Patents by Inventor Yoshinori Shiroishi
Yoshinori Shiroishi 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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Publication number: 20230303151Abstract: In a steering device according to an aspect of the present disclosure, a lock mechanism includes a rod, a drive cam, and a driven cam. The lock mechanism causes paired side plate portions to approach each other in a right-left direction with a drive base and a driven base being separated from each other in the right-left direction as a cam portion slides on a cam follower portion toward a first side in a circumferential direction and causes the paired side plate portions to be separated from each other in the right-left direction with the drive base and the driven base approaching from each other in the right-left direction as the cam portion slides on the cam follower portion toward a second side in the circumferential direction.Type: ApplicationFiled: March 20, 2023Publication date: September 28, 2023Inventor: Yoshinori Shiroishi
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Patent number: 11713068Abstract: A left-side side plate is integrally formed downward from an inner end of a left-side upper plate, and a right-side side plate is integrally formed downward from an inner end of a right-side upper plate. A front end of the left-side side plate and a front end of the right-side side plate are connected by a connection upper plate, and the left-side side plate, the connection upper plate, and the right-side side plate are formed continuously and integrally. A total length of the left-side upper plate and the right-side upper plate is formed shorter than a total length of the left-side side plate and the right-side side plate. The length totaling the left-side upper plate and the right-side upper plate is formed substantially equal to the length of the connection upper plate, and all of these members are press worked of a single metal plate.Type: GrantFiled: June 1, 2022Date of Patent: August 1, 2023Assignee: YAMADA MANUFACTURING CO., LTD.Inventor: Yoshinori Shiroishi
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Patent number: 11643130Abstract: A steering device according to an aspect of the present invention includes an outer shaft, an inner shaft, an outer column, and an inner column. The inner shaft has a sliding portion configured to be capable of being inserted into the outer shaft, and a bearing-mounting portion that is connected to the sliding portion in an axial direction thereof and is configured not to be capable of being inserted into the outer shaft. In the bearing-mounting portion, rear bearings are disposed with an interval therebetween in the axial direction.Type: GrantFiled: June 13, 2018Date of Patent: May 9, 2023Assignee: YAMADA MANUFACTURING CO., LTD.Inventor: Yoshinori Shiroishi
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Patent number: 11613299Abstract: A steering device includes an inner column, an outer column, a hanger bracket, and a fixing member. The hanger bracket has a guide hole which extends in the front-rear direction and through which the shaft portion of the fixing member passes. An edge portion of the guide hole is provided with a first region with which the seat portion of the fixing member comes into contact to fix the hanger bracket to the inner column and a second region which is disposed in front of the first region and faces the seat portion when the seat portion is displaced forward together with the inner column by a secondary collision load being input. A frictional restraining force between the seat portion and the edge portion of the guide hole in a state where the seat portion is displaced to a position opposite the second region is set to be smaller than a frictional restraining force between the seat portion and the edge portion of the guide hole at a position where the seat portion faces the first region.Type: GrantFiled: June 6, 2022Date of Patent: March 28, 2023Assignee: YAMADA MANUFACTURING CO., LTD.Inventor: Yoshinori Shiroishi
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Patent number: 11584425Abstract: A steering device includes an inner column, an outer column, a hanger bracket, and a fixing member. The hanger bracket has a guide hole which extends in the front-rear direction and through which the shaft portion of the fixing member passes. An edge portion of the guide hole of the hanger bracket is provided with a fixing portion and a gradually increasing resistance portion. The seat portion of the fixing member comes into contact with the fixing portion to fix the hanger bracket to the inner column. The gradually increasing resistance portion is disposed in front of the fixing portion and gradually increases frictional resistance between the fixing member and the hanger bracket according to forward displacement of the fixing member when the fixing member is displaced forward together with inner column by a secondary collision load being input to the steering shaft.Type: GrantFiled: June 2, 2022Date of Patent: February 21, 2023Assignee: YAMADA MANUFACTURING CO., LTD.Inventor: Yoshinori Shiroishi
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Publication number: 20220396302Abstract: A steering device includes an inner column, an outer column, a hanger bracket, and a fixing member. The hanger bracket has a guide hole which extends in the front-rear direction and through which the shaft portion of the fixing member passes. An edge portion of the guide hole is provided with a first region with which the seat portion of the fixing member comes into contact to fix the hanger bracket to the inner column and a second region which is disposed in front of the first region and faces the seat portion when the seat portion is displaced forward together with the inner column by a secondary collision load being input. A frictional restraining force between the seat portion and the edge portion of the guide hole in a state where the seat portion is displaced to a position opposite the second region is set to be smaller than a frictional restraining force between the seat portion and the edge portion of the guide hole at a position where the seat portion faces the first region.Type: ApplicationFiled: June 6, 2022Publication date: December 15, 2022Inventor: Yoshinori Shiroishi
