JP2000100304A - Magnetic relay, socket for magnetic relay, adaptor for the magnetic relay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an electrical apparatus from exhibiting unanticipated behavior when a magnetic relay is inserted into or pulled out from a magnetic-relay socket, by making the projecting length of at least one contact side terminal shorter than the projecting lengths of coil side terminals, when a pair of coil side terminals and a pair of contact side terminals project from a bottom surface of a magnetic relay case. SOLUTION: A common-contact side terminal 16, an A-contact side terminal 17, and a B-contact side terminal 18 are provided as contact-side terminals, and the projecting length of the common-contact-side terminal 16 is made shorter by D compared to the projecting length of a coil-side terminal 15. When a magnetic relay 10 is inserted into a magnetic-relay socket 20, the coil side terminal 15, the A-contact side terminal 17 and the B-contact side terminal 18 make electrical contact with a coil side female terminal 22, an A-contact side female terminal 24, and a B-contact side female terminal 25, respectively. When the coil side female terminal 22 is energized, the magnetic relay 10 is energized to actuate contacts 12, 13, and when the magnetic relay 10 is pushed farther in, the common side terminal 16 makes electrical contact with a common side female terminal 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic relay, an electromagnetic relay socket, and an electromagnetic relay adapter used for a control panel, and more particularly, to an electromagnetic relay with a power supply voltage applied to a power supply terminal of the electromagnetic relay socket. An electromagnetic relay having a structure that allows an electromagnetic relay to be inserted into and removed from an electromagnetic relay socket without causing malfunction of an electric device connected to a power terminal of the relay socket, an electromagnetic relay socket, and an electromagnetic relay adapter. About.

[0002]

2. Description of the Related Art Electromagnetic relay units are often used in control panels to operate electrical equipment. FIG. 5 is an external view of a single-pole electromagnetic relay unit. FIG. 6 is an electrical diagram of the inside of the electromagnetic relay. The structure of the electromagnetic relay unit will be described based on these drawings. The electromagnetic relay unit consists of an electromagnetic relay 10 and an electromagnetic relay socket 2.
0. The electromagnetic relay 10 includes an electromagnetic relay case 11, an electromagnetic coil 14, contacts, and terminals.
The contact is a contact that is open when not energized (referred to as an A contact 12) and a contact that is closed when not energized (referred to as a B contact 13)
And The terminal has an electromagnetic coil side terminal 15 and a contact side terminal. The contact side terminal is a common terminal 16, A
It has a contact side terminal 17 and a B contact side terminal 18.
The A contact 12 and the B contact 13 share one terminal (common terminal 16). A common terminal 16 is provided at both ends of the A contact 12.
And the A contact side terminal 17 are electrically connected. A common terminal 16 and an A contact side terminal 18 are electrically connected to both ends of the B contact 13. Coil side terminals 15, 15 are electrically connected to both ends of the electromagnetic coil 14, respectively. The electromagnetic coil 14 and the contacts 12 and 13 are the electromagnetic relay case 1
It is stored in one. As shown in FIG. 5, from the bottom of the electromagnetic relay case, the common contact terminal 16, the A contact side terminal 1
7, the A contact side terminal 18 and the two coil side terminals 15 protrude. Generally, the projecting lengths of the contact terminal and the electromagnetic coil terminal from the case bottom surface are all equal.
In general, one electromagnetic relay 10 contains a plurality of contacts. Here, an electromagnetic relay in which the protruding lengths of all the terminals from the case bottom surface are equal is called a standard electromagnetic relay.

The electromagnetic relay socket 20 includes an electromagnetic relay socket case 21, terminals, electric terminals 40, and internal wiring (not shown). The terminal has a contact-side female terminal and a coil-side female terminal 22 that are fitted to the contact-side terminal and the coil-side terminal 15 of the electromagnetic relay 10, respectively. The contact side female terminal is a common female terminal 23, the A contact side female terminal 2
4 and a B-contact side female terminal 25. The electric terminal 40 is electrically connected to the coil side terminal 22, the common female terminal 23, the A contact side female terminal 24, and the B contact side female terminal 25, respectively. The electric terminals 40 of the electromagnetic relay socket 20 are fixedly wired in the control panel.
In a general electromagnetic relay socket, the depth from the upper surface of the electromagnetic relay socket case 21 to the terminal contact positions of the coil side female terminal 22, the common female terminal 23, the A contact side female terminal 24 and the B contact side female terminal 25. Are all equal. Here, the electromagnetic relay socket having the same depth from the upper surface of the electromagnetic relay socket case 21 to the terminal contact positions of all the female terminals is referred to as a standard electromagnetic relay socket.

