CN102297736A - Crank torsion sensing device and detection method - Google Patents
Crank torsion sensing device and detection method Download PDFInfo
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- CN102297736A CN102297736A CN201010204844XA CN201010204844A CN102297736A CN 102297736 A CN102297736 A CN 102297736A CN 201010204844X A CN201010204844X A CN 201010204844XA CN 201010204844 A CN201010204844 A CN 201010204844A CN 102297736 A CN102297736 A CN 102297736A
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Abstract
The invention discloses a crank torsion sensing device and a crank torsion detection method. The crank torsion sensing device is arranged at a five-way shaft of a power-assisted electric vehicle; a backward pull is generated at the pivot of the five-way shaft through a reacting force borne by a chain driven by a big fluted disc when a pedal is treaded, and the torsion value generated when the pedal is treaded can be acquired by measuring the magnitude of the backward pull; and the magnitude of the backward pull borne by the five-way shaft is acquired on the basis of the similar principle of a spring platform scale, by measuring the displacement of the five-way shaft and according to the set elasticity coefficient and the deformation of a spring. The displacement generated by the five-way shaft due to stress enables a detector to generate a voltage or current signal, the electric signal is used as a sensing control signal, and the control signal can determine the magnitude of the driving power, so that the purpose of power-assisted drive is fulfilled.
Description
Technical field
The present invention is about a kind of crank torque induction installation and method for detecting thereof, especially a kind of torque magnitude that legpower produces of power-assisted electric vehicle in driving or the device of the torque magnitude of being trampled when measuring motion, energy that is consumed when detecting the suitable auxiliary power of may command electro-motor output by this or calculating motion of detecting.
Background technology
At present the kinematic train of power-assisted electric vehicle can comprise an electro-motor that auxiliary power is provided mostly, motor power can be incorporated into rider's legpower, and the driving power-assisted electric vehicle moves ahead, so can reach the purpose of saving rider's muscle power, and can cooperate the situation on road surface to make motor adjust outputting power.For reaching this purpose, put on the sensing rider whether strength increases on the pedal so can on the legpower bang path, establish a legpower sense mechanism, according to the outputting power of sensing result controllable motor to alleviate rider's the application of force.
And the power-assisted electric vehicle of known tool torsion sensing function is mainly divided into two kinds of patterns, and first kind is the control of simple switch, when torsion that legpower produced surpasses or is lower than a certain size, promptly starts or close the power output of motor; And another kind of pattern is the size with torsion sensing mechanism sensing torsion that legpower is produced, and controls the outputting power of electro-motor with the size of torsion.If, often can't satisfy the demand of rider's elasticity of demand power-assisted only with the power output of switch control motor;
Yet present torsion sensing mechanism often needs to utilize complicated planetary bevel gear group to produce differential effect, again differential relative angular displacement is converted to the sensing value of torsion, and above-mentioned torsion sensing mechanism, as the novel patent of Chinese T W No. 092205249 (bicycle torsion arrangement for detecting) promptly is to utilize planetary bevel gear assembly unification displacement measuring element, when the ring gear of planetary gear unit bears bigger torsion, but moving one connecting rod produces the trace swing, and make magnet unit and displacement measuring element produce relative displacement, and the relative displacement that this displacement measuring element is produced, system can make the induction end of this displacement measuring element respond to an electromotive force, and this electromotive force system can be used as the controlling signal of induction, further controlling signal can start electric power, to reach the driven by power purpose.
Yet the cost of above-mentioned planetary bevel gear group mechanism is not low, and need use a lot of driving members and form quite complicated mechanism, for example described in the Chinese T W patent of invention No. 88114867 (device and bicycle crank axle linking part assembly are discovered in the bicycle use torque), though this torsion detecting function is integrated in the five-way axle associated mechanisms, but the torque magnitude that this invention need utilize four groups of pressure detection devices to respond to when trampling bicycle pedal to be produced, add relevant spare part processing precise and complexity, and assembling procedure still has and improves the space.
Therefore,,, also can reduce the degree of difficulty of assembling procedure, should be the best solution that meets present industrial community except can significantly reducing the production cost of power-assisted electric vehicle if a kind of simply constructed apparatus for sensing torque force can be provided.
Summary of the invention
Purpose of the present invention promptly is to provide a kind of crank torque induction installation and method for detecting thereof, and its simple structure is easy to assembly, can accurately measure crank torque, can also reduce cost, and reduces installation procedure.
For achieving the above object, the invention discloses a kind of crank torque method for detecting, the torsion that is produced to trample makes five-way axle generation one strength of displacement backward, and make the five-way axle produce one by an elastic device to be proportional to the displacement backward of trampling the torsion that is produced, detect this displacement size again and can learn and trample the torsion that is produced.
A kind of crank torque induction installation is also disclosed, wherein this crank torque induction installation of being located on the five-way axle is installed in the vehicle frame, and an annular recessed portion respectively is set between the axis of this five-way axle and the two crank axle linking parts, it is characterized in that this crank torque induction installation comprises:
Two annular recessed portion covered devices are sheathed on the annular recessed portion respectively, and interconnect with the axis covered device that is sheathed on axis, and these two annular recessed portion covered devices all comprise a bearing element, one second inner sleeve, a ring plate and an internal axle sleeve;
One axis covered device, be sheathed on the axis, one first inner sleeve, a shell fragment, a magnetite and an outer sleeve have been comprised, and a sheathed separately outer shaft on axis covered device and this two annular recessed portion covered devices, so that it is these two annular recessed portion covered devices and axis covered device are fixing simultaneously, this shell fragment and magnetite are arranged on first inner sleeve in addition, and this shell fragment is provided with a top brace part, and this top brace part directly is held on the first inner sleeve outer rim;
One sensor is arranged on vehicle frame or the outer sleeve, and that the position is set is corresponding with magnetite;
When rider's pushes pedals, this shell fragment can make the micro-displacement of this first inner sleeve bounce-back generation fixed-direction, and again by the collocation that is arranged at magnetite and sensor, in order to record the variation in magnetic field, to detect the size of trampling torsion.
