EP1135786A1 - Elektromagnetisches kleinrelais - Google Patents
Elektromagnetisches kleinrelaisInfo
- Publication number
- EP1135786A1 EP1135786A1 EP99963193A EP99963193A EP1135786A1 EP 1135786 A1 EP1135786 A1 EP 1135786A1 EP 99963193 A EP99963193 A EP 99963193A EP 99963193 A EP99963193 A EP 99963193A EP 1135786 A1 EP1135786 A1 EP 1135786A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- spring
- relay according
- wing
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/22—Polarised relays
- H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
- H01H51/2281—Contacts rigidly combined with armature
- H01H51/229—Blade-spring contacts alongside armature
Definitions
- the invention relates to an electromagnetic relay
- a base made of insulating material, which defines a base plane with its bottom side and carries fixed contacts and connections for movable contact springs,
- An insulating spring support which is connected to the armature and carries a contact spring on both longitudinal sides of the armature, each contact spring forming two spring arms, which differ from the clamping in the
- Each spring carrier extends opposite to each other next to an anchor wing and the contacting free ends thereof cooperate with a fixed contact, each contact spring further forming a bearing band emerging from the spring carrier, which is connected to a connection support anchored in the base,
- a core arranged axially in the coil, at the ends of which are connected to the armature-oriented pole shoes, each of which forms a working air gap with an armature end, and
- a permanent magnet arrangement which generates two magnetic poles of the same name in both pole shoes and an opposite magnetic pole in the region of the armature axis of rotation.
- Such a relay is described for example in EP 0 197 391 B2.
- the two movable contact springs are located laterally next to and in a plane with the armature, while the bearing strips follow in the form of torsion bars in the direction of the axis of rotation extend outside and are connected in the same plane with connection supports of the base. This means that the length of the torsion bars extends into the entire width of the relay.
- a similarly constructed relay is known from EP 0 691 030 B1, in which the bearing strips emerge from the spring support in a direction parallel to the longitudinal direction of the armature and are bent just next to the armature in a direction perpendicular to the base plane in order to be fastened to the bearing supports running parallel thereto to become.
- the movable contact springs are arranged below the armature; however, this in turn affects the overall height of the relay.
- the aim of the present invention is to build a relay of the type mentioned at the outset for the purpose of further miniaturization even more compact and thereby to provide a monostable characteristic constructively, a space obtained by the structural asymmetry to be used sensibly for accommodating coil or contact connection elements to reduce the overall size of the relay.
- this goal is achieved in the relay of the type mentioned in that of the two Anchor wings the second has a smaller width than the first and the contact spring arrangement in the region of the second anchor wing is adapted to its smaller width.
- Monostability of the magnet system is achieved in that the armature has two wings of different widths and the space gained thereby does not remain unused in the generally cuboid housing, but the contact spring arms next to the narrower armature wing - if there are any - are also moved inwards, so that, for example, coil connections can be passed in this area and in particular the bearing tapes for the armature, which also serve as connections for the contact springs, do not require any additional width of the overall construction.
- the pole shoes are preferably also adapted to the correspondingly different width of the armature wing, so that the pole shoe associated with the second armature wing has a reduced width with a correspondingly smaller pole area than the pole shoe facing the first armature wing.
- FIG. 1 shows two main assemblies, a magnet assembly and a base assembly, which together form a relay according to the invention
- FIG. 2 shows a fully assembled relay with an encapsulated magnet system, partially cut away, in a perspective view
- FIG. 3 shows the magnet assembly from FIG. 1 in individual parts (without winding)
- FIG. 4 shows a perspective illustration of the magnetic circuit parts of the relay from FIG. 1 (without coil former)
- Figure 5 shows the armature contact spring assembly of Figure 1 before assembly
- Figure 6 shows the armature assembly with the base of the relay of Figure 1 prior to assembly.
- the relay shown in Figures 1 to 6 consists of two large assemblies, which are shown in Figure 1, namely a magnetic assembly 1 and a base assembly 2, which are plugged together and then give the complete relay.
