公开(公告)号：US4987672A

公开(公告)日：1991-01-29

申请号：US386273

申请日：1989-07-28

申请人： Shuniti Honda ,  Toshimitsu Shida

发明人： Shuniti Honda ,  Toshimitsu Shida

IPC分类号： B21K25/00 ,  B23P11/00

CPC分类号： B21K25/00 ,  B23P11/00 ,  Y10T29/4927 ,  Y10T29/49915 ,  Y10T29/49938

摘要： The present invention relates to a method of partititioning the internal space of a thin-walled cylindrical member by securing a thin-walled partition member in place within the cylindrical member by means of calking.The method of the invention comprises the steps of: inserting a circular partition member into the hollow cylindrical member, the partititon member having a circular plate portion and a rim portion axially extending from one side of the periphery of the circular plate portion, the hollow cylindrical member being formed therein with a space portion of larger diameter and a space portion of smaller diameter, the portion of larger diameter being formed at its end adjacent to the portion of smaller diameter with an annular groove; placing the partitition member on a shoulder face formed between the two space portions so that the circular plate portion comes in contact with the shoulder face; and applying an axial force to the end face of the rim portion of the partition member to cause the rim portion to deform so that a portion of the rim portion penetrates into the annular groove, the partition member being thereby tightly secured by means of calking to the annular groove and consequently to the hollow cylindrical member.Accordingly, the rim portion of the partition member can be tightly secured in place within the cylindrical member without applying a substantial radial force to the wall of the cylindrical member and, accordingly, the cylindrical member, particularly the outer surface thereof, will be subject to little deformation during the securing process of the partition member. Therefore, in case that the cylindrical member serves as a piston which has to be slidably mounted in the bore of a guide member, it becomes unnecessary, unlike the case of the conventional method, to finish the outer surface of the piston by grinding after the securing process of the partition member.In addition, since the deformed rim portion remains generally cylindrical and consequently enhances the overall rigidity of the partition member itself, the partition member may be formed from a thin plate.

公开(公告)号：US4986166A

公开(公告)日：1991-01-22

申请号：US412500

申请日：1989-09-26

申请人： Toshimitsu Shida

发明人： Toshimitsu Shida

IPC分类号： F01L1/24 ,  F01L1/25

CPC分类号： F01L1/25

摘要： The present invention relates to a hydraulic valve lash adjuster with which a cam engages directly and in which an oil-introducing chamber can be easily cleaned by a fluid or gas jet stream. In the valve lash adjuster in accordance with the present invention, the cylinder sleeve is formed through its lateral wall with a plurality of openings, and an annular oil-introducing chamber defined between the body and cylinder sleeve is communicated through the openings with the reservoir and consequently with the high pressure chamber. With the above construction of the invention, an extraneous substance such as chips and particles can be removed from the oil-introducing chamber along a fluid jet stream. Thus, since the oil-introducing chamber can be easily and perfectly cleaned by a jet stream during the manufacturing process and moreover during any overhaul work thereafter, reliability and maintainability of the product is markedly improved.

公开(公告)号：US4887566A

公开(公告)日：1989-12-19

申请号：US332360

申请日：1989-04-03

申请人： Toshimitsu Shida

发明人： Toshimitsu Shida

IPC分类号： F01L1/24

CPC分类号： F01L1/2405 ,  F01L2103/00

摘要： The present invention relates to a hydraulic valve lash adjuster which is capable of storing a large quantity of oil therein and exhibits high resistance to wear. In the valve lash adjuster in accordance with the invention, the plunger comprises an upper plunger portion and a lower plunger portion, at least a portion of a partition member extends over the joint between the upper and lower plunger portions, and the upper plunger portion being welded to the lower plunger portion by projection welding so that the partition member is deformed inward by bulging of the welded portion to fix the partition member within the plunger. Accordingly, the upper and lower plunger portions are welded together by projection welding, and simultaneously the partition member is sealingly fixed within the plunger. The plunger thus formed is surface hardened by quenching or carburizing. With the above construction of the invention, therefore, the hardness of the outer surface of the plunger is not impaired and the residual stresses generated by welding do not degrade the resistance to wear and fatigue.

