Abstract: In a low insertion force connector, fitting members 30 and 40 are constituted respectively by a first cam member 30 and a second cam member 40 opposed to each other in a hood portion 21. In each of the first and second cam members, cam grooves 36, 46 for respectively guiding cam projections 12 and 13 are formed respectively in opposed walls 32, 42 of a frame-like body 31, 41. Fitting guide portions 37, 47 for respectively receiving the cam projections are formed respectively in extension walls 33, 43 extending respectively form the opposed walls. A window 35, 45 is formed in a guide groove 34, 44 formed in the extension wall, and is connected to an outlet of the cam groove. The extension walls of the first cam member are received respectively in the guide grooves in the second cam member, and the extension walls of the second cam member are received respectively in the guide grooves in the first cam member.

Abstract: A connector includes a housing and a front holder. The housing includes a terminal receiving chamber formed therein, the terminal receiving chamber being receivable a terminal therein, the terminal receiving chamber including a flexible retaining lance which is arranged to extend from an inner wall of the terminal receiving chamber, the retaining lance being preventable the terminal coming off while retaining the terminal, and a refuge space formed under the retaining lance. The front holder includes a main body portion and a flexion preventing portion preventable a flexion of the retaining lance by entering into the refuge space, the flexion preventing portion being arranged to extend from the main body portion, the front holder is insertable into the housing from a surface of the housing engageable with a mating connector so as to be retained in the housing.

Abstract: In the low insertion force connector of a slide type, one connector housing 10 includes in the interior portion thereof a guide member 20, and a lock engaging portion 22 formed on the fitting side of the guide member 20; the other connector housing 30 includes a pair of flexible lock arms 33 provided through a pair of slits 32 respectively formed in the two side walls in the longitudinal direction thereof, and a pair of lock hold portions 34 respectively formed in the mutually opposing inner walls of the lock arms 33 and on the fitting side thereof; and, if the lock engaging portion 22 is engaged with the lock hold portions 34, then one and the other connector housing 10 and 30 can be secured to each other temporarily.

Abstract: A connector housing has a body portion and a hood portion. An insertion detecting member for terminal lugs is movable from provisional locking position to full locking position inside the hood portion. A resilient, terminal-lug locking piece extends in each terminal accommodating cavity in the housing body portion to form a displacement permitting space on a side opposite a side where a terminal lug is inserted. The insertion detecting member has a main frame, insertion detectors corresponding to the displacement permitting spaces, and a pair of manipulating portions at opposite sides of the main frame. When in provisional locking position the manipulating portions are exposed at opposite sides of the housing body portion, and when in full locking position the insertion detectors move into the displacement permitting spaces. The insertion detecting member is easily movable from provisional locking position to full locking position inside the housing hood portion.

Abstract: In the metal piece 32 which diffuses into the fuse element so that an alloy layer is generated, there is formed an expanding slot 30, which is inserted and pressured in the fusing portion 25b of the fusible body 25 which forms the fuse element. Due to the foregoing, the metallic mass 32 of low fusing point is fixed to the fusible body 25 while it surrounds the circumferential surface of the fusing portion 25b.

Abstract: In a low insertion force connector in which connector housings are mutually fitted to each other through a fitting guide member, the fitting guide member is constituted by a movable member and an operating member, the movable member being provided with cam slots and a cam follower, the operating member being provided with a driving cam slot for engaging with the cam follower, whereby cam projections formed on one of the connector housings are inserted in and engaged with the cam slots so as to push the operating member in the fitting direction to thereby move the movable member through the cam follower inserted in and engaged with the driving cam slot to make the connector housings fit to each other.

Abstract: A method of forming a chain of fuse-links made from an electrically conductive metal plate. Each fuse-link P4 has an arc-shaped fusing portion 1 and a couple of terminal portions 4, 4 constituting a pair of wing-shaped members connected to each end of the arc-shaped fusing portion 1. A carrier strap 9 has a plurality of vertical connecting pieces 8 each positioned at fixed intervals for retaining the plurality of fuse-links P4. Each of a plurality of interconnection pieces 7' is connected to the vertical connecting piece 8 at one end and connected to a side edge of specific side one of the couple of terminal portions at the other end. The other end of the interconnection piece 7' is bent so that the end edges of the couple of terminal portions 4, 4 rise above the carrier strap 9.

