JPS63264839A - Electromagnetic relay - Google Patents

Abstract

PURPOSE:To facilitate the coil winding by forming a lead terminal having an end processing section connected with the end of a coil at one end and a connecting section for the external connection at the other end and supporting the middle portion of the lead terminal with a coil bobbin. CONSTITUTION:A coil bobbin 11 wound with a coil 12 on the outer periphery, an armature 15 swayably inserted into the coil bobbin 11 and driven when the coil 12 is excited, a pair of yokes 13 with the magnetic pole faces 14 facing the principal section of the armature 15 and constituting a magnetic circuit, and a card 20 driven by the armature 15 to open or close the contact section are provided. A lead terminal 17 having a terminal processing section connected with the end of the coil 12 at one end and a connecting section for the external connection at the other end is formed, and the middle portion of the lead terminal 17 is supported by the coil bobbin 11. Since the middle portion of the lead terminal 17 is supported by the coil bobbin 11, no long metal component exists, and the winding of the coil is facilitated.

Description

[Detailed description of the invention]

[Industrial Application Field 1] The present invention relates to an electromagnetic relay such as a polarized electromagnetic relay. [Prior Art 1] Conventionally, when connecting the terminal of a coil to the outside, a long metal part has been used because the connection part with the outside needs to extend to the outside of the electromagnetic relay. This makes it difficult to wind the coil onto the coil bobbin. In order to prevent this, it is necessary to separate the metal parts from the winding portion, creating wasted space.

