JP2012014936A - Substrate mounting type electromagnetic relay and electronic component assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent concentration of stress to a terminal by inertia by a measure on structure of an electromagnetic relay itself in a substrate mounting type electromagnetic relay.SOLUTION: An electromagnetic relay 10 includes a body 14, and a terminal 16 which extends from the body 14. The terminal 16 includes: a first part 28 which has a base part 24 projected from one side 14c of the body 14, and an intermediate part 26 which extends in the direction to cross the base part 24; a second part 32 which is extended from the first part 28, and has a connection part 30 which is conducted and connected to a circuit board 12; and a third part 44 which is extended from the first part 28 separately from the second part 32, and has a column part 46 which is brought into contact with the one side 14c of the body 14. The electromagnetic relay 10 prevents concentration of the stress to a bent part 48 between the base part 24 and the intermediate part 26 of the terminal 16 by a prop action performed by the column part 46 of the terminal 16 itself when acceleration such as vibration is generated at a state that the electromagnetic relay 10 is mounted on the circuit board 12.

Description

  The present invention relates to a board mounted electromagnetic relay. The present invention also relates to an electronic component assembly including a board-mounted electromagnetic relay.

  In an electromagnetic relay mounted on a circuit board, an L-shaped bent terminal is extended from the side of the body containing the component that does not face the circuit board surface during mounting, and the tip of the terminal is connected to the conductor of the circuit board There is known an electromagnetic relay having a so-called right angle type terminal (see, for example, Patent Document 1). The surface mount relay described in Patent Document 1 has a configuration in which a plurality of bent terminals are extended from both side surfaces of a box-shaped base, and the terminal region of each terminal is on the surface of the printed circuit board. It is designed to be soldered. Each terminal has a base projecting from the side surface of the base, an intermediate portion that is bent substantially at right angles from the base portion and extends in parallel with the side surface of the base, and a terminal connection portion that is bent at substantially right angles from the intermediate portion. By arranging the connection portion of each terminal so as to overlap the bottom surface of the base facing the printed circuit board at the time of mounting, the occupation area and mounting height of the surface mount relay on the printed circuit board are reduced.

JP-A-6-267386

  An electromagnetic relay having a right angle type terminal tends to concentrate stress due to inertia at a bent portion of the terminal when acceleration such as vibration is generated in a state where the terminal is mounted on a circuit board. In order to avoid stress concentration on the terminal due to inertia, it is effective to fix the main body of the electromagnetic relay to the circuit board by a fixing means such as an adhesive, but in that case, the number of steps in the mounting process increases. Therefore, it is desired that the stress concentration on the terminal due to inertia can be prevented by a structural measure of the electromagnetic relay itself.

  One embodiment of the present invention is a board-mounted electromagnetic relay including a main body and a terminal extending from the main body. The terminal includes a base portion protruding from a side surface of the main body and an intermediate portion extending in a direction intersecting the base portion. A first portion; a second portion extending from the first portion and having a connection portion to be conductively connected to the circuit board; and extending from the first portion separately from the second portion, to at least one of the main body and the circuit board And a third portion having a post portion to be abutted. An electromagnetic relay is provided.

  In the above-described electromagnetic relay, the main body may have a seal layer disposed on the side surface, and the support portion of the third portion may be fixed to the side surface by the seal layer. The support portion of the third portion can have a portion arranged in parallel to the base portion of the first portion. Moreover, the support | pillar part of a 3rd part can have a part arrange | positioned in parallel with the intermediate part of a 1st part. The connection part of the second part can have a part inserted into the through hole of the circuit board. Moreover, the connection part of a 2nd part can have a part joined to the surface of a circuit board.

  Another aspect of the present invention provides an electronic component assembly in which the above-described electromagnetic relay is mounted on a circuit board. In this electronic component assembly, the column portion of the third portion of the terminal of the electromagnetic relay can be fixed to the surface of the circuit board.

  In the electromagnetic relay according to one aspect of the present invention, since the post portion of the terminal is in contact with at least one of the main body and the circuit board, when acceleration such as vibration occurs in the state of being mounted on the circuit board, Relative displacement that may occur between the main body and the terminal due to inertia can be suppressed by the support action produced by the support column of the terminal itself. Therefore, due to the structural measures of the electromagnetic relay itself, it is possible to prevent stress concentration due to the inertia of the main body on the first portion of the terminal having the base portion and the intermediate portion intersecting each other.

  According to the electronic component assembly according to another aspect of the present invention, it is not necessary to fix the main body of the electromagnetic relay to the circuit board, and stress concentration on the terminals due to the inertia of the main body can be prevented by a normal mounting process. Since the electromagnetic relay can be mounted on the circuit board in the state, an increase in the manufacturing cost of the electronic component assembly can be suppressed.

