JP2015130260A - relay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress generation of sound at the time of contact collision while suppressing complication of the structure of a device.SOLUTION: A relay including two conductive fixed terminals each having a fixed contact, a conductive movable contact having two movable contacts corresponding to the fixed contacts, a member for drive that switches between a state where each movable contact comes into contact with a corresponding fixed contact and a state not come into contact, by moving movable contact, and a first container for supporting two fixed terminals, is further provided with a damping member that is in contact with at least one of the fixed terminal and movable contact.

Description

  The present invention relates to a relay.

  For example, in an electric power system used for a hybrid vehicle or an electric vehicle, the DC power source (storage battery) and a motor (and a power converter) are switched between an on state in which the DC power source (storage battery) and the motor (and power converter) are electrically connected and an off state in which the DC power source is not connected. A relay is used. As such a relay, for example, two conductive fixed terminals each having a fixed contact, a conductive movable contact having two movable contacts corresponding to each fixed contact, and a movable contact are moved. A structure including a driving member that switches between an on state in which each movable contact is in contact with a corresponding fixed contact and an off state in which it is not in contact, and a container that supports two fixed terminals is used. The relay is also called a contactor or a relay.

  In the relay having the above configuration, when switching from the off state to the on state, the fixed terminal (fixed contact) and the movable contact (movable contact) collide, and sound is generated. 2. Description of the Related Art Conventionally, a technique is known in which a structure in which a fixed terminal is elastically deformed at the time of a collision between a fixed terminal and a movable contact is provided, thereby suppressing an impact at the time of collision and suppressing generation of sound (see, for example, Patent Document 1). ).

JP 2012-199087 A

  In the above conventional technique, it is necessary to provide a structure in which the fixed terminal is elastically deformed, and there is a problem that the structure of the apparatus becomes complicated.

  The present invention has been made to solve the above-described problems, and can be realized as the following forms.

(1) According to one aspect of the present invention, two conductive fixed terminals each having a fixed contact, a conductive movable contact having two movable contacts corresponding to each of the fixed contacts, and the movable A relay comprising: a driving member that moves a contact to switch between a state in which each movable contact is in contact with the corresponding fixed contact and a state in which the movable contact is not in contact; and a first container that supports the two fixed terminals. Provided. The relay includes a damping member that is in contact with at least one of the fixed terminal and the movable contact. According to the relay of this form, it is possible to suppress the transmission of vibration generated by an impact caused by the collision between the fixed terminal (fixed contact) and the movable contact (movable contact) by the damping effect of the damping member. Therefore, generation | occurrence | production of the sound at the time of a contact collision can be suppressed, suppressing complication of an apparatus structure.

(2) In the relay of the above aspect, the damping member may be a damping member made of a damping alloy. According to this form of relay, by using a damping member made of a damping alloy that has high heat resistance and can be processed into a relatively complicated shape, the durability of the damping member is improved, and the device design While improving the degree of freedom, it is possible to suppress the generation of sound at the time of contact collision.

(3) In the relay according to the above aspect, the damping member may be disposed between the fixed terminal and the first container. According to the relay of this form, generation | occurrence | production of the sound at the time of a contact collision can be suppressed, without accompanying the increase in the conductor resistance of a fixed terminal by providing a damping member.

(4) In the relay of the above aspect, the fixed terminal includes a flange portion joined to the first container, and a main body portion located on the fixed contact side from the flange portion,
At least a part of the vibration damping member may be attached to the main body of the fixed terminal. According to this form of relay, since the damping member is attached to the main body, which is a portion close to the fixed contact in the fixed terminal, the position of the damping member can be brought close to the collision position between the contacts, and sound is generated. Can be more effectively suppressed.

(5) In the relay according to the above aspect, the damping member may be attached to the movable contact. According to this form of relay, since the damping member is attached to the movable contact, the position of the damping member can be brought close to the collision position between the contacts, and the generation of sound can be more effectively suppressed. it can.

(6) In the relay of the above aspect, the vibration damping member may be a magnetic body. According to the relay of this form, it is possible to generate an attracting force in a direction in which the movable contact approaches the fixed contact with respect to the current flowing through the movable contact in the ON state of the relay, and the contact pressure between the movable contact and the fixed contact. Generation | occurrence | production of a fall and the separation of a movable contact and a fixed contact can be suppressed.

(7) The relay according to the above aspect may further include another magnetic member disposed on the first direction side in which the movable contact approaches the fixed contact from the movable contact. According to the relay of this form, even if the center of gravity of the movable contactor is located on the first direction side from the center of gravity of the damping member, the damping member and the other magnetic body member are in the direction in which they are attracted to each other. A force in the first direction is applied to the movable contact that is magnetized and fixed to the vibration damping member, causing a decrease in contact pressure between the movable contact and the fixed contact and a separation between the movable contact and the fixed contact. Can be suppressed.

  In addition, this invention can be implement | achieved in various aspects, for example, can be implement | achieved in aspects, such as a moving body, such as a relay provided with the relay, the manufacturing method of a relay, a relay, and a ship.

It is explanatory drawing which shows roughly the structure of the electric power system 1 in 1st Embodiment of this invention. It is explanatory drawing which shows the structure of the relay 5 in 1st Embodiment. It is explanatory drawing which shows the structure of the relay 5 in 1st Embodiment. It is explanatory drawing which shows the structure of the relay 5 in 1st Embodiment. It is explanatory drawing which shows the structure of the relay 5 in 1st Embodiment. FIG. 4 is an explanatory view showing a configuration of a joint portion between the flange portion 13 of the fixed terminal 10 and the bottom portion 24 of the first container 20. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 1st Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 1st Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 1st Embodiment. It is explanatory drawing which shows the structure of the fixed terminal 10 and movable contact 50 vicinity in 2nd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 2nd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 2nd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 2nd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 2nd Embodiment. It is explanatory drawing which shows the structure of the fixed terminal 10 and movable contact 50 vicinity in 3rd Embodiment. It is a figure for demonstrating the effect of the damping member 140 in 3rd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 3rd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 3rd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 3rd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 3rd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 3rd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 3rd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 3rd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 3rd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 3rd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 3rd Embodiment. It is explanatory drawing which shows the structure of the damping member 140 in the modification of 3rd Embodiment.

A. First embodiment:
A-1. Power system configuration:
FIG. 1 is an explanatory diagram schematically showing the configuration of a power system (electric circuit) 1 according to the first embodiment of the present invention. The power system 1 is mounted on a vehicle such as a hybrid vehicle or an electric vehicle. The power system 1 includes a storage battery 2 as a DC power source, a motor 4 that drives a driving wheel of a vehicle, and a power conversion device 3 that is interposed between the storage battery 2 and the motor 4. The power conversion device 3 functions as an inverter and a converter. When power for driving is supplied from the storage battery 2 to the motor 4 (when the storage battery 2 is discharged), three-phase AC power converted by the power conversion device 3 is supplied to the motor 4. Further, when the storage battery 2 is charged with the energy regenerated by the motor 4, the DC power converted by the power converter 3 is stored in the storage battery 2.