- the magnetic assembly 1 is first overmolded with a plastic sheath 3 (FIG. 2), so that a tight housing is formed by being plugged together and glued.
- the magnet assembly 1 as the carrier according to FIG. 3 has a coil former 10 with two flanges 11 and 12, between which two webs 13 run as winding carriers.
- a core 14 can be inserted from below into the gap 13a between these two webs 13.
- a winding 15 (FIG. 1) is then applied to the winding carrier formed by the webs 13 and the core 14.
- two coil terminal pins 16 are also anchored; these extend perpendicular to a base plane 4 next to inwardly offset base sections 49 of the base assembly 2 to the underside of the finished relay.
- the core 14 forms, with U-shaped bent ends, pole shoes 17 and 18, which form pole faces 17a and 18a relative to an anchor to be described later.
- the first pole piece 17 is made wider than the second pole piece 18, so that the pole face 17a formed by the first pole piece is also larger than the pole face 18a of the second pole piece.
- a permanent magnet 20 is inserted between the two pole pieces 17 and 18 (see also FIG. 4) which, in adaptation to the differently sized pole pieces 17 and 18, also has two sections of different widths, namely a first magnet section 21 with a larger width and a second magnet section 22 with a smaller width.
- the permanent magnet 20 is lengthwise in a known manner magnetized three-pole, so that it has two poles of the same name at both ends, in the example south poles S and in the middle an opposite pole, in the example a north pole N. Correspondingly, it also generates south poles S in the two pole shoes 17 and 18, while an anchor 24 to be described is mounted below the central north pole N.
- This anchor 24 is designed as a rocker armature with two anchor wings 25 and 26, between which it has a roof-shaped embossed central section 27, with which it is mounted below the central pole N of the permanent magnet 20 (while maintaining a more or less large bearing air gap) or without special storage is arranged to be pivotable about an axis of rotation 6.
- the armature wing 25 has the same width as the pole piece 17 with which it forms a first working air gap 7; the armature wing 26 is reduced in width as is the pole piece 18, with which it forms a second working air gap.
- a contact spring assembly 28 connected to the armature has a spring support 29 made of plastic, which connects two contact springs 30 and 31, which are separate from one another, by overmolding.
- Each of the two contact springs consists of two spring arms which emerge in opposite directions to one another from the sheathing of the spring support 29, namely the contact spring 30 from a first spring arm 32 and a second spring arm 33 laterally offset from it, the second contact spring 31 from a first spring arm 34 and also laterally internally offset second spring arm 35.
- each contact spring also has a bearing band 36 or 37, which emerges in alignment with the first spring arm 32 or 34, but opposite thereto, from the spring carrier 29 and into a plane perpendicular to the base plane is bent at the top, where it is attached via a fastening tab 36a or 37a to a connection support 46a or 47a of the base, for example by welding.
- Each of the spring arms 32, 33, 34 and 35 is forked at the free end for double contact and at each
- the spring support 29 also forms a trough-shaped receptacle 38 for the armature 24 in the area between the two contact springs 30 and 31.
- This receptacle 38 is provided with insulating walls 39 which are raised all around, so that even with very small structural distances, adequate insulation between the contact springs 30 and 31 on the one hand and the anchor 24 on the other hand is guaranteed.
- the internal dimensions of the armature receptacle 38 are moreover adapted exactly to the contour of the armature, so that in the region of the narrower armature wing 26 the insulating walls 39 are also displaced inwards and enable the inward displacement of the second spring arms 33 and 35. In this way, space is created laterally from the spring arms 33 and 35 for the arrangement of the coil connecting pins 16.
- bearing tapes 36 and 37 can be cut in addition to the spring arms 33 and 35 from the same sheet metal plate.
- both contact springs with their spring arms and the bearing tabs are prefabricated from a common circuit board and overmolded with plastic to form the spring assembly 28.
