1343457 九、發明說明: 【發明所屬之技術領域】 本發明係關於用以連結軸與轴之聯軸器 【先前技術】 習知已使用 方向之背隙 將軸與軸固定來傳達旋轉,以此為目的, 多種聯轴器。又,於聯軸器’要求消除旋轉 (backlash) ’及提高旋轉運動傳達之正確性。1343457 IX. Description of the Invention: [Technical Field] The present invention relates to a coupling for coupling a shaft and a shaft. [Prior Art] It has been known to use a backlash of a direction to fix a shaft and a shaft to convey rotation. Purpose, a variety of couplings. In addition, the coupling 'requires the elimination of the backlash' and improves the correctness of the rotational motion.
習知之聯結器(例如,參照專利文獻丨),有如下構造者: 在圓筒體設置沿外周面之圓周方向開口之細縫若:外邙 加上負載於圓筒體時能使圓筒體撓曲,進而,將細縫端部 設為背曲面’藉此’可防止扭曲負載集中加於該細縫端部。 依該習知之聯結器,即使將扭曲負載加於圓筒體,具 有不容易使圓筒體裂開之效果。 又,習知,有可撓聯軸器(例如,參照專利文獻2),在 截面大致圓形之聯軸器主體之異常校正部^置複數個變形 用裂槽,按照該變形用裂槽數量’將傳達用壁部以等角度 間隔設置於軸方向之不同位置。 ▲圖5係表示該習知之可撓聯軸器,⑷係、可撓聯袖器i 之前視圖’ (b)係表示各傳達用壁部之軸方向截面圖。 在圖5冑軸器主體卜除了在兩端部分具備連結機 構6、6之外’並且在其中間具有異常校正部7。又,藉由 將夾緊用鎖緊螺栓5、5鎖緊,使對向插入於轴孔部2、3 之2支軸(未圖示)’以連結機構卜6鎖緊來鎖固,能以摩 擦力進行轉矩之傳達。 5 1343457 在異“父正部7 ’以具有複數個傳達用壁冑8之方弋 :置複數個變形用裂槽又,如圖5⑻所示,傳^ :::j以2 2正部丨之周方向不同位置,將各傳達用 σ大致形成螺旋狀之方式設置。 該習知之可撓聯袖器,因一體構成於轴方向, 對軸之旋轉方向不扭曲, 使 並且藉由放大或縮小變形用裂槽 度,具有可確保對旋轉轴之偏角、偏芯、伸縮所造成 之移位的柔軟性之效果。 作每成 (專利文獻1)曰本特開平8 226456號公報 (專利文獻2)日本特開平1〇_47365號公報 【發明内容】 然而,即使在上述習知之聯結器及可挽聯抽器之任— 情形’因細縫或變形用槽(軸垂直方向開縫), :。:係殘留切圓形狀之傳達用壁畜"的形狀,故相關於聯 結益及可撓聯軸器之強度會有如下問題。 、 即,前述傳達用壁部8因形成為未達轴孔部之薄辟, 致強度上有問題’故實際上’…c)所示,大多係:成 為超過軸孔部之厚壁,使轴孔部來到開縫底部1Ga之中間。 藉此,若軸孔部之内徑小時,開縫底部…之面 大’除非以大力量鎖緊夾緊用鎖緊螺栓,夾緊部不會棱曲。 反之,若軸孔部之内徑大時,開縫底部…之面 小’加在傳達用壁部之彎曲應力變大而容易破裂。 因此’會有必須按照轴孔部之内徑來改變開 問題。 $及< 1343457 又’在座面或螺紋面未加塗層之習知夹緊用鎖緊螺栓, 會有轴力(螺检之軸方向鎖固力)不穩定之問題。對此,若 等之摩擦減低劑塗上,座面或螺紋面之摩擦係 邊小’但有轴力變大之問題。因此,以使摩擦係數 二則之鎖緊轉矩鎖緊時’軸力則變過大,會有導致連結 ,之座面下陷’或是造成開縫或陰螺紋破損。 本發月#蓉於上述問題,提供一種聯轴器,即使轴 ❿ 孔部之内徑改變,亦 丌不需要變更開縫深度,而能獲得傳遠 轉矩與強度之平衡, ^ 衡並且不使轴力變大而使傳達轉矩穩 疋0 :發明之聯軸器’係具有軸固定部其具備:用以將 疋之軸孔部,及與該軸孔部平行設置之開縫,藉由夾 緊用鎖緊螺检朝盘兮站 _ 〃 μ軸垂直方向鎖緊該開縫使該開縫變 形’而鎖固於該軸,其特徵在於: f轴固定部具備能使該開縫變形之軸垂直方向開縫; '軸垂直方向開縫剩餘部之傳達用壁部徑方向截面係 呈扇形或新月形。藉此,來解決前述問題。 亦可構成,在—似# ± 對邊軸固定部之間設置間隔件。 又’較佳為,力^ ^ 在6亥夹緊用鎖緊螺栓表面,形成有由固 散於有機點結劑而構成之固體潤滑皮膜。 依本發明之聯輪s . 稱為「開縫」)剩餘:之:Λ垂直方向㈣ 邻傳達用壁部,在徑方向截面開縫底 邛形成圓弧狀,因此, 壁部截面積變大,故二':者,因開縫剩餘部之傳達用 故此使聯軸器之強度比習知者提高。 7 1343457 又 因不需要按照轴孔部内控之變更來改變開縫之加 工尺寸’故開縫之加工容易。 又’依本發明申請專利範圍第2項之發明,即使軸與 軸間之距離不同之情形,亦能對應。 又’依本發明申請專利範圍第3項之構成,不必使螺 栓座面及螺紋面之摩擦係數比習知者為小,能使摩擦係數 穩定。其結果,使鎖緊力穩定,而能使連結機構與軸間之 傳達轉矩穩定。 【實施方式】 以下’參照圖1至圖2說明本發明之第1實施形態。 圖1係本發明第丨實施形態之聯軸器1的前視圖。 圖2係表示本發明第丨實施形態之聯軸器1之—軸固 定部20,(a)係將軸固定部2〇從軸方向觀察的圖,係將 軸固定部20從徑方向觀察的圖。 在圖1,聯軸器1,將一對軸固定部2〇、30以連結機The conventional coupling (for example, refer to the patent document) has the following structure: The slit provided in the cylindrical body in the circumferential direction of the outer peripheral surface can be a cylindrical body if the outer casing is loaded on the cylindrical body. Flexing, and further, setting the end of the slit to the back curve 'by this' prevents the twisting load from being concentrated on the end of the slit. According to the conventional coupling, even if a twisting load is applied to the cylindrical body, there is an effect that the cylindrical body is not easily broken. Further, there is a known flexible coupling (for example, refer to Patent Document 2), in which a plurality of deformation cracks are formed in an abnormality correcting portion of a coupling body having a substantially circular cross section, and the number of cracks is used according to the deformation. 