CN103381876A - Central shaft type torque sensor - Google Patents
Central shaft type torque sensor Download PDFInfo
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- CN103381876A CN103381876A CN201310344016XA CN201310344016A CN103381876A CN 103381876 A CN103381876 A CN 103381876A CN 201310344016X A CN201310344016X A CN 201310344016XA CN 201310344016 A CN201310344016 A CN 201310344016A CN 103381876 A CN103381876 A CN 103381876A
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Abstract
The invention discloses a central shaft type torque sensor which comprises a tooth disk, a central shaft, cranks, a left pedal component, a right pedal component, an elastic connector, a shaft sleeve, a left end cover and a flange, wherein the cranks are arranged at two ends of the central shaft, the elastic connector is sleeved on the central shaft, the shaft sleeve is sleeved on the elastic connector, the left end cover is sleeved on the left side of the central shaft and matched with the shaft sleeve, and the flange is sleeved on the right side of the central shaft and rotatably matched with the central shaft. The left end of the elastic connector is fixedly connected with the central shaft, the right end of the elastic connector is fixedly matched with the flange, the tooth disk is fixedly matched with the flange, magnetic rings are sleeved at two ends of a deformation position of the elastic connector respectively, and one side of the shaft sleeve is provided with two groups of Hall elements opposite to the two magnetic rings. When the left and/or right pedal component applies stress, the central shaft rotates, the elastic connector is twisted by the stress and then drives the flange and the tooth disk to generate angular displacement relative to the central shaft, the two groups of Hall elements detect foot stepping torque signals through angular difference signals of the two magnetic rings after the elastic connector deforms, the output power of a motor is controlled, and corresponding assistance is provided.
Description
Technical field
the present invention relates to a kind of central-axis type torque sensor.
Background technology
it is American-European and Japanese the most popular at present a kind of vehicle that pin is stepped on the assistance type Electrical Bicycle, this car only detects people's pin and steps on the size of moment and corresponding drive motor reinforcing when people's pin is stepped on, the mode that gathers moment has a variety of, wherein torque sensor being placed in to axis (B.B.PART) is the popular mode in current Europe, its advantage is the little good concealment highly versatile of volume, due to the standard form parts that are bicycle, therefore be conducive to batch manufacturing.The world-renowned bearing of the FAG(maker of current Germany), THUN company has all released the torque sensor of central-axis type, the assistance type Electrical Bicycle that doctor (BOCHS) company releases after it is improved has had the market share in Europe 25%, but they have the monolateral force mode that adds of output by current product when mainly still left foot is trampled, according to left foot, step on to such an extent that signal is simulated the right crus of diaphragm reinforcing.
Summary of the invention
the present invention seeks to: provide a kind of simple in structure, can the afterburning central-axis type torque sensor of both feet.
technical scheme of the present invention is: a kind of central-axis type torque sensor, comprise fluted disc, two cranks and axis, described torque sensor also comprises the elastic connector be sheathed on axis, be sheathed on elastic connector and can with axis and elastic connector axle sleeve in relative rotation, the left end cap that is sheathed on the axis left side and is fixed with axle sleeve, and be sheathed on the axis right side and with the flange of axis normal-running fit, the left end of described elastic connector is fixedly connected with axis, right-hand member and the flange of described elastic connector are fixed, the centre hole of described fluted disc and the outer ring of this flange are fixed, described two cranks are installed on respectively the two ends of axis and are connected with accordingly a left side, right step assembly, the two ends of described elastic connector deformation place are arranged with respectively magnet ring, described axle sleeve one side has a left side, right two groups of Hall elements relative with two magnet rings, when having condition of loading bottom left and/or right step assembly afterburning, axis rotates, stressed rear drive flange and the relative axis generation of the fluted disc angular transposition of being distorted of elastic connector, two groups of Hall elements are out of shape the size of differential seat angle signal between rear two magnet rings by elastic connector simultaneously, the torque signals that people's pin is stepped on detected, to control the horsepower output of motor, corresponding power-assisted is provided.
