M410012 五、新型說明： 【新型所屬之技術領域】 本新型是有_於一種用於自行車的曲括轴，特別是指 一種具有扭力感測功能的曲柄軸組合。 【先前技術】 中華民國專利公開第2〇〇936451號揭露一種交通工且 用輔助動力控制裝置，該專利主要藉由一離合裝置帶動二 磁鐵位移，該磁鐵位移時能使得一感測器感應到磁 的變化，進而控制一馬達的速度快慢。 " 然而’該專利有以下缺點： 1·該磁鐵相對該感測器的往復移動必須藉助一彈簧提 供彈力’但是該彈簧在使用一段時間後會逐漸彈性 痺乏，以致於該感測器感應磁力強弱的結果會明顯 地越來越不準確’於是導致馬達控制的效果不符合 使用者需求。 2.該磁鐵相對該感測器的位移量與該彈簧的彈性有關 Μ旦是每一個彈簧的彈性都會有一些差異，且隨著 使用者的使用方式不@，則對該彈簀壽命的影響也 會不同，所以該感測器感應磁力強弱的結果並無法 提供精確的馬達控制效果，準確度不高。 3.該磁鐵相對該感測器的往復移動是藉由該離合裝置 達成，但是該離合裝置在不斷使用下會持續有機械 磨知’並產生帶磁性或金屬的粉@，造成各個零件 的壽命降低或故障，以及控制馬達的準確度下降， 3 M410012 另外，該離合裝置機械性的運作容易產生熱能，在 向迷運作下所產生的高溫容易造成該感測器的感測 結果不準確或損壞。 此外’中華民國專利證書第M339677號及目前市面上 大多數的扭力感測裝置，都是採用偏向單側曲柄進行扭力 感測，而不是综合兩側曲柄進行扭力感測，因此當使用者 踩踏時如果兩隻腳的施力大小不同，量測結果就會受到影 響而產生不準確的缺點。 【新型内容】 因此，本新型的目的在於提供一種準確度高的具有扭 力感測功能的曲柄轴組合。 於疋，本新型具有扭力感測功能的曲柄軸組合包含一 曲柄單元、—表面聲波單元、_應變規，及—工作單元。 該曲柄單元包括一沿一軸線延伸的曲柄軸，及一套接 於該曲柄軸的連接環。 一套接於該曲柄軸的環體，以及M410012 V. New description: [New technical field] The new type is a crankshaft for bicycles, especially a crankshaft combination with torque sensing function. [Prior Art] The Republic of China Patent Publication No. 2,936,451 discloses a traffic worker and an auxiliary power control device. The patent mainly drives a displacement of two magnets by a clutch device, which can cause a sensor to sense when displaced. The change in magnetism, in turn, controls the speed of a motor. " However, the patent has the following disadvantages: 1. The reciprocating movement of the magnet relative to the sensor must provide a spring force by means of a spring 'but the spring will gradually become scarce after a period of use, so that the sensor senses The result of the magnetic strength will be significantly more and more inaccurate', so that the effect of the motor control does not meet the needs of the user. 2. The displacement of the magnet relative to the sensor is related to the elasticity of the spring. Once there is some difference in the elasticity of each spring, and the effect of the user's use is not @, the impact on the life of the magazine It will also be different, so the result of the sensor's induction of magnetic strength does not provide accurate motor control, and the accuracy is not high. 3. The reciprocating movement of the magnet relative to the sensor is achieved by the clutch device, but the clutch device continues to be mechanically polished under continuous use and produces a powder with magnetic or metal@, resulting in the life of each component. Reduce or malfunction, and reduce the accuracy of the control motor, 3 M410012 In addition, the mechanical operation of the clutch device is prone to generate thermal energy, and the high temperature generated by the operation of the clutch device may cause the sensor's sensing result to be inaccurate or damaged. . In addition, the Republic of China Patent Certificate No. M339677 and most of the current torque sensing devices on the market use a biased one-side crank for torque sensing, instead of integrating the two sides of the crank for torque sensing, so when the user steps on If the force applied to the two feet is different, the measurement results will be affected and inaccurate defects will occur. [New content] Therefore, the object of the present invention is to provide a highly accurate crankshaft assembly with a torque sensing function. Yu Yu, the new crankshaft combination with torque sensing function includes a crank unit, a surface acoustic wave unit, a _ strain gauge, and a working unit. The crank unit includes a crank shaft extending along an axis and a set of connecting rings connected to the crank shaft. a set of rings attached to the crankshaft, and
