JP3596550B2 - High frequency relay - Google Patents

Description

  The present invention relates to a high-frequency relay that opens and closes a high-frequency signal.

  Conventionally, as this type of high-frequency relay, there is one disclosed in Japanese Utility Model Publication No. 7-23877. As shown in FIG. 13, an electromagnet C in which a coil A is wound around an iron core B, a fixed terminal D connected to the outside, and a contact (movable contact) driven to contact and separate from the fixed terminal D are provided. Piece) E, and a movable iron piece (armature) F which is attracted to and separated from the iron core B in response to excitation of the coil A in order to obtain a driving force for driving the contact E.

This device has a mounting surface G mounted on a printed circuit board (external) X as shown in FIG. 14, and when mounted on the printed circuit board P, the fixed terminal D penetrates the printed circuit board X. , Protruding from the back surface. Then, the high-frequency relay is fixed to the printed circuit board X by soldering the protruding base portion.
Japanese Utility Model Publication No. 7-23877

  In the above-described conventional high-frequency relay, when mounted on the printed circuit board X, the fixed terminal D is fixed through the printed circuit board X, and the fixed terminal D, which is a transmission path of the high-frequency signal, further projects from the back surface. Therefore, it is inevitably impossible to shield the penetrating portion and the protruding portion of the printed circuit board X, and the shielding property for the transmission path of the high-frequency signal is not necessarily high.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a high-frequency relay having a high shielding property with respect to a transmission path of a high-frequency signal.

  In order to solve the above-mentioned problem, a high-frequency relay according to claim 1 is driven so that a coil is wound around an iron core, a fixed terminal connected to the outside, and a fixed terminal connected to and separated from the outside. In a high-frequency relay having a contact and an armature attracted to and separated from an iron core in response to excitation of a coil in order to obtain a driving force for driving the contact, the contact is provided in a high-frequency relay having a mounting surface mounted externally. A plate having a contact / separation surface that comes into contact with / separates from the fixed terminal, the contact being supported in an insulated state so that the contact / separation surface is parallel to the mounting surface, and a contact between the contact and the fixed terminal; A metal shield member for shielding the separated portion is provided, and the shield member is formed by moving a sub base as its component and a base having an outer bottom surface as the mounting surface in a direction orthogonal to the contact / separation surface. Along A contact support member made of an insulating material for supporting the contact, which is provided so as to sandwich the contact from a direction orthogonal to the contact / separation surface, wherein the contact is penetrated and fixed to a base and a driving force by an armature is provided. And a return spring for displaceably supporting the contact support member along the direction orthogonal to the contact / separation surface. The return spring is placed on the base while being positioned on the base, and is electrically connected to the base. The base is provided with an insertion hole through which the contacted portion of the contact support member is inserted, and the return spring is located at a position corresponding to an opening of the insertion hole of the sub base. The armature is arranged so that both ends are attracted to and separated from the iron core, thereby performing a seesaw operation with the central portion on one surface as a swinging fulcrum, and the fixed terminal is capable of coming and going with one contact. The opposite fixed terminal is fixed to an insulator integrated with one end of the base, the inner tip is located near one end of the armature, and the fixed terminal facing the other contact so as to be able to contact and separate, A fixed terminal fixed to the insulator integrated with the other end of the base, the inner tip is located near the other end of the armature, and a fixed terminal facing the two contacts so as to be able to contact and separate is provided at the center of the base. The fixed terminal is fixed to the integrated insulator and is provided at a central portion of the armature, and the fixed terminal is fixedly penetrated to the insulator, and an outer end portion of the fixed terminal. Is led out of the base, the center piece and the leg piece An armature spring for transmitting the driving force closer to the center than both ends of the armature has its center piece connected to the center of the other surface of the armature, and the contact support member has By contacting the leg of the armature spring to the contact portion, the driving force by the armature is transmitted and the return spring supporting the contact support member is bent, while displacing the contact support member toward the base, The contact is displaced toward the base from the state where it was in contact with the sub-base, and the contact / separation surface abuts on the fixed terminal, and the compressed return spring is returned and deformed by its own spring force. The support member is displaced away from the base, and the contact fixed to the contact support member displaced away from the base is displaced away from the base to form a sub-base. It has a configuration that contact.

  A high-frequency relay according to a second aspect of the present invention is the high-frequency relay according to the first aspect, wherein the fixed terminals are arranged along substantially the same plane as the mounting surface.

