Electromagnetic relay

Abstract

The invention provides an electromagnetic relay which can be stably mounted on a substrate regardless of the arrangement of terminals. The electromagnetic relay includes a base, a pedestal, a first contact terminal, and a second contact terminal. The pedestal is separated from the base and is arranged below the base. The pedestal includes a first aperture and a second aperture. The first hole and the second hole extend in the vertical direction, respectively. The first contact terminal extends downward from the base through the first hole. The first contact terminal comprises a first bending part which is bent along the bottom surface of the pedestal. The second contact terminal extends downward from the base through the second hole. The second contact terminal comprises a second bending part which is bent along the bottom surface of the pedestal.

Description

Technical Field

[0001] The invention relates to an electromagnetic relay. Background Art

[0002] There are so-called surface-mounted electromagnetic relays. For example, as disclosed in Patent Document 1, in a surface-mounted electromagnetic relay, a terminal protrudes downward from a base and has a bent portion bent toward the side. The electromagnetic relay is mounted on a substrate by soldering the bent portion to the substrate.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2016-201306 Summary of the invention

[0006] Problems to be solved by the invention

[0007] As a method of mounting an electromagnetic relay on a substrate, there is reflow soldering. In reflow soldering, solder is placed on the substrate in advance, and an electromagnetic relay is arranged thereon. Then, the electromagnetic relay is soldered to the substrate by heating the solder in a reflow furnace. By using such reflow soldering, the electromagnetic relay can be efficiently mounted on the substrate.

[0008] However, in the above-mentioned surface-mounted electromagnetic relay, depending on the configuration of the terminals, the balance in the state of being configured on the substrate is poor, and it is sometimes difficult to install on the substrate. For example, in the case where the terminals are asymmetrically configured on the bottom surface of the base, the electromagnetic relay is sometimes unable to maintain its posture and tilts when placed on the substrate. In this case, it is difficult to install by the above-mentioned reflow soldering. Alternatively, since the electromagnetic relay is configured unstably, the accuracy of installation on the substrate may be reduced. The object of the present invention is to provide an electromagnetic relay that can be stably installed on a substrate regardless of the configuration of the terminals.

[0009] Solutions to Solve Problems

[0010] An electromagnetic relay of one embodiment of the present invention comprises a base, a pedestal, a first contact terminal and a second contact terminal. The pedestal is separate from the base and is arranged below the base. The pedestal includes a first hole and a second hole. The first hole and the second hole extend in the up-down direction respectively. The first contact terminal extends downward from the base through the first hole. The first contact terminal includes a first bent portion bent along the bottom surface of the pedestal. The second contact terminal extends downward from the base through the second hole. The second contact terminal includes a second bent portion bent along the bottom surface of the pedestal.

[0011] In the electromagnetic relay of this embodiment, the pedestal suppresses the inclination of the electromagnetic relay when it is arranged on the substrate. Therefore, the posture of the electromagnetic relay before soldering can be stably maintained on the substrate. Thus, the electromagnetic relay can be stably mounted on the substrate.

[0012] The pedestal may also include a first groove and a second groove. The first groove may also be provided on the bottom surface of the pedestal for configuring the first bending portion. The second groove may also be provided on the bottom surface of the pedestal for configuring the second bending portion. In this case, the bottom surface of the pedestal is configured closer to the substrate. Thus, the posture of the electromagnetic relay can be maintained more stably on the substrate.

[0013] The first bent portion and the second bent portion may be arranged asymmetrically on the bottom surface of the pedestal. In this way, even if the arrangement of the terminals of the electromagnetic relay is unstable, the pedestal can stably maintain the posture of the electromagnetic relay on the substrate.

[0014] The first bent portion and the second bent portion may also be arranged on the bottom surface of the pedestal at the first side of the center line of the bottom surface of the pedestal. In this way, even if the terminal arrangement of the electromagnetic relay is unstable, the pedestal can stably maintain the posture of the electromagnetic relay on the substrate.

[0015] The pedestal may also include a third hole and a fourth hole. The third hole and the fourth hole may also extend in the up-down direction. The electromagnetic relay may also include a first coil terminal and a second coil terminal. The first coil terminal may also extend downward through the third hole. The first coil terminal may also include a third bent portion bent along the bottom surface of the pedestal. The second coil terminal may also extend downward through the fourth hole. The second coil terminal may also include a fourth bent portion bent along the bottom surface of the pedestal.

[0016] The first bending portion, the second bending portion, the third bending portion and the fourth bending portion can also be arranged on the bottom surface of the pedestal on the first side of the center line of the bottom surface of the pedestal. In this way, even if the terminal arrangement of the electromagnetic relay is unstable, the pedestal can stably maintain the posture of the electromagnetic relay on the substrate.