該表面聲波單元包括一套 設置於該環體的一第一天線、 叉換能器、一沿一聲波方向病 聲波反射器’及一沿該&浊十 4 該應變規設置在該遠祖 反射器形成迫路，該應f連接於該第二聲波 ，且電性變化影響該第二電波。 受化 0 X工作早7C包括—圍繞該曲柄軸且不形成接觸的 二：設置於該工作環的第二天線，及一設置於該工作環 =運异模組’該運算模組是經由該第二天線輸出該基礎電 據電波與該第二電波，該運算模組是根 電波與該第二電波的差異運算出-扭力值。 本新里的有盈效果在於：使用時，因 測的設計不是採用嬙姑士 1 械式運作’所以沒有產生機械磨耗 來的缺點’該表面聲波單元與該應變規即使在 曰月使用下會產生一些電學特性變化，但是因為該運算模 2根據該第—電波與該第二電波的頻率差值運算出該扭 :不是單憑一個感測信號來運算出該扭力值，所以能 大幅降低該扭力值失真的缺點，此外，由於該第一電波愈 =二電波的頻率差值能設計成差異相當大，該運算模組 2易判斷出差異而運算出該扭力值，所以該扭力感測系 、，先忐充分達到準確度高的優點。 【實施方式】 、有關本新型之前述及其它技術内容、特點與功效，在 以下配合參考圖式之較佳實施例的詳細說明中，將可清楚 的呈現。 如圖 1、2、3、4於- 丄 所不’本新型具有扭力感測功能的曲 柄轴組合則是採用—扭力感測系統扇與一曲柄單元5〇 M410012 整合。 該曲柄單元50包括一沿一軸線L延伸的曲柄軸5i、一 圍繞該軸線L且套接於該曲柄軸51的連接環52、—齒盤套 環53、-環繞於該齒盤套環53的第_殼套54，及一連接 於該齒盤套環53與該第-殼套54之間的第一轴承& 該曲柄轴51是用於設置在該自行車上，且兩端能分別 結合一曲柄（圖未示）運作。 該連接環52在本實關巾與該曲㈣51焊接相連， 該曲柄轴51與該連接環52是同步轉動該連接環52具有 多個沿該軸線L方向延伸且相間隔的凸部521。 該齒盤套環53是與該連接環52的該等凸部521嚙合 形成傳動。 該扭力感測系統200包含-表面聲波單& 2〇、一應變 規30 ’及一工作單元4〇。The surface acoustic wave unit includes a first antenna disposed on the ring body, a fork transducer, a path acoustic wave reflector along an acoustic wave direction, and a path along the & turbidity. The reflector forms a forced path, the f is connected to the second acoustic wave, and the electrical change affects the second electrical wave. The normalized 0 X work early 7C includes - a second antenna that surrounds the crankshaft and does not form a contact: a second antenna disposed on the working ring, and a set in the working ring = a different module - the operation module is via The second antenna outputs the basic electric wave and the second electric wave, and the computing module calculates a torque value from a difference between the root electric wave and the second electric wave. The effect of this new mile is that when it is used, the design of the measurement is not the operation of the scorpion 1. Therefore, there is no disadvantage of mechanical wear. The surface acoustic wave unit and the strain gauge will be used even in the next month. The electrical characteristic change is generated, but the operation mode 2 calculates the twist according to the frequency difference between the first electric wave and the second electric wave: instead of calculating the torque value by using only one sensing signal, the torque can be greatly reduced. The disadvantage of the distortion of the torque value, in addition, since the frequency difference between the first electric wave and the second electric wave can be designed to be quite different, the computing module 2 can easily determine the difference and calculate the torque value, so the torque sensing system First, fully achieve the advantages of high accuracy. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. As shown in Fig. 1, 2, 3, and 4, the crankshaft combination with the torque sensing function is integrated with a torque sensing system fan and a crank unit 5〇 M410012. The crank unit 50 includes a crank shaft 5i extending along an axis L, a connecting ring 52 surrounding the axis L and sleeved on the crank shaft 51, a sprocket collar 53, and a wrap around the sprocket collar 53. a first sleeve 54 and a first bearing connected between the sprocket collar 53 and the first sleeve 54. The crank shaft 51 is for being disposed on the bicycle, and the two ends can be respectively Combined with a crank (not shown). The connecting ring 52 is welded to the curved piece (four) 51. The crank shaft 51 and the connecting ring 52 rotate synchronously. The connecting ring 52 has a plurality of convex portions 521 extending in the direction of the axis L and spaced apart. The sprocket collar 53 is engaged with the projections 521 of the coupling ring 52 to form a transmission. The torque sensing system 200 includes a surface acoustic wave single & 2, a strain gauge 30' and a working unit 4'.
