JP2013175437A - Relay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for decreasing the possibility of non-contact between movable contacts and fixed contacts in an ON state of a relay.SOLUTION: A relay comprises: a plurality of fixed terminals; a container through which the fixed terminals are inserted and mounted thereto and which has airtight space formed thereinside; a movable contact member that is in contact with the fixed terminals in the airtight space and connects the fixed terminals electrically; a drive mechanism that moves the movable contact member; and elastic members that urge the movable contact member toward the fixed terminals. For each fixed terminal, the movable contact member has two or more movable contact portions, including movable contacts as portions for contact with the fixed terminals.

Description

  The present invention relates to a relay.

  Conventionally, a relay including a plurality of fixed terminals each having a fixed contact, a movable contact having a plurality of movable contacts in contact with the plurality of fixed terminals, and a movable iron core and a coil for moving the movable contact is known. (For example, Patent Documents 1 to 4). Moreover, as disclosed in Patent Document 1, a relay is known in which an airtight space for accommodating a fixed contact and a movable contact is formed inside. In the technique of Patent Document 1, hydrogen is sealed in an airtight space in order to suppress heat generation of the relay due to arc discharge (also simply referred to as “arc”) generated between contacts. This airtight space is formed by a container and a fixed terminal inserted through the container.

Japanese Patent Laid-Open No. 9-320437 JP 2003-217420 A JP 2005-209484 A JP-A-10-69843

  Here, in a system in which a relay is arranged, a large current (for example, a large current of 5000 A or more) may flow through the system due to a system abnormality or the like. In the state where this unexpectedly large current flows in the system, various problems may occur if the large current is interrupted by separating the movable contact and the fixed contact. Therefore, when an unexpectedly large current flows, the large current may be interrupted by a fuse incorporated in the system. Here, “various problems” corresponds to a problem in which, for example, when a contact of a relay is opened in a state where a large current flows, a large arc is generated between the contacts and the relay is damaged.

  Therefore, when an unexpected large current flows in the system, the relay is required to have a characteristic that the contact between the movable contact and the fixed contact is maintained until the fuse is blown.

  Here, when a current flows between the movable contact and the fixed contact of the relay, a force is generated in the direction of separating the contacts by the current flowing in the vicinity of the contact. This force is also called “electromagnetic repulsive force” as described in, for example, Japanese Patent No. 4258361, and is proportional to twice the flowing current. Therefore, when a large current flows through the relay, it may be difficult to maintain the contact between the movable contact and the fixed contact.

  Accordingly, an object of the present invention is to provide a technique for reducing the possibility that the movable contact and the fixed contact are in a non-contact state in the ON state of the relay.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

[Application Example 1] A plurality of fixed terminals each having a fixed contact;
The plurality of fixed terminals are respectively inserted, and a container in which the plurality of fixed terminals are attached to form an airtight space therein,
A movable contact member that contacts the plurality of fixed terminals in the airtight space and electrically connects the plurality of fixed terminals;
A drive mechanism for moving the movable contact member to bring the movable contact member into contact with the plurality of fixed terminals;
An elastic member for biasing the movable contact member toward the plurality of fixed terminals,
The movable contact member is
The relay having two or more movable contact portions including a movable contact that is a portion in contact with the fixed terminal for each fixed terminal.

  According to the relay described in Application Example 1, two or more movable contact portions are provided for each fixed terminal. Thereby, since the contact of each fixed terminal and the movable contact member is formed at two or more places, the current flowing between the fixed terminal and the movable contact portion or in the vicinity of each contact can be reduced. As a result, the electromagnetic repulsion force can be reduced, and the possibility that the movable contact and the fixed contact will be in a non-contact state when the drive mechanism is operating (the relay is in the ON state) can be reduced.

[Application Example 2] In the relay described in Application Example 1,
The movable contact member is
A plurality of movable contacts that contact the plurality of fixed terminals and electrically connect the plurality of fixed terminals;
Each said movable contact has the said movable contact part which contacts with respect to each of each said fixed terminal, The relay characterized by the above-mentioned.
According to the relay described in Application Example 2, the movable contact member has a plurality of movable contacts, each of which is a separate body. Thereby, compared with the case where a movable contact member is integral, even when the manufacturing error of a movable contact arises, a movable contact part can be made to contact a fixed terminal more reliably.

[Application Example 3] In the relay described in Application Example 2,
The distance in the moving direction in which the movable contact member moves between the movable contact portion of the movable contact and the fixed terminal in contact with the movable contact portion when the drive mechanism is not operating. When the distance between contacts is
The relay according to claim 1, wherein the distance between the contacts is different between at least one of the plurality of movable contacts and the other movable contact.

  According to the relay described in the application example 3, at the time of the closing operation in which the operation of the driving mechanism is started and the movable contact member is brought into contact with the plurality of fixed terminals, at least one of the movable contacts is more than the other movable contacts. Also, the plurality of fixed terminals can be contacted first. Thereby, even when an arc is generated by bounce, it is possible to suppress wear of the movable contact other than the movable contact that comes into contact with the arc. That is, among the plurality of movable contacts, the movable contact that contacts the plurality of fixed terminals after the movable contact that contacts the plurality of fixed terminals first (also referred to as “first movable contact group”). The child (also referred to as “second movable contact group”) has the following effects even when bounce occurs. That is, even when bounce occurs in the second movable contact group, since the first movable contact group has already electrically connected a plurality of fixed terminals, the second movable contact group and the fixed terminals are already connected. It is possible to suppress the occurrence of an arc between the two. Thereby, consumption of the 2nd movable contact group by an arc can be controlled. Here, the “movable contact group” means not only a plurality of movable contacts but also a single movable contact. The “bounce” is a rebound phenomenon that occurs during the closing operation of a member that forms a fixed contact (fixed terminal) and a member that forms a movable contact (movable contact). In other words, “bounce” is an abnormal intermittent opening / closing phenomenon between contacts.

[Application Example 4] In the relay described in Application Example 2 or Application Example 3,
When the drive mechanism is in operation and the fixed terminal and the movable contact member are in contact with each other, each of the plurality of movable contacts is in contact with a portion of the plurality of fixed terminals that are in contact with each other. When the applied force is contact pressure,
The relay according to claim 1, wherein the contact pressure is different between at least one of the plurality of movable contacts and the other movable contact.
According to the relay described in Application Example 4, it is possible to provide a relay in which at least one of the plurality of movable contacts has a contact pressure different from that of the other movable contacts. That is, the degree of freedom in designing the relay can be improved.

[Application Example 5] In the relay according to any one of Application Examples 2 to 4,
The relay, wherein the movable contact portion of at least one of the plurality of movable contacts and the movable contact portion of another movable contact are formed of different materials. .
According to the relay described in Application Example 5, the material of the movable contact can be selected according to the use environment of the relay. For example, a predetermined movable contact that consumes a movable contact portion including a movable contact is faster than a movable contact portion including another movable contact, and the movable contact portion is made of a material having a higher wear resistance than other movable contacts. Can be made. Further, for example, in a usage environment where the inrush current is large, a movable contact portion of at least one movable contact among a plurality of movable contacts is made of a material having excellent wear resistance, and other movable contacts The movable contact portion can be made of a material having low conductor resistance. Electrical connection between a plurality of fixed terminals is mainly achieved by a movable contact including a movable contact portion made of a material having low conductor resistance. Here, “a material excellent in wear resistance” and “a material excellent in wear resistance” refer to, for example, a material having a high melting point.

Application Example 6 In the relay according to any one of Application Examples 1 to 5,
The said elastic member is provided corresponding to each of the said several movable contact part, The relay characterized by the above-mentioned.
According to the relay described in Application Example 6, the force applied by the plurality of movable contact portions to each fixed terminal can be easily adjusted as compared with the case where no elastic member is provided corresponding to the plurality of movable contact portions. .

[Application Example 7] In the relay described in Application Example 6,
The movable contact member has a single path member that electrically connects the plurality of fixed terminals by a single current path,
When the driving mechanism is operated and the fixed terminal and the movable contact member are in contact with each other, the plurality of movable contact portions provided corresponding to the plurality of movable contact portions of the single path member Each of the elastic members biases the single path member toward the fixed terminal by a force of the same degree.
According to the relay described in Application Example 7, it is possible to suppress bounce of the single path member that occurs during the closing operation. For example, the time when the bounce occurs (also referred to as “bounce time”) can be shortened or zero. Here, for example, when the movable contact member is integrally formed, the single path member means the movable contact member itself. For example, the movable contact member is formed by a plurality of separate movable contacts. In the case, it means each of the movable contacts.

[Application Example 8] In the relay according to any one of Application Examples 1 to 7,
A support member that moves in accordance with the movement of the movable contact in a plane perpendicular to the moving direction in which the movable contact member moves, and that moves independently of the movement of the movable contact member in the moving direction;
The relay is characterized in that the elastic member has one end in the moving direction in contact with the movable contact member and the other end in the moving direction in contact with the support member.
According to the relay described in Application Example 8, since the movable contact member and the support member that serve as the seating surface of the elastic member move in conjunction with each other in a plane orthogonal to the moving direction, there is a possibility that the elastic member cannot maintain the correct posture. Can be reduced. Thereby, the possibility that the elastic member cannot exert the desired urging force can be reduced.

[Application Example 9] In the relay described in Application Example 8,
The movable contact member is
A central portion extending in an arrangement direction in which the plurality of fixed terminals are arranged, and a direction perpendicular to the moving direction;
Extending from the central portion toward the fixed terminal along the moving direction, and having an extending portion having the movable contact portion at an end,
At least a part of the extending portion is disposed inside the elastic member.
According to the relay described in the application example 9, at least a part of the extending portion extending along the moving direction is arranged inside the elastic member. Thereby, possibility that an elastic member cannot maintain a correct attitude | position can be reduced. Therefore, the possibility that the elastic member cannot exert the desired urging force can be reduced.

[Application Example 10] In the relay described in Application Example 9,
A part of the movable contact member is located on a side opposite to the movable contact portion across the support member.
According to the relay described in Application Example 10, even when the movable contact having the central portion and the extending portion is provided, the other end portion of the elastic member can be easily brought into contact with the support member.

[Application Example 11] In the relay according to Application Example 10,
The relay, wherein the support member is a magnetic body.
According to the relay described in Application Example 11, since the support member is a magnetic body, when the fixed contact and the movable contact are electrically connected, the movable contact portion sandwiching the support member among the movable contact members. The Lorentz force along the first direction can be generated with respect to the current flowing in the portion located on the opposite side of the. Here, the first direction is a direction from the movable contact member toward the fixed terminal in the moving direction of the movable contact member. Thereby, in the operation state of a drive mechanism, the contact with a movable contact member and a fixed terminal can be maintained further stably.

