Abstract: An electromagnetic relay having superior visibility and a light-emitting device easy to mount. A coil block and a contact opening and closing mechanism are disposed on a base plate and covered with a case, and the electromagnetic relay magnetizes and demagnetizes the coil block via coil terminals to turn a movable core and moves a movable contact part to open and close a contact. Electrical connection portions of the coil terminals are projected upwardly through the top side of the case. A light-emitting device which emits light by the energization of the coil terminals and a holder which holds the light-emitting device are disposed on the top side of the case on the side opposite to a position where the electrical connection portions of the coil terminals of the case are projected. Lead wires connected to the light-emitting device are electrically connected to the electrical connection portions of the coil terminals.

Abstract: The invention relates to a relay comprising a coil bobbin, a core penetrating the coil bobbin and a yoke. To achieve a high switching force with a low overall height, the cross-sectional area of the core is greater in the region toward the transition to the yoke than in the central region of the coil bobbin. Increased magnetic flux can be conveyed from the core owing to the cross-sectional enlargement and at the same time more coil windings can be arranged in the central region owing to the reduced cross-section there. Both measures act together and allow high switching forces with low overall height.

Abstract: An electrical switching element comprising a housing having an elongated base. An electrical coil is wrapped around a yoke and arranged in the housing such that a center axis of the electrical coil is positioned parallel to the elongated base of the housing. An armature having a first switching contact is mounted in a sprung manner and in operative connection with the armature. A first low-profile contact is connected to the first switching contact, and a second low-profile contact is connected to the second switching contact.

Abstract: In a relay (1) with two parallel contact springs (2a, 2b) which close or interrupt the electric circuit between a first and a second relay contact (3, 4), whose one end is connected in a conducting fashion to the first relay contact (3) and whose other free end (5a; 5b) closes or interrupts the electric circuit in a first end position and a second end position of the contact springs (2a, 2b), respectively, and with an armature (11) which can be adjusted by means of a magnetic field whose poles can be changed, for deflecting the contact spring (2a, 2b) into the respective end position, in accordance with the invention, a leaf spring (17) is centrally pivotably disposed on the armature (11) or its actuator (14) whose two free ends (18a, 18b) bias the two contact springs (2a, 2b) with force into the first end position.

Abstract: A relay with coupling element consists of at least one spring bracket with an active and a passive contact spring. In order mechanically to couple several such relays with one another, a coupling element is provided which is pluggably connectable with the respective spring brackets of the relays in order to create a twin relay from a single relay. If, beside the mechanical coupling, an electrical coupling also is to take place, then it is provided that at least one double contact spring is present, one part of which is allocated to the one spring bracket the other part of which is allocated to the oppositely lying spring bracket, and two contact springs are connected by the coupling element over an electrically conducting connection web.

Abstract: The invention relates to a relay designed with integral parts to simplify assembly, reduce manufacturing costs, and increase strength. The relay has a coil base member. The coil base member has a base member and a coil member integrally connected. The base member has an upper side, side faces and a bottom surface. The coil member has inner sides. The coil base member has a side opening that extends from the inner sides of the coil member to the upper side of the base member and to the side faces and bottom surface of the base member.

Abstract: An electromagnetic switching relay having a base member and a magnetized coil. The base member having first guide elements. The magnetized coil having a terminal and second guide elements positioned substantially between the first guide elements that engage the first guide elements. A partition layer that allows displacement of the magnetizing coil relative to the base member before the second guide elements engage the first guide elements and fixes the second guide elements to the first guide elements when the base member and the magnetized coil are pushed toward each other.