該表面聲波單元2G包括—第—天線21 一電連接於該 第一天線 21 的指又換能器 22 (interdigital transducer，mT )、一沿一聲波方向X與該指叉換能器22相間隔的第一聲 波反射器23、-沿該聲波方向X與該第-聲波反射器23相 間隔的第二聲波反射器24，及-圍繞該軸線L且套接於該 曲柄軸51的環體25。 該表面聲波單元2G是運用表面聲波（Suffaee Ac〇ustic Wave ’ SAW)原理運作，在本實施例中採用積體電路製程製 作成晶片規格’體積相當微小，能安裝在該自行車的一曲 柄軸且不影響該曲柄轴的正常運作。 6 M410012 5亥第一夭線2〗所接收到的一基礎電波心是經由該指又 換月b器22轉換成沿該聲波方向χ傳遞的聲波。 該第一聲波反射器23是反射聲波到該指又換能器22 再經由該第一天線21輸出—第一電波&。 該第一聲波反射器24是反射聲波到該指又換能器22 再經由該第一天線21輪出一第二電波f2，在本實施例中， 該指叉換能器22及該第二聲波反射器24都採用指又電極 結構。The surface acoustic wave unit 2G includes a first antenna 21 electrically connected to the first antenna 21 and an interdigital transducer (mT), and an acoustic wave direction X and the interdigital transducer 22 a first acoustic wave reflector 23 spaced apart, a second acoustic wave reflector 24 spaced apart from the first acoustic wave reflector 23 in the acoustic wave direction X, and a ring body surrounding the axis L and sleeved on the crankshaft 51 25. The surface acoustic wave unit 2G operates using the principle of surface acoustic wave (Suffaee Ac〇ustic Wave ' SAW). In the present embodiment, the integrated circuit process is used to produce a wafer size that is relatively small in size and can be mounted on a crankshaft of the bicycle. Does not affect the normal operation of the crankshaft. 6 M410012 5H first line 2 The received basic wave center is converted into sound waves transmitted along the direction of the sound wave via the finger and the moon changing device 22. The first acoustic reflector 23 is a reflected acoustic wave to the finger and the transducer 22 is output via the first antenna 21 - a first electrical wave & The first acoustic wave reflector 24 reflects the sound wave to the finger and the transducer 22 and then rotates a second electric wave f2 via the first antenna 21. In the embodiment, the interdigital transducer 22 and the first Both acoustic wave reflectors 24 employ a finger-and-electrode structure.
该環體25形成有沿該軸線χ方向間隔的相反兩側，該 第^天線2i位於該環體25 —側，該指又換能器22 '該第 一聲波反射器23，及該第二聲波反射器24位於該環體乃 另一側。 該應變規30設置在該連接環52上以感測出該曲柄轴 二30電連接於該第二聲波反射器 ^ ，並忐隨者扭力變化產生電性變化，且電性變 化影響該第二電波’在本實施例中所指的 變規3〇的阻抗變化，該應變規3 疋該應 舍於一 Pf荽4 + 隹本貫苑例中的特性相 二二=改變阻抗大小的可變電阻，實際應 夺也了叫用電壓、電流、電感抗、 的應變規》 仇寻電ϋ變化 值得說明的是，由於該連接環52在本實 於該曲柄轴51做同步轉動，該曲柄轴Η 受到左右兩側曲柄的帶動，所以該連接 ==時 齒盤套環53的力量是綜合左右兩側 用於㈣該 們旳杻力，該應變規 7 M410012 30設置在該連接環52上對應扭力所產生的電性變化也就會 綜合左右兩側曲柄的扭力，不會偏重於其中—側的曲柄的 "" 斤°亥曲柄轴組合5〇〇的結構設計能達到使用者雙 腳踩踏力量不平均也不會影響感測準確度的優點。 該工作單70 40包括一第二天線41、一發射模組42、 -接收模組43、一電子開關44、一運算模組45、一圍繞該 曲柄軸51且不形成接觸的工作環私、一環繞且連接該工作 %、46的第—殼套47，及一連接於該第二殼套與該曲柄 軸51之間的第二軸承48。 該第一天線41、該發射模組42、該接收模組43、該電 子開關44及該運算模組45都是設置於該工作環46，該 苐天線21與該第二天線41在本實施例中互相對應以傳 遞電波，且都採用環形天線。 該電子開關44是電連接該發射模組42、該接收模組 43，以及該第二天線41，該電子開關44是由該運算模組 45控制。 該運异模組45是經由該發射模組42配合該電子開關 44的切換產生该基礎電波，該運算模組42是經由該接收 模組43配合該電子開關44的切換接收該第一電波fi與該 第二電波心，該運算模組42是根據該第一電波^與該第二 电波f2的差異運算出一扭力值，在本實施例中，該第一電 波fi與該第二電波心的差異是指頻率差值，且頻率差值與 杻力變化成正比。 使用時’因為扭力值感測的設計不是採用機械方式運 8 M410012 作，所以沒有產生機械磨耗與高溫所帶來的缺點，該表面 聲波單元20與該應變規30即使在長期使用下會產生一些 電學特性變化，但是因為該運算模組45是根據該第一電波 fl與该第二電波6的頻率差值運算出該扭力值，不是單憑 個感測彳i號來運算出該扭力值，所以能大幅降低該扭力 值失真的缺點，此外，由於該第一電波fl與該第二電波G 的頻率差值能設計成差異相當大，實際運作時能達到 100MHz以上的差值，所以該運算模組45很容易判斷出差 異而運算出該扭力值。 藉此，該曲柄軸組合500採用該扭力感測系統2〇〇，因 此就具備感測出該曲柄軸51的扭力大小的功能，實際應用 時該曲柄軸組合500可以直接安裝在自行車、電動車:健 身車等’滿足各種商品需要量測扭力的需求，該曲柄軸組 。500能提供精準的扭力變化，錢用壽命長，充分滿足 使用者欲達成精確操作的功能。 ^惟以上所述者，僅為本新型之較佳實施例而已，當不 能以此限定本新型實施之範圍，即大凡依本新型中請專利 範圍及說明書内容所作之簡單的等效變化與修飾，皆仍屬 本新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1是—示意圖，說明本新型具有扭力感测功能的曲 柄軸組合的較佳實施例； 圖2是一剖視圖，說明該較佳實施例中，-曲柄單元 表面聲波早元、一岸欒招洛 .,gg 應义規及一工作皁元的配置結構； 9 M410012 圖3是一示意圖，說明該較佳實施例中，該表面聲波 單元、該應變規，及該工作單元的組成結構； 圖4是一立體圖，說明該較佳實施例的整體外觀結構 10 M410012 【主要元件符號說明】The ring body 25 is formed with opposite sides spaced along the axis , direction, the first antenna 2i is located at the side of the ring body 25, the finger is again the transducer 22' the first acoustic wave reflector 23, and the second The acoustic reflector 24 is located on the other side of the ring. The strain gauge 30 is disposed on the connecting ring 52 to sense that the crankshaft 30 is electrically connected to the second acoustic reflector, and the electrical change is generated by the change of the torque, and the electrical change affects the second The variation of the impedance of the electric wave 'in the variation 3 指 referred to in this embodiment, the strain gauge 3 疋 should be a Pf 荽 4 + 特性 特性 苑 苑 例 = = = = = = = = = = = = = = = = = = The resistance, the actual response is also called the voltage, current, inductance, and the strain gauge. The change of the hateback is worth mentioning. Since the connecting ring 52 is synchronously rotated on the crank shaft 51, the crank shaft受到 It is driven by the cranks on the left and right sides, so the force of the sprocket ring 53 when the connection == is integrated with the left and right sides for (4) the force, and the strain gauge 7 M410012 30 is disposed on the connecting ring 52. The electrical changes caused by the torsion will also integrate the torsion of the cranks on the left and right sides, and will not be biased in the middle of the crank. The structure of the handle can reach the user's feet. Uneven pedaling force will not affect the accuracy of sensing Advantage. The work order 70 40 includes a second antenna 41 , a transmitting module 42 , a receiving module 43 , an electronic switch 44 , an operation module 45 , a working ring around the crank shaft 51 and not forming a contact a first sleeve 47 surrounding and connecting the working %, 46, and a second bearing 48 connected between the second sleeve and the crank shaft 51. The first antenna 41, the transmitting module 42, the receiving module 43, the electronic switch 44, and the computing module 45 are all disposed on the working ring 46. The antenna 21 and the second antenna 41 are In this embodiment, the radio waves are transmitted to each other, and both loop antennas are used. The electronic switch 44 is electrically connected to the transmitting module 42, the receiving module 43, and the second antenna 41. The electronic switch 44 is controlled by the computing module 45. The transmission module 45 generates the basic wave by switching between the electronic module 44 and the electronic switch 44. The computing module 42 receives the first wave via the switching of the receiving module 43 and the electronic switch 44. The operation module 42 calculates a torque value according to the difference between the first electric wave and the second electric wave f2. In the embodiment, the first electric wave fi and the second electric wave center The difference is the frequency difference, and the frequency difference is proportional to the change in force. When used, the design of the torque value