JP2009224154A - Electromagnetic relay - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic relay which can perform easily checking of simultaneous contact of one and the other two a-contacts in a manufacturing process. <P>SOLUTION: Two contact members 28, 29 of a movable terminal, which mutually short-circuit at a short circuit portion 30, are supported to a card 27 installed on a movable iron piece 20; one of normally-open movable contact 28A of the movable terminal is carried by one contact member 28 and one of a-contact is constituted of one normally-open movable contact 28A and one normally-open fixed contact 7A; and the other normally-open movable contact 29A of the movable terminal is carried by the other contact member 29 and the other a-contact is constituted of the other normally-open contact 29A and the other normally-open fixed contact 7B. One of signal extraction part 31, a power source 41, one of lamp 42, and a normally-open fixed terminal 6-1 on the one a-contact side are connected in series, and the signal extraction part 31, the power source 41, the other lamp 43, and the normally-open fixed terminal 6-2 of the other a-contact side are connected in series to constitute a detection circuit 44. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electromagnetic relay configured to drive a movable iron piece by excitation or demagnetization of an electromagnetic solenoid mechanism and perform an opening / closing operation of an electric contact opening / closing mechanism having a movable terminal and a fixed terminal. The present invention relates to an electromagnetic relay having a mechanism capable of confirming contact simultaneity.

  An electromagnetic relay that mainly opens and closes a DC load employs a structure in which contacts are arranged in series for the purpose of reducing the contact voltage at the time of opening and closing. For example, as shown in FIG. 28, as an electrical switching contact mechanism of a conventional electromagnetic relay, in a case 100, two a contacts and two b contacts are provided, and the a contact is a normally open fixed contact 101A. And a normally closed fixed terminal 103 having a normally closed fixed contact 103A, and a pair of normally closed movable terminals. The movable section 104 has a contact 104A. The movable segments 102 and 104 are connected to the actuating member 106 by a spring 105 so that the movement of the actuating member 105 opens and closes the a contact and the b contact.

In addition, as an electromagnetic relay that opens and closes the contact of a DC high-voltage load, a movable iron piece that swings around its swinging fulcrum is provided in the main body of the electric appliance by excitation of an electromagnetic solenoid mechanism, and the movable iron piece holds a card. The card has three operation projections, each operation projection is in contact with the corresponding movable contact piece, and no demagnetization is applied to the electromagnetic block of the electromagnetic solenoid mechanism. The movable iron piece is oscillated by the urging force of the leaf spring, and the movable contact of the movable contact piece is connected to the fixed contact side of the normally closed fixed contact piece via the card. Then, when the electromagnetic block is demagnetized, when the electromagnetic block is energized and excited, the iron core attracts and the movable iron piece swings inward of the case, so that the card's operation protrusion is on the movable contact piece. As a result, the movable contact piece swings and the movable contact is connected from the fixed contact side to the fixed contact on the normally closed fixed contact piece side. (See Patent Document 1).
JP 2007-250238 A

  According to the conventional electromagnetic relay shown in FIG. 28, in the electrical contact switching mechanism, when the switching timing of one and the other a contact is different, the switching of the a contact is biased to one side due to the difference in the switching timing, As a result, there is a problem that the consumption of the contact a by the arc is accelerated only on one side of the other contact a and the other contact a and the electrical switching life expected for the product cannot be satisfied.

  Further, it is impossible to check the opening / closing timing of the one and the other a contacts using the normally open fixed terminal 101A which is a connection terminal exposed to the outside. For this reason, although it is a place to check in the manufacturing process, in the contact configuration connected in series in the electric contact switching mechanism of the conventional electromagnetic relay described above, it is necessary to check from the inside of the case 100. There is a problem that it is difficult to perform in the manufacturing process.

  Accordingly, the present invention has been devised to improve such conventional problems, and an object thereof is to provide an electromagnetic relay that can easily check the contact simultaneity of two a contacts in a manufacturing process. Yes.