[0017] The electromagnetic relay may also include an auxiliary terminal. The auxiliary terminal may also be arranged on the bottom surface of the pedestal at a second side opposite to the first side relative to the center line of the bottom surface of the pedestal. In this case, the auxiliary terminal can more stably maintain the posture of the electromagnetic relay on the substrate. In addition, by soldering the auxiliary terminal to the substrate, the bonding strength between the electromagnetic relay and the substrate is improved.

[0018] The bottom surface of the pedestal may also include a first area, a second area, a third area, and a fourth area. The second area may also be arranged symmetrically with the first area relative to a first center line extending along the length direction of the bottom surface. The third area may also be arranged symmetrically with the first area relative to a second center line orthogonal to the first center line. The fourth area may also be arranged symmetrically with the second area relative to the second center line. The first bending portion may also be arranged in the first area. The second bending portion may also be arranged in the first area or the third area. The third bending portion may also be arranged in the third area. The fourth bending portion may also be arranged in the fourth area. In this way, even if the terminal configuration of the electromagnetic relay is unstable, the posture of the electromagnetic relay can be stably maintained on the substrate by the pedestal.

[0019] The electromagnetic relay may also include at least one auxiliary terminal. The at least one auxiliary terminal may also be arranged on the bottom surface of the pedestal in an area where the first to fourth bending portions are not arranged in the first to fourth areas. In this case, the auxiliary terminal can be used to more stably maintain the posture of the electromagnetic relay on the substrate. In addition, by soldering the auxiliary terminal to the substrate, the bonding strength between the electromagnetic relay and the substrate is improved.

[0020] The electromagnetic relay may further include an auxiliary terminal provided at least one of the first bent portion, the second bent portion, the third bent portion, and the fourth bent portion. In this case, the auxiliary terminal is soldered to the substrate to increase the bonding strength between the electromagnetic relay and the substrate.

[0021] The pedestal may also include a third groove and a fourth groove. The third groove may also be provided on the bottom surface of the pedestal. The third bending portion may also be arranged in the third groove. The fourth groove may also be provided on the bottom surface of the pedestal. The fourth bending portion may also be arranged in the fourth groove. In this case, the bottom surface of the pedestal is arranged closer to the substrate. Thus, the posture of the electromagnetic relay can be maintained more stably on the substrate.

[0022] The pedestal may also include a bottom plate and side walls. The bottom plate may also include the bottom surface of the pedestal. The side walls may also extend upward from the bottom plate. The side walls may also be arranged around the pedestal. In this case, the movement of the pedestal is limited by the side walls of the pedestal. Thus, the vibration resistance of the electromagnetic relay is improved.

[0023] The side wall may also include a recessed portion that is recessed downward. In this case, the pedestal can be easily loaded and unloaded relative to the base. The side wall may also include a first side wall, a second side wall, a third side wall, and a fourth side wall. The first side wall may also be arranged on the left side of the base. The second side wall may also be arranged on the right side of the base. The third side wall may also be arranged in front of the base. The fourth side wall may also be arranged at the rear of the base.

[0024] The electromagnetic relay of another embodiment of the present invention comprises a base, a pedestal, a first coil terminal and a second coil terminal. The pedestal is separate from the base and is arranged below the base. The pedestal includes a third hole and a fourth hole. The third hole and the fourth hole extend in the up-down direction respectively. The first coil terminal extends downward from the base through the third hole. The first coil terminal includes a third bent portion bent along the bottom surface of the pedestal. The second coil terminal extends downward from the base through the fourth hole. The second coil terminal includes a fourth bent portion bent along the bottom surface of the pedestal.

[0025] In the electromagnetic relay of this embodiment, the pedestal suppresses the inclination of the electromagnetic relay when it is arranged on the substrate. Therefore, the posture of the electromagnetic relay before soldering can be stably maintained on the substrate. Thus, the electromagnetic relay can be stably mounted on the substrate.

[0026] Effects of the Invention

[0027] According to the present invention, it is possible to provide an electromagnetic relay that can be stably mounted on a substrate regardless of the arrangement of the terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a perspective view of the electromagnetic relay according to the embodiment.

[0029] Figure 2 It is a three-dimensional diagram of an electromagnetic relay.

[0030] Figure 3 This is a bottom view of the electromagnetic relay.

[0031] Figure 4 This is an exploded perspective view of an electromagnetic relay.

[0032] Figure 5 This is a side view of the relay body with the case omitted.

