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公开(公告)号：JP2017075550A
公开(公告)日：2017-04-20
申请号：JP2015202551
申请日：2015-10-14
摘要： 【課題】軸流ファンの性能の向上を図りながら製造コストを低減すると共に、軸流ファンの小型化を図る。 【解決手段】内部に動翼3が配置され、流路4cを形成する円筒状のケーシング4と、ケーシングの動翼の近傍が外側に環状に突出することにより形成されるセパレータ流路5aと、セパレータ流路とケーシングの流路との境界面に位置し、動翼の上流側先端部と対向する第1の開口O1と、そのさらに上流側の第2の開口O2とを形成する円環5bと、円環の外周面と外周面と相対向するケーシングの内周面に、板面がケーシングの軸線に対して平行になるように固定される矩形平板状の整流羽根5cとを有するエアセパレータ5とを備え、整流羽根の板面と、整流羽根が円環の外周面に当接する線で円環に接する面とのなす角を28度以上44度以下としたことを特徴とする軸流ファン1。 【選択図】図1
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公开(公告)号：JP2004218686A
公开(公告)日：2004-08-05
申请号：JP2003004544
申请日：2003-01-10
申请人： Nakamura Jiko Co Ltd , 株式会社中村自工
发明人： SAGAWA TAKESHI , SHIMOYAMA KATSUHISA , SAITO REIJI
IPC分类号： F16D3/26
摘要： PROBLEM TO BE SOLVED: To provide a cross shaft of a universal joint having high strength in the cross shaft, having a long service life of a bearing, and having a simple structure of a seal.
SOLUTION: In this cross shaft of the universal joint provided with four shafts which become inner rings of the bottomed cylindrical bearing protrudedly formed in a cross shape in a drum, the outer peripheral wall face of a root to the drum of the shaft is formed of a curved face formed at a first radius of curvature ρ
1 of a rate of 7.0 to 9.0 % of the rotational outer diameter of the universal joint and a composite curved face on which curved faces each formed at a second radius of curvature ρ
2 of a rate of 1.0 to 1.5 % of the rotational outer diameter of the universal joint. That is, the first radius of curvature ρ
1 and the second radius of curvature ρ
2 are smaller than a conventional radius of curvature to maintain substantially the same load applied on the curved face of the first radius of curvature ρ
1 as a conventional load. A load applied on the curved face of the second radius of curvature ρ
2 is smaller than the load applied on the curved face of the first radius of curvature ρ
1 .
COPYRIGHT: (C)2004,JPO&NCIPI-
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公开(公告)号：JP2016138320A
公开(公告)日：2016-08-04
申请号：JP2015014761
申请日：2015-01-28
摘要： 【課題】NiCrMo鋼の効率的な微細組織化を可能にする。 【解決手段】質量百分率で、C:0.10〜0.30%未満、Si:0.05〜0.30%未満、Mn:0.20〜1.00%、P:0.015%以下、S:0.015%以下、Cr:1.50〜2.00%、Mo:0.10〜0.50%、Ni:2.50〜4.00%、Al:0.01〜0.03%、N:0.005〜0.015%を有し、残部がFe及び不可避的不純物からなる組成を有し、マルテンサイト組織またはベイナイト組織、もしくはこれらの混合組織からなり、微細組織化とするための調質を効率的にする。 【選択図】なし
摘要翻译： 要解决的问题：为了能够有效地精细地构造NiCrMo钢。溶液：其质量百分比含有C：0.10〜小于0.30％，Si：0.05〜小于0.30％，Mn：0.20〜1.00 ％，P：0.015％以下，S：0.015％以下，Cr：1.50〜2.00％，Mo：0.10〜0.50％，Ni：2.50〜4.00％，Al：0.01〜0.03％，N：0.005〜0.015％ 余量为不可避免的杂质，由马氏体组织或贝氏体组织或其组合结构组成，精炼结构有效。精选图：无
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公开(公告)号：JP2011038600A
公开(公告)日：2011-02-24
申请号：JP2009186990
申请日：2009-08-12
申请人： Nakamura Jiko Co Ltd , 株式会社中村自工
摘要： PROBLEM TO BE SOLVED: To improve surface strength (hardness and residual compressive stress) in a rolling part or a sliding part, to prevent shortage of oil film, and to improve durability with a simple method. SOLUTION: First, outer shape machining is performed by roughing such as lathe turning with respect to a component material of a bearing 13 and a roller shaft 14 made of high carbon chromium bearing steel (outer shape machining process; step S1). Next, carburizing-quenching-tempering and/or high frequency induction hardening is carried out (heat treatment process; step S2). After that, finishing such as polishing is performed (finishing process; step S3), and fine particle peening is performed with respect to the component material after finishing (surface treatment process; step S4). By performing the processes, recessions and projections having surface hardness of 800 HV or more, residual compressive stress in 30 μm from the surface of equal to or not more than -800 MPa, and surface roughness of about Ra 0.4 μm are formed on a surface of the component material. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译： 要解决的问题：为了改善滚动部件或滑动部件中的表面强度（硬度和残余压缩应力），以防止油膜短缺，并且通过简单的方法提高耐久性。 解决方案：首先，通过相对于轴承13的部件材料的车床转动和由高碳铬轴承钢（外形加工工艺;步骤S1）制成的辊轴14进行粗加工来进行外形加工。 接下来，进行渗碳淬火回火和/或高频感应淬火（热处理工序; S2）。 之后，进行抛光等精加工（精加工;步骤S3），对精加工后的成分材料进行细粒喷丸处理（表面处理工序;步骤S4）。 通过进行具有800HV以上的表面硬度的工序，凹部和突起，从表面等于或不大于-800MPa的残余压应力和约Ra0.4μm的表面粗糙度形成在表面 的组分材料。 版权所有（C）2011，JPO＆INPIT
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公开(公告)号：JP2011021645A
公开(公告)日：2011-02-03
申请号：JP2009165682
申请日：2009-07-14
申请人： Nakamura Jiko Co Ltd , 株式会社中村自工
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of a fault such as damage to a component of a coupling, a member connected to a shaft, or the like even if excessive circumferential and axial loads are applied to the shaft to which the coupling is to be connected. SOLUTION: When a load in the thrust direction applied to a rotary shaft 10 or a second rotary shaft 24 becomes excessive, a slip in the thrust direction occurs in a contact face between a cylindrical shaft 11 and a sleeve 17. A cylindrical rotation body 13 mounted to the cylindrical shaft 11, and a shear lug 22 mounted to the sleeve 17, then move relatively in the thrust direction. A pipe 21 mounted to the cylindrical rotation body 13 is thereby broken by the inner peripheral end of a cutting hole 23 of the shear lug 22 bored in the sleeve 17, and liquid in a liquid chamber 14 of a coupling body 13 is jetted out of a discharge port 16 by this breakage to lower the internal pressure in the liquid chamber 14. Consequently, as the sleeve 17 is released from the cylindrical shaft 11, an overload state is not transmitted to the component and the member connected to the shaft. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译： 要解决的问题：为了防止发生诸如对联轴器的部件，连接到轴的部件等的故障的发生，即使过大的周向和轴向载荷施加到轴上， 要连接耦合。 解决方案：当施加到旋转轴10或第二旋转轴24的推力方向上的负载变得过大时，在圆筒形轴11和套筒17之间的接触面中产生推力方向上的滑动。 安装到圆柱形轴11的旋转体13和安装到套筒17上的剪切凸耳22然后相对于推力方向移动。 安装在圆筒形旋转体13上的管21被套筒17内钻出的剪切孔22的切割孔23的内周端部分断开，连接体13的液体室14内的液体被排出 排出口16通过这种断裂降低液体室14中的内部压力。因此，当套筒17从圆柱形轴11释放时，过载状态不会传递到与轴连接的部件和构件。 版权所有（C）2011，JPO＆INPIT
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公开(公告)号：JP2011017412A
公开(公告)日：2011-01-27
申请号：JP2009163627
申请日：2009-07-10
申请人： Nakamura Jiko Co Ltd , 株式会社中村自工
IPC分类号： F16D3/41
摘要： PROBLEM TO BE SOLVED: To improve stability and reliability by preventing a bearing from being baked and damaged by surely preventing a lubricating oil from being unevenly distributed in each oil hole of a cross shaft with a simple constitution.SOLUTION: When supplied from each oil supply nipple 10, a lubricating oil such as grease reaches an oil hole 8 through an oil supply hole 9 and communication passage 11, passes through an oil groove part between a top plate and a bottom plate 6 of a bearing 4 from the oil hole 8 and is fed to a roller shaft 5 of the bearing 4. Hence, the lubricating oil is brought into an independent state in each oil hole 8 and is prevented from being flown from one oil hole 8 to the other oil hole 8. Even when the universal joint becomes high temperature and the lubricating oil softens to easily move downward due to gravity, therefore, for instance, the lubricating oil is prevented from being moved to the oil hole 8 in the downward position to be deviated due to self weight and from being unevenly distributed in some part of oil holes 8 due to a centrifugal force due to joint rotation at startup.