  In order to achieve the above object, an electromagnetic relay according to the present invention is provided with a movable iron piece that oscillates around its oscillating fulcrum by excitation of an electromagnetic solenoid mechanism in the electric body, and by oscillating the movable iron piece. An electromagnetic relay provided with return means for opening and closing an electric contact opening and closing mechanism having a movable terminal and a fixed terminal, and holding a movable iron piece in a swinging position at the time of demagnetization of the electromagnetic solenoid mechanism. The iron piece holds the contact member via the holding means, and this contact member has two contact pieces that are short-circuited at the short-circuit portion, and one normally open movable contact of the movable terminal is connected to one contact piece. The one normally open movable contact and one normally open fixed contact of the fixed contact constitute one a contact, the other contact piece carries the other normally open movable contact of the movable terminal, The other normally open movable contact and fixed contact Constitute the other a contact point in the other normally opened stationary contact, the short circuit portion, and wherein the protruding form the signal extraction portion for contact simultaneity of adjustment of the one and the other of a contact.

  With this configuration, for example, one of the signal extraction units, a power source, one lamp, and one fixed terminal on the a contact side are connected in series, and one of the signal extraction units, the power source, and the other lamp The detection circuit can be configured by connecting the other a contact side fixed terminal in series, exciting the electromagnetic block, swinging the movable iron piece and turning on one and the other a contact, When the other lamp is turned on, the contact point of contact at one a contact is detected, the contact point of contact at the other a contact is detected, and the timing of the contact point of one a contact and the contact point of the other a contact is detected. It is possible to adjust the contact simultaneity of the one and the other two a contacts by adjusting the electric contact opening / closing mechanism so that the deviation of the timing is within a predetermined time range.

In this way, it is possible to easily check the contact simultaneity of one and the other two a contacts in the manufacturing process, and by arranging a signal extraction portion that does not directly touch the operation mechanism. It is possible to mechanize the adjustment of the contact simultaneity of the two a contacts without accidental sub-operations such as part deformation of the contact part, and to reduce the variation in electrical switching life expected for the product it can.
Further, in the electromagnetic relay according to the present invention described above, the electromagnetic relay according to the present invention is such that the card as the holding means is attached to the movable iron piece, the contact member is held by the card, and the signal extraction portion is the peripheral wall portion of the card. It is characterized by protruding outward.

  With this configuration, for example, one of the signal extraction units, a power source, one lamp, and one fixed terminal on the a contact side are connected in series, and one of the signal extraction units, the power source, and the other lamp The detection circuit can be configured by connecting the other a contact side fixed terminal in series, exciting the electromagnetic block, swinging the movable iron piece and the card, and turning on one and the other a contact. When the one and other lamps are turned on, the contact point of contact at one a contact is detected, the contact point of contact at the other a contact is detected, and the contact point of one a contact and the contact point of the other a contact are detected. It is possible to detect the timing and adjust the electrical contact opening / closing mechanism so that the timing deviation is within a predetermined time range, thereby adjusting the contact simultaneity of the one and the other two a contacts.

  In this way, it is possible to easily check the contact simultaneity of one and the other two a contacts in the manufacturing process, and by arranging a signal extraction unit that does not directly touch the operation mechanism. It is possible to mechanize the adjustment of the contact simultaneity of the two a contacts without accidental sub-operations such as part deformation of the contact part, and to reduce the variation in electrical switching life expected for the product it can.

  Moreover, in the above-described electromagnetic relay according to the present invention, the electromagnetic relay according to the present invention connects one of the signal extraction units, the power source, one lamp, and one fixed terminal on the a contact side in series, The detection circuit is configured by serially connecting a signal extraction unit, a power source, the other lamp, and the other a contact side fixed terminal.

  With this configuration, the electromagnetic block is excited, the movable iron piece and the card are swung, one and the other a contacts are turned on, and one and the other lamps are turned on to detect the contact point of contact at the one a contact. At the same time, the contact point of the other a contact is detected, the timing of the contact point of one a contact and the contact point of the other a contact is detected, and the deviation of this timing is within a predetermined time range. It is possible to adjust the contact simultaneity of one and the other two a contacts by adjusting the electrical contact opening / closing mechanism.

  Further, in the electromagnetic relay according to the present invention described above, the electromagnetic relay according to the present invention is configured such that the movable iron piece includes an iron core facing piece portion disposed opposite to the iron core of the electromagnetic solenoid mechanism and a movable terminal swinging piece portion at a bent portion. Electromagnetic elements that are formed integrally with each other so as to have a substantially L shape and that are provided with a movable iron piece side engaging portion near the bent portion of the iron core facing piece portion, and that hold an electromagnetic solenoid mechanism in the electric body. A solenoid mounting member is provided, a mounting member side engaging portion is provided on the electromagnetic solenoid mounting member, and the movable iron piece side engaging portion is swingably engaged with the mounting member side engaging portion to swing the movable iron piece. And the signal extraction part is made closer to the swing fulcrum side.