[0033] Figure 6 This is a side view of the relay body with the case omitted.

[0034] Figure 7 This is a bottom view of the relay body.

[0035] Figure 8 yes Figure 3 Section view VIII-VIII in FIG.

[0036] Fig. 9 yes Figure 3 IX-IX section view in.

[0037] Fig.10 This is a top view of the pedestal.

[0038] Fig.11 This is a bottom view of the pedestal.

[0039] Fig.12 It is a bottom view of the electromagnetic relay according to the first modification.

[0040] Fig.13 It is a bottom view of the electromagnetic relay according to the second modification.

[0041] Fig.14 It is a bottom view of the electromagnetic relay of the third modification.

[0042] Fig.15 It is a bottom view of the electromagnetic relay according to the fourth modification.

[0043] Fig.16 It is a perspective view of an electromagnetic relay according to a fifth modification.

[0044] Fig.17 It is a perspective view of an electromagnetic relay according to a sixth modification.

[0045] Explanation of symbols

[0046] 3…pedestal; 5…base; 6…fixed contact; 7…movable contact; 8…first contact terminal; 9…second contact terminal; 16…first bending portion; 18…second bending portion; 28…first coil terminal; 29…second coil terminal; 42…third bending portion; 44…fourth bending portion; 61…bottom plate; 62…side wall; 81…first pedestal hole; 82…second pedestal hole; 83…third pedestal hole; 84…fourth pedestal hole; 85…first slot; 86…second slot; 87…third slot; 88…fourth slot; 89…auxiliary terminal; A1…first area; A2…second area; A3…third area; A4…fourth area; C1…first center line; C2…second center line. DETAILED DESCRIPTION

[0047] Hereinafter, an electromagnetic relay according to an embodiment will be described with reference to the drawings. Figure 1 and Figure 2 It is a perspective view of the electromagnetic relay 1 according to the embodiment. Figure 3 It is a bottom view of the electromagnetic relay 1. Figure 4 1 is an exploded perspective view of the electromagnetic relay 1. The electromagnetic relay 1 is a surface-mounted relay. Figures 1 to 4 As shown, the electromagnetic relay 1 includes a relay body 2 and a base 3 .

[0048] like Figure 4 As shown, the relay body 2 includes a housing 4 . Figure 5 and Figure 6 It is a side view of the relay body 2 with the case 4 omitted. Figure 7 FIG. 2 is a bottom view of the relay body 2. Figures 5 to 7As shown, the relay body 2 includes a base 5 , a fixed contact 6 , a movable contact 7 , a first contact terminal 8 , and a second contact terminal 9 .

[0049] In addition, in the following description, the direction in which the fixed contact 6 and the movable contact 7 are arranged relative to the base 5 is defined as the upper direction, and the opposite direction thereof is defined as the lower direction. The direction in which the movable contact 7 is arranged relative to the fixed contact 6 is defined as the front direction, and the opposite direction thereof is defined as the rear direction. Furthermore, the left and right sides when facing the front direction are defined as the left and right sides, respectively. The above directions are used for the convenience of description and do not limit the configuration of the electromagnetic relay 1, etc.

[0050] The fixed contact 6 and the movable contact 7 are made of a conductive metal. The fixed contact 6 and the movable contact 7 are arranged above the base 5. The movable contact 7 is arranged opposite to the fixed contact 6. The fixed contact 6 is connected to the first contact terminal 8. The movable contact 7 is connected to the second contact terminal 9. The first contact terminal 8 and the second contact terminal 9 are made of a conductive metal. The second contact terminal 9 is arranged opposite to the first contact terminal 8. The first contact terminal 8 and the second contact terminal 9 are supported by the base 5. The base 5 is made of resin, for example. The first contact terminal 8 and the second contact terminal 9 extend upward from the base 5. The first contact terminal 8 and the second contact terminal 9 protrude downward from the base 5 to the outside of the relay body 2.

[0051] Figure 8 yes Figure 3 The VIII-VIII section view in FIG. Figure 8 As shown, the base 5 includes a first base hole 11 and a second base hole 12. The first contact terminal 8 is pressed into the first base hole 11. The first contact terminal 8 protrudes downward from the base 5 through the first base hole 11. The second contact terminal 9 is pressed into the second base hole 12. The second contact terminal 9 protrudes downward from the base 5 through the second base hole 12.

[0052] The first contact terminal 8 includes a first straight portion 15 and a first bent portion 16. The first straight portion 15 extends downward from the base 5 through the first base hole 11. The first bent portion 16 is bent relative to the first straight portion 15. The first bent portion 16 extends rearward from the first straight portion 15. The second contact terminal 9 includes a second straight portion 17 and a second bent portion 18. The second straight portion 17 extends downward from the base 5 through the second base hole 12. The second bent portion 18 is bent relative to the second straight portion 17. The second bent portion 18 extends forward from the second straight portion 17.