[Application Example 12] In the relay according to any one of Application Examples 8 to 11,
When the relay is vertically projected on a plane perpendicular to the moving direction,
The vertically projected contour of the support member has an outer portion located outside the vertically projected contour of the movable contact member;
The relay further includes a regulating portion that abuts on the outer portion and regulates the movement of the support member in the plane.
According to the relay described in Application Example 12, since the support member has the outer portion, the space between the support member and the movable contact member and the restriction portion can be narrower than in the case where the support portion does not have the outer portion. . Thereby, the movement of the movable contact member and the support member in the direction orthogonal to the movement direction can be suppressed. For example, even when the movable contact member and the support member move in the direction along the surface, the possibility that the support member hits the restricting portion constituting the relay can be improved. Further, when the vertical projection is performed, the outer portion of the support member is positioned outside the movable contact member, so that the support member can be applied to another member instead of the movable contact member. Thereby, possibility that a movable contact member will be damaged can be reduced. Here, as a control part, the container which accommodates a movable contact member and a supporting member is mentioned, for example.

[Application Example 13] In the relay according to any one of Application Examples 1 to 12,
The movable contact member is
A relay comprising: a holding mechanism that holds the elastic member and suppresses displacement of the elastic member in a direction orthogonal to a moving direction of the movable contact member with respect to the movable contact member.
According to the relay described in Application Example 13, the displacement of the elastic member with respect to the movable contact member in the direction orthogonal to the moving direction can be suppressed by the holding mechanism. Thereby, the fluctuation | variation of the urging | biasing force of an elastic member can be suppressed. Here, the holding mechanism can be configured by, for example, a groove formed in the movable contact member. By doing so, the holding mechanism can be easily formed.

[Application Example 14] In the relay according to any one of Application Examples 1 to 13,
The relay, wherein the elastic member is a compression coil spring.
According to the relay described in Application Example 14, the elastic member can be easily formed.

[Application Example 15] In the relay according to any one of Application Examples 1 to 14,
The container is
A plurality of first containers provided corresponding to the respective fixed terminals, and through which the corresponding fixed terminals are inserted;
A second container joined to the plurality of first containers,
Each said fixed contact which each said fixed terminal has is accommodated in the said corresponding 1st container, The relay characterized by the above-mentioned.
According to the relay described in Application Example 15, since the plurality of first containers are provided corresponding to the fixed terminals, it is possible to improve the pressure resistance of the relay as compared with the case where the first container is single. In addition, since the fixed contact is accommodated in the first container, the fixed container can be connected between the fixed terminals due to the scattered particles of the members forming the fixed contact and the movable contact. Can be reduced.

Application Example 16 In the relay according to any one of Application Examples 1 to 15, the relay member further includes a protective member arranged around the elastic member so as to surround at least a part of the elastic member. A relay characterized by that.
According to the relay described in Application Example 16, even when an arc is generated between the fixed terminal and the movable contact member, the possibility that the generated arc hits the elastic member can be reduced. Thereby, possibility that an elastic member will be damaged by an arc can be reduced.

Application Example 17 In the relay according to Application Example 16, the protection member is fixed to the movable contact member by press-fitting the movable contact member into the protection member. relay.
According to the relay described in Application Example 17, the position of the protective member with respect to the movable contact member can be fixed, and the possibility that the protective member deviates from the designed position can be reduced.

[Application Example 18] The relay according to Application Example 16, wherein the protective member is partly pressed against the other members constituting the relay by the elastic member. .
According to the relay described in Application Example 18, the position of the protection member with respect to other members can be fixed by using the elasticity of the elastic member, and the possibility that the protection member deviates from the designed position can be reduced.

  In addition, this invention can be implement | achieved with a various form, For example, it can implement | achieve in aspects, such as moving bodies, such as a relay, the manufacturing method of a relay, a vehicle equipped with a relay, and a ship.

It is explanatory drawing of the electric circuit 1 provided with the relay 5 which concerns on 1st Example. It is an external appearance perspective view of the relay 5. FIG. It is a top view of the relay 5. It is 3-3 sectional drawing of the relay main body 6 of FIG. It is a perspective view of the relay main body 6 shown in FIG. 3 is a first perspective view of a related member of a movable contact member 50. FIG. It is a 2nd perspective view of the movable contact member 50 and a related member. FIG. 6 is a partial cross-sectional view of FIG. It is a 1st figure for demonstrating the relay 5a of 2nd Example. It is a perspective view of the movable contact member 50a and related member of 2nd Example. It is a 2nd figure for demonstrating the relay 5a of 2nd Example. It is a figure for demonstrating the effect at the time of using a magnetic body for the supporting member 37a. It is a figure for demonstrating the relay 5b of 3rd Example. It is a perspective view of movable contact member 50b and its related member. It is a figure for demonstrating the relay 5c of 4th Example. It is a perspective view of movable contact member 50b and its related member. It is a figure for demonstrating the relay 5d of 5th Example. It is a perspective view of movable contact member 50b and its related member. It is a figure for demonstrating the relay 5e of 6th Example. It is a perspective view of movable contact member 50a1 of the 1st example mode, and its related member. It is a figure for demonstrating the effect of a 1st embodiment. It is a side view of movable contact member 50j of the 2nd embodiment, and its related member. It is a figure for demonstrating a 3rd embodiment. It is a figure for demonstrating a 1st modification. It is a figure for demonstrating a 2nd modification. It is a figure for demonstrating the 1st example of a 3rd modification. It is a figure for demonstrating the 2nd example of a 3rd modification. It is a figure for demonstrating the 3rd example of a 3rd modification. It is a figure for demonstrating the 4th example of a 3rd modification.

Next, embodiments of the present invention will be described in the following order.
A to G. Various examples and various embodiments:
H. Variations:

A. First embodiment:
A-1. General configuration of the relay:
FIG. 1 is an explanatory diagram of an electric circuit (also referred to as “system”) 1 including a relay 5 according to the first embodiment. The electric circuit 1 is mounted on a vehicle, for example. The electric circuit 1 includes a storage battery 2 as a DC power source, a relay 5, a current conversion device 3, and a motor 4 as a load. The current conversion device 3 functions as an inverter and a converter. When power is supplied from the storage battery 2 to the motor 4 (when the storage battery 2 is discharged), the alternating current converted by the current conversion device 3 is supplied to the motor 4 to drive the motor 4. In addition, the direct current converted by the current conversion device 3 is stored in the storage battery 2 when charging the DC power source 2 with the energy regenerated by the motor 4.

  FIG. 2 is an external perspective view of the relay 5. FIG. 3 is a top view of the relay 5. FIG. 2 shows the XYZ axes for specifying the direction. In other drawings, the XYZ axes are shown as necessary. In this embodiment, the Z-axis direction is the vertical direction, the Z-axis positive direction is the upward direction, and the Z-axis negative direction is the downward direction.

  As shown in FIGS. 2 and 3, the relay 5 includes a relay body 6 and a pair of permanent magnets 800. The relay main body 6 is accommodated in a resin case (not shown). The relay main body 6 includes a pair of fixed terminals 10. The pair of fixed terminals 10 are joined to the first container 20. The fixed terminal 10 has a connection port 12 for connecting the wiring of the electric circuit 1. The pair of fixed terminals 10 are electrically connected by a movable contact member described later, and current is supplied from the DC power supply 2 to the motor 4. The permanent magnet 800 is used to stretch an arc generated between the contacts. Thereby, arc extinction is promoted. Further, a vibration isolating member made of an elastic member such as silicon rubber is disposed in the case in which the relay main body 6 is accommodated. The vibration resistance of the relay 5 can be improved by providing the vibration isolation member. Here, when a current is supplied from the DC power source 2 to the motor 4 (at the time of power supply), the side through which the current flows out of the pair of fixed terminals 10 is the “plus fixed terminal 10W” or the “input terminal 10W”. The side from which the current flows is also referred to as “minus fixed terminal 10X” or “output terminal 10X”. Moreover, below, the relay 5 in case an electric current is supplied to the motor 4 from the DC power supply 2 is demonstrated.

A-2. Detailed configuration of the relay:
A-2-1. The structure of the airtight space:
4 is a 3-3 cross-sectional view of the relay main body 6 of FIG. FIG. 5 is a perspective view of the relay main body 6 shown in FIG. FIG. 6 is a first perspective view of a related member of the movable contact member 50. FIG. 7 is a second perspective view of the movable contact member 50 and related members. 8 is a partial cross-sectional view taken along line 6-6 of FIG. FIG. 8 shows a cross-sectional view of the first movable contact 50A and related members, but the second movable contact 50B has the same configuration.

  As shown in FIG. 4, an airtight space 100 is formed inside the relay main body 6. The airtight space 100 is formed by a plurality of fixed terminals 10 </ b> W and 10 </ b> X and containers 20 and 92. The containers 20 and 92 are formed by the first container 20 having the bottom 24 on the upper side and the second container 92 having the bottom 82 on the lower side. The second container 92 is formed by airtightly bonding the bonding member 30, the base portion 32, and the iron core container 80.

  As shown in FIGS. 4 and 5, two fixed terminals 10 are provided. The fixed terminal 10 is a member having conductivity, and is formed of, for example, a metal material containing copper. The fixed terminal 10 has a substantially cylindrical shape having a bottom portion. Each of the fixed terminals 10 is inserted through the bottom 24 of the first container 20. The fixed terminal 10 has a fixed contact portion 19 at the bottom located on the lower side (Z-axis negative direction side). The fixed contact portion 19 may be formed of a metal material containing copper like the other portions of the fixed terminal 10, or a material having higher heat resistance (for example, tungsten) in order to further suppress arc damage. It may be formed. A fixed contact 18 that contacts the movable contact member 50 is formed on an end surface of the fixed contact portion 19 that faces the movable contact member 50. That is, the fixed contact portion 19 is a portion including the fixed contact 18 that contacts the movable contact member 50 in the fixed terminal 10. On the upper side (Z-axis positive direction side) of the fixed terminal 10, a flange portion 13 that extends radially outward is formed.

  The first container 20 is a member having insulating properties, and is formed of ceramic such as alumina or zirconia, and has excellent heat resistance. The first container 20 has a bottom part 24 located on the upper side and a side part 22 that forms the side surface of the first container 20. The first container 20 is open on the side facing the bottom 24. A through hole 26 through which the fixed terminal 10 passes is formed in the bottom portion 24. Here, the flange portion 13 of each fixed terminal 10 is airtightly joined to the outer surface (surface exposed to the outside) of the bottom portion 24 of the first container 20. Specifically, the fixed terminal 10 is joined to the first container 20 with the following configuration. A diaphragm portion 17 is formed on a surface of the outer surface of the flange portion 13 that faces the bottom portion 24 of the first container 20. The diaphragm portion 17 has a cylindrical shape having an inner diameter larger than that of the through hole 26. The diaphragm portion 17 is formed of an alloy such as Kovar having a thermal expansion coefficient close to that of ceramic, for example, and is joined to the bottom portion 24 of the first container 20 by brazing. For example, silver brazing is used for brazing. When the fixed terminal 10 and the diaphragm portion 17 are separate bodies, the flange portion 13 and the diaphragm portion 17 of the fixed terminal 10 are brazed. The diaphragm portion 17 and the fixed terminal 10 may be integrated. The diaphragm portion 17 is formed in order to relieve the stress generated at the joint portion caused by the difference in thermal expansion between the fixed terminal 10 and the first container 20 made of different materials. The diaphragm portion 17 can suppress damage to the joint portion between the fixed terminal 10 and the first container 20.

