CN103786523A - Rotary shaft mechanism - Google Patents
Rotary shaft mechanism Download PDFInfo
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- CN103786523A CN103786523A CN201410039779.8A CN201410039779A CN103786523A CN 103786523 A CN103786523 A CN 103786523A CN 201410039779 A CN201410039779 A CN 201410039779A CN 103786523 A CN103786523 A CN 103786523A
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- rotating shaft
- bearing
- bearing seat
- strain gage
- sagittal plane
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Abstract
The invention provides a rotary shaft mechanism capable of being arranged in a frame. The rotary shaft mechanism comprises a rotary shaft, a bearing, a bearing seat and a strainmeter. The rotary shaft is used for receiving applied moment so as to rotate around the axial direction. The bearing is connected with the rotary shaft in a sleeved mode to reduce friction resistance of the rotary shaft rotating around the axial direction. The bearing seat is arranged between the frame and the bearing, used for accommodating and supporting the bearing and provided with a radial plane in the radial direction of the bearing. The strainmeter is arranged on the radial plane of the bearing seat. When the rotary shaft is driven to rotate by the applied moment, the applied moment is transferred through the rotary shaft and the bearing, the outer side of the bearing seat abuts against the frame to enable the radial plane on the bearing seat to produce deformation amount, and the strainmeter measures the deformation amount. The rotary shaft mechanism of a bicycle device utilizes treading force exerted by the strainmeter onto a pedal and further effectively controls an auxiliary power source.
Description
Technical field
The present invention is about a kind of rotating shaft mechanism, especially about a kind of rotating shaft mechanism of bicycle with detecting pedal force size that be applied to.
Background technology
Present bicycle has changed one of instrument of promoting leisure health life into from walking-replacing tool originally.But not everyone physical efficiency can be born the route of long-range or difficult climbing section, the Electrical Bicycle therefore with auxiliary power arises at the historic moment.
General Electrical Bicycle utilizes electro-motor as auxiliary power resources, the strength being spent while trampling to reduce.Electrical Bicycle, according to the size of stampede power, utilizes motor to increase driving force, can make on the one hand bicycle knight reach the effect of motion, when running into climbing simultaneously or feeling inadequate, also can provide auxiliary power.
But, how effectively measuring bicycle knight and bestow the pedal force of pedal and then required auxiliary power is provided, existing Electrical Bicycle can't be realized, and therefore, this problem becomes one of important now R&D direction.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of rotating shaft mechanism, its deflection by the direct sensitive axis bearing of strain gage is effectively to judge the size of applied moment, thereby the required auxiliary power providing is provided, in prior art, is difficult to reach to solve the technical matters that effective measurement bicycle knight bestows the pedal force of pedal and then required auxiliary power is provided.
The invention provides a kind of rotating shaft mechanism, be arranged in framework, this rotating shaft mechanism comprises: rotating shaft, for accepting applied moment with around axially rotating; Bearing, is socketed on this rotating shaft, to lower the friction drag of this rotating shaft when this axial rotation; Bearing seat, is arranged between this framework and this bearing, and this bearing seat is installed with and supports this bearing, and this bearing seat has along bearing sagittal plane radially, and this bearing seat outside is connected to this framework; And strain gage, be arranged at this bearing seat along on this bearing this sagittal plane radially; Wherein, in the time that this applied moment is rotated this rotating shaft, this applied moment is transmitted via this rotating shaft and this bearing, makes this sagittal plane on this bearing seat deform and produce deflection, and this strain gage measures this deflection.
As further alternative technical scheme, this bearing seat is ring body, and this bearing is located in the ring heart space of this ring body, and the normal direction of this sagittal plane perpendicular to this bearing radially, and is located in the position in this ring heart space corresponding to this bearing along this sagittal plane.
As further alternative technical scheme, this bearing seat has groove, and this sagittal plane is arranged in this groove, and the notch of this groove is towards being parallel to this axial direction, so that this strain gage is axially located in this groove from this notch along this.
As further alternative technical scheme, this bearing has bearing thickness and this bearing seat has the first anchor ring, this groove extends into this ring body one degree of depth from this first anchor ring, and the position of this degree of depth these bearing thickness central authorities while being located in this ring heart space corresponding to this bearing.
As further alternative technical scheme, the trough that this groove comprises storage tank and is communicated with this storage tank, this strain gage also comprises signal wire (SW), and this trough extends and supplies to lay this signal wire (SW) to export this deflection that measures gained along the circumferencial direction of this ring body.
As further alternative technical scheme, this ring body also comprises barricade, this dams setting radially extends towards this rotating shaft in this first anchor ring and along this bearing, wherein this rotating shaft mechanism also comprises locating part, this locating part is fixed on this rotating shaft, to coordinate this barricade of this bearing seat to limit this bearing along this axial displacement.
As further alternative technical scheme, this bearing seat have at least one thinning district contiguous this to plane, wherein this ring body is less than this ring body in the radial wall thickness of the position of this sagittal plane in the radial wall thickness of this thinning zone position.