  A high frequency relay according to a third aspect is configured such that the mounting surface is grounded in the high frequency relay according to the first or second aspect.

  In the high-frequency relay according to the first aspect, the return spring that supports the contact support member that supports the contact is made of metal, and is electrically connected to the shield member. Therefore, the high-frequency relay supports the contact support member that is made of an insulating material. Shielding can be performed at the position, and the shielding property can be enhanced.

  In the high frequency relay according to the second aspect, the fixed terminal having the mounting surface mounted on the outside substantially along the same surface can be connected to the external surface by soldering as a so-called SMD terminal, so that it can be mounted on the printed circuit board. Compared with the conventional example in which the fixed terminal penetrates and projects further from the back surface, the fixed terminal serving as the transmission path of the high-frequency signal can be shortened, and the shielding property for the transmission path of the high-frequency signal can be enhanced.

  In the high-frequency relay according to the third aspect, the high-frequency relay can be grounded by appropriately grounding the surface of the printed circuit board to be mounted.

  A high-frequency relay according to a first reference example will be described below with reference to FIGS. In FIG. 2, the coil 3 is omitted.

  Numeral 1 denotes an iron core, which is made of a magnetic material, and whose both leg portions are formed in a substantially U-shape as magnetic pole portions 1a and 1b. A coil 3 is wound around a portion partitioned by both coil bobbins 2 integrally formed. , And the coil 3 constitute an electromagnet 30a. The coil 3 is connected to a coil terminal 4a formed integrally with the coil bobbin 2.

  Reference numeral 5 denotes a permanent magnet, which is formed in a substantially flat plate shape, and is magnetized at three points so that both ends 5a and 5b are S poles, and a portion deviated from the center is an N pole. As described above, since the permanent magnet 5 is magnetized such that a portion deviated from the center becomes the N pole, it performs a monostable operation as described later. The permanent magnet 5 is disposed so that both end portions 5 a and 5 b are located inside the magnetic pole portions 1 a and 1 b at both ends of the iron core 1, and is welded to the iron core 1. The permanent magnet 5 forms an electromagnet block 30 together with the coil bobbin 2 and the electromagnet 30a.

  Numeral 6 denotes an armature, which is formed of a magnetic material into a substantially rectangular flat plate so that both longitudinal end portions 6a and 6b serving as magnetic pole portions can face the magnetic pole portions 1a and 1b at both ends of the iron core 1. In the central part on the side of the side, a convex ridge-shaped swinging fulcrum 6c for performing a seesaw operation by being attracted and separated by the magnetic pole parts 1a and 1b of the iron core 1 is in contact with the central part of the permanent magnet 5. Is provided. As will be described in detail later, the armature 6 is attracted to and separated from the magnetic pole portions 1a and 1b of the iron core 1 in accordance with the excitation of the coil 3 in order to obtain a driving force for driving the contacts 14a and 14b. Further, the armature 6 is provided with a supported portion 6d which is swingably supported by a support portion 12a of a sub-base block 60 described later on both sides of a central portion thereof.

  Reference numeral 7 denotes an armature spring (driving member) which is formed of a thin metal spring material and has a central piece 7a and leg pieces 7b, and is formed in a substantially geometrical shape in a side view, and the central piece 7a is the other surface of the armature 6 It is connected to the armature 6 in a state of being superposed on the central portion, and forms an armature block 40 together with the armature 6. The distal ends of the leg pieces 7b of the armature spring 7 come into contact with a transmitted portion 8a of a hinge spring 8 which will be described later, which is superposed, so as to transmit the driving force obtained by the armature 6.

  Here, the tip of the leg piece 7b of the armature spring 7 is located closer to the swing fulcrum 6c at the center than both ends of the armature 6, so that the swing fulcrum is more than the both ends of the armature 6. The aforementioned driving force is transmitted to the transmitted portion 8a closer to 6c.

  Reference numeral 8 denotes a hinge spring (relay member), whose base end is rotatably supported by a hinge pin 9 supported by a support portion 12b provided on the insulator 12, which will be described later. A convex receiving portion 8a is provided in which the driving force is transmitted by contacting the armature spring 7 by performing a mold forming process on the central portion. The distal end of the hinge spring 8 comes into contact with a connecting plate 10b of a support member 10 described later so as to transmit the driving force obtained by the armature 6.

