Patents by Inventor Chie OKAWA
Chie OKAWA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11504758Abstract: A hot press processing apparatus 1 includes: a heating step of heating a workpiece W; a pressing step of press-molding, by an upper die 11 and a lower die 12, the workpiece W heated in the heating step after loading the workpiece W between the upper die 11 and the lower die 12; and a cooling step of bringing the coolant into contact with a front surface of the workpiece W that is molded and placed in a pressed state by the pressing step, to thereby cool the workpiece W and place the workpiece W in a quenched state. In the hot press processing apparatus 1, the workpiece W molded and placed in the pressed state by the pressing step forms gaps c2 with respect to both of the upper die 11 and the lower die 12 so as to allow deformation at time of the cooling step except for an accuracy-guaranteed section Wr in the workpiece W.Type: GrantFiled: February 14, 2019Date of Patent: November 22, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Naoyuki Irie, Ichirou Ino, Yoshihide Hirao, Chie Okawa
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Patent number: 11311928Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; refrigerant guide grooves in the press-molding surface to guide a refrigerant ejected from the refrigerant ejection ports to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece; a single connecting groove connected to the refrigerant guide grooves and formed at the outer portion of the press-molding surface into which the refrigerant flows through the refrigerant guide grooves; and discharge ports in the connecting groove. Each of the refrigerant discharge ports is formed at a part of the connecting groove apart from the connecting points between the connecting groove and the refrigerant guide grooves.Type: GrantFiled: January 13, 2020Date of Patent: April 26, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Yuri Takahashi, Takeshi Matsuda, Kenji Nakamura, Chie Okawa, Ichirou Ino, Naoyuki Irie
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Patent number: 11198171Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; and three or more independent refrigerant guide grooves extending in the press-molding surface from the refrigerant ejection ports to guide the refrigerant ejected from the refrigerant ejection port to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece. Each of the refrigerant guide grooves neither branches halfway nor merges with the others of the refrigerant guide grooves to extend from the refrigerant ejection ports to the outer portion of the press-molding surface.Type: GrantFiled: January 13, 2020Date of Patent: December 14, 2021Assignee: MAZDA MOTOR CORPORATIONInventors: Yuri Takahashi, Takeshi Matsuda, Kenji Nakamura, Chie Okawa, Ichirou Ino, Naoyuki Irie
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Publication number: 20210078063Abstract: A hot press processing apparatus 1 includes: a heating step of heating a workpiece W; a pressing step of press-molding, by an upper die 11 and a lower die 12, the workpiece W heated in the heating step after loading the workpiece W between the upper die 11 and the lower die 12; and a cooling step of bringing the coolant into contact with a front surface of the workpiece W that is molded and placed in a pressed state by the pressing step, to thereby cool the workpiece W and place the workpiece W in a quenched state. In the hot press processing apparatus 1, the workpiece W molded and placed in the pressed state by the pressing step forms gaps c2 with respect to both of the upper die 11 and the lower die 12 so as to allow deformation at time of the cooling step except for an accuracy-guaranteed section Wr in the workpiece W.Type: ApplicationFiled: February 14, 2019Publication date: March 18, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Naoyuki IRIE, Ichirou INO, Yoshihide HIRAO, Chie OKAWA
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Publication number: 20210008610Abstract: A hot press processing device 1 includes steps of: a heating step of heating a workpiece W; a press step of press-molding the workpiece W heated in the heating step; a cooling step of cooling a part of the workpiece W press-molded in the press step and causing it to undergo martensite transformation to form a hard zone Zh in the workpiece W, and cooling another part of the workpiece W and causing it to undergo ferrite/bainite transformation to form a soft zone Zs in the workpiece W. In the cooling step, the hot press processing device 1 cools a predetermined portion Zb in the soft zone Zs after increasing rigidity and hardness of the predetermined portion Zb.Type: ApplicationFiled: February 14, 2019Publication date: January 14, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Naoyuki IRIE, Ichirou INO, Yoshihide HIRAO, Chie OKAWA
