JP2006012565A - Electromagnetic relay - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic relay not causing the deviation of a fixing position of a fixed terminal caused by the scatter of a cut-and-rise-angle of a fixed terminal spring. <P>SOLUTION: On the electromagnetic relay A comprising a body 1, an electromagnet 2, a contact part 3 having a movable terminal 31 and a fixed terminal 32, and a card 4, the body 1 is provided with a guide 14 extended along a face at the opposite side of the face on which the cut-and-rise 32c of the fixed terminal inserted into a fixed terminal insertion groove 13b is press-fitted. The guide 14 fixes the fixed terminal 32 in a prescribed position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electromagnetic relay that transmits a driving force of an armature to a movable terminal via a card and drives a contact portion to open and close.

  Conventionally, as this type of electromagnetic relay, there is one described in JP-A-10-326549. As shown in FIG. 10, the armature 124 includes a body 101 and an armature 124 rotatably supported by a yoke 123 coupled to one end of an iron core 121 around which a coil 122 is wound. An electromagnet portion 102 attracted and released to the other end portion, and a contact portion having a normally closed fixed contact and a normally open movable contact connected to the fixed pin 132b and the movable pin 131e via the fixed terminal 132 and the movable terminal 131, respectively. 103, a plate-like card 104 that opens and closes the contact portion 103, and an insulating wall 112 that insulates between the electromagnet portion 102 and the contact portion 103, the insulating wall 112 is provided on the body 101. The other piece is provided between the electromagnet portion 102 and the contact portion 103, and the movable pin 131e is disposed on one side provided on the upper portion of the body 101. And Aru.

  This electromagnetic relay B provides an electromagnetic relay that can be miniaturized by increasing the insulation between the electromagnet portion 102 and the contact portion 103 while the movable terminal is disposed on the electromagnet portion side.

However, in the above-described technique, for example, as shown in FIGS. 11 and 12, when the fixed terminal 132 is inserted into the fixed terminal insertion groove 113b, the spring of the fixed terminal 132 is cut up and press-fitted into the 132c to insert the fixed terminal. Although it is inserted into the groove 113b, there may be a deviation in a predetermined position to be fixed, for example, as shown in FIG.
Japanese Patent Laid-Open No. 10-326549

  The present invention has been invented in view of the above-described background art, and an object thereof is to provide an electromagnetic relay in which a fixed position of a fixed terminal does not shift due to variation in the angle of raising and lowering the fixed terminal spring. .

  In order to solve the above problems, the present invention relates to a body having a bottom portion, a fixed terminal insertion groove and a movable terminal insertion groove on the bottom portion, and a yoke coupled to one end portion of an iron core around which a coil is wound. An electromagnet part in which a pivotally supported armature is attracted and released to the other end of the iron core, a fixed terminal having a fixed pin, a fixed terminal spring cut and a normally closed fixed contact, and a movable terminal on the movable pin A movable terminal block having a spring cut-up, a movable terminal having a normally-open movable contact connected via the movable terminal block, a contact portion where the normally-open movable contact is in contact with and away from a normally-closed fixed contact, and the armature And a plate-shaped card that contacts the movable terminal to open and close the contact portion, an insulating wall that protrudes from the bottom of the body and insulates between the electromagnet portion and the contact portion, and the movable terminal includes: The electromagnet part with respect to the fixed terminal The insulating wall formed in a substantially L shape having one piece and another piece protruding from the one piece is provided between the electromagnet part and the contact part, and An electromagnetic relay in which a movable terminal is disposed on one side, and the fixed terminal spring cut and raised and the movable terminal spring cut and raised are press-fitted into the fixed terminal insertion groove and the movable terminal insertion groove and fixed. In the electromagnetic relay that fixes the terminal and the movable terminal, the body includes a guide that is extended along the other surface of the surface into which the fixed terminal spring cut and raised that is press-fitted into the fixed terminal insertion groove is pressed, The guide fixes the fixed terminal at a predetermined position.