It is a perspective view which shows the electromagnetic relay by the 1st Embodiment of this invention in the state mounted in the circuit board. It is a figure which shows the terminal of the electromagnetic relay of FIG. 1, (a) An enlarged perspective view, (b) The top view of a semi-finished product. It is a figure which shows the terminal by a modification, (a) An enlarged perspective view, (b) The top view of a semi-finished product. (A) The expansion perspective view which shows the other modification of the terminal of FIG. 2, (b) The expansion perspective view which shows the other modification of the terminal of FIG. It is a perspective view which shows the electromagnetic relay by the 2nd Embodiment of this invention in the state mounted in the circuit board. It is a figure which shows the terminal of the electromagnetic relay of FIG. 5, (a) An enlarged perspective view, (b) The top view of a semi-finished product. It is a figure which shows the terminal by a modification, (a) An enlarged perspective view, (b) The top view of a semi-finished product. (A) The expansion perspective view which shows the other modification of the terminal of FIG. 6, (b) The expansion perspective view which shows the other modification of the terminal of FIG. It is a figure which shows the terminal of the electromagnetic relay by the 3rd Embodiment of this invention, (a) An enlarged perspective view, (b) The top view of a semi-finished product. It is an expansion perspective view which shows the modification of the terminal of FIG.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Corresponding components are denoted by common reference symbols throughout the drawings.

  FIG. 1 is a perspective view showing a board-mounted electromagnetic relay 10 according to a first embodiment of the present invention mounted on a circuit board 12, and FIG. 2 is a diagram showing one terminal of the electromagnetic relay 10. . In addition, the kind, use, etc. of the electromagnetic relay 10 are not limited.

  The electromagnetic relay 10 includes a main body 14 and a plurality of terminals 16 and 18 extending from the main body 14. The main body 14 has a substantially rectangular parallelepiped shape as a whole, and is substantially orthogonal to the bottom surface 14a facing the surface 12a of the circuit board 12, the top surface 14b opposite to the bottom surface 14a, the bottom surface 14a and the top surface 14b when mounted. And four side surfaces 14c. In the illustrated configuration, the main body 14 includes a base 20 that supports various built-in components such as electromagnets and contact components, and a cover 22 that is assembled to the base 20 and that forms a housing that houses the built-in components in cooperation with the base 20. With. The outer surface 20a of the base 20 constitutes one side surface 14c of the main body 14, and the outer surface of the cover 22 constitutes a bottom surface 14a, a top surface 14b, and the other three side surfaces 14c of the main body 14.

  Each of the plurality of terminals 16 and 18 has a right angle shape bent in an L shape as a whole. In the illustrated configuration, for example, the two terminals 16 are integrally or separately connected to a pair of contact parts (not shown) that can be opened and closed, and the other two terminals 18 are electromagnets (not shown). To a pair of coil terminals (not shown). The terminals 16 and 18 are independently and fixedly attached to a plurality of slits (not shown) formed at predetermined positions on one side surface 14c of the main body 14 (the outer surface 20a of the base 20).

  Each terminal 16 connected to a contact part (not shown) has a base portion 24 protruding from one side surface 14c (base outer surface 20a) of the main body 14 and a first portion 28 having an intermediate portion 26 extending in a direction intersecting the base portion 24. And a second portion 32 having a connection portion 30 that extends from the first portion 28 and is conductively connected to the circuit board 12. In the illustrated configuration, the first portion 28 of the terminal 16 has a base portion 24 protruding from the one side surface 14 c (base outer surface 20 a) of the main body 14 substantially vertically and extending in a straight line. Accordingly, the intermediate portion 26 has a shape that extends in a straight line in a direction substantially orthogonal to the base portion 24 and substantially parallel to the one side surface 14c (base outer surface 20a) of the main body 14. The second portion 32 of the terminal 16 has a shape in which the connecting portion 30 extends linearly from the intermediate portion 26 of the first portion 28 without passing through the bent portion and protrudes to a position beyond the bottom surface 14a of the main body 14. .

  Each terminal 18 connected to a coil terminal (not shown) has a base portion 34 protruding from one side surface 14c (base outer surface 20a) of the main body 14 and a first portion 38 having an intermediate portion 36 extending in a direction intersecting the base portion 34. And a second portion 42 having a connection portion 40 that extends from the first portion 38 and is conductively connected to the circuit board 12. In the illustrated configuration, the first portion 38 of the terminal 18 has a base portion 34 protruding substantially vertically from the one side surface 14c (base outer surface 20a) of the main body 14 and extending in a straight line. Accordingly, the intermediate portion 36 has a shape extending linearly in a direction substantially orthogonal to the base portion 34 and substantially parallel to the one side surface 14c (base outer surface 20a) of the main body 14. The second portion 42 of the terminal 18 has a shape in which the connecting portion 40 extends linearly from the intermediate portion 36 of the first portion 38 without going through the bent portion and protrudes to a position beyond the bottom surface 14 a of the main body 14. .