Abstract: An electromagnetic relay prevents appropriately invasion of a sealant. A coil block 3 produced by winding a coil 29 on a core 27 through a spool 28 and connecting the coil 29 to coil terminals 42 disposed at flanges 28a and 28b of the spool 28 is put onto a base 1. The through-holes 15 are sealed under the state where the coil terminals 42 protrude from the through-holes 15 formed in the base 1. An attraction surface 27a of the plate 27 is positioned on the side of the base 1 so that a moving iron plate 32 can be attracted and operated between the coil block 3 and the base 1. An increased thickness portion 41 into which the coil terminal 42 can be pushed is formed in each flange 28a, 28b of the spool 28 and a recess 43 for storing a sealant entering inside from the through-hole 15 is formed around the coil terminal 42.

Abstract: An electromagnetic relay acquires a satisfactory operation without generating wear dust, though having a simple construction. A moving contact plate and fixed contact plates are juxtaposed with one another on a base. A moving iron plate is rotated on the basis of magnetization/demagnetization of a coil block put on the base to reciprocate a card in a horizontal direction. The moving contact plate is allowed to undergo elastic deformation so that a moving contact provided to the moving contact plate is brought into contact with and out of contact from fixed contacts and provided to the fixed contact plates. An upper end portion of the moving contact plate is bent in such a fashion as to form card acceptance portions positioned at least at upper and lower positions, and a distal end portion of the card is brought into contact with an inner surface of the card acceptance portions.

Abstract: A safety relay comprising an electrically insulating carrier part, an electromagnetic drive arranged on the carrier part, at least one control contact arranged on the carrier part, at least three load contacts arranged on the carrier part wherein each of the load and control contacts is forcibly guided by a common comb connected with the electromagnetic drive and each load and control contact having two contact springs, each of the contacts springs comprising, a contact head, a spring foot at a distance from the contact head, and at least one fastener part connected with the spring foot, the contact springs being supported solidly with the spring foot in the carrier part wherein at least one of the contacts forms a working contact and another one a resting contact, a rigid stop arranged on the carrier part next to which is located the contact head in the vicinity of one of the contact springs, the other one of the contact springs of the contact engaging the comb in such a way that the movement of the contact

Abstract: A field configurable contactor is disclosed. The contactor preferably includes a plurality of spaces adapted to receive any number, up to its limit, of contact modules. Each contact module preferably includes a pair of contacts and a spring biased cam follower which opens and closes the contact pair when a cam profile of the contactor moves according to energization or de-energization of the contactor. The contact module can be either “normally open” or “normally closed” depending on its initial placement onto the contactor relative to the cam profile. A latch assembly in the contactor may hold the contactor mechanically during de-energization.

Abstract: An electromagnetic relay having a base and an armature. The base having a first fixed contact support having a first fixed contact and a second fixed contact support having a second fixed contact. The armature having a first end and a second end. A contact bridge mechanically coupled to the first end by a transfer spring and having a first moveable contact and a second moveable contact. The contact bridge positioned between the first fixed contact support and the second fixed contact support such that the first fixed contact is substantially adjacent to the first moveable contact and the second fixed contact is substantially adjacent to the second moveable contact. An armature spring positioned on the second end of the armature for urging the contact bridge toward the first fixed contact.

Abstract: The invention concerns a switching appliance comprising several main dual cut-out poles provided with fixed contacts housed in an arc box and mobile contacts located on a mobile contact-holder (30). The latter is equipped, for the main contacts, with main housings (31) aligned transversely to the direction (X) of displacement of the contact-holder (30), and, for the auxiliary contacts, secondary housings (32) aligned transversely to the direction (X) and located in front of the main housings (31). The contact-holder comprises between the main housings and the secondary housings a vertical insulating wall (35). The arc box consists of two half boxes (20, 40) assembled in a horizontal plane, so that one of the two halves provides guiding elements and stop elements for the contact-holder (30).

Abstract: An activator is arranged on, in or at a slide which is common to the contacts of a relay. A sensor, which can be activated by means of the activator, is arranged in the vicinity of the slide. Using the contactless generation of a control signal by the activator in the sensor during the monitoring of the switched position, or the switching movement of the contacts, an adjustment of the monitoring device is possible electronically and/or by the change of the location of the elements of the monitoring device. This reduces the adjustment outlay considerably and allows the reduction of the drive mechanism, since fewer springs need to be moved and therefore the force required for switching the relay is reduced.