  The electric power system 1 also includes two relays 5 for switching between an on state in which the storage battery 2 and the motor 4 (and the power conversion device 3, and so on) are electrically connected and an off state in which the storage battery 2 and the motor 4 are not connected. . One of the two relays 5 is disposed between the positive terminal of the storage battery 2 and the motor 4, and the other is disposed between the negative terminal of the storage battery 2 and the motor 4. The relay 5 performs on / off control of energization with a large direct current (for example, several tens to several hundreds of amperes). For example, when an abnormality occurs in the vehicle, the electrical connection between the storage battery 2 and the motor 4 is interrupted by the relay 5.

A-2. About relay 5:
A-2-1. Overall configuration of relay 5:
2-5 is explanatory drawing which shows the structure of the relay 5 in 1st Embodiment. 2 is an external perspective view of the relay 5, FIG. 3 is a top external view of the relay 5, and FIG. 5 is a cross-sectional perspective view of the relay 5 (A-A position cross-sectional perspective view of FIG. 3). In each figure, XYZ axes orthogonal to each other are shown to specify directions. Hereinafter, for convenience, the Z-axis positive direction (the direction in which a movable contact 58 of the movable contact 50 described later approaches the fixed contact 18 of the fixed terminal 10) is referred to as an upward direction, and the negative Z-axis direction is referred to as a downward direction. The upward direction corresponds to the first direction in the claims. Depending on the installation posture of the relay 5, the direction corresponding to each axis may change. 4 and 5, the relay 5 is in an off state.

  As shown in FIGS. 2 and 3, the relay 5 includes a relay main body 6 and a pair of permanent magnets 800 disposed so as to sandwich the relay main body 6 (more specifically, a fixed contact 18 and a movable contact 58 described later). Is provided. The relay main body 6 is accommodated in a resin case (not shown).

  As shown in FIGS. 2 to 5, the relay main body 6 includes a pair of fixed terminals 10, a movable contact 50, a drive mechanism 90, a first container 20, a joining member 30, a base portion 32, An iron core container 80. In the present specification, the joining member 30, the base portion 32, and the iron core container 80 are collectively referred to as a second container 92.

  The fixed terminal 10 is a member having a substantially cylindrical main body portion 14 having a bottom portion, and a flange portion 13 having a larger diameter than the main body portion 14 formed on the upper side (Z-axis positive direction side) of the main body portion 14. It is made of a conductive material (for example, a metal material containing copper). The fixed terminal 10 is disposed so that the central axis is in the Z-axis direction and the bottom is positioned on the lower side (Z-axis negative direction side). In the present embodiment, the direction connecting the central axes of the pair of fixed terminals 10 is the Y-axis direction. Fixed terminal 10 has connection port 12 for connecting each wiring of electric power system 1 (Drawing 1). The connection port 12 is formed from the flange portion 13 side to the main body portion 14. Hereinafter, of the pair of fixed terminals 10, the side into which current flows when current is supplied from the storage battery 2 to the motor 4 is also referred to as a positive fixed terminal 10 </ b> W, and the side from which current flows out is also referred to as a negative fixed terminal 10 </ b> X. The fixed terminal 10 has a fixed contact portion 19 disposed below the bottom portion of the main body portion 14. The fixed contact portion 19 may be formed of the same material as the other portions of the fixed terminal 10, or is formed of a material having higher heat resistance (for example, tungsten) in order to more effectively suppress damage caused by the arc. It may be. A fixed contact 18 is formed on an end face (lower end face) of the fixed contact portion 19 on the side facing the movable contact 50. The main body 14 is positioned closer to the fixed contact 18 than the flange 13.

  The first container 20 is a box-shaped member having a bottom, and is a member having excellent heat resistance formed of an insulating material (for example, ceramic such as alumina or zirconia). More specifically, the first container 20 includes a bottom part 24 positioned on the upper side and a side part 22 that forms a side surface (a surface substantially parallel to the Z-axis direction) of the first container 20. The side (namely, lower side) facing the bottom 24 in the first container 20 is open. Two through holes 26 into which the two fixed terminals 10 are inserted are formed in the bottom 24 of the first container 20. In a state where the fixed terminal 10 is inserted into the through hole 26 of the first container 20, the flange portion 13 of each fixed terminal 10 is airtightly bonded to the outer surface (upper surface) of the bottom 24 of the first container 20. Has been. The configuration of the joint portion between the flange portion 13 of the fixed terminal 10 and the bottom portion 24 of the first container 20 will be described in detail later.

  The joining member 30 is a substantially annular member having openings at the lower end and the upper end, and is formed of, for example, a metal material. The base portion 32 is a substantially rectangular member, and is formed of a metal magnetic material such as iron. A through hole 32 h into which a rod 60 described later is inserted is formed at the approximate center of the base portion 32. The upper end portion (edge portion around the opening) of the joining member 30 is airtightly joined to the lower end portion (edge portion around the opening) of the first container 20 by brazing. This joint portion is referred to as a joint portion 35. The upper end portion (edge portion around the opening) of the joining member 30 is airtightly joined to the lower end portion (edge portion around the opening) 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. Note that 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 positive direction). By doing so, the joining member 30 as a whole can be easily elastically deformed along the Z-axis direction, and the stress generated by the thermal expansion difference between the joining member 30 and the first container 20 is relieved.

  The iron core container 80 is a cylindrical member having a bottom at the lower end and an opening at the upper end, and is formed of a nonmagnetic material. The upper end portion of the iron core container 80 is airtightly joined to the periphery of the through hole 32h of the base portion 32 by laser welding or the like over the entire circumference.

  In this way, the above-described members (the fixed terminal 10, the first container 20, the joining member 30, the base portion 32, and the iron core container 80) are joined to each other in an airtight manner, thereby being fixed inside the relay main body 6. An airtight space 100 in which the fixed contact portion 19 (fixed contact 18) of the terminal 10 and the movable contact 50 are accommodated is formed. In the airtight space 100, for example, hydrogen or a gas mainly composed of hydrogen is at atmospheric pressure or higher in order to suppress heat generation of the stationary contact portion 19 and the movable contact 50 due to arc generation and to improve arc extinguishing performance. (For example, 2 atm). That is, after joining the above-described members, the inside of the hermetic space 100 is evacuated through the vent pipe 69 that connects the inside and the outside of the hermetic space 100, and then hydrogen is introduced into the hermetic space 100 through the vent pipe 69. The gas is sealed until a predetermined pressure is reached. After the gas such as hydrogen is sealed at a predetermined pressure, the ventilation pipe 69 is crimped so that the gas such as hydrogen does not leak out from the airtight space 100.