As further alternative technical scheme, this strain gage also comprises signal wire (SW), this bearing seat also has trough and is communicated with this thinning district, and the outer ring surface that this trough is formed at this ring body extends and supplies to lay this signal wire (SW) to export this deflection that measures gained along the circumferencial direction of this ring body.
As further alternative technical scheme, this bearing seat also has positioning groove, and this positioning groove is formed at the circumferential surface of this ring body and extends axially along this, the telltale mark when being connected with this framework as this bearing seat.
As further alternative technical scheme, this rotating shaft mechanism also comprises support shell and location hitching post, this support shell has extension positioning groove, in the time that this bearing seat and this support shell are positioned predetermined angle, this location hitching post can be crossed over this bearing seat and this support shell, is arranged in this positioning groove and this extension positioning groove simultaneously.
As further alternative technical scheme, this rotating shaft mechanism also comprises support shell and circuit unit, and this support shell is around this rotating shaft and connect this bearing seat, and this circuit unit is arranged in this support shell.
As further alternative technical scheme, this circuit unit is electrically connected auxiliary power source, and this deflection that this circuit unit measures according to this strain gage, controls this auxiliary power source.
As further alternative technical scheme, this circuit unit is positioned at the top of this rotating shaft, accumulates on this circuit unit place to reduce environment aqueous vapor.
As further alternative technical scheme, this rotating shaft mechanism also comprises a plurality of magnet rings, and these a plurality of magnet rings are fixed on this rotating shaft, to measure the rotating speed of this rotating shaft and the application of force direction of this applied moment.
As further alternative technical scheme, this rotating shaft mechanism also comprises pair of pedals, this is connected in this rotating shaft pedal, user tramples this downwards pedal is applied to this applied moment, wherein this strain gage is arranged at the below of this rotating shaft, while trampling this to pedal downwards in order to detect this user corresponding this deflection occurring.
The present invention also provides a kind of rotating shaft mechanism, is arranged in framework, and this rotating shaft mechanism comprises: rotating shaft, for accepting applied moment with around axially rotating; Left bearing, is socketed on the left side of this rotating shaft; Right bearing, is socketed on the right-hand part of this rotating shaft, and this left bearing and this right bearing reduce the friction drag of this rotating shaft in the time of this axial rotation jointly; Left shaft holder, is arranged between this framework and this left bearing, and for being installed with and supporting this left bearing, this left shaft holder has along left bearing left sagittal plane radially, and this left shaft holder outside is connected to this framework; Left strain gage, is arranged on this this left sagittal plane; Right bearing seat, is arranged between this framework and this right bearing, and for being installed with and supporting this right bearing, this right bearing seat has along right bearing right sagittal plane radially, and this right bearing seat outside is connected to this framework; And right strain gage, be arranged on this right sagittal plane; Wherein in the time that this applied moment is rotated this rotating shaft, this applied moment is transmitted via this rotating shaft, this left bearing and this right bearing, makes this left sagittal plane that left deflection occur, and makes this right sagittal plane that right deflection occur, this left strain gage measures this left deflection, and this right strain gage measures this right distortion.
As further alternative technical scheme, this rotating shaft mechanism also comprises left-hand tread plate and right-hand tread plate, this left-hand tread plate is connected in the left end point of this rotating shaft, and this right-hand tread plate is connected in the right endpoint of this rotating shaft, user tramples this left-hand tread plate and this right-hand tread plate downwards and applies this applied moment, this left strain gage and this right strain gage are all arranged at the below of this rotating shaft, this left strain gage measures this user while trampling this left-hand tread plate downwards corresponding this left deflection occurring, this right deflection of the corresponding generation of institute while trampling this right-hand tread plate downwards that this right strain gage measures this user.
As further alternative technical scheme, this rotating shaft mechanism also comprises support shell and circuit unit, this support shell around this rotating shaft and be arranged at this left shaft holder and this right bearing seat between, this circuit unit is arranged in this support shell.
As further alternative technical scheme, this circuit unit is electrically connected auxiliary power source, and this right deflection that this left deflection that this circuit unit measures according to this left strain gage and this right strain gage measure, controls this auxiliary power source.
Compared with prior art, the rotating shaft mechanism of bicycle device of the present invention, it utilizes strain gage to measure and puts on the pedal force of pedal, and then effectively controls auxiliary power source.
Accompanying drawing explanation
Figure 1A is the schematic diagram that the rotating shaft mechanism of one embodiment of the invention is installed in bicycle device.
Figure 1B is the partial schematic diagram that the rotating shaft mechanism of Figure 1A is installed in the framework of bicycle device.
Fig. 2 is the exploded view of the rotating shaft mechanism of one embodiment of the invention.
Fig. 3 A to Fig. 3 D is the different visual angles schematic diagram of the bearing seat of the present invention's one illustrative embodiments.
Fig. 3 E is the section-drawing of Fig. 3 C along D-D direction.
Fig. 4 A and Fig. 4 B are before the support shell of the present invention's one illustrative embodiments and the assembling of bearing seat and the rear schematic diagram of assembling.
Fig. 5 A to Fig. 5 C is the different visual angles schematic diagram of the bearing seat of another illustrative embodiments of the present invention.