  With this configuration, when the signal extraction part is brought close to the swing fulcrum side and a spring plate is used as the return means for the movable iron piece in the signal extraction part, for example, it is affected by the spring force of the spring plate. And accurate data can be retrieved.

  In the electromagnetic relay according to the present invention described above, the electromagnetic relay according to the present invention is characterized in that a connection hole for connecting the signal extraction wiring is provided in the signal extraction wiring portion.

  With this configuration, for example, when connecting a signal extraction unit, a power source, a lamp, and a normally open fixed terminal on one (or the other) a contact side, wiring is performed by passing the wiring through a connection hole. Can be done easily.

  According to the electromagnetic relay according to the present invention, it is possible to easily check the contact simultaneity of one and the other two a contacts in the manufacturing process, and it is possible to take out a signal without directly touching the operation mechanism. By arranging the parts, it is possible to mechanize the adjustment of the contact simultaneity of the two a contacts without accidental sub-operations such as part deformation of the contact part, and the electrical switching life expected of the product Variations can be reduced.

  An embodiment of the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a perspective view depicting the appearance of an electromagnetic relay (two-pole contact type) according to the present invention, FIG. 2 is a perspective view of an exploded state of the electromagnetic relay, and FIG. 3 is a front view depicting the electromagnetic relay through the case. 4 is a rear view drawn through the case of the electromagnetic relay, FIG. 5 is a sectional view taken along line XX in the demagnetized state of the electromagnetic solenoid mechanism of the electromagnetic relay shown in FIG. 3, and FIG. It is YY sectional drawing in the excitation state of the electromagnetic solenoid mechanism of a relay.

  The electromagnetic relay is generally configured such that the base 1 is provided with an electromagnetic solenoid mechanism 40 and an electrical contact opening / closing mechanism 50 and covered with a case 35c. The base 1 and the case 35c constitute an electric body.

  As shown in FIGS. 2, 7, and 8, the base 1 has a planar quadrangular shape, and insulating walls 1a and 1b are erected on one side of the base 1 facing each other. In addition, outer walls 1c and 1d connected to the insulating walls 1a and 1b are erected on the other opposite edge of the base 1, and between the outer walls 1c and 1d at the bottom of the base 1. The inner walls 1e and 1f that are continuous with the insulating walls 1a and 1b are erected, and in the base 1, there are three fixed contact installation chambers 2a, 2b, 2c are formed side by side.

  And as shown in FIG.7 and FIG.8, magnet accommodation part 2a-1,2b-1,2c-1 is provided in fixed contact installation chamber 2a, 2b, 2c. And the magnet accommodating part 2b-1 is equipped with the spring piece part 2b-2 for fixation which hold | suppresses and fixes this permanent magnet 8 in the state which accommodated the permanent magnet 8 in the inside.

  And the magnet insertion hole 4b is provided in the lower part in FIG. 2 of one insulating wall 1a, and the magnet insertion hole 4b is opened to the magnet accommodating part 2b-1. As shown in FIG. 8, fixed terminal press-fitting holes 5a (5b, 5c), which are terminal press-fitting holes, are provided at the bottom of the fixed contact installation chamber 2a (2b, 2c).

  As shown in FIG. 3, the fixed contact installation chamber 2a is provided with a normally open fixed terminal 6-1 as a fixed terminal, and the fixed contact installation chamber 2c is provided with a normally open fixed terminal 6-2 as a fixed terminal. It is arranged. As shown in FIGS. 2 and 9, the normally open fixed terminals 6-1 and 6-2 include contact fixing portions 6a bent in an L shape on the tip side, terminal lead portions 6b, and the terminals. The lead portion 6b has press-fit portions 6c formed on both sides of the base portion, and the normally open fixed terminal 6-1 has a normally open fixed contact 7A as a fixed contact fixed to the contact fixing portion 6a. In the normally open fixed terminal 6-2, a normally open fixed contact 7B as a fixed contact is fixed to the contact fixing portion 6a.