the concrete structure of described elastic connector is: described elastic connector comprises resilient deformation section and is located at a resilient deformation section left side, the left canned paragraph of right both sides and right canned paragraph, there is at least one H type groove on described resilient deformation section, described H type groove has two deep-slotted chip breakers that circumferentially extend and is communicated in the axial groove between two deep-slotted chip breakers, the circumferential lengths of above-mentioned deep-slotted chip breaker is less than the periphery length of resilient deformation section, described two magnet rings are sheathed on respectively a left side, right canned paragraph is near the position of resilient deformation section, socket connection pin between the adjustment hole in described right canned paragraph left side and the pin-and-hole of axis, described connecting pin can be in adjustment hole circumferential movement, aperture by adjustment hole reaches the rotary stopper purpose.The preferred technical scheme of the present invention is, described resilient deformation section has two or more H type grooves that axially staggers and circumferentially stagger, and in described H type groove, the outer end of at least one deep-slotted chip breaker is stretched between two deep-slotted chip breakers of adjacent H type groove.
further, between described axle sleeve left side and axis, between the right canned paragraph of axle sleeve right side and elastic connector, be respectively equipped with clutch shaft bearing and the second bearing, be provided with the 3rd bearing between the right side of described right canned paragraph, flange and axis.The setting of above-mentioned clutch shaft bearing and the second bearing, make axle sleeve under motionless state, axis, elastic connector right side can be rotated relative to axle sleeve, and the setting of the 3rd bearing, have realized between elastic connector right side and axis, relatively rotating between flange and axis.
concrete connection mode between the right-hand member of described elastic connector and flange is: the circumferential interval of the right-hand member of described right canned paragraph is furnished with several draw-in grooves, described flange endoporus perisporium is provided with several fixture blocks corresponding with draw-in groove, and the right-hand member of right canned paragraph and flange are realized being fixed by the clamping of draw-in groove and fixture block.
the left end of described elastic connector with the concrete fixed form between axis is: the left canned paragraph of described elastic connector and axis be by key be connected realize relatively-stationary.In the present invention, above-mentioned key connects preferred spline joint.
the concrete mounting means of described Hall element is: described axle sleeve one side has axially extended opening, is provided with the PBC plate in this opening, and described two groups of Hall elements are arranged on this PBC plate.
advantage of the present invention is:
1. the present invention is simple in structure and can both feet afterburning, when left step assembly and/or the reinforcing of right step assembly, axis rotates, drive flange and fluted disc rotation after the elastic connector stress deformation, differential seat angle after while two groups of Hall elements are out of shape by elastic connector between two magnet rings detects the torque signals that people's pin is stepped on, to control the horsepower output of motor, provide power-assisted.
2. the elastic connector in the present invention, its structure is comparatively novel, with traditional plug helix elastic connector, with the parallel slot elastic connector, compares, and has that deformation angle is large, stress relief is even, easy to process, good linearity characteristics.
The accompanying drawing explanation
below in conjunction with drawings and Examples, the invention will be further described:
fig. 1 is cutaway view of the present invention;
fig. 2 is one of lateral plan of the present invention; (not drawing axle sleeve)
the cutaway view that Fig. 3 is Fig. 2;
fig. 4 is two of lateral plan of the present invention; (not drawing axle sleeve)
the cutaway view that Fig. 5 is Fig. 4;
the block diagram that Fig. 6, Fig. 7 are Elastic adaptor union of the present invention;
the lateral plan that Fig. 8 is flange in the present invention.
wherein: 1 fluted disc; 2 axis; 3 elastic connectors; 31 resilient deformation section; 32 right canned paragraphs; 321 adjustment holes; 322 draw-in grooves; 33H type groove; 331 deep-slotted chip breakers; 332 axial grooves; 34 left canned paragraphs; 4 axle sleeves; 5 left end caps; 6 flanges; 61 fixture blocks; 7 magnet rings; 8 PBC plates; 9 Hall elements; 10 connecting pins; 11 clutch shaft bearings; 12 second bearings; 13 the 3rd bearings.