  The terminal 16 connected to the contact part (not shown) is a third portion 44 that extends from the first portion 28 separately from the second portion 32, and is a column portion 46 that contacts the main body 14. A third portion 44 having In the illustrated configuration, the third portion 44 extends in a lateral direction substantially orthogonal to the first portion 28 from the intermediate portion 26 of the first portion 28, and the column portion 46 is substantially connected to the base portion 24 via a substantially right-angled bent portion. It has a shape that is parallel and extends linearly in a direction substantially perpendicular to one side surface 14c (base outer surface 20a) of the main body 14. The column portion 46 of the third portion 44 is brought into contact with the one side surface 14c (base outer surface 20a) of the main body 14 at the tip 46a (FIG. 2A).

  The terminal 16 is manufactured by bending a semi-processed product (FIG. 2B) punched out into a predetermined shape from an electrically conductive sheet metal material by bending portions 48 and 50 at a substantially right angle. In the illustrated configuration, the fold of the bent portion 48 between the base portion 24 and the intermediate portion 26 of the first portion 28 and the bent portion 50 between the intermediate portion 26 of the first portion 28 and the column portion 46 of the third portion 44 are illustrated. The folds extend in directions substantially orthogonal to each other. Thereby, in the terminal 16 as a finished product incorporated in the electromagnetic relay 10, the base 24 and the support 46 have a positional relationship in which the thicknesses (and widths) thereof are arranged in directions substantially perpendicular to each other. Become. Specifically, the base 24 is arranged with its thickness direction facing the height direction of the main body 14, and the support column 46 is arranged with its width direction facing the height direction of the main body 14. Such bending of the terminal 16 can be performed after the terminal 16 as a semi-processed product connected to a contact part (not shown) is attached to the slit (not shown) of the base 20.

  The electromagnetic relay 10 is mounted on the circuit board 12 in a posture in which the bottom surface 14a of the main body 14 faces the surface 12a of the circuit board 12 (preferably a posture in surface contact with each other) (FIG. 1). In the mounted state, the plurality of terminals 16 and 18 of the electromagnetic relay 10 are individually inserted into the plurality of through holes 52 formed in the circuit board 12 with the connection portions 30 and 40 of the second portions 32 and 42, for example, It is fixedly connected to the conductor 54 of the corresponding through hole 52 by solder so as to be conductive (FIG. 2A). Thereby, the electronic component assembly 100 according to an embodiment of the present invention is formed.

  In the electromagnetic relay 10 having the above-described configuration, since the column portion 46 of each terminal 16 is in contact with one side surface 14c (base outer surface 20a) of the main body 14 at the tip 46a, vibration or the like is mounted on the circuit board 12. The relative displacement that may occur between the main body 14 and the terminal 16 due to the inertia of the main body 14 when the acceleration is generated can be suppressed by the support action provided by the column portion 46 of the terminal 16 itself. As a result, stress concentration on the bent portion 48 between the base portion 24 and the intermediate portion 26 of the terminal 16 is prevented. According to this configuration, there is no need to fix the main body 14 of the electromagnetic relay 10 to the circuit board 12, and the electromagnetic relay can be prevented in a state where stress concentration on the terminal 16 due to the inertia of the main body 14 can be prevented by a normal mounting process. Since 10 can be mounted on the circuit board 12, an increase in the manufacturing cost of the electronic component assembly 100 can be suppressed.

  More specifically, in the terminal 16, the main body 14 is in a direction parallel to the surface 12 a of the circuit board 12 with respect to the terminal 16 due to the positional relationship between the base 24 and the column 46, and is viewed from above the main body 14. The torsional stress that can occur in the intermediate portion 26 and the bent portion 48 when displaced in the rotating direction can be reduced by the support action of the column portion 46. Further, since the column portion 46 is disposed with the width direction thereof oriented in the height direction of the main body 14, the tip 46a of the column portion 46 is brought into close contact with one side surface 14c (base outer surface 20a) of the main body 14. The bending stress that can occur in the base 24, the intermediate portion 26, and the bent portion 48 when the main body 14 is displaced so as to jump on the circuit board 12 with respect to the terminal 16 can be reduced.

  A terminal 56 shown as a modified example in FIG. 3 includes a pair of third portions 44 that extend separately from the first portion 28 and the second portion 32. Each of these third portions 44 has a column portion 46 extending substantially parallel to each other. Each third portion 44 extends in a lateral direction substantially orthogonal to the first portion 28 from the intermediate portion 26 of the first portion 28, and the column portion 46 is substantially parallel to the base portion 24 via a substantially right-angled bent portion 50. And it extends linearly in a direction substantially orthogonal to one side surface 14c (base outer surface 20a) of the main body 14, and comes into contact with one side surface 14c (base outer surface 20a) of the main body 14 at the tip 46a (FIG. 3A). .