  Then, as shown in FIG. 5, when the press-fit portion 6c of the normally open fixed terminal 6-1 (6-2) is press-fitted into the fixed terminal press-fit holes 5a and 5b, the magnet housing portions 2a-1 and 2c-1 are externally inserted. A normally open fixed terminal 6-1 (6-2) is inserted by inserting a rectangular plate-shaped permanent magnet 8 therein, press-fitting the press-fitting portion 6c into the fixed-terminal press-fitting holes 5a, 5c, and splitting the press-fitting portion 6c. ) And the permanent magnet 8 is formed by the contact fixing portion 6a of the normally open fixing terminal 6-1 (6-2) and the bottom surface of the magnet housing portion 2a-1 (2c-1) as shown in FIG. Is to be clamped and fixed. Thus, the normally open fixed terminal 6-1 is disposed in the fixed contact installation chamber 2a (2c), and the normally open fixed terminal 6-2 is disposed in the fixed contact installation chamber 2c.

  Moreover, as shown in FIG. 6, the normally closed fixed terminal 6-3 which is a fixed terminal is arrange | positioned in the fixed contact installation chamber 2b. As shown in FIGS. 2 and 6, the normally closed fixed terminal 6-3, which is a fixed terminal, includes a contact fixing portion 9a bent in an L shape on the tip side, a terminal lead portion 9b, and the terminal. It has press-fit portions 9c formed on both sides of the base portion of the lead portion 9b, and a normally closed fixed contact 7C is fixed to the contact fixing portion 9a.

  Then, as shown in FIG. 6, the normally closed fixed terminal 6-3 is fixed to the normally closed fixed terminal 6-3 by press-fitting its press-fitting portion 9 c into the fixed terminal press-fitting hole 5 b and splitting the press-fitted portion 9 c. Is arranged in the fixed contact installation chamber 2b. Then, as shown in FIG. 6, a rectangular plate-shaped permanent magnet 8 is inserted into the magnet housing portion 2b-1 from the outside through the magnet insertion hole 4b, and the permanent magnet is fixed by the fixing spring piece 2b-2. 8 is pressed and fixed. In this case, the permanent magnet 8 is located immediately below the normally closed fixed contact 7C.

  Further, as shown in FIG. 8, a terminal press-fitting hole 10 is provided at the bottom of the fixed contact installation chamber 2b, and a normally closed movable terminal 12 is press-fitted into the terminal press-fitting hole 10. That is, as shown in FIGS. 13 and 14, the normally closed movable terminal 12 has an attachment portion 12 a bent in an L shape, a terminal lead portion 12 b, and a press-fit portion 12 c on the terminal body 12 </ b> A. A base end portion of a return spring piece 13 also serving as a contact piece is attached to the attachment portion 12a, and a movable contact attachment hole portion 13A as a contact attachment portion is provided at the distal end portion of the return spring piece 13, A normally closed movable contact 12C is attached to the movable contact attachment hole 13A.

  And as shown in FIG. 6, the normally closed movable terminal 12 is arrange | positioned in the fixed contact installation chamber 2b by press-fitting the press-fitting portion 12c into the terminal press-fitting hole 10. The normally closed movable contact 12C of the normally closed movable terminal 12 is normally in a state of being inserted into the normally closed fixed contact 7C, and these constitute a b contact.

  As shown in FIG. 8, coil terminal press-fitting holes 11a and 11c are provided at the bottoms of the fixed contact installation chambers 2a and 2c. And the coil terminal 15A is arrange | positioned in the fixed contact installation chamber 2a by press-fitting the press-fitting portion 15c of the coil terminal 15A shown in FIG. 2 into the coil terminal press-fitting hole 11a, and the coil terminal 15B is inserted into the coil terminal press-fitting hole 11c. The coil terminal 15B is arranged in the fixed contact installation chamber 2c by press-fitting the press-fitting portion 15c.

  Further, as shown in FIGS. 5 and 6, a substantially inverted L-shaped electromagnetic solenoid mounting member 16 is disposed and fixed on the upper portion of the base 1. The electromagnetic solenoid mounting member 16 is formed by integrally forming a horizontal piece portion 16a and a vertical piece portion 16b each having a substantially rectangular shape. And as shown in FIG. 2, the engagement protrusion 16a-1 which is an attachment member side engaging part is provided in the front part both sides of the horizontal piece part 16a.

