JP2009170310A - Holding member, electronic component, and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a holding member for holding an electronic component on a substrate with higher strength while reducing damage to the wall face of a through-hole, and to provide the electronic component and an electronic device. <P>SOLUTION: The holding member has a leg part to be inserted into the through-hole of the substrate to hold the electronic component on the surface of the substrate. It comprises a base part to be fixed to the electronic component which is integrally formed with the same metal plate, and at least one leg part extending from the base part. The leg part consists of a locking portion provided at the front end thereof and having at least part located on the opening periphery of the through-hole in the reverse of the substrate in the fixing state of the electronic component, a connection portion having one end connected to the locking portion and part arranged in the through-hole in the fixing state, and a spring portion having one end connected to the end of the connection portion on the opposite side to the locking portion, and arranged on the surface of the substrate in the fixing state, the spring portion being displaced during inserting the locking portion and the connection portion into the through-hole so that the connection portion is inclined in the fixing state and the locking portion is inserted into the through-hole. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a holding member that holds an electronic component such as a connector on a substrate, an electronic component that includes the holding member, and an electronic device that includes the substrate and the electronic component.

Conventionally, a part of a holding member provided in an electronic component is inserted into a through-hole formed in the substrate while being elastically deformed, and the electronic component is held on the substrate by a reaction force (restoring force) due to the deformation of the holding member. A holding structure is known. For example, in Patent Document 1, a holding member is formed by punching a metal plate, printing pressure, and bending, and the fitting is inserted from a pair of first legs that extend in the same direction from the plate-like base and face each other. The portion is inserted into the through-hole while elastically deforming in the plate thickness direction (a direction substantially perpendicular to the thickness direction of the substrate and inward of the through-hole) with the connection end with the parallel portion in the transition portion as a fulcrum. . Then, due to the reaction force (restoring force) against the deformation, the fitting portion contacts (interferences) with the wall surface (inner surface) of the through hole, and thereby the electronic component from the board in the direction to pull out the fitting portion from the through hole. The disconnection is suppressed and the electronic component is held on the substrate. With such a holding structure, the area occupied by the electronic component relative to the board (physical size of the electronic component) can be reduced as compared with screw fastening or the like. Also, the assembly man-hour can be reduced.
JP 2007-128772 A

  However, the holding member shown in Patent Document 1 has a structure in which the insertion portion contacts (locks) with the wall surface of the through hole by a reaction force against its own elastic deformation, and the electronic component is held on the substrate. There is a problem that the proof strength against the external force (the proof strength against pulling) that attempts to pull out the insertion portion from the through hole is low. That is, there is a problem that the holding strength of the electronic component with respect to the substrate is low and the electronic component is easily detached from the substrate.

  In addition, a plated layer is generally formed on the wall surface of the through hole. However, if an attempt is made to improve the resistance to tension, the reaction force (spring property) against the elastic deformation of the fitting portion becomes stronger, so the plated layer is peeled off. It becomes easy. That is, the wall surface of the through hole is easily damaged.

  In view of the above problems, an object of the present invention is to provide a holding member, an electronic component, and an electronic device that can improve the holding strength of the electronic component with respect to the substrate and can reduce damage to the wall surface of the through hole.

  In order to achieve the above object, the invention described in claim 1 includes a base portion fixed to the electronic component and at least one leg portion extending from the base portion, and the leg portion is a through hole of the substrate. A holding member that is inserted and holds an electronic component on the surface of the board, and the leg portion is formed integrally with the base portion by processing the same metal plate, and is provided on the distal end side of the leg portion. In a fixed state in which the electronic component is fixed to the substrate, a locking portion at least a part of which is located on the periphery of the opening of the through-hole on the back surface of the substrate and one end portion are connected to the locking portion and are fixed One end is connected to the connecting portion partially disposed in the through hole, and the end of the connecting portion opposite to the locking portion, and is disposed on the surface of the substrate in a fixed state, and to the through hole. When inserting the locking part and the connecting part, the connecting part is inclined with respect to the fixed state and the locking part penetrates. Characterized in that it has a spring portion which is displaced so as to be inserted within.