Wherein, this bearing element is sheathed on this annular recessed portion, and sheathed this second inner sleeve on this bearing element, and places this ring plate in this second inner sleeve front end, and this internal axle sleeve then is sheathed on this second inner sleeve and the ring plate.
Wherein, this ring plate is an ellipse, and the external diameter of this ring plate is greater than second inner sleeve, and the internal diameter of the set ring-type location division of this internal axle sleeve inner edge equals the external diameter of this ellipse ring plate.
Wherein, form half arc shaped slits between this second inner sleeve and this internal axle sleeve.
Wherein, this first inner sleeve is sheathed on the axis, and this shell fragment is positioned between the internal axle sleeve, and a sheathed outer sleeve on this first inner sleeve and the shell fragment.
Wherein, this first inner sleeve and outer sleeve all are provided with an opening, and these two openings are corresponding with the aperture position on the vehicle frame, so that sensor can pass the opening of this vehicle frame and the opening of outer sleeve, that the position is set is corresponding with the magnetite of first inner sleeve.
Wherein, this outer sleeve, first inner sleeve and vehicle frame correspondence separately are provided with an anti-hole of revolving, and should anti-revolve the hole again by a locking part, and then penetrate the anti-of outer sleeve, first inner sleeve and vehicle frame and revolve in the hole.
Wherein, this sensor is arranged to a rare energy by the change in displacement of induction magnetite and then the Hall element of the electrical signal that change is sensed.
A kind of crank torque induction installation is also disclosed, wherein this crank torque induction installation of being located on the five-way axle is installed in the vehicle frame, and an annular recessed portion is set between the axis of this five-way axle and the first crank axle linking part, and and be provided with an extension between the second crank axle linking part, and this crank torque induction installation comprises:
One annular recessed portion covered device is sheathed on the annular recessed portion, and this annular recessed portion covered device has comprised a bearing element and a clasp;
A plurality of magnet rings are sheathed on the axis, and these a plurality of magnet rings in order to record the change frequency in magnetic field, detect the size of rotating speed by the collocation of magnet ring and sensor;
One extension covered device, be sheathed on the extension, this extension covered device comprises the second bearing external member and one the 3rd bearing external member that a clutch shaft bearing external member, has magnetite, this clutch shaft bearing external member and the 3rd bearing external member left and right sides of inserting the second bearing external member wherein, be positioned on the extension to finish driving fit, and a sheathed flexible member and a magnetite on this second bearing external member outer rim;
One outer sleeve, this outer sleeve is wherein sheathed with a plurality of magnet rings, extension covered device and flexible member;
Two axle sleeves have comprised first axle sleeve and one second axle sleeve, and wherein this first axle sleeve directly is sheathed on annular recessed portion covered device and outer sleeve one end, and this second axle sleeve then is sheathed on the outer sleeve other end;
One sensor is arranged on vehicle frame or the outer sleeve, and that the position is set is corresponding with magnetite;
Therefore when rider's pushes pedals, this flexible member can make this extension covered device bounce-back produce the micro-displacement of fixed-direction, and by the collocation of the magnetite and the sensor of this extension covered device, in order to recording the variation in magnetic field, and a plurality of magnet ring detects the size of trampling torsion and rotating speed because of the changes of magnetic field frequency that the rotation of five-way axle produces.
Wherein, this bearing element is sheathed on the annular recessed portion, and between this bearing element and the first crank axle linking part a sheathed clasp.
Wherein, this flexible member is provided with one and adjusts draw ring, in order to the second bearing external member with this extension covered device of flexible member banding.
Wherein, the external diameter of this axis is greater than the external diameter of this annular recessed portion, and this annular recessed portion be one by in the oblique structure that amplifies gradually of the axial first crank axle linking part.
Wherein, the external diameter of this axis is greater than the external diameter of this annular recessed portion, and this annular recessed portion be one by in the diminishing oblique structure of the axial first crank axle linking part.
Wherein, four openings are set on this vehicle frame, the opening that one of them is placed for the adjustment draw ring that flexible member is provided, another aperture position is then corresponding with the aperture position of this outer sleeve, so that it is be arranged at the opening that sensor on the vehicle frame passes this vehicle frame and outer sleeve, corresponding with magnet ring and the set position of magnetite.
Wherein, this second axle sleeve and vehicle frame, correspondence is provided with at least one pilot hole separately, and this pilot hole is again by a pilot pin, and then penetrate in the vehicle frame and second axle sleeve.
Wherein, can place an oil sealing element in this second axle sleeve, this oil sealing element passes the second crank axle linking part, and by the pilot pin that penetrates second axle sleeve and vehicle frame, positions.
Wherein, this sensor is arranged to the change in displacement of a rare energy by induction magnetite and magnet ring, and then changes the Hall element of the electrical signal of being sensed.
Wherein, this extension covered device has comprised many ring-type steel ball elements, a bearing holder (housing, cover) and flexible members, and wherein this flexible member is sheathed on the bearing holder (housing, cover), and this bearing holder (housing, cover) is provided with a magnetite.
By said structure, the present invention can realize following technique effect:
1, the moment condition that only need utilize original mechanism assembly of power-assisted electric vehicle and inter-module to exist naturally can construction be trampled the physical construction that moment is detected.
2, consider the important document that moment forms, in case of necessity and the position of the crank of can arranging in pairs or groups, obtaining value of reading merely of crank torque, and the invalid torsion can avoid both feet to trample the time the interference that may cause.
