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1. 发明公开

EP3081812A1 INTERNALLY MESHING GEAR PUMP 审中-公开
标题翻译：互联互助
公开(公告)号：EP3081812A1
公开(公告)日：2016-10-19
申请号：EP14869865.7
申请日：2014-12-10
申请人： NTN Corporation
发明人： ISHII, Takuya , ASADA, Hajime
IPC分类号： F04C2/10 , F04C15/00 , F04C29/02 , F16C17/02 , F16C17/04 , F16C17/10 , F16C33/20
CPC分类号： F04C2/102 , F04C11/005 , F04C15/0088 , F04C18/0215 , F04C29/025 , F04C2230/21 , F04C2230/60 , F04C2240/20 , F04C2240/50 , F04C2240/60 , F05C2225/08 , F16C17/107 , F16C33/1065 , F16C33/205 , F16C2206/06 , F16C2208/02 , F16C2208/22 , F16C2208/32 , F16C2208/36 , F16C2220/04 , F16C2360/42
摘要： Provided is an internal gear pump integrally provided with a plain bearing requiring fewer machining steps, allowing inexpensive manufacture, and offering a highly stable seizing property. An internal gear pump (1) comprises: a trochoid (4), in which an inner rotor (3) having a plurality of outer teeth is eccentrically and rotatably accommodated in an outer rotor (2) having a plurality of inner teeth, the outer teeth meshing with the inner teeth, and in which a suction-side chamber for suctioning liquid and a discharge-side chamber for discharging the liquid that has been suctioned into the suction-side chamber are formed between the inner teeth and outer teeth; a drive shaft (9) fixed to the inner rotor (3); a casing (5) in which is formed a recess (5a) for accommodating the trochoid (4); and a cover (6) for closing off the recess (5a) of the casing (5). The cover (6) has a plain bearing part (11) for rotatably supporting the drive shaft (9), and the plain bearing part (11) is formed by injection-molding a thermoplastic resin composition directly onto the cover (6).
摘要翻译：提供一体的内齿轮泵，其具有需要较少加工步骤的滑动轴承，允许便宜的制造，并且提供高度稳定的抓住性能。内齿轮泵（1）包括：摆线（4），其中具有多个外齿的内转子（3）偏心并可旋转地容纳在具有多个内齿的外转子（2）中，外齿轮在内齿和外齿之间形成有与内齿啮合的齿，并且在内齿和外齿之间形成有用于抽吸液体的吸入侧室和用于排出被吸入吸入侧室中的液体的排出侧室; 固定在内转子（3）上的驱动轴（9）; 壳体（5），其中形成有用于容纳所述次摆线（4）的凹部（5a）; 以及用于封闭壳体（5）的凹部（5a）的盖（6）。盖（6）具有用于可旋转地支撑驱动轴（9）的滑动轴承部（11），并且通过将热塑性树脂组合物直接注射成型到盖（6）上形成滑动轴承部（11）。

2. 发明授权

EP2896833B1 INTERNAL GEAR PUMP 有权
公开(公告)号：EP2896833B1
公开(公告)日：2019-04-17
申请号：EP13828673.7
申请日：2013-07-26
申请人： NTN Corporation
发明人： ISHII, Takuya , SHIMODA, Masato , ASADA, Hajime , HATTORI, Kei
IPC分类号： F01C21/10 , F04C2/10 , F04C2/08

3. 发明公开

EP2896833A1 INTERNAL GEAR PUMP 有权
标题翻译： INTERNE GETRIEBEPUMPE
公开(公告)号：EP2896833A1
公开(公告)日：2015-07-22
申请号：EP13828673.7
申请日：2013-07-26
申请人： NTN Corporation
发明人： ISHII, Takuya , SHIMODA, Masato , ASADA, Hajime , HATTORI, Kei
IPC分类号： F04C2/10 , F04C15/00
CPC分类号： F04C2/14 , F01C21/10 , F04C2/086 , F04C2/102 , F04C11/005 , F04C15/06 , F04C2210/14 , F04C2230/21 , F04C2230/22 , F04C2230/231 , F04C2240/51 , F05C2253/20
摘要： Provided is an internal gear pump requiring fewer machining steps, allowing inexpensive manufacture, and offering high safety from the standpoint of function. The internal gear pump 1 comprises: a trochoid 4 in which an inner rotor 3 having a plurality of outer teeth is eccentrically and rotatably accommodated in an outer rotor 2 having a plurality of inner teeth, the outer teeth meshing with the inner teeth, and in which a suction-side chamber for suctioning liquid and a discharge-side chamber for discharging liquid that has been suctioned into the suction-side chamber are formed in between the inner teeth and outer teeth; a casing 5 in which is formed a recess 5a for accommodating the trochoid 4; and a cover 6 for closing off the recess 5a of the casing 5. At least some of the casing 5 is a body injection-molded from a resin composition. The invention also comprises a groove 5d in a portion of the recess 5a of the casing 5 in which the outer periphery is sealed, with a sealing ring 13 installed therein, and bushings 7 made from sintered metal that are provided integrally during injection molding in bolt fixing hole portions.
摘要翻译：提供了一种内齿轮泵，其需要较少的加工步骤，允许廉价的制造，并且从功能的角度提供高安全性。内齿轮泵1包括：次摆线4，其中具有多个外齿的内转子3偏心并可旋转地容纳在具有多个内齿的外转子2中，外齿与内齿啮合，在内齿和外齿之间形成有用于吸入液体的吸入侧室和用于排出被吸入吸入侧室的液体的排出侧室; 壳体5，其形成有用于容纳次摆线4的凹部5a; 以及用于封闭壳体5的凹部5a的盖6。壳体5中的至少一个是从树脂组合物注射成型的主体。本发明还包括在壳体5的凹部5a的一部分中的凹槽5d，其中外周被密封，其中安装有密封环13，以及由金属制成的衬套7，其在注射成型期间一体地设置在螺栓中固定孔部分。

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