The specific embodiment
For making that object of the present invention, structure, feature and function thereof are had to further understanding, hereby coordinate embodiment to be described in detail as follows.
The invention provides a kind of rotating shaft mechanism, it can be applicable to engine installation to measure the size of applied moment, especially can be applicable to have the engine installation of auxiliary power source, accurately to measure the size of applied moment, and then effectively controls auxiliary power source.Particularly, utilize pedal force to produce the engine installation of power in for example better can be of the engine installation described in this, it is including but not limited to Electrical Bicycle etc.Below the embodiment that is installed on bicycle device with rotating shaft mechanism of the present invention is illustrated, but not as limit.
Figure 1A is the schematic diagram that the rotating shaft mechanism of one embodiment of the invention is installed in bicycle device, and Figure 1B rotating shaft mechanism that is Figure 1A is installed in the partial schematic diagram of the framework of bicycle device.As shown in Figure 1A and 1B, rotating shaft mechanism 10 of the present invention can be applicable to bicycle device, and preferred application is in the bicycle device 1 with auxiliary power source 50.When rotating shaft mechanism 10 of the present invention is applied to bicycle device 1, be arranged in the framework 20 of bicycle device 1, that is be installed in the Five-way tube 22 of bicycle frame 20, and rotating shaft mechanism 10 has two ends, one end connects a suite handle 30 and pedal 32, the other end connects another suite handle 30 and pedal 32, is beneficial to that user applies applied moment in rotating shaft mechanism 10 and produces power.Below with reference to graphic detailed description rotating shaft mechanism 10 of the present invention.
Fig. 2 is the exploded view of the rotating shaft mechanism of one embodiment of the invention.As shown in Figure 2, rotating shaft mechanism 10 comprises rotating shaft 100, bearing 200, bearing seat 300 and strain gage 400.Should be noted at this, when rotating shaft mechanism 10 is applied to bicycle device 1, corresponding to left and right castor stream pushes pedals 32, to apply applied moment in rotating shaft 100, rotating shaft 100 two ends are respectively equipped with corresponding bearing 200, bearing seat 300 and strain gage 400.In after only describe with the assembly of one end, the other end has similar configuration, repeats no more.In addition, rotating shaft mechanism 10 also comprises for connecting, support or the assembly of other effect, such as support shell 500, thread barrel 600, locating part 700, magnet ring 800 and circuit unit 900 etc., in after be described in further detail.
Rotating shaft 100 is for accepting applied moment to rotate around axial A.That is, the two ends of rotating shaft 100 connect the crank 30 of bicycle device 1, and pedal 32 connecting cranks 30, trample and then provide applied moment in rotating shaft 100 by crank 30 for user, and rotating shaft 100 is rotated around axial A (being the long axis direction of rotating shaft 100).Bearing 200 is socketed on rotating shaft 100, to lower the friction drag of rotating shaft 100 in the time that axial A rotates.Bearing 200 can be any known bearing arrangement, such as ball bearing of main shaft, needle bearing etc., wherein again with needle bearing for better, but not as limit.In this embodiment, two bearings 200 are each side set, wherein two bearings 200 vertically A be arranged side by side.But, according to different design requirements, in other embodiment, two bearings 200 can be integrated into single bearing 200, or plural bearing 200 is set, be not limited with shown in embodiment.
As shown in Fig. 3 A to Fig. 3 D, bearing seat 300 is ring body, and bearing 200 is located in the ring heart space 300A of ring body.Particularly, bearing seat 300 is for having the ring body of the first anchor ring 302 and the second anchor ring 304, and the first anchor ring 302 is relative with the second anchor ring 304, wherein encircles the space of heart space 300A for being surrounded by ring body between the first anchor ring 302 and the second anchor ring 304.In this embodiment, bearing seat 300 has groove 320, and sagittal plane 310 is arranged in groove 320, and sagittal plane 310 is preferably the base plane of groove 320.Particularly, groove 320 extends into ring body from the first anchor ring 302 of ring body, and the notch 320a of groove 320 is towards the direction that is parallel to axial A so that strain gage 400 vertically A be located in groove 320 from notch 320a.Moreover, as shown in Fig. 3 A and 3C, the trough 324 that groove 320 comprises storage tank 322 and is communicated with storage tank 322, wherein trough 324 extends the first anchor ring 320 and supplies the signal wire (SW) 420 of laying strain gage 400 to export the deflection that measures gained along the circumferencial direction C of ring body.That is as shown in Figure 2, strain gage 400 comprises sensing body 410 and connects the signal wire (SW) 420 of sensing body 410.Strain gage 400 can be any suitable known strain gage, and it is generally made up of insulating substrate and metal sensitive grid.The sensing body 410 of strain gage 400 can for example, anchor on sagittal plane 310 by adhesive (502 glue), and in the time that bearing seat 300 produces distortion, sensitive grid is distortion thereupon also, and therefore the resistance value of sensitive grid can produce corresponding variation.Can measure this change in resistance amount by Wheatstone bridge, then the strain gage coefficient of indicating while producing by strain gage can convert the resistance change measuring to actual strain value, thereby determine the deflection of bearing seat 300.