[Problems to be Solved by the Invention] The present invention has been provided in view of the above-mentioned points, and provides an electromagnetic relay for the purpose of facilitating coil winding. [Means for Solving 1 Problem] [Operation 1] The present invention comprises a coil bobbin having a coil wound around its outer periphery, an armature that is swingably inserted into the coil bobbin and is driven when the coil is energized, and an armature that is driven when the coil is energized. An electromagnetic relay is equipped with a pair of yokes that form a magnetic circuit with their magnetic pole surfaces facing each other in the main part of the pole, and a card that is driven by the armature to open and close the contact part. By forming a lead terminal having a terminal processing portion to be connected and a connecting portion for external connection at the other end, and supporting the intermediate portion of the lead terminal with the coil bobbin, the intermediate portion of the lead terminal is supported by the fill bobbin. This makes it easier to wind the coil, and also prevents the coil from breaking due to unnecessary soldering heat being added to the terminal processing area even when external wires or terminals are connected to the connection part. It is characterized by the following. [Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1 to 4 and 5 to 8 show embodiments of the present invention formed as 2T type and 4T type polarized electromagnetic relays, respectively. 2 in Figures 1 to 4
The T type has a first switch part A consisting of a pair of fixed contact terminals 3, 4, a movable contact spring plate 6, and a movable contact terminal 7, and a second switch part A having the same configuration as the first switch part A. The switch parts B are arranged on the upper surface near both side edges of the synthetic resin base 8, and the movable contact spring plates 6, 6 of both the switch parts A and B are arranged by an electromagnet block 9 arranged in the center of the synthetic resin base 8. This figure shows an embodiment in which the motor is driven. In addition, the 4T type shown in FIGS. 5 to 8 has a first switch part A consisting of a pair of fixed contact terminals 3, 4, a movable contact spring plate 6, and a movable contact terminal 7, and this first switch. A second switch part B having the same configuration as part A is disposed on the upper surface near both side edges of the cow part of the synthetic resin base 8, and
Switch parts C and D of the third tISA having the same configuration as the first switch part A are arranged on the upper surface near both side edges of the other half of the synthetic resin base 8, and are arranged in the center of the synthetic resin base 8. Each of the above switch parts A, B,
This shows an embodiment in which the movable contact spring plates 6 of C and D are driven. Thus, the electromagnetic block 9 is composed of a coil 12.degree. 12a wound around a coil bobbin 11 formed by molding, yokes 13, 13, and an armature 15. The central parts of the two yokes 13.13 are bridged by a permanent magnet (not shown) below the coil 12 = 12 m, and magnetic pole surfaces 14 facing each other and having different polarities are provided at both ends of these yokes 13.13. ... is formed. coil bobbin 11
is formed into a cylindrical shape, around which a coil 12*12a is wound, and an armature 15 made of a magnetic material is installed in the cylindrical hole of the coil bobbin 11.
is inserted, and both ends of the armature 15 at both ends of the fill bobbin 11 are interposed between the magnetic pole faces 14 of the yokes 13 and 13. In this way, the armature 15 is pivoted at both ends (in the case of 2T type) or at the middle part within the coil bobbin 11 (in the case of 47 type), so that the free end is selectively attracted between the magnetic pole faces 14 and 14. There is. Here, the coil bobbin 11 is a 2T type or a 4T type.
In the case of the type, each has a flange 16.16a at both ends or both ends and the center, but in this case, the flange 16 at one end in the case of the 2T type, or the central flange in the case of the 4T type. Reference numeral 16 has a thick wall, and as shown in the figure, lead terminals 17 are punched and formed into a substantially U-shape, and the curved portion sides thereof are integrally embedded. These lead terminals 17...
Each terminal portion of the lead terminal 17 projects outward from the flange portion 16, and one end portion 17a of these lead terminals 17 is made slightly narrower and the protruding dimension from the flange portion 16 is shortened, and a coil 12 is attached to this end portion 17m. .12a is wrapped around it and connected by soldering, and the other RA part 17b is wider than the end part 17a and protrudes from the flange part 16.
7b is bent slightly forward or backward as necessary, and then press-fitted into the notch 19 at the upper end of the coil terminal 18 integrally molded on the synthetic resin base 8. here,
One end 17a of the lead terminal 17 is the terminal J! ! The other end portion 17b constitutes a connecting portion. Further, the middle part of the lead terminal 17 is buried when the coil bobbin 11 is molded, and the lead terminal 17 is buried in the coil bobbin 11.
It is held by the collar part 16 of 1. The electromagnet block 9 formed as described above is arranged on the synthetic resin paste 8, and the base end is fixed to the movable contact terminal 7, and a movable contact is arranged on the side of the electromagnet block 9 and substantially parallel thereto. Card 2 with spring plates 6 interspersed at the end of the armature 15
0.20, the first. By parallel movement of the card 20 in the second switch parts A, B (in the case of 2T type) or the first to fourth switches ff1SA, B, C, D (in the case of 47 type), the switching connection between "connection" and "α" is made. I am trying to do this. Each switch part A...
- The fixed contact terminals 3 and 4 and the movable contact terminal 7 are integrally implanted through the synthetic resin base 8, and between the fixed contacts 1 and 2 fixed to the upper ends of the fixed contact terminals 3 and 4 facing each other. ,
