JPH052354U - Electromagnetic relay - Google Patents

Abstract

(57) [Summary] [Structure] The coil assembly 12 is fitted and fixed to a contact spring assembly formed by implanting contact terminals in an insulator block, and the cover can be covered from above. This coil assembly 12 comprises a coil bobbin 1 having outer flanges 2A and 2B at both ends, a coil winding 4, an iron core 5 and a yoke 6, and an inner flange 3 formed inside the outer flange 2B. In order to hold the leader line 8, a plate-shaped portion that connects the outer flange 2B and the inner flange 3 is provided. The coil winding 4 and the plate-shaped portion 9 are covered with an insulating coating 11 by injection molding. [Effect] It is possible to prevent disconnection of the lead wire 8 of the coil winding 4 and improve the insulation performance.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to an electromagnetic relay, and more particularly to an electromagnetic relay with an improved coil assembly. .

[0002]

[Prior art]

  Conventionally, this type of electromagnetic relay has been used for coil bobbins, coil windings, iron cores, and yokes. And a coil assembly that holds the contact spring drive and presses the coil assembly. By providing a contact spring assembly that is inserted and fixed, and covering it with a cover from above Composed.

[0003]   FIG. 5 is an exploded perspective view of an electromagnetic relay showing a conventional example. As shown in FIG. A conventional electromagnetic relay holds a magnetic pole plate 16, a permanent magnet 17 and a contact spring driver 18. The coil assembly 12, the contact spring assembly 19, and the cover 24 are provided. Of these, the coil assembly 12 includes the first flange 2A having the L-shaped holding portion 7 and the first flange 2A. And a coil bobbin 1 having a second flange 2B in which the coil terminal 10 is planted, The coil winding 4 wound around the center of the coil bobbin 1 and the center of the coil bobbin 1. And a yoke 6 disposed on the lower surface of the coil bobbin 1. Be done. The lead wire 8 of the coil winding 4 is wound around the coil terminal 10 to An insulating material is injection-molded or an insulating tape 15 is attached onto the winding 4. In addition, the coil assembly 12 has a contact spring terminal 22 to which the contact spring 21 is connected. The contact terminal 23 is fitted and coupled to the contact spring assembly 19 in which the insulating block 20 is planted. It The contact spring 21 of the contact spring assembly 19 includes a permanent magnet 17 and two magnetic poles. L-shaped holding portion including the plate 16 and protruding to the flange 2A of the coil bobbin 1 described above. It is driven by a contact spring driver 18 held on 7.

[0004]   FIG. 6 is an enlarged front view of the lead wire portion of the coil assembly shown in FIG. Shown in FIG. As shown here, the state before the insulating material is formed on the coil winding 4 is shown, and the lead wire 8 is Wound around the coil terminal 8 along the coil bobbin 1 in which the coil terminal 10 is implanted There is. After that, the injection molding of the insulating material is wound around the coil winding 4 and the coil terminal 10. It is performed so as to cover the attached leader line 8.

[0005]

[Problems to be solved by the device]

  The above-mentioned conventional electromagnetic relay is installed outside the coil winding when forming the coil assembly. This is done by injection molding the insulating material. In this case, the lead wire of the coil winding Moves in the flow direction of the insulating material and is easily exposed to the outside. Therefore, there is a drawback that the coil winding is disconnected. Also, for such an electromagnetic relay In the coil assembly, the coil lead wire is in direct contact with the terminal holding portion of the coil bobbin. However, the withstand voltage between input and output is reduced, and the insulation performance is significantly reduced. It

[0006]   The purpose of the present invention is to prevent the coil winding forming the coil assembly from breaking. Another object is to provide an electromagnetic relay that improves the insulation performance.

[0007]

[Means for Solving the Problems]

  The electromagnetic relay of the present invention includes a first outer flange having an L-shaped holding portion and a coil. A second outer flange on which terminals are implanted and which is formed on the side opposite to the first outer flange. And a coil bobbin wound around the center of the coil bobbin and A coil winding wound around the coil terminal, and an outer circumference of the coil winding and the coil. An insulating coating that covers the terminal, an iron core that penetrates the center of the coil bobbin, and the iron core. A yoke coupled to one end of the coil bobbin and disposed on the lower surface of the coil bobbin. A coil assembly, and the coil assembly is formed inside the second outer flange. An inner flange and the second outer flange for holding the lead wire of the coil winding And a plate-like portion connecting the inner flanges.

[0008]

【Example】

  Next, an embodiment of the present invention will be described with reference to the drawings.