Abstract: A safety relay comprising a separating wall, an electromagnetic drive located on a first side of the separating wall comprising a coil with core and yoke, the coil being connectable to a control current, the core being oriented parallel to the separating wall, and a movable armature, a comb located on a second side of the separating wall capable of moving parallel to the separating wall by means of the armature, and a row of several contacts located on the second side of the separating wall actuated by the drive comb, each of the contacts comprising at least two contact elements arranged on an electrically insulating carrier part each of the contacts being connected with a current connection element, at least one of the contact elements being formed by an elongated contact spring arranged between the comb and the separating wall, the contact spring being arranged with a spring longitudinal axis crosswise to the direction of the movement of the comb, forcibly guided by the comb and by a spring foot at one end

Abstract: The invention relates to a relay designed with integral parts to simplify assembly, reduce manufacturing costs, and increase strength. The relay has a coil base member. The coil base member has a base member and a coil member integrally connected. The base member has an upper side, side faces and a bottom surface. The coil member has inner sides. The coil base member has a side opening that extends from the inner sides of the coil member to the upper side of the base member and to the side faces and bottom surface of the base member.

Abstract: Casing 5 is formed with a recess 67 toward an internal space in which the internal components are not located. The recess 67 is formed with a gate portion 69 as a resin inlet for forming the casing 5, and a bleeder portion 68 which is opened during a sealing operation and then sealed.

Abstract: An electromagnet includes a plate-like yoke, shaped like L, with a curved surface portion, a rectangular iron core connected to said yoke and wound by a coil, an armature rotatably and pivotally supported by one end of said yoke, said armature being driven by said coil and coupling device for coupling said yoke with said iron core by spin press-fitting.

Abstract: A relay device capable of reducing the manufacturing costs thereof by decreasing the number of parts and the number of electrical connections between these parts, and making the manufacturing process simple. The relay device has a plurality of electromagnetic relays and uses a common base plate with which stems of the electromagnetic relays are formed integrally, and on which a wiring member is formed by resin molding. The wiring member on the common base plate is projected from the molded resin to define a fixed contact member of each electromagnetic relay. Each relay unit assembly of each electromagnetic relay except for the fixed contact member thereof is secured to the common base plate such that a movable iron piece is driven in parallel with a surface of the common base plate. The construction of the resultant relay device is compact, the relay properties are readily adjusted, and the number of parts can be reduced.

Abstract: An electromagnetic relay including a base, an electromagnet incorporated to the base, an armature movably arranged relative to the electromagnet, and a contact section incorporated to the base to be actuated by the armature. The electromagnet includes a bobbin, a coil having a center axis and carried on the bobbin, and a pair of coil terminals mounted to the bobbin. Each of the coil terminals is provided with a first end region and a second end region, extending in respective directions transverse to each other. The coil terminals are disposed in such a manner that respective first end regions extend in a direction transverse to the center axis of the coil to project outward from the bobbin and are arranged side-by-side in a row extending substantially parallel to the center axis, and that respective second end regions extend in a direction parallel to the center axis of the coil to project outward from the bobbin and are arranged side-by-side in a row extending substantially transverse to the center axis.

Abstract: For the purpose of testing a relay, a safety relay comprises a key (12) arranged in a housing cover and which acts upon a lever (38) pivotally mounted on the inside of the housing. Due to the pivoting of the lever a movable switching contact carrier of the relay is moved. To avoid excessive deviation of the switching contact carrier through excessive lever force and therefore a possible plastic deformation of the contact carrier springs, the force which is possibly applied to the switching contact carrier is restricted by a U-shaped spring (40) held by the lever (38). A pressure leg (48) is biased by a latching lug (52a, 52b) supported by a peg formed as one piece with the lever (38). Consequently the switching contact carrier is moved via the spring with only a predetermined maximum force, so that a deformation of the springs supporting the contact pieces is avoided and the contact pieces maintain the required specified contact distance.

