Patents Assigned to Chuo Hatsujo Kabushiki Kaisha
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Patent number: 9638238Abstract: A terminal supporting apparatus is provided with: a hub that is attached to an end of the outer cable and is provided with a flange on an outer periphery; a cushion member that is provided to surround the outer periphery of the hub and abuts on the flange at both a front surface and a back surface of the flange; and a housing that houses the cushion member. The cushion member includes a large-diameter portion that abuts on the flange. At least within a range contacting with the hub, at least a part of an outer peripheral surface of the large-diameter portion is fixed to an inner surface of the housing, while a clearance is formed between the cushion member and the inner surface of the housing over an entire region of an end surface of the large-diameter portion in a cable axis direction.Type: GrantFiled: October 22, 2012Date of Patent: May 2, 2017Assignee: CHUO HATSUJO KABUSHIKI KAISHAInventors: Masahiko Aoki, Kazuyoshi Nono, Takashi Goto, Yuichi Hirata
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Patent number: 9623475Abstract: A method of producing a spring which reduces time required for a heat treatment step of eliminating a machining strain generated by a forming step is provided. This production method is provided with a forming step (S10) of forming a spring steel material into a spring shape and a heat treatment step (S12) of eliminating a machining strain generated in the spring steel material by the forming step. The heat treatment step is executed by electrically heating the spring steel material by applying a current thereto. The heat treatment step has a first step of heating the spring steel material to a predetermined set temperature and a second step of keeping the spring steel material at the set temperature for a predetermined set time period subsequent to the first step. The set temperature is set to be higher than 430° C. but not higher than 500° C.Type: GrantFiled: July 12, 2011Date of Patent: April 18, 2017Assignee: CHUO HATSUJO KABUSHIKI KAISHAInventors: Yuichi Hirata, Hidekazu Suzuki, Hiroyuki Ogiso
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Patent number: 9453548Abstract: The present application provides a method for adjusting spring characteristics of a spring to desired spring characteristics. In the adjusting method of the present application, first, the spring is compressed until a “load-displacement” measurement line obtained by measuring the load applied to the spring and the displacement of the spring meets a “load-displacement” target line determined based on “load-displacement” characteristics of the spring and the desired spring characteristics (S10-S14). Next, the spring is expanded such that the load applied to the spring decreases along the “load-displacement” target line (S18).Type: GrantFiled: March 22, 2016Date of Patent: September 27, 2016Assignee: CHUO HATSUJO KABUSHIKI KAISHAInventors: Shinsuke Okura, Shuji Kamiya, Yukimasa Kabeya, Junya Narukawa, Takashi Goto
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Publication number: 20160208875Abstract: A spring, fatigue strength thereof is improved is provided. A spring 10 includes a steel layer 12 and a compound layer 14 provided on a surface of the steel layer and containing nitride. The compound layer 14 contains an ? phase, and a compressive residual stress of the ? phase is set to range from 800 to 1400 MPa.Type: ApplicationFiled: September 2, 2014Publication date: July 21, 2016Applicant: CHUO HATSUJO KABUSHIKI KAISHAInventor: Hidetoshi Yoshikawa
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Publication number: 20160201749Abstract: The present application provides a method for adjusting spring characteristics of a spring to desired spring characteristics. In the adjusting method of the present application, first, the spring is compressed until a “load-displacement” measurement line obtained by measuring the load applied to the spring and the displacement of the spring meets a “load-displacement” target line determined based on “load-displacement” characteristics of the spring and the desired spring characteristics (S10-S14). Next, the spring is expanded such that the load applied to the spring decreases along the “load-displacement” target line (S18).Type: ApplicationFiled: March 22, 2016Publication date: July 14, 2016Applicant: Chuo Hatsujo Kabushiki KaishaInventors: Shinsuke Okura, Shuji Kamiya, Yukimasa Kabeya, Junya Narukawa, Takashi Goto