3, only need read a non-moving and magnitude of voltage non-rotating detecing element and can finish torsion and calculate, so can avoid the issuable unreliability of swinging continuous electrode.
4, with detecing element and circuit package in torque sensing module shell, reach the function of antifouling waterproof by this.
5, rider's pushes pedals makes the five-way axle produce one backward during strength, produce a strength forward by shell fragment bounce-back, so that this first inner sleeve produces the micro-displacement of fixed-direction, and again by the collocation that is arranged at magnetite and sensor, can record the variation in magnetic field, detect the size of trampling torsion.
6, large fluted disc drives the suffered reacting force of chain during by pushes pedals, produce a pulling force backward in five-way axle fulcrum, by measuring this pulling force size backward, can learn the torque value that pushes pedals produces, and the suffered size of pulling force backward of this five-way axle is the principle that sees through a spring-like platform scale, measure the displacement of five-way axle, and calculate according to the spring force coefficient of setting up and deformation quantity and to get, this five-way axle will make sensor produce voltage or current signal because of the displacement of stressed generation, with the controlling signal of this electrical signal as induction, and this controlling signal can determine the driving electric size, to reach the power-assisted driving purposes.
7, can utilize the set adjustment draw ring of flexible member with this bearing holder (housing, cover) of flexible member banding, so that pedal is stepped on amount of power forward the time, this flexible member can make this bearing holder (housing, cover) bounce-back produce the micro-displacement of fixed-direction, and by the collocation of the magnetite and the sensor of bearing holder (housing, cover), can record the variation in magnetic field, detect the size of trampling torsion.
8, this vehicle frame is provided with one first opening and one second opening, this first aperture position is that first aperture position of corresponding outer sleeve is corresponding, the opening of placing in order to the adjustment draw ring that flexible member is provided, and the adjustment draw ring of this flexible member system can be with this bearing holder (housing, cover) of flexible member banding, so that pedal is stepped on amount of power forward the time, this flexible member system can make this bearing holder (housing, cover) bounce-back produce the micro-displacement of fixed-direction; Second aperture position on the vehicle frame is then corresponding with second aperture position of this outer sleeve bottom, so that the sensor that is arranged on the vehicle frame is second opening that can pass this vehicle frame and outer sleeve, corresponding with the set position of magnetite of the magnet ring of axis and bearing holder (housing, cover), so that collocation by the magnetite and the sensor of bearing holder (housing, cover), can record the variation in magnetic field, detect the size of trampling torsion.
When 9, pushes pedals makes the rotation of five-way axle, on this axis sheathed initial point magnet ring and angle magnet ring, wherein this initial point magnet ring system is provided with two magnetic regions (two magnetic regions of beginning and end), and this angle magnet ring system is provided with 48 magnetic regions, magnetic region by contrast initial point magnet ring and angle magnet ring, with the collocation of sensor, can record the change frequency in magnetic field again, detect the size and the crank axle angle position of rotating speed.
Relevant for aforementioned and other technology contents, characteristics and effect of the present invention, in the following detailed description that cooperates with reference to graphic preferred embodiment, can clearly present.
Description of drawings
Fig. 1 is the principle of work synoptic diagram of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 2 A is the comprehensive architecture figure of first embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 2 B is the combination synoptic diagram of first embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 2 C is sensor and the vehicle frame combination elevational schematic view of first embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 2 D is another enforcement illustration of sensor of first embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 2 E is second inner sleeve and the internal axle sleeve combination synoptic diagram of first embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 3 A is the vertical cross section of first embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 3 B is the vertical section exploded view of first embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 4 A is the assembling synoptic diagram of first embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 4 B is the assembling synoptic diagram of first embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 5 is the operation chart of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 6 A is the comprehensive architecture figure of second embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 6 B is the combination synoptic diagram of second embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 6 C is sensor and the vehicle frame elevational schematic view of second embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 6 D is another enforcement illustration of sensor of second embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 6 E is second axle sleeve and the bearing holder (housing, cover) combination synoptic diagram of second embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 7 A is the vertical section exploded view of second embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 7 B is the vertical cross section of second embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 8 A is the assembling synoptic diagram of second embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 8 B is the assembling synoptic diagram of second embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 9 A is the comprehensive architecture figure of the 3rd embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 9 B is the vertical cross section of the 3rd embodiment of crank torque induction installation of the present invention and method for detecting thereof;
Fig. 9 C is the vertical section exploded view of the 3rd embodiment of crank torque induction installation of the present invention and method for detecting thereof; And
Fig. 9 D is second bearing element and second axle sleeve combination synoptic diagram of the 3rd embodiment of crank torque induction installation of the present invention and method for detecting thereof.
Embodiment
See also the principle of work synoptic diagram of Fig. 1 for crank torque induction installation of the present invention and method for detecting thereof, by among Fig. 1 as can be known, when applying downward strength F
p(stampede power) on pedal 101 time, can produce size on the five-way axle center be F
p* Cos Θ
1* l
1Torsion τ
1(τ
1Represent five-way axle torsion, and Θ
1Represent the angle of crank 102 and level), this torsion will apply T in chain 104
1Tension force (chain tension).This tension force size is τ
1/ r, r herein represent large fluted disc 103 radiuses.To be subjected to a tensile force f backward in the five-way axle center as can be known by mechanical analysis
B(pulling force backward that the five-way axle is suffered), this F
BSize is T
1* Cos Θ
2, as the almost horizontal interval scale Θ of upper end chain 104
2(Θ
2Represent the angle of chain and level) very little, this moment F
BCan be approximately T
1, therefore measure F
BCan learn chain 104 tension force, the further anti-torque magnitude of trampling this pedal 101 that pushes away, the present invention promptly utilizes this principle, allows the five-way axle that originally can only rotate, and can spoil the torsion that is produced and makes the five-way axle produce one to be proportional to tensile force f backward to step on
BDisplacement backward, and make the five-way axle produce one by an elastic device to be proportional to the displacement backward of trampling the torsion that is produced, after detecting this displacement size again, with this backward displacement change into electrical signal, can finish the task of torsion detecting, further reach the auxiliary power control of power-assisted electric vehicle.
