摘要:
There is provided a drive lever incorrect assembly detection portion (9d) and (14) which causes another end portion (9a) of a drive lever (9) to protrude to a position, of a case (4), to which a cover (5) is attached such that the cover (5) cannot be attached to the case (4) in a state where the drive lever (9) is assembled in an incorrect direction.
摘要:
There is provided a drive lever incorrect assembly detection portion (9d) and (14) which causes another end portion (9a) of a drive lever (9) to protrude to a position, of a case (4), to which a cover (5) is attached such that the cover (5) cannot be attached to the case (4) in a state where the drive lever (9) is assembled in an incorrect direction.
摘要:
Within a case (4), are accommodated an electromagnet (8) having a fixed core (8c) and a movable core (8d) capable of contacting and separating from the fixed core (8c); a movable contact point support (7a) which moves in parallel with the movable core; a return spring (7b) which causes the movable contact point support to return to an initial position; and a driving lever (9) which rotates with a rotation support point portion (9a) provided on one end thereof as a support point, and which transmits attraction movement and release movement of the movable core to the movable contact point support. The rotation support point portion of the driving lever is fitted into and supported by a support point recess (5a) provided in an inner face of an extinction cover (5) mounted on the case.
摘要:
First fitting portions (9a and 9b) and second fitting portions (9c and 9d) are arranged in a hook shape on the bottom (3a) of a housing to face each other. The first fitting portions are fittingly engaged to one rail edge (2a) of a rail (2) in the width direction and the second fitting portions are fittingly engaged to the other rail edge (2b) of the rail. A linear spring (10) bent in a mountain shape is disposed on the bottom of the housing. The linear spring elastically deforms to reduce the inclination angle of the mountain by contacting the end surface of the one rail edge engaged to the first fitting portions. The urging force of the linear spring urges the rail such that the other rail edge is pressed by the second fitting portions.
摘要:
A mounting unit for an electromagnetic contactor can prevent erroneous mounting of a non-mountable unit in a state in which a mountable unit is mounted on a case-side mounting portion, and a connection structure of an electromagnetic contactor uses the mounting unit. A mounting unit (3) for an electromagnetic contactor can be mounted on electromagnetic contactors (2a, 2b) having on a unit attaching portion (6b) a contactor-side mounting preventing portion (6f) that prevents mounting by engagement when a non-mountable unit, which cannot be mounted, is mounted. In the mounting unit (3), a unit main body (39) is provided with a mounting preventing transfer member (51) that forms a unit-side mounting preventing portion (54) that engages with a contactor-side mounting preventing portion (6f) when mounted on the electromagnetic contactors (2a, 2b) and prevents mounting of the non-mountable unit on a unit mounting portion (3g) onto which the non-mountable units (5a, 5b) are mounted.
摘要:
A reversible unit (10) is attached by being mounted over a pair of adjacently disposed electromagnetic contactors (1a) and (1b). The reversible unit (10) includes a pair of interlock plates (11) and (12), a lock piece (13), and a unit case (10b) accommodating the pair of interlock plates (11) and (12) and the lock piece (13). The lock piece (13) rotates in a first direction with the movement of one of the interlock plates (12) in a turn-on operation of one of the electromagnetic contactors (1a) to prevent the movement of the other interlock plate (11), and rotates in a second direction different from the first direction with the movement of the other interlock plate (11) in a turn-on operation of the other electromagnetic contactor (1b) to prevent the movement of one of the interlock plates (12). The unit case (10b) is provided with a lock piece display window (10g) which allows determination of the rotation of the lock piece (13) in the first direction or the second direction.
摘要:
Within a case (4), are accommodated an electromagnet (8) having a fixed core (8c) and a movable core (8d) capable of contacting and separating from the fixed core (8c); a movable contact point support (7a) which moves in parallel with the movable core; a return spring (7b) which causes the movable contact point support to return to an initial position; and a driving lever (9) which rotates with a rotation support point portion (9a) provided on one end thereof as a support point, and which transmits attraction movement and release movement of the movable core to the movable contact point support. The rotation support point portion of the driving lever is fitted into and supported by a support point recess (5a) provided in an inner face of an extinction cover (5) mounted on the case.
摘要:
An extinction cover (5) is mounted on a case (4) thereby sealing an extinction chamber (S). This extinction cover has an engaging-force-increased portion (5c1) which strengthens the force of engagement with the case, and an engaging-force-decreased portion (5c2) which weakens the force of engagement with the case. In response to an increase in internal pressure in the extinction chamber due to arc gas generation, the engaging-force-decreased portion establishes disengagement of the case and provides a gap (27) with the case, for linking the extinction chamber to external air, and the engaging-force-increased portion maintains engagement with the case.
摘要:
A plurality of terminal chambers (20a) to (20e) is formed in a housing (16) by using a plurality of partition walls (24a) to (24e) to partition. In the terminal chambers, fixed contactors (31) each having a fixed contact point (31d) and a terminal screw (31a) are mounted. Engaged portions (31b) are formed integrally with the fixed contactors. Further, a press-fit engaging portion (26) is provided in each of the terminal chambers. The terminal chamber is formed as a space different from a space accommodating a movable contact point support, and the press-fit engaging portion is engaged by the engaged portion by press-fitting.
摘要:
An electromagnetic contact device has a contactor holder (40), which moves a mounted movable contactor (42a) according to a displacement of a movable core (32) forming an electromagnet (30) for operation. The contactor holder (40) is being housed together with the electromagnet (30) for operation in a case (1). The case (1) has a lower case portion (10) housing the electromagnet (30) for operation and an upper case portion (20) engaging with the lower case portion (10) while being stacked on the lower case portion and houses the contactor holder (40) advanced from above. The upper case portion (20) has a recess (21) with an upward opening and houses the contactor holder (40) placed on the bottom wall of the recess (21). The lower case portion (10) houses one selected either a DC-only electromagnet (30b) or an AC-only electromagnet (30a).