  The terminal 56 according to the modified example is manufactured by bending a semi-processed product (FIG. 3B) punched out into a predetermined shape from an electrically conductive sheet metal material by bending portions 48 and 50 at a substantially right angle. In the illustrated semi-processed product, the pair of third portions 44 have a line-symmetric shape with the first portion 28 as the center. Other configurations are the same as those of the terminal 16 shown in FIG.

  Similar to the terminal 16, the terminal 56 has a direction in which the main body 14 is parallel to the surface 12 a of the circuit board 12 with respect to the terminal 56 from above the main body 14 due to the positional relationship between the base portion 24 and the pair of column portions 46. The torsional stress that can occur in the intermediate portion 26 and the bent portion 48 when displacing in the clockwise direction and the counterclockwise direction as viewed can be reduced by the supporting action of the pair of column portions 46. In addition, when the tips 46a of both support portions 46 are in close contact with one side surface 14c (base outer surface 20a) of the main body 14, the main body 14 is displaced so as to jump on the circuit board 12 with respect to the terminal 56. The bending stress that can occur in the base 24, the intermediate portion 26, and the bent portion 48 can be reduced.

  In the above configuration, the tip 46a of the column 46 of the terminals 16 and 56 can be fixed to one side surface 14c (base outer surface 20a) of the main body 14. According to this configuration, the stress concentration on the terminals 16 and 56 due to the displacement of the main body 14 in various directions with respect to the terminals 16 and 56 (including not only rotation but also translation) can be reduced. This can be more effectively prevented by the support action. As means for fixing the tip 46a of the column portion 46 of the terminals 16 and 56 to the one side surface 14c (base outer surface 20a) of the main body 14, adhesion or mechanical locking can be adopted, but one side surface 14c of the main body 14 (base outer surface) When the sealing layer 58 disposed in 20a) is used as a fixing means, there is an advantage that the number of steps in the relay manufacturing process is not increased.

  More specifically, in the electromagnetic relay 10 having the terminal 16 or the terminal 56, the base 20 and the cover 22 constituting the main body 14 are combined with each other, and then a seal layer 58 is provided on one side surface 14c (base outer surface 20a) of the main body 14. Thus, the gap between the base 20 and the cover 22 and the gap between the terminals 16 and 18 and the slit (not shown) of the base 20 are sealed. Therefore, in the manufacturing process of the electromagnetic relay 10, the base 20 and the cover 22 are combined with each other, the semi-finished product of the terminal 16 or 56 is bent at a substantially right angle by the bent portions 48 and 50, and the tip 46 a of the column 46 is connected to the body 14. In a state of being in contact with one side surface 14c (base outer surface 20a), a sealing agent is applied to the one side surface 14c (base outer surface 20a) of the main body 14 and solidified to form a seal layer 58. Thereby, the support | pillar part 46 of each terminal 16 is fixed to the one side surface 14c (base outer surface 20a) of the main body 14 by the seal layer 58.

  The terminals 16 and 56 described above have portions where the connection portions 30 of the second portion 32 are inserted into the through holes 52 of the circuit board 12. On the other hand, in the terminals 16 'and 56' shown as other modifications in FIGS. 4A and 4B, the connecting portion 30 'of the second portion 32' is joined to the surface 12a of the circuit board 12. It has a portion. Specifically, the terminals 16 ', 56' are extended from the first portion 28 and the first portion 28 and the third portion 44 corresponding to the first portion 28 and the third portion 44 of the terminals 16, 56, respectively. And a second portion 32 ′ having a connection portion 30 ′ that is conductively connected to the substrate 12. The second portion 32 ′ of the terminals 16 ′ and 56 ′ has a connecting portion 30 ′ through the bent portion 59 that is substantially perpendicular to the intermediate portion 26 of the first portion 28, and one side surface 14 c (base outer surface 20 a) of the main body 14. It has a shape extending linearly in a direction away from the.

  In the state where the electromagnetic relay 10 having the terminal 16 ′ or 56 ′ is mounted on the circuit board 12, the connection portion 30 ′ of the second portion 32 ′ of the terminal 16 ′ or 56 ′ is a pad formed on the surface 12 a of the circuit board 12. The conductor 54 is fixed and connected so as to be conductive, for example, by solder. The electromagnetic relay 10 having this type of terminal 16 'or 56' is called, for example, a surface mount type relay, and has been described above by the action of the column portion 46 of the third portion 44 provided on the terminal 16 'or 56'. An effect equivalent to that of the electromagnetic relay 10 having the terminal 16 or 56 is obtained.