  Also, there is a body having a bottom portion, a fixed terminal insertion groove and a movable terminal insertion groove on the bottom portion, and an armature rotatably supported by a yoke coupled to one end portion of an iron core around which a coil is wound. An electromagnet portion attracted and released to the other end of the iron core, a fixed terminal having a fixed pin, a fixed terminal spring cut-up and a normally closed fixed contact, a movable terminal block having a movable terminal spring cut-up on the movable pin, and A movable terminal having a normally-open movable contact connected via a movable terminal block; a contact portion where the normally-open movable contact is in contact with and away from a normally-closed fixed contact; A plate-like card that opens and closes the contact portion; an insulating wall that protrudes from the bottom of the body and insulates between the electromagnet portion and the contact portion; and the movable terminal is on the electromagnet portion side with respect to the fixed terminal A piece and its one piece The insulating wall formed in a substantially L shape with the protruding other piece is provided with the other piece provided between the electromagnet portion and the contact portion, and the movable terminal positioned on one side. An electromagnetic relay disposed to fix the fixed terminal and the movable terminal by press-fitting the fixed terminal spring cut and the movable terminal spring into the fixed terminal insertion groove and the movable terminal insertion groove. In the relay, it is preferable that the fixed terminal insertion groove is provided with a fixed groove corresponding to a front end portion of the fixed terminal press-fitted therein, and the front end portion of the fixed terminal is fitted into the fixed groove.

  According to the electromagnetic relay of the present invention, the guide fixes the fixed terminal at a predetermined position, and the fixed terminal does not shift in position due to the variation in the angle of raising and lowering the fixed terminal spring.

  In addition, since the tip end portion of the fixed terminal is fitted in the fixing groove, the fixing terminal does not shift in position due to variations in the angle of the fixed terminal spring.

  A first embodiment of the present invention will be described below with reference to FIGS. 1 is a schematic perspective view showing the structure of an electromagnetic relay A according to a first embodiment of the present invention, FIG. 2 (a) is a schematic top sectional view of the same, (b) is a schematic front view of the same, FIG. (A) is a side view of the same fixed terminal 32, (b) is a front view, (c) is a top view, FIG. 4 is a partially cutaway top sectional view of the body 1, and FIG. It is explanatory drawing in the case of inserting in 32 fixed terminal insertion groove | channels 13b.

  The body 1 is made of an insulating resin and includes a bottom 11 formed in a substantially rectangular parallelepiped shape, an insulating wall 12 formed in a substantially L shape having a piece 12a and another piece 12b protruding from the piece 12a. The insulating wall 12 is formed integrally with the bottom portion 11 and protrudes from the bottom portion 11. Here, the engagement groove 12c is provided in the other piece 12b of the insulating wall 12, and is cut away in a direction opposite to the protruding direction of the other piece 12b. As shown in FIGS. 4 and 5, a movable terminal insertion groove 13a and a fixed terminal insertion groove 13b are provided. Further, a guide 14 is extended along the fixed terminal insertion groove 13b.

  The electromagnet unit 2 includes an iron core 21, a coil 22, a yoke 23, and an armature 24. The iron core 21 is formed in a rod shape from a magnetic material.

  The coil 22 is wound around a shaft hole 22a of the coil frame, that is, surrounding the iron core 21, by a copper wire coated with an insulator, and the terminal is connected to the coil terminal 22b. The yoke 23 is made of a magnetic material, although not shown, has one piece and the other piece and is formed in a substantially L shape. The one piece is caulked to one end of the iron core 21, and the other piece The pieces are juxtaposed along the axial hole 22a of the coil frame.

  The armature 24 has one piece 24a and another piece 24b made of a magnetic material, is bent into an oblong L-shaped long plate shape, and is pressed by a hinge spring (not shown). Thus, the one piece is supported by the end of the other piece 23b of the yoke 23 so as to be rotatable, and the one piece is sucked and released to the other end 21b of the iron core 21.

  The contact part 3 includes a movable terminal 31 and a fixed terminal 32. The movable terminal 31 is formed in a plate shape by a copper alloy having elasticity, and is made of a silver alloy, and both movable contacts 31a and 31b formed of a normally closed movable contact 31a and a normally open movable contact 31b are fixed to one end. The first bent portion 31c and the second bent portion 31d are bent in two stages, and the other end portion 21b is a movable pin 31e. That is, the normally closed movable contact 31 a and the normally open movable contact 31 b are connected to the movable pin 31 e via the movable terminal 31. In addition, a movable terminal cut-up 31f is provided.

  As shown in FIG. 3, the fixed terminal 32 is formed in a long plate shape using a conductive material of copper or copper alloy, and a normally closed fixed contact 32a made of a silver alloy is opposed to the normally closed movable contact 31a at one end. The other end 21b is a fixing pin 32b, a so-called NC terminal. That is, the normally closed fixed contact 32 a is connected to the fixed pin 32 b through the fixed terminal 32. In addition, a fixed contact spring cut and raised 32c is provided.

  The card 4 is formed in a plate shape with an insulating resin, has one end and the other end, and is locked to the movable terminal 31.

  The case 5 is formed in a bottomed box shape with an insulating resin and is fitted to the body 1.