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Publication number: 20200238363Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; refrigerant guide grooves in the press-molding surface to guide a refrigerant ejected from the refrigerant ejection ports to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece; a single connecting groove connected to the refrigerant guide grooves and formed at the outer portion of the press-molding surface into which the refrigerant flows through the refrigerant guide grooves; and discharge ports in the connecting groove. Each of the refrigerant discharge ports is formed at a part of the connecting groove apart from the connecting points between the connecting groove and the refrigerant guide grooves.Type: ApplicationFiled: January 13, 2020Publication date: July 30, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Yuri TAKAHASHI, Takeshi MATSUDA, Kenji NAKAMURA, Chie OKAWA, Ichirou INO, Naoyuki IRIE
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Publication number: 20200238362Abstract: A lower mold includes: refrigerant ejection ports in its press-molding surface; and three or more independent refrigerant guide grooves extending in the press-molding surface from the refrigerant ejection ports to guide the refrigerant ejected from the refrigerant ejection port to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece. Each of the refrigerant guide grooves neither branches halfway nor merges with the others of the refrigerant guide grooves to extend from the refrigerant ejection ports to the outer portion of the press-molding surface.Type: ApplicationFiled: January 13, 2020Publication date: July 30, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Yuri TAKAHASHI, Takeshi MATSUDA, Kenji NAKAMURA, Chie OKAWA, Ichirou INO, Naoyuki IRIE
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Publication number: 20200206987Abstract: A hot-pressing device includes at least one mold having a molding surface; and at least one mold holder, wherein the hot-pressing device further comprises a refrigerant supply groove provided so as to horizontally extend to at least a mold side or a mold holder side in a contact surface between the at least one mold and the at least one mold holder; and at least one refrigerant supply path opened in corresponding at least one opening disposed on the molding surface, the refrigerant supply path communicating with the refrigerant supply groove and being provided in the inside of the at least one mold so as to extend vertically.Type: ApplicationFiled: November 27, 2019Publication date: July 2, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Takeshi MATSUDA, Masaru TOBO, Yuri TAKAHASHI, Kenji NAKAMURA, Yoshihide HIRAO, Chie OKAWA, Seiji INOUE, Naoyuki IRIE
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Patent number: 9352693Abstract: A trunk panel comprises a bottom portion, a first standing wall portion, and a second standing wall portion. A protrusion portion is provided at a rear end portion of the bottom portion and the second standing wall portion to protrude upward. This protrusion portion is spaced apart from the first standing wall portion such that a passage is formed between the protrusion portion and the first standing wall portion, wherein the passage is configured to allow water to flow down from a portion of the bottom portion which is located forward of the protrusion portion toward a rear end portion of the bottom portion and the second standing wall portion. Thereby, any bad influences of rainwater or the like, which may be brought to various kinds of members around or arranged below a rear lamp, can be properly restrained.Type: GrantFiled: February 19, 2015Date of Patent: May 31, 2016Assignee: MAZDA MOTOR CORPORATIONInventors: Kazuhiro Tanaka, Tsuneki Shimanaka, Chie Okawa
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Publication number: 20150239400Abstract: A trunk panel comprises a bottom portion, a first standing wall portion, and a second standing wall portion. A protrusion portion is provided at a rear end portion of the bottom portion and the second standing wall portion to protrude upward. This protrusion portion is spaced apart from the first standing wall portion such that a passage is formed between the protrusion portion and the first standing wall portion, wherein the passage is configured to allow water to flow down from a portion of the bottom portion which is located forward of the protrusion portion toward a rear end portion of the bottom portion and the second standing wall portion. Thereby, any bad influences of rainwater or the like, which may be brought to various kinds of members around or arranged below a rear lamp, can be properly restrained.Type: ApplicationFiled: February 19, 2015Publication date: August 27, 2015Applicant: MAZDA MOTOR CORPORATIONInventors: Kazuhiro TANAKA, Tsuneki SHIMANAKA, Chie OKAWA