In this embodiment, as the local amplifier section of Fig. 3 B(Fig. 3 A) and the section part of Fig. 3 C as shown in, the vertically extending bottom 322a of storage tank 322 is as sagittal plane 310, therefore the sensing body 410 of strain gage 400 is arranged at the bottom 322a of storage tank 322, and the signal wire (SW) 420 of strain gage 400 along the circumferential direction C be laid in trough 324, shown in junction circuit assembly 900(Fig. 2).Should be noted at this, in the time that rotating shaft mechanism 10 is arranged at bicycle frame 20, corresponding to the application of force direction of pedal force, the better below that is arranged at rotating shaft 100 of strain gage 400, when detecting the downward pushes pedals 32 of user the corresponding deflection occurring.That is installing is when rotating shaft mechanism 10, the mode that is arranged in rotating shaft 100 belows with the bottom 322a (that is sagittal plane 310) of the storage tank 322 of bearing seat 300 is installed in the Five-way tube 22 of framework 20.Should be noted at this, in other embodiment, according to different designs demand, storage tank 322 be parallel to bearing radially the side 322b of B also can be used as the plane that strain gage 400 is set, be not limited to the 322a position, bottom shown in Fig. 3 A.
In addition the better position that is located in ring heart space 300A corresponding to bearing 200, sagittal plane 310.As shown in Fig. 3 E, Fig. 3 E is the section-drawing of Fig. 3 C along D-D direction, and it schematically shows the relative position of strain gage 400, bearing 200 and bearing seat 300 simultaneously.As shown in Fig. 3 A and Fig. 3 E, storage tank 322 extends into ring body from the first anchor ring 302 of ring body and reaches certain depth L, and the position of degree of depth L is better while making storage tank bottom 322a (sagittal plane 310) just be located in ring heart space 300A corresponding to bearing 200 bearing thickness essence central authorities.For example, in this embodiment, the width of single bearing 200 on axial A is W/2, in the time that two bearings 200 are placed in the ring heart space 300A of bearing seat 300, two bearings 200 width summation W on axial A is bearing thickness, and the better position that is positioned at corresponding bearing thickness essence central authorities of storage tank bottom 322a (sagittal plane 310), that is position (from this middle position A two opposite senses vertically, respectively thering is the bearing thickness of W/2) between corresponding two bearings 200.In other embodiment, in the time using single bearing or plural bearing, close-packed arrays or have the arrangement of spacing, the position of corresponding bearing thickness essence central authorities refer to better corresponding to single bearing or plural bearing in the axial direction the distance between two outer most edge define 1/2 place (being the position of W/2) of overall width W.
Moreover in this embodiment, bearing seat 300 more comprises barricade 306, wherein barricade 306 be arranged at one of them anchor ring (for example the first anchor ring 302) of the first anchor ring 302 and the second anchor ring 304 upper and along bearing radially B extend towards rotating shaft 100.As shown in Fig. 3 A and Fig. 3 D, barricade 306 from the first anchor ring 302 along bearing radially B towards ring heart space 300A mono-side extend, to make bearing seat 300 be less than the ring opening at the second anchor ring 304 in the ring opening of the first anchor ring 302.That is bearing seat 300 is less than the interior ring diameter D2 at the second anchor ring 304 in the interior ring diameter D1 of the first anchor ring 302, and the external diameter of bearing 200 is better between two interior ring diameter D1, D2.By the design of barricade 306, bearing 200 enters and holds axle bed 300 and be located in ring heart space 300A from the second anchor ring 304 sides, and cannot depart from and hold axle bed 300 from the first anchor ring 302 sides.Moreover as shown in Figure 2, the locating part 700 of rotating shaft mechanism 10 is fixed on rotating shaft 100, limit bearing 200 displacement of A vertically with the barricade 306 of fitted shaft bearing 300.Particularly, locating part 700 can be the C type ring that is sheathed on rotating shaft 100, and with respect to 306 the second anchor ring 304 sides at bearing seat 300 of barricade, so that bearing 200 is limited between barricade 306 and locating part 700, and then effectively limits the longitudinal travel of bearing 200.In addition, the position that rotating shaft 100 arranges corresponding to locating part 700 can have draw-in groove 102, is beneficial to fix in rotating shaft 100 as the C type ring of locating part 700, further strengthens the limit effect of locating part 700.
In addition, as shown in Fig. 2 and Fig. 3 A, bearing seat 300 also has the first connecting portion 330, from the first anchor ring 302 outstanding the first connecting portion 330 that forms tab form of A vertically, in order to the support shell 500 of connection rotating shaft mechanism 10.Support shell 500 twisted rotary shafts 100, and there is the first connecting portion 330 of the second connecting portion 530 adapter shaft bearings 300, rotate with supporting revolving shaft 100, that is to say when applied moment is accepted in rotating shaft 100 can be to be placed in state in support shell 500 to rotate around axial A.In this embodiment, support shell 500 is form of sleeve, and its two ends have plural groove as the second connecting portion 530 the first connecting portion 330 of respective shaft bearing 300 tab forms respectively, to connect the bearing seat 300 of the left and right sides.That is the first connecting portion 330 of bearing seat 300 tab forms vertically A stretches into the second connecting portion 530 of the form of grooves of support shell 500, so that bearing seat 300 connects support shell 500.In addition, the first connecting portion 330 and the second connecting portion 530 can have respectively corresponding screw 330a, 530a, further by screw locking bearing seat 300 and support shell 500.
