摘要:
In order to achieve reliable welding, by reducing welding scars, of a flat conductor to another bonding member by an ultrasonic welding machine, a curved beveled portion facing a bonding member, a plurality of indented grooves running at a right angle to the direction of vibration of the horn tip and flat surfaces, which come in contact with a bonding member, are formed at either one of or both of the horn tip and the anvil, wherein the curved beveled portions, the indented grooves and the flat surfaces are formed facing opposite a low strength conductive member, and the indented grooves are formed at a width that is smaller than that of the flat surfaces provided between the individual indented grooves and curved beveled portions are formed at the edges where the indented grooves meet the flat surfaces.
摘要:
A cover plate for covering exposed conductive wires of a flat cable is attached to a surface of an attaching plate for holding the flat cable, and insert molding is performed in such a manner that the cover plate is included. Therefore, direct contact of a portion of flows of synthetic resin for use in performing insert molding that flows along a surface of the attaching plate for holding the flat cable with conductive wires of the flat cable can be prevented. Moreover, if the synthetic resin introduced into another surface of the attaching plate for holding the electric wires flows in joint portions between the conductive wires, the conduction wires of the flat cable are pushed against the cover plate due to the flow of the synthetic resin so that the conductive wires of the flat cable are supported. Thus, the conductive wires of the flat cable can be protected from excess stress when the insert molding operation is performed. Thus, breakage of the conductive wires of the flat cable can be prevented.
摘要:
In a connector for electric wires (5) and a flat cable (6) in which said electric wires (5) and said flat cable (6) which have exposed conductor portions (5A, 6A) formed at distal ends of said electric wires (5) and said flat cable (6) are held along a plate surface of an attaching plate (21). The exposed conductor portions (5A, 6A) are welded to each other. Insert molding is performed using a synthetic resin material (70) such that at least one portion of said attaching plate (21) and a welded portion between the exposed conductor portions (5A, 6A) are covered, a window portion (25) is formed in said attaching plate (21), and a plurality of bus bars (30) whose front and rear surfaces are exposed to said window portion (25) are arranged at a pitch corresponding to a conductor pitch of said flat cable (6). The exposed conductor portions (6A) of said flat cable (6) and the exposed conductor portions (5A) of said electric wires (5) are sequentially stacked on each other on one surface of each bus bar (30). Said bus bars (30) and both the exposed conductor portions (5A, 6A) are welded to each other in this state, and the insert molding is performed to the conductive-exposed portions (5A, 6A) and said bus bars (30).
摘要:
Terminals (11, 13) for electrical connection respectively have front end portions (11b, 13b) to be joined to a wiring board (20) with solder and base end portions (11a, 13a) drawn outside from a cover (7) made of heat-expanding material. In order for the base end portions to absorb stress countering the external force received from the cover subjected to thermal expansion due to the heat generated by an electromagnetic coil (5) by the deflection deformation of the intermediate portions (11c, 13c) of the terminals positioned closer to the cover than the wiring board 20 with the relay device mounted on the wiring board, the terminals are formed with a predetermined length of L′ in the extending direction of the terminals so that the length required for necessary flexibility is secured for the intermediate portions.
摘要:
A joint section is provided which connects a flat cable having a plurality of conductive lines with a plurality of lead wires to a plurality of joint terminals. A first end of each of the joint terminals is formed in compliance with a pitch between the two adjacent conductive lines and the second end of the joint terminals is formed in compliance with a pitch between two adjacent lead wires. Each conductive line is held between the first end of the corresponding one of the joint terminals and an auxiliary terminal placed on the conductive line and connected by a welding operation. The second end of the joint terminal is connected with a conductor of the corresponding one of the lead wires.
摘要:
In order to standardize the conductors of a flat cable by changing an electrical resistance value of resistors provided in a bonding area where the flat cable is connected to lead wires and setting a specific value for the electrical resistance value of the entire signal transmission apparatus such as an air bag, the air bag circuit is provided with a flat cable, having a specific electrical resistance value and lead wires. The electrical resistance value of the entire circuit is set at a specific value by selecting the electrical resistance value of the resistors provided the a bonding area between the flat cable and the lead wires.
摘要:
To weld a flat conductor to another bonding member reliably without leaving a welding scar, a conductive protective member, such as copper plate or the like, with a higher strength than that of a low strength conductive member is placed between the low strength conductive member such as a flat conductor and the horn tip or the anvil to perform welding with the low strength conductive member sandwiched between the protective member and another bonding member such as stranded conductor or the like.
摘要:
A substrate unit is constituted by a printed substrate on which electronic parts such as a relay block is mounted, and at least printed circuit conductors and terminals in the printed substrate and relay block are buried in a sealing resin material hardened in a bag-like body of a thin resin film set in an injection mold, and the hardened sealing resin material is then released from the injection mold together with the bag-like body.
摘要:
Disclosed is a corrosion preventing circuit for a switch which, even if a large current switch is used for a small current system such as an electronic unit, can improve long-term durability of the switch in a manner similar to the present level without increasing the burden on the system side, thereby ensuring the reliability of devices belonging to the system. A series circuit consisting of a switching means and a current limiting resistor is connected in parallel to a resistor that is connected in series between a dc power supply and a large current switch. A control circuit turns on the switching means by generating a pulse of a predetermined time width after a predetermined time in accordance with the turning on of the large current switch. The current flowing while the switching means is being turned on is applied to the large current switch, so that an oxide film formed at the contact of the switch is destroyed.
摘要:
An ultrasonic welding method for welding a first metal sheet to a second metal sheet by using an anvil and a horn includes the following steps. The first metal sheet includes a protective portion, a protected portion and a middle portion therebetween. The protective portion is folded back over the protected portion along a return line on the middle portion. The first metal sheet is mounted on the second sheet in such a way that the protected portion lays between the protective portion and the second metal sheet. The first metal sheet may be a stripped conductive flat cable; the second metal sheet may be a copper sheet; and the middle portion of the first metal sheet may remain covered by its covering material.