  The movable contact 50 is a substantially flat plate-like member, and is formed of a conductive material (for example, a metal material containing copper). The movable contact 50 includes a central portion 52 in which a through hole 53 into which the rod 60 is inserted is formed, and a movable contact portion that extends from the central portion 52 in a facing direction (Y-axis direction) in which the pair of fixed terminals 10W and 10X face each other. 56. A movable contact 58 is formed at a portion of the movable contact portion 56 facing the fixed contact portion 19 of the fixed terminal 10. More specifically, the movable contact 58 is a portion of the movable contact portion 56 that comes into contact with the fixed terminal 10 when the movable contact 50 moves upward.

  The drive mechanism 90 moves the movable contact 50 in the vertical direction (Z-axis direction) to switch between the energized state and the non-energized state of the relay 5. The drive mechanism 90 includes the rod 60, the base portion 32, the fixed iron core 70, the movable iron core 72, the iron core container 80, the coil 44, the coil bobbin 42, the coil container 40, and the second spring 64. Have 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 bottomed cylindrical shape as described above, and a rubber 86 is disposed at 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 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 second spring 64 is disposed between the movable iron core 72 and the fixed iron core 70 and biases the fixed iron core 70 and the movable iron core 72 in directions away from each other.

  The rod 60 is a nonmagnetic material. The rod 60 has a columnar shaft portion 60a, a disc-shaped one end portion 60b provided at the upper end of the shaft portion 60a, and an arc-shaped other end portion 60c provided at the lower end of the shaft portion 60a. The shaft portion 60a is inserted through the movable contact 50 so as to be movable in the vertical direction (moving direction of the movable contact 50). The one end portion 60 b is disposed on the upper surface (side facing the fixed terminal 10) of the central portion 52 in a state where no current is passed through the coil 44. The other end 60c is attached to the movable iron core 72 by welding or the like. The one end portion 60b restricts the movable contact 50 from moving toward the fixed terminal 10 when the drive mechanism 90 is not operating.

  An attachment member 67 for arranging the first spring 62 is arranged on the shaft portion 60a. One end of the first spring 62 is in contact with the mounting member 67 and the other end is in contact with the movable contact 50. The first spring 62 urges the movable contact 50 in the direction in which the movable contact 58 and the fixed contact 18 approach (Z-axis positive direction, upward direction).

  In the airtight space 100, a case member 110 and a case holding member 120 are provided. The case member 110 insulates between the arc generated between the fixed contact 18 and the movable contact 50 and the joint 35 and protects the joint 35 from the arc. The case member 110 is formed of an insulating material such as nylon, polyethylene terephthalate (PET), or ceramics, and is disposed on the upper surface of the base portion 32. The case holding member 120 holds and fixes the case member 110 by sandwiching the case member 110 between the case holding member 120 and the base portion 32. The case holding member 120 is made of a material such as iron, stainless steel, a magnetic material, or a resin. The case holding member 120 may be integrally formed with the case member 110 using, for example, a resin material.

A-2-2. Operation of relay 5:
When the coil 44 is energized, 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 second 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. Thereby, the one end part 60b of the rod 60 also moves upward. As a result, the restriction on the movement of the movable contact 50 is released, and the movable contact 50 moves upward (in the direction approaching the fixed contact 18) by the biasing force of the first spring 62. Thereby, each fixed contact 18 and each corresponding movable contact 58 come into contact, and the two fixed terminals 10 are conducted through the movable contact 50 (conducting state of the relay 5).

  On the other hand, when the energization of the coil 44 is interrupted, the movable iron core 72 moves downward so as to be separated from the fixed iron core 70 mainly by the urging force of the second spring 64. Accordingly, the movable contact 50 is pushed downward (in a direction away from the fixed contact 18) by being pushed by the one end 60b of the rod 60. Therefore, each movable contact 58 is separated from each fixed contact 18, and conduction between the two fixed terminals 10 is interrupted (non-conducting state of the relay 5).

  As described above, when the coil 44 is energized, the movable contact 50 moves to conduct between the two fixed terminals 10. When the coil 44 is de-energized, the movable contact 50 returns to the original position. The two fixed terminals 10 are non-conductive. Here, when the movable contact 58 moves away from the fixed contact 18, an arc may occur between the contacts 18 and 58. The generated arc is suppressed from reaching the joint 35 by the case member 110. The arc is stretched in the Y-axis direction (the direction connecting the central axes of the fixed terminals 10) by the permanent magnet 800 (see FIGS. 2 and 3), and arc extinction is promoted.

A-2-3. Configuration of the joint portion between the flange portion 13 of the fixed terminal 10 and the bottom portion 24 of the first container 20:
FIG. 6 is an explanatory diagram illustrating a configuration of a joint portion between the flange portion 13 of the fixed terminal 10 and the bottom portion 24 of the first container 20. In FIG. 6 (and subsequent drawings), illustrations of portions having little relation to the configuration of the present invention are omitted as appropriate. As shown in FIG. 6, the joint between the flange portion 13 of the fixed terminal 10 and the bottom portion 24 of the first container 20 is caused by a difference in thermal expansion due to the difference in material between the fixed terminal 10 and the first container 20. A diaphragm portion 17 is provided for relieving the stress of the portion and suppressing breakage of the joint portion. In the present embodiment, the diaphragm portion 17 is formed of a low thermal expansion material (for example, an alloy such as Kovar or 42 alloy) having a thermal expansion coefficient relatively close to that 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, and a lower end (end on the Z-axis negative direction side) is joined to an outer surface (upper surface) of the bottom portion 24 of the first container 20 by, for example, brazing. Has been.

Further, a damping member 140 made of a damping alloy is provided between the flange portion 13 of the fixed terminal 10 and the diaphragm portion 17 provided on the bottom portion 24 of the first container 20. The damping alloy absorbs vibration by converting vibration energy into heat energy inside the alloy. There are mainly the following four types of damping alloys. The vibration damping member 140 of this embodiment is formed of any one of the following four types of vibration damping alloys.
(1) Damping alloys (such as Fe-Al, Fe-Cr-Al, Fe-Cr, etc.) that absorb vibration at the domain wall (boundary of the magnetic domain), called the ferromagnetic type
(2) Damping alloys called twins that absorb vibrations due to the movement of twins formed by martensitic transformation (for example, shape memory alloys Ni-Ti, Mn-Cu-Ni-Fe, etc.)
(3) Damping alloys that absorb vibration by the movement of metal crystal transitions (Mg-Zr, Mg-Cu, etc.)
(4) Damping alloys (Fe-C-Si, Al-Zn, etc.) that absorb vibration by viscous flow near the interface between the matrix and second phase, called composite type

  The damping member 140 is a cylindrical member having substantially the same diameter as the diaphragm portion 17. The upper end (end on the Z axis positive direction side) of the damping member 140 is joined to the outer surface (lower surface) of the flange portion 13 of the fixed terminal 10 by, for example, brazing, and the lower end (Z axis negative) of the damping member 140 is joined. The end on the direction side) is joined to the upper end of the diaphragm portion 17 by, for example, brazing. The flange portion 13 of the fixed terminal 10 is joined to the upper surface of the bottom portion 24 of the first container 20 via the vibration damping member 140 and the diaphragm portion 17. The damping member 140 may be joined to the fixed terminal 10 and the diaphragm portion 17 by other joining methods such as welding or press fitting. In addition, depending on the type of the damping alloy, the damping characteristic may be deteriorated when a high temperature is applied. Therefore, when joining is performed by brazing, it is preferable to use a low melting point brazing material.