Moreover as shown in Figure 2, support shell 500 has holding part 510, for circuit unit 900 is set, and cover and protective circuit unit 900 by cap 520, wherein circuit unit 900 is electrically connected auxiliary power source 50 and the strain gage 400 of bicycle device 1.The deflection that circuit unit 900 can measure according to above-mentioned strain gage 400, controls auxiliary power source 50 (being shown in Figure 1A).As shown in Figure 1B and Fig. 2, holding part 510 has the opening form on lip limit in support shell 500, when circuit unit 900 is arranged at aperture position, is supported by lip limit, form that 520 of caps are covered on circuit unit 900 and better and support shell 500 are combined into one.When circuit unit 900 is arranged at support shell 500, the better top that is positioned at rotating shaft 100, accumulates on circuit unit 900 places to lower environment aqueous vapor.Particularly, with respect to the axial A of rotating shaft 100, the setting position of strain gage 400 and circuit unit 900 is respectively in the relative both sides of rotating shaft 100, that is the below of rotating shaft 100 and top.In addition, have preferably location when making rotating shaft mechanism 10 be installed in bicycle frame 20, as shown in Figure 3A, bearing seat 300 has more positioning groove 340.Positioning groove 340 be formed at circumferential surface (the being outer ring surface) 300B of bearing seat ring body and vertically A extend, the telltale mark when being connected with framework 20 as bearing seat 300.That is when installing rotating shaft mechanism 10, user can be according to the positioning groove of bearing seat 300 340 positions, make easily strain gage 400 be positioned at the below of rotating shaft 100, make circuit unit 900 be positioned at the top of rotating shaft 100 simultaneously.
Moreover Fig. 4 A and Fig. 4 B are before the support shell of another illustrative embodiments of the present invention and the assembling of bearing seat and the rear schematic diagram of assembling, wherein, in Fig. 4 A, schematically show the relative position of bearing 200 and locating part 700 and bearing seat 300 simultaneously.As shown in Fig. 4 A and 4B, support shell 500 also can have extends the positioning groove 340 of positioning groove 540 corresponding to bearing seat 300, and rotating shaft mechanism 10 also can comprise location hitching post 550, be inserted among the positioning groove 340 of bearing seat 300 and the extension positioning groove 540 of support shell 500, further to strengthen specifically labelled position.That is, when bearing seat 300 and support shell 500 in conjunction with time, positioning groove 340 and extension positioning groove 540 are aligned to continuous positioning groove, and location hitching post 550 is crossed in the continuous positioning groove that is arranged at positioning groove 340 and extension positioning groove 540 common compositions between bearing seat 300 and support shell 500.Should be noted at this, location mechanism (for example positioning groove 340, the location hitching post 550) alternative of rotating shaft mechanism 10 is only formed at one-sided bearing seat 300, but not as limit.
Moreover as shown in Figure 2, plural magnet ring 800 is fixed on rotating shaft 100, a plurality of magnet rings 800 produce magnetic field, and these magnetic fields are detected by detecting element, thereby detecting element measures the rotating speed of rotating shaft 100 and the application of force direction of applied moment according to the changes of magnetic field detecting.Particularly, in this embodiment, two magnet rings 800 for example sticking together, the mode such as welding or fixing is fixed on rotating shaft 100, to measure respectively the rotating speed of rotating shaft 100 and the application of force direction of applied moment.For example, the magnet ring 800 that measures applied moment application of force direction can be the magnet ring (for example the N utmost point, the S utmost point occupy half and half ring body) only with two pole region, to be judged as left foot by the transformation of pole region or right crus of diaphragm applies the applied moment of trampling.The magnet ring 800 that measures rotating shaft 100 rotating speeds can be the magnet ring (for example ring body is on average divided into 4 pole region, and the N utmost point, S extremely respectively occupy 2 pole region) with multiple pole region, to measure the rotating speed of rotating shaft 100 by the rate of transformation of pole region.
In addition, as shown in Figure 2, the thread barrel 600 of rotating shaft mechanism 10 is also form of sleeve, its be socketed on bearing seat 300 and in order to Five-way tube 22 combinations of bicycle frame 20.The surface of one of them (for example right side thread barrel) of the thread barrel 600 of the left and right sides has screw thread, and 600 matching thread rings 602 of thread barrel of opposite side, so that rotating shaft mechanism 10 is fixed in the Five-way tube 22 of bicycle frame 20.In the time of applied moment rotating shaft 100, because rotating shaft mechanism 10 links by thread barrel 600 and bicycle frame 20, and make bearing seat 300 be connected to bicycle frame 20, and then can facilitation moment transmit via rotating shaft 100 and bearing 200, make strain gage 400 measure the deflection occurring to the sagittal plane 310 of bearing seat 300.Circuit unit 900 connects the signal wire (SW) 420 of strain gage 400 to receive the deflection being measured, and then according to the deflection control auxiliary power source 50 recording, to provide auxiliary power to bicycle knight, drives burden thereby alleviate.