Abstract: The electromagnetic relay has a motor assembly with a bobbin secured to a frame. A core is disposed within the bobbin except for a core end which extends from the bobbin. An armature end magnetically engages the core end when the coil is energized. An actuator engages the armature and a plurality of center contact spring assemblies. The center contact spring assembly is comprised of a center contact spring ultrasonically welded onto a center contact terminal. A normally open contact spring is positioned relatively parallel to a center contact spring. The normally open contact spring is ultrasonically welded onto a normally open terminal to form a normally open contact spring assembly. A normally closed contact assembly comprised of a third contact rivet and a normally closed terminal.

Abstract: A relay includes a base, at least on set of contact mechanism, a container on the rear side of the base, an electromagnetic mechanism arranged inside the container, a slide piece disposed between the moveable contactor of the contact mechanism and the moveable plate of the electromagnetic mechanism as well as above the electromagnetic mechanism. And a housing covers all components mentioned above. The improvement of the present invention is characterized in that there is a distance from the electromagnetic mechanism to the inner wall of the container after it is disposed into the container. A driver pushes a moveable plate forwardly so that the electromagnetic mechanism can move the moveable contactor through the slide card for contacting the front fixed contactor properly. Afterwards, the frame of electromagnetic mechanism is also pushed by the driver and moved on with a preset distance. Then put glue to attach the electromagnetic mechanism onto the base.

Abstract: A safety relay comprising a separating wall, an electromagnetic drive located on a first side of the separating wall comprising a coil with core and yoke, the coil being connectable to a control current, the core being oriented parallel to the separating wall, and a movable armature, a comb located on a second side of the separating wall capable of moving parallel to the separating wall by means of the armature, and a row of several contacts located on the second side of the separating wall actuated by the drive comb, each of the contacts comprising at least two contact elements arranged on an electrically insulating carrier part each of the contacts being connected with a current connection element, at least one of the contact elements being formed by an elongated contact spring arranged between the comb and the separating wall, the contact spring being arranged with a spring longitudinal axis crosswise to the direction of the movement of the comb, forcibly guided by the comb and by a spring foot at one end

Abstract: An electromagnetic relay having a motor assembly with a bobbin secured to a frame. A core is disposed within the bobbin except for a core end which extends from the bobbin. An armature end magnetically engages the core end when the coil is energized. An actuator engages the armature and a plurality of movable blade assemblies. The movable blade assembly is comprised of a movable blade ultrasonically welded onto a center contact terminal. A normally open blade is positioned relatively parallel to a movable blade. The normally open blade is ultrasonically welded onto a normally open terminal to form a normally open contact assembly. A normally closed contact assembly comprised of a third contact rivet and a normally closed terminal. A normally closed contact assembly is vertically positioned with respect to the movable blade so that the normally closed contact assembly is in contact with the movable blade assembly when the movable blade is not being acted upon by the actuator.

Abstract: The electromagnetic relay has a motor assembly with a bobbin secured to a housing. A core is adjacently connected below the bobbin except for a core end, which extends from the bobbin. An armature end magnetically engages the core end when the coil is energized. An actuator engages the armature and a plurality of center contact spring assemblies. The center contact spring assembly is comprised of a center contact spring which is not pre bent and is ultrasonically welded onto a center contact terminal. A normally open spring is positioned relatively parallel to a center contact spring. The normally open spring is ultrasonically welded onto a normally open terminal to form a normally open outer contact spring assembly. A normally closed outer contact spring is vertically positioned with respect to the center contact spring so that the normally closed outer contact spring assembly is in contact with the center contact spring assembly, when the center contact spring is not being acted upon by the actuator.