摘要翻译： 要解决的问题：为了提高稳定性和可靠性，通过以简单的结构可靠地防止润滑油不均匀地分布在横轴的每个油孔中，从而防止轴承受到烘烤和损坏。解决方案：当从每个油源 乳头10，油脂等润滑油通过供油孔9和连通路11到达油孔8，从油孔8穿过轴承4的顶板和底板6之间的油槽部分， 被供给到轴承4的辊轴5.因此，润滑油在每个油孔8中处于独立状态，并且防止其从一个油孔8流到另一个油孔8。 接头成为高温，润滑油由于重力而软化，容易向下移动，因此例如防止润滑油向下移动到油孔8，由于t而偏离 并且由于由于启动时的关节旋转引起的离心力而在油孔8的一些部分中不均匀地分布。
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公开(公告)号：JP2005351323A
公开(公告)日：2005-12-22
申请号：JP2004170895
申请日：2004-06-09
申请人： Nakamura Jiko Co Ltd , 株式会社中村自工
摘要： PROBLEM TO BE SOLVED: To provide a universal joint to lengthen the lifetime of a bearing.
SOLUTION: A rolling element 39 held in a bearing hole 4 of a split yoke 3 is fitted into an inner ring 41 of a shaft section 1a, and a bottom plate 38 sandwiched between a first thrust receiving plate 36 and a second thrust receiving plate 40 is fitted between the shaft section 1a and the bottom of the bearing hole 4, so that the bottom side inner peripheral edge of an outer ring 37 is inserted in the bottom of the bearing hole 4 with the outer peripheral edge of the bottom plate 38, and the outer ring 37 is secured in the bearing hole 4. A securing means of the outer ring 37 to an arm section 3c is installed between the shaft section 1a of a cross shaft 1 and the bottom of the bearing hole 4. Without the need for providing a space of the securing means in the shaft section 1a of the cross shaft 1 which is constant in the centerline direction length, the residue of the shaft section 1a becomes longer by the space one, and the bearing 35 inserted between the shaft section 1a of the cross shaft 1 and the arm section 3c of the split yoke 3 widens so that the load applied on the bearing 35 relatively lessens so as to lengthen the lifetime of the bearing 35.
COPYRIGHT: (C)2006,JPO&NCIPI摘要翻译： 要解决的问题：提供万向接头以延长轴承的使用寿命。 解决方案：保持在分接轭3的轴承孔4中的滚动元件39装配到轴部1a的内圈41中，并且底板38夹在第一推力承受板36和第二推力 接收板40装配在轴部1a和轴承孔4的底部之间，使得外圈37的底侧内周边缘在轴承孔4的底部插入底部的外周边缘 板38，外圈37固定在轴承孔4中。在横轴1的轴部1a和轴承孔4的底部之间安装有将外圈37固定到臂部3c的固定装置。 在不需要在中心线方向长度恒定的横轴1的轴部1a中设置固定装置的空间的情况下，轴部1a的残留物由于空间而变长，轴承35插入在 c的轴部1a 卷轴1和分叉轭3的臂部3c变宽，使得施加在轴承35上的载荷相对减小，以延长轴承35的寿命。版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP3113221U
公开(公告)日：2005-09-02
申请号：JP2005003943
申请日：2005-06-01
申请人： 株式会社中村自工
摘要： 【課題】軸受部分における良好なダストシール，オイルシール機能を長期にわたって維持する。
【解決手段】ダストシール部材４１を、弾性体のシール材４１ａを金属製の環状体４１ｂの外周部４１ｃおよび外周近傍部４１ｄに接着して構成にし、ダストシール部材４１における外周部部分を軸受孔４の内側部と外輪２１との間で挟持し、かつダストシール部材４１における外周近傍部部分を外輪２１の端部と止め輪４３との間で挟持することによって、ダストシール部材４１を軸受２０の端部部分に固定する。 そして、ダストシール部材４１の二股状をなす一端部を内輪２３に接触し、他端部を軸受孔４の内壁に接触することにより、軸受２０の端部、すなわち軸受孔４の下端部を密閉する。
【選択図】図２
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