  As described above, according to the present invention, the holding member has the locking portion that passes through the through hole and is positioned on the periphery of the opening on the back surface of the substrate in the fixed state, and the locking portion is penetrated by the displacement of the spring portion. It passes through the hole and is located on the back side of the substrate. And the latching | locking part latches to the back surface of a board | substrate, when the external force which tries to pull out a leg part from a through-hole acts. Therefore, the strength against pulling is improved as compared with the conventional case, and the holding strength of the electronic component against the substrate can be improved. In other words, at least before soldering, it is possible to make it easier for the electronic component to come off the substrate than before.

  Moreover, the spring part is connected with the edge part on the opposite side to the connection end of the latching | locking part in a connection part. That is, the locking portion and the spring portion are configured at different positions in the leg portion, and the spring portion is not inserted into the through hole. That is, the spring part itself does not lock onto the wiring board by a reaction force due to deformation. Therefore, the damage to the through-hole wall surface (plated layer formed on the wall surface) can be reduced compared to the conventional configuration in which the spring portion itself is locked to the wall surface of the through-hole by the reaction force of the spring portion. it can. In addition, the degree of freedom in designing the spring portion can be improved.

  In the invention described in claim 1, as described in claim 2, it is preferable to employ a spring portion whose width in the short direction is wider than the plate thickness of the metal plate.

  According to this, when the strength of the spring portion is increased and the locking portion (and the connecting portion) is inserted into the through hole or when an external force is applied to pull out the leg portion from the through hole, the spring portion is deformed. And damage can be suppressed.

  In the first or second aspect of the invention, as described in the third aspect of the invention, it is preferable that the engaging portion is formed only by punching a metal plate. Although it can be formed by bending, if the locking portion is formed only by punching, the yield strength can be improved against deformation and breakage compared to bending. Thereby, the holding | maintenance strength of the electronic component with respect to a board | substrate can further be improved.

  In any one of Claims 1-3, as described in Claim 4, as a spring part, the base part and the folding | turning part which opposes this base part by the bending process were connected by the bending part. A shaped spring portion may be employed. Moreover, you may employ | adopt a flat spring part (plate spring) as described in Claim 5.

  If it is made substantially U-shaped, the spring length can be increased to increase the amount of displacement (stroke) of the spring portion, and the length of the locking portion can be increased. That is, it is difficult to release the locked state by the locking portion, and it is possible to suppress the dropout of the leg portion from the through hole (the removal of the electronic component from the board). Moreover, when it is flat, it is not necessary to perform bending work like a substantially U shape. Moreover, even if it is flat form, if it is substantially U-shape or meandering shape, the spring length can be lengthened and the displacement amount (stroke) of the spring part can be increased.

  In the invention according to any one of claims 1 to 5, as described in claim 6, the leg portion has a pair of leg portions extending in the same direction from the base portion and facing each other, and the pair of legs. The direction extended from the connection part of the latching | locking part in a part is good to set it as the different direction.

  According to this, the holding strength of the electronic component with respect to the substrate can be improved as compared with the configuration having only one leg portion. In addition, since the locking portions extend in different directions, rattling with respect to the substrate is reduced compared to a configuration in which the locking portions extend in the same direction. Moreover, the locked state is difficult to be released.

  In the invention described in claim 6, as described in claim 7, the state before the insertion is extended at least from the base portion to the pair of connecting portions in the same direction as the leg portions and the tips facing each other. And it is good also as a structure which has the inclination restriction | limiting part provided apart from the connection part.

