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公开(公告)号：US20070155554A1
公开(公告)日：2007-07-05
申请号：US10585617
申请日：2005-01-26
CPC分类号： F16H7/1236 , F16H2007/0806 , F16H2007/0814 , F16H2007/0859
摘要： An auto-tensioner for engine accessories is proposed which can smoothly follow shrinkage and expansion of a belt and which can minimize the amplitude of vibration of the belt. A seal member 13 is mounted to a cylinder 11 at its top open end. A rod 16 slidably extends through the seal member 13. A return spring 21 biases the rod 16 outwardly. A plunger 24 is slidably received in a sleeve 12 having a bottom and received in the cylinder 11, and is connected to the bottom of the rod 16. The plunger 24 has a passage 27 through which a lower pressure chamber 25 and an upper reservoir chamber 26 communicate with each other. A check valve 28 is provided at the passage 27. A return chamber 29 is defined under the sleeve 12 so as to communicate with the reservoir chamber 26. In the bottom of the sleeve 12, a valve hole 31 is formed through which the return chamber 29 communicates with the pressure chamber 25. A relief valve 32 is provided at the valve hole 31. The relief valve 32 prevents the pressure in the pressure chamber 25 from rising above a set pressure, thereby preventing an excessive increase in the tension of the belt. This makes it possible to reduce oil leak gaps defined between the sliding surfaces of the sleeve 12 and the plunger 24, thereby keeping the vibration amplitude of the belt. This improves the responsiveness of the auto-tensioner to the expansion of the belt while the relief valve 32 is open.
摘要翻译： 提出了一种用于发动机附件的自动张紧器，其可以顺利地跟随带的收缩和膨胀，并且可以最小化带的振动幅度。 密封构件13在其顶部开口端安装到气缸11。 杆16可滑动地延伸穿过密封构件13。 复位弹簧21向外偏压杆16。 柱塞24可滑动地容纳在具有底部并被容纳在气缸11中的套筒12中，并且连接到杆16的底部。 柱塞24具有通道27，下压力室25和上储存室26通过该通道27彼此连通。 止回阀28设置在通道27处。 返回室29被限定在套筒12下面，以便与储存室26连通。 在套筒12的底部形成有阀孔31，返回室29与压力室25连通。 安全阀32设置在阀孔31处。 安全阀32防止压力室25中的压力升高到设定压力以上，从而防止带的张力过度增加。 这使得可以减小限定在套筒12和柱塞24的滑动表面之间的漏油间隙，从而保持带的振动幅度。 这提高了安全阀32打开时自动张紧器对带的膨胀的响应性。
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公开(公告)号：US08961023B2
公开(公告)日：2015-02-24
申请号：US14000912
申请日：2012-02-20
CPC分类号： F16C33/6659 , F16C19/06 , F16C33/3875 , F16C33/3887 , F16C33/6674 , F16C33/6681 , F16C2208/58 , F16C2208/60 , F16C2226/74 , F16C2226/76 , F16C2240/30 , F16C2240/46 , F16C2361/61 , F16C2361/65
摘要： A ball bearing retainer includes two annular members that face each other in an axial direction. The two annular members have opposed surfaces each including hemispherical pockets that are formed at a plurality of positions in a circumferential direction and configured to receive balls. The opposed surfaces are snap-fitted to each other so as to couple the two annular members to each other with coupling portions provided at both circumferential end portions of each of the hemispherical pockets Inner peripheral surfaces of the hemispherical pockets of the two annular members and the opposed surfaces of the two annular members have recessed grooves that are opened by extending from radially inner surfaces of the two annular members and reaching radially outer surfaces of the two annular members.
摘要翻译： 滚珠轴承保持器包括沿轴向彼此面对的两个环形构件。 两个环形构件具有相对的表面，每个表面包括形成在圆周方向上的多个位置并被构造成接收球的半球形凹穴。 相对的表面彼此卡扣配合，以便将两个环形构件彼此连接，其中设置在每个半球形凹穴的两个圆周端部处的联接部分在两个环形构件的半球形凹穴的内周表面和 两个环形构件的相对表面具有通过从两个环形构件的径向内表面延伸并到达两个环形构件的径向外表面而敞开的凹槽。
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公开(公告)号：US20100284642A1
公开(公告)日：2010-11-11
申请号：US12811226
申请日：2009-01-19
申请人： Katsunori Mineno , Goro Nakao
发明人： Katsunori Mineno , Goro Nakao
IPC分类号： F16C33/58
CPC分类号： F16H55/48 , F16C19/06 , F16C33/586 , F16C35/067 , F16C37/007 , F16C2226/30 , F16C2361/63
摘要： The object is to improve heat dissipation ability of a rolling bearing while preventing creeping of a resin pulley.With two axially spaced apart circumferential grooves 13 formed in the radially outer surface of the outer race 12, the resin pulley 14 is integrally fixed to the outer race 12 by injection molding such that the end surfaces of the outer race 12 and both end portions of the radially outer surface of the outer race 12 are exposed. Since resin forming a boss portion 15 of the resin pulley 14 is engaged in the circumferential grooves 13, radially extending side walls of the circumferential grooves 13 contact radial surfaces of the resin pulley 14. This prevents creeping of the resin pulley 14. Since the exposed end surfaces and radially outer surface of the outer race 12 act as heat dissipation surfaces, it is possible to improve the ability to dissipate heat from the bearing.