In addition, strain gage 400 is arranged at the position of bearing seat, can have different variations.Fig. 5 A to Fig. 5 C is the different visual angles schematic diagram of the bearing seat of another illustrative embodiments of the present invention.As shown in Figure 5 A to FIG. 5 C, in another embodiment, bearing seat 300 has contiguous sagittal plane 310, at least one thinning district 350, and its bottom bracket 300 ring bodies are less than bearing seat 300 ring bodies in the radial wall thickness T1 of 310 positions, sagittal plane in the radial wall thickness T2 of 350 positions, thinning district.Particularly, split bearing seat 300 ring bodies of contiguous sagittal plane 310 cave in to form thinning district 350 towards the ring heart, make the relative thinning of the ring body part district 350 at 310 places, sagittal plane form comparatively outstanding platform part 360, for strain gage 400 is set.In this embodiment, thinning district 350 surrounds platform part 360 and can have the thinning district of different radials wall thickness.For example, there is less radial wall thickness T3 (that is T3≤T2<T1) in the thinning district 350 ' of the upper abutment platforms of axial A portion 360.By the setting in thinning district 350, the deflection that can make the sagittal plane 310 on bearing seat 300 occur is more remarkable, the particularity measuring to promote strain gage 400.Moreover, as mentioned above, the normal direction N of sagittal plane 310 is perpendicular to the radially B of bearing of bearing 200, in this embodiment, rectangular platform portion 360 be parallel to bearing radially the plane on B all can be used as the sagittal plane 310 that strain gage 400 is set, to meet diversified design requirement.That is the side plane 361,362,363 and 364 of rectangular platform portion 360 all can be used as the plane that strain gage 400 is set.In addition, bearing seat 300 has more trough 324, and trough 324 is communicated with thinning district 350.Trough 324 is formed at outer ring surface (the being circumferential surface) 300B of bearing seat 300 ring bodies and extends and supply to lay the signal wire (SW) 420 of strain gage 400 along the circumferencial direction C of bearing seat ring body, to export the deflection that measures gained to circuit unit 900.
Below with reference to Figure 1A-Fig. 5 C, another embodiment of the present invention is described, the rotating shaft mechanism of the present embodiment has with the rotating shaft mechanism of above-described embodiment similar, difference is that the rotating shaft mechanism of the present embodiment also comprises right bearing, right bearing seat and right strain gage, and the left bearing of the right bearing of the present embodiment, right bearing seat and right strain gage and above-described embodiment, left shaft holder and left strain gauge structure are similar, therefore, Figure 1A-Fig. 5 C not shown right bearing, right bearing seat and right strain gage.Simultaneously, for convenience of description, original paper same as the previously described embodiments in the present embodiment still adopts same numeral, as shown in Figure 1A and 1B, rotating shaft mechanism 10 is arranged in framework 20, rotating shaft mechanism 10 comprises rotating shaft 100, left bearing 200, right bearing (not shown, to be symmetrical arranged with left bearing 200), left shaft holder 300, right bearing seat (not shown, to be symmetrical arranged with left shaft holder 300), left strain gage 400 and right strain gage (not shown).Rotating shaft 100 is for accepting applied moment to rotate around axial A; Left bearing 200 is socketed on the left side of rotating shaft 100, and right bearing is socketed on the right-hand part of rotating shaft 100, and left bearing 200 reduces the friction drag of rotating shaft 100 in the time that axial A rotates jointly with right bearing; Left shaft holder 300 is arranged between framework 20 and left bearing 200, and for being installed with and carries left bearing 200, left shaft holder 300 has along the radially left sagittal plane 310 of B of left bearing 200, and left shaft holder 300 outsides are connected to framework 20; Left strain gage 400 is arranged on left sagittal plane 310; Right bearing seat is arranged between framework 20 and right bearing, and for being installed with and supports right bearing, right bearing seat has along right bearing right sagittal plane radially, and right bearing seat outside is connected to framework 20; Right strain gage is arranged on right sagittal plane.Wherein, in the time of applied moment rotating shaft 100, applied moment is via rotating shaft 100, left bearing 200 and right bearing transmission, make left sagittal plane 310 that left deflection occur, make right sagittal plane that right deflection occur, left strain gage 400 measures left deflection, and right strain gage measures right distortion.
In a specific embodiment, it is (not shown with right-hand tread plate that rotating shaft mechanism 10 also comprises left-hand tread plate 32, setting corresponding to left-hand tread plate 20), left-hand tread plate 32 is connected in the left end point of rotating shaft 100 by left crank 30, and right-hand tread plate is connected in by right crank on the right endpoint of rotating shaft 100, user tramples left-hand tread plate 32 downwards and applies applied moment with this right-hand tread plate, left strain gage 400 and right strain gage are all arranged at the below of rotating shaft 100, left strain gage 400 measures user while trampling left-hand tread plate 32 downwards the corresponding left deflection occurring, the right deflection of the corresponding generation of institute while trampling right-hand tread plate downwards that right strain gage measures user.