'The transmission wall portions are placed at different positions in the axial direction at equal angular intervals. ▲ Fig. 5 shows the conventional flexible coupling, (4) and the front view of the flexible sleeve i (b) showing the axial direction cross-sectional view of each of the communication wall portions. In Fig. 5, the main body of the shaft is provided with a joint correcting portion 7 in addition to the joint mechanisms 6, 6 at both end portions. Further, by locking the clamping lock bolts 5, 5, the two shafts (not shown) that are inserted into the shaft hole portions 2, 3 are locked by the coupling mechanism, and can be locked. The torque is transmitted by friction. 5 1343457 In the different "father part 7" to have a plurality of communication niches 8: set a number of deformation cracks, as shown in Figure 5 (8), pass ^ ::: j to 2 2 positive 丨In the different positions in the circumferential direction, each of the transmissions is substantially spirally formed. The conventional flexible sleeve device is integrally formed in the axial direction, and does not twist the direction of rotation of the shaft, and is enlarged or reduced by zooming in or out. The cracking degree of the deformation has an effect of ensuring the flexibility of the displacement of the rotating shaft by the off-angle, the eccentricity, and the expansion and contraction. Patent Document 1 (Japanese Patent Application Laid-Open No. Hei 8 226456) 2) Japanese Laid-Open Patent Publication No. _47365. SUMMARY OF THE INVENTION However, even in the case of the above-described conventional coupling and the retractable coupling, the case of the slit or the deformation groove (the vertical direction of the shaft is slit): The shape of the wall-to-skin is used for the conveyance of the tangential shape of the tangential shape. Therefore, there is a problem associated with the strength of the coupling and the flexible coupling. That is, the communication wall portion 8 is formed as a non-shaft. The thinning of the hole, causing problems in the strength 'so actually'...c) Most of them are: thicker than the shaft hole, so that the shaft hole portion comes to the middle of the slit bottom 1Ga. Therefore, if the inner diameter of the shaft hole portion is small, the bottom of the slit is large... unless locked with a large force When the locking bolt is tightly clamped, the clamping portion is not bent. On the other hand, if the inner diameter of the shaft hole portion is large, the surface of the slit bottom portion is small, and the bending stress applied to the conveying wall portion becomes large and is easily broken. Therefore, there will be a problem that must be changed according to the inner diameter of the shaft hole portion. $ and < 1343457 And the conventional clamping bolt for unapplied on the seat surface or the thread surface has axial force (spiral) In the case of the axial direction locking force, it is unstable. In this case, if the friction