JP3003425U - Structure of polarized electromagnetic relay - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a structure of a polarized electromagnetic relay in which OT can be easily confirmed during assembly. In a rotary fulcrum type polarized electromagnetic relay including a contact spring block, a polarized electromagnet block and a body block, a notch 34 is formed in a side wall 33 of the body block 3 facing the tip end surface 10a of the armature 10. The coil terminal portion 24 of the pole electromagnet block is arranged at a position lower than the contact surface between the tip end portion 10 a of the armature 10 and the iron core end portion 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a fulcrum type polarized electromagnetic relay for confirming the movement of a movable contact after the movable contact comes into contact with a fixed contact, that is, the movement after the operation (OT: overtravel).

[0002]

[Prior art]

 As shown in FIG. 3, among the side walls of the body block 100 that constitutes the conventional fulcrum type polarized electromagnetic relay, notches 101 are formed on the side walls facing the distal end surfaces of the armatures. A pair of coil terminal coupling pieces 102 are provided so as to project from the bottom surface of the portion 101 (see, for example, JP-A-61-218027).

[0003]

[Problems to be solved by the device]

 Therefore, it is not possible to insert a gap gauge for confirming the OT, which is used as a reference when confirming the contact pressure between the movable contact and the fixed contact, between the armature and the polarized electromagnet block. It had a problem that confirmation was extremely difficult.

The present invention has been made in view of the above problems of the conventional technology, and its object is to provide a structure of a polarized electromagnetic relay that allows easy confirmation of OT during assembly. Is to provide.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a rotary fulcrum type polarized electromagnetic relay comprising a contact spring block, a polarized electromagnet block and a body block, and a cutout portion is formed in a side wall of the body block facing the tip of the armature. And the coil terminal portion of the polarized electromagnet block is disposed at a position lower than the contact surface between the tip end portion of the armature and the iron core end portion.

[0006]

[Action]

 It is possible to insert a predetermined gap gauge into the gap formed between the armature and the polarized electromagnet block through the notch formed in the side wall of the body block. Then, if the coil of the polarized electromagnet block is excited with the gap gauge inserted and the movable contact provided in the contact spring block contacts the fixed contact, at least the thickness of the gap gauge exists in the OT. Is confirmed.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is an exploded perspective view of the polarized electromagnetic relay before the cover is covered, and FIG. 2 is an enlarged perspective view of a main part showing the structure of the polarized electromagnetic relay according to the present invention.

As shown in FIG. 1, the polarized electromagnetic relay includes a contact spring block 1, a polarized electromagnet block 2, a body block 3 and a cover 4, and the contact spring block 1 and the polarized electromagnet block 2 are included. Is press-fitted into the body block 3 and covered with a cover 4.

As shown in FIG. 1, the contact spring block 1 includes a plate-shaped magnetic armature 10 and movable contact spring pieces 11 arranged on both sides of the armature 10 in the longitudinal direction. , A support body 12 made of an insulating resin formed to integrally support the armature 10 and the movable contact spring piece 11.

In the polarized electromagnet block 2, a plate-shaped permanent magnet is held by a magnetic holding member, and a holding member and an electromagnet having a coil wound around an iron core support a pair of supporting ends made of insulating resin. It is integrated by the body 23. The support 23 is provided with a flat plate-shaped coil terminal portion 24 for supplying power to the coil. Further, the tip end portion 10 a of the armature 10 is arranged so as to contact the iron core end portion 21.

The body block 3 is formed of an insulating resin into a box body 30 having an open upper surface, and the contact spring block 1 and the polarized electromagnet block 2 are press-fitted into the box body 30.

Further, a contact piece 32 connected to the movable contact spring piece 11 is provided on the central outer wall surface of each side wall 31 standing upright in the longitudinal direction of the box body 30. Further, as shown in FIG. 2, a concave cutout 34 is formed in a central portion of the side wall 33 standing upright in the width direction of the box body 30 and facing the tip 10a of the armature 10. On the bottom surface 34a of the cutout portion 34, a flat plate-shaped terminal member 35 connected to the coil terminal portion 24 connected to the end of the coil is provided.

Further, ribs are formed at the four inner corners of the box body 30. The rib is provided with a fixed contact 38 which comes into contact with the contact member 16 via a fixed contact plate 37.

On the outer surface of each side wall 31 standing upright in the longitudinal direction of the box body 30, a coil terminal 39 formed integrally with the terminal member 35 and made of a conductive material, and a fixed contact 38 integrally formed of a conductive material and fixed. A common terminal 41 formed of a conductive material integrally with the terminal 40 and the contact piece 32 is exposed and protrudes downward.

The assembly of the polarized electromagnetic relay is performed by first press-fitting the body block 3 into the polar electromagnet block 2 and further press-fitting the contact spring block 1. Then, the contact piece 32 in contact with the fixed portion 14 of the movable contact spring piece 11, the terminal member 35, and the coil terminal portion 24 are welded and fixed by laser, respectively. Then, a gap 7 is formed between the tip end portion 10 a of one of the armatures 10 and the iron core end portion 21 forming the polarized electromagnet block 2.

The operation of the polarized electromagnetic relay configured as described above will be described. As shown in FIG. 2, the gap gauge G is indicated by an arrow in the gap 7 formed between the tip end portion 10a of the armature 10 and the iron core end portion 21 through the notch 34 that is open without any obstacle. Insert as shown. As the gap gauge G, for example, one having a thickness (5/100) mm is used.

A display lamp (not shown) and a power supply (not shown) connected in series are connected in parallel to a make contact formed by the contact member 16 and the fixed contact 38 via a fixed terminal 40 and a common terminal 41. Configure an OT confirmation circuit that can be used and prepare it during the assembly process.

Then, the polarized electromagnetic relay is set in the OT confirmation circuit, and with the gap gauge G inserted in the gap 7, a current is passed between the coil terminals 39 to excite the coil of the electromagnet, and the contact point member 16 If the contact lamp contacts the fixed contact 38 and the indicator lamp lights up, it is confirmed that there is at least an OT having a thickness (5/100) mm of the gap gauge G.

Therefore, from the existence of this OT, it can be inferred that a predetermined contact pressure is generated between the contact member 16 and the fixed contact 38.

[0020]

[Effect of device]

 As described above, according to the present invention, since the gap gauge can be easily inserted into the gap formed between the armature and the polarized electromagnet block, the OT can be easily confirmed during the assembly. I can. In addition, it can contribute to the quality improvement of the polarized electromagnetic relay.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a polarized electromagnetic relay before a cover is attached.

FIG. 2 is an enlarged perspective view of an essential part showing the structure of a polarized electromagnetic relay according to the present invention.

FIG. 3 is a perspective view of a conventional body block.

[Explanation of symbols]

1 ... Contact spring block 1, 2 ... Polarized electromagnet block, 3
... body block, 4 ... cover, 7 ... gap, 10 ... armature, 10a ... armature tip, 11 ... movable contact spring piece,
21 ... Iron core end part, 24 ... Coil terminal part, 33 ... Side wall of body block, 34 ... Notch part.

Claims (1)

[Scope of utility model registration request] 1. A rotary fulcrum type polarized electromagnetic relay comprising a contact spring block, a polarized electromagnet block, and a body block, wherein a notch is formed in a side wall of the body block where a tip of an armature is opposed to the polarized pole. A structure of a polarized electromagnetic relay, wherein a coil terminal portion of an electromagnet block is arranged at a position lower than a contact surface between a tip end portion of the armature and an iron core end portion.