200416357 Π) 玫、發明說明 【發明所屬之技術領域】 本發明係使用於連結軸與軸之齒輪聯結器 【先前技術】 在於工作機械之連結上，以往就以齒輪聯結器來使用 於其接頭’（例如專利文獻1 )在於第3圖表示先前技術之 齒輪聯結器之要部之剖面圖。於第4圖表示第3圖之齒輪聯 結器之在於高速旋轉時之推力方向之內壓之狀態之要部之 剖面圖。 在於第3圖及第4圖中， 符號1係外齒輪，2係內齒輪，3係馬達軸，4係嚙合面 ，5係潤滑油，6係潤滑油池，7係潤滑油封入用Ο形環，8 係離心力，9，1 0係推力。 在於此種構成中，用於嚙合面4之潤滑用地被封入之 潤滑油係，在於高速旋轉中，由離心力而被推壓於外周方 向。該結果離心力8乃被分配爲，施加於外齒輪1之推力9 ，及施加於內齒輪之推力10。 惟在此種先前技術有下述之問題。 (1)推力（9)係施加於內齒輪1，而保持了內齒輪1， 因此例如成爲推壓工作機主軸，由而主軸發生變位使精度 惡化。 (2 )又，推力1 0係分別保持各齒輪1、2，因此例如作 用於馬達軸3以負載之形態作用於馬達之軸承，會縮短軸 -4- (2) (2)200416357 承之壽命或甚至構成軸承之燒損。 【發明內容】 本發明係爲了解決此問題所創作，提供一種可以提高 軸連結之精度，同時可以延長軸承之壽命之齒輪聯結器爲 目的。 爲了解決上述課題本發明乃在於具有：內齒輪與外齒 輪之，以間隙嵌合地嚙合地以資傳遞扭力’同時在於推力 方向可以滑移之構造，且在於該嚙合面之潤滑用之潤滑油 封入於內齒輪與外齒輪間具有間隙之構造之齒輪聯結器中 ，在於內齒輪之內面，設置了內齒輪與外齒輪之間隙之容 積以上之潤滑油池而構成者。 由而可以相殺（抵消）所發生之推力，防止推力之施 加於所保持之例如工作機主軸，或推力之作用於馬達軸。 如上所述，依本發明時，具有在於齒輪聯結器上可以 相殺之推力，而對於保持構件上不會施加推力地可以提高 精度而可以延長軸承之壽命之效果。 【實施方式】 下面依第1圖及第2圖說明本發明之實施例。 第1圖表示本發明之實施例之齒輪聯結器之要部剖面 圖。 第2圖表示第1圖之齒輪聯結器之在於高速旋轉時.之推 力方向之內壓之狀態之要部之剖面圖。 (3) (3)200416357 在於第1圖及第2圖中，1係外齒輪，2係內齒輪，3係 馬達軸，4係嚙合面，5係潤滑油，6係潤滑油池，7係封入 潤滑油用之〇形環，8係離心力，9，1〇係推力。 在此構成中，嚙合面4之潤滑用之潤滑油5係集合於潤 滑油池6。在本案中由於潤滑油池6之容積係設定於嚙合面 4之間隙之容積以上，所以潤滑油5係會進入於潤滑油池6 〇 潤滑油5係在於高速旋轉中，由離心力8而推壓於外周 方向。該結果，該離心力乃與以往一樣分配爲推力9及推 力1 〇。惟兩方均施加於內齒輪2，所以以內壓來相殺（抵消 )，對於齒輪之保持構件上不會有推力力之作用，所以可 以解決上述之先前技術之問題。 又，旋轉速度降低時，作用於潤滑油5之離心力8變小 而不會壓接於外周，潤滑油5會移動於嚙合面4，所以不會 使潤滑不良。 [產業上之利用可能性] 本發明係適用於連結軸與軸之齒輪聯結器，由而可以 提高軸連結之精度，同時可以延長軸承之壽命之齒輪聯結 器提供利用於製造齒輪聯結器之領域。 【圖式簡單說明】 第1圖表示本發明之實施例之齒輪聯結器之要部剖面 圖。 -6- (4) 200416357 第2圖表不第1圖之齒輪聯結器之在於高速旋轉時之推 力方向之內壓之狀態之要部之剖面圖。 第3圖表示先前技術之齒輪聯結器之要部之剖面圖。 第4圖表示第3圖之齒輪聯結器之在於高速旋轉時之推 力方向之內壓之狀態之要部之剖面圖。 [主要元件對照表] 1 外齒輪 2 內齒輪 3 馬達軸 4 嚙合面 5 潤滑油 6 潤滑油池 7 〇形環 8 離心力 9 推力 10 推力200416357 Π) Description of the invention [Technical field to which the invention belongs] The present invention is a gear coupling used to connect a shaft to a shaft [prior art] It is used for the connection of a work machine. In the past, a gear coupling was used for its joints' (For example, patent document 1) Sectional drawing of the principal part of the gear coupling of a prior art is shown in FIG. Fig. 4 is a cross-sectional view of a main part of the gear coupling of Fig. 3 in a state of internal pressure in a thrust direction during high-speed rotation. In Figures 3 and 4, the symbols 1 are external gears, 2 are internal gears, 3 are motor shafts, 4 are meshing surfaces, 5 are lubricants, 6 are lubricant pools, and 7 are lubricating oil seals. Ring, 8 series centrifugal force, 9, 10 series thrust. In such a configuration, the lubricating oil system sealed for the lubrication of the meshing surface 4 is pressed in the outer circumferential direction by centrifugal force during high-speed rotation. As a result, the centrifugal force 8 is divided into a thrust force 9 applied to the external gear 1 and a thrust force 10 applied to the internal gear. However, this prior art has the following problems. (1) Thrust force (9) is applied to the internal gear 1, and the internal gear 1 is held. Therefore, for example, it becomes a main shaft of a work machine, and the main shaft is displaced to deteriorate accuracy. (2) Also, the thrust 10 maintains each gear 1, 2 respectively. Therefore, for example, acting on the motor shaft 3 and acting on the bearing of the motor in the form of a load will shorten the life of the shaft -4- (2) (2) 200416357 bearing Or even the burning of the bearing. [Summary of the Invention] The present invention was created in order to solve this problem, and aims to provide a gear coupling that can improve the accuracy of the shaft connection and at the same time extend the life of the bearing. In order to solve the above-mentioned problem, the present invention includes a structure in which an internal gear and an external gear are engaged with each other with