reducing agent is applied, the frictional side of the seat surface or the thread surface is small, but the axial force becomes large. Therefore, in order to make the friction When the locking torque of the coefficient is 2, the axial force becomes too large, and the joint will be caused to collapse, and the seat surface will be sunken or the seam or the female thread will be damaged. This is a question of providing the above problem. Coupling, even if the inner diameter of the shaft hole is changed, it is not necessary to change the slit depth. It is necessary to balance the torque and strength of the remote transmission, and to balance and not increase the axial force to make the transmission torque stable. 0: The coupling of the invention has a shaft fixing portion which is provided with a shaft hole portion for the cymbal And a slit provided in parallel with the shaft hole portion, and the lock is locked to the shaft by clamping the screw to the tray _ 〃 μ axis in the vertical direction to lock the slit The f-axis fixing portion is provided with a slit in a vertical direction in which the slit can be deformed, and the cross-section of the wall portion in the vertical direction of the slit in the vertical direction of the shaft is fan-shaped or crescent-shaped. The above problem can also be solved. It is also possible to provide a spacer between the fixed parts of the side shaft and the side of the shaft. Also, the force is ^ ^ at the surface of the locking bolt for clamping at 6 hai, formed by the solidification A solid lubricating film composed of an organic knotting agent. According to the invention, the joint wheel s. is called "slit"): the vertical direction (four) is adjacent to the wall portion, and the bottom portion of the slit in the radial direction is formed in an arc shape, so that the cross-sectional area of the wall portion becomes large. Therefore, the second ': is used to increase the strength of the coupling than the conventional one due to the communication of the remaining portion of the slit. 7 1343457 Since it is not necessary to change the machining size of the slit according to the change of the internal control of the shaft hole portion, the machining of the slit is easy. Further, according to the invention of claim 2 of the present invention, even if the distance between the shaft and the shaft is different, it can correspond. Further, according to the third aspect of the invention, the friction coefficient of the screw seat surface and the thread surface is smaller than that of the conventional one, and the friction coefficient can be stabilized. As a result, the locking force is stabilized, and the transmission torque between the link mechanism and the shaft can be stabilized. [Embodiment] Hereinafter, a first embodiment of the present invention will be described with reference to Figs. 1 to 2 . Fig. 1 is a front elevational view of a coupling 1 according to a third embodiment of the present invention. 2 is a view showing a shaft fixing portion 20 of the coupling 1 according to the embodiment of the present invention, and (a) is a view of the shaft fixing portion 2A viewed from the axial direction, and the shaft fixing portion 20 is viewed from the radial direction. Figure. In Fig. 1, the coupling 1 and the pair of shaft fixing portions 2, 30 are connected to each other.