Abstract: A slowly-breaking fuse includes a housing made of a synthetic resin, a fuse element including a pair of terminal members for an electrical connection, and a melting member mounted between the terminal members, the melting member being smaller in thickness than the terminal member, the melting member having a narrow elongated central portion and a pair of base portions between which the narrow elongated central portion is mounted, and a cross-sectional area increased member provided at an opposite end of the melting member.

Abstract: A metal chip of low-melting metal having a cavity is fixedly held by an embracing portion of a fusible portion of a fuse of a fusible metal conductor. The metal chip has a predetermined outer diameter, and by changing a diameter of a through hole defining the cavity, the volume of the cavity can be adjusted. By doing so, fusion characteristics of the fusible portion can be adjusted.

Abstract: There are provided a resilient engaging piece to the terminal metal part provided through the resilient displacement permissible space opposite to the terminal accommodating cavity formed at a connector body portion of the connector, and the insertion detecting body corresponding to the resilient displacement permissible space at the main frame portion of the insertion detecting member for terminal metal parts and a pair of manipulating pieces each at opposite sides thereof. The insertion detecting member for terminal metal parts is caused to move freely to enable the main frame portion thereof to come into contact with the inside wall surface of the hood portion. The pair of manipulating pieces are exposed at both sides of the housing body portion through the window of the hood portion at the provisional engaging position, and the insertion detecting body can be moved to enter into the resilient displacement permissible space at the formal engaging position.

Abstract: A plurality of retaining piece portions are formed at an edge of a tubular body of a female electrical connection member, and the retaining piece portions are bent to clampingly retain plural portions in one end of a resilient contact piece. As a result, the retaining piece portions can be bent easily, and a crack is prevented from developing at the bent portion. And besides, since the resilient contact piece is fixed by the retaining piece portions at the plurality of portions thereof spaced from one another, stresses, concentrating on the fixed portions of the resilient contact piece, are distributed on the fixed portions, so that permanent set of the resilient contact piece due to deterioration of its resiliency can be prevented.

Abstract: A slowly-breaking fuse includes a housing made of a synthetic resin, a fuse element including a pair of terminal members for an electrical connection, and a melting member mounted between the terminal members, the melting member being smaller in thickness than the terminal member, the melting member having a narrow elongated central portion and a pair of base portions between which the narrow elongated central portion is mounted, and a cross-sectional area increased member provided at an opposite end of the melting member.

Abstract: A chain of fuse-links is made from an electrically conductive metal plate. Each fuse-link P4. has an arc-shaped fusing portion 1 and a couple of terminal portions 4, 4 constituting a pair of wing-shaped members connected to each end of the arc-shaped fusing portion 1. A carrier strap 9 has a plurality of vertical connecting pieces 8 each positioned at fixed intervals for retaining the plurality of fuse-links P4. Each of a plurality of interconnection pieces 7 is connected to the vertical connecting piece 8 at one end and connected to a side edge of specific side one of the couple of terminal portions at the other end. The other end of the interconnection piece 7' is bent so that the end edges of the couple of terminal portions 4, 4 rise above the carrier strap 9.

Abstract: The present invention provides a delayed-fusion fuse by which its predetermined durability can be reliably ensured, and its stable pre-arcing time-current characteristics can be obtained, even when a current exceeding the steady-state current such as a motor lock current frequently flows in the fuse. The delayed-fusion fuse includes a pair of electric connecting sections formed on both sides of a fusible section having a narrow fusing portion made of an electrically conductive metal. Also, the delayed-fusion fuse includes a metallic chip made of low fusing point metal for absorbing heat generated in the fusible section, and a covering and adhering section for holding the metallic chip on the fusible section. A thin metallic layer forms a solid solution with the low fusing point metal, where the solid solution requires an energy of formation which is higher than that of the formation of a solid solution made of the electrically conductive metal and the low fusing point metal.