See also Fig. 2 A and Fig. 2 B three-dimensional structure diagram and combination synoptic diagram for first embodiment of crank torque induction installation of the present invention and method for detecting thereof, by among Fig. 2 A and Fig. 2 B as can be known, this crank torque sensor mainly is provided with on the five-way axle 1, and an annular recessed portion 13 respectively is set between the axis 11 of this five-way axle 1 and the two crank axle linking parts 12, this crank torque sensor mainly comprises:
Two annular recessed portion covered devices 2, all comprised a bearing element 21, one second inner sleeve 22, one has the oval ring plate 23 and an internal axle sleeve 24 of lubricating function, wherein this bearing element 21 is sheathed on this annular recessed portion 13, and sheathed again one second inner sleeve 22 on this bearing element 21, and in the sheathed internal axle sleeve 24 of these second inner sleeve, 22 front ends, these internal axle sleeve 24 external diameters are greater than this second inner sleeve 22, therefore form half arc shaped slits 245 (please refer to Fig. 2 E) between these second inner sleeve, 22 meetings and this internal axle sleeve 24, corresponding half arc shaped slits 245 of the left and right sides then can form half arc space; This internal axle sleeve 24 bulge loop 244 outside the outer rim of axis 11 is provided with in two semicircles scrobicular ring 243 and two semicircles in addition, and this internal axle sleeve 24 has two ring-type raised lines 241 of protrusion towards the outer rim of crank axle linking part 12, forms two location indentations 242 simultaneously;
One axis covered device, one first inner sleeve 31, a shell fragment 32, a magnetite 33, an outer sleeve 34 have been comprised, wherein this first inner sleeve 31 is sheathed on the axis 11 of five-way axle 1, and is fixed between the left and right sides bearing element 21, reaches the purpose with five-way axle 1 interlock; And sheathed outer sleeve 34 on this first inner sleeve 31, and after the internal axle sleeve 24 of the left and right sides all is provided with, again a shell fragment 32 and a magnetite 33 are arranged on first inner sleeve 31, and this shell fragment 32 is positioned between the interior scrobicular ring 243 of the semicircle of two internal axle sleeves 24, and the sheathed again outer sleeve 34 of meeting on this first inner sleeve 31 and the shell fragment 32; This first inner sleeve 31 and outer sleeve 34 bottoms all are provided with an opening 311 in addition, 341 (please refer to Fig. 3 A), and this opening 311,341 with opening 61 positions on the vehicle frame 6 corresponding (please refer to Fig. 2 C), and two internal axle sleeves of positioning convex portion 342,343 meetings and this, 24 set location indentations 242 of these outer sleeve 34 left and right sides combine;
Two outer shafts 41,42 are sheathed on this internal axle sleeve 24 and the outer sleeve 34 separately, to fix this internal axle sleeve 24 and outer sleeve 34 by this outer shaft 41,42.
What deserves to be mentioned is, one sensor 5 is set on this vehicle frame 6, pass the opening 61 of this vehicle frame 6 and the opening 341 of outer sleeve 34, that the position is set is corresponding with the magnetite 33 of first inner sleeve 31, and this sensor 5 is arranged to the change in displacement of a rare energy by induction magnetite 33, and then change the Hall element of the electrical signal sensed, when therefore the pedal 101 that is linked when this crank 102 is stepped on, when this this five-way axle 1 of crank axle linking part 12 meeting interlocks produces micro-displacement, and can be by the collocation of magnetite 33 with sensor 5, can record the variation in magnetic field, the size that detects rider's 9 pushes pedals 101 torsion that produce (please refer to Fig. 2 A, Fig. 2 C, Fig. 4 A, Fig. 4 B and Fig. 5).
What deserves to be mentioned is, can directly install a sensor 51 (seeing also Fig. 2 D) on these outer sleeve 34 outer rims, a sensor element is set, so can increase its installing convenience so can burrow in these vehicle frame 6 outer rims.
What deserves to be mentioned is, between this second inner sleeve 22 and the internal axle sleeve 24, place the oval ring plate 23 of an external diameter greater than these second inner sleeve, 22 external diameters, and the internal diameter of the set ring-type location division 241 of these internal axle sleeve 24 inner edges equals the external diameter of this ellipse ring plate 23, therefore should ellipse ring plate 23 can be held in fully on this ring-type location division 241.
What deserves to be mentioned is, the anti-hole 344 of revolving of this outer sleeve 34, anti-62 positions, hole (please refer to Fig. 2 C) of revolving of revolving 312 positions, hole (please refer to Fig. 3 B) and vehicle frame 6 with first inner sleeve 31 anti-are corresponding, and those anti-holes 344 of revolving, 312,62 can be by an anti-rotary screw 7 (locking part), and then penetrate vehicle frame 6, outer sleeve 34 and inner sleeve 31, so that rider's 9 pushes pedals 101 and when this five-way axle 1 is rotated, can prevent that this inner sleeve 31 and this outer sleeve 34 from arbitrarily rotating, and the inaccurate situation of result that causes detecting takes place.