Next, a method of using the electromagnetic relay 10 and the electromagnetic relay socket 20 will be described. Electromagnetic relay 10
The terminal protruding from the bottom of the
When the terminal is inserted into the 0 female terminal, the terminal and the female terminal are brought into contact with each other, and a current can be supplied. When the terminals are inserted until the bottom surface of the electromagnetic relay case 11 and the top surface of the electromagnetic relay socket case 21 are in contact with each other, the setting of the electromagnetic relay is completed. If the electromagnetic relay 10 is inserted into or removed from the electromagnetic relay socket 20 while the bottom surface of the electromagnetic relay case 11 and the upper surface of the electromagnetic relay socket case 21 are tilted, excessive bending may be applied to the terminals. Force is generated, and the terminal is bent or broken. Therefore, the bottom surface of the electromagnetic relay case 11 and the electromagnetic relay socket case 2
It is desirable to connect and disconnect the terminals while maintaining the parallelism with the upper surface of the electromagnetic relay set 1 in order to protect the terminals of the electromagnetic relay set.

[0005] By the way, at the site where the control panel is used, there is often a case where it is desired to stop supplying electricity to the electric equipment for maintenance of the control panel and the electric equipment. In such a case,
In principle, the supply of electricity to the electromagnetic relay socket is stopped. However, the supply of power to unrelated electrical equipment is also stopped, which may cause inconvenience. Therefore, as a simple method, the electromagnetic relay 10 corresponding to the electric device is removed from the electromagnetic relay socket 20. With this configuration, it is possible to easily stop only the supply of electricity to a specific electric device.

However, the electromagnetic relay 10 is disconnected from the electromagnetic relay socket 20 or the electromagnetic relay socket 2 while the power supply to the electromagnetic relay socket 20 is maintained.
When inserted into 0, the following problems may occur. For example, when the electric motor is connected to the B contact 13 and the coil-side female terminal 22 is energized,
A case where 0 is removed from the electromagnetic relay socket 20 will be described as an example. Since the electromagnetic coil 14 is energized, the B contact 13 is opened and the electric motor is stopped. In the process of unplugging the electromagnetic relay 10 from the electromagnetic relay socket 20, if the electrical contact between the coil side terminal 15 and the coil side female terminal is released, the energization to the electromagnetic coil 14 is stopped. When the energization of the electromagnetic coil stops, the B contact 13 closes and the electric motor rotates. Further, when the electromagnetic relay 10 is pulled out, the electrical contact between the contact side terminal and the contact side female terminal is released. Then, the B-contact female terminal 18 and the common female terminal 16 of the electromagnetic relay socket are opened, and the electric motor stops. As described above, in the process of pulling out the electromagnetic relay 10 from the electromagnetic relay socket 20, the electric motor is temporarily rotated from a stopped state, and then stopped immediately.

Further, for example, a case where the electromagnetic relay 10 is inserted into the electromagnetic relay socket 20 while the electric motor is connected to the B contact and the coil-side female terminal 22 is energized will be described as an example. Since the electromagnetic relay 10 is disengaged and the B-contact female terminal 24 and the common female terminal 23 of the electromagnetic relay socket 20 are open, the electric motor is stopped. The electromagnetic coil 10 is connected to the electromagnetic coil
In the process of inserting into the contact, if there is electrical contact on the contact side contact,
Since the B contact 12 is closed, the electric motor rotates.
Further, when the electromagnetic relay 10 is inserted, the electromagnetic coil 14
Is energized, the B contact 13 is open, and the electric motor stops. As described above, in the process of inserting the electromagnetic relay 10 into the electromagnetic relay socket 20, the electric motor connected to the B contact 13 temporarily rotates from the stopped state, and then stops immediately.