  The joining member 30 is made of, for example, a metal material. A rectangular opening is formed in each of the lower end and the upper end of the joining member 30. The upper end portion of the joining member 30 is airtightly joined to the lower end surface of the first container 20 by brazing. Moreover, the lower end part of the joining member 30 is airtightly joined to the base part 32 by laser welding or the like. Further, a part of the side surface of the joining member 30 is bent in the Y-axis direction in the direction from the lower side to the upper side (Z-axis direction). By doing so, the joining member 30 as a whole can be easily elastically deformed in the Z-axis direction. By bending a part of the joining member 30 in the Y-axis direction, the stress generated due to the difference in thermal expansion between the joining member 30 and the first container 20 which are different materials can be relieved.

  The base portion 32 is a magnetic body and is formed of a metal magnetic material such as iron, for example. The base portion 32 has a substantially rectangular shape, and a through hole is formed at a substantially center.

  The iron core container 80 is a non-magnetic material. The iron core container 80 has a cylindrical shape having a bottom portion 82. The upper end portion of the core container 80 is airtightly joined to the periphery of the through hole of the base portion 32 by laser welding or the like over the entire circumference.

  As described above, the members 10, 20, 30, 32, and 80 are joined in an airtight manner, whereby an airtight space 100 is formed inside. In the airtight space 100, for example, hydrogen or nitrogen or a gas mainly composed of hydrogen or nitrogen is at atmospheric pressure or higher (for example, 2 or more) in order to suppress heat generation of the fixed contact portion 19 and the movable contact member 50 due to arc generation. At atmospheric pressure). Specifically, after the members 10, 20, 30, 32, and 80 are joined, the inside of the airtight space 100 is evacuated through the ventilation pipe 69 arranged so as to communicate the inside and the outside of the airtight space 100. To do. After evacuation, a gas such as hydrogen is sealed in the hermetic space 100 through the ventilation pipe 69 until a predetermined pressure is reached. After the gas such as hydrogen is sealed at a predetermined pressure, the ventilation pipe 69 is tightened so that the gas such as hydrogen does not leak out from the airtight space 100 to the outside.

A-2-2. Movable contact member and other configurations:
As shown in FIG. 4, the relay 5 further includes a movable contact member 50, a drive mechanism 90, a compression coil spring 62 as an elastic member, and a support member 37.

  The movable contact member 50 is a member having conductivity. The movable contact member 50 electrically connects the pair of fixed terminals 10 </ b> W and 10 </ b> X when the relay 5 is in the ON state (the operation state of the drive mechanism 90). The movable contact member 50 is moved along the vertical direction (Z-axis direction) by the drive mechanism 90. Here, the direction in which the movable contact member 50 moves by the operation of the drive mechanism 90 is also referred to as “movement direction D1”. The direction orthogonal to the moving direction D1 is also referred to as “horizontal direction”.

  As shown in FIGS. 6 and 7, the movable contact member 50 includes a first movable contact 50 </ b> A and a second movable contact 50 </ b> B. The first movable contact 50A and the second movable contact 50B are separate bodies. That is, the first movable contact 50A and the second movable contact 50B are configured to be able to move independently in the moving direction D1 by the drive mechanism 90 and the compression coil spring 62, respectively. Each of the first movable contact 50A and the second movable contact 50B electrically connects the pair of fixed terminals 10W and 10X when the relay 5 is in the ON state.

  The first movable contact 50A and the second movable contact 50B are each in the horizontal direction and in parallel with the arrangement direction (Y-axis direction, opposite direction) in which the pair of fixed terminals 10W and 10X are arranged. It has contact body 52A, 52B extended. Each of the contact main bodies 52A and 52B has a flat plate shape. The first movable contact 50A and the second movable contact 50B have the same configuration except for the arrangement position in the airtight space 100. Moreover, about the 1st movable contact 50A and the 2nd movable contact 50B, the same code | symbol is attached about the same structural member except the last one character, and the same code | symbol is attached | subjected to the structural member of the 1st movable contact 50A Finally, the identification code “A” is attached, and the constituent members of the second movable contact 50B are attached with the identification code “B” at the end of the same code. Furthermore, when the first movable contact 50A and the second movable contact 50B are collectively described, they are referred to as “movable contact member 50”. In addition, when the constituent members of the first movable contact 50A and the second movable contact 50B are collectively described, no identification code is attached.

  A movable contact portion 57 that protrudes from the contact main body 52 toward the corresponding fixed terminal 10 is provided in a portion (opposed portion) of the contact main body 52 that faces the fixed contact portion 19. The movable contact 58 that is a portion that contacts the fixed terminal 10 is formed by the end face of the movable contact portion 57. The movable contact portion 57 may be formed of the same material (for example, copper) as the other portions of the movable contact member 50, or a material having higher heat resistance (for example, tungsten) in order to further suppress arc damage. ). Here, the movable contact portion 57 corresponds to the “movable contact portion” described in the means for solving the problem. In addition, although the movable contact part 57 was the shape protruded from the contactor main body 52, you may form by the contactor main body 52 itself. That is, when the movable contact portion 57 is omitted, a portion of the contact main body 52 that faces the fixed contact portion 19 becomes a movable contact portion.

  As described above, the movable contact member 50 has the two movable contact portions 57WA and 57WB that come into contact with the input terminal 10W in the ON state of the relay 5, and the two movable contact portions 57XA and 57XB that come into contact with the output terminal 10X. Have Each movable contact portion 57WA, 57WB, 57WA, 57WB has a movable contact 58. Here, in the ON state of the relay 5, the first movable contact 50A and the second movable contact 50B form a parallel current path that electrically connects the pair of fixed terminals 10W and 10X. That is, the first movable contact 50A and the second movable contact 50B form a single (series) current path that electrically connects the pair of fixed terminals 10W and 10X, respectively. Therefore, the first movable contact 50A and the second movable contact 50B can also be referred to as “single path members 50A, 50B”, respectively.

  As shown in FIGS. 6 to 8, a groove 51 as a holding mechanism is formed on the side of the first and second movable contacts 50 </ b> A and 50 </ b> B opposite to the side where the fixed terminal 10 is located. Yes. A groove | channel is provided in the approximate center in the horizontal direction of each movable contactor 50A, 50B, and is annular. Further, as shown in FIG. 8, a through hole through which the columnar rod-shaped member 130 is inserted is formed in the central portion of the groove 51. Of the rod-shaped members 130, one inserted through the first movable contact 50A is also referred to as a rod-shaped member 130A, and the other inserted through the second movable contact 50B is also referred to as a rod-shaped member 130B. The rod-shaped member 130 has a restricting portion 131 on one end side. The restricting part 131 is located on the surface of the contact body 52 facing the fixed terminal 10 and prevents the movable contact member 50 from moving to the fixed terminal 10 in the OFF state of the relay 5. Further, the other end side 132 of the rod-shaped member 130 is fixed to the support member 37.

  The support member 37 is formed of a metal such as stainless steel, for example. The support member 37 is located below the movable contact member 50. The support member 37 has a flat plate shape extending in the horizontal direction. As shown in FIG. 8, an annular groove 31 is formed in a portion of the support member 37 that faces the groove 51. Further, in the support member 37, two through holes are formed in the central portion of the annular groove 31 in which the two rod-shaped members 130 </ b> A and 130 </ b> B are inserted and fixed.

  The compression coil spring 62 is elastically deformable in the moving direction D1 and biases the movable contact member 50 toward the fixed terminal 10 when the relay 5 is in the ON state. Two compression coil springs 62 are provided corresponding to the respective movable contacts 50A and 50B. Here, of the compression coil springs 62, one that biases the movable contact 50A is also referred to as a compression coil spring 62A, and the other that biases the movable contact 50B is also referred to as a compression coil spring 62B. As shown in FIG. 8, one end of the compression coil spring 62 in the movement direction D <b> 1 contacts the movable contact member 50, and the other end in the movement direction D <b> 1 contacts the support member 37. In other words, the movable contact member 50 and the support member 37 serve as a seating surface of the compression coil spring 62. Specifically, both ends of the compression coil spring 62 in the moving direction D1 are disposed in the grooves 51 and 31. A rod-shaped member 130 is disposed inside the compression coil spring 62.

  As shown in FIGS. 4 and 5, the drive mechanism 90 moves the movable contact member 50 in order to bring the movable contact member 50 into contact with the fixed terminal 10. That is, the drive mechanism 90 moves the movable contact member 50 in order to open and close the movable contact 58 and the fixed contact 18. The drive mechanism 90 includes a rod 60, a base portion 32, a fixed iron core 70, a movable iron core 72, an iron core container 80, a coil 44, a coil bobbin 42, a coil container 40, and a first elastic member. Spring 64.

  The coil 44 is wound around a hollow cylindrical resin coil bobbin 42. The coil container 40 is a magnetic body, and is formed of a metal magnetic material such as iron, for example. The coil container 40 has a rectangular parallelepiped shape, and houses the coil 44 inside.

  The iron core container 80 has a cylindrical shape having a bottom 82, and a rubber 86 as an elastic body is disposed on the bottom.

  The fixed iron core 70 has a cylindrical shape, and a through hole 70h is formed from the upper end to the lower end. A part of the fixed iron core 70 is accommodated inside the iron core container 80. The fixed iron core 70 is fixed to the base portion 32 by welding or the like.

  The movable iron core 72 has a cylindrical shape, and a through hole 72h is formed from the upper end to the vicinity of the lower end. The movable iron core 72 is accommodated on the bottom of the iron core container 80 via a rubber 86. The upper end surface of the movable iron core 72 is disposed so as to face the lower end surface of the fixed iron core 70. When the coil 44 is energized, the movable iron core 72 is attracted to the fixed iron core 70 and moves upward.

  The first spring 64 is disposed between the movable iron core 72 and the fixed iron core 70 in the movement direction D1 and biases both the members 70 and 72 in directions away from each other.

  The rod 60 is a nonmagnetic material. The rod 60 includes a cylindrical shaft portion 60a, one end portion 60b provided at one end of the shaft portion 60a, and the other end portion 60c provided at the other end of the shaft portion 60a. The one end 60b is fitted and fixed to the support member 37, and the support member 37 is disposed on the enlarged diameter portion 60d. The other end 60 c is fixed to the movable iron core 72. Note that the rod 60 and the rod-shaped member 130 may be combined and called a “rod member” that moves the movable contact member 50 toward the fixed terminal 10.

A-3. Relay operation description:
Next, the relay 5 is in an ON state (also referred to as an operating state of the drive mechanism 90 when the coil is energized) and an OFF state (also referred to as a non-operating state of the drive mechanism 90 when the coil is not energized). I do. When the coil 44 is energized and the drive mechanism 90 is operated, the movable iron core 72 is attracted to the fixed iron core 70. That is, the movable iron core 72 approaches the fixed iron core 70 against the urging force of the first spring 64 and comes into contact with the fixed iron core 70. When the movable iron core 72 moves upward, the rod 60 also moves upward. When the rod 60 moves upward, the support member 37 and the rod-shaped member 130 also move upward. When the support member 37 moves upward, the movable contact member 50 also moves upward (in the direction approaching the fixed terminal 10) and contacts the fixed terminal 10. When the support member 37 further moves upward from the point where the movable contact member 50 contacts the fixed terminal 10, the compression coil spring 62 is further compressed, and the movable contact member 50 is biased toward the fixed terminal 10 by a predetermined biasing force. To do.

