US3012117A

US3012117A - Mounting for the fixed contacts and the terminals of an electromagnetic relay

Info

Publication number: US3012117A
Application number: US717458A
Authority: US
Inventors: Bernier Raymond
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-02-28
Filing date: 1958-02-25
Publication date: 1961-12-05
Anticipated expiration: 1978-12-05
Also published as: FR1168721A; BE565098A; GB846042A; DE1060493B

Description

Dec. 5, 1961 Filed Feb. 25, 19

MOUNTING FOR 58 TERMINALS OF R. BERNIER THE FIXED CONTACTS AND THE AN ELECTROMAGNETIC RELAY 2 heets-Sheet 1 Dec. 5, 1961 R BERNIER 3,012,117 MOUNTING FOR THE FIX ED CONTACTS AND THE TERMINALS OF AN ELECTROMAGNETIC RELAY Filed Feb. 25, 1958 2 Sheets-Sheet 2 Rag 1a 6M4 MM United States Patent Ofilice 3,012,117 MOUNTING FOR 'IHE FIXED CONTACTS AND THE TERMINALS OF AW ELECTRGMAGNETIC RELAY The present invention relates to electromagnetic relays having a frame carrying a core and a mounting comprising fixed contacts and relay terminals constituted by tongues of which one part, preferably the central portion, is embedded during the moulding in a block of insulating material.

It is one object of the present invention to provide such an electromagnetic relay with an improved mounting which can be easily, rapidly, accurately and firmly settled on the frame by an unskilled worker, without recourse to instruments nor additional pieces of material.

It is another object of the present invention to provide electromagnetic relays wherein the frame is provided with a notch having two parallel edges, and the block of insulating material of the mounting is provided with two parallel grooves extending throughout two opposite faces of said block and forcibly engaged upon the parallel edges of the notch of the frame.

The block of insulating material may have the general form of an elongated parallelepiped and the grooves may be longitudinally or transversely oriented relative to said block.

With these and other objects in view which will become apparent in the following detailed description, the present invention will be clearly understood in connection with the accompanying drawings, in which:

FIGURE 1 is a front elevational view of a relay, the fixed contacts of which and the relay terminals are mounted in accordance with the present invention;

FIG. 2 is a side elevation of the relay terminals shown in FIG. 1;

FIG. 3 is a fragmentary top plan view corresponding to FIG. 1;

FIGS. 4 and 5 are, respectively, front and side elevational views of a modification of the relay; and

FIG. 6 is a plan view corresponding to FIG. 4 of the part of the plate which carries the insulating supporting strips of the terminals.

Referring now to the drawings, and in particular to FIG. 1, the relay frame 1 carries the coil 2 and a movable armature 6 pivoted at 7 on the frame 1. The armature 6 comprises a cranked extension 8 which co-operates with an abutment 9 integral with the frame 1. A return spring 11 is'provided for the armature 6.

Moving contacts 12 are integral with an insulating support 13, which is itself mounted on the armature 6.

In the illustrated example, the relay is bipolar and comprises two fixed contacts 21, two terminals 22 for current supply to the movable contacts 12 by flexible cables 23, and two

terminals

24, 25 which serve to conduct the current to the relay winding 2. Two other terminals 26 are not used in the mounting illustrated, but may serve in the numerous other more complex mountings, notably when the relay is installed in inverters. Each of the terminals comprises a metal tongue of which the central portion is embedded in a block 27 of insulating material of the general shape of a parallelepiped, forcibly engaged in a notch of the relay frame of which the two edges, forming tenons, are respeca coil, and at least 3,012,117 Patented Dec. 5, 1961 tively engaged in two longitudinal grooves 28 forming mortices extending over the full length of the block on which the two opposed faces perpendicular to those across which the tongues emerge (FIGS. 2 and 3).

In order to avoid the risk of the tongues slipping and coming out of the blocks, their portions which are sunk in the block have a narrow part which is shown in broken lines at 29 in FIG. 3.

The extremities of the tongues which project from the relay may serve for the branching of external circuits while their inner extremities may serve, for example, to carry the contact elements of the fixed contacts (contact element 31 on the tongue 21), for the connection from the winding (tongues 24, 25), and for the connection of a current supply cable to a movable contact (cable 23 connecting the tongue 22 to the movable contact 12).

Modification disclosed in FIGS. 4 to 6, are the insulating block 40, which support the tongues are fixed on the frame 1' of the relay by one of their extremities, which is engaged in a notch 41 of the frame 1, the two edges of the notch 41 being forcibly engaged in two grooves 42 cut on two opposed faces of this extremity of the block.

While I have disclosed several embodiments of the present invention, it is to be understood that these embodiments are given by example only and not in a limiting sense, the scope of the present invention being determined by the objects and the claims.

I claim:

1. An electromagnetic relay having a plate constituting a frame carrying a core and a coil, and at least a mounting comprising a plurality of fixed contacts and relay terminals constituted by tongues, a block of insulating material, one part of said tongues being embedded in said block, and said plate being provided on one of its edges with at least one notch having two parallel edges, and said block having two parallel grooves extending throughout two opposite faces of said block and forcibly engaged upon said parallel edges of said notch of said frame.

2. The electromagnetic relay, as set forth in claim 1, wherein said block of insulating material has the general form of an elongated parallelepiped and said grooves are disposed longitudinally relative to said block.

3. The electromagnetic relay, as set forth in claim 1, wherein said block of insulating material has the general form of an elongated parallelepiped and said grooves are disposed transversely relative to said block.

References Cited in the file of this patent UNITED STATES PATENTS 2,134,945 Howe Nov. 1, 1938 2,397,283 Martin Mar. 26, 1946 2,485,818 Dorjee Oct. 25, 1949 2,491,272 Knapp Dec. 13, 1949 2,520,526 Brouwer Aug. 29, 1950 2,534,864 Fritts Dec. 19, 1950 2,679,031 'Jaidinger May 18, 1954 2,781,501 McCroskey Feb. 12, 1957 2,831,939 Alizon et a1 Apr. 22, 1958 2,903,671 Dreher et al. Sept. 8, 1959 FOREIGN PATENTS 114,796 Austria Oct. 23, 1928 476,736 Italy Dec. 22, 1952 998,421 France Jan. 18, 1952