a gap to mesh with each other to transmit torque. At the same time, the structure can be slid in the thrust direction. The gear coupling having a structure having a gap between the internal gear and the external gear is constituted by providing a lubricating oil tank having a volume equal to or greater than the clearance between the internal gear and the external gear on the inner surface of the internal gear. This can counteract (cancel) the thrust that occurs, preventing the thrust from being applied to, for example, the main shaft of the working machine, or the thrust from acting on the motor shaft. As described above, according to the present invention, there is an effect that the thrust force can be matched with each other on the gear coupling, and the thrust can be applied to the holding member without increasing the accuracy and the bearing life can be extended. [Embodiment] An embodiment of the present invention will be described below with reference to Figs. 1 and 2. Fig. 1 is a sectional view of a main part of a gear coupling according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of a main part of the gear coupling of Fig. 1 in a state of internal pressure in a thrust direction during high-speed rotation. (3) (3) 200416357 In the first and second figures, 1 series of external gears, 2 series of internal gears, 3 series of motor shafts, 4 series of meshing surfaces, 5 series of lubricants, 6 series of lubricant pools, 7 series O-ring for sealing lubricating oil, 8 series centrifugal force and 9,10 series thrust. In this configuration, the lubricating oil 5 for lubricating the meshing surface 4 is collected in the lubricating oil pool 6. In this case, since the volume of the lubricating oil tank 6 is set to be greater than the volume of the gap of the engaging surface 4, the lubricating oil 5 series enters the lubricating oil tank 60. The lubricating oil 5 is in high-speed rotation and is pushed by the centrifugal force 8. In the direction of the periphery. As a result, the centrifugal force is distributed as thrust 9 and thrust 10 as in the past. However, both sides are applied to the internal gear 2 so that the internal pressure is used to kill each other (cancel), and there will be no thrust force on the holding member of the gear, so the above-mentioned problems of the prior art can be solved. In addition, when the rotation speed is reduced, the centrifugal force 8 acting on the lubricating oil 5 becomes small without being crimped to the outer periphery, and the lubricating oil 5 moves to the meshing surface 4, so that lubrication failure is not caused. [Industrial Applicability] The present invention is applicable to a gear coupling that connects a shaft to a shaft, thereby improving the accuracy of the shaft connection and at the same time extending the life of the bearing. The gear coupling provides use in the field of manufacturing gear couplings. . [Brief Description of the Drawings] Fig. 1 is a sectional view of a main part of a gear coupling according to an embodiment of the present invention. -6- (4) 200416357 Section 2 is a cross-sectional view of the main part of the gear coupling in Figure 2 and Figure 1 in the state of internal pressure in the thrust direction during high-speed rotation. FIG. 3 is a cross-sectional view of a main part of a conventional gear coupling. Fig. 4 is a cross-sectional view of a main part of the gear coupling of Fig. 3 in a state of internal pressure in a thrust direction during high-speed rotation. [Comparison table of main components] 1 External gear 2 Internal gear 3 Motor shaft 4 Engaging surface 5 Lubricant 6 Lubricant reservoir 7 O-ring 8 Centrifugal force 9 Thrust force 10 Thrust force