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Publication number: 20220396300Abstract: A left-side side plate is integrally formed downward from an inner end of a left-side upper plate, and a right-side side plate is integrally formed downward from an inner end of a right-side upper plate. A front end of the left-side side plate and a front end of the right-side side plate are connected by a connection upper plate, and the left-side side plate, the connection upper plate, and the right-side side plate are formed continuously and integrally. A total length of the left-side upper plate and the right-side upper plate is formed shorter than a total length of the left-side side plate and the right-side side plate. The length totaling the left-side upper plate and the right-side upper plate is formed substantially equal to the length of the connection upper plate, and all of these members are press worked of a single metal plate.Type: ApplicationFiled: June 1, 2022Publication date: December 15, 2022Inventor: Yoshinori SHIROISHI
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Publication number: 20220396301Abstract: A steering device includes an inner column, an outer column, a hanger bracket, and a fixing member. The hanger bracket has a guide hole which extends in the front-rear direction and through which the shaft portion of the fixing member passes. An edge portion of the guide hole of the hanger bracket is provided with a fixing portion and a gradually increasing resistance portion. The seat portion of the fixing member comes into contact with the fixing portion to fix the hanger bracket to the inner column. The gradually increasing resistance portion is disposed in front of the fixing portion and gradually increases frictional resistance between the fixing member and the hanger bracket according to forward displacement of the fixing member when the fixing member is displaced forward together with inner column by a secondary collision load being input to the steering shaft.Type: ApplicationFiled: June 2, 2022Publication date: December 15, 2022Inventor: Yoshinori Shiroishi
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Patent number: 11505236Abstract: A steering device according to an aspect of the present disclosure includes: a column unit configured to rotatably support a steering shaft; a front bracket configured to rotatably support the column unit; a lock bolt configured to protrude in a right-left direction from the column unit; a rear bracket that includes a tilt guide hole and is attached to a vehicle body behind the front bracket, the tilt guide hole guiding the lock bolt to move upward and downward as the column unit rotates around an axis; and a connection piece bridged between the front bracket and the rear bracket in a state of being fixed to each of the front bracket and the rear bracket.Type: GrantFiled: December 16, 2021Date of Patent: November 22, 2022Assignee: YAMADA MANUFACTURING CO., LTD.Inventor: Yoshinori Shiroishi
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Publication number: 20220306182Abstract: A steering device according to an aspect of the present disclosure includes: a column unit configured to rotatably support a steering shaft; a front bracket configured to rotatably support the column unit; a lock bolt configured to protrude in a right-left direction from the column unit; a rear bracket that includes a tilt guide hole and is attached to a vehicle body behind the front bracket, the tilt guide hole guiding the lock bolt to move upward and downward as the column unit rotates around an axis; and a connection piece bridged between the front bracket and the rear bracket in a state of being fixed to each of the front bracket and the rear bracket.Type: ApplicationFiled: December 16, 2021Publication date: September 29, 2022Inventor: Yoshinori Shiroishi
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Publication number: 20220001913Abstract: A steering device according to an aspect of the present invention includes an outer shaft, an inner shaft, an outer column, and an inner column. The inner shaft has a sliding portion configured to be capable of being inserted into the outer shaft, and a bearing-mounting portion that is connected to the sliding portion in an axial direction thereof and is configured not to be capable of being inserted into the outer shaft. In the bearing-mounting portion, rear bearings are disposed with an interval therebetween in the axial direction.Type: ApplicationFiled: September 17, 2021Publication date: January 6, 2022Inventor: Yoshinori Shiroishi
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Patent number: 11084519Abstract: A steering device includes a column unit, a front bracket, a rear bracket, and a lock mechanism. A tilt guide part through which a lock bolt is inserted and which guides vertical movement of the lock bolt in accordance with rotation of the column unit is formed on the rear bracket. The tilt guide part includes an intermediate guide part, and an upper guide part continuous with an upper side of the intermediate guide part and having a smaller width than that of the intermediate guide part. The upper guide part is configured so that the lock bolt is slidable in accordance with the rotation of the column unit and is configured to be elastically deformable.Type: GrantFiled: July 24, 2019Date of Patent: August 10, 2021Assignee: YAMADA MANUFACTURING CO., LTD.Inventor: Yoshinori Shiroishi