  As described above, in this embodiment, since the damping member 140 made of damping alloy is attached to the fixed terminal 10, the fixed terminal 10 (fixed contact 18) and the movable contact 50 (movable contact 58) Transmission of vibrations generated by the impact caused by the collision of the vibration can be suppressed by the damping effect of the damping member 140, and the generation of sound at the time of contact collision can be suppressed while suppressing the complexity of the device configuration. In particular, in the present embodiment, since the damping member 140 is disposed between the fixed terminal 10 (more specifically, the flange portion 13) and the first container 20, fixing by providing the damping member 140 is performed. Generation of sound at the time of contact collision can be suppressed without increasing the conductor resistance of the terminal 10. Moreover, in this embodiment, the damping member 140 can be made into a simple shape (annular), and facilitation of part processing can be realized.

A-2-4. Modification of the first embodiment:
FIG. 7 thru | or FIG. 9 is explanatory drawing which shows the structure of the damping member 140 in the modification of 1st Embodiment. 7 to 9 show only the configuration around one fixed terminal 10, the configuration around the other fixed terminal 10 is the same.

  In the first modification of the first embodiment shown in FIG. 7, the damping member 140 has a bent portion, and the diameter of the upper portion (the portion on the Z-axis positive direction side) from the bent portion is the diameter of the diaphragm portion 17. 6 is different from the first embodiment shown in FIG. 6 in that the diameter of the lower portion of the bent portion is smaller than the diameter of the diaphragm portion 17, and the other configuration is the first embodiment. It is the same as the form. The diaphragm portion 17 is joined to the surface of the vibration damping member 140 so as to surround the lower portion of the vibration damping member 140. According to this modification, as in the first embodiment described above, the damping effect of the damping member 140 can suppress the generation of sound at the time of contact collision, and the fixed terminal by providing the damping member 140 The generation of sound at the time of contact collision can be suppressed without increasing the conductor resistance of 10. Moreover, according to this modification, since the relative positioning of the diaphragm part 17 and the vibration damping member 140 is facilitated, it is possible to facilitate the assembly of the parts. In addition, according to this modification, the volume of the damping member 140 can be easily increased as compared with the first embodiment, so that the damping effect of the damping member 140 is increased and the generation of sound is further increased. It can be effectively suppressed.

  In the second modification of the first embodiment shown in FIG. 8, the damping member 140 has a bent portion, and the diameter of the upper portion (the portion on the Z-axis positive direction side) from the bent portion is the flange of the fixed terminal 10. It is different from the first embodiment shown in FIG. 6 in that the diameter of the portion 13 is larger than the diameter of the portion 13 and the diameter of the lower portion of the bent portion is smaller than the diameter of the diaphragm portion 17. It is the same as the form. The diaphragm portion 17 is joined to the surface of the vibration damping member 140 so as to surround the lower portion of the vibration damping member 140. Further, the upper portion of the vibration damping member 140 is joined to the outer surface of the flange portion 13 of the fixed terminal 10 so as to surround the flange portion 13 of the fixed terminal 10. According to this modification, as in the first embodiment described above, the damping effect of the damping member 140 can suppress the generation of sound at the time of contact collision, and the fixed terminal by providing the damping member 140 The generation of sound at the time of contact collision can be suppressed without increasing the conductor resistance of 10. Moreover, according to this modification, since the relative positioning of the diaphragm part 17 and the vibration damping member 140 is facilitated, it is possible to facilitate the assembly of the parts. Further, according to this modification, the volume of the damping member 140 can be easily increased as compared with the first embodiment and the first modification shown in FIG. Since the contact area between the fixed member 10 and the fixed terminal 10 can be increased, the damping effect of the damping member 140 can be further increased and the generation of sound can be more effectively suppressed.

  The third modification of the first embodiment shown in FIG. 9A is shown in FIG. 6 in that the diaphragm portion 17 is not provided and the vibration damping member 140 also functions as the diaphragm portion 17. It is different from the first embodiment, and other configurations are the same as those of the first embodiment. In this modification, the damping member 140 is formed of a material having a coefficient of thermal expansion that is relatively close to that of the first container 20, so that the damping member 140 can also function as the diaphragm portion 17. According to this modification, as in the first embodiment described above, the damping effect of the damping member 140 can suppress the generation of sound at the time of contact collision, and the fixed terminal by providing the damping member 140 The generation of sound at the time of contact collision can be suppressed without increasing the conductor resistance of 10. Moreover, according to this modification, since it is not necessary to provide the diaphragm part 17 separately from the damping member 140, the structure can be simplified and the manufacturing can be facilitated. Further, according to this modification, the volume of the damping member 140 can be easily increased as compared with the first embodiment, so that the damping effect of the damping member 140 is increased and the generation of sound is further increased. It can be effectively suppressed.

  The fourth modified example of the first embodiment shown in FIG. 9B is different from the third modified example of the first embodiment shown in FIG. 9A in the shape of the damping member 140. Other configurations are the same as those of the third modification of the first embodiment. In this modification, the damping member 140 is joined to the first substantially cylindrical portion 141 joined to the flange portion 13 of the fixed terminal 10 and the bottom portion 24 of the first container 20, and the first substantially cylindrical portion 141 is joined. The second substantially cylindrical portion 142 having a smaller diameter and one disc-shaped portion 143 connecting the ends of the two cylindrical portions 141 and 142 are configured. According to this modification, as in the third modification of the first embodiment described above, the damping effect of the vibration damping member 140 can suppress the generation of sound at the time of contact collision, and the vibration damping member 140 can be suppressed. The generation of sound at the time of contact collision can be suppressed without increasing the conductor resistance of the fixed terminal 10 due to the provision of. Moreover, according to this modification, since it is not necessary to provide the diaphragm part 17 separately from the damping member 140, the structure can be simplified and the manufacturing can be facilitated. Further, according to this modification, the volume of the damping member 140 can be easily increased as compared with the first embodiment, so that the damping effect of the damping member 140 is increased and the generation of sound is further increased. It can be effectively suppressed. Furthermore, according to this modification, since the damping member 140 has a bent portion, the damping member 140 absorbs (relaxes) the difference in thermal expansion coefficient between the fixed terminal 10 and the first container 20. Can do. In the fourth modification of the first embodiment shown in FIG. 9B, the positional relationship between the first substantially cylindrical portion 141 and the second substantially cylindrical portion 142 may be reversed. In addition, the vibration damping member 140 may further include one or a plurality of cylindrical portions having different diameters from the substantially cylindrical portions 141 and 142.