構50固定。又,在軸固定部2〇與軸固定部3〇之間,設 置板彈簧54。 °X 又,軸固定部20、30之形狀,較佳為圓筒形狀。 在軸固定部20、30,分別設置用以插入軸之軸孔部22、 32。插入於軸孔部22、32之軸,藉由將夾緊用鎖緊螺栓μ 鎖緊’而分別鎖固於轴固定部2〇、3〇。 在軸固定部20、30,從轴固定部20、30之外周壁部2〇b、 30b ’朝軸固定部2〇、3〇之軸垂直方向,設置開縫24、34。 又’設置開縫24、34時,在從開縫24、34之端部分(開縫 1343457 端),即,從開縫底部24a、34a至開縫24、34相反側之另 一外周壁部20c、30c間,殘留開縫剩餘部之傳達用壁部 20a ' 30a ° ° 如圖2(a)所示,開縫底部24a,在軸固定部2〇之徑方 向,具有從外周壁部20b測量之最長距離LD與最短距離 SD,且形成以剩餘部界定曲線24b(呈彎曲圓弧狀)所界定 之扇形。 又,當軸固定部20之軸孔部22内徑大,使傳達用壁 部20a與軸孔部22疊合時,開縫24之傳達用壁部2〇a, 則形成如圖2(a)之形狀,亦即,使傳達用壁部2〇a與轴孔 部22疊合部分形成缺口。又,即使係最小,較佳為與軸 孔部22相接。 若係如上述扇形,因傳達用壁部2〇a之載面積增加, 故聯轴器之強度會增加,且’開縫底部24a與外周壁部2〇c 之角度形成鈍角’亦有使應力緩和之效果。 又,藉由使開縫形狀為扇形,若軸孔部22之内徑小時, 開縫之深度則淺’相反地若大時則深,故有不需每次隨轴 徑改變而變更開縫加工尺寸之優點。 另外之開縫28以到達轴孔部22之方式,與轴孔部22 平行設置,螺栓孔29係從軸孔部22離開既定間隔。將夹 緊用鎖緊螺栓52鎖進螺栓孔29,使該開縫28縮小寬度而 變形,俾使轴(未圖示)以面壓方式鎖固於轴孔部22。 以上’雖對一軸固定部2〇加以說明,但對另一軸固定 部30亦同樣。 9 1343457 藉由上述構成,將一軸固定於轴固定部2〇之轴孔部The structure 50 is fixed. Further, a leaf spring 54 is provided between the shaft fixing portion 2A and the shaft fixing portion 3A. Further, the shape of the shaft fixing portions 20 and 30 is preferably a cylindrical shape. Shaft hole portions 22, 32 for inserting the shaft are provided in the shaft fixing portions 20, 30, respectively. The shafts inserted into the shaft hole portions 22, 32 are respectively locked to the shaft fixing portions 2, 3, by locking the clamping lock bolts '. In the shaft fixing portions 20 and 30, slits 24 and 34 are provided in the vertical direction from the outer peripheral wall portions 2〇b and 30b' of the shaft fixing portions 20 and 30 toward the shaft fixing portions 2A and 3'. Further, when the slits 24 and 34 are provided, the outer peripheral wall portion on the opposite side from the slit bottom portions 24a, 34a to the slits 24, 34 from the end portions of the slits 24, 34 (the slit 1343457 end). Between 20c and 30c, the wall portion 20a' 30a ° of the remaining portion of the remaining slit portion is as shown in Fig. 2(a), and the slit bottom portion 24a has the outer peripheral wall portion 20b in the radial direction of the shaft fixing portion 2''. The longest distance LD measured is the shortest distance SD, and a sector shape defined by the remaining portion defining curve 24b (in a curved arc shape) is formed. When the inner diameter of the shaft hole portion 22 of the shaft fixing portion 20 is large and the communication wall portion 20a is overlapped with the shaft hole portion 22, the wall portion 2a for conveying the slit 24 is formed as shown in Fig. 2 (a). The shape, that is, the gap between the communication wall portion 2a and the shaft hole portion 22 is formed. Further, even if it is the smallest, it is preferable to be in contact with the shaft hole portion 22. If the fan shape is as described above, the bearing area of the conveying wall portion 2a increases, so the strength of the coupling increases, and the angle between the slit bottom portion 24a and the outer