What deserves to be mentioned is, this shell fragment 32 is arranged between half arc shaped slits 245 that second inner sleeve 22 of the left and right sides and internal axle sleeve 24 form, and this shell fragment 32 is provided with a top brace part 321, this top brace part 321 is in order to directly being held on first inner sleeve, 31 outer rims, so that rider's 9 pushes pedals 101 produce a strength F backward
BThe time, these shell fragment 32 meeting bounce-back generations one are strength F forward
F, so that this first inner sleeve 31 produces the micro-displacement (please refer to Fig. 2 A and Fig. 5) of fixed-direction.
What deserves to be mentioned is, when rider's 9 pushes pedals 101, produce one in the five-way pipe spreader of five-way axle 1 meeting on script vehicle frame 6 and be proportional to the displacement backward of trampling torsion, the displacement meeting of this five-way axle 1 drives this inner sleeve 31 synchronously, so that this permanet magnet 33 produces synchronous shift, therefore magnetite 33 will produce a relative displacement with a Hall element that is fixed on the vehicle frame 6 five-way pipe spreaders, and then change the electrical signal that Hall element is sensed, that is we can draw an electrical signal that changes along with trampling torsion, and provide required auxiliary power (please refer to Fig. 2 A and Fig. 5) by the electrical signal that reads this Hall element with CD-ROM drive motor.
See also Fig. 6 A and Fig. 6 B three-dimensional structure diagram and combination synoptic diagram for second embodiment of crank torque induction installation of the present invention and method for detecting thereof, by among Fig. 6 A and Fig. 6 B as can be known, between the axis 201 of this five-way axle 20 and the first crank axle linking part 202 annular recessed portion 204 is set, and and be provided with an extension 205 between the second crank axle linking part 203, this crank torque sensing apparatus mainly comprises:
One annular recessed portion covered device 30 has comprised a bearing element 301 and a clasp 302, wherein can sheathed this bearing element 301 on this annular recessed portion, and between this bearing element 301 and the first crank axle linking part 202 a sheathed clasp 302;
Two magnet rings, be respectively initial point magnet ring 401 and angle magnet ring 402, be sheathed on separately on the axis 201 of this five-way axle 20, wherein this initial point magnet ring 401 is provided with two magnetic regions (two magnetic regions of beginning and end), and this angle magnet ring 402 is provided with 48 magnetic regions, by the magnetic region of contrast initial point magnet ring 401 and angle magnet ring 402, can judge the size and the crank axle angle position of rotating speed;
One extension covered device 50, be sheathed on the extension 205 of this five-way axle 20, wherein this extension covered device 50 has comprised a clutch shaft bearing external member 501, one has the second bearing external member 502 and one the 3rd bearing external member 503 of magnetite 5023, this clutch shaft bearing external member 501 and the 3rd bearing external member 503 each have a ring-type protuberance 5011 are set, 5031, and there is an annular inner edge 5021 (please refer to Fig. 7 B) these second bearing element, 502 inside, so this ring- type protuberance 5011,5031 can insert the left and right sides of annular inner edge 5021, be positioned on the extension 205 to finish driving fit, and can a sheathed flexible member 5022 and a magnetite 5023 on these second bearing element, 502 outer rims, wherein be provided with one on this flexible member 5022 and adjust draw ring 50221;
One outer sleeve 70, can be with these two magnet rings 401,402 and extension covered device 50 wherein sheathed, and 70 pairs of this outer sleeves should flexible member 5022 adjustment draw ring 50221 and the magnetite 5023 of this second bearing element 502, be provided with an opening 701 separately, 702 (please refer to Fig. 7 A), and this outer sleeve 70 can directly be held on the bearing element 30 towards the binding sleeve 703 of bearing element 301, this outer sleeve 70 sheathed one second axle sleeve 802 between the second crank axle linking part 203 in addition;
One first axle sleeve 801 be sheathed on the binding sleeve 703 of bearing element 30 and outer sleeve 70, and this bearing element 30 can be held on the set ring-type location division 8011 of first axle sleeve, 801 inner edges;
One second axle sleeve 802, this second axle sleeve 802 outer rim of sleeve 70 outward has the ring-type raised line 8021 of protrusion, and the 3rd bearing external member 503 of this second axle sleeve 802 and this extension covered device 50 mutually combines, and the internal diameter of this second axle sleeve 802 is greater than the external diameter in the 3rd bearing external member 503 outsides, when the adjustment draw ring 50221 of this flexible member 5022 is with this second bearing element 502 of flexible member 5022 bandings in addition, can produce half arc shaped slits 8027 (please refer to Fig. 6 E) between this second bearing element 502 and second axle sleeve 802; This second axle sleeve 802 passes the second crank axle linking part 203 towards the inner edge of the second crank axle linking part 203 with an oil sealing element 90 in addition, is sheathed in second axle sleeve 802.
What deserves to be mentioned is, the external diameter of the axis 201 of this five-way axle 20 is greater than the external diameter of this annular recessed portion 204, and this annular recessed portion 204 is oblique structures (pyramidal structure) (also can be designed to this axis 201 to 202 diminishing oblique structures of first crank) that amplified gradually to 202 on first crank by axis 201, the external diameter of this extension 205 is less than the external diameter of axis 201 in addition, and with the external diameter size identical (please refer to Fig. 7 A and Fig. 7 B) of the second crank axle linking part 203.