[0008]

SUMMARY OF THE INVENTION On-site electromagnetic relay 10
In order to prevent this problem, the contact side terminal side of the electromagnetic relay 10 is slightly lifted, and the electromagnetic relay is removed from the electromagnetic relay socket. In this case,
Since the electrical connection of the contact side terminal is shifted earlier than the electrical connection of the electromagnetic coil side terminal, the electric motor does not temporarily rotate. When the electromagnetic relay 10 is inserted, in order to prevent this problem, the terminal of the electromagnetic coil 10 on the electromagnetic coil side is slightly lowered, and the electromagnetic relay is inserted into the electromagnetic relay socket. In this case, since the electromagnetic coil side terminal is electrically connected before the contact side terminal,
The electric motor does not rotate temporarily. However, this causes a problem that an excessive force is applied to the terminals of the electromagnetic relay, which is not preferable. In addition, there is also a problem that the on-site work requires skill.

The present invention has been devised in view of the above-described problems.
It is an object of the present invention to provide an electromagnetic relay and an electromagnetic relay socket in which an electric device does not operate unexpectedly when inserted into a zero or when it is pulled out from the electromagnetic relay socket 20. Another object of the present invention is to provide an intermediate relay for an electromagnetic relay that prevents an electrical device from unexpectedly operating when the electromagnetic relay is inserted into or pulled out of the electromagnetic relay socket.

[0010]

To achieve the above object, an electromagnetic relay according to the present invention is an electromagnetic relay in which an electromagnetic coil and a contact opened and closed by the electromagnetic coil are built in an electromagnetic relay case. A pair of coil-side terminals electrically connected to and protruding from the bottom surface of the electromagnetic relay case; and a pair of contact-side terminals electrically connected to the contacts and protruding from the bottom surface of the electromagnetic relay case, and protruding at least one contact-side terminal. The length is shorter than the protruding length of the coil side terminal. According to the configuration of the present invention, for example, when the electromagnetic relay of the present invention is used in combination with a standard electromagnetic relay socket, the terminal contact position of the contact side female terminal of the standard electromagnetic relay socket from the tip of at least one contact side terminal Is longer than the distance from the tip of the coil side terminal to the terminal contact position of the coil side female terminal of the standard electromagnetic relay socket.

In order to achieve the above object, an electromagnetic relay socket according to the present invention is an electromagnetic relay socket which is fitted at a lower portion of an electromagnetic relay and an upper portion thereof, wherein the socket is electrically connected to an electromagnetic coil and has a bottom surface. A pair of coil-side female terminals fitted to a pair of coil-side terminals protruding from a pair of contact-side female terminals electrically connected to contacts and fitted to a pair of contact-side terminals protruding from the bottom surface of the electromagnetic relay case. The depth from the upper surface of the electromagnetic relay socket to the terminal contact position of at least one contact-side female terminal is greater than the depth from the upper surface of the electromagnetic relay socket to the terminal contact position of the coil-side female terminal. According to the configuration of the present invention, for example, when the electromagnetic relay socket of the present invention is used in combination with a standard electromagnetic relay, the contact side female terminal of the electromagnetic relay socket is connected from the tip of at least one contact side terminal of the standard electromagnetic relay. The distance to the terminal contact position is longer than the distance from the tip of the coil side terminal of the standard electromagnetic relay to the terminal contact position of the coil side female terminal of the electromagnetic relay socket.

In order to achieve the above object, an electromagnetic relay adapter according to the present invention is an electromagnetic relay adapter positioned between an electromagnetic relay and an electromagnetic relay socket for connecting the electromagnetic relay to the electromagnetic relay socket. So,
An intermediate female terminal provided on the top surface of the electromagnetic relay adapter case so as to be fitted to the terminal of the electromagnetic relay, and a pair of protruding from the bottom surface of the electromagnetic relay adapter case so as to be fitted to the coil-side female terminal of the electromagnetic relay socket. And a pair of contact-side intermediate terminals protruding from the bottom surface of the electromagnetic relay adapter case so as to be fitted to the contact-side female terminals of the electromagnetic relay socket. The protrusion length is shorter than the protrusion length of the coil-side intermediate terminal. According to the configuration of the present invention, for example, when the electromagnetic relay adapter of the present invention is used in combination with a standard electromagnetic relay socket, the female terminal of the standard electromagnetic relay socket is inserted from the tip of at least one contact side terminal of the electromagnetic relay adapter. The distance of the terminal to the terminal contact position is longer than the distance from the tip of the coil side terminal of the electromagnetic relay adapter to the terminal contact position of the coil side female terminal of the standard electromagnetic relay socket.