  The horizontal piece portion 16a of the electromagnetic solenoid mounting member 16 is provided with an electromagnetic block 17 that mainly includes a coil 17a and generates an electromagnetic force. The electromagnetic block 17 is excited and demagnetized by this electromagnetic block 17. An iron core 19 that can swing the movable iron piece 20 is provided. One end side of the iron core 19 is slidably inserted into a hole 16b-1 formed in the vertical piece 16b of the electromagnetic solenoid mounting member 16. One terminal of the coil 17a is connected to the coil terminal 15A, and the other terminal of the coil 17a is connected to the coil terminal 15B.

  As shown in FIG. 2, the movable iron piece 20 includes a substantially vertical iron core facing piece portion 20a integrally formed in a substantially L shape, and a substantially horizontal movable terminal swing connected to the iron core facing piece portion 20a at a bent portion. A movable piece 20b is provided, and a card mounting portion 20c is provided on the movable terminal swing piece 20b. And as shown in FIG. 2, a pair of engagement level | step-difference part 20a-1 which is a movable iron piece side engaging part is formed in the corner part of the lower end of the iron core opposing piece part 20a.

  Then, as shown in FIG. 5, the movable iron piece 20 is configured such that the engaging step portion 20 a-1 is engaged with the engaging protrusion 16 a-1 of the electromagnetic solenoid mounting member 16, thereby the horizontal piece portion of the electromagnetic solenoid mounting member 16. The movable iron piece 20 has a core-facing piece 20 a facing the iron core 19. And the rocking | fluctuation fulcrum P comprises the engagement level | step-difference part 20a-1 and the engagement protrusion 16a-1.

  The movable iron piece 20 is biased so that one end thereof is biased on the free end 21a side of the movable iron piece pivoting leaf spring 21 attached to the electromagnetic solenoid mounting member 16 and swings to the left in FIG. Has been.

  In FIG. 2, reference numeral 27 denotes a card which is a holding means. As shown in FIG. 10, the card 27 is a contact holding member 45 for carrying a contact having contact pieces 28 and 29 which are short-circuited to each other at the card body 27A portion. Is held by insert molding. That is, as shown in FIG. 11, the contact member 45 is configured such that the bases of the contact pieces 28, 29 are connected to each other by the short-circuit portion 30, and the normally open movable contacts 28 </ b> A, 29A is fixed. In addition, the short-circuit portion 30 is provided with a signal extraction portion 31 that protrudes toward the proximal end side of the contact pieces 28 and 29 and adjusts the contact simultaneity of the two a contacts. These signal extraction portions 31 are provided with connection holes 31a for wiring. The contact pieces 28 and 29 are held by the card body 27 </ b> A at the base and the short-circuit portion 30.

  In addition, as shown in FIG. 12, the signal extraction portion 31 protrudes outward from the back portion of the card body 27A. In this case, as shown in FIG. 5, the signal extraction portion 31 is directly below the swing fulcrum P of the movable iron piece 20 that is the swing fulcrum of the card 27, and is close to the swing fulcrum P.

  Further, as shown in FIG. 10, the card body 22A is provided with a movable iron piece joint 32 projecting in the projecting direction of the contact pieces 28 and 29. The movable iron piece joint portion 32 and the operation projection portion 33 constitute a card lift operation portion R.

  As shown in FIG. 6, the card 27 is attached to the movable iron piece 20 by attaching the movable iron piece joining portion 32 to the card attachment portion 20 c of the movable iron piece 20. Then, the tip of the operation projection 33 of the card 27 is brought into contact with the return spring piece 13 of the b contact and used to push the return spring piece 13, and the contact point of the operation projection 33 is applied to the return force acting point. It is. Accordingly, since the card 27 is lifted via the card lift operation portion R by the return spring function of the return spring piece 13, as shown in FIG. 6, the normally open movable contacts 28A, 29A are normally open fixed terminals 6-1. It faces the 6-2 normally open fixed contacts 7A and 7B, and constitutes one and the other two a contacts.

  As shown in FIG. 1, the case 35 c covers the electromagnetic solenoid mechanism 40 and the electrical contact opening / closing mechanism 50 disposed on the base 1, and then a pair of engaging protrusions provided with the engaging portion 36 on the base 1. The base 1 is assembled by engaging the part 1a-1. In this case, the signal extraction unit 31 is accommodated in the case 35c, dust is prevented, and the risk of electric leakage is avoided.

