Denso Corporation

Other

Sawafuji Electric Co., Ltd.

Nippondenso Co., Ltd.

Dupont Toray Specialty Materials Kabushiki Kaisha

Denso Corpora Tion

Youichi Hasegawa

Sadayoshi Kajino

Tomoya Imanishi

Syuichi Aoki

Yasuo Osawa

Kazuaki Murase

Shinji Usami

Koji Sakakibara

Hisato Inoue

Yoshinori Fukushima

Makoto Mori

Kei Shibayama

Yuji Masamura

Hiroyasu Omiyama

Yasuhiro Nagao

Yoshinori Yamaguchi

Yukio Nawa

Takeshi Shimoyama

Kazuo Hirama

Shuichi Aoki

Syuuji Miyazawa

Kazunari Onaya

Takahiro Ohgi

Kazuhiro Ando

Hironori Yoneshima

Morikazu Sakayanagi

A silicone grease composition is disclosed. The grease composition contains a silicone oil and zinc dialkyldithiocarbamate as an extreme-pressure additive. The grease composition contains substantially no zinc dialkyldithiophosphate. The grease composition achieves high friction characteristics and wear characteristics. A method for transmitting torque of a clutch or a torque limiter mechanism is also disclosed. Moreover, a method for producing a clutch or a torque limiter mechanism is disclosed. The methods utilize the aforementioned grease composition.

Grease composition, machine component, and starter overrunning clutch

A silicone grease composition having high friction characteristics and wear characteristics is disclosed. The silicone grease composition is provided by adding a zinc salt (B) containing, at a mass ratio from 1:99 to 99:1, a zinc dialkyldithiophosphate (B1) and a zinc dialkyldithiocarbamate (B2) as an extreme-pressure additive to a silicone oil (A). A method for transmitting torque of a clutch or a torque limiter mechanism is also disclosed.

A starter for an engine is equipped with a planetary gear speed reducer, a restraining mechanism, and a shock absorber which is made up of a rotary disc, a stationary disc, a case, and a load applying mechanism. The load applying mechanism applies a load to the stationary and rotary discs to develop a given degree of friction therebetween. When an excessive torque acts on the rotary disc through the internal gear, the shock absorber induces the rotary disc to rotate against the given degree of friction to absorb the torque to eliminate a physical impact to be exerted on the planetary gear speed reducer. The restraining mechanism restrains the load applying mechanism from moving in a radius direction of the internal thread to avoid undesirable engagement of the load applying mechanism with the internal thread, thereby ensuring the stability in applying the load to the stationary and rotary discs.

Starter equipped with planetary speed reducer and shock absorber

The starter includes an electromagnetic switch includes a first solenoid for pushing out the pinion shaft to an engine side and a second solenoid for opening and closing a main contact through which a current is supplied to a motor. The first and second solenoids are disposed coaxially with the pinion shaft. The first and second plungers included in the first and second solenoids, respectively are disposed overlapping with each other in the axial direction of the starter such that a rear portion of the first plunger enters inside the second plunger when they are deenergized.

Starter for vehicle

A method of manufacturing a field coil member having first and second edgewise coils to be respectively fitted on first and second pole cores mounted on a circumferential surface of a yoke. Each of the first and second pole cores has an outer periphery, the outer periphery having at least one rounded corner. The method includes providing a rectangular wire strap having a pair of opposing major sides and a thickness therebetween substantially less than a width of the major sides and providing first and second coil forms, the first coil form having an outer periphery identical in shape to the outer periphery of the first pole core, the second coil form having an outer periphery identical in shape to the outer periphery of the second pole core.

Method of manufacturing a field coil member having first and second edgewise coils

A starter includes a motor, a pinion, a pinion carrier carrying the pinion, a ring member provided on the pinion carrier, a shifting member, and a lubricant blocking member. The ring member is rotatable relative to the pinion carrier and restricted in axial movement toward the pinion. The shifting member has a ring portion that is arranged on the pinion carrier with the ring member interposed between the ring portion and the pinion. The ring portion has an axial end face that has a recess for receiving lubricant and is covered by the ring member. The shifting member is configured to shift, by pushing the ring member with the ring portion, the pinion in the axial direction, thereby bringing the pinion into mesh with a ring gear of an engine. The lubricant blocking member blocks the lubricant from being scattered due to rotation of the pinion carrier with the pinion.

Engine starter having shift lever with lubricant-blocking wall

In a rotary electric machine, a field coil member includes a first edgewise coil composed of a plurality of coaxially layered convolutions. The coaxially layered convolutions are wound around the outer periphery of the first pole core. The field coil member includes a second edgewise coil composed of a plurality of coaxially layered convolutions. The coaxially layered convolutions are wound around the outer periphery of the second pole core. The field coil member includes a link portion connecting between the first edgewise coil and the second edgewise coil in series. One of the first and second edgewise coils has one coil end extending therefrom to cross over the link portion at a crossover portion thereof. The crossover portion between the one coil end and the link portion is arranged to be non-overlapped with the convolutions of the one of the first and second edgewise coils.