According to another aspect of the present invention, there is provided an electromagnetic relay adapter for connecting an electromagnetic relay to an electromagnetic relay socket located between the electromagnetic relay and the electromagnetic relay socket. A coil-side intermediate female terminal provided on the upper surface of the electromagnetic relay adapter so as to be fitted to a pair of coil-side terminals protruding from the electromagnetic relay case bottom surface, and a pair of contact-side terminals protruding from the electromagnetic relay case bottom surface A contact-side intermediate female terminal provided on the upper surface of the electromagnetic relay adapter so as to fit into the electromagnetic relay adapter case, and an intermediate terminal protruding from the lower surface of the electromagnetic relay adapter case so as to fit into the female terminal of the electromagnetic relay socket. The depth from the top of the relay intermediate adapter to the terminal contact position of at least one intermediate female terminal on the contact side is the intermediate adapter for the electromagnetic relay. Deeper than the depth to the terminal contact position of the coil-side intermediate female terminal from data top. With the configuration of the present invention, for example, when the electromagnetic relay adapter of the present invention is used in combination with a standard electromagnetic relay, the terminal contact of the female terminal of the electromagnetic relay adapter from the tip of at least one contact side terminal of the standard electromagnetic relay. The distance to the position is longer than the distance from the tip of the coil side terminal of the standard electromagnetic relay to the terminal contact position of the coil side female terminal of the electromagnetic relay adapter. Therefore, if the electromagnetic relay of the present invention, the electromagnetic relay socket or the electromagnetic relay adapter is used, when the electromagnetic relay is inserted into the electromagnetic relay socket or when the electromagnetic relay is pulled out of the electromagnetic relay socket, the electromagnetic relay is electrically connected to the electromagnetic relay socket. In this way, it is possible to prevent the operated electric device from unexpectedly operating.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In each of the drawings, common portions are denoted by the same reference numerals, and redundant description will be omitted. A first embodiment will be described. FIG. 1 is an external view (partially sectional view) of an electromagnetic relay unit including one electromagnetic relay according to an embodiment of the present invention. The electromagnetic relay 10 includes an electromagnetic relay case 11, a contact, an electromagnetic coil 14, and a coil-side terminal 1.
5 and a contact side terminal. Two coil side terminals and three contact side terminals protrude from the lower surface of the electromagnetic relay case 11. The contact side terminals include a common contact side terminal 16, an A contact side terminal 17, and a B contact side terminal 18. The protrusion length of the common contact side terminal 16 is shorter than the protrusion length of the coil side terminal 15 by D. The A contact side terminal 17 and the B contact
The protrusion length of the contact side terminal 18 is equal to the protrusion length of the coil side terminal 15. The operation when the electromagnetic relay of this embodiment and the standard electromagnetic relay socket 20 are used in combination will be described. When the electromagnetic relay 10 is inserted into the electromagnetic relay socket 20, first, the two coil-side terminals 1
5, the A contact side terminal 17 and the B contact side terminal 18 make electrical contact with the two coil side female terminals 22, the A contact side female terminal 24 and the B contact side female terminal 25, respectively. At this time, when the coil-side female terminal 22 of the electromagnetic relay socket 20 is energized, the electromagnetic coil 14 of the electromagnetic relay 10 is energized, and the contacts 12 and 13 operate. When the electromagnetic relay 10 is further pushed into the electromagnetic relay socket 20, the common terminal 16 and the common female terminal 23 make electrical contact, and the insertion of the electromagnetic relay 10 is completed.