  On the other hand, when the energization to the coil 44 is interrupted and the drive mechanism 90 is in a non-operating state, the rod 60 moves downward, and the support member 37 fixed to the rod 60 also moves downward. Thereby, the movable contact member 50 also moves downward, and the movable contact member 50 and the fixed terminal 10 are in a non-contact state. Thereby, conduction between the two fixed terminals 10W and 10X is interrupted.

A-4. effect:
As described above, the relay 5 of the first embodiment is provided with the two movable contact portions 57 for the fixed terminals 10W and 10X, respectively. Thereby, each fixed terminal 10W and 10X and the movable contact member 50 are in two contact points. Therefore, the current flowing between the fixed terminal 10 and the movable contact portion 57 and in the vicinity of each of the contacts 18 and 58 can be halved compared to the case where there is one movable contact portion 57 that contacts one fixed terminal 10. Thereby, the electromagnetic repulsive force can be reduced, and the possibility that the movable contact 58 and the fixed contact 18 are in a non-contact state in a state where the drive mechanism 90 is operating can be reduced.

  Further, the relay 5 of the first embodiment is provided with the first and second movable contacts 50A and 50B without increasing the number of fixed terminals 10 which are constituent members forming the hermetic space 100, so that the contacts The number of 18,58 is increased. Here, since the fixed terminal 10 needs to be airtightly joined to the first container 20, when the number of the fixed terminals 10 increases, it may be difficult to maintain the airtightness of the airtight space 100. However, as described above, the movable contact member 50 has the two movable contact portions 57 for each of the fixed terminals 10W and 10X while maintaining the number of the fixed terminals 10 at two, so that the airtight space 100 is sealed. Electromagnetic repulsive force can be reduced while maintaining the properties.

  In the relay 5 of the first embodiment, the first and second movable contacts 50A and 50B each having one movable contact portion 57 that contacts the fixed terminals 10W and 10X are separate bodies. Thereby, compared with the case where the 1st and 2nd movable contacts 50A and 50B are united, even when a manufacturing error arises in the 1st and 2nd movable contacts 50A and 50B, movable contact part 57 is obtained. Can be reliably brought into contact with the pair of fixed terminals 10W and 10X. Moreover, the freedom degree of design of the movable contact member 50 can be improved. For example, the first movable contact 50A and the second movable contact 50B can be made of different materials.

  Moreover, the relay 5 of 1st Example is equipped with the groove | channel 51 for the movable contact member 50 holding the compression coil spring 62, and suppressing the position shift of the compression coil spring 62 in the horizontal direction with respect to the movable contact member 50 ( FIG. 8). Thereby, the position shift with respect to the movable contact member 50 of the compression coil spring 62 can be suppressed, and the fluctuation | variation of the urging | biasing force of the compression coil spring 62 can be suppressed. Further, the holding mechanism can be easily formed by configuring the holding mechanism with the groove 51. Further, the compression coil spring 62 generally has a large displacement with respect to a predetermined load as compared to other elastic members such as a leaf spring. Therefore, the degree of freedom in designing the relay 5 is improved by using the compression coil spring 62 as the elastic member. For example, the compression coil spring 62 can be disposed as an elastic member in a limited narrow space. Further, the elastic member can be easily formed by using the compression coil spring 62.

  Further, the relay 5 of the first embodiment has a support member 37 that forms a seating surface of the compression coil spring 62. One end portion 60 b of the rod 60 is fixed to the support member 37. Thereby, the movable contact member 50 movable in conjunction with the rod 60 can be easily assembled as a part of the relay 5.

B. Second embodiment:
FIG. 9 is a first diagram for explaining the relay 5a of the second embodiment. FIG. 10 is a perspective view of the movable contact member 50a and related members of the second embodiment. FIG. 11 is a second diagram for explaining the relay 5a of the second embodiment. 9 is a view corresponding to the perspective view of the cross-sectional view shown in FIG. 4, and shows a perspective view of the fixed terminal 10, the movable contact member 50a, the compression coil spring 62, and the support member 37a. FIG. 11 shows a part of a cross section (cross section parallel to the Y axis and the Z axis) passing through the second movable contact 50aB located on the X axis positive direction side in the relay main body 6a shown in FIG. ing.

  The differences from the relay 5 of the first embodiment are the configuration of the movable contact member 50 a, the number of compression coil springs 62, the configuration of the support member 37 a, and the attachment structure on one end side of the rod 60. Since the other configuration is the same as that of the relay 5 of the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 10, the movable contact member 50a according to the second embodiment includes a first movable contact 50aA and a second movable contact 50aB. The first and second movable contacts 50aA and 50aB are separate bodies. In other words, the first and second movable contacts 50aA and 50aB form a single (series) current path that electrically connects the pair of fixed terminals 10W and 10X in the ON state of the relay 5a. To do. Therefore, similarly to the first embodiment, the first and second movable contacts 50aA and 50aB can also be referred to as “single path members 50aA and 50aB”, respectively. The first and second movable contacts 50aA and 50aB have the same configuration except for the arrangement position in the airtight space 100. Of the first and second movable contacts 50aA and 50aB, the members constituting the first movable contact 50aA are marked with “A” at the end of the reference numerals to constitute the second movable contact 50aB. The member is marked with “B” at the end of the symbol. In addition, among the first and second movable contacts 50aA and 50aB, the member provided corresponding to the input terminal 10W is marked with “W” in the second lower code, and the output terminal 10X. “X” is attached to the second lower symbol for the members provided corresponding to. When the first and second movable contacts 50aA and 50aB are used without distinction, the “movable contact member 50a” is simply used. When the members constituting the movable contact member 50a are used without distinction, the reference sign “A”, “B”, “W”, and “X” may not be attached.

  As shown in FIGS. 9 to 11, the first and second movable contacts 50 a </ i> A and 50 a </ i> B each include a center part 52 a </ i> A and 52 a </ i> B and extending parts 54 a </ i> WA, 54 a </ i> WB, 54 a </ i> XA and 54 a </ i> XB. Hereinafter, when the central portions 52aA and 52aB are used without distinction, they are also simply referred to as “central portion 52a”. Further, when the extending portions 54aWA, 54aWB, 54aXA, and 54aXB are used without distinction, they are also simply referred to as “extended portions 54a”.

  The central portion 52a has a plate shape and extends in the arrangement direction (Y-axis direction) in which the pair of fixed terminals 10W and 10X are arranged. The extending portion 54a extends along the moving direction D1 from the central portion 52a toward the corresponding fixed terminal 10. Specifically, the extending portion 54a extends from the central portion 52a by a thickness equal to or greater than the thickness of the central portion 52a. As shown in FIG. 11, the part including the end surface facing the fixed terminal 10 in the extending part 54a becomes the movable contact part 57a. That is, the extending portion 54 a has the movable contact portion 57 a at the end facing the fixed terminal 10. In addition, a movable contact 58 is formed on an end surface of the extending portion 54a (movable contact portion 57a) facing the fixed terminal 10. The lower part of the extending part 54a is attached to the central part 52a. Here, the movable contact portion 57a corresponds to the “movable contact portion” described in the means for solving the problem.

  As shown in FIGS. 9-11, the support member 37a is flat form. The support member 37a is located between the movable contact portion 57a and the central portion 52a in the movement direction D1. Specifically, the support member 37a is disposed on a surface facing the fixed contact 18 out of the two surfaces of the central portion 52a. Four extending portions 54a are inserted through the support member 37a. The upper end of the rod 60 is attached to the support member 37a by press-fitting, welding, or the like.

  The support member 37a configured as described above and the movable contact member 50a have the following relationship. That is, the support member 37a moves in accordance with the movement of the movable contact member 50a in a plane orthogonal to the movement direction D1. Specifically, the movable contact member 50a and the support member 37a rotate in conjunction with each other with the central axis of the rod 60 as an axis. Further, the support member 37 a is fixed to the rod 60, and the movable contact member 50 a is not fixed to the rod 60. Further, the support member 37a is not fixed to the movable contact member 50a. Therefore, the support member 37a can move independently of the movement of the movable contact member 50a in the movement direction D1. That is, in the operating state of the drive mechanism 90, the support member 37a is lifted by the rod 60, and the support member 37a can be pulled away from the central portion 52a.

  Four compression coil springs 62 are provided corresponding to each movable contact portion 57a. Specifically, the compression coil spring 62 is disposed outside the extending portion 54a. That is, as shown in FIG. 11, the movable contact member 50 a and the support member 37 a constitute the seating surface of the compression coil spring 62. Further, when the relay 5a is vertically projected on a plane perpendicular to the moving direction D1, each compression coil spring 62 is arranged so that the corresponding movable contact 58 is located inside the contour line of each compression coil spring 62. ing.

  Each of the compression coil springs 62 urges the movable contact member 50 a toward the fixed terminal 10 by the same urging force in the operating state of the drive mechanism 90. Here, the “same urging force” is used not only to “same urging force” but also to allow variations due to manufacturing errors of the relay 5 a such as the compression coil spring 62. For example, the “same biasing force” includes an error within a range of ± 30% with respect to the target biasing force. That is, when the target urging force is Pr and the actual urging force of the compression coil spring 62 is Pz, a relationship of 0.7 × Pr ≦ Pz ≦ 1.3 × Pr holds. In order to further suppress the bounce during the closing operation, it is preferable that the “same urging force” is within a range of ± 10% with respect to the urging force for which the error is intended. That is, the relationship of 0.9 × Pr ≦ Pz ≦ 1.1 × Pr holds. Here, in the case of the present embodiment, the relay 5a is configured such that the spring constants of the four compression coil springs 62 are approximately the same, and the displacement amount of the compression coil spring 62 in the operating state of the drive mechanism 90 is approximately the same. Has been. However, a variation of ± 10% for the spring constant and a variation of ± 20% for the displacement amount are allowed.

  When the relay 5a is turned on, the rod 60 moves upward and the support member 37a also moves upward. When the support member 37a moves upward, the movable contact member 50a also moves upward and contacts the fixed terminal 10. When the support member 37a further moves upward from the point where the movable contact member 50a contacts the fixed terminal 10, the compression coil spring 62 is further compressed, and the movable contact member 50a is biased toward the fixed terminal 10 by a predetermined biasing force. To do. When the relay 5a is turned off, the rod 60 moves downward, and the support member 37a fixed to the rod 60 also moves downward. Thereby, the movable contact member 50a is also moved downward, and the movable contact member 50a and the fixed terminal 10 are brought into a non-contact state.

  As described above, the relay 5a of the second embodiment is provided with the two movable contact portions 57a for the fixed terminals 10W and 10X, respectively, similarly to the relay 5 of the first embodiment. Thereby, the relay 5a of 2nd Example has an effect similar to the relay 5 of 1st Example. For example, the relay 5a of the second embodiment can reduce the electromagnetic repulsive force, and can reduce the possibility that the movable contact 58 and the fixed contact 18 are in a non-contact state when the drive mechanism 90 is operating.