The specific embodiment
embodiment: as shown in Figures 1 to 8, a kind of central-axis type torque sensor, comprise fluted disc 1, two cranks, axis 2, be sheathed on the elastic connector 3 on axis 2, be sheathed on elastic connector 3 and can with axis 2 and elastic connector 3 axle sleeve 4 in relative rotation, the left end cap 5 that is sheathed on axis 2 left sides and is fixed with axle sleeve 4, and be sheathed on axis 2 right sides and with the flange 6 of axis 2 normal-running fiies, the left end of described elastic connector 3 is fixedly connected with axis 2, the right-hand member of described elastic connector 3 and flange 6 are fixed, the outer ring of the centre hole of described fluted disc 1 and this flange 6 is fixed, described two cranks are installed on respectively the two ends of axis 2 and are connected with accordingly a left side, right step assembly, the two ends of described elastic connector 3 deformation places are arranged with respectively magnet ring 7, described axle sleeve 4 one sides have axially extended opening, be provided with PBC plate 8 in this opening, there is a left side on PBC plate 8, right two groups of Hall elements 9 relative with two magnet rings 7.
further, elastic connector 3 left sides in the present invention are fixing with axis, are equivalent to input end, and elastic connector 3 right sides are unfixed with axis and are connected fluted disc by flange, are equivalent to mouth.
in the present embodiment, the concrete structure of described elastic connector 3 is: described elastic connector 3 comprises resilient deformation section 31 and is located at resilient deformation section 31 left sides, the left canned paragraph 35 of right both sides and right canned paragraph 32, there are two H type grooves 33 that axially stagger and circumferentially stagger on described resilient deformation section 31, described H type groove 33 has two deep-slotted chip breakers 331 that circumferentially extend and is communicated in the axial groove 332 between two deep-slotted chip breakers 331, the circumferential lengths of above-mentioned deep-slotted chip breaker 331 is less than the periphery length of resilient deformation section 31, in described H type groove 33, the both ends of a deep-slotted chip breaker 331 are stretched into respectively between two deep-slotted chip breakers 331 of another H type groove 33, described two magnet rings 7 are sheathed on respectively a left side, right canned paragraph 34, 32 positions near resilient deformation section 31, socket connection pin 10 between the adjustment hole 321 in described right canned paragraph 32 left sides and the pin-and-hole of axis 2, described connecting pin 10 can be in the interior circumferential movement of adjustment hole 321.The setting of this connecting pin 10, not only played position-limiting action, and avoided elastic connector 3 excessive distortion and explosion occurs.The structure of above-mentioned elastic connector 3 is comparatively novel, with traditional plug helix elastic connector, with the parallel slot elastic connector, compares, and has that deformation angle is large, stress relief is even, easy to process, good linearity characteristics.
concrete connection mode between the right-hand member of described elastic connector 3 and flange 6 is: the circumferential interval of the right-hand member of described right canned paragraph 32 is furnished with several draw-in grooves 322, described flange 6 endoporus perisporiums are provided with several fixture blocks corresponding with draw-in groove 322 61, and the right-hand member of right canned paragraph 32 and flange 6 are realized being fixed by draw-in groove 322 and the clamping of fixture block 61.
the left end of described elastic connector 3 with the concrete fixed form between axis 2 is: the left canned paragraph 34 of described elastic connector 3 and axis 2 be by key be connected realize relatively-stationary.In the present embodiment, above-mentioned key connects preferred spline joint.
between described axle sleeve 4 left sides and axis 2, between the right canned paragraph 32 of axle sleeve 4 right sides and elastic connector 3, be respectively equipped with clutch shaft bearing 11 and the second bearing 12, be provided with the 3rd bearing 13 between the right side of described right canned paragraph 32, flange 6 and axis 2.The setting of above-mentioned clutch shaft bearing 11 and the second bearing 12, make axle sleeve 4 under motionless state, axis 2, elastic connector 3 right sides can be rotated relative to axle sleeve 4, and the setting of the 3rd bearing 13, have realized between elastic connector 3 right sides and axis 2, relatively rotating between flange 6 and axis 2.
principle of work of the present invention is: when having condition of loading bottom left and/or right step assembly afterburning, axis 2 rotates, stressed rear drive flange 6 and the relative axis generation of fluted disc 1 angular transposition of being distorted of elastic connector 3, two groups of Hall elements 9 are by the size of rear 7 the differential seat angle signals of two magnet rings of elastic connector 3 distortion simultaneously, the torque signals that people's pin is stepped on detected, to control the horsepower output of motor, provide corresponding power-assisted.
the present invention substitutes existing Middle shaft assembly and the torque signals that people's pin is stepped on can be detected, and reaches the power-assisted effect gathered after people's pin is stepped on torque signals.Integral structure is comparatively novel, while trampling with traditional left foot, has the monolateral force mode that adds of output to compare, and it can be double-legged afterburning, and practicality is stronger.
be only below concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, within all dropping on the present invention's scope required for protection.