Next, a second embodiment will be described. FIG. 2 is an external view (partially sectional view) of an electromagnetic relay unit including one electromagnetic relay socket according to an embodiment of the present invention. The electromagnetic relay socket 20 includes an electromagnetic relay socket case 21, two coil-side female terminals 22, three contact-side female terminals, wiring (not shown), and electric terminals (40). The contact side female terminal includes a common contact side female terminal 23, an A contact side female terminal 24, and a B contact side female terminal 25. From the top of the electromagnetic relay socket case 21 to the common contact side female terminal 2
The depth to the terminal contact position 3 is D deeper than the terminal contact position of the coil-side female terminal 22 from the upper surface of the electromagnetic relay socket case 21. The operation when the standard electromagnetic relay 10 and the electromagnetic relay socket 20 of this embodiment are used in combination will be described. The operation of the present embodiment will be described. When the electromagnetic relay 10 is inserted into the electromagnetic relay socket 20, first, two coil terminals 15, an A contact terminal 17, and a B contact terminal 18 are respectively connected to the two coil female terminals 22 and the A contact side. An electrical contact is made between the female terminal 24 and the B-contact side female terminal 25. At this time, if the electromagnetic coil side female terminal 22 of the electromagnetic relay socket 20 is energized, the electromagnetic coil 14 of the electromagnetic relay 10 is energized and the contact 1
2, 13 are activated. Further, when the electromagnetic relay 10 is pushed into the electromagnetic relay socket 20, the common terminal 16 and the common female terminal 22 make electrical contact, and the insertion of the electromagnetic relay 10 is completed.

A third embodiment will be described. FIG. 3 is an external view (partially sectional view) of an electromagnetic relay unit including one electromagnetic relay adapter according to the embodiment of the present invention. The electromagnetic relay adapter 30 includes an adapter case 31, two coil side intermediate terminals 32, three contact side intermediate terminals, two coil side intermediate female terminals 36, and three contact side intermediate female terminals 3.
7, 38, and 39. Two coil-side intermediate female terminals 36 and three contact-side intermediate female terminals 37, 38, 39
Is provided on the upper surface of the adapter case. Two coil side intermediate terminals 32 and three contact side intermediate terminals 33, 34, 3
5 project from the lower surface of the adapter case 31.
The contact side intermediate terminal includes a common contact side intermediate terminal 33, an A contact side intermediate terminal 34, and a B contact side intermediate terminal 35. The projecting length of the common contact side intermediate terminal 33 is shorter than the projecting length of the coil side intermediate terminal 32 by D. The protruding length of the A contact side intermediate terminal 34 and the B contact side intermediate terminal 35 is equal to the protruding length of the electromagnetic coil side intermediate terminal 32. Also, from the upper surface of the adapter case 31, two coil-side intermediate female terminals 36 and three contact-side female contact terminals 37,
The distances to the terminal contact positions 38 and 39 are equal. The operation when the electromagnetic relay adapter 30, the standard electromagnetic relay 10, and the standard electromagnetic relay socket 20 of the present embodiment are used in combination will be described. The electromagnetic relay 10 is inserted in the electromagnetic relay adapter 30 in advance. When the electromagnetic relay adapter 30 in which the electromagnetic relay 10 is inserted is inserted into the electromagnetic relay socket 20, first, two coil side intermediate terminals 32, an A contact side intermediate terminal 34, and a B contact side intermediate terminal 35
Make electrical contact with the two coil-side female terminals 22, the A-contact-side female terminals 24, and the B-contact-side female terminals 25, respectively. At this time, if the coil-side female terminal 22 of the electromagnetic relay socket 20 is energized, the electromagnetic coil 14 of the electromagnetic relay 10 is energized and the contact is activated. When the electromagnetic relay adapter 30 is further pushed into the electromagnetic relay socket 20, the common intermediate terminal 33 and the common female terminal 23 make electrical contact, and the insertion of the electromagnetic relay 10 is completed.