peripheral wall portion 2〇c forms an obtuse angle. The effect of easing. Further, when the slit shape is a fan shape, if the inner diameter of the shaft hole portion 22 is small, the depth of the slit is shallow, and if it is large, the depth is deep. Therefore, it is not necessary to change the slit every time the shaft diameter changes. The advantages of processing dimensions. Further, the slit 28 is provided in parallel with the shaft hole portion 22 so as to reach the shaft hole portion 22, and the bolt hole 29 is separated from the shaft hole portion 22 by a predetermined interval. The clamping lock bolt 52 is locked into the bolt hole 29, the slit 28 is deformed by being reduced in width, and the shaft (not shown) is locked to the shaft hole portion 22 by surface pressure. The above description of the one-axis fixing portion 2A is also the same, but the same applies to the other shaft fixing portion 30. 9 1343457 According to the above configuration, one shaft is fixed to the shaft hole portion of the shaft fixing portion 2〇
22,並 JL 軸固定匈 聯軸器 之2支軸的旋轉。 其次,參照圖3,說明本發明之第2實施形態。 10之軸固定部 圖3係將本發明第2實施形態之聯輪器 200從軸方向觀察的圖。 在圖3,開縫端24〇a,在轴固定部2〇〇之徑方向具 有從外周壁部測量之最長距離LD2與最短距離犯2, 且以剩餘部界定曲線240b(呈彎曲圓弧狀)界定,徑方向之 戴面形成新月形。 又’當轴固定部200之軸孔部22之内徑大,使開縫24〇 剩餘部(傳達用壁部2〇〇a)與軸孔部22疊合時,傳達用壁部 2〇〇a係呈’傳達用壁部2〇〇a與軸孔部22疊合部分形成缺 口的形狀(未圖示)。 其要點在於,傳達用壁部之壁厚只要具有能傳達轉矩 之最小壁厚即可。 又’此種形狀,因將金屬用鑛筆直插入即可加工,故 加工上之優點多。 如上述,因傳達用壁部200a徑方向之載面係呈新月 形’故該軸固定部200,比習知者具有與第1實施形態者 同樣之效果。尤其,該新月形因柔軟而容易彎曲,故有增 加傳達轉矩之效果。又,藉由在開縫端施加去角加工24〇a, 10 月匕避免應力集中。 其:欠,4 、照圖4 ’說明本發明之第3實施形態。 圖 4 〆 係本發明第3實施形態之聯轴器100的前視圖。 4之聯軸器100 ’在一對轴固定部20、30之間設置 中間體60〇 中間體60’係以連結機構500、500固定於軸固定部20、 3〇間。又, 部 ’在軸固定部20與中間體60之間,及在轴固定 與中間體60之間雙方,設置板彈簧54、54。又,當 作中間 和 J 60者’例如有間隔件、前述專利文獻2之異常 等。藉由設置此種中間體6〇,即使轴與軸間之距離 同之情形等亦能對應。 再者’較佳為在第丨〜3實施形態1、1〇、1〇〇之夾緊 用鎖緊' X» | . 、/、检52表面,形成用以使含氟樹脂分散於具耐蝕 之有機黏結劑的固體潤滑皮膜。 上述在具耐姓性之有機黏結劑使含氟樹脂分散之固體 月皮膜,比習知之二硫化鉬單體之皮膜,不會使座面及 螺紋面之摩擦係數過小,而能使摩擦係數穩定。 [貫施例] (實施例1) 將在有機黏結劑分散含氟樹脂者,塗布於夾緊用鎖緊 螺栓之螺紋面及座面,來形成薄膜之固體濶滑皮膜。 (比較例1) 將二硫化,塗布於夾緊用鎖緊螺栓之螺紋面及座面, 來形成薄膜之二硫化鉬皮膜。 1343457 (比較例2) 在螺紋面及座面未形成皮膜之習知夾緊用鎖緊螺栓。 使用上述螺栓(樣本數:各6)進行鎖緊試驗,比較鎖緊 力之穩定化特性。將結果表示於圖6。在圖6之表,縱轴 表示轉矩係數值,橫軸表示樣本號碼。 如圖ό所示,實施例1,與未形成皮膜之比較例2比 較,轉矩係數值之偏差則少,從此結果得知各樣本之轴力 係均等。 形成二硫化鉬皮膜之比較例1,轉矩係數值之偏差雖 少,但與實施例1及比較例2比較,轉矩係數值則小。因 此,若以與未形成皮膜之習知螺栓相同之鎖緊轉矩鎖緊 時,軸力則變過大,會有使軸固定部或陰螺紋破損之可能 性。 從上述結果得知,實施例丨,具有與未形成皮膜之習 知螺栓相同程度之摩擦係數’同時比習知能使摩擦係數之 偏差為少’使鎖緊力穩定。又,實施例^固體㈣皮膜, 不會一次使用即剝落,而能重複使用數次以上。 【圖式簡單說明】 圖1係本發明第1實施形態之聯軸器的前視圖。 圖2係表示本發明第1實施形態聯轴器之-軸固定部, ⑷係將轴固定部從財向觀察的圖,峨將㈣定部從徑 方向觀察的圖。 圖3係將本發明第2實施形態之轴固定部從軸方向觀 12 1343457 圖4係本發明第3實施形 圖5伟砉千明A 聯釉器的前視圖。 糸表不S知之可撓聯軸器 的前視圖,(b)係表示各傳達 )係習知可撓聯抽器 ®,^ 壁。卩之軸方向相對位置關係 圖⑷係表不另-傳達用壁部之形狀例。 圖6係表示使用於本發明雕紅。。 # 1. ^ ^ ^ 聯軸益之夾緊用鎖緊螺栓之 鎖緊试驗結果的曲線圖。 【主要元件符號說明】 1、10、100 :聯軸器22, and the JL shaft fixes the rotation of the two shafts of the Hungarian coupling. Next, a second embodiment of the present invention will be described with reference to Fig. 3 . 