Abstract: A connector (A) is provided with a housing (10) made of synthetic resin, press-fit holes (13) formed through the housing (10) and each having a substantially rectangular cross-sectional shape, and terminal fittings (20) to be inserted into the press-fit holes (13). Each terminal fitting (20) has a first press-fit portion (25) with a substantially rectangular cross-section and brings two substantially parallel flat areas (26) into surface contact with the inner wall of the press-fit hole (13) in a fluid- or liquid-tight manner. The first press-fit portion (25) has first and second bulges (27A, 27B) that locally bulge in forward and backward directions parallel to the two flat areas over the entire areas in a width direction connecting the two flat areas (26) and press the inner wall of the press-fit hole (13) in a fluid- or liquid-tight manner.

Abstract: An air hole (29) is formed to penetrate through a back wall (23) of a receptacle (22). Leading end portions (61) of male terminal fittings (60) are inserted into an inner portion (28) of a tube (27) and the air hole (29) communicates with the inner portion (28). If a female connector is connected in a posture inclined from a proper connecting posture, the tube (27) interferes with the female connector to prevent any further connecting operation. The tube (27) surrounds a plurality of male terminal fittings (60) together. A wall (31) for partially closing openings of the inner portion (28) is formed at a leading end portion of the tube (27).

Abstract: A female connector (F) is formed such that a block-shaped terminal accommodating portion (21) accommodating female terminal fittings (24) is surrounded by a substantially rectangular tubular fitting (35). A male connector (M) includes a rectangular tubular receptacle (11) to be fit into a clearance between the terminal accommodating portion (21) and the tubular fitting (35) and tabs (13) at the leading ends of male terminal fittings (12) are surrounded by the receptacle (11). Bulges (51, 52 and 53) are formed on four wall portions (37, 38 and 39) of the tubular fitting 35 and bulge outward of the tubular fitting (35) from an opening edge part at a front side of the tubular fitting (35).

Abstract: A connector includes a one-piece rubber plug (30) arranged to cover a rear surface (10R) of an inner housing (10) and has seal holes (31) aligned with cavities 12. An outer housing (20) has a tubular portion (21) surrounding the inner housing (10) and a rear wall (24) covering a rear surface (30R) of the one-piece rubber plug (30). The rear wall (24) has insertion holes (25) aligned with the seal holes (31). Locking holes (26A, 26B) are open on a rear surface (24R) of the rear wall (24), and locks (17A, 17B) on the inner housing (10) engage with the locking holes (26A, 26B) to lock the housings (10, 20) in an assembled state.

Abstract: An air hole (29) is formed to penetrate through a back wall (23) of a receptacle (22). Leading end portions (61) of male terminal fittings (60) are inserted into an inner portion (28) of a tube (27) and the air hole (29) communicates with the inner portion (28). If a female connector is connected in a posture inclined from a proper connecting posture, the tube (27) interferes with the female connector to prevent any further connecting operation. The tube (27) surrounds a plurality of male terminal fittings (60) together. A wall (31) for partially closing openings of the inner portion (28) is formed at a leading end portion of the tube (27).

Abstract: A connector (A) is provided with a housing (10) made of synthetic resin, press-fit holes (13) formed through the housing (10) and each having a substantially rectangular cross-sectional shape, and terminal fittings (20) to be inserted into the press-fit holes (13). Each terminal fitting (20) has a first press-fit portion (25) with a substantially rectangular cross-section and brings two substantially parallel flat areas (26) into surface contact with the inner wall of the press-fit hole (13) in a fluid- or liquid-tight manner. The first press-fit portion (25) has first and second bulges (27A, 27B) that locally bulge in forward and backward directions parallel to the two flat areas over the entire areas in a width direction connecting the two flat areas (26) and press the inner wall of the press-fit hole (13) in a fluid- or liquid-tight manner.