  As shown in FIG. 1, the movable contacts 31a and 31b connected to the movable pin 31e via the movable terminal 31 are integrated to form a movable terminal block 3a. The movable terminal block 3 a and the fixed terminal 32 are mounted in the projecting direction of the other piece 12 b of the insulating wall 12. The insulating wall 12 has the other piece 12b provided between the electromagnet portion 2 and the contact portion 3. The contact portion 3 is on the opposite side of the one piece 12a with respect to the other piece 12b, and the electromagnet portion 2 is on the one piece 12a side. Each is arranged. Here, since the movable terminal 31 is bent in two steps toward the electromagnet portion 2 side, the movable pin 31e is disposed on the electromagnet portion 2 side with respect to the fixed pin 32b, and the insulating wall 12 is provided. It is located and disposed on the one piece 12a side.

  As shown in FIGS. 4 and 5, the electromagnetic relay A configured as described above is formed along the fixed terminal insertion groove from the other side of the fixed terminal spring cut 32c that is press-fitted into the fixed terminal insertion groove 13b of the body 1. Since the extended guide 14 is provided, the fixed terminal 32 can be fixed to the fixed position by the guide 14.

  Therefore, the fixed terminal 32 does not shift in the fixing position of the body 1 due to the variation in the angle of the cut and raised 32c of the fixed terminal spring.

  An electromagnetic relay A according to the second embodiment will be described with reference to FIGS. 6 is a partially cutaway top sectional view of the body 1 shown in FIG. 7, and FIG. 7 is an explanatory view when the body 1 is inserted into the fixed terminal insertion groove 13b of the fixed terminal 32 shown in FIG. This is the same as that described in the first embodiment except that the shape of the fixed terminal insertion groove 13b of the body 1 is changed.

  The fixed terminal insertion groove 13 b is provided with a fixed groove 15 corresponding to the distal end portion of the fixed terminal 32 that is press-fitted therein, and the distal end portion of the fixed terminal 32 is fitted into the fixed groove 15.

  As shown in FIGS. 6 and 7, the electromagnetic relay A configured in this way fits the distal end portion of the fixed terminal 32 into the fixed groove 15, so that the fixed terminal 32 can be fixed at a fixed position.

  Therefore, the fixed terminal 32 does not shift in the fixing position of the body 1 due to the variation in the angle of the cut and raised 32c of the fixed terminal spring.

  8 and 9, the guide 14 described in the first embodiment and the fixing groove 15 described in the second embodiment are provided in the same fixed terminal insertion groove 13b. This is the same as that described in the first embodiment and the second embodiment, except that the shape of the body 1 is changed. The other constituent elements are the same, and the description thereof is omitted.

  The body 1 is made of an insulating resin and includes a bottom 11 formed in a substantially rectangular parallelepiped shape, an insulating wall 12 formed in a substantially L shape having a piece 12a and another piece 12b protruding from the piece 12a. The insulating wall 12 is formed integrally with the bottom portion 11 and protrudes from the bottom portion 11. Here, the engagement groove 12c is provided in the other piece 12b of the insulating wall 12, and is cut away in a direction opposite to the protruding direction of the other piece 12b. Also, as shown in FIGS. 8 and 9, a movable terminal insertion groove 13a and a fixed terminal insertion groove 13b are provided. Further, a guide 14 is extended along the fixed terminal insertion groove 13b.

  As shown in FIGS. 8 and 9, the fixed terminal insertion groove 13 b is provided with a fixed groove 15 corresponding to the distal end portion of the fixed terminal 32 that is press-fitted therein, and the distal end portion of the fixed terminal 32 is fixed to the fixed groove 15. It is designed to fit in.

  The electromagnetic relay A configured as described above includes a guide 14 that extends along the insertion groove from the other side of the fixed terminal spring cut and raised 32c that is press-fitted into the fixed terminal insertion groove 13b of the body 1, and is further fixed. The terminal insertion groove 13b is provided with a fixing groove 15 corresponding to the distal end portion of the fixed terminal 32 that is press-fitted into the terminal insertion groove 13b, and the distal end portion of the fixed terminal 32 is fitted into the fixing groove 15, so that the terminal insertion groove 13b is further fixed. The terminal 32 can be fixed at a fixed position.

  Therefore, the fixed terminal 32 does not shift in the fixing position of the body 1 due to the variation in the angle of the cut and raised 32c of the fixed terminal spring.

  Although not shown, the movable terminal insertion groove 13a is also fixed to the fixed position by providing the guide described in the first embodiment and the fixed groove described in the second embodiment. Can do.