10 shaft fixing portion Fig. 3 is a view of the wheel brake 200 according to the second embodiment of the present invention as seen from the axial direction. In Fig. 3, the slit end 24〇a has the longest distance LD2 measured from the outer peripheral wall portion in the radial direction of the shaft fixing portion 2, and the shortest distance is 2, and the curve 240b is defined by the remaining portion (in a curved arc shape) ) Define that the wear direction of the radial direction forms a crescent shape. Further, when the inner diameter of the shaft hole portion 22 of the shaft fixing portion 200 is large, and the remaining portion (the communication wall portion 2A) of the slit 24 is overlapped with the shaft hole portion 22, the wall portion 2 is conveyed. a is a shape (not shown) in which a portion where the communication wall portion 2A and the shaft hole portion 22 are overlapped is formed. The point is that the wall thickness of the communicating wall portion may have a minimum wall thickness capable of transmitting torque. Further, in such a shape, the metal can be processed by inserting the metal straight into the pen, so that the processing has many advantages. As described above, since the carrier surface in the radial direction of the communication wall portion 200a has a crescent shape, the shaft fixing portion 200 has the same effect as that of the first embodiment. In particular, since the crescent shape is easily bent due to its softness, the effect of transmitting torque is increased. Also, by applying a chamfer 24 〇a at the slit end, stress concentration is avoided in October. It is: owed, 4, and the third embodiment of the present invention will be described with reference to Fig. 4'. Fig. 4 is a front elevational view of the coupling 100 according to the third embodiment of the present invention. The coupling 100 of the 4 is disposed between the pair of shaft fixing portions 20 and 30. The intermediate body 60' is intermediate between the shaft fixing portions 20 and 3 by the coupling mechanisms 500 and 500. Further, the plate portion 54 is provided between the shaft fixing portion 20 and the intermediate body 60, and between the shaft fixing portion and the intermediate body 60. Further, the intermediate and J 60's have, for example, a spacer, an abnormality of the aforementioned Patent Document 2, and the like. By providing such an intermediate 6〇, it is possible to correspond even if the distance between the shaft and the shaft is the same. Further, it is preferable to perform the clamping of the first, third, and third sides of the first to third embodiments, and to check the surface of the surface 52 to form a fluorine-containing resin dispersed in the corrosion-resistant resin. A solid lubricating film of an organic binder. The above solid film of the fluororesin dispersed in the organic binder having a resistance to the surname does not make the friction coefficient of the seat surface and the thread surface too small, and the friction coefficient is stabilized, compared with the conventional film of the molybdenum disulfide monomer. . [Example 1] (Example 1) A fluorine-based resin in which an organic binder was dispersed was applied to a screw surface and a seating surface of a clamping lock bolt to form a solid film of a film. (Comparative Example 1) A disulfide-coated molybdenum disulfide film was formed by applying