B. Second embodiment:
FIG. 10 is an explanatory diagram showing a configuration in the vicinity of the fixed terminal 10 and the movable contact 50 in the second embodiment. The second embodiment shown in FIG. 10 is different from the first embodiment shown in FIG. 6 in the position where the damping member 140 is provided, and other configurations are the same as those of the first embodiment.

  As shown in FIG. 10, in the second embodiment, the damping member 140 is attached to the main body portion 14 of the fixed terminal 10, not between the flange portion 13 of the fixed terminal 10 and the bottom portion 24 of the first container 20. It has been. Specifically, an annular groove 15 is formed on the outer peripheral surface of the substantially cylindrical main body 14 of the fixed terminal 10, and the fixed terminal 10 is fitted with the annular vibration damping member 140 fitted in the groove 15. It is joined with. The joining method is the same as in the first embodiment. Therefore, in the second embodiment, the entire damping member 140 is located in the airtight space 100.

  In the second embodiment, since the damping member 140 made of a damping alloy is attached to the fixed terminal 10 as in the first embodiment described above, the fixed terminal 10 (fixed contact 18) and the movable contact 50 ( Transmission of vibration generated by an impact caused by the collision with the movable contact 58) can be suppressed by the damping effect of the damping member 140, and generation of sound at the time of contact collision can be suppressed. In addition, since the contact area between the damping member 140 and the fixed terminal 10 can be increased, the damping effect of the damping member 140 can be further increased and the generation of sound can be more effectively suppressed. Moreover, the damping member 140 can be made into a simple shape (annular shape), and facilitation of parts processing can be realized. Furthermore, in the second embodiment, since the vibration damping member 140 is attached to the main body portion 14 that is a portion close to the fixed contact 18 in the fixed terminal 10, the position of the vibration damping member 140 is made close to the collision position between the contacts. And generation of sound can be more effectively suppressed.

  FIGS. 11 to 14 are explanatory views showing the configuration of the vibration damping member 140 in a modification of the second embodiment. 11 to 14 show only the configuration around one fixed terminal 10, the configuration around the other fixed terminal 10 is the same.

  In the first modification of the second embodiment shown in FIG. 11, the vibration damping member 140 is attached to the main body portion 14 of the fixed terminal 10, but the main body portion 14 is not formed with the groove 15, The vibration member 140 is different from the second embodiment shown in FIG. 10 in that the vibration member 140 is joined to the outer peripheral surface of the cylindrical main body 14, and other configurations are the same as those of the second embodiment. According to this modification, as in the second embodiment described above, the generation of sound can be more effectively suppressed by making the position of the damping member 140 close to the collision position between the contacts, and the damping can be suppressed. The vibration member 140 can have a simple shape (annular shape), and the parts can be easily processed. Furthermore, according to this modification, the damping member 140 can be attached without forming the groove 15 in the main body portion 14 of the fixed terminal 10, so that the conductor resistance of the fixed terminal 10 can be increased by providing the damping member 140. Without being accompanied, generation of sound at the time of contact collision can be suppressed.

  A second modification of the second embodiment shown in FIG. 12 is shown in FIG. 11 in that a tapered portion 16 whose diameter decreases toward the lower side is formed at the lower end of the main body portion 14 of the fixed terminal 10. The second modification is different from the first modification of the second embodiment, and the other configurations are the same as those of the first modification of the second embodiment. According to this modification, as in the first modification of the second embodiment described above, the generation of sound is more effectively suppressed by bringing the position of the damping member 140 closer to the collision position between the contacts. In addition, the damping member 140 can have a simple shape (annular shape), and the parts can be easily processed. In addition, since the damping member 140 can be attached to the main body portion 14 of the fixed terminal 10 without forming the groove 15, there is no increase in the conductor resistance of the fixed terminal 10 by providing the damping member 140, and at the time of contact collision Generation of noise can be suppressed. Furthermore, according to this modified example, when the damping member 140 is joined to the main body portion 14 by press-fitting, the press-fitting is facilitated by the presence of the tapered portion 16, and the assembly of the parts can be facilitated.

  A third modification of the second embodiment shown in FIG. 13 is that the damping member 140 is disposed in the hole 11 formed in the main body 14 of the fixed terminal 10 as shown in FIG. The second embodiment is different from the illustrated second embodiment, and other configurations are the same as those of the second embodiment. According to this modification, the generation of sound can be more effectively suppressed by bringing the position of the damping member 140 close to the collision position between the contacts, as in the second embodiment described above. In particular, according to this modification, the vibration damping member 140 can be disposed at a position very close to the fixed contact 18, and therefore the generation of sound can be more effectively suppressed by the vibration damping member 140.

  In the fourth modification of the second embodiment shown in FIG. 14, the damping member 140 is disposed in the connection port 12 of the fixed terminal 10 (including a portion located in the main body portion 14 of the connection port 12). The second embodiment shown in FIG. 10 is that the damping member 140 functions also as a member for fixing the bus bar 150 for electrical connection between the relay 5 and other components to the fixed terminal 10. Other configurations are the same as those of the second embodiment. In this modification, the damping member 140 is fixed by screw tightening or press fitting. In this modification, it can be said that a part (lower part) of the damping member 140 is attached to the main body part 14. According to this modification, the generation of sound can be more effectively suppressed by bringing the position of the damping member 140 close to the collision position between the contacts, as in the second embodiment described above. Furthermore, according to this modification, the damping member 140 also functions as a member that fixes the bus bar 150 to the fixed terminal 10, so that the number of parts can be reduced and manufacturing can be facilitated.

C. Third embodiment:
FIG. 15 is an explanatory diagram showing a configuration in the vicinity of the fixed terminal 10 and the movable contact 50 in the third embodiment. The third embodiment shown in FIG. 15 is different from the first embodiment shown in FIG. 6 in the position where the damping member 140 is provided, and other configurations are the same as those of the first embodiment.

  As shown in FIG. 15, in the third embodiment, the damping member 140 is attached to the movable contact 50 instead of the fixed terminal 10. Specifically, a substantially flat damping member 140 is joined to the upper surface of the movable contact 50. The joining method is the same as in the first embodiment.