Abstract: Electromagnetic switching device including a movable contact-holder fitted with a set of contact bridges bearing movable power contacts that operate in conjunction with fixed contacts, and an electromagnet composed of a coil, a fixed framework and movable framework. The movable contact-holder includes an assembling device including at least one elastic clipping foot for fastening the movable contact-holder of the electromagnet to the movable contact-holder, characterized in that the assembling device is equally suitable for direct and indirect assembly of the movable framework onto the movable contact-holder according to the type of movable framework used in DC or AC electromagnets.

Abstract: An electromagnetic switchgear unit has an electromagnetic drive appliance which acts as an auxiliary magnet system and by means of which the contact force is first increased on the occurrence of a short-circuit current, before the contacts are abruptly torn apart. For this purpose, the drive appliance actuates a lever rotatably supported on the contact bridge carrier, which lever displaces the contact bridge carrier and, by this means, compresses a contact compression spring and a further compression spring.

Abstract: An electromagnetic switching device (2) with restricted guidance, in which the closure contacts do not come into contact when the break contact is welded or fixed. An elastically resilient transmission lever (10) is provided to establish the effective connection between the armature (8) and the contact support (12) extending at a distance from and parallel to the armature.

Abstract: In a miniaturized relay for explosion endangered regions, the coil, core, and yoke are cast integrally into the carrier part. Restricted guidance contact units are disposed on the carrier part, on both sides of a partition. The armature is disposed on the side of the coil remote from contacts. A comb connects the armature on the one side of the coil body with the contact springs on the other side of the coil body. In the region in which the comb passes by the coil body, a guide for the comb is embodied on the carrier part. The partition has an extension which reaches into this guide region next to the coil. This extension and the rest of the partition are provided with a groove into which a rib on the cap encompassing the relay protrudes in order to elongate the air and leakage path between the contact units on the one side of the partition and the contact units on the other side of the partition.

Abstract: A single-pole relay switch capable of effective arc extinction irrespective of the current flowing directions in which the device is connected in a circuit. The switch has a housing and two sets of contacts located in the housing, each set being composed of a fixed contact and a movable contact. A contact carrier is provided to have first and second movable arms which extend commonly from a bridge and are provided respectively with the two movable contacts. An actuator applies a driving force to move the contact carrier between an ON-position of holding the movable contacts simultaneously in contact respectively with the fixed contacts, and an OFF-position of keeping the movable contacts at respective opening gaps from the fixed contacts. The housing includes a casing which is divided into first and second chambers respectively for receiving the contact sets, each of the first and second chambers being surrounded by a dielectric wall.

Abstract: In connection with a relay with contact units on both sides of a partition and with plug connectors which can be plugged vertically in relation to the partition, a very compact construction is achieved by offsetting the contact units arranged on the top side of the partition with respect to the contact units arranged on the bottom side, and by passing the plug connectors through the partition and between the electrically conductive elements arranged on the bottom side. Thanks to offsetting the plug connectors with the connecting element on the centerline (M), a very large distance can be achieved between the plug connectors, which meets all minimal requirements for a safe separation of different potentials. Labyrinthine courses for air and leakage paths between the circuit units and with respect to the actuating member can be created it the interior in the relay by the partition, separating walls, covers and collars, which also meet these requirements.

Abstract: An electrical switching device prevents moving contacts from welding to stationary contacts in a switching device. This is achieved using an auxiliary magnet system in the main current path, which system produces a contact pressure force corresponding to the excitation current so that no arcs are produce between the contacts when overcurrents and short-circuit currents occur. The moving iron core of the auxiliary magnet system is for this purpose connected to the contact link mounting via which the contacts are switched on and off.

Abstract: An inexpensive electromagnetic relay with a simple configuration is provided which does not require a sliding core to attain the desired operating characteristics. The electromagnetic relay includes a movable component which is supported on an upper end of a coil block in a way that the movable component can freely rotate. The movable component further comprises a movable contact element and a movable iron member. The movable contact element and the movable iron member are isolated from each other by a retainer. The movable contact element, movable iron member and retainer all form a single piece. The retainer further comprises a first retainer portion for retaining the movable contact element, and a second retainer portion for retaining the movable iron member. The first and second retainer portions are also formed into a single piece.