  Here, since the distal end of the hinge spring 8 is located closer to the swing fulcrum 6c than the transmitted portion 8a in plan view, the connecting plate 10b closer to the swing fulcrum 6c than the transmitted portion 8a is attached to the connecting plate 10b. The transmitted driving force is transmitted. The hinge spring 8 forms a hinge plate block 50 together with the hinge pin 9.

  Reference numeral 10 denotes a support member, which is composed of a return spring 10a having legs on both sides of the top and formed in a substantially rectangular shape in side view, and a connecting plate (support) 10b fixed to the top of the return spring 10a. ing.

  The return spring 10a is made of a plate-shaped metal spring material, and has an insertion hole 10c through which a contact support member 13 to be described later is inserted in the leg. The return spring 10a is mounted on the sub-base 11 in a state where the distal ends of its legs are positioned on an insulator 12 integrally formed with the sub-base 11, which will be described later, thereby connecting the connecting plate 10b. It is electrically connected to the sub base 11.

  The connecting plate 10b is provided at both ends thereof with support holes 10d each having an opening cross section and a rectangular shape for supporting the contact support member 13 therethrough by penetrating. The driving force is transmitted to the inside of the support holes 10d by the hinge spring 8 by the hinge spring 8. Is done. In the connection plate 10b, a shield portion 10e is provided in which a peripheral portion of the support hole 10d is disposed at a position corresponding to a position near a peripheral edge of an opening of an insertion hole 11a of the sub-base 11 described later.

  Reference numeral 11 denotes a sub-base (first shield material), which is made of a metal plate and forms a sub-base block 60 together with an integrally formed insulator 12 made of a resin material. The sub-base 11 has the coil bobbins 2 placed on both ends in the longitudinal direction, supports the electromagnet block 30, and is inserted into the coil terminal insertion holes (not shown) provided near four corners by an insulator 12. Therefore, the coil terminal 4b connected to the above-described coil terminal 4a is inserted. The sub-base 11 is provided with insertion holes 11a at four positions near the center thereof so as to allow a fixing portion 13b of the contact support member 13 to be described later to escape therethrough.

  The insulator 12 is provided with support portions 12a for swingably supporting the supported portions 6d of the armature 6 on both sides in the center portion in the longitudinal direction, and rotatably supports the hinge pins 9 in the centers of both ends in the longitudinal direction. The support part 12b is provided.

  Reference numeral 13 denotes a contact supporting member, which is made of a resin material and includes a rectangular parallelepiped base 13a and a rectangular parallelepiped fixing portion 13b smaller than the base 13a. The fixing portion 13b is inserted through the insertion hole 11a of the sub base 11 and the insertion hole 10c of the return spring 10a, and is penetrated and supported by the support hole 10d of the connecting plate 10b.

  The contact support member 13 includes two members, one for penetrating and fixing a contact 14a to be described later, and the other for penetrating and fixing a contact 14b to be described later, each arranged in parallel along the short direction of the base 15 described below. This high-frequency relay can be used as a so-called two-pole high-frequency relay.

  Reference numerals 14a and 14b denote contacts, which are formed in a plate shape, are fixed through the base 13a of the contact support member 13 respectively, and constitute a contact block 70 together with the contact support member 13. These contacts 14a, 14b have contacting / separating surfaces 14c that come into contact with and separate from three types of fixed terminals described later, namely, a normally closed fixed terminal 17, a normally open fixed terminal 18, and a common fixed terminal 19. The contact / separation surface 14c is parallel to the outer bottom surface of the base 15, that is, the mounting surface 15b when the contacts 14a and 14b are fixed to the base 13a of the contact support member 13 respectively.

  Reference numeral 15 denotes a base (second shield material) formed by metal injection molding into a predetermined shape in the shape of a shallow box, and insulators 16 made of a resin material are provided at both ends in the longitudinal direction and both sides in the center. The base block 80 is integrally formed and forms a base block 80 together with the insulator 16. The base 15 has cutouts 15a near the four corners for passing the coil terminals 4b. The outer bottom surface of the base 15 serves as a mounting surface 15b when the present high-frequency relay is mounted on, for example, a printed circuit board (external). By appropriately grounding the surface of the mounted printed circuit board, the high-frequency relay is also grounded. It is possible to do.

  In addition, the base 15 is joined to the sub base 11 on the upper surface thereof in a direction perpendicular to the contact / separation surface 14c of the contacts 14a and 14b by laser welding so as to hermetically seal the two. And the shield member S. The shield member S includes three types of fixed terminals 17, 18, and 19, which will be described later, and a contact 14a, with the sub base 11 and the base 15 as constituent elements sandwiching the contacts 14a, 14b from a direction orthogonal to the contact / separation surface 14c. , 14b are shielded.

