Abstract: The present disclosure relates to a connector and a continuity test device. The connector includes a connector housing having a block portion being provided with a terminal accommodating chamber, and a front holder insertion space being adjacent to the block portion for inserting a front holder that detects terminal half-insertion from a front side. The connector housing is formed with a groove for detecting erroneous fitting into a continuity test device. The groove for detecting erroneous fitting is fitted with a projection provided on the front holder when the front holder is inserted into the front holder insertion space. The groove receives a convex portion provided on a fitting port of the continuity test device when the connector housing is fitted into the fitting port of a continuity test device for a connector without the front holder.

Abstract: In a terminal holding structure of a connector, a straight portion of a terminal is press fitted into a terminal holding hole formed on a terminal holding wall of a resin housing, so as to be held therein. At least a pair of projecting portions projecting to both sides in a direction orthogonal to a press-fitting direction is formed on the outer surface of a region of the straight portion of the terminal corresponding to the terminal holding hole. The projecting portions are formed with the cross-section orthogonal to the straight portion including a wedge-shaped dent at a distal end. The dents are formed such that a dimension between bottom portions is larger than the dimension of the terminal holding hole at the position into which the projecting portions are press fitted. This enhances the holding power to the terminal, and enables the terminal to be held stably.

Abstract: A leaf spring portion turning back at a bottom wall (first side wall portion) and coming into contact with a male terminal of a connector on the other side to press the male terminal to a ceiling wall (second side wall portion) is formed in a tubular-shaped main terminal body portion in a terminal, the main terminal body portion is formed when a metal plate is bent in a tubular shape such that a pair of end edges approaches each other to form the ceiling wall (second side wall portion), and depressed portions bending toward an inside of the main terminal body portion and extending in a longitudinal direction of the main terminal body portion are provided in a pair of respective wall portions forming the ceiling wall (second side wall portion).

Abstract: A leaf spring portion turning back at a bottom wall (first side wall portion) and coming into contact with a male terminal of a connector on the other side to press the male terminal to a ceiling wall (second side wall portion) is formed in a tubular-shaped main terminal body portion in a terminal, the main terminal body portion is formed when a metal plate is bent in a tubular shape such that a pair of end edges approaches each other to form the ceiling wall (second side wall portion), and depressed portions bending toward an inside of the main terminal body portion and extending in a longitudinal direction of the main terminal body portion are provided in a pair of respective wall portions forming the ceiling wall (second side wall portion).

Abstract: In a terminal holding structure of a connector, a straight portion of a terminal is press fitted into a terminal holding hole formed on a terminal holding wall of a resin housing, so as to be held therein. At least a pair of projecting portions projecting to both sides in a direction orthogonal to a press-fitting direction is formed on the outer surface of a region of the straight portion of the terminal corresponding to the terminal holding hole. The projecting portions are formed with the cross-section orthogonal to the straight portion including a wedge-shaped dent at a distal end. The dents are formed such that a dimension between bottom portions is larger than the dimension of the terminal holding hole at the position into which the projecting portions are press fitted. This enhances the holding power to the terminal, and enables the terminal to be held stably.

Abstract: A waterproof structure is achieved by inserting a covered electric wire 40 obtained by covering an outer periphery of a conductor portion 41 with a cover portion 42 made of a resin into an electric wire inserting hole 28 of a connector main body 21 inserted to a terminal receiving chamber 24 in a state of being connected to a terminal received in a terminal receiving chamber 24 of the connector main body 21 and welding the cover portion 42 and the electric wire inserting hole 28 in accordance with a ultrasonic oscillation and a pressurization from an outer side. The connector main body 21 has a weld depth setting portion 47 for setting a weld depth, whereby an excessive welding is prevented.