A fourth embodiment will be described. FIG. 4 is an external view (partially sectional view) of an electromagnetic relay socket including one electromagnetic relay adapter according to the embodiment of the present invention. The electromagnetic relay intermediate adapter 30 includes an adapter case 31, two coil-side intermediate terminals 32, three contact-side intermediate terminals, two coil-side intermediate female terminals 36, and three contact-side intermediate female terminals. The contact side intermediate female terminal includes a common contact side intermediate female terminal 37, an A contact side intermediate female terminal 38, and a B contact side intermediate female terminal 39. The depth from the upper surface of the adapter case 30 to the terminal contact position of the common side female intermediate terminal 37 is D deeper than the depth from the upper surface of the adapter case 30 to the terminal contact position of the electromagnetic coil side intermediate female terminal 36. The coil side intermediate terminal 32 and the A contact side intermediate terminal 3
The projecting length of the intermediate terminal 4 and the B contact side intermediate terminal 35 is equal to the projecting length of the electromagnetic coil side intermediate terminal 32. The depth from the upper surface of the adapter case 31 to the terminal contact position of the A-contact intermediate female terminal 38 and the B-contact intermediate female terminal 39 is equal to the distance from the upper surface of the adapter case 31 to the terminal contact position of the coil-side intermediate female terminal 36. The operation when the electromagnetic relay adapter 30, the standard electromagnetic relay 10, and the standard electromagnetic relay socket 20 of the present embodiment are used in combination will be described. The electromagnetic relay adapter 30 is inserted into the electromagnetic relay socket 20 in advance. When the electromagnetic relay 10 is inserted into the intermediate adapter 30 for an electromagnetic relay, first, the two coil side terminals 15, the A contact side terminal 17, and the B contact side terminal 18 are connected to the two coil side intermediate female terminals 36 and A, respectively.
The contact side intermediate female terminal 38 and the B contact side intermediate female terminal 39 are electrically contacted. At this time, the electromagnetic relay socket 20
When the coil-side female terminal 22 is energized, the electromagnetic coil 14 of the electromagnetic relay 10 is energized, and the contact operates. When the electromagnetic relay 10 is further pushed into the electromagnetic relay adapter 30, the intermediate common terminal 16 and the common female intermediate terminal 37
Make electrical contact, and the insertion of the electromagnetic relay 10 is completed.

According to the electromagnetic relay 10 or the electromagnetic relay socket 20 of the present embodiment, the electromagnetic relay 10 is separated from the electromagnetic relay socket 20 while maintaining the lower surface of the electromagnetic relay 10 and the upper surface of the electromagnetic relay socket 20 parallel. If it is pulled out, the electrical connection of the coil side terminal occurs first and then the coil side terminal, so that the electrical equipment connected to the electromagnetic relay socket 20 does not unexpectedly operate. Also, if the electromagnetic relay 10 is inserted into the electromagnetic relay socket 20 while maintaining the lower surface of the electromagnetic relay 10 and the upper surface of the electromagnetic relay socket 20 in parallel, first, the electrical connection of the coil side terminals occurs. Thus, the electrical connection of the relay-side terminal occurs, so that the electrical equipment connected to the electromagnetic relay socket 20 does not unexpectedly operate. Further, according to the electromagnetic relay adapter of the present embodiment, the electromagnetic relay adapter 30 of the present embodiment is used between the general electromagnetic relay 10 and the general electromagnetic relay socket 20, and the lower surface of the electromagnetic relay 10 is If the electromagnetic relay 10 is pulled out from the electromagnetic relay socket 20 while keeping the upper surface of the electromagnetic relay socket 20 parallel, the electrical disconnection of the relay terminal first occurs, and then the electrical connection of the coil side terminal. Because cutting occurs,
The electric device connected to the electromagnetic relay socket 20 is not unexpectedly operated. Furthermore, the electromagnetic relay adapter 30 of the present embodiment is used between the general electromagnetic relay 10 and the general electromagnetic relay socket 20.
If the electromagnetic relay 10 is inserted into the electromagnetic relay socket 20 while maintaining the lower surface of the electromagnetic relay 10 and the upper surface of the electromagnetic relay socket 20 in parallel, first, after the electrical connection of the coil side terminals occurs, Since the electrical connection of the relay-side terminals occurs, the electrical equipment connected to the electromagnetic relay socket 20 does not unexpectedly operate.