[0053] like Figure 5 As shown, the relay body 2 includes a coil assembly 20, a clip 21, an armature 22, and a return spring 23. The coil assembly 20 generates an electromagnetic force that moves the movable contact 7 between the open position and the closed position. Figure 5 As shown in FIG. 1 , when the movable contact 7 is in the disconnected position, the movable contact 7 is away from the fixed contact 6. Figure 6 As shown, when the movable contact 7 is in the closed position, the movable contact 7 is in contact with the fixed contact 6. The coil assembly 20 includes a coil 24, a bobbin 25, an iron core 26, a yoke 27, a first coil terminal 28 and a second coil terminal 29.

[0054] The coil 24 is wound on the winding drum 25. Although not shown in the figure, the ends of the coil 24 are connected to the first coil terminal 28 and the second coil terminal 29, respectively. The winding drum 25 is supported by the base 5. The winding drum 25 includes a barrel 31, an upper flange 32 and a lower flange 33. The coil 24 is wound on the barrel 31. The upper flange 32 and the lower flange 33 protrude radially from the barrel 31. The upper flange 32 is arranged above the barrel 31. The lower flange 33 is arranged below the barrel 31.

[0055] The iron core 26 is arranged in the winding drum 25. The yoke 27 has a shape bent into an L shape. The yoke 27 includes a first yoke portion 34 and a second yoke portion 35. The yoke 27 is bent between the first yoke portion 34 and the second yoke portion 35. The first yoke portion 34 is arranged below the iron core 26. The first yoke portion 34 is connected to the iron core 26. The second yoke portion 35 extends upward from the first yoke portion 34.

[0056] The first coil terminal 28 and the second coil terminal 29 are supported by the reel 25 and the base 5. The first coil terminal 28 and the second coil terminal 29 extend upward from the reel 25. The first coil terminal 28 and the second coil terminal 29 protrude downward from the base 5 to the outside of the relay body 2.

[0057] Fig. 9 yes Figure 3 The IX-IX section view in Figure 1. Fig. 9 As shown, the spool 25 includes a first spool hole 36 and a second spool hole 37. The first spool hole 36 and the second spool hole 37 are provided at the lower flange 33. The base 5 includes a third base hole 13 and a fourth base hole 14.

[0058] The first coil terminal 28 is pressed into the first winding drum hole 36. Alternatively, the first coil terminal 28 may be pressed into the third base hole 13. The first coil terminal 28 protrudes downward from the base 5 through the first winding drum hole 36 and the third base hole 13. The second coil terminal 29 is pressed into the second winding drum hole 37. Alternatively, the second coil terminal 29 may be pressed into the fourth base hole 14. The second coil terminal 29 protrudes downward from the base 5 through the second winding drum hole 37 and the fourth base hole 14.

[0059] The first coil terminal 28 includes a third straight portion 41 and a third bent portion 42. The third straight portion 41 extends downward from the base 5 through the third base hole 13. The third bent portion 42 is bent relative to the third straight portion 41. The third bent portion 42 extends to the left side from the third straight portion 41. The second coil terminal 29 includes a fourth straight portion 43 and a fourth bent portion 44. The fourth straight portion 43 extends downward from the base 5 through the fourth base hole 14. The fourth bent portion 44 is bent relative to the fourth straight portion 43. The fourth bent portion 44 extends to the right side from the fourth straight portion 43.

[0060] like Figure 5 As shown, the card 21 includes a rotating shaft 51, a pressing portion 52, and a receiving portion 53. The rotating shaft 51 is rotatably supported by the base 5. The pressing portion 52 is disposed opposite to the second contact terminal 9. The receiving portion 53 is disposed opposite to the armature 22.

[0061] The armature 22 includes a first armature portion 54 and a second armature portion 55. The armature 22 has a shape bent between the first armature portion 54 and the second armature portion 55. The first armature portion 54 is arranged above the iron core 26. The first armature portion 54 is arranged opposite to the iron core 26. The second armature portion 55 extends downward from the first armature portion 54. The second armature portion 55 is arranged opposite to the receiving portion 53 of the clamping member 21.

[0062] The armature 22 is supported by the second yoke portion 35. The armature 22 is supported to be rotatable around the upper end of the second yoke portion 35. The return spring 23 is connected to the armature 22. The return spring 23 is a hinge spring. The return spring 23 applies force to the armature 22 in the direction in which the second armature portion 55 is away from the receiving portion 53 of the clip 21.