  According to this, the inclination of a connection part can be restrict | limited by the inclination restriction | limiting part provided between a pair of leg parts. Therefore, for example, when the leg portion is inserted into the through hole, even if the positional relationship between the through hole and the leg portion deviates from a predetermined relationship, the connecting portion stops against the inclination limiting portion, so that the connecting portion is connected more than necessary. The portion does not tilt, and the deformation and breakage of the leg can be suppressed. In addition, when performing flow soldering, the presence of the inclination limiting portion can make it easier to suck up the solder to the surface side of the substrate by capillary action. In this case, since the inclination limiting portion is also in contact with the solder, the strength against tension can be further improved.

  In the invention according to any one of the first to seventh aspects, as described in the eighth aspect, in the direction substantially perpendicular to the thickness direction of the substrate, the locking portion is farthest from the through hole in a fixed state. It is preferable that the corner portion serving as the position has a polygonal shape formed by connecting a plurality of corners larger than 90 ° or a rounded shape.

  In the case where the corner portion has an angular shape (angle of 90 ° or less), at the time of insertion of the leg portion into the through hole, when the locking portion penetrates the through hole, at least a part of the locking portion penetrates and the spring portion Because of this reaction force (restoring force), the corner moves to the outside of the through hole, so that the corner portion may scrape off (bounce off) the plating layer at the wall end (through hole opening). On the other hand, when the corner portion has the above-described shape, plating layer scraping by the corner portion can be suppressed.

  In the invention according to any one of claims 1 to 8, as described in claim 9, a portion of the locking portion facing the substrate back surface is separated from the connecting portion in a direction substantially perpendicular to the thickness direction of the substrate. It is also possible to adopt a configuration in which the taper is far from the substrate surface in the thickness direction of the substrate.

  According to this, in the thickness direction of the substrate, for example, manufacturing variation (holding member, substrate, electronic component) or assembly variation (holding member and main body of electronic component, electronic component (including holding member) within a tolerance range Even if the substrate) occurs, the locking portion can be easily locked to the back surface of the substrate. That is, rattling between the substrate and the electronic component can be suppressed. In addition, the holding member having the same configuration can be applied to substrates (multiple types of substrates) having different thicknesses.

  Next, an invention according to claim 10 is an electronic component comprising a main body portion and a holding member that holds the main body portion on the surface of the substrate in which the through-hole is formed. A base that is fixed to the base and at least one leg that extends from the base and is inserted into the through-hole. The leg is formed integrally with the base by processing the same metal plate. The locking portion is provided on the distal end side of the leg portion and is fixed to the substrate, and at least a part is positioned on the periphery of the through hole opening on the back surface of the substrate, and one end portion is locked. One end is connected to the end of the connecting portion opposite to the locking portion in the fixed state, and arranged on the surface of the substrate in the fixed state. At the time of inserting the locking portion and the connecting portion into the through hole, the connecting portion is inclined with respect to the fixed state. Engaging portion is characterized by having a spring portion which is displaced so as to be inserted into the through hole Te.

  As described above, the electronic component of the present invention includes the above-described holding member. Since the function and effect are the same as those of claim 1, the description thereof is omitted.

  In a tenth aspect of the present invention, as described in the eleventh aspect, a plurality of holding members are provided for one main body portion, and the holding portions have different directions extending from the connecting portion as the locking portions. It is good also as a structure which has at least a pair of latching | locking part made into the opposite direction. According to this, even if one holding member has only one leg, for example, the same effect as the holding member according to claim 6 can be obtained.

  Next, an invention according to claim 12 is an electronic device comprising: a substrate having a through hole formed therein; a main body portion; and an electronic component having a holding member for holding the main body portion on the surface of the substrate. The holding member includes a base portion fixed to the main body portion and at least one leg portion extending from the base portion and inserted into the through hole, and the leg portions process the same metal plate. The base is formed integrally with the base, and is provided on the distal end side of the leg, and in a fixed state where the electronic component is fixed to the substrate, at least a part thereof is located on the periphery of the opening of the through hole on the back surface of the substrate. One end is connected to the stopper, one end connected to the locking part, a connecting part partially disposed in the through hole in a fixed state, and the end of the connecting part opposite to the locking part And placed on the surface of the substrate in a fixed state, and when inserting the locking part and the connecting part into the through hole Oite, connecting portion engaging portion to tilt, characterized in that it has a spring portion which is displaced so as to be inserted into the through hole with respect to the stationary state.