  Moreover, the relay 5a of 2nd Example is provided with the compression coil spring 62 corresponding to each movable contact part 57a (FIG. 9). Thereby, compared with the relay 5 of the said 1st Example, the force which the some movable contact 58 applies with respect to each fixed terminal 10 can be adjusted easily. In the relay 5a of the second embodiment, each of the compression coil springs 62 urges the movable contact member 50a toward the fixed terminal 10 with the same urging force. Specifically, the urging forces of the two compression coil springs 62 provided corresponding to the two movable contact portions 57a of the first movable contact 50aA are the same, and the second movable contact 50aB The urging forces of the two compression coil springs 62 provided corresponding to the two movable contact portions 57a are approximately the same. Thereby, the bounce of the 1st and 2nd movable contacts 50aA and 50aB which generate | occur | produce at the time of closing operation can be suppressed. Thereby, the various malfunction of the relay 5a resulting from the arc produced by bounce can be reduced. “Various problems” means that, for example, members forming the fixed contact 18 and the movable contact 58 are melted by the occurrence of an arc, and the fixed terminal 10 and the movable contact member 50a are fixed. Further, for example, it means that a member forming a contact (also referred to as “contact forming member”) is transferred. When the transition occurs, a protrusion may be formed on the contact forming member. The formation of this protrusion may increase the contact resistance between the contacts or cause locking.

  In the relay 5a of the second embodiment, the movable contact member 50a and the support member 37a, which are the seating surfaces of the compression coil springs 62, move in conjunction with each other in a plane orthogonal to the moving direction. Thereby, even when the movable contact member 50a and the support member 37a rotate about the central axis of the rod 60, the possibility that the compression coil spring 62 cannot maintain the correct posture can be reduced. That is, it is possible to reduce the possibility of misalignment due to the compression coil spring 62 being twisted or the like. Thereby, the possibility that each of the compression coil springs 62 cannot exert the desired urging force can be reduced. That is, the respective urging forces of the respective compression coil springs 62 can be set more stably and at the same level, and bounces generated during the closing operation of the relay 5a can be further suppressed.

  In the relay 5a of the second embodiment, the central portion 52a, which is a part of the movable contact member 50a, is located on the opposite side of the movable contact portion 57a with the support member 37a interposed therebetween. Thereby, the other end portion of the compression coil spring 62 can be easily brought into contact with the support member 37a.

  In the relay 5a of the second embodiment, a part of the extending portion 54a is disposed inside the compression coil spring 62. Thereby, the possibility that the compression coil spring 62 cannot maintain the correct posture can be further reduced.

  Here, the material of the support member 37a is not particularly limited, but it is preferable to use a magnetic material such as stainless steel. FIG. 12 is a diagram for explaining the effect when a magnetic material is used for the support member 37a. FIG. 12 schematically illustrates the central portion 52a, the support member 37a, and the rod 60. As shown in FIG. 12, in the ON state of the relay 5a, a current flows in a direction (+ Y-axis direction) from the back side to the near side of the central portion 52a. Around this current, a counterclockwise magnetic flux Ba is generated. Here, if the support member 37a which is a magnetic body is arrange | positioned on the center part 52a, magnetic flux Ba will be drawn near to the support member 37a side. Thereby, as shown in FIG. 12, among the magnetic flux Ba passing through the central portion 52a, the magnetic flux density in the left direction (X-axis positive direction) decreases and the magnetic flux density in the right direction (X-axis negative direction) increases. As the rightward magnetic flux density increases, an upward Lorentz force Fp (also referred to as “attraction force Fp”) is generated with respect to the current flowing through the central portion 52a. Since the Lorentz force Fp acts in a direction in which the movable contact member 50a is brought closer to the fixed contact 18, the contact between the fixed terminal 10 and the movable contact member 50a can be maintained more stably. In particular, when a large current (for example, 5000 A or more) flows through the movable contact member 50a, a so-called electromagnetic repulsive force increases, and it may be difficult to maintain contact between the fixed terminal 10 and the movable contact member 50a. However, the support member 37a is made of a magnetic material, and the contact between the fixed terminal 10 and the movable contact member 50a can be maintained more stably without increasing the biasing force of the compression coil spring 62 by generating the attractive force Fp. In particular, in the present embodiment, the member that generates the suction force Fp and the member that forms the seating surface of the compression coil spring 62 are configured by the support member 37a that is the same member. Thereby, the contact of the fixed terminal 10 and the movable contact member 50a can be maintained more stably while reducing the number of parts of the relay 5a.

C. Third embodiment:
FIG. 13 is a diagram for explaining the relay 5b of the third embodiment. FIG. 14 is a perspective view of the movable contact member 50b and its related members. FIG. 13 is a cross-sectional view corresponding to the cross-sectional view shown in FIG. 3 in the relay main body 6b. The difference between the relay 5b of the third embodiment and the relay 5 of the first embodiment is that the configuration of the movable contact member 50b, the configuration of the support member 37b, the number of the arrangement of the compression coil springs 62, and the mounting member 164 are newly provided. This is the point. Since the other configuration is the same as that of the first embodiment, the same reference numeral is assigned to the same configuration and the description thereof is omitted.

  As shown in FIG. 14, the movable contact member 50b includes a first movable contact 50bA and a second movable contact 50bB, which are separate bodies, as in the first embodiment. A rod 60 is passed between the first movable contact 50bA and the second movable contact 50bB. One end 60 b of the rod 60 is disposed above the contact main body 52. In the OFF state of the relay 5b, the end 60b presses the movable contact member 50b downward, so that the movement of the movable contact member 50b toward the fixed terminal 10 is restricted. Of the surfaces of the first and second movable contacts 50bA and 50bB, on the surface opposite to the surface on which the movable contact portion 57 is formed, a columnar protrusion 59b (FIG. 13) extending downward is provided. A groove (not shown) is formed as a holding member formed around the protrusion 59b. One end of the compression coil spring 62 is disposed outside the protrusion 59b. The protrusion 59b also constitutes at least a part of the “holding mechanism” described in the means for solving the problem.

  The base portion 37 b is fixed to the base portion 32. The base portion 37b is formed of, for example, a synthetic resin. A protrusion 37b1 (FIG. 13) extending toward the movable contact member 50b is formed in a portion of the base 37b that faces the protrusion 59b. An annular groove (not shown) is formed in a portion of the base portion 37b formed around the protruding portion 37b1. The other end of the compression coil spring 62 is disposed in the groove of the base portion 37b. In addition, the other end of the compression coil spring 62 is disposed outside the protrusion 37b1.

  As with the second embodiment, four compression coil springs 62 are provided corresponding to each movable contact portion 57. Specifically, as in the second embodiment, when the relay 5b is vertically projected onto a plane perpendicular to the moving direction D1, the corresponding movable contact 58 is located inside the contour of each compression coil spring 62. Further, in the ON state of the relay 5b, each compression coil spring 62 urges the movable contact member 50b toward the fixed terminal 10 with the same urging force.

  As shown in FIG. 14, the mounting member 164 includes a bottom surface portion 164a, and a first side surface portion 164b and a second side surface portion 164c extending downward from the bottom surface portion 164a. The first side surface portion 164b and the second side surface portion 164c face each other. The bottom surface portion 164a is disposed on the surface of the movable contact member 50b that faces the fixed terminal 10. A through hole through which the rod 60 is inserted is formed in the bottom surface portion 164a. The material of the mounting member 164 is not particularly limited, but it is preferable to use a nonmagnetic material.

  When the coil 44 of the relay 5 b is energized, the restriction by the one end 60 b is released by the rod 60 moving upward, and the movable contact member 50 b is moved upward by the biasing force of the compression coil spring 62. As a result, the movable contact member 50 b comes into contact with the fixed terminal 10. On the other hand, when the relay 5b is turned off, the rod 60 moves downward, and is pushed by the one end 60b, so that the movable contact member 50b moves downward. Thereby, the movable contact member 50b is separated from the fixed terminal 10 and is brought into a non-contact state.

  As described above, the relay 5b of the third embodiment is provided with the two movable contact portions 57 for the fixed terminals 10W and 10X, respectively, similarly to the relay 5 of the first embodiment. Thereby, the relay 5b of 3rd Example has an effect similar to the relay 5 of 1st Example. For example, the relay 5b of the third embodiment can reduce the electromagnetic repulsive force, and can reduce the possibility that the movable contact 58 and the fixed contact 18 are in a non-contact state when the drive mechanism 90 is operating.

  In the relay 5b of the third embodiment, the compression coil spring 62 is provided corresponding to the movable contact portion 57. When the relay 5b is in the ON state, the urging force of the compression coil spring 62 against the movable contact member 50b is approximately the same. It is. Thereby, similarly to the relay 5a of 2nd Example, the bounce of the 1st and 2nd movable contactors 50bA and 50bB which generate | occur | produce at the time of closing operation can be suppressed.

  Moreover, the relay 5b of 3rd Example can reduce possibility that the position of 1st and 2nd movable contact 50bA, 50bB will become unstable by having the mounting member 164. FIG. Accordingly, in-plane twisting (displacement) of the first and second movable contacts 50bA and 50bB can be prevented in a plane perpendicular to the moving direction D1. Therefore, the possibility that the compression coil spring 62 cannot maintain the correct posture can be reduced.

D. Fourth embodiment:
FIG. 15 is a diagram for explaining the relay 5c of the fourth embodiment. FIG. 16 is a perspective view of the movable contact member 50b and related members. 15 is a cross-sectional view corresponding to the cross-sectional view shown in FIG. 3 in the relay main body 6c. The difference between the relay 5c of the fourth embodiment and the relay 5b of the third embodiment is that the support member 37c moves as the rod 60 moves upward. The other configurations are the same as those in the third embodiment, and therefore the same configurations are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 15, the support member 37 c is disposed on an E-shaped ring 169 fixed to the rod 60. As a result, the support member 37c also moves upward in conjunction with the upward movement of the rod 60. The material of the E-type ring 169 is not particularly limited, but it is preferable to use a nonmagnetic material.

  As described above, the relay 5c of the fourth embodiment is provided with the two movable contact portions 57 for the fixed terminals 10W and 10X, respectively, similarly to the relay 5 of the first embodiment. Thereby, the relay 5c of 4th Example has an effect similar to the relay 5 of 1st Example. For example, the relay 5c of the fourth embodiment can reduce the electromagnetic repulsive force, and can reduce the possibility that the movable contact 58 and the fixed contact 18 are in a non-contact state when the drive mechanism 90 is operating.

  Further, in the relay 5c of the fourth embodiment, the compression coil spring 62 is provided corresponding to the movable contact portion 57, and when the relay 5c is in the ON state, the urging force of the compression coil spring 62 against the movable contact member 50b is approximately the same. It is. Thereby, similarly to the relay 5a of 2nd Example, the bounce of the 1st and 2nd movable contactors 50bA and 50bB which generate | occur | produce at the time of closing operation can be suppressed.