[0063] Next, the operation of the relay body 2 will be described. In the following description, the direction in which the movable contact 7 approaches the fixed contact 6 is defined as the closing direction, and the direction in which the movable contact 7 moves away from the fixed contact 6 is defined as the opening direction. Figure 5 As shown, the movable contact 7 is away from the fixed contact 6 .

[0064] When current flows through the coil 24, the first armature portion 54 is attracted to the iron core 26 by the electromagnetic force generated by the coil 24. As a result, the armature 22 overcomes the force of the return spring 23 and rotates. When the armature 22 rotates, the second armature portion 55 presses the receiving portion 53 of the clip 21 in the closing direction. As a result, the clip 21 rotates in the closing direction, and the pressing portion 52 of the clip 21 presses the second contact terminal 9 in the closing direction. The second contact terminal 9 is elastically deformed by being pressed by the pressing portion 52, and as a result, Figure 6 As shown, the movable contact 7 moves in the closing direction and contacts the fixed contact 6.

[0065] If the current flowing to the coil 24 is cut off, the electromagnetic force of the iron core 26 attracting the first armature part 54 disappears. Therefore, the armature 22 rotates in the opposite direction to the above by the force of the return spring 23. As a result, the clamp 21 rotates in the disconnection direction, and the second contact terminal 9 moves in the disconnection direction by the elastic force of the second contact terminal 9. As a result, the movable contact 7 moves in the disconnection direction and moves away from the fixed contact 6.

[0066] Next, the base 3 will be described. Figure 4 As shown, the pedestal 3 is separate from the base 5. The pedestal 3 is made of resin, for example. The pedestal 3 is arranged below the base 5. Fig.10 It is a top view of the pedestal 3. Fig.11 is a bottom view of the pedestal 3. Figure 4 and Fig.10 As shown, the pedestal 3 has a box-like shape having an opening 60 opened upward. The relay body 2 is arranged in the opening 60 of the pedestal 3 .

[0067] The pedestal 3 includes a bottom plate 61 and a side wall 62. The bottom plate 61 is disposed below the base 5. The bottom plate 61 includes a bottom surface 63 of the pedestal 3. The bottom plate 61 supports the base 5. The side wall 62 extends upward from the bottom plate 61. The side wall 62 is disposed so as to surround the base 5. The upper end of the side wall 62 is located below the upper surface of the housing 4. The side wall 62 is disposed so as to surround a portion of the housing 4. Figure 8 and Fig. 9 As shown, the upper end of the side wall 62 is located above the upper surface of the lower flange 33 of the spool 25 .

[0068] Specifically, the side wall 62 includes a first side wall 64, a second side wall 65, a third side wall 66, and a fourth side wall 67. The first side wall 64 is arranged on the left side of the base 5. The second side wall 65 is arranged on the right side of the base 5. The third side wall 66 is arranged in front of the base 5. The fourth side wall 67 is arranged in the rear of the base 5. The first side wall 64 includes a first recessed portion 68. The first recessed portion 68 is recessed downward from the upper end of the first side wall 64. The second side wall 65 includes a second recessed portion 69. The second recessed portion 69 is recessed downward from the upper end of the second side wall 65.

[0069] like Fig.10 As shown, a plurality of protrusions 71 to 78 are provided on the inner surface of the side wall 62. The relay body 2 is fixed to the base 3 by press-fitting. The plurality of protrusions 71 to 78 are in contact with the housing 4 of the relay body 2. Fig.10 and Fig.11 As shown, the pedestal 3 includes a first pedestal hole 81, a second pedestal hole 82, a third pedestal hole 83 and a fourth pedestal hole 84. The first pedestal hole 81 to the fourth pedestal hole 84 extend in the bottom plate 61 of the pedestal 3 in the up-down direction.

[0070] like Fig.11 As shown, the pedestal 3 includes a first groove 85, a second groove 86, a third groove 87 and a fourth groove 88. The first groove 85, the second groove 86, the third groove 87 and the fourth groove 88 are provided on the bottom surface 63 of the pedestal 3. The first groove 85, the second groove 86, the third groove 87 and the fourth groove 88 are recessed upward from the bottom surface 63 of the pedestal 3. The first groove 85 extends rearward from the first pedestal hole 81. The second groove 86 extends forward from the second pedestal hole 82. The third groove 87 extends to the left side from the third pedestal hole 83. The fourth groove 88 extends to the right side from the fourth pedestal hole 84.

