| ANDEN CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 20120075044 | ELECTROMAGNETIC RELAY - An electromagnetic relay includes a coil, a movable member, first and second fixed contact supports each having first and second fixed contacts, and a movable body having first and second movable contacts. A third fixed contact is arranged on the second fixed contact support at a position away from a line passing through the first and second fixed contacts, and a third movable contact is arranged on the movable body. When the movable member is driven by electromagnetic force of the coil, the movable contacts contact the fixed contacts at a contact portion between the first fixed contact and the first movable contact, a contact portion between the second fixed contact and the second movable contact, and a contact portion between the third fixed contact and the third movable contact. | 03-29-2012 |
| 20110241809 | ELECTROMAGNETIC RELAY - In an electromagnetic relay, length from a movable contact to an end portion of a movable element on a first end side is set greater than length from the movable contact to another end portion of the movable element on a second end side opposite to the first end side. A direction of a Lorentz force acting on a portion of the movable element from the movable contact to the end portion of the movable element on the first end side is conformed to a direction for bringing fixed contacts and movable contacts into contact with each other. Thus, separation between the movable contacts and the fixed contacts due to an electromagnetic repulsive force can be inhibited. | 10-06-2011 |
| 20110216448 | OVERCURRENT PROTECTION CIRCUIT - An overcurrent protection circuit includes a load driver for driving a load, a controller for turning ON and OFF the load driver, a current sensor for measuring a load current flowing through the load, and an add/subtract circuit for performing both an addition operation and a subtraction operation on a previous calculation result or for performing only the subtraction operation on the previous calculation result so as to produce a present calculation result. The addition operation uses an added value depending on the presently measured current. The subtraction operation uses a subtracted value depending on the presently measured current. The controller turns OFF the load driver, when the present calculation result of the add/subtract circuit exceeds a predetermined determination value. | 09-08-2011 |
| 20110141701 | ELECTRONIC CIRCUIT DEVICE - An electronic circuit device includes a bus bar, a base component and an electronic component. The bus bar has an external connector terminal capable of receiving electric power from an external power source. The base component has a metallic heat radiation portion and is disposed to oppose the bus bar. The electronic component is held between the bus bar and heat the radiation portion of the base component. The bus bar further includes fixing terminals extending toward the base component. The fixing terminals are fixed to the base component to constitute fixing portions. The fixing portions are configured to have elasticity and exert a restoring force such that a distance between the bus bar and the base component reduces. The electronic component is in pressure contact with the bus bar and the base component by the restoration force of the elasticity of the fixing portions. | 06-16-2011 |
| 20110115287 | VEHICULAR POWER SUPPLY CIRCUIT - A vehicular power supply circuit for supplying power to loads from a battery to drive the loads includes a power line and noise protection circuits. The power line is connected to the loads and systematically separated into multiple power lines based on characteristics of the loads to be connected. Each noise protection circuit is provided to a corresponding power line on the upstream side of the loads connected to the corresponding power line to serve as a common noise protection circuit for the loads connected to the corresponding power line. | 05-19-2011 |
| 20110110009 | SWITCH CIRCUIT HAVING OVERCURRENT DETECTION FUNCTION - A first overcurrent detecting circuit outputs a first time-up signal when a time period, in which an electric current flowing into the wire harness is greater than the first threshold, reaches a first duration time, which corresponds to a first threshold. A second overcurrent detecting circuit outputs a second time-up signal when a time period, in which an electric current flowing into the wire harness is greater than the second threshold, reaches a second duration time, which corresponds to a second threshold. The second threshold is less than the first threshold. The second duration time is longer than the first duration time. A determination circuit determines that an overcurrent flows into the wire harness and cause a control circuit to deactivate the switching element when inputting at least one of the first and second time-up signals. | 05-12-2011 |
| 20110101886 | LOAD CONTROL CIRCUIT - A switch device controls a voltage applied to a load element according to an electric power supply from a power source. A driver circuit controls activation and deactivation of the switch device. A circuit portion sets a duty ratio and output the duty ratio to the driver circuit for causing the driver circuit to activate the switch device according to the duty ratio to control a voltage applied to the load element. The circuit portion sets the duty ratio according to a duty ratio characteristic curve. In the duty ratio characteristic curve, the duty ratio decreases gradually with increase in a voltage of the power source, and decrease in the duty ratio with increase in the voltage of the power source becomes small gradually. | 05-05-2011 |
| 20100289604 | ELECTROMAGNETIC RELAY - An electromagnetic relay switches to conduct and interrupt currents having different magnitudes and flowing though mutually opposite paths via the electromagnetic relay. The relay includes a coil generating a magnetic force and a pair of contact sections opened and closed selectively by the magnetic force. The contact sections comprise a pair of fixed contacts and a pair of movable contacts. Each fixed contacts is held by a pair of conductive fixed holders and is near a tip section of each fixed holder. The movable contacts are fixed to a conductive movable holder and moves toward and away from the fixed holders selectively in response to the magnetic force. The relay further includes two arc-extinguishing magnet members adjacent to the contact sections such that, the arc generated by interrupting one current having a magnitude larger than the other current is extended toward the tip section at each contact section. | 11-18-2010 |