  Reference numeral 17 denotes a normally-closed fixed terminal, which is fixedly penetrated by an insulator 16 integrated with one end of the base 15 in the longitudinal direction, and is led out of the base 15 so that the inner front end can be seen in a plan view. Is positioned near one end of the armature 6 and opposes one contact 14a for opening and closing on the normally closed side so as to be able to contact and separate from the other end, and the outer front end is located on the outer bottom surface of the base 15, that is, the mounting surface 15b. The intermediate portion is bent so as to be substantially on the same plane.

  Reference numeral 18 denotes a normally open fixed terminal, which is fixed through the insulator 16 integrated with the other end of the base 15 in the longitudinal direction, and is led out of the base 15 so that the inner front end has a flat surface. It is located in the vicinity of the other end of the armature 6 in a visual sense, opposes the other contact 14b for opening and closing on the normally open side so as to be able to contact and separate, and has an outer front end having an outer bottom surface of the base 15, that is, a mounting surface. The intermediate portion is bent so as to be substantially on the same plane as 15b.

  Reference numeral 19 denotes a common fixed terminal, which is fixed through the insulator 16 integrated with the central portion of the base 15 in the longitudinal direction, and is led out of the base 15 so that the central portion of the armature 6 in plan view; In other words, the inner tip is opposed to the contacts 14a and 14b so as to be able to contact and separate from each other, and the outer tip is substantially flush with the outer bottom surface of the base 15, that is, the mounting surface 15b. The middle part is bent so as to follow.

  On the other hand, the above-described coil terminal 4 b is connected to the coil terminal 4 a integrally formed with the coil bobbin 2, and after being inserted into the coil terminal insertion hole of the sub-base 11, is passed through the cutout portion 15 a of the base 15. Thereafter, it is bent outward so as to be located on substantially the same plane as the outer bottom surface of the base 15.

  Reference numeral 20 denotes a case, which is made of metal, has a box shape, and is fitted to the base 15 to form an outer surface of the high-frequency relay together with the outer bottom surface of the base 15, that is, the mounting surface 15b. A notch 20a is provided at an opening edge of the case 20, and the fixed terminals 17, 18, and 19 are led out from the notch 20a.

  In the case 20, the coil bobbin 2 abuts on the ceiling surface, and positions the electromagnet block 30, the sub base block 60, and the like between the ceiling surface and the base 15. The space between the case 20 and the base 15 is sealed with a sealant (not shown).

  Next, the operation of the high-frequency relay will be described. When the coil 3 is energized to excite the coil 3, the armature 6 has one end 6 a attracted to the magnetic pole 1 a at the other end of the iron core 1, so that the armature 6 has a ridge-shaped swing fulcrum 6 c. The swinging operation, that is, the seesaw operation is performed in a state where the permanent magnet 5 is in contact with the central portion of the permanent magnet 5.

  As a result, the armature spring 7 integrated with the armature 6 also oscillates, and the leg 7 b of the armature spring 7 is moved by the transmitted portion of the hinge spring 8 near the other end in the longitudinal direction of the base 15. 8a is pressed in a contact state, and the driving force by the armature 6 is transmitted. The hinge spring 8, to which the driving force has been transmitted, rotates and presses the connecting plate 10b of the support member 10, compresses the return spring 10a to which the connecting plate 10b is fixed, and penetrates the supporting hole 10d of the connecting plate 10b. The fixedly supported contact support member 13 is displaced toward the base.

  As a result, the contact 14b penetratingly fixed to the contact support member 13 is also displaced toward the base 15 from the state where it has been in contact with the sub-base 11, so that the contact / separation surface 14c is connected to the normally open fixed terminal 18 and It contacts the common fixed terminal 19. This state is shown in FIG.

  When the current supply to the coil 3 is stopped, one end 6a of the armature 6 is separated from the magnetic pole 1a at one end of the iron core 1, and the other end 6b of the armature 6 is connected to the other end of the iron core 1. The magnetic pole portion 1b is attracted and swings in reverse.