[0071] The first pedestal hole 81 and the first groove 85 are arranged corresponding to the first contact terminal 8. The second pedestal hole 82 and the second groove 86 are arranged corresponding to the second contact terminal 9. The third pedestal hole 83 and the third groove 87 are arranged corresponding to the first coil terminal 28. The fourth pedestal hole 84 and the fourth groove 88 are arranged corresponding to the second coil terminal 29.

[0072] like Figure 8 As shown, the first straight portion 15 of the second contact terminal 9 extends downward from the base 5 through the first pedestal hole 81. The first bent portion 16 of the first contact terminal 8 is bent along the bottom surface 63 of the pedestal 3. The first bent portion 16 is arranged in the first groove 85. At least a portion of the first bent portion 16 protrudes slightly downward from the first groove 85 than the bottom surface 63. The second straight portion 17 of the second contact terminal 9 extends downward from the base 5 through the second pedestal hole 82. The second bent portion 18 of the second contact terminal 9 is bent along the bottom surface 63 of the pedestal 3. The second bent portion 18 is arranged in the second groove 86. At least a portion of the second bent portion 18 protrudes slightly downward from the second groove 86 than the bottom surface 63.

[0073] like Fig. 9 As shown. The third straight portion 41 of the first coil terminal 28 extends downward from the base 5 through the third pedestal hole 83. The third bent portion 42 of the first coil terminal 28 is bent along the bottom surface 63 of the pedestal 3. The third bent portion 42 is arranged in the third groove 87. At least a portion of the third bent portion 42 protrudes slightly downward from the third groove 87 than the bottom surface 63. The fourth straight portion 43 of the second coil terminal 29 extends downward from the base 5 through the fourth pedestal hole 84. The fourth bent portion 44 of the second coil terminal 29 is bent along the bottom surface 63 of the pedestal 3. The fourth bent portion 44 is arranged in the fourth groove 88. At least a portion of the fourth bent portion 44 protrudes slightly downward from the fourth groove 88 than the bottom surface 63. The first bent portion 16, the second bent portion 18, the third bent portion 42 and the fourth bent portion 44 are arranged on the same plane.

[0074] like Figure 3As shown, the first bent portion 16 of the first contact terminal 8 and the second bent portion 18 of the second contact terminal 9 are asymmetrically arranged on the bottom surface 63 of the base 3. In detail, the first bent portion 16 and the second bent portion 18 are asymmetrically arranged relative to the center line of the bottom surface 63. The center line of the bottom surface 63 includes a first center line C1 and a second center line C2. The first center line C1 extends along the length direction of the bottom surface 63. In this embodiment, the length direction of the bottom surface 63 is the front-to-back direction. The second center line C2 is orthogonal to the first center line C1. That is, the second center line C2 extends along the left-right direction.

[0075] The first bending portion 16 and the second bending portion 18 are arranged on the left side of the first center line C1 in the bottom surface 63 of the base 3. The base 3 includes an auxiliary terminal 89. The auxiliary terminal 89 can also be a dummy terminal through which no current passes. The auxiliary terminal 89 is mounted on the bottom surface 63 of the base 3. The auxiliary terminal 89 is made of metal. The auxiliary terminal 89 is arranged on the same plane relative to the first bending portion 16, the second bending portion 18, the third bending portion 42 and the fourth bending portion 44. The auxiliary terminal 89 is arranged on the opposite side of the first bending portion 16 and the second bending portion 18 relative to the first center line C1. That is, the auxiliary terminal 89 is arranged on the right side of the first center line C1.

[0076] The bottom surface 63 of the pedestal 3 includes a first area A1, a second area A2, a third area A3, and a fourth area A4. The second area A2 is symmetrically arranged with respect to the first center line C1 with respect to the first area A1. The third area A3 is symmetrically arranged with respect to the first area A1 with respect to the second center line C2. The fourth area A4 is symmetrically arranged with respect to the second area A2 with respect to the second center line C2. The fourth area A4 is symmetrically arranged with respect to the first center line C1 with respect to the third area A3.

[0077] The first pedestal hole 81 and the first groove 85 are located in the first area A1. The second pedestal hole 82 and the second groove 86 are arranged in the first area A1. The third pedestal hole 83 and the third groove 87 are arranged in the third area A3. The fourth pedestal hole 84 and the fourth groove 88 are arranged in the fourth area A4.

[0078] The first bent portion 16 of the first contact terminal 8 and the second bent portion 18 of the second contact terminal 9 are arranged in the first area A1. The third bent portion 42 of the first coil terminal 28 is arranged in the third area A3. The fourth bent portion 44 of the second coil terminal 29 is arranged in the fourth area A4. The auxiliary terminal 89 is arranged in the area of ​​the first area A1 to the fourth area A4 where the first to fourth bent portions 16, 18, 42, 44 are not arranged. That is, the auxiliary terminal 89 is arranged in the second area A2.