Abstract: An ultrasonic welding structure is provided for a chip body 11 and a lid body 12 to be welded to each other by using ultrasonic waves. The chip body 11 is provided with a welding recess 15 defined by tapered sidewalls 15A, 15A. While, the lid body 12 is provided with a welding projection 17 also defined by tapered sidewalls 17C, 17C, for engagement with the welding recess 15. The chip body 11 and the lid body 12 in their assembled condition are subjected to ultrasonic oscillation characterized by its amplitude direction A. Then, since the welding surfaces of the sidewalls 15A, 17C each has a projected area with respect to the amplitude direction A, the welding surfaces are welded to each other owing to frictional heat resulting from the ultrasonic oscillation. With this welding structure, the chip body 11 is perfectly welded to the lid body 12 by one time of ultrasonic oscillation.

Abstract: A waterproof structure for an electric wire drawout portion is low in manufacturing cost and enhanced in waterproofness. A cover portion is formed on an end portion of a housing and on this cover portion there is mounted a lower rubber-like elastic member. An upper cover portion is welded to the cover portion by ultrasonic oscillation and on the upper cover portion there is mounted an upper rubber-like elastic member brought into pressure contact with the lower rubber-like elastic member and an electric wire. On the cover portion and the upper cover portion there are integrally formed lower and upper projections exposed on surfaces of the lower and the upper rubber-like elastic member.

Abstract: A connector is provided with waterproof structure. In the structure, a covered wire having a conductor covered with a cover part is connected with a terminal and inserted into a wire insertion hole communicating with a terminal accommodating chamber of a connector body. The waterproof structure is provided by welding the cover part to a connector part defining the wire insertion hole due to ultrasonic oscillating and pressing from outside. The wire insertion hole is provided with a diametrical portion capable of adhering to a cover part of the thinnest wire of the covered wires having differential diameters. Owing to the provision of the diametrical portion, the waterproof structure allows the connector to cope with the covered wires having different diameters.

Abstract: A connection structure for connecting a covered wire and terminal includes a first member having groove portion, a terminal to be incorporated in the groove portion, a covered wire to be placed on the terminal; and a second member having a convex portion for clogging the groove portion, wherein, while pressing the covered wire by the second member, ultrasonic vibration is applied thereto so as to melt a cover portion of the covered wire thereby placing the covered wire and core elements of the covered wire into conductive contact with each other, the terminal having a wire connecting portion including a bottom wall on which the covered wire is to be placed and vertical walls raised from side edges of the bottom wall, the vertical wall having a gap relative to the convex portion.

Abstract: A waterproof connector is provided. The connector includes a housing 12 having terminal accommodating chambers 15 for accommodating terminals 14 and a cover 13 overlaid on the housing 12 to define wire insertion holes 20 between the cover 13 and the housing 12. The cover 13 is provided with a fall-stop engagement part 31 which engages with respective rear ends of the terminals 14 in order to prevent them from falling out of housing 12. In order to provide the connector with a waterproof structure, a resinous cover part 3 of each covered wire 1 is welded to both housing 12 and cover 13 by ultrasonic oscillating the housing 12 under pressure while each wire 1 is inserted into the wire insertion hole 20. Further, owing to the ultrasonic oscillation, the housing 12 is also welded to the cover 13 in the resultant waterproof structure.

Abstract: A terminal for ultrasonic wave connection is to be nipped between a first member and a second member, while a covered wire having core elements and a cover portion covering external circumference thereof is stacked on the terminal. The cover portion is melted by applying ultrasonic vibration, while the first and second members are pressed, so that the terminal and core elements are conductively contacted with each other. The terminal includes a relief portion for releasing the melted cover portion. The relief portions are provided at a portion to which the covered wire is to be connected.

Abstract: A wire connecting structure of a connector comprises a connector housing, a terminal holding portion protruding from an end of the connector housing, terminal incorporating holes which are provided in the terminal holding portion and communicate with the connector housing, terminals disposed within the terminal incorporating holes, covered wires placed on the terminals, and upper hole wall portions which are provided in the terminal holding portion to define upper portions of the terminal incorporating holes and when pressed, subside into the terminal incorporating holes so as to contact the covered wires, core elements of the covered wire and the terminal being subjected to ultrasonic vibration through the upper hole wall portion which is pressed so as to contact the covered wire, so that the core elements and the terminal are conductively contacted with each other, the upper hole wall portion being settled by fusion in each of the terminal incorporating holes by the ultrasonic vibration.