E. Fifth Embodiment FIG. 17 is a diagram for explaining a relay 5d according to a fifth embodiment. FIG. 18 is a perspective view of the movable contact member 50b and related members. 17 is a cross-sectional view corresponding to the cross-sectional view shown in FIG. 3 in the relay main body 6c. The difference between the relay 5d of the fifth embodiment and the relay 5c of the fourth embodiment is that the position of the upper end portion 60b of the rod 60, the point that the rod 60 has an enlarged diameter portion 60d instead of the E-shaped ring 169, and a new The adjustment member 160 is provided at the point. Since the other configuration is the same as that of the relay 5c of the fourth embodiment, the same configuration as the configuration of the fourth embodiment is denoted by the same reference numerals and the description thereof is omitted.

  The adjustment member 160 has a cylindrical shape that opens in the Y-axis direction. The movable contact member 50b and the support member 37c are arranged so as to pass through the inside of the cylindrical adjustment member 160. The adjustment member 160 presses the movable contact member 50b and restricts the movement of the movable contact 50d in the moving direction D1 when the relay 5d is in the OFF state. In the present embodiment, the adjustment member 160 is used to hold the compression coil spring 62 in a compressed state in the OFF state of the relay 5d. That is, the distance in the moving direction D1 of the movable contact member 50b and the support member 37c that form the seating surface of the compression coil spring 62 is adjusted so that the compression coil spring 62 is compressed in the OFF state of the relay 5d. Yes. The material of the adjustment member 160 is not particularly limited, but a nonmagnetic material is preferably used.

  As shown in FIG. 17, one end 60b of the rod 60 is fixed to the support member 37c. Further, a support member 37c is disposed on the enlarged diameter portion 60d via the adjustment member 160.

  When the relay 5d is turned on, the rod 60 moves upward. As a result, the support member 37c and the movable contact member 50b also move upward. In a state where the movable contact member 50b is in contact with the fixed contact portion 19, the support member 37c is further moved upward by further moving the rod 60 upward. Thereby, the space | interval in the moving direction D1 of the support member 37c and the movable contact member 50b becomes short, and the compression coil spring 62 is further compressed.

  As described above, the relay 5d of the fifth embodiment is provided with the two movable contact portions 58 for the fixed terminals 10W and 10X, respectively, similarly to the relay 5 of the first embodiment. Thereby, the relay 5d of 5th Example has an effect similar to the relay 5 of 1st Example. For example, the relay 5d of the fifth embodiment can reduce the electromagnetic repulsive force, and can reduce the possibility that the movable contact 58 and the fixed contact 18 are in a non-contact state when the drive mechanism 90 is operating.

  Further, the adjustment member 160 causes the movable contact member 50b and the support member 37c included in the relay 5d of the fifth embodiment to move together around the central axis of the rod 60 in a plane orthogonal to the movement direction D1. This prevents in-plane torsion (displacement) between the first and second movable contacts 50bA, 50bB forming the seating surface of the compression coil spring 62 and the support member 37c in a plane perpendicular to the moving direction D1. it can. Thereby, the possibility that the compression coil spring 62 cannot maintain the correct posture can be reduced. In addition, by including the adjustment member 160, the compression coil spring 62 can be easily compressed when the drive mechanism 90 is not operating. In addition, the movable contact member 50b includes the first and second movable contacts 50bA and 50bB as separate bodies. Thus, as in the other embodiments described above, the first and second movable contacts 50bA, 50bB are reliably paired with each other as compared with the case where the first and second movable contacts 50bA, 50bB are integrated. The fixed terminals 10W and 10X can be brought into contact with each other.

F. Example 6:
FIG. 19 is a diagram for explaining the relay 5e of the sixth embodiment. 19 is a cross-sectional view corresponding to the cross-sectional view shown in FIG. 3 in the relay main body 6e. The difference between the relay 5e of the sixth embodiment and the relay 5a (FIG. 9) of the second embodiment is the number of first containers 20e and the structure of the joining member 30e. About another structure, since it is the structure similar to the relay 5a of 2nd Example, about the same structure, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The first container 20 e is provided corresponding to each of the fixed terminals 10. The first container 20e has a cylindrical shape having a bottom on the upper side. In the present embodiment, two first containers 20 are provided corresponding to the number of fixed terminals 10. As in the above embodiments, the relay main body 6e forms an airtight space 100 on the inside by the fixed terminal 10, the first container 20e, and the second container 92. The fixed contact 18 and the movable contact 58 are accommodated inside the first container 20e in the airtight space 100 that is an internal space. Specifically, regardless of the movement of the movable contact member 50 a, the fixed contact 18 and the movable contact 58 are accommodated inside the corresponding first container 20 e in the airtight space 100.

  The joining member 30e includes a first joining member 301 and a second joining member 303. The first and second joining members 301 and 303 are made of, for example, a metal material. In the present embodiment, the second bonding member 303 bonded to the first container 20 e made of alumina has a smaller thermal expansion coefficient than the first bonding member 303. For example, the first bonding member 301 is manufactured using stainless steel, and the second bonding member 303 is manufactured using Kovar or 42 alloy. By interposing a second bonding member 303 having a coefficient of thermal expansion comparable to that of ceramic between the first bonding member 301 made of stainless steel and the first container 20e made of ceramic, the first container The stress caused by the difference in thermal expansion between 20e and the first bonding member 301 can be relaxed. Thereby, possibility that the relay main body 6e will be damaged can be reduced.

  On one surface (upper surface) of the first bonding member 301, two openings for allowing a part of the movable contact member 50a to pass are formed. In addition, an opening is formed in a surface (lower surface) facing one surface of the first bonding member 301. The second bonding member 303 is provided corresponding to the first container 20e. In the present embodiment, two second joining members 303 are provided. The second bonding member 303 has a cylindrical shape. The second bonding member 303 is bonded to the first container 20e and the first bonding member 301, respectively. Specifically, the first and second joining members 301 and 303 are hermetically joined by laser welding, resistance welding, or the like. The second joining member 303 and the first container 20e are joined by brazing.

  As described above, the relay 5e of the sixth embodiment has the same effect as the relay 5a of the second embodiment. For example, since the two movable contact portions 57a are provided for the fixed terminals 10W and 10X, the electromagnetic repulsive force can be reduced. Thereby, in the state in which the coil 44 is energized, the possibility that the movable contact 58 and the fixed contact 18 are in a non-contact state can be reduced.

  Moreover, the relay 5e of 6th Example is provided with the two 1st containers 20e corresponding to the two fixed terminals 10, respectively. Thereby, the pressure resistance of the first container 20e can be improved as compared with the case where one first container 20 is provided for the two fixed terminals 10. Thereby, possibility that the relay 5b will be damaged can be reduced, and the airtight space 100 can be maintained stably. Further, the fixed contact 18 and the movable contact 58 are disposed inside the first container 20 e in the airtight space 100. Thereby, the possibility that the pair of fixed terminals 10 are electrically connected due to the scattered particles of the fixed contact portion 19 and the movable contact member 50a can be further reduced by the first container 20e serving as a barrier. In the sixth embodiment, at least the fixed contact 18 may be disposed inside the first container 20e in the airtight space 100. Even in this case, it is possible to reduce the possibility of electrical conduction between the pair of fixed terminals 10 due to the scattered particles of the fixed contact portion 19 and the movable contact member 50a.

G. Other embodiments:
G-1. First embodiment:
FIG. 20 is a perspective view of the movable contact member 50a1 and related members of the first embodiment. In the second embodiment, the movable contact member 50a1 described in the first embodiment may be employed instead of the movable contact member 50a (FIG. 10). The movable contact member 50a1 includes first and second movable contacts 50a1A and 50a1B, which are separate from each other. A magnetic auxiliary member 135 is disposed in the central portion 52a. Specifically, the auxiliary member 135 is arranged so that a part of the central portion 52a is sandwiched between the support member 37a and the auxiliary member 135 in the movement direction D1.

  FIG. 21 is a diagram for explaining the effect of the first embodiment. FIG. 21 is a diagram schematically showing the positional relationship among the support member 37a, the central portion 52a, and the auxiliary member 135 in FIG. As shown in FIG. 21, when the drive mechanism 90 is in an operating state and the fixed contact 18 and the movable contact 58 come into contact with each other, a current flows through the movable contact member 50a1. Here, it is assumed that a current flows from the back side to the near side in the center portion 52a. A counterclockwise magnetic flux (magnetic field) Ba is generated around the central portion 52. Both members 37a and 135 are magnetized by the magnetic flux passing through the support member 37a and the auxiliary member 135 in the magnetic flux Ba. Thereby, both members 37a and 135 are magnetized in the direction in which they are attracted to each other. That is, a force (suction force) is generated in the direction approaching the fixed contact 18 (upward) with respect to the auxiliary member 135, and an upward force is applied to the central portion 52a to which the auxiliary member 135 is fixed. Thereby, the contact of the fixed terminal 10 and the movable contact member 50a1 can be maintained more stably. In the first embodiment, it is preferable that the thickness of the support member 37a in the movement direction D1 is larger than the thickness of the auxiliary member 135 in the movement direction D1. Since the support member 37 a is disposed closer to the fixed terminal 10 than the auxiliary member 135, the support member 37 a receives the magnetic flux from the fixed terminal 10 more strongly than the auxiliary member 135. The density is high. Therefore, the suction force can be efficiently increased by increasing the thickness of the support member 37a.

G-2. Second embodiment:
FIG. 22 is a side view of the movable contact member 50j and related members of the second embodiment. FIG. 22 shows a state in which the coil 44 is not energized, and FIG. 22 schematically shows the fixed terminal 10 for easy understanding. In the first embodiment, the movable contact member 50j of the second embodiment may be adopted instead of the configuration of the movable contact member 50 (FIG. 6). Unlike the movable contact member 50 of the first embodiment, the movable contact member 50j is a distance DA (also referred to as “inter-contact distance DA”) in the moving direction D1 between the first movable contact 50jA and the fixed terminal 10. The distance DB (also referred to as “inter-contact distance DB”) in the moving direction D1 between the second movable contact 50jB and the fixed terminal 10 is different. Specifically, the relationship of contact distance DA <contact distance DB is satisfied.

  By doing so, the first movable contact 50jA can be brought into contact with the pair of fixed terminals 10 before the second movable contact 50jB during the closing operation of the relay 5. As a result, even when an arc is generated between the second movable contact 50jB and the fixed terminal 10 due to the bounce, it is possible to suppress wear near the fixed contact 18 corresponding to the second movable contact 50jB. That is, even when a bounce occurs in the second movable contact 50jB, since the first movable contact 50jA is already electrically connected to the pair of fixed terminals 10, it is fixed to the second movable contact 50jB. The magnitude of the arc current generated between the terminals 10 can be reduced. Thereby, the consumption by the arc of the 2nd movable contact 50jB and the part which contacts the 2nd movable contact 50jB among the fixed terminals 10 can be suppressed. Thereby, even when the relay 5 is repeatedly used, a change in resistance between the pair of fixed terminals 10 in the ON state of the relay 5 can be suppressed.