It is a schematic perspective view which shows the structure of the electromagnetic relay which concerns on the 1st Embodiment of this invention. (A) is a schematic top sectional view of the above, (b) is a schematic front view of the same. (A) is a side view of the fixed terminal same as the above, (b) is a front view, and (c) is a top view. The upper surface sectional view which fractured | ruptured the body same as the above. It is explanatory drawing in the case of inserting in the fixed terminal insertion groove | channel of a fixed terminal same as the above. It is the upper surface section which a part of body of a 2nd embodiment fractured. It is explanatory drawing in the case of inserting in the fixed terminal insertion groove | channel of a fixed terminal same as the above. It is the upper surface section which a part fractured of the body of another embodiment. It is explanatory drawing in the case of inserting a fixed terminal same as the above into a fixed terminal insertion groove. It is a perspective view of the electromagnetic relay of Unexamined-Japanese-Patent No. 10-326549. It is an upper surface sectional view in which a part of the body same as the above was broken. It is explanatory drawing in the case of inserting a fixed terminal same as the above into a fixed terminal insertion groove.

Explanation of symbols

A Electromagnetic relay 1 Body 11 Bottom 12 Insulating wall 12a One piece 12b Other piece 13a Movable terminal insertion groove 13b Fixed terminal insertion groove 14 Guide 15 Fixed groove 2 Electromagnet portion 21 Iron core 21b Other end portion 22 Coil 23 Relay 24 Armature 3 Contact 3a Movable terminal block 31 Movable terminal 31a Normally open movable contact 31e Movable pin 31f Movable terminal spring cut and raised 32 Fixed terminal 32a Normally closed fixed contact 32b Fixed pin 32c Fixed terminal spring cut and raised 4 card

Claims (2)

A body having a bottom portion, a fixed terminal insertion groove and a movable terminal insertion groove on the bottom portion, and an armature rotatably supported by a yoke coupled to one end portion of the iron core around which the coil is wound An electromagnet portion that is attracted and released to the other end, a fixed terminal having a fixed pin, a fixed terminal spring cut and a normally closed fixed contact, a movable terminal block having a movable terminal spring cut and raised on the movable pin, and the movable terminal A movable terminal having a normally-open movable contact connected via a block; a contact portion where the normally-open movable contact contacts and separates from a normally-closed fixed contact; and the contact portion which contacts the armature and the movable terminal respectively. A plate-shaped card that opens and closes, an insulating wall that protrudes from the bottom of the body and insulates between the electromagnet part and the contact part, and the movable terminal is disposed on the electromagnet part side with respect to the fixed terminal Projecting from one piece and its one piece The insulating wall formed in a substantially L shape with the other piece is disposed between the electromagnet portion and the contact portion, and the movable terminal is located on one side. In the electromagnetic relay for fixing the fixed terminal and the movable terminal by press-fitting the fixed terminal spring cut-up and the movable terminal spring cut-up into the fixed terminal insertion groove and the movable terminal insertion groove ,
The body includes a guide that extends along the other surface of the surface into which the fixed terminal spring cut and raised that is press-fitted into the fixed terminal insertion groove, and the guide fixes the fixed terminal at a predetermined position. Electromagnetic relay that is to do. A body having a bottom portion, a fixed terminal insertion groove and a movable terminal insertion groove on the bottom portion, and an armature rotatably supported by a yoke coupled to one end portion of the iron core around which the coil is wound An electromagnet portion that is attracted and released to the other end, a fixed terminal having a fixed pin, a fixed terminal spring cut and a normally closed fixed contact, a movable terminal block having a movable terminal spring cut and raised on the movable pin, and the movable terminal A movable terminal having a normally-open movable contact connected via a block; a contact portion where the normally-open movable contact contacts and separates from a normally-closed fixed contact; and the contact portion which contacts the armature and the movable terminal respectively. A plate-shaped card that opens and closes, an insulating wall that protrudes from the bottom of the body and insulates between the electromagnet part and the contact part, and the movable terminal is disposed on the electromagnet part side with respect to the fixed terminal Projecting from one piece and its one piece The insulating wall formed in a substantially L shape with the other piece is disposed between the electromagnet portion and the contact portion, and the movable terminal is located on one side. In the electromagnetic relay for fixing the fixed terminal and the movable terminal by press-fitting the fixed terminal spring cut-up and the movable terminal spring cut-up into the fixed terminal insertion groove and the movable terminal insertion groove ,
The electromagnetic relay in which the fixed terminal insertion groove is provided with a fixed groove corresponding to a distal end portion of the fixed terminal press-fitted therein, and the distal end portion of the fixed terminal is fitted into the fixed groove.

Images