  In the third embodiment, since the damping member 140 made of damping alloy is attached to the movable contact 50, it accompanies a collision between the fixed terminal 10 (fixed contact 18) and the movable contact 50 (movable contact 58). Transmission of vibration generated by impact can be suppressed by the damping effect of the damping member 140, and generation of sound at the time of contact collision can be suppressed. In addition, since the contact area between the damping member 140 and the movable contact 50 can be increased, the damping effect of the damping member 140 can be further increased and the generation of sound can be more effectively suppressed. Moreover, the damping member 140 and the movable contact 50 can be made into a simple shape (substantially flat plate shape), and the parts can be easily processed. Furthermore, in 3rd Embodiment, since the damping member 140 is attached to the movable contact 50, the position of the damping member 140 can be made close to the collision position between contacts, and generation | occurrence | production of a sound is suppressed more effectively. can do.

  In the third embodiment, since the damping member 140 is joined to the upper surface of the movable contact 50, the damping member 140 is made of a ferromagnetic such as Fe-Al among the above-described four types of damping alloys. Forming with a body-type damping alloy is preferable because it can suppress the decrease in contact pressure between the movable contact 58 and the fixed contact 18 and the occurrence of separation between the movable contact 58 and the fixed contact 18. FIG. 16 is a diagram for explaining the effect of the vibration damping member 140 in the third embodiment. FIG. 16 schematically shows the rod 60, the movable contact 50, and the vibration damping member 140. As shown in FIG. 16, when the relay 5 is on, a current flows through the movable contact 50. The direction of this current is assumed to be a direction from the back side toward the front side (Y-axis positive direction). When a current flows through the movable contact 50, a counterclockwise magnetic flux Ba is generated around this current. Here, when the damping member 140 fixed to the upper surface of the movable contact 50 is a ferromagnetic damping alloy, the magnetic flux Ba is attracted to the damping member 140 side (upper side) that is a magnetic body. . As a result, among the magnetic flux Ba passing through the movable contact 50, the magnetic flux density of the magnetic flux Ba facing leftward (X-axis positive direction) decreases, and the magnetic flux density of the magnetic flux Ba directed rightward (X-axis negative direction) increases. As the magnetic flux density of the rightward magnetic flux Ba increases, an upward Lorentz force Fp (hereinafter also referred to as an attracting force Fp) is generated with respect to the current flowing through the movable contact 50. Since the attracting force Fp acts in the upward direction, that is, in the direction in which the movable contact 50 is brought closer to the fixed contact 18 of the fixed terminal 10, the contact between the fixed terminal 10 and the movable contact 50 can be maintained more stably. In particular, even when a large current (for example, a current of 5000 amperes or more) flows through the movable contact 50 and a large electromagnetic repulsive force acts on the movable contact 50, the driving force of the drive mechanism 90 (for example, the first spring 62) Without increasing the urging force) more than necessary, it is possible to suppress a decrease in contact pressure between contacts and occurrence of contact separation. As is clear from the above description, such an adsorption force Fp is not limited to the case where the entire damping member 140 is positioned on the upper surface of the movable contact 50, and the center of gravity of the damping member 140 is the movable contact 50. This occurs when the center of gravity of the movable contact 50 is positioned upward (the center of gravity of the movable contact 50 is positioned below the center of gravity of the damping member 140).

  FIGS. 17 to 27 are explanatory views showing the configuration of the vibration damping member 140 in a modification of the third embodiment. In the first modification of the third embodiment shown in FIG. 17, the groove 57 is formed on the upper surface of the movable contact 50, and the movable contact 50 is fitted in the state where the damping member 140 is fitted in the groove 57. The point of being joined is different from that of the third embodiment shown in FIG. 15, and other configurations are the same as those of the third embodiment. According to this modification, as in the third embodiment described above, the position of the damping member 140 can be brought close to the collision position between the contacts, and the contact between the damping member 140 and the movable contact 50 can be achieved. Since the area can be increased, the generation of sound can be more effectively suppressed. Moreover, the damping member 140 can be made into a simple shape (substantially flat plate shape), and facilitation of parts processing can be realized. In this modification, the center of gravity of the damping member 140 is located above the center of gravity of the movable contact 50 (the center of gravity of the movable contact 50 is located below the center of gravity of the damping member 140). When the vibration member 140 is formed of a ferromagnetic damping alloy, it is possible to suppress a decrease in contact pressure between the movable contact 58 and the fixed contact 18 and occurrence of separation between the movable contact 58 and the fixed contact 18.

  A second modification of the third embodiment shown in FIG. 18 is that a hole 59 is formed in the movable contact 50 and the vibration damping member 140 is disposed in the hole 59. FIG. The third embodiment is different from the third embodiment shown in FIG. 1, and other configurations are the same as those of the third embodiment. According to this modification, as in the third embodiment described above, the position of the damping member 140 can be brought close to the collision position between the contacts, and the contact between the damping member 140 and the movable contact 50 can be achieved. Since the area can be increased, the generation of sound can be more effectively suppressed. In particular, according to this modified example, the vibration damping member 140 can be disposed at a position very close to the position immediately below the movable contact 58, so that the generation of sound can be more effectively suppressed by the vibration damping member 140. Further, in this modification, when the center of gravity of the damping member 140 is located above the center of gravity of the movable contact 50 (when the center of gravity of the movable contact 50 is located below the center of gravity of the damping member 140). If the damping member 140 is made of a ferromagnetic damping alloy, it suppresses the decrease in contact pressure between the movable contact 58 and the fixed contact 18 and the occurrence of separation between the movable contact 58 and the fixed contact 18. Can do.

  In the third modification of the third embodiment shown in FIG. 19, the groove 57 is formed on the lower surface of the movable contact 50, and the movable contact 50 is in a state where the damping member 140 is fitted in the groove 57. Is different from the third embodiment shown in FIG. 15, and other configurations are the same as those of the third embodiment. According to this modification, as in the third embodiment described above, the position of the damping member 140 can be brought close to the collision position between the contacts, and the contact between the damping member 140 and the movable contact 50 can be achieved. Since the area can be increased, the generation of sound can be more effectively suppressed. In particular, according to this modified example, the vibration damping member 140 can be disposed at a position very close to the position immediately below the movable contact 58, so that the generation of sound can be more effectively suppressed by the vibration damping member 140. Moreover, the damping member 140 can be made into a simple shape (substantially flat plate shape), and facilitation of parts processing can be realized.