  Further, even during the opening operation of the relay 5 (when the movable contacts 50jA and 50jB are separated from the fixed terminal 10), an arc may be generated between the fixed terminal 10 and the movable contacts 50jA and 50jB. Here, during the opening operation of the relay 5, the second movable contact 50jB moves away from the fixed terminal 10 before the first movable contact 50jA. At this time, since the pair of fixed terminals 10 are electrically connected by the first movable contact 50jA, the generation of an arc between the second movable contact 50jB and the fixed terminal 10 is suppressed. Can do. Thereby, even when the ON state and OFF state of the relay 5 are repeatedly used, a change in resistance between the pair of fixed terminals 10 in the ON state of the relay 5 can be suppressed.

  Here, as described above, the first movable contact 50jA is more likely to be worn out by an arc than the second movable contact 50jB. Therefore, the movable contact portion 57 including at least the movable contact 58 in the first movable contact 50jA is preferably formed of a material having higher heat resistance than the movable contact portion 57 of the second movable contact 50jB. For example, the movable contact portion 57 of the first movable contact 50jA is made of tungsten, the movable contact portion 57 of the second movable contact 50jB has a melting point lower than that of tungsten, and generally has a conductor resistance lower than that of tungsten. It is preferable to form with copper. Thus, the movable contact portions 57 of the first and second movable contacts 50jA and 50jB can be formed of different materials depending on the usage environment of the relay 5. Further, since the second movable contact 50jB with reduced arc wear can be made of copper having a conductor resistance lower than that of tungsten, it is possible to maintain the durability of the relay 5 between the pair of fixed terminals 10 by using the relay 5. An increase in resistance can be suppressed.

  As in the second embodiment, the distance between the contact points DA and DB of the first and second movable contacts 50jA and 50jB is different, and among the first and second movable contacts 50jA and 50jB, Forming the movable contact portion (in this embodiment, the movable contact portion 57), which is a portion including the movable contact 58, with a different material can be applied to other examples.

G-3. Third embodiment:
In the above embodiment, the contact pressure, which is the force applied to the fixed terminal 10 of the first movable contact 50A, 50aA, 50bA and the second movable contact 50B, 50aB, 50bB is the same or different when the relay is ON. Also good. Details and effects when the contact pressures are different will be described below.

  FIG. 23 is a diagram for explaining the third embodiment. FIG. 23 is described using the relay 5 of the first embodiment, but the present embodiment can be applied to the relays of other embodiments and other embodiments. As shown in FIG. 23, each of the movable contact portions 57XA and 57WA of the first movable contact 50A applies a contact pressure FA to the fixed terminals 10X and 10W that are in contact with each other. On the other hand, each of the movable contact portions 57XB and 57WB of the second movable contact 50B applies a contact pressure FB to the fixed terminals 10X and 10W that are in contact with each other. Here, the contact pressure FA and the contact pressure FB are different values. Specifically, the relationship of contact pressure FB> contact pressure FA is satisfied. This relationship is obtained, for example, by comparing the spring constant of the compression coil spring 62 provided corresponding to the first movable contact 50A with the spring constant of the compression coil spring 62 provided corresponding to the second movable contact 50B. This can be achieved by making it smaller.

  As described above, in the third embodiment, relays having different contact pressures with respect to the fixed terminal 10 of the first and second movable contacts 50A and 50B can be provided, and the degree of freedom in designing the relay 5 is improved. For example, in the second embodiment (FIG. 22), the contact pressure FA of the first movable contact 50jA having a small contact distance DA among the first and second movable contacts 50jA and 50jB is calculated as the contact distance DB. Is made smaller than the contact pressure FB of the second movable contact 50jB. Here, as the contact pressure increases, the contact resistance between the fixed terminal 10 and the movable contact 50 decreases. Therefore, in the relay 5, (i) a current path (second movable contact 50jB) through which the current is stably reduced by reducing the contact resistance, and (ii) when the relay 5 is turned off, it is separated from the fixed terminal 10 later. Current path (first movable contact 50jA) and current path (first movable contact 50) for reducing the possibility of wear due to arc generation in the other current path (second movable contact 50jB) 50 jA). Thereby, since the contact pressure can be reduced in the first movable contact 50jA, the force of the first spring 64 for pulling the movable contact 50 away from the fixed terminal 10 against the contact pressure can also be set small. Therefore, the suction force for pushing up the movable iron core 72 toward the fixed iron core 70 against the biasing force of the first spring 64 can also be set small. That is, the number of turns of the coil 44 can be reduced, and the relay 5 can be downsized.

H. Variations:
The present invention is not limited to the above-described examples and embodiments, and can be implemented in various forms without departing from the gist thereof. For example, the following modifications are possible.

H-1. First modification:
FIG. 24 is a diagram for explaining the first modification. In the second embodiment, of the first and second movable contacts 50aA and 50aB, the extending portion 54a has a substantially circular cross-sectional shape perpendicular to the moving direction D1 (FIGS. 10 and 11). Is not limited to this. Here, it is preferable that the cross-sectional shape orthogonal to the moving direction D1 of a portion (also referred to as “attachment portion”) inserted and attached to the central portion 52a in the extending portion 54a has a predetermined shape. The predetermined shape is a shape in which the opposing part of the pair of attachment parts forms a side 545 perpendicular to the opposing direction (Y-axis direction). For example, in the first modification, the cross-sectional shape of the attachment portion is a rectangular shape. In addition, as described in the lower left of FIG. 24, the cross-sectional shape of the attachment portion is not limited to a rectangular shape, and may be a triangular shape, for example. By so doing, current concentration at the boundary portion between the extending portion 54a1 and the central portion 52a can be alleviated, so that an increase in current density at the boundary portion can be suppressed. Thereby, generation | occurrence | production of malfunctions, such as a temperature rise of a boundary part, can be suppressed.

H-2. Second modification:
FIG. 25 is a diagram for explaining the second modification. FIG. 25 illustrates the relationship between the preferable support member 37 and the contour lines 37p and 50p of the movable contact member 50 when the relay 5 of the first embodiment is vertically projected onto a plane perpendicular to the moving direction D1. In the relay 5 of the first embodiment, the shapes of the support member 37 and the movable contact member 50 are not particularly limited. However, as shown in FIG. 25, at least a part of the outline 37p of the support member 37a is a movable contact member. It is preferable to be located outside the 50 contour lines 50p. In this way, even when the movable contact member 50 and the support member 37 are rotated about the central axis of the rod 60 (FIG. 5), the support member 37 is a member that constitutes the relay 5 (for example, the support member 37 is placed inside). The rotational movement can be suppressed by hitting the container 20, 92) to be accommodated. Further, since the rotational movement can be suppressed by applying the support member 37 instead of the movable contact member 50 to the containers 20 and 92, the possibility that the movable contact member 50, which is a member through which current flows, is damaged. Here, for example, the containers 20 and 92 correspond to “other members” described in the means for solving the problem. In addition, you may apply this modification to another Example and embodiment.

H-3. Third modification:
26 to 29 are diagrams for explaining a third modification. The relays 5 to 5 e described in the above embodiment further include protective members 95 to 95 c arranged around the compression coil spring 62 so as to surround at least a part of the compression coil spring 62 as an elastic member. Also good. The protection members 95 to 95 c suppress the arc generated between the fixed terminal 10 and the movable contact members 50, 50 a, 50 b, 50 j, and 50 a 1 from hitting the compression coil spring 62. A specific configuration of the protection members 95 to 95c will be described with reference to FIGS. Here, FIG. 26 is a diagram for explaining a first example of the third modification, FIG. 27 is a diagram for explaining a second example of the third modification, and FIG. It is a figure for demonstrating the 3rd example of a modification, and FIG. 29 is a figure for demonstrating the 4th example of a 3rd modification. Below, the specific structure of the protection members 95-95c is demonstrated using the relay 5a (FIGS. 9-12) of 2nd Example.

H-3-1. First example:
As shown in FIG. 26, the protection member 95 surrounds a part of the periphery of the compression coil spring 62. The protection member 95 is cylindrical. The protective member 95 can be formed of metal, resin, ceramic, or the like. The protection member 95 is provided corresponding to each compression coil spring 62. In the first example, four protection members 95 (only two are shown in FIG. 26) are provided. When the movable contact member 50a (specifically, the movable contact portion 57a) is press-fitted into the protection member 95, the protection member 95 is fixed (joined) to the movable contact member 50a. The protective member 95 is preferably formed of metal from the viewpoint of ease of fixing (joining) to the movable contact member 50a.

  Here, with respect to the moving direction D1, a portion of the compression coil spring 62 located closest to the movable contact 58 is referred to as a first end 97, and a portion located farthest from the movable contact 58 is referred to as a second end 98. Call. In the first example, the protection member 95 surrounds the first end side portion 99 including at least the first end 97. The first end portion 99 only needs to include at least the first end 97, but may be within a range described below. That is, when the length of the compression coil spring 62 along the moving direction D1 is set to D, the first end portion 99 has a D / 3 or more starting from the first end 97 in the OFF state of the relay 5a. The range is preferably a range up to a point where the position is located, and more preferably a range up to a point located at D / 2 or more starting from the first end 97. In this way, a larger portion of the compression coil spring 62 can be surrounded by the protective member 95, and the possibility that the arc hits the compression coil spring 62 can be further reduced. Further, the upper limit of the length of the protective member 95 along the moving direction D1 is preferably set to a length that does not hinder the opening / closing operation of the contacts 18, 58. By doing so, it is possible to surround a larger portion of the compression coil spring 62 by the protection member 95 while preventing the opening / closing operation of the contacts 18 and 58 from being hindered. In this example, the first end portion 97 corresponds to one end portion of the compression coil spring 62, and the second end portion 98 corresponds to the other end portion of the compression coil spring 62.

  When the relay 5a is switched from the ON state to the OFF state, an arc may occur between the fixed terminal 10 and the movable contact member 50a. The generated arc may hit the compression coil spring 62. For example, the following cases may occur. The generated arc is stretched by the permanent magnet 800. In the process in which the arc is stretched, the arc has a characteristic of moving on the surface of the movable contact member 50a. When the arc moves on the surface of the movable contact member 50a, the arc hits the compression coil spring 62. However, since the relay 5 a includes the protection member 95, the possibility that the generated arc hits the compression coil spring 62 can be reduced. Thereby, possibility that the compression coil spring 62 will be damaged by an arc can be reduced. By reducing the possibility of damage to the compression coil spring 62, the occurrence of malfunction of the relay 5a can be reduced. In the first example, the protective member 95 surrounds the first end side portion 99 of the compression coil spring 62. Accordingly, it is possible to reduce the possibility that the arc hits the first end side portion 99 including the first end 97 in which the arc is most likely to reach among the compression coil springs 62. In the first example, the movable contact member 50a is press-fitted into the protection member 95, so that the relative positions of the protection member 95 and the movable contact member 50a are fixed. Thereby, the position of the protection member 95 with respect to the movable contact member 50a can be fixed, and the possibility that the protection member 95 deviates from the designed position can be reduced.