Claims (7)
1. a central-axis type torque sensor, comprise fluted disc (1), two cranks and axis (2), it is characterized in that: described torque sensor also comprises the elastic connector (3) be sheathed on axis (2), be sheathed on elastic connector (3) upper and can with axis (2) and elastic connector (3) axle sleeve (4) in relative rotation, the left end cap (5) that is sheathed on axis (2) left side and is fixed with axle sleeve (4), and be sheathed on axis (2) right side and with the flange (6) of axis (2) normal-running fit, the left end of described elastic connector (3) is fixedly connected with axis (2), the right-hand member of described elastic connector (3) and flange (6) are fixed, the outer ring of the centre hole of described fluted disc (1) and this flange (6) is fixed, described two cranks are installed on respectively the two ends of axis (2) and are connected with accordingly a left side, right step assembly, the two ends of described elastic connector (3) deformation place are arranged with respectively magnet ring (7), described axle sleeve (4) one sides have a left side, right two groups of Hall elements (9) relative with two magnet rings (7), when having condition of loading bottom left and/or right step assembly afterburning, axis (2) rotates, stressed rear drive flange (6) and the relative axis generation of fluted disc (1) angular transposition of being distorted of elastic connector (3), two groups of Hall elements (9) are by the size of differential seat angle signal between rear two magnet rings (7) of elastic connector (3) distortion simultaneously, the torque signals that people's pin is stepped on detected, to control the horsepower output of motor, corresponding power-assisted is provided.
2. a kind of central-axis type torque sensor according to claim 1, it is characterized in that: described elastic connector (3) comprises resilient deformation section (31) and is located at resilient deformation section (a 31) left side, the left canned paragraph (34) of right both sides and right canned paragraph (32), there is at least one H type groove (33) on described resilient deformation section (31), described H type groove (33) has two deep-slotted chip breakers (331) that circumferentially extend and is communicated in the axial groove (332) between two deep-slotted chip breakers (331), the circumferential lengths of above-mentioned deep-slotted chip breaker (331) is less than the periphery length of resilient deformation section (31), described two magnet rings (7) are sheathed on respectively a left side, right canned paragraph (34, 32) position of close resilient deformation section (31), socket connection pin (10) between the adjustment hole (321) in described right canned paragraph (32) left side and the pin-and-hole of axis (2), described connecting pin (10) can be in adjustment hole (321) circumferential movement.
3. a kind of central-axis type torque sensor according to claim 2, it is characterized in that: described resilient deformation section (31) has two or more H type grooves (33) that axially staggers and circumferentially stagger, and in described H type groove (33), the outer end of at least one deep-slotted chip breaker (331) is stretched between two deep-slotted chip breakers (331) of adjacent H type groove (33).
4. a kind of central-axis type torque sensor according to claim 2, it is characterized in that: between described axle sleeve (4) left side and axis (2), between the right canned paragraph (32) of axle sleeve (4) right side and elastic connector (3), be respectively equipped with clutch shaft bearing (11) and the second bearing (12), be provided with the 3rd bearing (13) between the right side of described right canned paragraph (32), flange (6) and axis (2).
5. according to claim 2 or 3 or 4 described a kind of central-axis type torque sensors, it is characterized in that: the circumferential interval of right-hand member of described right canned paragraph (32) is furnished with several draw-in grooves (322), described flange (6) endoporus perisporium is provided with several fixture blocks (61) corresponding with draw-in groove (322), and the right-hand member of right canned paragraph (32) and flange (6) are realized being fixed by draw-in groove (322) and the clamping of fixture block (61).
6. according to claim 2 or 3 or 4 described a kind of central-axis type torque sensors, it is characterized in that: the left canned paragraph (34) of described elastic connector (3) and axis (2) be by key connect realize relatively-stationary.