Further, rotating shaft mechanism 10 can also comprise support shell 500 and circuit unit 900, as shown in Figure 2, support shell 500 twisted rotary shafts 100 and be arranged at left shaft holder 300 and right bearing seat between, circuit unit 900 is arranged in support shell 500.Circuit unit 900 is electrically connected auxiliary power source 50, and the right deflection that the left deflection that circuit unit 900 measures according to left strain gage 400 and right strain gage measure, controls auxiliary power source 50.
Compared to known techniques, rotating shaft mechanism of the present invention arranges strain gage on the sagittal plane by bearing seat, makes strain gage be arranged at bearing seat and then deflection that directly sensitive axis bearing produces, measures more accurately obtaining.Moreover by the trough design of bearing seat, the effectively setting of management signal circuit, reduces signal line and other assembly and produces the problem of interfering, also without extra referral assembly.Rotating shaft mechanism of the present invention is applied to engine installation, can accurately measure the size of applied moment, and then effectively controls auxiliary power source, to meet user's demand.
The present invention is described by above-described embodiment, but above-described embodiment is only for illustrating object but not for restriction.Those skilled in the art are not deviating under spirit of the present invention when knowing, can have other modification of illustrative embodiments in the embodiment of this special version.Therefore, category of the present invention is also contained this type of modification and is only limited by the scope of claims.
Claims (19)
1. a rotating shaft mechanism, is arranged in framework, it is characterized in that this rotating shaft mechanism comprises:
Rotating shaft, for accepting applied moment with around axially rotating;
Bearing, is socketed on this rotating shaft, to lower the friction drag of this rotating shaft when this axial rotation;
Bearing seat, is arranged between this framework and this bearing, and this bearing seat is installed with and supports this bearing, and this bearing seat has along this bearing sagittal plane radially, and is connected to this framework outside this bearing seat; And
Strain gage, is arranged on this sagittal plane of this bearing seat;
Wherein, in the time that this applied moment is rotated this rotating shaft, this applied moment is transmitted via this rotating shaft and this bearing, makes this sagittal plane amount of deforming on this bearing seat, and this strain gage measures this deflection.
2. rotating shaft mechanism as claimed in claim 1, it is characterized in that this bearing seat is ring body, this bearing is located in the ring heart space of this ring body, and perpendicular to this bearing radially, and this sagittal plane is located in the position in this ring heart space to the normal direction of this sagittal plane corresponding to this bearing.
3. rotating shaft mechanism as claimed in claim 2, is characterized in that this bearing seat has groove, and this sagittal plane is arranged in this groove, and the notch of this groove is towards being parallel to this axial direction, so that this strain gage is axially located in this groove from this notch along this.
4. rotating shaft mechanism as claimed in claim 3, it is characterized in that this bearing has bearing thickness, this groove extends into this ring body one degree of depth from the first anchor ring of this ring body, and the position of this degree of depth these bearing thickness central authorities while being located in this ring heart space corresponding to this bearing.
5. rotating shaft mechanism as claimed in claim 4, it is characterized in that the trough that this groove comprises storage tank and is communicated with this storage tank, this strain gage also comprises signal wire (SW), and this trough extends and supplies to lay this signal wire (SW) to export this deflection that measures gained along the circumferencial direction of this ring body.
6. rotating shaft mechanism as claimed in claim 4, it is characterized in that this ring body also comprises barricade, this dams setting radially extends towards this rotating shaft in this first anchor ring and along this bearing, wherein this rotating shaft mechanism also comprises locating part, this locating part is fixed on this rotating shaft, to coordinate this barricade of this bearing seat to limit this bearing along this axial displacement.
7. rotating shaft mechanism as claimed in claim 2, is characterized in that this bearing seat has contiguous this sagittal plane, at least one thinning district, and wherein this ring body is less than this ring body in the radial wall thickness of this position, sagittal plane in the radial wall thickness of this thinning zone position.
8. rotating shaft mechanism as claimed in claim 7, it is characterized in that this strain gage more comprises signal wire (SW), this bearing seat also has trough and is communicated with this thinning district, and the outer ring surface that this trough is formed at this ring body extends and supplies to lay this signal wire (SW) to export this deflection that measures gained along the circumferencial direction of this ring body.
9. rotating shaft mechanism as claimed in claim 2, is characterized in that this bearing seat also has positioning groove, and this positioning groove is formed at the circumferential surface of this ring body and extends axially along this, the telltale mark when being connected with this framework as this bearing seat.
10. rotating shaft mechanism as claimed in claim 9, it is characterized in that this rotating shaft mechanism also comprises support shell and location hitching post, this support shell has extension positioning groove, in the time that this bearing seat and this support shell are positioned predetermined angle, this location hitching post can be crossed over this bearing seat and this support shell, is arranged in this positioning groove and this extension positioning groove simultaneously.
11. rotating shaft mechanisms as claimed in claim 1, is characterized in that this rotating shaft mechanism also comprises support shell and circuit unit, and this support shell is around this rotating shaft and connect this bearing seat, and this circuit unit is arranged in this support shell.