a disulfide to a screw surface and a seating surface of a clamping lock bolt. 1343457 (Comparative Example 2) A conventional clamping lock bolt that does not form a film on the thread surface and the seat surface. The above-mentioned bolts (number of samples: 6 each) were used for the locking test to compare the stabilizing characteristics of the locking force. The results are shown in Fig. 6. In the table of Fig. 6, the vertical axis represents the torque coefficient value, and the horizontal axis represents the sample number. As shown in Fig. 2, in the first embodiment, the deviation of the torque coefficient values was small as compared with the comparative example 2 in which the film was not formed. From the results, the axial force of each sample was uniform. In Comparative Example 1 in which the molybdenum disulfide film was formed, the torque coefficient value was small, but the torque coefficient value was small as compared with Example 1 and Comparative Example 2. Therefore, if the locking torque is the same as that of the conventional bolt which does not form a film, the axial force becomes too large, and there is a possibility that the shaft fixing portion or the female screw is broken. From the above results, it is understood that the embodiment 丨 has the same degree of friction coefficient as that of the conventional bolt in which the film is not formed, and at the same time, the deviation of the friction coefficient is smaller than that of the conventional one to stabilize the locking force. Further, in the example, the solid (four) film was not peeled off once, but could be reused several times or more. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front elevational view of a coupling according to a first embodiment of the present invention. Fig. 2 is a view showing a shaft fixing portion of the coupling according to the first embodiment of the present invention, and (4) is a view of the shaft fixing portion as viewed from the front, and (4) a fixed portion as viewed from the radial direction. Fig. 3 is a front view of the shaft fixing portion according to the second embodiment of the present invention viewed from the axial direction. 12 1343457. Fig. 4 is a front view of the third embodiment of the present invention. The front view of the flexible coupling is not known, and (b) is the transmission of the conventional flexible coupling ®, ^ wall. The relative positional relationship of the axis direction of the 卩 is shown in Fig. 4 (4). Fig. 6 is a view showing the use of the embossed red in the present invention. . # 1. ^ ^ ^ A graph of the results of the locking test of the locking bolts for the coupling. [Main component symbol description] 1, 10, 100: Coupling
20、30、200、300 :軸固定部 22、32 :軸孔部 52 :夾緊用鎖緊螺栓 50、500 :連結機構 20a、200a :傳達用壁部 28 :開縫 24、34、240、340 :軸垂直方向開縫 60 :中間體20, 30, 200, 300: shaft fixing portions 22, 32: shaft hole portion 52: clamping bolts 50, 500 for fastening: coupling mechanisms 20a, 200a: communication wall portion 28: slits 24, 34, 240, 340: Axis vertical slit 60: Intermediate
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