  The electromagnetic relay 10 can be modified in various ways other than the above. For example, instead of the above-described configuration in which the first portion 28, the second portion 32, and the third portion 44 are integrally formed with each other, one or both of the second portion 32 and the third portion 44 with respect to the first portion 28. Can be made from a separate member and connected to the first portion 28 by welding or the like in a later step. According to this configuration, it is possible to form the third portion having the support column not only in the terminals 16 and 56 manufactured by pressing from a sheet metal material but also in a pin-shaped terminal. In addition, a third portion having a support portion can be formed on the terminal 18 connected to a coil terminal (not shown) as in the case of the terminals 16 and 56. Furthermore, the shape, size, arrangement, and the like of the first portion 28, the second portion 32, and the third portion 44 of the terminals 16 and 56 are not limited to the illustrated configuration, and can be variously changed.

  The illustrated electromagnetic relay 10 has a low-profile thin structure with a reduced height when mounted. For example, the electromagnetic relay 10 having a high-profile thin self-standing structure has a plurality of terminals. Can be produced by appropriately bending in a subsequent step. However, the dimensions and shape of the electromagnetic relay 10 are not limited to the illustrated configuration, and can be variously changed.

  FIG. 5 is a perspective view showing a state in which the board mounted electromagnetic relay 60 according to the second embodiment of the present invention is mounted on the circuit board 12, and FIG. 2 is a diagram showing one terminal 62 of the electromagnetic relay 60. is there. The electromagnetic relay 60 has the same configuration as that of the electromagnetic relay 10 described above except for the configuration of the terminal 62 connected to a contact part (not shown). Accordingly, corresponding constituent elements are denoted by common reference numerals and description thereof is omitted.

  The electromagnetic relay 60 includes a main body 14 and a plurality of terminals 62 and 18 extending from the main body 14. Each of the plurality of terminals 62 and 18 has a right angle shape bent in an L shape as a whole. In the illustrated configuration, for example, the two terminals 62 are integrally or separately coupled to a pair of contact parts (not shown) that can be opened and closed, and the other two terminals 18 are electromagnets (not shown). To a pair of coil terminals (not shown). The terminals 62 and 18 are independently and fixedly attached to a plurality of slits (not shown) formed at predetermined positions on one side surface 14c of the main body 14 (the outer surface 20a of the base 20).

  Each terminal 62 connected to a contact part (not shown) has a base portion 64 protruding from one side surface 14c (base outer surface 20a) of the main body 14 and a first portion 68 having an intermediate portion 66 extending in a direction crossing the base portion 64. And a second portion 72 having a connection portion 70 extending from the first portion 68 and electrically connected to the circuit board 12. In the illustrated configuration, the first portion 68 of the terminal 62 has a base portion 64 protruding substantially vertically from the one side surface 14c (base outer surface 20a) of the main body 14 and extending in a straight line. Accordingly, the intermediate portion 66 has a shape extending in a straight line in a direction substantially orthogonal to the base portion 64 and substantially parallel to the one side surface 14c (base outer surface 20a) of the main body 14. The second portion 72 of the terminal 62 has a shape in which the connecting portion 70 extends linearly from the intermediate portion 66 of the first portion 68 without passing through the bent portion and protrudes to a position beyond the bottom surface 14a of the main body 14. .

  The terminal 62 further includes a third portion 74 that extends from the first portion 68 separately from the second portion 72, and has a column portion 76 that contacts the circuit board 12. . In the illustrated configuration, the third portion 74 extends from the base portion 64 of the first portion 68 in the lateral direction substantially orthogonal to the first portion 68, and the support column portion 76 is substantially connected to the intermediate portion 66 via a substantially right-angled bent portion. It has a shape that is parallel and linearly extends in a direction substantially orthogonal to the surface 12 a of the circuit board 12. The column portion 76 of the third portion 74 is brought into contact with the surface 12a of the circuit board 12 at the tip 76a (FIG. 6A).

  The terminal 62 is produced by bending a semi-processed product (FIG. 6B) punched out from a sheet metal material having electrical conductivity into a predetermined shape by bending portions 78 and 80 at a substantially right angle. In the illustrated configuration, the fold of the bent portion 78 between the base portion 64 and the intermediate portion 66 of the first portion 68 and the bent portion 80 between the base portion 64 of the first portion 68 and the column portion 76 of the third portion 74 are illustrated. The fold line extends in a direction substantially orthogonal to each other. Thereby, in the terminal 62 as a completed product incorporated in the electromagnetic relay 60, the intermediate part 66 and the support | pillar part 76 have the positional relationship by which each thickness (and width) is arrange | positioned in the direction substantially orthogonal to each other. become. Specifically, the intermediate portion 66 is disposed so that the thickness direction thereof is substantially perpendicular to the one side surface 14c (base outer surface 20a) of the main body 14, and the column portion 76 has the width direction of the one side surface 14c ( It is arranged in a direction substantially perpendicular to the base outer surface 20a). Such bending of the terminal 62 can be performed after the terminal 62 as a semi-finished product connected to a contact part (not shown) is attached to the slit (not shown) of the base 20.