Abstract: A connection method is proceeded by: placing a covered electric wire (18) on a terminal (17); applying an ultrasonic vibration in a state of pressing the covered electric wire (18) against the terminal (17) so as to melt and remove a covering portion (26); arranging a plurality of core wires on the terminal (17) in parallel; and pressing the arranged core wires (25) against the terminal (17) so that the core wires (25) and the terminal (17) conductively contact with each other.

Abstract: A connecting structure for connecting a covered wire to a terminal is provided. The connecting structure includes a first member and a second member to be laid on the first member. In arrangement, the terminal is interposed between the first member and the second member. The covered wire having core lines covered with an insulating cover is disposed on the terminal. In order to spread the core lines on the terminal, the first member is provided with a projection which extends perpendicular to a direction of the core lines of the covered wire. In manufacturing, the insulating cover is molten by vibrating the second member on the covered wire by ultrasonic waves. Consequently, the core lines are forcibly brought into contact with an end of the projection having a small frictional resistance. Thus, the core lines of the covered wire can be uniformly spread to increase contact area between the core lines and the terminal.

Abstract: The present invention relates to a waterproof electrical connector housing. Terminal members connected with electrical wires are accommodated in a terminal holding section of a connector housing. An adhesive agent is applied to the terminal holding section and a cover is placed over the adhesive agent and the terminal holding section. By subjecting the housing to ultrasonic vibrations, the adhesive agent hardens to seal the wires and terminal members from the environment. The ultrasonic vibrations and hardening of the adhesive agent also welds the cover to the connector housing.

Abstract: A waterproof structure for an electric wire drawout portion is low in manufacturing cost and enhanced in waterproofness. A cover portion is formed on an end portion of a housing and on this cover portion there is mounted a lower rubber-like elastic member. An upper cover portion is welded to the cover portion by ultrasonic oscillation and on the upper cover portion there is mounted an upper rubber-like elastic member brought into pressure contact with the lower rubber-like elastic member and an electric wire. On the cover portion and the upper cover portion there are integrally formed lower and upper projections exposed on surfaces of the lower and the upper rubber-like elastic member.

Abstract: Terminals are inserted into groove portions of a first member and a covered wire is mounted on each of the terminals. Protrusions of a second member are engaged with the groove portions of the first member. The second member is pressed so that the covered wires are pressed against press-fit blades of the terminal so as to attain electric conductivity. By ultrasonic vibration in the pressing condition, the first member and second member are fused with each other. At the same time, by ultrasonic vibration, the cores of the covered wires are fused with each other and the core and the press-fit blades are fused with each other. By the fusing of the cores mutually and the core and press-fit blades, the contact area is increased thereby decreasing contact resistance.

Abstract: An ultrasonic welding terminal which is suitable for ultrasonic welding of a covered wire is provided. The terminal is composed of a bottom plate in form of a sheet metal and an elastic contact piece connected with the bottom plate, for generating a force of repulsion. In an ultrasonic welding structure where, between a first resinous member and a second resinous member, the terminal is connected with the wire, even if the core lines are displaced by the shrinkage of the first and second members, the elastic contact piece can follow to such a displacement owing to the force of repulsion.

Abstract: A terminal has a lower plate and an upper plate and is accommodated in a groove portion of a connector housing. A covered wire is inserted between the lower plate and upper plate. When a cover is mounted over the groove portion, a protrusion of the cover presses the terminal so that the upper and lower plates are closed. By ultrasonic vibration, a covering portion of the covered wire is melted and removed and cores are pinched between the upper and lower plates and held. An engaging pawl is engaged with the upper plate thereby the pinching condition of the cores being held. As a result, even if contacting load is reduced due to a change of the temperature or like reason, the contact condition between the covered wire and the cores are securely maintained.