  As a result, the armature spring 7 integrated with the armature 6 also reversely swings, and the leg 7b of the armature spring 7 moves the transmitted portion 8a of the hinge spring 8 near one end in the longitudinal direction of the base 15. It is pressed in a contact state, and the driving force by the armature 6 is transmitted. The hinge spring 8, to which the driving force has been transmitted, rotates and presses the connecting plate 10b of the support member 10, compresses the return spring 10a to which the connecting plate 10b is fixed, and penetrates the supporting hole 10d of the connecting plate 10b. The fixedly supported contact support member 13 is displaced toward the base 15.

  At this time, the return spring 10a that has been compressed is returned and deformed by its own spring force. The return spring 10a, which has been returned and deformed, displaces the contact support member 13 that is supported by being penetrated and supported in the support hole 10d of the fixed connecting plate 10b in a direction away from the base 15.

  As a result, the contact 14a penetratingly fixed to the contact support member 13 displaced toward the base 15 is displaced toward the base 15 from the state where it has been in contact with the sub-base 11, and the contact / separation surface 14c is displaced. The contact 14b, which abuts on the normally closed fixed terminal 17 and the common fixed terminal 19 and is fixed through the contact support member 13 displaced away from the base 15, is displaced away from the base 15 so that the sub-base 11 Contact

  In such a high-frequency relay, each of the fixed terminals 17, 18, and 19, which are arranged along substantially the same plane as the mounting surface 15b mounted on the printed board, can be soldered to the surface of the printed board as so-called SMD terminals. This makes it possible to shorten the fixed terminals 17, 18, and 19 that serve as transmission paths for high-frequency signals as compared with the conventional example in which the fixed terminals protrude from the back surface through the printed circuit board. Shielding property for the transmission path can be enhanced.

  Further, since the contacts 14a and 14b are supported in an insulating state such that the contact / separation surface 14c is parallel to the mounting surface 15b, the contact / separation portion between the fixed terminal and the contact is orthogonal to the mounting surface. In the width direction of the contacts 14a and 14b on the contact / separation surface 14c, as compared with the case where the contact is separated from the contact / separation surface of the contact along the contact width direction. The terminals 17, 18, and 19 can be shortened, and the effect of increasing the shielding property against the transmission path of the high-frequency signal can be further obtained.

  In addition, the driving force obtained by the armature 6 is transmitted to the center of the armature 6 from the both ends by the armature spring 7 connected to the armature 6, so that the driving force is applied to both ends in plan view. In comparison with the case where the power is transmitted to the vicinity of the magnetic pole portion as it is, the transmitted portion 8a to which the driving force for driving the contacts 14a and 14b is transmitted can be brought closer to the common fixed terminal 19, and the armature 6 at the contacts 14a and 14b is The contacts 14a and 14b can be brought into contact with and separated from the common fixed terminal 19 without increasing the size in the direction along the line. As described above, it is not necessary to increase the dimension of the contacts 14a and 14b, which are the transmission paths of the high-frequency signal, in the direction along the armature 6, so that the shielding property for the transmission path of the high-frequency signal can be enhanced. Can be further performed.

  Further, since the hinge spring 8 transmits the transmitted driving force closer to the swing fulcrum 6c than the transmitted portion 8a to which the driving force for driving the contacts 14a and 14b is transmitted, the driving force is transmitted. Since the connection plate 10b, which is the transmitted portion, can be brought closer to the common fixed terminal 19, the effect of increasing the shielding property for the transmission path of the high-frequency signal can be further achieved.

  Further, since the shield member S is provided so as to sandwich the contacts 14a and 14b from the direction perpendicular to the contact / separation surface 14c, that is, the direction perpendicular to the mounting surface 15b, the contacts 14a and 14b are arranged along the short direction of the mounting surface 15b. It can be arranged in two rows and can be used for two poles without providing the shield member S for each pole.

  Further, since the contacts 14a, 14b are displaced in the direction orthogonal to the mounting surface 15b, a space having a height corresponding to the displacement of the contacts 14a, 14b is provided along the direction orthogonal to the mounting surface 15b. In this case, if the displacement direction of the contacts 14a and 14b is set to be perpendicular to the mounting surface 15b, a height corresponding to the width of the contacts 14a and 14b is required. Comparing and considering that the space thus set must be secured as a displacement space for the contacts 14a and 14b, the height is easily reduced.

  Further, the contact / separation portions between the contacts 14a, 14b and the fixed terminals 17, 18, 19 and the coil terminals 4a, 4b are shielded by the shield member S and further shielded by the metal case 20, so that Shielding performance can be increased.