  As shown in FIGS. 15 and 16, in the demagnetization in which no electricity is applied to the electromagnetic block 17 of the electromagnetic solenoid mechanism 40, the biasing force of the movable iron piece pivoting plate spring 21 and the return spring function of the return spring piece 13 are used. The movable iron piece 20 is urged and oscillated through the card lift operation portion R in the outer direction of the case 35c (leftward in FIG. 16). Therefore, the contact pieces 28 and 29 held by the card 27 are lifted, and at the contact a, the normally open movable contacts 28A and 29A are from the normally open fixed contacts 7A and 7B of the normally open fixed terminals 6-1 and 6-2. is seperated.

  Further, the normally closed movable contact 12C of the normally closed movable terminal 6-3 is pushed up by the return spring function of the return spring piece 13, and comes into contact with the normally closed fixed contact 7C of the normally closed movable terminal 6-3 to contact the b contact. Is closed.

  As shown in FIGS. 17 and 18, when the electromagnetic block 17 is energized by energizing the electromagnetic block 17 from the demagnetized state of the electromagnetic solenoid mechanism 40, the iron core 19 attracts the movable iron piece 20, so that the card 27 swings. With the fulcrum P as a fulcrum, it rotates clockwise in FIG. Therefore, the normally open movable contacts 28A and 29A are brought into contact with the normally open fixed contacts 7A and 7B of the normally open fixed terminals 6-1 and 6-2 through the card 27, and one and the other a contacts are inserted.

  Simultaneously with this loading operation, the operation protrusion 33 of the card 27 moves the normally closed movable terminal 12 in the normally closed movable terminal 12 so that the return spring piece 13 is pushed downward in FIGS. 6 and 18. The contact 12C is separated from the normally closed fixed contact 7C and opens the b contact.

  Next, adjustment of the contact simultaneity of one and the other a contacts will be described with reference to FIGS. 19 and 20.

  As shown in FIG. 19, the adjustment of the contact simultaneity of one and the other a contacts is performed in the manufacturing process before the case 35 c is assembled to the base 1. That is, before attaching the cover 35 to the base 1, one of the signal extraction units 31, the power supply 41, one lamp 42, and the one a contact side normally open fixed terminal 6-1 are connected in series. The detection circuit 44 is configured by serially connecting the signal extraction unit 31, the power source 41, the other lamp 43, and the normally open fixed terminal 6-2 on the other a contact side.

  Then, as shown in FIG. 20, the electromagnetic block 17 is excited, the movable iron piece 20 and the card 27 are swung to turn on one and the other a contacts, and the one and the other lamps 42 and 43 are turned on. The contact point of one a contact is detected, the contact point of the other a contact is detected, the timing of the contact point of one a contact and the contact point of the other a contact is detected. The electric contact opening / closing mechanism 50 is adjusted so that the deviation is within the range of the predetermined time X, and the contact simultaneity of one and the other two a contacts is adjusted.

  That is, adjusting the contact simultaneity of the one and the other a contacts means that the time X is brought close to zero, and the generation of an arc is caused by one a contact (the normally open movable contact 28A and the normally open fixed contact 7A) and the other. Contacts a (the normally open movable contact 28B and the normally open fixed contact 7B) are alternately generated, and the load can be opened and closed with reduced consumption of the normally open movable contacts 28A, 28B and the normally open fixed contacts 7A, 7B. Become.

  In addition, there are two signal extraction units 31, which correspond to the both so that the operator can work easily when the operator is left-handed or right-handed. But you can.

  The above-described electromagnetic relay has a two-pole contact configuration (1a1b series) having an a-contact and a b-contact, and this two-pole contact configuration is shown in a wiring diagram as shown in FIG.

  Next, in the electromagnetic relay, the case of a one-pole contact configuration (1a series) having only a contacts will be described with reference to FIGS. 13 and 22 to 27.

  In the electromagnetic relay having the one-pole contact configuration (1a series), as shown in FIG. 23, in the contact configuration, the normally closed fixed terminal 6-3 in the electromagnetic relay having the two-pole contact configuration (1a1b series) and the normally closed In the state where there is no fixed contact 7C, the return spring piece 13 only functions as a return spring. In addition, since the other configuration is the same as the electromagnetic relay having the above-described two-pole contact configuration (1a1b series), the same reference numerals are given and description thereof is omitted. And also in the electromagnetic relay of this one-pole contact configuration (1a series), the adjustment of the contact simultaneity of the one and the other a contacts is applied.