[0009]   1 (a) and 1 (b) are electromagnetic relays for explaining a first embodiment of the present invention. FIG. 3 is a perspective view of a coil assembly in an electric appliance before injection molding and a perspective view after injection molding. It As shown in FIG. 1A, this embodiment is different from the above-described conventional example of FIG. The coil assembly 12 is different, and the others are the same. Therefore, the coil set The structure of the solid 12 will be described. First, the coil assembly 12 is the first outer flange. 2A, a second outer flange 2B, and a coil bobbin 1 in which an inner flange 3 is formed. , The coil winding 4 wound around the center of the coil bobbin 1, and the inside of the coil bobbin 1. An iron core 5 penetrating the core and a lower surface of the coil bobbin 1 fitted to one end of the iron core 5 And a yoke 6 arranged in In addition, the coil body forming the coil assembly 12 The L-shaped holding portion 7 is formed on the outer flange 2A of the bottle 1 as in the conventional example, and Coil terminals 10 are planted on both sides of the wire 2B. Moreover, the outer flange 2B and the inner A plate-shaped portion 9 is provided between the flange 3 and the flange 3. Therefore, both ends of the coil winding 4 When the lead wire 8 is wound around the coil terminal 10, the lead wire 8 is supported by the plate-shaped portion 9. . Next, as shown in FIG. 1B, the coil winding is used in the injection molding of the insulating material. 4, the outer flange 2B, the inner flange 3, and the upper part of the coil terminal 10 are insulated. Cover with membrane 11. As described above, the outer periphery of the coil assembly 12 is insulated by injection molding. A film 11 is formed, and the insulating coating 11 includes the coil terminal 10 and the plate-shaped portion 9. Since the lead wire 8 supported by the plate-like portion 9 is covered, the lead wire 8 is made of an insulating material by injection molding. It will not move in the direction of flow. That is, the leader line 8 is prevented from being exposed. At the same time, disconnection can be prevented.

[0010]   FIG. 2 is an enlarged front view of the lead wire portion of the coil assembly shown in FIG. Shown in Figure 2 As described above, the plate-shaped portion 9 arranged on the coil bobbin 1 forming the coil assembly is A hollow portion 13 is formed between the outer flange 2B and the inner flange 3. This The withstand voltage 13 improves the withstand voltage.

[0011]   FIG. 3 is a coil assembly in an electromagnetic relay for explaining a second embodiment of the present invention. It is a perspective view before injection molding of a body. As shown in FIG. 3, this embodiment is the same as the first embodiment described above. In addition to the embodiment, the projection 14 is formed on the plate-shaped portion 9. Shape this protrusion 14 By forming the lead wire 8, the lead wire 8 can be drawn to the coil terminal 10. Obey Thus, the leader line 8 can move in the flow direction of the insulating material even if the insulating material is injection-molded. Not only that, it prevents exposure and prevents wire breakage. Inject the insulating coating 11 The state formed on the coil winding 4 by molding is the same as that in FIG. 1 (b) described above. Therefore, it is omitted.

[0012]   FIG. 4 is an enlarged front view of the lead wire portion of the coil assembly shown in FIG. Shown in FIG. As described above, in this case, the projection 14 is formed on the plate-shaped portion 9 and the hollow portion 13 is formed. It is formed similarly to the first embodiment. Therefore, disconnection of the lead wire 8 is prevented, and insulation The pressure can also be improved.

[0013]

[Effect of device]

  As described above, the electromagnetic relay of the present invention is a coil relay for forming a coil assembly. Coil bobbin with coil terminals installed and inner flange and coil winding By forming a plate-shaped part that supports the leader line of Since the leader wire can also be held, there is an effect that the disconnection of the coil winding can be prevented. In addition, the present invention provides a plate-shaped portion on the coil assembly without changing the structure of the contact spring assembly. By increasing the creepage distance, the insulation performance can be improved. There is an effect.

[Brief description of drawings]

FIG. 1 is a perspective view of a coil assembly in an electromagnetic relay before and after injection molding for explaining a first embodiment of the present invention.

FIG. 2 is an enlarged front view of a lead wire portion of the coil assembly shown in FIG.

FIG. 3 is a perspective view of a coil assembly in an electromagnetic relay before injection molding for explaining a second embodiment of the present invention.

FIG. 4 is an enlarged front view of a lead wire portion of the coil assembly shown in FIG.

FIG. 5 is an exploded perspective view of an electromagnetic relay showing a conventional example.

6 is an enlarged front view of a lead wire portion of the coil assembly shown in FIG.

[Explanation of symbols]

1 coil bobbin 2A, 2B outer flange 3 inner flange 4 coil winding 5 iron core 6 York 7 L type holding part 8 leaders 9 Plate-shaped part 10 coil terminals 11 Insulating film 12 coil assembly 13 Cutout 14 Protrusion 16 pole plate 17 permanent magnet 18 contact spring drive 19 Contact spring assembly 20 insulating block 21 contact spring 22 contact spring terminals 23 contact terminals

Claims (3)

[Scope of utility model registration request] 1. A coil bobbin having a first outer flange having an L-shaped holding portion and a second outer flange formed on the side opposite to the first outer flange, in which a coil terminal is implanted, and the coil bobbin. Of a coil winding wound around the center of the coil winding and having both ends wound around the coil terminal, an insulating coating covering the outer periphery of the coil winding and the coil terminal, an iron core penetrating the center of the coil bobbin, and A coil assembly having a yoke coupled to one end and arranged on a lower surface of the coil bobbin, wherein the coil assembly includes an inner flange formed inside the second outer flange, and a coil winding of the coil winding. An electromagnetic relay, characterized in that a plate-like portion that connects the second outer flange and the inner flange is formed to hold a leader line. 2. The electromagnetic relay according to claim 1, wherein the plate-shaped portion of the coil assembly has a protrusion formed on an upper surface thereof. 3. The electromagnetic relay according to claim 1, wherein the plate-shaped portion of the coil assembly has a hollow portion formed on a lower surface thereof.