  In addition, even if the insertion hole 11a through which the contact support member 13 is inserted is provided in the sub-base 11, which is a component of the shield member S, the support member 10 is positioned close to the periphery of the opening of the insertion hole 11a of the sub-base 11. Since the metal shield portion 10e is provided at the corresponding position, leakage from the contacts 14a and 14b can be shielded, and the shielding performance can be enhanced.

  The connecting plate 10b that supports the contact supporting member 13 that supports the contacts 14a and 14b is made of metal, and is electrically connected to the sub-base 11 that is a component of the shield member S by a return spring 10a. Therefore, shielding can be performed at a position where the contact support member 13 made of an insulating material is supported, and the shielding property can be improved.

  In addition, since the outer surface of the base 15, which is a component of the shield member S, is used as the mounting surface 15b, it can be grounded without mounting a separate ground terminal by mounting it on a printed circuit board. Further, since the ground can be provided by the entire mounting surface 15b, the ground can be sufficiently grounded.

  In addition, since the base 15 which is a component of the shield member S is processed into a predetermined shape by metal injection molding, it can be easily processed and can be densely processed, so that the size is reduced, particularly the height is reduced. It becomes possible.

  In addition, since the sub-base 11 and the base 15 are joined by laser welding, they can be joined reliably, and as a result, sufficient shielding properties can be obtained.

  Next, a high-frequency relay according to a second reference example will be described below with reference to FIGS. The high-frequency relay of the present embodiment is basically the same as the high-frequency relay of the first embodiment, except that the sub-base 11 and the base 15, which are the components of the shield member S, are not only welded by laser, but also electrically conductive. It is configured to be adhered with a conductive adhesive.

  The base 15 is provided with a hole 15c for storing an adhesive at a central portion along a longitudinal direction thereof, and is joined to the sub-base 11 by the conductive adhesive stored in the hole 15c.

  In such a high-frequency relay, in addition to the effect of the high-frequency relay of the first reference example, the sub-base 11 and the base 15 are bonded by a conductive adhesive. Even if a gap L as shown in FIG. 6 occurs between the sub-base 11 and the base 15, electrical connection between the sub-base 11 and the base 15 becomes possible, and shielding performance can be ensured.

  Next, a high-frequency relay according to a third reference example will be described below with reference to FIGS. The high-frequency relay according to the present embodiment is basically the same as the high-frequency relay according to the second embodiment except that the distal ends of the fixed terminals 17, 18, and 19 are positioned between the inside of the case when viewed from the direction orthogonal to the mounting surface 15b. The configuration is as follows.

  In such a high-frequency relay, in addition to the effect of the high-frequency relay of the third reference example, the distal ends of the fixed terminals 17, 18, and 19 when viewed from the orthogonal direction of the mounting surface 15b are located inside the case 20, so that they are fixed. Terminals 17, 18, and 19 do not protrude outside of case 20, and the effect that the shielding property against the transmission path of the high-frequency signal can be enhanced can be further obtained.

  Next, a high-frequency relay according to an embodiment of the present invention will be described below with reference to FIGS. The high-frequency relay of this embodiment is basically the same as the high-frequency relay of the first reference example, except that the coil terminal 4 integrally formed with the coil bobbin is directly led to the outside, and the hinge spring 8 and the hinge pin 9 are connected. No support member is provided, and the support member 10 is constituted by only the return spring 10a, so that the number of parts is reduced.

  As shown in FIG. 11, the coil terminal 4 is bent from the lead-out portion along the coil bobbin 2 as shown in FIG.

  The return spring 10a has a central piece and both legs, and is formed in a substantially geometrical shape in a side view. The return spring 10a is a supporting portion provided with a supporting hole 10f which penetrates and supports a projection (not shown) provided on the back surface of the contact supporting member 13 to be described later. The return spring 10a is electrically connected to the base 15 by being placed on the base 15 with its tip end positioned on the inner wall surface of the base 15. The outer edges of both legs of the return spring 10a are shield portions 10e disposed at positions corresponding to the positions near the periphery of the opening of the insertion hole 11a of the sub-base 11.

  The contact support member 13 has a substantially U-shape by continuously connecting bases 13a on both sides in the short direction of the mounting surface 15b. The contacts 14a and 14b are fixed to the respective bases 13a through the bases 13a. The cylindrical contact portion 13c is integrated. The abutting portion 13c has a substantially hemispherical end surface that is in contact with the leg 7b of the armature spring 7. In this contact support member 13, the driving force of the armature 6 is transmitted when the leg 7b of the armature spring 7 abuts on the contacted portion 13c.