Abstract: An electromagnetic drive for a switch, preferably a motor protective circuit-breaker. The electromagnetic drive has a magnetic system, whose movable armature serves to actuate switching contact elements in the switch. The armature is coupled to a transmission lever by a leaf spring. One end the leaf spring is fixedly clamped and the other end of the leaf spring is connected to the transmission lever in such a way that the transmission lever is actuated when the leaf spring flexes and thus the free end of the leaf spring is displaced.

Abstract: In a seesaw type electromagnetic relay comprising an armature carrying out a seesaw motion by excitation of an electromagnet, and a movable spring which carries out the seesaw motion in synchronism with the seesaw motion of the armature and which comprises a par of spring sections, at least one of the spring sections forks into two branches to form a pair of spring pieces one of which is bent downward. A pair of movable contacts is mounted at both free end parts of the movable spring on a bottom surface of the movable spring. One of the movable contacts is mounted at the free end part in the spring pieces on bottom surfaces thereof to form a pair of movable contact elements acting as a twin movable contact. A pair of fixed contacts faces the pair of movable contacts.

Abstract: A relay is formed by a magnet system containing a wound coil body, an L-shaped core arranged axially therein, an L-shaped armature and a base element with terminal elements. Stationary and moving contact elements are arranged between the base element and the magnet system. The armature is mounted with the free end of its transverse leg at the free end of the longitudinal leg of the core. The armature is secured through a U-shaped armature spring wrapping around the armature. The spring is secured with one arm at the longitudinal leg of the armature and a second arm is inserted in a recess between the coil body and the core. The actuation of the moving contact elements is provided via a slide coupled to the armature. This slide is hooked to the armature by spring tabs of the armature spring at opposing sides of the armature through snap latches formed at the ends of the side arms of the slide.

Abstract: A contact-unit slide for contractors which includes an insulating body in which windows are drilled wherein in each of these windows a contact bridge and a compression spring associated with the contacts are housed, the slide being moved by the mobile parts of the contactor's electromagnet, the spring bearing on the opposite side of the support surface adjacent to the contact bridge. The body has slots extending between a window and a visible surface to allow it to be supported on the upper end of the associated spring.

Abstract: An electromagnetic relay assembly includes an actuator unit and at least one switch unit detachably connected with the actuator unit. The actuator unit includes an actuator casing accommodating therein an electromagnetic assembly and a movable actuator frame magnetically attracted by the electromagnetic assembly to move between first and second positions. The switch unit Includes a switch casing accommodating therein a switch assembly capable of selectively assuming one of an ON state in response to movement of the movable actuator frame from the first position to the second position and an OFF position in response to movement of the movable actuator frame from the second position to the first position. The actuator casing and the switch casing have mating engagement members by which the actuator unit and the switch unit can be separably connected together while the movable actuator frame in the actuator unit can be drivingly coupled with the switch assembly In the switch unit.

Abstract: In the case of the relay, an insulating wall which has at least three insulating layers is formed between the magnet system and a live metal part, in that the insulating wall is formed from a wall base having at least one insulating gap, and in that the insulating layer is formed in the insulating gap by insulating material which is inserted in liquid form and is subsequently cured.

Abstract: Relay with positively guided contact or contact sets, each contact being accommodated in a chamber and being at least partially separated from the adjacent contacts, and, furthermore, an actuator being provided for respectively opening and closing the contacts, the actuator being of multi-component design. The components of the actuator can be displaced with respect to one another here, the drive not acting on all the components of the actuator.

Abstract: An improved relay includes a base (20) integrally molded defining a pair of notches (24) for matingly receiving a mounting structure (26) comprised by a motor assembly (10) of the relay, so as to determine the relative positions of the motor assembly (10) and the base (20) with a high degree of reliability. The other components of the relay are similarly secured in corresponding predetermined positions by fitting within other mounting structures molded into the base member (20).