[0079] In the electromagnetic relay 1 of the present embodiment described above, the tilt of the electromagnetic relay 1 when arranged on the substrate is suppressed by the pedestal 3. Therefore, the posture of the electromagnetic relay 1 before soldering can be stably maintained on the substrate. Thus, the electromagnetic relay 1 can be stably mounted on the substrate.

[0080] As mentioned above, although one embodiment of the present invention has been described, the present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the gist of the invention.

[0081] The structure of the base 5 is not limited to the above-mentioned embodiment and may be changed. The structure of the fixed contact 6, the movable contact 7, the first contact terminal 8, and the second contact terminal 9 is not limited to the above-mentioned embodiment and may be changed. For example, the fixed contact 6 may be separated from the first contact terminal 8, or may be integrated. The movable contact 7 may be separated from the second contact terminal 9, or may be integrated. The fixed contact 6 may be connected to the second contact terminal 9. The movable contact 7 may be connected to the first contact terminal 8.

[0082] The bending directions of the first to fourth bending portions 16, 18, 42, and 44 are not limited to the above-described embodiments and may be changed. Fig.12 FIG. 1 is a bottom view of the electromagnetic relay 1 of the first variant. Fig.12 As shown, the first to fourth bent portions 16, 18, 42, 44 are bent toward the inner side of the bottom surface 63 of the pedestal 3 in a manner that they do not extend outward from the bottom surface 63 of the pedestal 3. The first bent portion 16 and the second bent portion 18 may also be bent in the same direction. The third bent portion 42 and the fourth bent portion 44 may also be bent in the same direction. Fig.13 FIG. 1 is a bottom view of the electromagnetic relay 1 of the second modified example. Fig.13 As shown, the first bending portion 16 and the second bending portion 18 are not limited to the front-to-back direction, but can also be bent in the left-to-right direction. Fig.12 As shown, the third bending portion 42 and the fourth bending portion 44 are not limited to bending in the left-right direction, but may also be bent in the front-back direction. The first bending portion 16 and the second bending portion 18 may also be bent in mutually opposite directions. The third bending portion 42 and the fourth bending portion 44 may also be bent in mutually opposite directions.

[0083] The arrangement of the first to fourth bent portions 16, 18, 42, and 44 is not limited to the above-described embodiment, and may be changed. Fig.14 FIG. 1 is a bottom view of the electromagnetic relay 1 of the third variant. Fig.14 As shown, the first to fourth bent portions 16 , 18 , 42 , and 44 are all arranged on the same side with respect to the first center line C1 .

[0084] The auxiliary terminal is not limited to one, and multiple auxiliary terminals may be provided. Fig.14 As shown, the plurality of auxiliary terminals 89A and 89B are arranged on the opposite side of the first to fourth bent portions 16 , 18 , 42 , and 44 with respect to the first center line C1 . Fig.14 The auxiliary terminals 89A and 89B shown may also be dummy terminals through which no current flows. Alternatively, an auxiliary terminal may be provided relative to at least one of the first to fourth bends 16, 18, 42, and 44. For example, Fig.15 FIG. 1 is a bottom view of the electromagnetic relay 1 of the fourth variant. Fig.15 As shown, auxiliary terminals 89A to 89D are provided for the first to fourth bent portions 16, 18, 42, and 44, respectively. Fig.15 In the electromagnetic relay 1 of the fourth modification shown, the auxiliary terminals 89A to 89D may be energized similarly to the first contact terminal 8, the second contact terminal 9, the first coil terminal 28, and the second coil terminal 29. Alternatively, the auxiliary terminals may be omitted.

[0085] The structures of the coil assembly 20, the clip 21, the armature 22, and the return spring 23 are not limited to the above-mentioned embodiment, and may be changed. For example, the clip 21 may move linearly.

[0086] The structure of the pedestal 3 is not limited to the above-mentioned embodiment and can also be changed. The side wall 62 of the pedestal 3 can be in contact with at least a portion of each of the four side walls of the housing 4. For example, Fig.16 FIG. 1 is a perspective view of an electromagnetic relay 1 according to a fifth variation. Fig.16 As shown, the first recess 68 and the second recess 69 of the side wall 62 are omitted. Alternatively, Fig.17 FIG. 1 is a perspective view of an electromagnetic relay 1 according to a sixth variation. Fig.17 As shown, the third side wall 66 and the fourth side wall 67 are provided with a third recess 91 and a fourth recess 92, respectively. Alternatively, the side wall 62 may be omitted. The groove may be omitted in the bottom surface 63 of the pedestal 3. The method of fixing the relay body 2 and the pedestal 3 is not limited to press-fitting, and may also be changed. For example, the relay body 2 and the pedestal 3 may be fixed to each other by snap-fitting.