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Patent number: 9322447Abstract: The present application provides a method for adjusting spring characteristics of a spring to desired spring characteristics. In the adjusting method of the present application, first, the spring is compressed until a “load-displacement” measurement line obtained by measuring the load applied to the spring and the displacement of the spring meets a “load-displacement” target line determined based on “load-displacement” characteristics of the spring and the desired spring characteristics (S10-S14). Next, the spring is expanded such that the load applied to the spring decreases along the “load-displacement” target line (S18).Type: GrantFiled: January 14, 2011Date of Patent: April 26, 2016Assignee: CHUO HATSUJO KABUSHIKI KAISHAInventors: Shinsuke Okura, Shuji Kamiya, Yukimasa Kabeya, Junya Narukawa, Takashi Goto
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Patent number: 9068615Abstract: A spring has a Rockwell hardness of HRC 53 to HRC 56 and a dislocation density ? (cm?2) that satisfies the formula ??1.4×1011×H?6.7×1012 in the Rockwell hardness range of HRC 53 to HRC 56, in which H is the Rockwell hardness. The spring also has a prior austenite grain size number of 10 or higher.Type: GrantFiled: August 23, 2011Date of Patent: June 30, 2015Assignee: CHUO HATSUJO KABUSHIKI KAISHAInventors: Takanori Kuno, Masami Wakita
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Patent number: 8936236Abstract: A manufacturing method of a coil spring for an automobile suspension includes forming a material into a coil shape; performing a heat treatment step on the material; performing a warm shot peening step on the material, and performing a hot setting step on the material. By performing the warm shot peening step prior to the hot setting step, a stronger compressive residual stress is imparted in a direction along which a large tensile stress acts during actual use of the coil spring, thereby improving sag resistance and durability of the coil spring. A coil spring is also manufactured according to this method.Type: GrantFiled: September 28, 2010Date of Patent: January 20, 2015Assignee: Chuo Hatsujo Kabushiki KaishaInventors: Tomohiro Nakano, Takayuki Sakakibara, Takanori Kuno, Shingo Mimura, Masami Wakita
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Publication number: 20150014464Abstract: A storage device for a cable includes: a holder including a socket connected to a power source side; a reel attached to the holder so as to be attachable thereto and detachable therefrom and including a rotary drum to take up the cable; a socket provided on the reel and fitted with the socket of the holder when the reel is attached to the holder; and an elastically-deformable elastic member that is provided on at least one member of the holder and the reel and presses the socket of the one member to the side of the socket of the other member.Type: ApplicationFiled: February 20, 2013Publication date: January 15, 2015Applicant: Chuo Hatsujo Kabushiki KaishaInventors: Hisashi Dohara, Eiji Mizuno, Kenji Iwami
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Publication number: 20150007683Abstract: A terminal supporting apparatus is provided with: a hub that is attached to an end of the outer cable and is provided with a flange on an outer periphery; a cushion member that is provided to surround the outer periphery of the hub and abuts on the flange at both a front surface and a back surface of the flange; and a housing that houses the cushion member. The cushion member includes a large-diameter portion that abuts on the flange. At least within a range contacting with the hub, at least a part of an outer peripheral surface of the large-diameter portion is fixed to an inner surface of the housing, while a clearance is formed between the cushion member and the inner surface of the housing over an entire region of an end surface of the large-diameter portion in a cable axis direction.Type: ApplicationFiled: October 22, 2012Publication date: January 8, 2015Applicant: CHUO HATSUJO KABUSHIKI KAISHAInventors: Masahiko Aoki, Kazuyoshi Nono, Takashi Goto, Yuichi Hirata