| 20100236825 | Assemble structure of connection device and electric device, connection device and electric device used for the same - An assemble structure includes: a connection device including a support element on one side of an attachment surface, a first connector on the attachment surface, and a key groove on a support surface of the support element; and the electric device including a casing to be attached to the attachment surface, a second connector on one surface of the casing electrically coupled with the first connector, and a key protruding from the one side of the casing. The electric device is rotatable via a hinge provided by the support element and the casing when one side of the casing faces a support surface of the support element. The key groove on the support surface corresponds to the key on the one side of the casing. | 09-23-2010 |
| 20100207713 | Electromagnetic relay - An electromagnetic relay includes a coil, a movable member, first and second fixed contact supports each having first and second fixed contacts, and a movable body having first and second movable contacts. A third fixed contact is arranged on the second fixed contact support at a position away from a line passing through the first and second fixed contacts, and a third movable contact is arranged on the movable body. When the movable member is driven by electromagnetic force of the coil, the movable contacts contact the fixed contacts at a contact portion between the first fixed contact and the first movable contact, a contact portion between the second fixed contact and the second movable contact, and a contact portion between the third fixed contact and the third movable contact. | 08-19-2010 |
| 20100193475 | Electromagnetic relay - An electromagnetic relay includes a resin case, a coil, a movable contact; a fixed contact, a flat recess, a ventilation hole, a cooling member and a flat passage. The resin case has a housing space therein. The movable contact is within the housing space and is actuated by the coil. The fixed contact is within the housing space. The flat recess is formed at the case to communicate with the housing space. The ventilation hole is formed at the case to provide communication between the recess and an exterior of the case. The cooling member is within the recess to cool flame that passes through the recess. The flat passage is formed between the cooling member and an internal wall surface of the recess and has a clearance dimension such that flame is extinguished. | 08-05-2010 |
| 20100066471 | Electromagnetic relay - An electromagnetic relay includes a housing having an accommodating space therein, a magnet coil in the accommodating space to generate electromagnetic force when energized, a moving contact disposed in the accommodating space and driven by the coil, a fixed contact in the accommodating space, the moving contact engaged with or disengaged from the fixed contact as a result of whether the moving contact is driven or not, a breathing hole formed in the housing to communicate between the accommodating space and an exterior space of the housing, and a flame propagation route along which a flame of flammable gas ignited by arc generated between the moving contact and the fixed contact propagates toward the breathing hole. The route includes a flame extinguishment clearance that is set to have such a gap size that the flame is extinguished when passing through the clearance. | 03-18-2010 |
| 20100060394 | Electromagnetic relay - An electromagnetic relay includes a case, a base, a magnet coil, a movable member driven by electromagnetic force of the coil, a moving contact, a fixed contact engaged with or disengaged from the moving contact, a fixed contact holding member fixed to the base with the holding member passing therethrough and having a load circuit terminal, and a magnet applying Lorentz force to arc generated between the fixed contact and the moving contact. The case includes a guide part on its region with which arc extended in a Lorentz force application direction collides. The guide part guides arc after the collision to extend arc in a different direction from the application direction. The case includes a case partition wall between the guide part and the base. The holding member has a guide part opposing portion opposed to the guide part. The opposing portion is covered with the case partition wall. | 03-11-2010 |
| 20100046133 | RELAY DEVICE - A relay device includes mechanical relays, a first bus bar, a second bus bar, and a relay drive circuit. The relay includes a coil, a moving contact whose position changes according to whether the coil is energized, a load terminal conductive to the contact and connected to the first bar, and a coil terminal connected to the coil and second bar. The first bar includes a loading circuit. A current flows to an external load through the loading circuit opened/closed when the position of the contact changes. The second bar includes a coil circuit through which the coil is energized. The drive circuit is packaged on the second bar and opens/closes the coil circuit based on an operation signal. The first and second bars are stacked at predetermined intervals. The relays are between the first and second bars. | 02-25-2010 |
| 20090279266 | LOAD DRIVING SEMICONDUCTOR APPARATUS - A load driving semiconductor apparatus includes: a driving transistor, which operates based on an input voltage from an external circuit; a power semiconductor device controlling power supply to a load in such a manner that the power semiconductor device supplies electric power to the load when the transistor operates, and the power semiconductor device stops supplying electric power to the load when the transistor stops operating; and a mounting board, on which the driving transistor and the power semiconductor device are mounted. The mounting board includes a heat radiation pattern for emitting heat generated in the power semiconductor device. The heat radiation pattern includes a heat receiving pattern, on which the driving transistor is mounted. | 11-12-2009 |