  As shown in FIGS. 24 and 25, in the demagnetization in which no electricity is supplied to the electromagnetic block 17 of the electromagnetic solenoid mechanism 40, the movable iron piece 20 has the urging force of the movable iron piece pivoting plate spring 21 and the return spring piece 13. By this return spring function, the case 35c is urged in the outer direction (left direction in FIG. 25) to swing. Therefore, the contact pieces 28 and 29 held by the card 27 are lifted, and the normally open movable contacts 28A and 29A are fixed contacts 7A and 6A of the normally open fixed terminals 6-1 and 6-2 at one and the other a contacts. It is away from 7B.

  From the demagnetized state of the electromagnetic solenoid mechanism 40, when the electromagnetic block 17 is energized and excited, the iron core 19 attracts the movable iron piece 20, so that the card 27 swings as shown in FIGS. With the fulcrum P as a fulcrum, it rotates clockwise in FIG. Therefore, the normally open movable contacts 28A and 29A are brought into contact with the normally open fixed contacts 7A and 7B of the normally open fixed terminals 6-1 and 6-2 through the card 27, and one and the other a contacts are inserted.

  According to the above-described embodiment of the present invention, before attaching the cover 35 to the base 1, one of the signal extraction parts 31, the power supply 41, one lamp 42, and one normally open fixed terminal on the a contact side. 6-1 is connected in series, and the signal extraction unit 31, the power source 41, the other lamp 43, and the other a contact side normally open fixed terminal 6-2 are connected in series to form a detection circuit 44. Then, the electromagnetic block 17 is energized, the movable iron piece 20 and the card 27 are swung to turn on one and the other a contacts and the one and the other lamps 42 and 43 are turned on. A time point is detected, a contact point in contact with the other a contact is detected, and a timing between a contact point of one a contact and a contact point of the other a contact is detected. To be inside Adjust the air contact switching mechanism 50, it is possible to perform contact simultaneity of adjustment of the one and the other of the two a-contacts.

  In this way, it is possible to easily check the contact simultaneity of one and the other two a contacts in the manufacturing process, and by arranging a signal extraction unit that does not directly touch the operation mechanism. It becomes possible to mechanize the adjustment of the contact simultaneity of the contact of one and the other a contact without accidental side operation such as part deformation of the contact part, and reduce the variation in electrical switching life expected for the product be able to.

  The present invention makes it possible to easily check the contact simultaneity of one and the other two a contacts within the manufacturing process, and by arranging a signal extraction portion that does not directly touch the operating mechanism. It becomes possible to mechanize the adjustment of the contact simultaneity of the contact of one and the other a contact without accidental side operation such as part deformation of the contact part, and reduce the variation in electrical switching life expected for the product The movable iron piece is driven by the excitation or demagnetization of the electromagnetic solenoid mechanism, and the electrical contact opening / closing mechanism having the movable terminal and the fixed terminal is opened / closed. It can be said.

It is the perspective view which drawn the external appearance of the electromagnetic relay (bipolar contact type) of this invention. It is a perspective view of the decomposition | disassembly state of the same electromagnetic relay. It is the front view which permeate | transmitted and drew the case of the same electromagnetic relay. It is the rear view which permeate | transmitted and drew the case of the same electromagnetic relay. It is XX sectional drawing in the demagnetization state of the electromagnetic solenoid mechanism of the electromagnetic relay shown in FIG. It is YY sectional drawing in the excitation state of the electromagnetic solenoid mechanism of the electromagnetic relay shown in FIG. It is a perspective view of a base. It is a top view of a base It is a perspective view of the electrical contact switching mechanism of an electromagnetic relay (bipolar contact type). It is a perspective view in the state where a card held a contact piece. It is a perspective view of a contact piece. It is the perspective view which looked at the card | curd from the back side. It is a perspective view of the terminal holding the return spring piece. It is a perspective view of the terminal holding the return spring piece which provided the contact in the front-end | tip part. It is an electromagnetic relay (two-pole contact type), Comprising: It is a front view of the electrical contact switching mechanism in the demagnetization state of an electromagnetic solenoid mechanism. It is a side view of the electrical contact switching mechanism in the demagnetized state of the electromagnetic solenoid mechanism. It is a front view of the electrical contact switching mechanism in the excitation state of the electromagnetic solenoid mechanism. It is a side view of the electrical contact switching mechanism in the excitation state of the electromagnetic solenoid mechanism. It is explanatory drawing of the detection circuit for adjusting the contact simultaneity of a contact. It is explanatory drawing of adjustment of the contact simultaneity of a contact. It is a wiring diagram of an electromagnetic relay (two-pole contact type). It is a wiring diagram of an electromagnetic relay (single pole contact type). It is a perspective view of the electrical contact switching mechanism of an electromagnetic relay (single pole contact type). It is an electromagnetic relay (one pole contact type), Comprising: It is a front view of the electrical contact switching mechanism in the demagnetization state of an electromagnetic solenoid mechanism. It is a side view of the electrical contact switching mechanism in the demagnetized state of the electromagnetic solenoid mechanism. It is a front view of the electrical contact switching mechanism in the excitation state of the electromagnetic solenoid mechanism. It is a side view of the electrical contact switching mechanism in the excitation state of the electromagnetic solenoid mechanism. It is structure explanatory drawing of the electrical contact switching mechanism in the conventional electromagnetic relay.