  In this modification, the center of gravity of the damping member 140 is positioned below the center of gravity of the movable contact 50 (the center of gravity of the movable contact 50 is positioned above the center of gravity of the damping member 140). In this modification, when the damping member 140 is formed of a ferromagnetic damping alloy, and another magnetic member 160 is installed above the movable contact 50, as described below, the movable contact 58 and A decrease in contact pressure between the fixed contact 18 and the occurrence of separation between the movable contact 58 and the fixed contact 18 can be suppressed. FIG. 20 is a diagram for explaining the effects of the vibration damping member 140 and the magnetic member 160 in the third modification of the third embodiment. FIG. 20 schematically shows the movable contact 50, the vibration damping member 140, and another magnetic member 160. As shown in FIG. 20, when the relay 5 is on, a current flows through the movable contact 50. The direction of this current is assumed to be a direction from the back side toward the front side (Y-axis positive direction). When a current flows through the movable contact 50, a counterclockwise magnetic flux Ba is generated around this current. Here, when the damping member 140 fixed to the lower side of the movable contact 50 is a ferromagnetic damping alloy, and another magnetic member 160 is installed above the movable contact 50. Then, the two members 140 and 160 are magnetized in the direction in which they are attracted to each other by the magnetic flux Ba passing through the damping member 140 and the magnetic member 160 in the magnetic flux Ba. That is, an upward suction force is generated on the damping member 140, and an upward force is applied to the movable contact 50 fixed to the damping member 140. Thereby, the contact of the fixed terminal 10 and the movable contact 50 can be maintained more stably. In this case, it is preferable that the thickness of the other magnetic member 160 (the size along the vertical direction) is larger than the thickness of the vibration damping member 140. In this way, since the magnetic member 160 receives the magnetic flux Ba more strongly than the damping member 140, the upward attractive force acting on the damping member 140 can be increased efficiently.

  The fourth modification of the third embodiment shown in FIG. 21 is that the movable contact 50 and the damping member 140 are configured as a bonding material (cladding material), as shown in FIG. It is different from the embodiment, and other configurations are the same as those of the third embodiment. In the fourth modification of the third embodiment, the damping member 140 is joined to the lower side of the movable contact 50 by diffusion bonding. According to this modification, as in the third embodiment described above, the position of the damping member 140 can be brought close to the collision position between the contacts, and the contact between the damping member 140 and the movable contact 50 can be achieved. Since the area can be increased, the generation of sound can be more effectively suppressed. In particular, according to this modified example, the vibration damping member 140 can be disposed at a position very close to the position immediately below the movable contact 58, so that the generation of sound can be more effectively suppressed by the vibration damping member 140. Further, the damping member 140 can be firmly joined to the movable contact 50. In the fourth modification of the third embodiment, the center of gravity of the damping member 140 is positioned below the center of gravity of the movable contact 50 (the center of gravity of the movable contact 50 is above the center of gravity of the damping member 140). However, if the damping member 140 is made of a ferromagnetic damping alloy and another magnetic member 160 is installed above the movable contact 50, the third modification of the third embodiment Similarly to the above, it is possible to suppress a decrease in contact pressure between the movable contact 58 and the fixed contact 18 and the occurrence of separation between the movable contact 58 and the fixed contact 18.

  The fifth modification of the third embodiment shown in FIGS. 22 and 23 has a U-shaped cross section when viewed from the Y direction of the damping member 140, and a central portion along the Y direction of the movable contact 50 ( 15 is different from the third embodiment shown in FIG. 15 in that the vibration damping member 140 is arranged so as to cover the portion from which the movable contact 58 is not formed) from above. Other configurations are the third embodiment. It is the same. That is, the center portion of the movable contact 50 is covered with the damping member 140 on the upper surface and side surfaces. According to this modification, as in the third embodiment described above, the position of the damping member 140 can be brought close to the collision position between the contacts, and the contact between the damping member 140 and the movable contact 50 can be achieved. Since the area can be increased, the generation of sound can be more effectively suppressed. In this modification, the center of gravity of the damping member 140 is located above the center of gravity of the movable contact 50 (the center of gravity of the movable contact 50 is located below the center of gravity of the damping member 140). When the vibration member 140 is formed of a ferromagnetic damping alloy, it is possible to suppress a decrease in contact pressure between the movable contact 58 and the fixed contact 18 and occurrence of separation between the movable contact 58 and the fixed contact 18.

  The sixth modification of the third embodiment shown in FIGS. 24 and 25 has a U-shaped cross section viewed from the Y direction of the damping member 140, and a central portion (in the Y direction of the movable contact 50) ( 15 is different from the third embodiment shown in FIG. 15 in that the vibration damping member 140 is arranged so as to cover the lower part) on the portion where the movable contact 58 is not formed, and the other configuration is the third embodiment. It is the same. That is, the lower surface and the side surface of the movable contact 50 are covered with the damping member 140. According to this modification, as in the third embodiment described above, the position of the damping member 140 can be brought close to the collision position between the contacts, and the contact between the damping member 140 and the movable contact 50 can be achieved. Since the area can be increased, the generation of sound can be more effectively suppressed. In particular, according to this modified example, the vibration damping member 140 can be disposed at a position very close to the position immediately below the movable contact 58, so that the generation of sound can be more effectively suppressed by the vibration damping member 140. In this modification, the center of gravity of the damping member 140 is positioned below the center of gravity of the movable contact 50 (the center of gravity of the movable contact 50 is positioned above the center of gravity of the damping member 140). When the vibration member 140 is made of a ferromagnetic damping alloy and another magnetic member 160 is installed above the movable contact 50, the movable contact 58 is the same as the third modification of the third embodiment. And the contact between the fixed contact 18 and the movable contact 58 and the fixed contact 18 can be prevented from being separated.

  The seventh modification of the third embodiment shown in FIGS. 26 and 27 is a rectangular portion having a hollow cross section viewed from the Y direction of the damping member 140, and the central portion of the movable contact 50 along the Y direction. It is different from the third embodiment shown in FIG. 15 in that it is arranged so as to cover the periphery of (the portion where the movable contact 58 is not formed), and the other configuration is the same as that of the third embodiment. . That is, the center portion of the movable contact 50 is covered with the damping member 140 on the upper and lower surfaces and the side surfaces. According to this modification, as in the third embodiment described above, the position of the damping member 140 can be brought close to the collision position between the contacts, and the contact between the damping member 140 and the movable contact 50 can be achieved. Since the area can be increased, the generation of sound can be more effectively suppressed. Further, in this modification, when the center of gravity of the damping member 140 is located above the center of gravity of the movable contact 50 (when the center of gravity of the movable contact 50 is located below the center of gravity of the damping member 140). If the damping member 140 is made of a ferromagnetic damping alloy, it suppresses the decrease in contact pressure between the movable contact 58 and the fixed contact 18 and the occurrence of separation between the movable contact 58 and the fixed contact 18. Can do.

D. Other variations:
Note that the present invention is not limited to the above-described embodiment, and can be realized in various forms without departing from the gist thereof. For example, the present invention can be realized as the following modifications.