A movable contact whose base end is fixed to the upper end of the movable contact terminal 7 is interposed with the tip of the α spring plate 6 so that the fixed contacts 1 and 2 are opposed to the movable contacts 5 and 5' on the front and back surfaces of the movable contact spring plate 6. There is. In each switch part A to D, the fixed contact terminals 3 in the switch part A and the switch part C are formed in the shape of a mounting plate with almost no bending in the longitudinal direction of the synthetic resin base 8, and are formed on the lower surface of the synthetic resin base 8. The fixed contact terminals 3 in the switch parts B and D have a horizontal piece part 3b, while the composite t# The fixed contact terminal 4 located on the outer edge side of the synthetic resin base 8 has a stepped punched bend in the longitudinal direction of the synthetic resin base 8, as shown in FIG. 4 or FIG. 8 (b). The horizontal piece 4b is embedded in the synthetic resin base 8, and the lower terminal pin 4a portion is made thicker (separated from and protrudes downward from the terminal pin 3a), and the synthetic resin base 8 of the fixed contact terminal 4 is The upper protruding portion 4c is disposed so as not to face the fixed contact terminal 3 at a position shifted from the fixed contact terminal 3 to the movable contact terminal 7 side.
An integrally extending portion 4d extending laterally from the upper end of the fixed contact terminal 3 faces the upper end of the fixed contact terminal 3, and the fixed contacts 1 and 2 are fixed to these opposing surfaces, respectively. That is, in each switch part A-D, the upwardly protruding portions of the fixed contact terminals 3 and 4 relative to the synthetic resin base 8 do not face each other, and the fixed portions of the fixed contacts 1 and 2 relative to the fixed contact terminals 3 and 4 do not face each other. The fixed contact terminals 3,
Although the fixed contacts 1 and 2 are fixed to the upper end portions of the terminals 4 so as to face each other, it is possible to embed each terminal 3, 4.7 into the synthetic resin base 8 and mold them integrally. Further, as described above, the central position of the synthetic resin base 8 on which the switch parts A to D are arranged on both side edges is the position where the electromagnet block 9 is arranged, and the synthetic resin base 8
Protruding base parts 21 and 22 are integrally provided from the bottom surface of the projecting base part 21, 22, and recesses 23 and 24 are formed on the opposing faces of these protruding base parts 21 and 22, and one end (in case of 2T type) or both ends of the synthetic resin paste 8 is formed. (for 4T type) has a magnetic pole face 14
．． A positioning curved piece 25 is formed to protrude upward and has a width that matches the distance between the positions 14 and 14. Thus, when arranging the electromagnet block 9 on the synthetic resin base 8, the flanges 16 and 1 at both ends of the coil bobbin 11 are
6g or 16a*16a. By fitting the not-illustrated locking tongue pieces projecting downward from above into the four parts 23.24 on the surface facing the projecting base part 21.22, now II1. The coil bobbin 11 of the electromagnet block 9 is positioned and fixed to the resin base 8. Furthermore, at this time, seek 13, 13
The positioning curved piece 25 is fitted between the ends of the magnetic pole faces 14 and 14, and the distance between the magnetic pole faces 14 and 14 is regulated by the width of the positioning curved piece 25. Note that 27 is a case. Effects of the Invention As described above, the present invention comprises a coil bobbin having a coil wound around its outer periphery, an armature that is swingably inserted into the coil bobbin and is driven when the coil is excited, and a main part of the armature. An electromagnetic relay comprising a pair of yokes with their magnetic pole faces facing each other and forming a magnetic circuit, and a card that is driven by an armature to open and close a contact part.A terminal to which a terminal of a coil is connected at one end. A lead terminal having a processing part and a connecting part for external connection at the other end is formed, and the middle part of the lead terminal is supported by the coil bobbin.
Since the middle part of the lead terminal is supported by a coil bobbin, there are no long metal parts like in the past, making it easier to wind the coil and connecting external wires and terminals to the connection part. Even in such a case, unnecessary soldering heat, stress, etc. are applied to the terminal processing portion to which the coil is connected, and this has the effect of preventing disconnection of the coil.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of an embodiment applied to a 2T type polarized electromagnetic relay of the present invention, Figure eIA2 is a perspective view of the same, Figure 3 is a circuit diagram of the same, and Figure 4 is each switch section of the same. The figure (a) is an enlarged plan view, the figure (b) is an enlarged front view, the figure (c) is an I-1 sectional view, and the figure (d) is 5 is an exploded perspective view of an embodiment applied to a 4T type polarized electromagnetic relay of the present invention, FIG. 6 is a perspective view of the same as above, and FIG. 7 is a circuit of the same as above. Figure 8 shows the base block of the same embodiment as above; Figure (a) is an enlarged plan view, Figure (b) is an enlarged front view, and Figure (
e) is a 1'-I' cross-sectional view, and (d) is a n'-n' cross-sectional view. 11 is a coil bobbin, 12 is a coil 5171, 13 is a yoke, 14 is a magnetic pole surface, 15 is an armature, 17 is a lead terminal,
20 is a card. Agent Patent Attorney Ishi 1) Ai Figure 7 2

Claims (1)

[Claims] (1) A coil bobbin with a coil wound around its outer periphery, an armature that is swingably inserted into the coil bobbin and is driven when the coil is energized, and a magnetic pole surface located opposite the main part of the armature. An electromagnetic relay is equipped with a pair of yokes that form a circuit, and a card that is driven by an armature to open and close contact parts.One end has a terminal processing part to which the terminal of the coil is connected, and the other end has a terminal processing part for external connection. 1. An electromagnetic relay comprising: a lead terminal having a connecting portion; and an intermediate portion of the lead terminal supported by the coil bobbin.