  The electromagnetic relay 60 is mounted on the circuit board 12 in a posture in which the bottom surface 14a of the main body 14 is opposed to the surface 12a of the circuit board 12 (preferably a posture in surface contact with each other) (FIG. 5). In the mounted state, the plurality of terminals 62 and 18 of the electromagnetic relay 60 are individually inserted into the plurality of through holes 52 formed in the circuit board 12 with the connection portions 70 and 40 of the second portions 72 and 42, for example, It is fixedly connected to the conductor 54 of the corresponding through hole 52 by solder so as to be conductive (FIG. 6A). As a result, an electronic component assembly 102 according to another embodiment of the present invention is formed.

  The electromagnetic relay 60 having the above configuration generates acceleration such as vibration when mounted on the circuit board 12 because the support 76 of each terminal 62 is in contact with the surface 12a of the circuit board 12 at the tip 76a. Sometimes, the relative displacement that may occur between the main body 14 and the terminal 62 due to the inertia of the main body 14 can be suppressed by the support action exerted by the column portion 76 of the terminal 62 itself. As a result, stress concentration on the bent portion 78 between the base portion 64 and the intermediate portion 66 of the terminal 62 is prevented. According to this configuration, there is no need to fix the main body 14 of the electromagnetic relay 60 to the circuit board 12, and the electromagnetic relay can be prevented in a state where stress concentration on the terminal 62 due to the inertia of the main body 14 can be prevented by a normal mounting process. Since 60 can be mounted on the circuit board 12, an increase in manufacturing cost of the electronic component assembly 102 can be suppressed.

  More specifically, the terminal 62 is in a direction in which the main body 14 intersects the surface 12a of the circuit board 12 with respect to the terminal 62 and on one side surface 14c of the main body 14 depending on the positional relationship between the intermediate portion 66 and the column portion 76. Torsional stress that may occur in the base 64 and the bent portion 78 when displacing in the clockwise direction when viewed toward the (base outer surface 20a) can be reduced by the support action of the support column 76. Further, since the column portion 76 is arranged with its width direction oriented in a direction substantially orthogonal to the one side surface 14c (base outer surface 20a) of the main body 14, the tip 76a of the column portion 76 is in close contact with the surface 12a of the circuit board 12. By doing so, it is possible to reduce bending stress that may occur in the base portion 64, the intermediate portion 66, and the bent portion 78 when the main body 14 is displaced so as to jump on the circuit board 12 with respect to the terminal 62.

  A terminal 82 shown as a modified example in FIG. 7 includes a pair of third portions 74 that extend separately from the first portion 68 and the second portion 72. Each of the third portions 74 has a column portion 76 extending substantially parallel to each other. Each third portion 74 extends in a lateral direction substantially orthogonal to the first portion 68 from the base portion 64 of the first portion 68, and the column portion 76 is substantially parallel to the intermediate portion 66 via a substantially right-angled bent portion 80. And it extends linearly in a direction substantially orthogonal to the surface 12a of the circuit board 12, and abuts against the surface 12a of the circuit board 12 at the tip 76a (FIG. 7A).

  The terminal 82 according to the modified example is manufactured by bending a semi-processed product (FIG. 7B) punched out into a predetermined shape from a highly conductive sheet metal material at bent portions 78 and 80 at a substantially right angle. In the illustrated semi-processed product, the pair of third portions 74 has a line-symmetric shape with the first portion 68 as the center. Other configurations are the same as those of the terminal 62 shown in FIG.

  Similar to the terminal 62, the terminal 82 is in a direction in which the main body 14 intersects the surface 12 a of the circuit board 12 with respect to the terminal 82, depending on the positional relationship between the intermediate portion 66 and the pair of column portions 76. The torsional stress that may be generated in the base 64 and the bent portion 78 when displaced in the clockwise direction and the counterclockwise direction when viewed toward the one side surface 14c (base outer surface 20a) is a support action of the pair of column portions 76. Can be reduced. In addition, the base portion 64 and the intermediate portion when the main body 14 is displaced so as to jump on the circuit board 12 with respect to the terminal 82 by keeping the tips 76a of the support columns 76 in close contact with the surface 12a of the circuit board 12. The bending stress that can occur in the bent portion 66 and the bent portion 78 can be reduced.