D1. Modification 1:
In the said embodiment, the structure of the electric power system 1 in which the relay 5 is used is an example to the last, and can be variously deformed. For example, the power system 1 may further include a fuse. Moreover, in the said embodiment, although the relay 5 is used for the electric power system 1 mounted in a hybrid vehicle or an electric vehicle, the relay 5 can be used also for other uses (for example, for solar power generation devices). .

D2. Modification 2:
The configuration of the relay 5 in the above embodiment is merely an example, and various modifications can be made. For example, in each of the above embodiments, the relay 5 may include both the vibration damping member 140 attached to the fixed terminal 10 and the vibration damping member 140 attached to the movable contact 50. In each of the above embodiments, a mechanism for moving the movable iron core 72 by magnetic force is used as the drive mechanism 90. However, the present invention is not limited to this, and another mechanism for moving the movable contact 50 is used. Also good. For example, a mechanism may be employed in which the movable contact 50 is provided with a lift portion that can be extended and retracted from the outside, and the movable contact 50 is moved by expansion and contraction of the lift portion. Further, the restriction portion 60 b of the rod 60 may be joined to the movable contact 50. By doing so, the movable contact 50 can be moved in conjunction with the movement of the movable iron core 72 without providing the first spring 62. Further, in place of the first spring 62, various spring members such as a disc spring and a leaf spring, and other elastically deformable members such as rubber may be employed. Moreover, the shape of each member, the joining position between each member, and the joining method can be set arbitrarily.

  In each of the above embodiments, brazing, welding, and press-fitting are exemplified as a joining method between the vibration damping member 140 and the fixed terminal 10 or the movable contact 50, but other joining methods may be employed. . Further, the damping member 140 does not necessarily have to be joined to the fixed terminal 10 or the movable contact 50, and the damping member 140 is in contact with the fixed terminal 10 or the movable contact 50 by contact pressure of a spring or the like. It is good.

  Further, the first container 20 is not necessarily formed of an insulating material. For example, the bottom portion 24 of the first container 20 is formed of an insulating material, the side surface portion 22 is formed of a metal (a magnetic material such as iron or a nonmagnetic material such as stainless steel 304), and the bottom portion 24 and the side surface portion 22 are, for example, It may be joined by brazing.

  In the above embodiment, the vibration damping member 140 is made of a vibration damping alloy. However, even if the vibration damping member 140 is configured using a material (rubber or resin) having vibration damping properties other than the vibration damping alloy. Good. As such a material, for example, a material having excellent vibration damping characteristics mainly composed of nitrile rubber, acrylic rubber, silicone rubber, natural rubber or the like, polyester resin, polyamide resin or the like as a main component. Examples include materials with excellent vibration damping characteristics. Since the vibration damping alloy has high heat resistance and can be processed into a relatively complicated shape, by using the vibration damping member 140 made of the vibration damping alloy, the durability of the vibration damping member 140 is improved. And generation | occurrence | production of the sound at the time of a contact collision can be suppressed, implement | achieving the improvement of apparatus design freedom. Moreover, in the form shown in FIGS. 6-9 which needs to ensure airtightness by the damping member 140 or the form in which the damping member 140 is embedded in the movable contact 50 or the fixed terminal 10, other than the damping alloy. It is not preferable to use the damping member 140 made of a material. 10-12, 15, 17, 19, 22-27, the damping member 140 formed of a material other than the damping alloy can be used.

  Further, each of the two fixed terminals 10 of the relay 5 of the above embodiment has one fixed contact 18, and the movable contact 50 has two movable contacts 58 corresponding to the respective fixed contacts 18. However, the movable contact 50 may have a third or more additional movable contacts in addition to the two movable contacts 58. Similarly, each fixed terminal 10 may have a second or more additional fixed contacts in addition to the one fixed contact 18. In these cases, the number and correspondence between the additional movable contact and the additional fixed contact can be arbitrarily set. In other words, the description “a relay having two fixed terminals each having a fixed contact and a movable contact having two movable contacts respectively corresponding to each fixed contact” means that each fixed terminal has two or more fixed contacts. This does not exclude the case where the movable contactor has three or more movable contacts.

DESCRIPTION OF SYMBOLS 1 ... Electric power system 2 ... Storage battery 3 ... Power converter 4 ... Motor 5 ... Relay 6 ... Relay body 10 ... Fixed terminal 11 ... Hole 12 ... Connection port 13 ... Flange part 14 ... Main body part 15 ... Groove 16 ... Tapered part 17 ... Diaphragm portion 18 ... fixed contact 19 ... fixed contact portion 20 ... first container 22 ... side surface portion 24 ... bottom portion 26 ... through hole 30 ... joining member 32 ... base portion 32h ... through hole 35 ... joining portion 40 ... coil container 42 ... Coil bobbin 44 ... Coil 50 ... Movable contact element 52 ... Center part 53 ... Through hole 56 ... Movable contact part 57 ... Groove 58 ... Movable contact point 59 ... Hole 60 ... Rod 60a ... Shaft part 60b ... Restriction part 60c ... Other end part 62 ... 1st spring 64 ... 2nd spring 67 ... Mounting member 69 ... Ventilation pipe 70 ... Fixed iron core 70h ... Through hole 72 ... Movable iron core 72h ... Through hole 80 ... Container for iron core 86 ... Rubber 90 ... Drive mechanism 92 ... Second container 100 ... Airtight space 110 ... Case member 120 ... Case holding member 140 ... Damping member 141 ... First substantially cylindrical portion 142 ... Second substantially cylindrical portion 143 ... Disc 150 ... Bus bar 160 ... Magnetic member 800 ... Permanent magnet

Claims (7)

Two conductive fixed terminals each having a fixed contact, a conductive movable contact having two movable contacts corresponding to each fixed contact, and each movable contact corresponding to the movable contact by moving the movable contact A relay comprising: a driving member that switches between a state that contacts the fixed contact and a state that does not contact; and a first container that supports the two fixed terminals.
A relay comprising a damping member in contact with at least one of the fixed terminal and the movable contact. The relay according to claim 1,
The relay, wherein the damping member is a damping member made of damping alloy. The relay according to claim 1 or 2,
The relay, wherein the damping member is disposed between the fixed terminal and the first container. The relay according to claim 1 or 2,
The fixed terminal has a flange portion joined to the first container, and a main body portion located on the fixed contact side from the flange portion,
At least a part of the damping member is attached to the main body of the fixed terminal. The relay according to claim 1 or 2,
The relay, wherein the damping member is attached to the movable contact. The relay according to claim 5,
The relay, wherein the damping member is a magnetic body. The relay according to claim 6, further comprising:
The relay comprising the other magnetic body member arranged on the first direction side in which the movable contact approaches the fixed contact from the movable contact.

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