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Publication number: 20140311849Abstract: A cable housing apparatus disclosed in the present specification can house a charging cable serving as standard equipment in a trunk room in an organized state without a troublesome task. This cable housing apparatus houses a charging cable having a charging connector provided in one end, a plug provided in the other end, and a CCID provided between the charging connector and the plug. The cable housing apparatus has a holder, and a reel detachably attached to the holder. The reel has an outer peripheral surface on which the charging cable is capable of being wound, and a holding part capable of holding the CCID.Type: ApplicationFiled: October 26, 2012Publication date: October 23, 2014Applicant: CHUO HATSUJO KABUSHIKI KAISHAInventors: Kenji Iwami, Eiji Mizuno, Yuichi Hirata
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Publication number: 20140274516Abstract: A housing device 10 includes a movable pulley unit 20 and a first weight 18. The movable pulley unit 20 is movable among a first position at which a long object is housed within a housing 12, a second position at which the long object is pulled out from the housing, and a third position which is set between the first position and the second position. Whereas the long object is pulled out from the housing when the movable pulley unit 20 moves upward, the long object is housed in the housing when the movable pulley unit moves downward. The first weight 18 is separated from the movable pulley unit when the movable pulley unit moves between the first position and the third position, and moves together with the movable pulley unit when the movable pulley unit moves between the third position and the second position.Type: ApplicationFiled: August 6, 2012Publication date: September 18, 2014Applicant: CHUO HATSUJO KABUSHIKI KAISHAInventor: Akehito Sugiura
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Publication number: 20140246534Abstract: A housing device 10 includes a movable pulley unit 20 and a movable pulley holding mechanism. The movable pulley unit 20 is provided so as to be movable relative to the housing 12 in an up-down direction, and is movable among a first position at which a long object is housed within the housing, and a second position at which the long object is pulled out from the housing. Whereas the long object is pulled out from the housing when the movable pulley unit 20 moves upward, the long object is housed in the housing when the movable pulley unit moves downward. Between the first position and the second position, the movable pulley holding mechanism switches between a state where the movable pulley is movable downward and a state where the movable pulley is immovable downward.Type: ApplicationFiled: August 6, 2012Publication date: September 4, 2014Applicant: CHUO HATSUJO KABUSHIKI KAISHAInventors: Akehito Sugiura, Masakazu Ichihara
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Publication number: 20140224914Abstract: A housing device 10 includes a movable pulley 20, (first weights 18), and a guide mechanism. The movable pulley is movable among a first position at which the long object is housed within a housing 12, a second position at which the long object is pulled out from the housing, and a third position which is set between the first position and the second position. The long object is pulled out from the housing when the movable pulley 20 moves upward, and the long object is housed in the housing when the movable pulley moves downward. The first weights 18 are separated from the movable pulley when the movable pulley moves between the first position and the third position, and moves together with the movable pulley when the movable pulley moves between the third position and the second position.Type: ApplicationFiled: August 6, 2012Publication date: August 14, 2014Applicant: CHUO HATSUJO KABUSHIKI KAISHAInventors: Akehito Sugiura, Takashi Tomoto
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Patent number: 8789817Abstract: A high-strength spring steel and a spring are provided that have superior corrosion fatigue strength. The spring steel comprises, in mass percent, 0.35-0.55% C, 1.60-3.00% Si, 0.20-1.50% Mn, 0.10-1.50% Cr, and at least one of 0.40-3.00% Ni, 0.05-0.50% Mo and 0.05-0.50% V, the balance being substantially Fe and incidental elements and impurities.Type: GrantFiled: September 28, 2010Date of Patent: July 29, 2014Assignee: Chuo Hatsujo Kabushiki KaishaInventors: Takanori Kuno, Tomohiro Nakano, Takayuki Sakakibara, Masami Wakita, Shingo Mimura