  In the first example, it is preferable that the inner diameter of the protection member 95 is equal to the diameter of the movable contact portion 57a. By doing so, a sufficient space in the airtight space 100 for extending the arc can be secured.

H-3-2. Second example:
As shown in FIG. 27, in the second example, the protection member 95a is formed integrally with the movable contact member 50a. For example, the protection member 95a and the movable contact member 50a are integrally formed using the same raw material. The protection member 95a extends downward (in the negative direction of the Z axis, the direction away from the fixed terminal 10) from the movable contact portion 57a. Further, the protection member 95 a surrounds a part of the periphery of the compression coil spring 62.

  As described above, the second example has the same effect as the first example in that it has the same configuration as the first example. For example, by surrounding at least a part of the compression coil spring 62 with the protective member 95, the possibility that the arc hits the compression coil spring 62 can be reduced. Further, since the protective member 95a is formed integrally with the movable contact member 50a, the possibility that the protective member 95a is displaced from the designed position can be further reduced.

H-3-3. Third example:
As shown in FIG. 28, in the third example, a part of the protective member 95 b is pressed against the support member 37 a by the compression coil spring 62. That is, the protection member 95a is sandwiched between the compression coil spring 62 and the support member 37a. The protection member 95 a has a bottomed cylindrical shape, and the compression coil spring 62 is in contact with the bottom portion 93. The protection member 95a surrounds the entire periphery of the compression coil spring 62.

  As described above, the third example has the same effect as the first example in that it has the same configuration as the first example. For example, by surrounding the compression coil spring 62 with the protective member 95b, the possibility that the arc hits the compression coil spring 62 can be reduced. In the third example, the protection member 95 b is pressed against the support member 37 a by the compression coil spring 62. Thereby, the position of the protection member 95b can be fixed using the structural member of the relay 5a, without using the special member for preventing the position shift of the protection member 95b. Furthermore, in the third example, the upper side (Z-axis positive direction side) of the protective member 95b is opened. Thereby, even when the support member 37a moves in the movement direction D1 independently of the movable contact member 50a, the protection member 95b can be prevented from hitting the movable contact portion 57a. Thereby, the freedom degree of design of the protection member 95b can be increased. For example, the entire periphery of the compression coil spring 62 can be surrounded by the protection member 95b, and the possibility that the arc hits the compression coil spring 62 can be further reduced.

H-3-4. Fourth example:
As shown in FIG. 29, in the fourth example, a part of the protective member 95c is pressed against the movable contact member 50a (specifically, the movable contact portion 57a) by the compression coil spring 62. That is, the protection member 95c is sandwiched between the compression coil spring 62 and the movable contact member 50a. The protection member 95 c has a bottomed cylindrical shape, and the compression coil spring 62 is in contact with the bottom portion 93. Similar to the first and second examples, the protection member 95 c surrounds a part of the periphery of the compression coil spring 62.

  In the fourth example, the same effects as those in the first example are obtained in that the same configuration as that in the first example is provided. For example, by surrounding the compression coil spring 62 with the protection member 95c, the possibility that an arc hits the compression coil spring 62 can be reduced. In the fourth example, the protective member 95 c is pressed against the movable contact member 50 a by the compression coil spring 62. Thereby, the position of the protection member 95c can be fixed using the structural member of the relay 5a, without using the special member for preventing the position shift of the protection member 95c.

H-4. Fourth modification:
In the above-described example and embodiment, the movable contact member 50 is formed by the separate first and second movable contacts 50A and 50B, but a plurality of movable contact portions 57, If it is the structure which has 57a, you may form the movable contact member 50 integrally.

H-5. Fifth modification:
In the above-described examples and embodiments, two movable contact portions 57 and 57a are formed for each fixed terminal 10, but three or more movable contact portions 57 and 57a may be formed. By forming three or more movable contact portions 57, 57a for one fixed terminal 10, the current flowing between the fixed terminal 10 and the movable contact portions 57, 57a or in the vicinity of each contact can be further reduced. As a result, the electromagnetic repulsive force can be further reduced, and the possibility that the movable contact and the stationary contact are in a non-contact state can be further reduced when the drive mechanism is operating (relay ON state). For example, when three movable contact portions 57 and 57a are formed for one fixed terminal 10, a third movable contact may be provided in addition to the first and second movable contacts 50A and 50B. The third movable contact may have the same configuration as the first and second movable contacts 50A and 50B.

H-6. Sixth modification:
In the above examples and embodiments, the number of fixed terminals 10 electrically connected by the movable contact member 50 is two, but may be three or more. For example, when there are three fixed terminals 10, the number of input terminals 10W can be two and the number of output terminals 10X can be one.

H-7. Seventh modification:
In the above embodiment, the compression coil spring 62 is used as the elastic member. However, any member other than the compression coil spring can be used as long as it is a member that can be elastically deformed in the moving direction D1. For example, various spring members such as a disc spring and a leaf spring, or a member such as rubber can be employed. Even if it does in this way, there exists an effect similar to the said Example and embodiment.

H-8. Eighth modification:
In the first example of the third modified example, the movable contact member 50a is press-fitted into the protective member 95, so that the protective member 95 is fixed to the movable contact member 50a. It is not limited to. For example, the protective member 95 may be fixed to the movable contact member 50a by welding to the movable contact member 50a.

5-5e ... Relay 6-6e ... Relay body 10 ... Fixed terminal 10W ... Positive fixed terminal (input terminal)
10X: Negative fixed terminal (output terminal)
DESCRIPTION OF SYMBOLS 18 ... Fixed contact 19 ... Fixed contact part 20, 20e ... 1st container 33 ... Groove 37, 37a, 37c ... Support member 37p ... Contour line 50, 50a, 50b, 50j, 50a1 ... Movable contact member 50a1A, 50A, 50aA , 50bA, 50jA ... First movable contact (single path member)
50a2B, 50B, 50aB, 50bB, 50jB ... 2nd movable contact (single path member)
DESCRIPTION OF SYMBOLS 51 ... Groove 52 ... Contact body 52a, 52aA ... Center part 54a, 54a1, 54aWA ... Extension | extension part 57, 57a ... Movable contact part 58 ... Movable contact 60 ... Rod 62 ... Compression coil spring 64 ... First spring 90 ... Drive Mechanism 92 ... Second container 93 ... Bottom 95-95c ... Protective member 97 ... First end 98 ... Second end 99 ... First end side portion 100 ... Airtight space 130 ... Bar member 135 ... Auxiliary member 160 ... Adjusting member 164 ... Mounting member 545 ... Side 800 ... Permanent magnet D1 ... Moving direction DA, DB ... Contact distance jA ... First movable contact FA ... Contact pressure FB ... Contact pressure Ba ... Magnetic flux Fp ... Lorentz force (attraction force) )

Claims (18)

A plurality of fixed terminals each having a fixed contact;
The plurality of fixed terminals are respectively inserted, and a container in which the plurality of fixed terminals are attached to form an airtight space therein,
A movable contact member that contacts the plurality of fixed terminals in the airtight space and electrically connects the plurality of fixed terminals;
A drive mechanism for moving the movable contact member to bring the movable contact member into contact with the plurality of fixed terminals;
An elastic member for biasing the movable contact member toward the plurality of fixed terminals,
The movable contact member is
The relay having two or more movable contact portions including a movable contact that is a portion in contact with the fixed terminal for each fixed terminal. The relay according to claim 1,
The movable contact member is
A plurality of movable contacts that contact the plurality of fixed terminals and electrically connect the plurality of fixed terminals;
Each said movable contact has the said movable contact part which contacts with respect to each of each said fixed terminal, The relay characterized by the above-mentioned. The relay according to claim 2,
The distance in the moving direction in which the movable contact member moves between the movable contact portion of the movable contact and the fixed terminal in contact with the movable contact portion when the drive mechanism is not operating. When the distance between contacts is
The relay according to claim 1, wherein the distance between the contacts is different between at least one of the plurality of movable contacts and the other movable contact. The relay according to claim 2 or claim 3,
When the drive mechanism is in operation and the fixed terminal and the movable contact member are in contact with each other, each of the plurality of movable contacts is in contact with a portion of the plurality of fixed terminals that are in contact with each other. When the applied force is contact pressure,
The relay according to claim 1, wherein the contact pressure is different between at least one of the plurality of movable contacts and the other movable contact. The relay according to any one of claims 2 to 4,
The relay, wherein the movable contact portion of at least one of the plurality of movable contacts and the movable contact portion of another movable contact are formed of different materials. . The relay according to any one of claims 1 to 5, further comprising:
The said elastic member is provided corresponding to each of the said several movable contact part, The relay characterized by the above-mentioned. The relay according to claim 6,
The movable contact member has a single path member that electrically connects the plurality of fixed terminals by a single current path,
When the driving mechanism is operated and the fixed terminal and the movable contact member are in contact with each other, the plurality of movable contact portions provided corresponding to the plurality of movable contact portions of the single path member Each of the elastic members biases the single path member toward the fixed terminal by a force of the same degree. The relay according to any one of claims 1 to 7, further comprising:
A support member that moves in accordance with the movement of the movable contact in a plane perpendicular to the moving direction in which the movable contact member moves, and that moves independently of the movement of the movable contact member in the moving direction;
The relay is characterized in that the elastic member has one end in the moving direction in contact with the movable contact member and the other end in the moving direction in contact with the support member. The relay according to claim 8,
The movable contact member is
A central portion extending in an arrangement direction in which the plurality of fixed terminals are arranged, and a direction perpendicular to the moving direction;
Extending from the central portion toward the fixed terminal along the moving direction, and having an extending portion having the movable contact portion at an end,
At least a part of the extending portion is disposed inside the elastic member. The relay according to claim 9,
A part of the movable contact member is located on a side opposite to the movable contact portion across the support member. The relay according to claim 10,
The relay, wherein the support member is a magnetic body. The relay according to any one of claims 8 to 11,
When the relay is vertically projected on a plane perpendicular to the moving direction,
The vertically projected contour of the support member has an outer portion located outside the vertically projected contour of the movable contact member;
The relay further includes a regulating portion that abuts on the outer portion and regulates the movement of the support member in the plane. The relay according to any one of claims 1 to 12,
The movable contact member is
A relay comprising: a holding mechanism that holds the elastic member and suppresses displacement of the elastic member in a direction orthogonal to a moving direction of the movable contact member with respect to the movable contact member. The relay according to any one of claims 1 to 13,
The relay, wherein the elastic member is a compression coil spring. The relay according to any one of claims 1 to 14,
The container is
A plurality of first containers provided corresponding to the respective fixed terminals, and through which the corresponding fixed terminals are inserted;
A second container joined to the plurality of first containers,
Each said fixed contact which each said fixed terminal has is accommodated in the said corresponding 1st container, The relay characterized by the above-mentioned. The relay according to any one of claims 1 to 15, further comprising:
A relay comprising: a protective member disposed around the elastic member so as to surround at least a part of the elastic member. The relay according to claim 16,
The relay, wherein the movable contact member is press-fitted into the protective member, whereby the protective member is fixed to the movable contact member. The relay according to claim 16,
The relay is characterized in that a part of the protective member is pressed against another member constituting the relay by the elastic member.

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