775631Y (en) * | 2005-02-05 | 2006-04-26 | 郭晓 | Electric bicycle torque sensor |
| CN201096565Y (en) * | 2007-09-04 | 2008-08-06 | 刘海平 | Electric motor-assisted vehicle moment sensing device |
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2007
- 2007-08-15 CN CN2007100757562A patent/CN101367422B/en not_active Expired - Fee Related
Patent Citations (5)
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|---|---|---|---|---|
| CN2374854Y (en) * | 1999-03-22 | 2000-04-19 | 中国轻骑集团有限公司 | Pedal moment testing device for electric cycle |
| CN2440695Y (en) * | 2000-09-07 | 2001-08-01 | 中国航空工业总公司汉江机械厂 | Moment sensor for electric bicycle chain wheel |
| CN2599529Y (en) * | 2002-10-15 | 2004-01-14 | 刘名军 | Moment and speed sensor for power-aid electric bicycle |
| CN2775631Y (en) * | 2005-02-05 | 2006-04-26 | 郭晓 | Electric bicycle torque sensor |
| CN201096565Y (en) * | 2007-09-04 | 2008-08-06 | 刘海平 | Electric motor-assisted vehicle moment sensing device |
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| JP特开2004-99019A 2004.04.02 |
| JP特开平10-147283A 1998.06.02 |
| JP特开平9-297077A 1997.11.18 |
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