Patents by Inventor Tsutomu Tozuka
Tsutomu Tozuka 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).
-
Patent number: 8763746Abstract: A mounting structure of a handle switch device with which a panel can be replaced by manipulating fasteners for fastening two outer casings of the handle switch device together. A rear casing is temporarily mounted to an inner casing that is mounted to a handle pipe, engagement pieces of a design panel are inserted through through holes of a front casing, and the front and rear casings are fastened together by mounting screws, thereby completing assemblage of the handle switch device. To replace the design panel, the mounting screws are loosened to bring them into a half-engagement state and the front casing is displaced toward a driver side to disengage projection ribs of the inner casing from the through holes. Next, the design panel is dismounted from the front casing, a new design panel is mounted to the front casing, and the mounting screws are tightened.Type: GrantFiled: November 30, 2012Date of Patent: July 1, 2014Assignee: Toyo Denso Kabushiki KaishaInventors: Tsutomu Tozuka, Shigeharu Nazu, Keisuke Hojo
-
Patent number: 7663477Abstract: In a turn signal control device for a vehicle having an automatic canceling function, a switch operating element is carried on a pivot shaft mounted in a fixed switch case so that the switch operating element can be returned and pushed-in between a returned position and a pushed-in position. The switch operating element is swingable at the returned position between a neutral position and a left-turn indicating position and a right-turn indicating position. The switch operating element is pushed-in to the pushed-in position by push-in operation at the returned position. The switch operating element is resiliently urged toward the neutral position and there turned position. A winker switch is operatively connected to the switch operating element so as to break the connection of a left-turn indicating means or a right-turn indicating means to a flasher unit in response to push-in of the switch operating element to the pushed-in position.Type: GrantFiled: December 6, 2007Date of Patent: February 16, 2010Assignees: Toyo Denso Co., Ltd., Honda Motor Co., Ltd.Inventors: Kazuma Shimizu, Takashi Nakamura, Tsutomu Tozuka, Yoshiaki Takeuchi
-
Patent number: 7402767Abstract: In a handle switch device of a vehicle, a switch casing which surrounds a bar handle and accommodates a switch in the inside thereof is mounted on the bar handle, and a manipulation knob which manipulate the switch is mounted on a rear wall of the switch casing. The manipulation knob is arranged substantially at the same height as the bar handle and is tiltably supported on the switch casing by way of a pivot shaft, the switch is formed of a slide-type switch in which a movable contact holder slides, the switch is arranged in the inside of the switch casing above or below the bar handle, and the manipulation knob and the movable contact holder are connected with each other by way of moving direction conversion means which converts a tilting of the manipulation knob to a linear movement and transmits the linear movement to the movable contact holder. Thus, it is possible to provide a handle switch device of a vehicle which exhibits favorable manipulability of a manipulation knob and has a compact shape.Type: GrantFiled: April 2, 2007Date of Patent: July 22, 2008Assignees: Toyo Denso Co., Ltd., Honda Motor Co., Ltd.Inventors: Tsutomu Tozuka, Takashi Nakamura, Hirokazu Nakata, Koichi Hikichi, Shigeru Kodaira, Masaru Nakayama
-
Publication number: 20080164991Abstract: In a turn signal control device for a vehicle having an automatic canceling function, a switch operating element is carried on a pivot shaft mounted in a fixed switch case so that the switch operating element can be returned and pushed-in between a returned position and a pushed-in position. The switch operating element is swingable at the returned position between a neutral position and a left-turn indicating position and a right-turn indicating position. The switch operating element is pushed-in to the pushed-in position by push-in operation at the returned position. The switch operating element is resiliently urged toward the neutral position and there turned position. A winker switch is operatively connected to the switch operating element so as to break the connection of a left-turn indicating means or a right-turn indicating means to a flasher unit in response to push-in of the switch operating element to the pushed-in position.Type: ApplicationFiled: December 6, 2007Publication date: July 10, 2008Inventors: Kazuma Shimizu, Takashi Nakamura, Tsutomu Tozuka, Yoshiaki Takeuchi
-
Patent number: 7332684Abstract: A turn signal switch for a vehicle includes: a resiliently urging means provided between a switch operating element and a switch case so as to urge the switch operating element toward a neutral position and a returned position. The resiliently urging means includes: a return plate having a guide recess which is provided at one end and against which abuts a first pin provided on the switch operating element, the return plate being slidably supported on the switch case; a pair of return springs exhibiting spring forces for urging the return plate in a direction to bring the pin into abutment against the guide recess. The guide recess is curved into a substantially triangular shape, and includes a valley and return cam faces on opposite sides of the valley. The return springs are provided on opposite sides of the valley and between the return plate and the switch case. Thus, it is possible to reduce the length of the turn signal switch in the direction of push-in/return of the switch operating element.Type: GrantFiled: January 31, 2007Date of Patent: February 19, 2008Assignee: Toyo Denso Co., Ltd.Inventors: Tsutomu Tozuka, Takashi Nakamura
-
Publication number: 20070278072Abstract: A turn signal switch for a vehicle includes: a resiliently urging means provided between a switch operating element and a switch case so as to urge the switch operating element toward a neutral position and a returned position. The resiliently urging means includes: a return plate having a guide recess which is provided at one end and against which abuts a first pin provided on the switch operating element, the return plate being slidably supported on the switch case; a pair of return springs exhibiting spring forces for urging the return plate in a direction to bring the pin into abutment against the guide recess. The guide recess is curved into a substantially triangular shape, and includes a valley and return cam faces on opposite sides of the valley. The return springs are provided on opposite sides of the valley and between the return plate and the switch case. Thus, it is possible to reduce the length of the turn signal switch in the direction of push-in/return of the switch operating element.Type: ApplicationFiled: January 31, 2007Publication date: December 6, 2007Inventors: Tsutomu Tozuka, Takashi Nakamura
-
Publication number: 20070235315Abstract: In a handle switch device of a vehicle, a switch casing which surrounds a bar handle and accommodates a switch in the inside thereof is mounted on the bar handle, and a manipulation knob which manipulate the switch is mounted on a rear wall of the switch casing. The manipulation knob is arranged substantially at the same height as the bar handle and is tiltably supported on the switch casing by way of a pivot shaft, the switch is formed of a slide-type switch in which a movable contact holder slides, the switch is arranged in the inside of the switch casing above or below the bar handle, and the manipulation knob and the movable contact holder are connected with each other by way of moving direction conversion means which converts a tilting of the manipulation knob to a linear movement and transmits the linear movement to the movable contact holder. Thus, it is possible to provide a handle switch device of a vehicle which exhibits favorable manipulability of a manipulation knob and has a compact shape.Type: ApplicationFiled: April 2, 2007Publication date: October 11, 2007Inventors: Tsutomu Tozuka, Takashi Nakamura, Hirokazu Nakata, Koichi Hikichi, Shigeru Kodaira, Masaru Nakayama