What deserves to be mentioned is, be provided with four openings 601 on this vehicle frame 60,602,603,604, one of them opening 603 of placing for the adjustment draw ring 50221 that this flexible member 5022 is provided (corresponding to opening 701 positions that should outer sleeve 70), and the adjustment draw ring 50221 of this flexible member 5022 can be adjusted this second bearing element 502 of these flexible member 5022 bandings and uses is so that rider's 9 pushes pedals 101 make five-way axle 20 produce a strength F backward
BThe time, actuating sleeve is located at the fluted disc 10 of this second crank axle linking part 203 in the lump, and these flexible member 5022 meeting bounce-back generations one are strength F forward
F, so that this extension covered device 50 produces the micro-displacement of fixed-direction;
Opening 604 positions on another vehicle frame are then corresponding with opening 702 positions of these outer sleeve 70 bottoms, so that (this sensor 605 is arranged to a rare energy by induction magnetite 5023 to be arranged at sensor 605 on the vehicle frame 60, the change in displacement of initial point magnet ring 401 and angle magnet ring 402, and then change the Hall element of the electrical signal sensed) can pass the opening 702 of this vehicle frame 60 and outer sleeve 70, corresponding with the magnetite 5023 set positions of the magnet ring (initial point magnet ring 401 and angle magnet ring 402) of axis 201 and second bearing element 502, so that by the magnetite 5023 of this second bearing element 502 and the collocation of sensor 605, can record the variation in magnetic field, detect the size of trampling torsion; In addition when pushes pedals 101 makes five-way axle 20 rotation, on this axis 201 sheathed two magnet rings 401,402, by magnet ring 401,402 with the collocation of sensor 605, can record the change frequency in magnetic field, detect the size (please refer to Fig. 5, Fig. 6 C, Fig. 7 A, Fig. 8 A and Fig. 8 B) of rotating speed.
What deserves to be mentioned is, can directly install a sensor 52 (please refer to Fig. 6 D) on these outer sleeve 70 outer rims, a sensor element is set, so can increase its installing convenience so can burrow in these vehicle frame 6 outer rims.
What deserves to be mentioned is, two pilot holes 8022 of this second axle sleeve 802 and the pilot hole 601 of vehicle frame 60,602 positions are corresponding, and those pilot holes 8022,601,602 can be by a pilot pin 8023, and then penetrate the vehicle frame 60 and second axle sleeve 802, so that when preventing that rider's 9 pushes pedals from making these five-way axle 20 rotations, can prevent the 802 related rotations of second axle sleeve, and then influence the free space that the extension covered device 50 on the five-way axle 20 moves backward, and (please refer to Fig. 5, Fig. 6 A, Fig. 6 C and Fig. 7 A) takes place in the inaccurate situation of result that causes detecting.
See also Fig. 9 A and Fig. 9 B three-dimensional structure diagram and combination synoptic diagram for the 3rd embodiment of crank torque induction installation of the present invention and method for detecting thereof, by among Fig. 9 A and Fig. 9 B as can be known, be second axle sleeve 802 of this extension covered device 50 and collocation thereof with the part of the second embodiment difference maximum, and extension covered device 50 is sheathed on the extension 206 of this five-way axle 20 among the 3rd embodiment, wherein this extension covered device 50 has comprised two ring-type steel ball elements 504, one bearing holder (housing, cover) 505 and a flexible member 506, wherein these two ring-type steel ball elements 504 are sheathed on the extension 206 of this five-way axle 20, and these two ring-type steel ball elements 504 outer sheathed again one have the bearing holder (housing, cover) 505 of magnetite 509, the outer rim of this bearing holder (housing, cover) 505 is provided with an annular recessed portion 507 (please refer to Fig. 9 B) and two positioning convex portion 508 in addition, and be arranged with flexible member 506 on this annular recessed portion 507, and an adjustment draw ring 5061 is set on this flexible member 506.
What deserves to be mentioned is, this outer sleeve 70 can be wherein sheathed with these two magnet rings 401,402, bearing holder (housing, cover) 505 and flexible member 506, and the adjustment draw ring 5061 that 70 pairs of this outer sleeves should flexible member 506 and the magnetite 509 of this bearing holder (housing, cover) 505, be provided with an opening 701,702 separately.
What deserves to be mentioned is, this second axle sleeve 802 outer rim of sleeve 70 outward has two ring-type raised lines 8024 of protrusion, form two location indentations 8025 simultaneously, therefore two location indentations 8025 of two positioning convex portion 508 of this extension covered device 50 and second axle sleeve 802 mutually combine, and the internal diameter of this second axle sleeve 802 can produce half arc shaped slits 8027 (please refer to Fig. 9 D) greater than the external diameter of this extension covered device 50.
What deserves to be mentioned is, this second axle sleeve 802 is towards the inner edge of the second crank axle linking part 203, be provided with a ring-type location division 8026 (please refer to Fig. 9 C), and again an oil sealing element 90 passed the second crank axle linking part 203, be sheathed on the ring-type location division 8026 of second axle sleeve 802.
Crank torque induction installation provided by the present invention and method for detecting thereof when comparing mutually with other located by prior art, have more and get the row advantage ready:
1. crank torque induction installation of the present invention and method for detecting thereof are the moment condition of utilizing original mechanism assembly of power-assisted electric vehicle and inter-module to exist naturally, the physical construction of construction moment detecting, simple structureization.
2. crank torque induction installation of the present invention and method for detecting thereof only need read a non-moving and magnitude of voltage non-rotating detecing element and can finish torsion and calculate, so can save the issuable unreliability of swinging continuous electrode.
3. crank torque induction installation of the present invention and method for detecting thereof can use linear hall element (sensing element), make up contactless torsion checking system.
4. crank torque induction installation of the present invention and method for detecting thereof, have that a member is simple, assembling easily and the small and exquisite advantage of volume, and need not revise frame geometry this torque sensor can be installed.
By the above detailed description of preferred embodiments, hope can be known description feature of the present invention and spirit more, and is not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category of claim of being arranged in of various changes and tool equality institute of the present invention desire application.
Claims (19)
1. crank torque method for detecting, the torsion that is produced to trample makes five-way axle generation one strength of displacement backward, and make the five-way axle produce one by an elastic device to be proportional to the displacement backward of trampling the torsion that is produced, detect this displacement size again and can learn and trample the torsion that is produced.