7. according to claim 1 or 2 or 3 or 4 described a kind of central-axis type torque sensors, it is characterized in that: described axle sleeve (4) one sides have axially extended opening, be provided with PBC plate (8) in this opening, described two groups of Hall elements (9) are arranged on this PBC plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310344016.XA CN103381876B (en) | 2013-08-08 | 2013-08-08 | A kind of Central shaft type torque sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310344016.XA CN103381876B (en) | 2013-08-08 | 2013-08-08 | A kind of Central shaft type torque sensor |
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| CN103381876A true CN103381876A (en) | 2013-11-06 |
| CN103381876B CN103381876B (en) | 2015-12-23 |
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| CN201310344016.XA Active CN103381876B (en) | 2013-08-08 | 2013-08-08 | A kind of Central shaft type torque sensor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292370A (en) * | 2014-05-29 | 2016-02-03 | 苏州雄风电机有限公司 | Mid-mounted motor of electric bicycle |
| WO2016065500A1 (en) * | 2014-10-31 | 2016-05-06 | 太仓市荣驰电机有限公司 | Electric vehicle central shaft torque sensing system |
| WO2017117830A1 (en) * | 2016-01-08 | 2017-07-13 | 深圳市华科安测信息技术有限公司 | Leg stress monitoring apparatus for bicycle enthusiasts |
| 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 |
| CN108152741A (en) * | 2018-01-26 | 2018-06-12 | 辽宁工业大学 | A kind of driving motor for electric automobile locked-rotor torque test device and test method |
| CN109698582A (en) * | 2019-01-16 | 2019-04-30 | 广西玉柴机器股份有限公司 | A kind of connection method and tooling with flange motor |
| CN114526853A (en) * | 2022-02-23 | 2022-05-24 | 深圳瑞湖科技有限公司 | Shaft torque detection device |
| CN114684312A (en) * | 2021-07-20 | 2022-07-01 | 建德市五星车业有限公司 | Power-assisted output mechanism, mounting method thereof and electric power-assisted bicycle |
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| CN202083502U (en) * | 2011-04-08 | 2011-12-21 | 深圳市琛玛华夏科技有限公司 | Moment sensor of electric power-assisted vehicle |
| WO2013041900A1 (en) * | 2011-09-20 | 2013-03-28 | Aktiebolaget Skf | Crankset assembly for a bicycle and bicycle equipped with such a crankset assembly |
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| CN203544280U (en) * | 2013-08-08 | 2014-04-16 | 苏州捷诚科技有限公司 | Center shaft type torque sensor |
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Patent Citations (5)
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| DE19613079A1 (en) * | 1996-04-02 | 1997-11-06 | Ellsaesser Dietrich Gerhard | Power measurement and control system primarily for bicycles with add-on auxiliary drive unit |
| CN202083502U (en) * | 2011-04-08 | 2011-12-21 | 深圳市琛玛华夏科技有限公司 | Moment sensor of electric power-assisted vehicle |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105292370A (en) * | 2014-05-29 | 2016-02-03 | 苏州雄风电机有限公司 | Mid-mounted motor of electric bicycle |
| CN105292370B (en) * | 2014-05-29 | 2018-01-23 | 苏州雄风电机有限公司 | Electric bicycle motor |
| WO2016065500A1 (en) * | 2014-10-31 | 2016-05-06 | 太仓市荣驰电机有限公司 | Electric vehicle central shaft torque sensing system |
| US10358185B2 (en) | 2014-10-31 | 2019-07-23 | Taicang Rongchi Motor Co., Ltd | Electric vehicle central shaft torque sensing system |
| WO2017117830A1 (en) * | 2016-01-08 | 2017-07-13 | 深圳市华科安测信息技术有限公司 | Leg stress monitoring apparatus for bicycle enthusiasts |
| 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 |
| CN108152741A (en) * | 2018-01-26 | 2018-06-12 | 辽宁工业大学 | A kind of driving motor for electric automobile locked-rotor torque test device and test method |
| CN108152741B (en) * | 2018-01-26 | 2023-08-29 | 辽宁工业大学 | Device and method for testing locked-rotor torque of driving motor of electric automobile |
| CN109698582A (en) * | 2019-01-16 | 2019-04-30 | 广西玉柴机器股份有限公司 | A kind of connection method and tooling with flange motor |
| CN109698582B (en) * | 2019-01-16 | 2023-12-19 | 广西玉柴机器股份有限公司 | Connection method and tool for motor with flange |
| CN114684312A (en) * | 2021-07-20 | 2022-07-01 | 建德市五星车业有限公司 | Power-assisted output mechanism, mounting method thereof and electric power-assisted bicycle |
| CN114526853A (en) * | 2022-02-23 | 2022-05-24 | 深圳瑞湖科技有限公司 | Shaft torque detection device |
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