Rotary electric machine with coil member and method of manufacturing coil member

The rotational electric machine includes a cylindrical yoke and a field winding connected to an inner surface of the cylindrical yoke. The field winding is composed of plural formed coils, each coupled to a bobbin. The bobbin includes a first flange for insulating the formed coil from the inner surface of the cylindrical yoke, a second flange for insulating the formed coil from a supporting brim of a pole core and a pipe portion for insulating the formed coil from a boss portion of the pole core. The first flange is made all around the pipe portion while the second flange is formed to extend only in the lateral direction of the pipe portion. The bobbin is easily coupled to the formed coil by flexibly bending the bobbin. Alternatively, the bobbin or bobbins may be made by folding a bobbin sheet after placing the formed coils on the bobbin sheet.

Rotational electric machine having field winding formed by coupling formed coil to bobbin

A starter and a method of manufacturing the starter are disclosed wherein the starter comprises a case, a housing disposed in front of the case, a pinion moving body slidably received by the case and the housing, and a lever unit having a lever, swingably supported on a lever support member, for actuating the pinion moving body to an operative position to allow a pinion to be brought into meshing engagement with a ring gear of an engine to start up the same. The lever support member is mounted on the case via a positioning mechanism composed of positioning components, formed on the lever support member, and the positioning components, formed on the case, with which the positioning components engage, respectively.

Starter

According to the invention, a starter includes a motor and an electromagnetic switch. The electromagnetic switch includes a switch case, a movable contact, a fixed contact, a contact cover, an excitation coil, an excitation coil terminal, a motor terminal, and a protective cover. The excitation coil terminal has a first end, which is located inside the contact cover and electrically connected to the excitation coil, and a second end that protrudes outside the contact cover so as to be electrically connected to a power source. The motor terminal has a first end, which is located inside the contact cover and electrically connected to the fixed contact, and a second end that protrudes outside the contact cover and is electrically connected to the motor. The protective cover covers both the second end of the excitation coil terminal and the second end of the motor terminal, thereby protecting both the second ends.

Starter including electromagnetic switch with protective cover for protecting terminals

A rotational torque of an electric motor of a starter is transmitted to an output shaft having a pinion gear engaging with a ring gear of an internal combustion engine via a one-way clutch. A tube forming a clutch-inner and the output shaft are spline-coupled to allow the output shaft to reciprocally move in the axial direction while transmitting the rotational torque of the tube to the output shaft. The output shaft is slidably supported by a supporting portion formed at a front end of the tube. To establish air communication between an inside space of the tube and an outside space, an air passage is formed either in the supporting portion or on the output shaft. Pressure changes in the inner space due to reciprocal movement of the output shaft are suppressed by air communication through the air passage, and lubricant in the tube is well retained therein.

Starter for cranking internal combustion engine

The starter for an engine of a vehicle includes a motor generating torque for starting the engine, an output shaft configured to move in an axial direction thereof by being pressed at a pressure-receiving portion thereof, and applied with the torque to rotate, and a lever switch configured to press the pressure-receiving portion of the output shaft at a pressure-applying portion thereof in accordance with an external command so that a pinion rotatably fixed to the output shaft engages with a gear of the engine to thereby start the engine. A protection member rotatable with respect to the pressure-receiving portion is provided between the pressure-receiving portion and the pressure-applying portion. The pressure-applying portion facing the pressure-receiving portion across from the protection member is formed with a groove to be filled by lubricant.

Starter for vehicle engine

An electromagnetic switch has a solenoid and an electric contact section set to a closed state in response to an attraction force of the solenoid. The contact section is covered with a contact cover fixed to the solenoid, and a terminal electrically connected with the solenoid is placed within the cover. An end of the terminal is protruded from the cover and is electrically connected with a conducting member. The member has a portion joined to the terminal and other portions separated or detachable from the terminal. In the maintenance of the switch, the portion of the member joined to the terminal is removed from the switch. After the maintenance, one of the other portions of the member is joined to the end of the terminal.

Electromagnetic switch of starter

A magnet switch which may be employed in automotive engine starters is provided. The magnet switch includes a metallic terminal which extends through a hole formed in a switch cover to have one of ends thereof protruding outside the cover. The other end of the terminal is connected to an exciting coil to energize it to establish an electric connection between contacts. The magnet switch also includes a cylindrical seal and a stopper. The seal is fit on the end of the terminal to hermetically seal a clearance between the hole and the terminal. The stopper provided on the terminal works to stop the seal from moving to the other end of the terminal, thereby ensuring the stability of installation and sealing performance of the seal in the magnet switch.

Growing community of inventors

Kasugai, Japan

Youichi Hasegawa