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Patent number: 10919559Abstract: A steering device includes a column unit, a front bracket, a lock bolt, a rear bracket provided with a tilting guide hole, and a second urging member. The column unit is provided with a bumping portion that restricts the column unit from rising by coming into contact with the rear bracket before the lock bolt abuts onto an upper end inner circumferential edge of the tilting guide hole in accordance with rotation of the column unit.Type: GrantFiled: November 9, 2018Date of Patent: February 16, 2021Assignee: YAMADA MANUFACTURING CO., LTD.Inventor: Yoshinori Shiroishi
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Patent number: 10737714Abstract: A steering device is configured such that an EA stopper and a telescopic lock tooth are engaged with each other such that an inner column and a fixation member move forward with respect to a hanger bracket in a case where a load in a forward direction that acts on the inner column is equal to or greater than a predetermined value. Regarding a telescopic stopper, the fixation member comes into contact with the telescopic stopper in accordance with movement of the inner column and the fixation member with respect to the hanger bracket such that the telescopic stopper rotates in a withdrawal direction in which the telescopic stopper is withdrawn from the fixation member.Type: GrantFiled: November 9, 2018Date of Patent: August 11, 2020Assignee: YAMADA MANUFACTURING CO., LTD.Inventor: Yoshinori Shiroishi
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Patent number: 10696319Abstract: A steering device includes an outer column, an inner column, and a hanger bracket. The inner column is configured such that the inner column and a fixation member move forward with respect to the hanger bracket in a case where a load in a forward direction that acts on the inner column is equal to or greater than a predetermined value in the locked state. A sliding friction portion that slides on at least one of the inner column and the hanger bracket in accordance with movement of the inner column with respect to the hanger bracket is provided between the inner column and the hanger bracket.Type: GrantFiled: November 9, 2018Date of Patent: June 30, 2020Assignee: YAMADA MANUFACTURING CO., LTD.Inventor: Yoshinori Shiroishi
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Publication number: 20200164910Abstract: A steering device according to an aspect of the present invention includes an outer shaft, an inner shaft, an outer column, and an inner column. The inner shaft has a sliding portion configured to be capable of being inserted into the outer shaft, and a bearing-mounting portion that is connected to the sliding portion in an axial direction thereof and is configured not to be capable of being inserted into the outer shaft. In the bearing-mounting portion, rear bearings are disposed with an interval therebetween in the axial direction.Type: ApplicationFiled: June 13, 2018Publication date: May 28, 2020Inventor: Yoshinori SHIROISHI
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Patent number: 10654514Abstract: A steering device includes a plurality of telescopic lock teeth, a lock bolt, an EA stopper, and a first urging member. An outer circumferential surface of the lock bolt is formed with a bolt engagement portion. An inner circumferential surface of an EA insertion hole is formed with an EA protruding portion that is engaged with a bolt engagement portion in a direction in which the EA stopper is moved toward an abutting position in a bolt circumferential direction.Type: GrantFiled: November 9, 2018Date of Patent: May 19, 2020Assignee: YAMADA MANUFACTURING CO., LTD.Inventor: Yoshinori Shiroishi
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Publication number: 20200070869Abstract: A steering device includes a column unit, a front bracket, a rear bracket, and a lock mechanism. A tilt guide part through which a lock bolt is inserted and which guides vertical movement of the lock bolt in accordance with rotation of the column unit is formed on the rear bracket. The tilt guide part includes an intermediate guide part, and an upper guide part continuous with an upper side of the intermediate guide part and having a smaller width than that of the intermediate guide part. The upper guide part is configured so that the lock bolt is slidable in accordance with the rotation of the column unit and is configured to be elastically deformable.Type: ApplicationFiled: July 24, 2019Publication date: March 5, 2020Inventor: Yoshinori Shiroishi
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Publication number: 20190152506Abstract: A steering device includes a column unit, a front bracket, a lock bolt, a rear bracket provided with a tilting guide hole, and a second urging member. The column unit is provided with a bumping portion that restricts the column unit from rising by coming into contact with the rear bracket before the lock bolt abuts onto an upper end inner circumferential edge of the tilting guide hole in accordance with rotation of the column unit.Type: ApplicationFiled: November 9, 2018Publication date: May 23, 2019Inventor: Yoshinori Shiroishi
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Publication number: 20190152511Abstract: A steering device includes an outer column, an inner column, and a hanger bracket. The inner column is configured such that the inner column and a fixation member move forward with respect to the hanger bracket in a case where a load in a forward direction that acts on the inner column is equal to or greater than a predetermined value in the locked state. A sliding friction portion that slides on at least one of the inner column and the hanger bracket in accordance with movement of the inner column with respect to the hanger bracket is provided between the inner column and the hanger bracket.Type: ApplicationFiled: November 9, 2018Publication date: May 23, 2019Inventor: Yoshinori Shiroishi