摘要翻译： 液压阀间隙调节器技术领域本发明涉及一种液压阀间隙调节器，其能够在其中储存大量油并且具有高耐磨性。 在根据本发明的阀间隙调节器中，柱塞包括上柱塞部分和下柱塞部分，分隔件的至少一部分在上和下柱塞部分之间的接头上延伸，并且上柱塞部分为 通过突起焊接焊接到下部柱塞部分，使得分隔构件通过焊接部分的凸起向内变形，以将分隔构件固定在柱塞内。 因此，通过突起焊接将上下柱塞部分焊接在一起，同时将分隔件密封地固定在柱塞内。 这样形成的柱塞通过淬火或渗碳进行表面硬化。 因此，在本发明的上述结构中，不影响柱塞的外表面的硬度，并且焊接产生的残余应力不会降低耐磨性和疲劳性。

公开(公告)号：US4920935A

公开(公告)日：1990-05-01

申请号：US332598

申请日：1989-04-03

申请人： Toshimitsu Shida

发明人： Toshimitsu Shida

IPC分类号： F01L1/24

CPC分类号： F01L1/2405 ,  F01L2103/00

摘要： The present invention relates to a hydraulic valve lash adjuster which is capable of storing a large quantity of oil therein and exhibits high resistance to wear. In the valve lash adjuster in accordance with the invention, the plunger comprises an upper plunger portion and a lower plunger portion, and the upper and lower plunger portions are welded together with the partition member so that the partition member is sealingly fixed within the plunger. Accordingly, the upper and lower plunger portions are welded together, and simultaneously the partition member is sealingly fixed within the plunger. The plunger thus formed is surface hardened by quenching or carburizing. With the above construction of the invention, therefore, the hardness of the outer surface of the plunger is not impaired and the residual stresses generated by welding do not degrade the resistance to wear and fatigue.

摘要翻译： 液压阀间隙调节器技术领域本发明涉及一种液压阀间隙调节器，其能够在其中储存大量油并且具有高耐磨性。 在根据本发明的阀间隙调节器中，柱塞包括上柱塞部分和下柱塞部分，并且上柱塞部分和下柱塞部分与分隔部件焊接在一起，使得分隔部件密封地固定在柱塞内。 因此，将上下柱塞部焊接在一起，同时将分隔构件密封地固定在柱塞内。 这样形成的柱塞通过淬火或渗碳进行表面硬化。 因此，在本发明的上述结构中，不影响柱塞的外表面的硬度，并且焊接产生的残余应力不会降低耐磨性和疲劳性。

公开(公告)号：US4902359A

公开(公告)日：1990-02-20

申请号：US241786

申请日：1988-09-06

申请人： Yukoh Takeuchi ,  Yoshihisa Kato ,  Hitoshi Hayakawa ,  Masaru Nagata ,  Shinji Nakayama

发明人： Yukoh Takeuchi ,  Yoshihisa Kato ,  Hitoshi Hayakawa ,  Masaru Nagata ,  Shinji Nakayama

IPC分类号： B23K35/32 ,  C22F1/18 ,  C23C4/06 ,  C23C4/08 ,  C23C4/10 ,  C23C4/12 ,  C23C26/02

CPC分类号： C22F1/183 ,  B23K35/325 ,  C23C26/02 ,  C23C4/06 ,  C23C4/08 ,  C23C4/10 ,  C23C4/134 ,  Y10S148/903

摘要： A wear-resistant titanium or titanium-alloy member adapted for use as a poppet valve, rocker arm, etc., of an internal combustion engine, which requires lightness in weight and good wear resistance, and a method for manufacturing the member. The surface of the titanium or titanium-alloy member is given a Vickers hardness number of 390 to 1,200, preferably 400 to 800, and a hardened layer depth of 0.1 to 2.0 mm, preferably 0.3 to 1.5 mm, by being melt-hardened while being supplied with hardening elements.