Abstract: In an electromagnetic relay in which a contact mechanism 50 provided on a base 10 is driven by a card 60 which slides and moves in parallel to the axis of an electromagnet block 20 provided in the base 10 as the electromagnet block 20 is magnetized and demagnetized, the base 10 comprises a guide portion 17 for restricting the card 60 in its position. This prevents variations in the performance characteristics so that high productivity and long service life of contacts can be obtained.

Abstract: An improved relay of conventional design is disclosed wherein the relay has an armature and at least one moveable contact element. A slide is attached to the armature and moveable contact element. The slide is of a length matched to the actual distance between the armature and the moveable contact element after the armature and moveable contact element are secured to a base and moved to a contact position.

Abstract: An electromagnetic relay includes a pair of contacts of high fusion-bonding resistance and a further pair of contacts of low contact resistance, which pairs being connected mutually in parallel relationship, with an actuator of an electromagnet unit interposed between them and respectively having a movable contactor carrying a movable contact of the pair and provided for contact opening and closing with respect to a stationary contact of the pair by means of the actuator of the electromagnet unit, whereby the pair of contacts of low contact resistance can be prevented from causing any fusion-bonding and any temperature rise around the pair can be effectively restrained.

Abstract: An electromagnetic relay, comprising: a case consisting of a terminal base and a cover fitted thereon; a pair of contact units arranged laterally on the terminal base; an electromagnet unit arranged in the case on a longitudinal end of the contact units; an upper longitudinal insulating wall depending from an upper inner wall surface of the cover between different ones of the contact units; a lower longitudinal insulating wall projecting from an inner surface of the terminal base so as to correspond to the upper longitudinal insulating wall; and an actuating member made of electrically insulating material for transmitting a drive force of an armature of the electromagnet unit to the contact units; a guide structure being defined between a lower end of the upper longitudinal insulating wall and an upper end of the lower longitudinal insulating wall so as to guide movement of the card along a longitudinal direction as it is actuated by an armature of the electromagnet unit to actuate the contact units between t

Abstract: An electromagnetic relay with a return spring is described, where the relay consists of a solenoid coil with a movable armature as the drive and a contact spring assembly, and there is an actuating rod that starts from one end of the armature and engages with spiral springs by means of catches for actuation of the contact, whereby the return spring at the other end of the actuating rod returns the contact spring assembly to home position.In order to achieve a significant reduction in force with the contact spring assembly in actuating the relay, the reset spring here is designed as a top dead center spring such that when the relay is driven against the return spring, the force needed to bend the spring is reduced.

Abstract: An electromagnetic relay comprises an elongated coil bobbin having an axially extending bore and carrying therearound an excitation coil, a generally U-shaped yoke with first and second yoke members, and a generally U-shaped armature with short and long legs connected by a web. The yoke and the armature are magnetically coupled together partly within the axial bore of the coil bobbin to form a magnetic circuit with the excitation coil such that the armature is movable between a set position of closing a relay contact and a reset position of opening the relay contact. The first yoke member extends into the axial bore to define at its free end a first pole end while the second yoke member extending outwardly of the excitation coil to define a second pole end. The short armature leg extends into the bore in an overlying relation with the first pole end, while the long armature leg extends outwardly of the coil in adjacent relation to the second pole end.

Abstract: In a miniaturized electromagnetic relay wherein an insulation is provided in a housing separating the magnet and contact system, there are provided a rib integral with the housing having a dogleg for partially encapsulating the armature and a pocket on the actuator for the nesting of a free swivelling end of the armature.

Abstract: An electromagnetic relay constructed by assembling an electromagnet portion including an armature of a straight bar shape arranged adjacent to a magnetic pole piece; a fixed contact spring; and a spring holding portion including a movable contact spring driven by a card driven by the armature, so that the precise portional relationship between elements of the electromagnetic relay is realized.