sensing is not mechanically operated, so there is no disadvantage caused by mechanical wear and high temperature. The surface acoustic wave unit 20 and the strain gauge 30 will generate some even under long-term use. The electrical characteristic changes, but because the computing module 45 calculates the torque value based on the frequency difference between the first electric wave fl and the second electric wave 6, the torque value is not calculated by using only one sensing 彳i number. Therefore, the disadvantage of the distortion of the torque value can be greatly reduced. In addition, since the frequency difference between the first electric wave fl and the second electric wave G can be designed to be quite different, the actual operation can reach a difference of 100 MHz or more, so the operation The module 45 can easily determine the difference and calculate the torque value. Thereby, the crankshaft assembly 500 adopts the torque sensing system 2〇〇, and thus has the function of sensing the magnitude of the torque of the crankshaft 51. In actual application, the crankshaft assembly 500 can be directly mounted on a bicycle or an electric vehicle. : Exercise bikes, etc. 'Meet the needs of various commodities to measure the torque, the crankshaft set. The 500 provides precise torque changes and long life for the user to achieve precise operation. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and modification of the patent scope and the contents of the specification in the present invention. , are still within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a preferred embodiment of a crankshaft assembly having a torque sensing function; FIG. 2 is a cross-sectional view showing the sound wave of the crank unit surface in the preferred embodiment.元,一岸栾招洛., gg should be the rule and the configuration structure of a working soap element; 9 M410012 Figure 3 is a schematic diagram illustrating the surface acoustic wave unit, the strain gauge, and the work in the preferred embodiment Figure 4 is a perspective view showing the overall appearance structure of the preferred embodiment 10 M410012 [Description of main component symbols]
200… •…扭力感測系統 45 ••… …·運算模組 20•.… •…表面聲波單元 46··... •…工作環 21…… •…第一天線 47…… —弟一设套 22···.· •…指叉換能器 48••… …·第二軸承 23…… •…第一聲波反射器 500… •…曲柄軸組合 24…… •…第二聲波反射器 50…… •…曲柄單元 25…… •…環體 51…… —曲柄軸 f〇…… •…基礎電波 52…… •…連接環 fi…… •…第一電波 521… •…凸部 ^2....... •…第一電波 53…… •…齒盤套環 30…… …應變規 54…… —弟 设套 40…… …·工作單元 55…… —弟 軸承 41…… …第二天線 X....... 聲波方向 42…… …發射模組 L....... …·軸線 43…… …·接收模組 44…… …·電子開關 11200... •...Torque Sensing System 45 ••...··Computation Module 20•....•...Surface Acoustic Wave Unit 46··... •...Working Ring 21... •...First Antenna 47...——弟A set of 22······...finger transducer 48••...·second bearing 23...•...first acoustic reflector 500...•...crankshaft combination 24...•...second acoustic wave Reflector 50... •...Crank unit 25... •...ring 51...——crankshaft f〇... •...basic wave 52... •...connecting ring fi... •...first electric wave 521... •...convex Department ^2....... •...first wave 53... •...ring plate collar 30............strain gauge 54......——弟套套40...... ...·Working unit 55... 41...... ...the second antenna X....... the sound wave direction 42...the transmitting module L.......the axis 43......the receiving module 44...the electronic Switch 11