  In the above configuration, the tip 76a of the support column 76 of the terminals 62 and 82 can be fixed to the surface 12a of the circuit board 12. According to this configuration, the stress concentration on the terminals 62 and 82 caused by the displacement of the main body 14 with respect to the terminals 62 and 82 in various directions (including not only rotation but also translation) is reduced. This can be more effectively prevented by the support action. As a means for fixing the tip 76a of the column portion 76 of the terminals 62, 82 to the surface 12a of the circuit board 12, adhesion or mechanical locking can be adopted, but the terminals 62, 82 are connected to the conductor 54 on the surface 12a of the circuit board 12. When a solder (not shown) for electrically connecting the connecting portions 70 is used as the fixing means, there is an advantage that the number of steps in the relay mounting process is not increased.

  The terminals 62 and 82 described above have portions where the connection portions 70 of the second portion 72 are inserted into the through holes 52 of the circuit board 12. On the other hand, terminals 62 'and 82' shown as other modified examples in FIGS. 8 (a) and 8 (b) are connected to the surface 12a of the circuit board 12 at the connection portion 70 'of the second portion 72'. It has a portion. Specifically, the terminals 62 ', 82' are extended from the first portion 68 and the first portion 68 and the third portion 74 corresponding to the first portion 68 and the third portion 74 of the terminals 62, 82, respectively. And a second portion 72 ′ having a connection portion 70 ′ that is conductively connected to the substrate 12. The second portion 72 ′ of the terminals 62 ′ and 82 ′ has a connecting portion 70 ′ on one side surface 14 c (base outer surface 20 a) of the main body 14 via a bent portion 84 that is substantially perpendicular to the intermediate portion 66 of the first portion 68. It has a shape extending linearly in a direction away from the.

  In a state where the electromagnetic relay 60 having the terminal 62 ′ or 82 ′ is mounted on the circuit board 12, the connection portion 70 ′ of the second portion 72 ′ of the terminal 62 ′ or 82 ′ is a pad formed on the surface 12 a of the circuit board 12. The conductor 54 is fixed and connected so as to be conductive, for example, by solder. An electromagnetic relay 60 having this type of terminal 62 'or 82' is called, for example, a surface-mounted relay, and has been described above by the action of the column portion 76 of the third portion 74 provided on the terminal 62 'or 82'. An effect equivalent to that of the electromagnetic relay 60 having the terminal 62 or 82 is obtained. Note that the electromagnetic relay 60 can be subjected to various modifications similar to those of the electromagnetic relay 10.

  FIG. 9 shows one terminal 86 of the board mounted electromagnetic relay according to the third embodiment of the present invention. The electromagnetic relay according to the third embodiment (only one side surface 14c (base outer surface 20a) of the main body 14 is shown) has the same configuration as the electromagnetic relay 10 described above except for the configuration of the terminal 86. Accordingly, corresponding constituent elements are denoted by common reference numerals and description thereof is omitted.

  The terminal 86 has the characteristics of both the terminal 56 and the terminal 82 described above, and corresponding constituent elements are denoted by common reference numerals and description thereof is omitted. Specifically, the terminal 86 extends from the first portion 28, the first portion 28 having a base portion 24 protruding from one side surface 14 c (base outer surface 20 a) of the main body 14 and an intermediate portion 26 extending in a direction intersecting the base portion 24. A second portion 32 having a connection portion 30 electrically connected to the circuit board 12 and a pair of third portions 88 extending separately from the first portion 28 and the second portion 32, each of which is a main body 14 and a pair of third portions 88 each having a second column portion 76 that contacts the circuit board 12.

  In the illustrated configuration, the first portion 28 of the terminal 86 has a base portion 24 that protrudes substantially vertically from the one side surface 14 c (base outer surface 20 a) of the main body 14 and extends in a straight line. The intermediate portion 26 has a shape extending linearly in a direction substantially orthogonal to the base portion 24 and substantially parallel to the one side surface 14c (base outer surface 20a) of the main body 14. In addition, the second portion 32 of the terminal 86 extends from the intermediate portion 26 of the first portion 28 to the position where the connecting portion 30 extends linearly without going through the bent portion and exceeds the bottom surface 14a (FIG. 1) of the main body 14. It has a protruding shape. Each of the pair of third portions 88 of the terminal 86 extends from the intermediate portion 26 of the first portion 28 in a lateral direction substantially orthogonal to the first portion 28, and is connected to the first portion 28 via the bent portion 50 at a substantially right angle. The support column portion 46 extends linearly in a direction substantially parallel to the base portion 24 and substantially orthogonal to the one side surface 14c (base outer surface 20a) of the main body 14, and the second support column portion 76 of the first support column portion 46 It has a shape branched in the middle and extending linearly in a direction substantially parallel to the intermediate portion 26 and substantially perpendicular to the surface 12 a of the circuit board 12. The first support column 46 is brought into contact with one side surface 14c (base outer surface 20a) of the main body 14 at its tip 46a, and the second support column 76 is brought into contact with the surface 12a of the circuit board 12 at its tip 76a. (FIG. 9A).