The present invention is not limited to the embodiments described above, and various changes can be made without departing from the gist of the invention. For example, an electromagnetic relay having a plurality of built-in contacts and an electromagnetic relay socket can be used. The D dimension is not particularly limited as long as it is necessary to perform the above-described operation.
m to 3 mm are preferred. Further, in the present embodiment, the protruding length of the common side terminal or the common side female terminal is shortened, but the A contact side terminal and the B contact side terminal may be shortened instead. Further, in the present embodiment, the end contact position of the common side female terminal is deepened from the upper surface of the electromagnetic relay socket or the intermediate adapter for the electromagnetic relay. However, instead of this, the terminal of the A contact side female terminal and the terminal of the B contact side female terminal are replaced. The contact position may be deep.

[0020]

As described above, according to the configuration of the electromagnetic relay of the present invention, when the electromagnetic relay of the present invention is used in combination with a standard electromagnetic relay socket, for example, when the electromagnetic relay is inserted into the standard electromagnetic relay socket. After the electrical contact between the coil side terminal and the coil side female terminal has occurred, the electrical contact between at least one contact side terminal and the contact side female terminal occurs. When the electromagnetic relay is pulled out from the standard electromagnetic relay socket, at least the coil side terminal and the coil side female terminal are electrically disconnected after the contact side terminal and the contact side female terminal are electrically disconnected. Further, according to the configuration of the electromagnetic relay socket of the present invention, for example, when the electromagnetic relay socket of the present invention is used in combination with a standard electromagnetic relay, when inserting the standard electromagnetic relay into the electromagnetic relay socket, the coil side terminal and the coil After the electrical contact with the side female terminal occurs, the electrical contact between at least one contact side terminal and the contact side female terminal occurs. When the standard electromagnetic relay is pulled out of the electromagnetic relay socket, at least the coil side terminal and the coil side female terminal are electrically disconnected after the contact side terminal and the contact side female terminal are electrically disconnected. According to the configuration of the electromagnetic relay adapter of the present invention, for example, when the electromagnetic relay adapter of the present invention is used in combination with a standard electromagnetic relay socket, the electromagnetic relay adapter of the present invention is inserted into the standard electromagnetic relay socket. Then, after the electrical contact between the coil side terminal and the coil side female terminal occurs, the electrical contact between at least one contact side terminal and the contact side female terminal occurs. Also, when the electromagnetic relay adapter is pulled out of the standard electromagnetic relay socket, at least the coil side terminal and the coil side female terminal are electrically disconnected after the contact side terminal and the contact side female terminal are electrically disconnected. Still further, according to the configuration of the electromagnetic relay adapter of the present invention, for example, when the electromagnetic relay adapter of the present invention is used in combination with a standard electromagnetic relay, when the standard electromagnetic relay is inserted into the electromagnetic relay adapter of the present invention, After the electrical contact between the coil side terminal and the coil side female terminal occurs, the electrical contact between at least one contact side terminal and the contact side female terminal occurs. When the standard electromagnetic relay is pulled out from the electromagnetic relay adapter of the present invention, after the electrical disconnection of the contact side terminal and the contact side female terminal occurs,
Electrical disconnection of at least the coil side terminal and the coil side female terminal occurs. Therefore, if the electromagnetic relay of the present invention, the electromagnetic relay socket and the electromagnetic relay adapter are used, when the electromagnetic relay is inserted into the electromagnetic relay socket or pulled out from the electromagnetic relay socket, the electromagnetic relay is electrically connected to the electromagnetic relay socket. In this way, it is possible to prevent the operated electric device from unexpectedly operating. The effects of the present invention have been described in the case of using the electromagnetic relay of the present invention, the electromagnetic relay socket and the electromagnetic relay adapter in combination with the standard electromagnetic relay or the standard electromagnetic relay socket, but the present invention is not limited to the above combination. . For example, the combination of the electromagnetic relay of the present invention and the electromagnetic relay socket of the present invention, the combination of the electromagnetic relay of the present invention and the electromagnetic relay adapter of the present invention, the electromagnetic relay adapter of the present invention and the electromagnetic relay socket of the present invention. The same effect can be obtained with the combination.

[Brief description of the drawings]

FIG. 1 is a structural diagram of an electromagnetic relay unit according to a first embodiment of the present invention.

FIG. 2 is a structural diagram of an electromagnetic relay unit according to a second embodiment of the present invention.