  Next, the operation of the high-frequency relay will be described. The same points as those of the high-frequency relay of the first reference example will be briefly described. When the coil 3 is energized and the coil 3 is excited, the armature 6 swings, and the armature spring 7 integrated with the armature 6 also swings. The leg piece 7b of the pivoted armature spring 7 contacts the contacted portion 13c of the contact support member 13 near the other longitudinal end of the base 15, and the leg of the return spring 10a supporting the contact support member 13. The contact support member 13 is displaced toward the base 15 while bending the portion.

  As a result, the contact 14b penetratingly fixed to the contact support member 13 is also displaced toward the base 15 from the state where it has been in contact with the sub-base 11, so that the contact / separation surface 14c is connected to the normally open fixed terminal 18 and It contacts the common fixed terminal 19. This state is shown in FIG.

  Here, when the current supply to the coil 3 is stopped, the armature 6 reversely oscillates, and the armature spring 7 integrated with the armature 6 also reversely oscillates, so that the leg 7b of the armature spring 7 The contact support member 13 is moved toward the base 15 while the leg of the return spring 10a supporting the contact support member 13 is bent while abutting on the contacted portion 13c of the contact support member 13 near one longitudinal end of the contact support member 13. Displace.

  At this time, the return spring 10a that has been compressed is returned and deformed by its own spring force, and the contact support member 13 supported by the returned and returned return spring 10a is displaced away from the base 15.

  As a result, the contact 14a penetratingly fixed to the contact support member 13 displaced toward the base 15 is displaced toward the base 15 from the state where it has been in contact with the sub-base 11, and the contact / separation surface 14c is displaced. The contact 14b, which abuts on the normally closed fixed terminal 17 and the common fixed terminal 19 and is fixed through the contact support member 13 displaced away from the base 15, is displaced away from the base 15 so that the sub-base 11 Contact

  In this high-frequency relay, similarly to the high-frequency relay of the first reference example, each of the fixed terminals 17, 18, and 19 can be connected to the surface of the printed circuit board as a so-called SMD terminal by soldering. The armature 14b is supported in an insulated state such that the contact / separation surface 14c is parallel to the mounting surface 15b. The armature spring 7 connected to the armature 6 transfers the driving force to the center of the armature 6 more than both ends. Since the transmission is made closer, it is possible to enhance the shielding property for the transmission path of the high-frequency signal.

  Even if the shield member S is not provided for each pole, the shield member S can be used for two poles, and the height can be easily reduced. Even the metal case 20 is shielded, and the support member 10 is inserted into the insertion hole of the sub base 11. Since the metal shield portion 10e is provided at a position corresponding to the periphery of the opening of the opening 11a, the shielding performance can be enhanced.

  The return spring 10a supporting the contact support member 13 supporting the contacts 14a and 14b is made of metal, and is electrically connected by its legs to the base 15 which is a component of the shield member S. In addition, shielding can be performed at a position where the contact supporting member 13 made of an insulating material is supported, and shielding performance can be improved.

  Further, since the outer surface of the base 15 is used as the mounting surface 15b, the ground can be sufficiently grounded, and the base 15 is processed into a predetermined shape by metal injection molding. The height can be reduced.

  Further, since the sub-base 11 and the base 15 are joined by laser welding, a sufficient shielding property can be obtained.

  Also, as compared with the high-frequency relay of the first reference example, the number of parts is reduced, and further, since the hinge spring 8 and the hinge pin 9 are not provided, there is no rotatably supported portion, and the friction associated with the rotation is eliminated. Does not occur, so that the operation can be further stabilized.

  The high-frequency relay of the present embodiment may have a configuration in which the sub-base 11 and the base 15 are bonded not only by laser welding but also with a conductive adhesive, similarly to the high-frequency relay of the second reference example. Even if a gap L as shown in FIG. 6 occurs between the sub-base 11 and the base 15, electrical connection between the sub-base 11 and the base 15 becomes possible, and the shielding property is secured. be able to.

  Further, similarly to the high-frequency relay of the third reference example, the high-frequency relay of the present embodiment may have a configuration in which the tips of the fixed terminals 17, 18, and 19 are inside the case when viewed from the direction orthogonal to the mounting surface 15b. In this case, the fixed terminals 17, 18, and 19 do not protrude outside the case 20, and the effect of increasing the shielding property against the transmission path of the high-frequency signal can be further obtained.