  The terminal 86 is produced by bending a semi-processed product (FIG. 9B) punched out of a sheet material having electrical conductivity into a predetermined shape at a bent portion 48 or 50 at a substantially right angle. In the illustrated semi-processed product, the pair of third portions 88 have a line-symmetric shape about the first portion 28. The other configuration is substantially the same as the terminal 16 shown in FIG. 2 and the terminal 62 shown in FIG. The electromagnetic relay provided with the terminal 86 has the characteristics of both the terminal 56 and the terminal 82 described above, so that the number of the column portions 46 and 76 is increased. Therefore, the electromagnetic relay is equivalent to the electromagnetic relays 10 and 60 described above. In addition to the effects, the durability of the terminal 86 can be improved.

  Further, the tip 46a of the first support column 46 and the tip 76a of the second support column 76 of each third portion 88 of the terminal 86 are respectively connected to the one side surface 14c of the main body 14 by the same method as the terminals 56 and 82. It can also be fixed to the (base outer surface 20a) and the surface 12a of the circuit board 12. According to this configuration, the stress concentration on the terminal 86 caused by displacement of the main body 14 in various directions with respect to the terminal 86 (including not only rotation but also parallel movement) can be used to assist the supporting portions 46 and 76. Can be more effectively prevented.

  The terminal 86 has a portion where the connection portion 30 of the second portion 32 is inserted into the through hole 52 of the circuit board 12. On the other hand, the terminal 86 ′ shown as a modified example in FIG. 10 is configured so that the connection portion 30 ′ of the second portion 32 ′ has a portion joined to the surface 12 a of the circuit board 12. More specifically, the terminal 86 ′ is extended from the first portion 28 and the pair of third portions 88 corresponding to the first portion 28 and the pair of third portions 88 of the terminal 86, and the circuit board 12. And a second portion 32 'having a connection portion 30' that is conductively connected to the second portion 32 '. The second portion 32 ′ of the terminal 86 ′ is a direction in which the connecting portion 30 ′ is separated from the one side surface 14 c (base outer surface 20 a) of the main body 14 via the bent portion 59 that is substantially perpendicular to the intermediate portion 26 of the first portion 28. It has a shape extending straight.

  The surface mount type electromagnetic relay having the terminal 86 ′ has the same effect as the electromagnetic relays 10 and 60 described above by the action of the column portions 46 and 76 of the pair of third portions 88 provided on the terminal 88 ′. . In addition, this electromagnetic relay can also perform various deformation | transformation similar to the electromagnetic relays 10 and 60. FIG.

10, 60 Electromagnetic relay 12 Circuit board 14 Main body 16, 16 ', 18, 56, 56', 62, 62 ', 82, 82', 86, 86 'Terminal 24, 34, 64 Base 26, 36, 66 Intermediate part 28, 38, 68 First portion 30, 30 ', 40, 70 Connection portion 32, 32', 42, 72 Second portion 44, 74, 88 Third portion 46 (first) support portion 52 Through hole 54 Conductor 58 Seal layer 76 (Second) support column 100, 102 Electronic component assembly

Claims (8)

In a board mounted electromagnetic relay comprising a main body and a terminal extending from the main body,
The terminal is
A first portion having a base protruding from a side surface of the main body and an intermediate portion extending in a direction crossing the base;
A second portion having a connection portion extending from the first portion and conductively connected to the circuit board;
Extending from the first part separately from the second part, and comprising a third part having a column part that contacts at least one of the main body and the circuit board;
An electromagnetic relay characterized by   The electromagnetic relay according to claim 1, wherein the main body has a seal layer disposed on the side surface, and the support portion of the third portion is fixed to the side surface by the seal layer.   The electromagnetic relay according to claim 2, wherein the support portion of the third portion has a portion disposed in parallel with the base portion of the first portion.   The electromagnetic relay according to any one of claims 1 to 3, wherein the support portion of the third portion includes a portion disposed in parallel with the intermediate portion of the first portion.   The electromagnetic relay according to any one of claims 1 to 4, wherein the connection portion of the second portion has a portion inserted into a through hole of a circuit board.   5. The electromagnetic relay according to claim 1, wherein the connection portion of the second portion has a portion joined to a surface of a circuit board.   The electronic component assembly formed by mounting the electromagnetic relay of any one of Claims 1-6 on a circuit board.   The electronic component assembly according to claim 7, wherein the support portion of the third portion of the terminal of the electromagnetic relay is fixed to a surface of the circuit board.

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