2. crank torque induction installation, wherein this crank torque induction installation of being located on the five-way axle is installed in the vehicle frame, and an annular recessed portion respectively is set between the axis of this five-way axle and the two crank axle linking parts, it is characterized in that this crank torque induction installation comprises:
Two annular recessed portion covered devices are sheathed on the annular recessed portion respectively, and interconnect with the axis covered device that is sheathed on axis, and these two annular recessed portion covered devices all comprise a bearing element, one second inner sleeve, a ring plate and an internal axle sleeve;
One axis covered device, be sheathed on the axis, one first inner sleeve, a shell fragment, a magnetite and an outer sleeve have been comprised, and a sheathed separately outer shaft on axis covered device and this two annular recessed portion covered devices, so that it is these two annular recessed portion covered devices and axis covered device are fixing simultaneously, this shell fragment and magnetite are arranged on first inner sleeve in addition, and this shell fragment is provided with a top brace part, and this top brace part directly is held on the first inner sleeve outer rim;
One sensor is arranged on vehicle frame or the outer sleeve, and that the position is set is corresponding with magnetite;
When rider's pushes pedals, this shell fragment can make the micro-displacement of this first inner sleeve bounce-back generation fixed-direction, and again by the collocation that is arranged at magnetite and sensor, in order to record the variation in magnetic field, to detect the size of trampling torsion.
3. crank torque induction installation as claimed in claim 2, it is characterized in that this bearing element is sheathed on this annular recessed portion, and sheathed this second inner sleeve on this bearing element, and place this ring plate in this second inner sleeve front end, this internal axle sleeve then is sheathed on this second inner sleeve and the ring plate.
4. crank torque induction installation as claimed in claim 3 is characterized in that, this ring plate is an ellipse, and the external diameter of this ring plate is greater than second inner sleeve, and the internal diameter of the set ring-type location division of this internal axle sleeve inner edge equals the external diameter of this ellipse ring plate.
5. crank torque induction installation as claimed in claim 4 is characterized in that, forms half arc shaped slits between this second inner sleeve and this internal axle sleeve.
6. crank torque induction installation as claimed in claim 2 is characterized in that, this first inner sleeve is sheathed on the axis, and this shell fragment is positioned between the internal axle sleeve, and sheathed outer sleeve on this first inner sleeve and the shell fragment.
7. crank torque induction installation as claimed in claim 2, it is characterized in that, this first inner sleeve and outer sleeve all are provided with an opening, and these two openings are corresponding with the aperture position on the vehicle frame, so that sensor can pass the opening of this vehicle frame and the opening of outer sleeve, that the position is set is corresponding with the magnetite of first inner sleeve.
8. crank torque induction installation as claimed in claim 2, it is characterized in that, this outer sleeve, first inner sleeve and vehicle frame correspondence separately are provided with an anti-hole of revolving, and should anti-revolve the hole again by a locking part, and then penetrate the anti-of outer sleeve, first inner sleeve and vehicle frame and revolve in the hole.
9. crank torque induction installation as claimed in claim 2 is characterized in that, this sensor is arranged to a rare energy by the change in displacement of induction magnetite and then the Hall element of the electrical signal that change is sensed.
10. crank torque induction installation, wherein this crank torque induction installation of being located on the five-way axle is installed in the vehicle frame, and an annular recessed portion is set between the axis of this five-way axle and the first crank axle linking part, and and be provided with an extension between the second crank axle linking part, and this crank torque induction installation comprises:
One annular recessed portion covered device is sheathed on the annular recessed portion, and this annular recessed portion covered device has comprised a bearing element and a clasp;
A plurality of magnet rings are sheathed on the axis, and these a plurality of magnet rings in order to record the change frequency in magnetic field, detect the size of rotating speed by the collocation of magnet ring and sensor;
One extension covered device, be sheathed on the extension, this extension covered device comprises the second bearing external member and one the 3rd bearing external member that a clutch shaft bearing external member, has magnetite, this clutch shaft bearing external member and the 3rd bearing external member left and right sides of inserting the second bearing external member wherein, be positioned on the extension to finish driving fit, and a sheathed flexible member and a magnetite on this second bearing external member outer rim;
One outer sleeve, this outer sleeve is wherein sheathed with a plurality of magnet rings, extension covered device and flexible member;
Two axle sleeves have comprised first axle sleeve and one second axle sleeve, and wherein this first axle sleeve directly is sheathed on annular recessed portion covered device and outer sleeve one end, and this second axle sleeve then is sheathed on the outer sleeve other end;
One sensor is arranged on vehicle frame or the outer sleeve, and that the position is set is corresponding with magnetite;
Therefore when rider's pushes pedals, this flexible member can make this extension covered device bounce-back produce the micro-displacement of fixed-direction, and by the collocation of the magnetite and the sensor of this extension covered device, in order to recording the variation in magnetic field, and a plurality of magnet ring detects the size of trampling torsion and rotating speed because of the changes of magnetic field frequency that the rotation of five-way axle produces.
11. crank torque induction installation as claimed in claim 10 is characterized in that this bearing element is sheathed on the annular recessed portion, and between this bearing element and the first crank axle linking part a sheathed clasp.
12. crank torque induction installation as claimed in claim 10 is characterized in that, this flexible member is provided with one and adjusts draw ring, in order to the second bearing external member with this extension covered device of flexible member banding.
13. crank torque induction installation as claimed in claim 10 is characterized in that, the external diameter of this axis is greater than the external diameter of this annular recessed portion, and this annular recessed portion be one by in the oblique structure that amplifies gradually of the axial first crank axle linking part.