[0087] Industrial Applicability

[0088] According to the present invention, it is possible to provide an electromagnetic relay that can be stably mounted on a substrate regardless of the arrangement of the terminals.

Claims

1. An electromagnetic relay, characterized in that: have: Pedestal; A pedestal, which is separate from the base, is disposed below the base, and includes a first hole extending in the up-down direction and a second hole extending in the up-down direction; A first contact terminal extending downward from the base through the first hole and comprising a first bent portion bent along the bottom surface of the base; as well as The second contact terminal extends downward from the base through the second hole and includes a second bent portion bent along the bottom surface of the base.

2. The electromagnetic relay according to claim 1, characterized in that: The pedestal comprises: a first groove, which is disposed on the bottom surface of the base and is used to dispose the first bending portion; and The second groove is arranged on the bottom surface of the base and is used for arranging the second bending portion.

3. The electromagnetic relay according to claim 1, characterized in that: The first bent portion and the second bent portion are asymmetrically arranged on the bottom surface of the base.

4. The electromagnetic relay according to claim 3, characterized in that: The first bent portion and the second bent portion are arranged on a first side of a center line of the bottom surface of the base on the bottom surface of the base.

5. The electromagnetic relay according to claim 1, characterized in that: The pedestal comprises: A third hole extending in the up-down direction; and a fourth hole extending in the up-down direction, The pedestal also has: a first coil terminal extending downward through the third hole and comprising a third bent portion bent along the bottom surface of the base; and The second coil terminal extends downward through the fourth hole and includes a fourth bent portion bent along the bottom surface of the base.

6. The electromagnetic relay according to claim 5, characterized in that: The first bent portion, the second bent portion, the third bent portion, and the fourth bent portion are arranged on a first side of a center line of the bottom surface of the base on the bottom surface of the base.

7. The electromagnetic relay according to claim 4 or 6, characterized in that: The invention further includes an auxiliary terminal disposed on the bottom surface of the base at a second side opposite to the first side with respect to a center line of the bottom surface of the base.

8. The electromagnetic relay according to claim 5, characterized in that: The bottom surface of the pedestal comprises: First region; a second region disposed symmetrically with respect to a first center line extending along a length direction of the bottom surface and the first region; a third region arranged symmetrically with respect to a second center line orthogonal to the first center line with respect to the first region; and a fourth region, which is arranged symmetrically with respect to the second center line with respect to the second region, The first bending portion is disposed in the first area, The second bending portion is disposed in the first region or the third region, The third bending portion is arranged in the third area, The fourth bending portion is disposed in the fourth region.

9. The electromagnetic relay according to claim 8, characterized in that: The device further includes at least one auxiliary terminal, which is disposed on the bottom surface of the base in an area of ​​the first to fourth areas where the first to fourth bent portions are not disposed.

10. The electromagnetic relay according to claim 5, characterized in that: An auxiliary terminal is further provided, and the auxiliary terminal is provided on at least one of the first bent portion, the second bent portion, the third bent portion, and the fourth bent portion.

11. The electromagnetic relay according to claim 5, characterized in that: The pedestal comprises: a third groove, which is disposed on the bottom surface of the base and is used to dispose the third bending portion; and A fourth groove is provided on the bottom surface of the base and is used for configuring the fourth bending portion.

12. The electromagnetic relay according to claim 1, characterized in that: The pedestal comprises: a bottom plate comprising the bottom surface; and The side wall extends upward from the bottom plate and is arranged around the base.

13. The electromagnetic relay according to claim 12, characterized in that: The side wall includes a concave portion recessed downward.

14. The electromagnetic relay according to claim 12, characterized in that: The side wall comprises: A first side wall, which is disposed on the left side of the base; A second side wall, which is disposed on the right side of the base; a third side wall disposed in front of the base; as well as The fourth side wall is arranged at the rear of the base.

15. An electromagnetic relay, characterized in that: have: Pedestal; A pedestal, which is separate from the base, is disposed below the base, and includes a third hole extending in the up-down direction and a fourth hole extending in the up-down direction; a first coil terminal extending downward from the base through the third hole and comprising a third bent portion bent along the bottom surface of the base; as well as The second coil terminal extends downward from the base through the fourth hole and includes a fourth bent portion bent along the bottom surface of the base.

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