摘要翻译： 本发明的目的是提高滚动轴承的散热能力，同时防止树脂滑轮的蠕变。 通过形成在外座圈12的径向外表面中的两个轴向间隔开的圆周槽13，树脂滑轮14通过注射成型一体地固定到外圈12，使得外圈12的端表面和两个端部 外圈12的径向外表面露出。 由于形成树脂滑轮14的凸台部15的树脂与圆周槽13接合，所以周向槽13的径向延伸的侧壁与树脂滑轮14的径向表面相接触。这防止了树脂滑轮14的蠕变。 外圈12的端面和径向外表面作为散热面，可以提高从轴承散热的能力。
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公开(公告)号：US20090298630A1
公开(公告)日：2009-12-03
申请号：US12472493
申请日：2009-05-27
申请人： Katsunori MINENO , Goro Nakao
发明人： Katsunori MINENO , Goro Nakao
IPC分类号： F16H55/36
CPC分类号： F16C35/073 , F16C19/06 , F16C35/063 , F16C2361/63 , F16H7/20 , F16H55/36
摘要： A pulley fixing structure includes a pulley with a ball bearing, and a bracket having a shaft portion on which the inner race of the bearing is pressed with an interference fit. The thermal expansion of the radially outer portion of the shaft portion of the bracket is larger than that of the radially inner portion of the inner race of the bearing. The interference thus decreases at a low temperature. Reduction of the radial clearance of the bearing 1 by pressing is thus compensated, and cold weather noise can be prevented while reducing the number of required parts and making the assembly process simple.
摘要翻译： 滑轮固定结构包括具有滚珠轴承的滑轮和具有轴部的支架，轴承的内圈以过盈配合被按压在该轴部上。 托架的轴部的径向外部的热膨胀大于轴承的内圈的径向内部的热膨胀。 因此，干扰在低温下降低。 因此通过按压来减少轴承1的径向间隙，并且可以在减少所需部件的数量并简化组装过程的同时防止寒冷的天气噪音。
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公开(公告)号：US20130330031A1
公开(公告)日：2013-12-12
申请号：US14000912
申请日：2012-02-20
IPC分类号： F16C33/66
CPC分类号： F16C33/6659 , F16C19/06 , F16C33/3875 , F16C33/3887 , F16C33/6674 , F16C33/6681 , F16C2208/58 , F16C2208/60 , F16C2226/74 , F16C2226/76 , F16C2240/30 , F16C2240/46 , F16C2361/61 , F16C2361/65
摘要： Provided is a ball bearing retainer, comprising two annular members (10) that face each other in an axial direction, the two annular members (10) having opposed surfaces (11) each comprising hemispherical pockets (12) that are formed at a plurality of positions in a circumferential direction and configured to receive balls, the opposed surfaces (11) being snap-fitted to each other so as to couple the two annular members (10) to each other with coupling portions (18) provided at both circumferential end portions of each of the hemispherical pockets (12). Inner peripheral surfaces of the hemispherical pockets (12) of the two annular members (10) and the opposed surfaces (11) of the two annular members (10) comprise recessed grooves (19, 20) that are opened by extending from radially inner surfaces of the two annular members (10) and reaching radially outer surfaces of the two annular members (10).
摘要翻译： 提供一种滚珠轴承保持器，包括在轴向方向彼此面对的两个环形构件（10），两个环形构件（10）具有相对的表面（11），每个环形构件包括半球形凹穴（12），其形成在多个 在圆周方向上的位置并且构造成接收球，相对的表面（11）彼此卡扣配合，以便将两个环形构件（10）彼此耦合，所述联接部分（18）设置在两个周向端部 的每个半球形凹穴（12）。 两个环形构件（10）的半球形凹穴（12）和两个环形构件（10）的相对表面（11）的内周表面包括凹槽（19,20），其通过从径向内表面 的两个环形构件（10）的两个环形构件（10）的径向外表面。
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公开(公告)号：US20130016938A1
公开(公告)日：2013-01-17
申请号：US13637369
申请日：2011-03-18
申请人： Takahiro Okada , Katsunori Mineno
发明人： Takahiro Okada , Katsunori Mineno
CPC分类号： F16C33/32 , F16C19/06 , F16C33/62 , F16C33/64 , F16C2204/70 , F16C2361/61
摘要： A rolling bearing is disclosed of which the lifespan is increased by reducing brittle flaking and impression-induced flaking on the raceways of inner and outer races and the rolling elements. Steel containing 1.80-1.89% by weight of chrome (brittle flaking-resistant steel) is subjected to carbonitriding and then to hardening and tempering. The chrome reduces generation of white layers which are aggregates of carbon, thus reducing brittle flaking on e.g. the raceways (1a, 4a) due to the white layers. A residual austenite region (5) that forms when the steel is hardened and tempered increases toughness of the steel surface, thus reducing impression-induced flaking due to foreign matter such as wear dust. By reducing both brittle flaking and impression-induced flaking, it is possible to extend the lifespan of the bearing, and reduce maintenance cost such as the cost for changing lubricating oil.
摘要翻译： 公开了一种滚动轴承，其寿命通过减少内圈和外圈和滚动元件的滚道上的脆性剥落和压印引起的剥落而增加。 将含有1.80-1.89重量％的铬（耐脆性耐剥离钢）的钢进行碳氮共渗，然后进行硬化和回火。 铬减少产生作为碳的聚集体的白色层，从而减少例如玻璃的脆性剥落。 由于白色层，导轨（1a，4a）。 当钢被硬化和回火时形成的残余奥氏体区域（5）增加钢表面的韧性，从而减少由于诸如磨损粉尘等异物引起的压痕引起的剥落。 通过减少脆性剥落和压印引起的剥落，可以延长轴承的寿命，并降低维护成本，例如改变润滑油的成本。
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