12. rotating shaft mechanisms as claimed in claim 11, is characterized in that this circuit unit is electrically connected auxiliary power source, and this deflection that this circuit unit measures according to this strain gage, controls this auxiliary power source.
13. rotating shaft mechanisms as claimed in claim 12, is characterized in that this circuit unit is positioned at the top of this rotating shaft, accumulate on this circuit unit place to reduce environment aqueous vapor.
14. rotating shaft mechanisms as claimed in claim 1, is characterized in that this rotating shaft mechanism also comprises a plurality of magnet rings, and these a plurality of magnet rings are fixed on this rotating shaft, to measure the rotating speed of this rotating shaft and the application of force direction of this applied moment.
15. rotating shaft mechanisms as claimed in claim 1, it is characterized in that this rotating shaft mechanism also comprises pair of pedals and is connected in this rotating shaft, user tramples this downwards pedal is applied to this applied moment, wherein this strain gage is arranged at the below of this rotating shaft, while trampling this to pedal downwards in order to detect this user corresponding this deflection occurring.
16. 1 kinds of rotating shaft mechanisms, are arranged in framework, it is characterized in that this rotating shaft mechanism comprises:
Rotating shaft, for accepting applied moment with around axially rotating;
Left bearing, is socketed on the left side of this rotating shaft;
Right bearing, is socketed on the right-hand part of this rotating shaft, and this left bearing and this right bearing reduce the friction drag of this rotating shaft in the time of this axial rotation jointly;
Left shaft holder, is arranged between this framework and this left bearing, and for being installed with and supporting this left bearing, this left shaft holder has along left bearing left sagittal plane radially, and this left shaft holder outside is connected to this framework;
Left strain gage, is arranged on this this left sagittal plane;
Right bearing seat, is arranged between this framework and this right bearing, and for being installed with and supporting this right bearing, this right bearing seat has along right bearing right sagittal plane radially, and this right bearing seat outside is connected to this framework; And
Right strain gage, is arranged on this right sagittal plane;
Wherein in the time that this applied moment is rotated this rotating shaft, this applied moment is transmitted via this rotating shaft, this left bearing and this right bearing, makes this left sagittal plane that left deflection occur, and makes this right sagittal plane that right deflection occur, this left strain gage measures this left deflection, and this right strain gage measures this right distortion.
17. rotating shaft mechanisms as claimed in claim 16, it is characterized in that this rotating shaft mechanism also comprises left-hand tread plate and right-hand tread plate, this left-hand tread plate is connected in the left end point of this rotating shaft, and this right-hand tread plate is connected on the right endpoint of this rotating shaft, user tramples this left-hand tread plate and this right-hand tread plate downwards and applies this applied moment, this left strain gage and this right strain gage are all arranged at the below of this rotating shaft, this left strain gage measures this user while trampling this left-hand tread plate downwards corresponding this left deflection occurring, this right strain gage measures this user while trampling this right-hand tread plate downwards corresponding this right deflection occurring.
18. rotating shaft mechanisms as claimed in claim 16, is characterized in that this rotating shaft mechanism also comprises support shell and circuit unit, this support shell around this rotating shaft and be arranged at this left shaft holder and this right bearing seat between, this circuit unit is arranged in this support shell.
19. rotating shaft mechanisms as claimed in claim 18, it is characterized in that this circuit unit is electrically connected auxiliary power source, this right deflection that this left deflection that this circuit unit measures according to this left strain gage and this right strain gage measure, controls this auxiliary power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410039779.8A CN103786523A (en) | 2013-11-22 | 2014-01-27 | Rotary shaft mechanism |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310596580 | 2013-11-22 | ||
| CN201310596580.0 | 2013-11-22 | ||
| CN201410039779.8A CN103786523A (en) | 2013-11-22 | 2014-01-27 | Rotary shaft mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103786523A true CN103786523A (en) | 2014-05-14 |
Family
ID=50662768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410039779.8A Pending CN103786523A (en) | 2013-11-22 | 2014-01-27 | Rotary shaft mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103786523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104044682A (en) * | 2014-06-12 | 2014-09-17 | 苏州达方电子有限公司 | Revolving shaft mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2058637A2 (en) * | 2007-11-08 | 2009-05-13 | Grand Valley State University | Bicycle torque measuring system |
| CN201373784Y (en) * | 2009-02-27 | 2009-12-30 | 李群 | Torque transducer for bicycle |
| CN102778319A (en) * | 2011-05-10 | 2012-11-14 | 株式会社岛野 | Bicycle force sensing assembly |
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2014
- 2014-01-27 CN CN201410039779.8A patent/CN103786523A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2058637A2 (en) * | 2007-11-08 | 2009-05-13 | Grand Valley State University | Bicycle torque measuring system |
| CN201373784Y (en) * | 2009-02-27 | 2009-12-30 | 李群 | Torque transducer for bicycle |
| CN102778319A (en) * | 2011-05-10 | 2012-11-14 | 株式会社岛野 | Bicycle force sensing assembly |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Application publication date: 20140514 |