Explanation of symbols

6-1 Normally open fixed terminal (fixed terminal)
6-2 Normally open fixed terminal (fixed terminal)
6-3 Normally closed fixed terminal (fixed terminal)
7A Normally open fixed contact (fixed contact)
7B Normally open fixed contact (fixed contact)
7C normally closed fixed contact (fixed contact)
12 Normally closed movable terminal (movable terminal)
16 Electromagnetic solenoid mounting member 16a-1 engagement protrusion (mounting member side engagement portion)
DESCRIPTION OF SYMBOLS 20 Movable iron piece 20a Iron core opposing piece part 20b Movable terminal rocking | fluctuation piece part 20c Card mounting part 20a-1 Engagement step part (movable iron piece side engaging part)
27 cards (holding means)
28, 29 Contact piece 30 Short-circuit part 31 Signal extraction part 45 Contact member P Swing fulcrum

Claims (5)

A movable iron piece that swings around its swing fulcrum is provided in the main body of the electrical appliance by excitation of the electromagnetic solenoid mechanism, and the electrical contact switching mechanism having a movable terminal and a fixed terminal is opened and closed by swinging the movable iron piece. An electromagnetic relay provided with return means for holding the movable iron piece in a swinging position at the time of demagnetization of the electromagnetic solenoid mechanism in the electric body,
The movable iron piece holds a contact member via a holding means, and the contact member has two contact pieces that are short-circuited by a short-circuit portion, and the one contact piece has one of the movable terminals. A normally open movable contact is carried, and the one normally open movable contact and one normally open fixed contact of the fixed contact constitute one a contact, and the other contact piece has the other normally open of the movable terminal. A movable contact is carried, the other normally open movable contact and the other normally open fixed contact of the fixed contact constitute the other a contact, and the short circuit portion has contact synchronism between the one and the other a contact. An electromagnetic relay characterized in that a signal extraction part for adjusting the height of the projection is formed to protrude.   The card as the holding means is attached to the movable iron piece, and the contact member is held by the card so that the signal extraction portion protrudes outward from the peripheral wall portion of the card. Item 2. The electromagnetic relay according to Item 1.   One of the signal extraction units, a power source, one lamp, and the fixed terminal on the one a contact side are connected in series, and the signal extraction unit, the power source, the other lamp, and the other 3. The electromagnetic relay according to claim 1, wherein a detection circuit is configured by serially connecting the fixed terminal on the a contact side.   The movable iron piece is formed by integrally forming an iron core facing piece portion and a movable terminal oscillating piece portion arranged opposite to the iron core of the electromagnetic solenoid mechanism so as to form a substantially L shape at a bent portion, and facing the iron core. A movable iron piece side engaging portion is provided near the bent portion of the one portion, and an electromagnetic solenoid mounting member for holding the electromagnetic solenoid mechanism is provided in the electric body, and the electromagnetic solenoid mounting member is attached to the electromagnetic solenoid mounting member. A side engagement portion is provided, and the movable iron piece side engagement portion is slidably engaged with the attachment member side engagement portion to constitute the swing fulcrum of the movable iron piece, and the signal extraction portion is The electromagnetic relay according to claim 1, wherein the electromagnetic relay is close to the swing fulcrum side. The electromagnetic relay according to claim 1, wherein a connection hole for connecting a signal extraction wiring is provided in the signal extraction portion.