FIG. 3 is an exploded perspective view of a high-frequency relay according to a first reference example, excluding a case and an electromagnet block. It is a perspective view of the same case and an electromagnet block. It is a perspective view same as the above. It is sectional drawing same as the above. It is a perspective view of the base of the high frequency relay of the 2nd reference example. FIG. 4 is a partial cross-sectional view showing a state where a gap is generated between a base and a sub base. It is sectional drawing of a 3rd reference example. It is a bottom view same as the above. It is a perspective view same as the above. FIG. 2 is an exploded perspective view of the high-frequency relay according to the embodiment of the present invention, excluding a case and an electromagnet block. It is a perspective view of the same case and an electromagnet block. It is sectional drawing same as the above. It is an exploded perspective view of a conventional example. The same is a partial front view showing the state mounted on the printed circuit board.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Iron core 3 Coil 6 Armature 6c Oscillating fulcrum 7 Armature spring (drive member)
8 Hinge spring (relay member)
8a Transmitted part 10 Support member 10a Return spring (support part)
10b Connecting plate (supporting part)
10e shield part 11 sub-base (first shield material)
11a insertion hole 13 contact support member 14a contact 14b contact 14c contact / separation surface 15 base (second shield material)
15b Mounting surface 17 Normally closed side fixed terminal 18 Normally opened side fixed terminal 19 Common fixed terminal 20 Case 40a Electromagnet S Shield member

Claims (3)

An electromagnet in which a coil is wound around an iron core, a fixed terminal connected to the outside, a contact driven to move toward and away from the fixed terminal, and an excitation of the coil to obtain a driving force for driving the contact. Armature that is attracted to and separated from the iron core, and a high-frequency relay having a mounting surface mounted externally,
The contact has a plate shape having a contact / separation surface that comes into contact with / separates from the fixed terminal, and supports the contact in an insulating state such that the contact / separation surface is parallel to the mounting surface.
A metal shield member for shielding a contact / separation portion between the contact and the fixed terminal is provided, and the shield member is formed by a sub-base which is a component thereof and a base having an outer bottom surface serving as the mounting surface. Are joined along the orthogonal direction of the contact / separation surface, and provided so as to sandwich the contact from the orthogonal direction of the contact / separation surface,
A contact support member made of an insulating material for supporting said contact, wherein said contact support member is integrated with a contacted portion through which said contact is fixedly fixed to a base and to which a driving force by an armature is transmitted. A return spring for supporting the member movably along the direction perpendicular to the contact / separation surface is provided.The return spring is made of metal made of a plate-like metal spring material. By being placed on the base while being positioned on the base, the sub-base is electrically connected to the base, and the sub-base has an insertion hole through which the contacted part of the contact support member is inserted. Provided, the return spring is disposed at a position corresponding to the opening of the insertion hole of the sub-base,
The armature performs a seesaw operation with the central portion on one side being a swing fulcrum when both ends are attracted and separated from the iron core, and the fixed terminal is opposed to one contact so as to be able to contact and separate from the other contact. Is fixed to an insulator integrated with one end of the base, the inner tip is located near one end of the armature, and the fixed terminal facing the other contact so as to be able to contact and separate is the other end of the base. A fixed terminal that is fixed to the insulator integrated with the portion and whose inner end is located near the other end of the armature, and that is fixed to the central portion of the base is a fixed terminal that opposes the two contacts so as to be able to contact and separate. The fixed terminal is fixed to an insulator and provided at a central portion of the armature, and the fixed terminal is fixedly penetrated to the insulator, and an outer end of the fixed terminal is outside the base. With a central piece and a leg piece An armature spring that transmits the driving force closer to the center than both ends of the armature has a center piece connected to the center of the other surface of the armature, and the contact support member has When the leg pieces of the armature spring abut, the driving force of the armature is transmitted to deflect the return spring supporting the contact support member, displace the contact support member toward the base, and the contact is moved to the sub-base. The contact return member is displaced toward the base from the state where it has been in contact with the base, the contact / separation surface contacts the fixed terminal, and the compressed return spring returns and deforms due to its own spring force to move the contact support member into the base. The contact fixed to the contact support member displaced away from the base and displaced away from the base is displaced away from the base and contacts the sub-base High frequency relay which is characterized the door.   2. The high-frequency relay according to claim 1, wherein the fixed terminals are arranged substantially on the same plane as the mounting surface.   The high-frequency relay according to claim 1, wherein the mounting surface is grounded.

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