- the armature 24 is held in a form-fitting manner in the receptacle 38 by appropriate design of the side walls 39.
- the spring assembly 28 connected to the armature is shown again completely in FIG. 6, as it is assembled with a base 40 to form the base assembly according to FIG. 1.
- the base 40 has a flat bottom 41, the underside of which defines the base plane 4.
- contact connecting tracks cut free from a circuit board are anchored by extrusion coating with plastic.
- it is a fixed contact carrier 42,43,44 and 45, which are each below the movable spring arms 32,33,34 and 35 and each carry fixed contact pieces at their ends.
- two contact spring connections 46 and 47 are anchored in the base, which are angled vertically upward
- connection supports 46a and 47a Form connection supports 46a and 47a.
- the fastening tabs 36a and 37a are welded to these connection supports 46a and 47a during assembly. Since the mounting surfaces between the connection supports and the mounting tabs run perpendicular to the base plane, the bearing tapes can with their
- Connection tabs are aligned in height so that the contact springs have the correct contact distance to the respective fixed contact carriers or their contact pieces; After the appropriate alignment, the fastening tabs are welded. However, it is also possible to pivot the spring assembly 5 together with the armature 24 by a certain angle about the axis of rotation of the armature and thus to set a preferred position during the fastening, so that a monostable switching behavior is preset or additionally reinforced in this way .
- the attachment can be done by resistance welding, laser welding or in any other way.
- the dimensioning of the bearing bands 36 and 37 makes it possible to set a desired spring rate regardless of the thickness of the contact springs.
- the vertical connection of the bearing strips also results in a high shock resistance of the relay.
- the contact connection elements 42 to 47 anchored in the base also each have a downwardly bent connecting pin 42a to 45a or 46b and 47b. As can be seen in FIG. 2, the connection pins can also be bent at right angles for the purpose of surface mounting.
- the magnet system 1 according to FIG. 1 which is preferably encapsulated according to FIG. 2, is pushed onto the base assembly 2.
- Side walls 48 are arranged on the base so that the encapsulated magnetic system clamped between them.
- downwardly projecting lugs 11a with the coil connecting pins 16 guided in them are dimensioned such that they grip over inwardly displaced base sections 49 and likewise contribute to the fixing.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19850668 | 1998-11-03 | ||
DE1998150668 DE19850668C1 (de) | 1998-11-03 | 1998-11-03 | Monostabiles polarisiertes Kleinrelais |
DE1998150667 DE19850667C1 (de) | 1998-11-03 | 1998-11-03 | Elektromagnetisches Kleinrelais |
DE19850667 | 1998-11-03 | ||
PCT/DE1999/003512 WO2000026932A1 (de) | 1998-11-03 | 1999-11-03 | Elektromagnetisches kleinrelais |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1135786A1 true EP1135786A1 (de) | 2001-09-26 |
EP1135786B1 EP1135786B1 (de) | 2002-10-09 |
Family
ID=26049920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99963193A Expired - Lifetime EP1135786B1 (de) | 1998-11-03 | 1999-11-03 | Elektromagnetisches kleinrelais |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1135786B1 (de) |
DE (1) | DE59903065D1 (de) |
WO (1) | WO2000026932A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107833792B (zh) * | 2017-11-07 | 2020-03-06 | 厦门宏发信号电子有限公司 | 一种高耐压的超小型电磁继电器 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19719357C1 (de) * | 1997-05-07 | 1998-10-22 | Siemens Ag | Elektromagnetisches Relais |
-
1999
- 1999-11-03 DE DE59903065T patent/DE59903065D1/de not_active Expired - Fee Related
- 1999-11-03 WO PCT/DE1999/003512 patent/WO2000026932A1/de active IP Right Grant
- 1999-11-03 EP EP99963193A patent/EP1135786B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0026932A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59903065D1 (de) | 2002-11-14 |
EP1135786B1 (de) | 2002-10-09 |
WO2000026932A1 (de) | 2000-05-11 |
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