14. crank torque induction installation as claimed in claim 10 is characterized in that, the external diameter of this axis is greater than the external diameter of this annular recessed portion, and this annular recessed portion be one by in the diminishing oblique structure of the axial first crank axle linking part.
15. crank torque induction installation as claimed in claim 10, it is characterized in that, four openings are set on this vehicle frame, the opening that one of them is placed for the adjustment draw ring that flexible member is provided, another aperture position is then corresponding with the aperture position of this outer sleeve, so that it is be arranged at the opening that sensor on the vehicle frame passes this vehicle frame and outer sleeve, corresponding with magnet ring and the set position of magnetite.
16. crank torque induction installation as claimed in claim 10 is characterized in that, this second axle sleeve and vehicle frame, and correspondence is provided with at least one pilot hole separately, and a pilot pin penetrates in the vehicle frame and second axle sleeve by this pilot hole.
17. crank torque induction installation as claimed in claim 10 is characterized in that, can place an oil sealing element in this second axle sleeve, this oil sealing element passes the second crank axle linking part, and by the pilot pin that penetrates second axle sleeve and vehicle frame, positions.
18. crank torque induction installation as claimed in claim 10 is characterized in that, this sensor is arranged to the change in displacement of a rare energy by induction magnetite and magnet ring, and then changes the Hall element of the electrical signal of being sensed.
19. crank torque induction installation as claimed in claim 10, it is characterized in that, this extension covered device has comprised many ring-type steel ball elements, a bearing holder (housing, cover) and flexible members, and wherein this flexible member is sheathed on the bearing holder (housing, cover), and this bearing holder (housing, cover) is provided with a magnetite.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010204844XA CN102297736B (en) | 2010-06-22 | 2010-06-22 | Crank torsion sensing device |
| PCT/EP2011/059748 WO2011154546A1 (en) | 2010-06-10 | 2011-06-10 | An axle bearing assembly |
| EP11725920.0A EP2580111A1 (en) | 2010-06-10 | 2011-06-10 | An axle bearing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010204844XA CN102297736B (en) | 2010-06-22 | 2010-06-22 | Crank torsion sensing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102297736A true CN102297736A (en) | 2011-12-28 |
| CN102297736B CN102297736B (en) | 2013-12-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010204844XA Expired - Fee Related CN102297736B (en) | 2010-06-10 | 2010-06-22 | Crank torsion sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102297736B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103661773A (en) * | 2013-12-26 | 2014-03-26 | 苏州德佳物联科技有限公司 | Central system based on wireless torque detection |
| CN104044682A (en) * | 2014-06-12 | 2014-09-17 | 苏州达方电子有限公司 | Revolving shaft mechanism |
| CN104773254A (en) * | 2014-01-09 | 2015-07-15 | 刘俊祥 | Driving assembly of electric bicycle |
| CN104837722A (en) * | 2012-12-28 | 2015-08-12 | 松下知识产权经营株式会社 | Electric bicycle |
| WO2015149626A1 (en) * | 2014-04-03 | 2015-10-08 | 昆山攀登变频电子科技有限公司 | Apparatus for sensing electric vehicle mechanics |
| CN106908175A (en) * | 2015-12-23 | 2017-06-30 | 健腾精密机电股份有限公司 | Axial rotation type torque sensor |
| CN107850501A (en) * | 2015-07-23 | 2018-03-27 | 罗伯特·博世有限公司 | For measuring measurement assembly, crank driving mechanism and the vehicle of the torque on axle |
| US9969461B2 (en) | 2013-12-26 | 2018-05-15 | Suzhou Tergar Iot Technology Co., Ltd | Center-mounted control system of bicycle |
| CN108474700A (en) * | 2016-02-01 | 2018-08-31 | 舍弗勒技术股份两合公司 | Measuring device and method for determining the operating parameter on axis |
| CN112113689A (en) * | 2020-09-15 | 2020-12-22 | 智能移动机器人(中山)研究院 | Spring plantar sensor system based on Hall |
| WO2021008281A1 (en) * | 2019-07-12 | 2021-01-21 | 太仓市悦博电动科技有限公司 | Torque sensor of central motor |
| CN112572683A (en) * | 2020-12-09 | 2021-03-30 | 宁波麦思动力系统有限公司 | Bicycle torque transmission mechanism and system and electric power-assisted bicycle |
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| CN104044682A (en) * | 2014-06-12 | 2014-09-17 | 苏州达方电子有限公司 | Revolving shaft mechanism |
| CN104044682B (en) * | 2014-06-12 | 2016-09-07 | 苏州达方电子有限公司 | Rotating shaft mechanism |
| CN107850501A (en) * | 2015-07-23 | 2018-03-27 | 罗伯特·博世有限公司 | For measuring measurement assembly, crank driving mechanism and the vehicle of the torque on axle |
| CN106908175A (en) * | 2015-12-23 | 2017-06-30 | 健腾精密机电股份有限公司 | Axial rotation type torque sensor |
| CN106908175B (en) * | 2015-12-23 | 2019-10-11 | 健腾精密机电股份有限公司 | Axial rotation type torque sensor |
| CN108474700A (en) * | 2016-02-01 | 2018-08-31 | 舍弗勒技术股份两合公司 | Measuring device and method for determining the operating parameter on axis |
| WO2021008281A1 (en) * | 2019-07-12 | 2021-01-21 | 太仓市悦博电动科技有限公司 | Torque sensor of central motor |
| CN112113689A (en) * | 2020-09-15 | 2020-12-22 | 智能移动机器人(中山)研究院 | Spring plantar sensor system based on Hall |
| CN112572683A (en) * | 2020-12-09 | 2021-03-30 | 宁波麦思动力系统有限公司 | Bicycle torque transmission mechanism and system and electric power-assisted bicycle |
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| CN102297736B (en) | 2013-12-04 |
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