FIG. 3 is a structural diagram of an electromagnetic relay unit according to a third embodiment of the present invention.

FIG. 4 is a structural diagram of an electromagnetic relay unit according to a fourth embodiment of the present invention.

FIG. 5 is an external view of a conventional electromagnetic relay unit.

FIG. 6 is an electromagnetic relay wiring system diagram.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 electromagnetic relay 11 electromagnetic relay case 12 A contact 13 B contact 14 electromagnetic coil 15 coil side terminal 16 common side terminal 17 A contact side terminal 18 B contact side terminal 20 electromagnetic relay socket 21 socket case 22 electromagnetic coil side female terminal 23 common Side female terminal 24 A contact side female terminal 25 B contact side female terminal 30 Intermediate adapter for electromagnetic relay 31 Adapter case 32 Electromagnetic coil side intermediate terminal 33 Common side intermediate terminal 34 A contact side intermediate terminal 35 B contact side intermediate terminal 36 Electromagnetic coil Side intermediate female terminal 37 Common female intermediate terminal 38 A contact side intermediate female terminal 39 B contact side intermediate female terminal 40 Wiring terminal

Claims (4)

[Claims] 1. An electromagnetic relay having an electromagnetic coil and contacts opened and closed by the electromagnetic coil incorporated in an electromagnetic relay case, comprising: a pair of coil-side terminals electrically connected to the electromagnetic coil and protruding from a bottom surface of the electromagnetic relay case; And a pair of contact-side terminals electrically connected to the contacts and protruding from the bottom surface of the electromagnetic relay case, wherein the protrusion length of at least one contact-side terminal is shorter than the protrusion length of the coil-side terminal. . 2. An electromagnetic relay socket fitted at a lower portion and an upper portion of an electromagnetic relay, said pair of coils being electrically connected to an electromagnetic coil and fitted to a pair of coil side terminals protruding from a bottom surface of the electromagnetic relay case. A side female terminal, and a pair of contact side female terminals that are electrically connected to the contacts and are fitted to a pair of contact side terminals protruding from the bottom surface of the electromagnetic relay case, and at least one contact side from the top surface of the electromagnetic relay socket An electromagnetic relay socket characterized in that the depth to the terminal contact position of the female terminal is deeper than the depth from the top surface of the electromagnetic relay socket to the terminal contact position of the coil-side female terminal. 3. An electromagnetic relay adapter positioned between an electromagnetic relay and an electromagnetic relay socket for connecting the electromagnetic relay to the electromagnetic relay socket, wherein the adapter is adapted to be fitted to a terminal of the electromagnetic relay. An intermediate female terminal provided on the upper surface of the adapter case for the electromagnetic relay, and a pair of intermediate terminals on the coil side protruding from the bottom surface of the adapter case for the electromagnetic relay so as to be fitted to the female terminal on the coil side of the electromagnetic relay socket. A pair of contact-side intermediate terminals protruding from the bottom surface of the adapter case for the electromagnetic relay so as to be fitted to the contact-side female terminals, wherein the protruding length of at least one contact-side intermediate terminal is greater than the protruding length of the coil-side intermediate terminal An adapter for an electromagnetic relay characterized by being short. 4. An electromagnetic relay adapter positioned between an electromagnetic relay and an electromagnetic relay socket for connecting the electromagnetic relay to the electromagnetic relay socket, the adapter including a pair of coils protruding from a bottom surface of the electromagnetic relay case. A coil side intermediate female terminal provided on the upper surface of the electromagnetic relay adapter so as to be fitted to the terminal, and a coil side intermediate female terminal provided on the upper surface of the electromagnetic relay adapter so as to be fitted to a pair of contact side terminals protruding from the bottom surface of the electromagnetic relay case. A contact-side intermediate female terminal; and an intermediate terminal protruding from the lower surface of the electromagnetic relay adapter case so as to be fitted to the female terminal of the electromagnetic relay socket, and at least one contact-side intermediate female terminal from the upper surface of the electromagnetic relay intermediate adapter. The depth to the contact position of the terminal from the top of the electromagnetic relay intermediate adapter to the terminal contact position of the coil side intermediate female terminal Intermediate adapter electromagnetic relay characterized that no.