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Patent number: 8777194Abstract: An object of the present invention is to provide a spiral spring assembly that is capable of suppressing lateral force generated in a central shaft. A spiral spring assembly (1) includes a central shaft (2), a spiral spring (3) that is disposed on the periphery of the central shaft (2) and includes an outer end (3a), an inner end (3b), and a spiral portion (3c) that connects the outer end (3a) and the inner end (3b) in a spiral form; an inner end fixing member (4) to which the inner end (3b) is fixed so as to be capable of transmitting torque; and an outer end fixing member (5) to which the outer end (3a) is fixed, and which is capable of moving relative to the inner end fixing member (4) within a predetermined section extending from a first state to a second state. The outer end (3a) is fixed to the outer end fixing member (5) so as to be capable of transmitting torque and suppressing a lateral force that is generated in the central shaft (2) in a predetermined state within the predetermined section.Type: GrantFiled: January 25, 2007Date of Patent: July 15, 2014Assignee: Chuo Hatsujo Kabushiki KaishaInventors: Shinsuke Okura, Toshihiro Suzuki, Itsuo Kojima
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Publication number: 20140175211Abstract: A cord housing apparatus disclosed in the present description has a cord, a drum on which the cord is wound, a biasing member for biasing the drum in a cord reel-in direction, a cord delivery device arranged on a side where the cord is reeled out from the drum, a switch for turning the cord delivery device on and off, and a selection switch for selecting a cord feeding direction of the cord delivery device. The cord delivery device is capable of delivering the cord both in a cord reel-out direction and in the cord reel-in direction.Type: ApplicationFiled: March 23, 2012Publication date: June 26, 2014Applicant: CHUO HATSUJO KABUSHIKI KAISHAInventors: Tomoya Ono, Shigeki Kinomura, Eiji Mizuno
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Publication number: 20140157940Abstract: A cable 20 is provided with a cable body 24a, a metal fitting 22a fixed to at least one end of the cable body, and a covering coat 32a covering at least a portion not covered by a metal fitting on a surface of the cable body. The cable body 24a includes a swelling part 30a on an end at a side on which the metal fitting is fixed, and the swelling part 30a swells in a direction orthogonal to an axis of the cable. The metal fitting 22a surrounds a periphery of the swelling part of the cable body. A tip of the covering coat at the side on which the metal fitting is fixed is located in the metal fitting. The space “a” is formed between the swelling part of the cable body and the tip of the covering coat.Type: ApplicationFiled: July 31, 2012Publication date: June 12, 2014Applicant: CHUO HATSUJO KABUSHIKI KAISHAInventors: Masashi Taura, Kazuki Tsuchiya, Yoshikatsu Tsuge
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Publication number: 20140116189Abstract: A terminal supporting apparatus 10 supports at least one of two ends of a control cable having an inner cable and an outer cable. The terminal supporting apparatus 10 includes: a hub 12 attached to an end of the outer cable, and having a flange on an outer periphery thereof; a cushion member 14 disposed to surround the outer periphery of the hub, and being in contact with the flange at both a front surface and a rear surface of the flange; and a housing 17 having a housing part that houses the cushion member. When an angle formed between an axis of the housing part and an axis of the hub is varied in a range of 0.0° to 6.0°, a diagonal static spring constant of the cushion member in an axial direction thereof may be in a range of 350 to 600 N/mm.Type: ApplicationFiled: June 5, 2012Publication date: May 1, 2014Applicant: CHUO HATSUJO KABUSHIKI KAISHAInventors: Kazuyoshi Nono, Masahiko Aoki, Yoshikatsu Tsuge, Kazumichi Miyashita
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Publication number: 20140001300Abstract: The cord accommodation apparatus of the present application includes a housing and a pulley mechanism. The pulley mechanism includes a plurality of movable pulleys. The movable pulleys are attached to the housing so as to be able to move freely in an up and down direction, and a middle portion of an electrical cord is wound around the movable pulleys. At least one of the plurality of movable pulleys moves upwards with respect to the housing when the electrical cord is pulled out from the accommodation apparatus, while by contrast the electrical cord is accommodated in the accommodation apparatus by this movable pulley, that. has previously moved upwards, moving downwards.Type: ApplicationFiled: March 6, 2012Publication date: January 2, 2014Applicant: Chuo Hatsujo Kabushiki KaishaInventors: Masakazu Ichihara, Shunichi Ueda