  Thus, the electronic device of the present invention includes the above-described holding member. Since the function and effect are the same as those of claim 1, the description thereof is omitted.

  In the twelfth aspect of the present invention, as in the thirteenth aspect, the leg portion has a pair of leg portions extending in the same direction from the same base portion and facing each other. The direction extended from the connection part of the stop part is good to set it as the structure made into the opposite direction mutually. Since the operational effect of the present invention is the same as that of the sixth aspect, the description thereof is omitted.

  In a thirteenth aspect of the present invention, as described in the fourteenth aspect, the through hole is a long hole extending in one direction, and the locking portion in each leg portion extends from the connecting portion along the longitudinal direction of the through hole. It is preferable that the extending direction is opposite to each other and is located on the periphery of the opening on the long side of the through hole on the back surface of the substrate.

  When the through hole is thus a long hole, the inclination of the connecting portion at the time of insertion can be increased as compared with a circular through hole having the same cross-sectional area. That is, since the reaction force of the spring portion can be reduced, damage to the through-hole wall surface (plated layer formed on the wall surface) can be reduced when the locking portion and the coupling portion are inserted into the through-hole. it can. In addition, when the longitudinal direction of the through hole is substantially parallel to the short direction of the main body portion of the electronic component, the degree of freedom in arranging the wiring pattern on the substrate can be improved.

  In the invention according to claim 13 or claim 14, as in claim 15, in each leg portion, the width between the outer portions facing the wall surface of the through hole in the connecting portion is equal to the outer portion in the through hole. It is good also as a structure made more than the width | variety between the site | parts which oppose. According to this, in a fixed state, at least a part of the connecting portion is in contact with the wall surface of the through hole, so that rattling between the substrate and the electronic component can be suppressed.

  In the invention according to claim 13 or claim 14, as described in claim 16, in each leg portion, the width between the outer portions facing the through hole in the connecting portion is fixed, and the back surface of the substrate. The width at the opening of the through hole may be narrower than the width at the opening of the through hole on the surface of the substrate. According to this, a gap is formed between the wall surface of the through hole in the substrate and the outer portion of the connecting portion facing the substrate. Therefore, when flow soldering is performed from the back surface side of the substrate, the surface side of the substrate is caused by capillary action in the gap. The solder can be easily sucked up.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is an exploded view for explaining a schematic configuration of the electronic control device according to the first embodiment. FIG. 2 is a plan view of the periphery of the mounting portion in a state where the connector is mounted on the wiring board. FIG. 3 is a perspective view showing a schematic configuration of the holding member. FIG. 4 is a development view of a leg portion of the holding member shown in FIG. 3. FIG. 5 is a partial cross-sectional view showing when the leg portion is inserted into the through hole. 6A and 6B are diagrams showing a state where the connector is held on the substrate surface, where FIG. 6A is a partial cross-sectional view, and FIG. 6B is a plan view viewed from the back side of the substrate. FIG. 7 is a partial cross-sectional view showing the state after flow soldering. In FIGS. 2 and 5 to 7, the plating layer on the wall surface of the through hole is omitted for convenience. Further, in the following, as shown in FIG. 1, the thickness direction of the wiring board is shown as the vertical direction, and as shown in FIG. 2, the terminal arrangement direction in the housing is orthogonal to the horizontal direction, the vertical direction, and the horizontal direction. The direction is indicated as the front-rear direction. Moreover, the cross-sectional views of FIGS.

  In the embodiment described below, the holding member is mainly characterized, but the holding member will be described together with the connector and the electronic device having the holding member. The electronic device shown in the present embodiment is a non-waterproof electronic control device, and is used, for example, as an engine ECU (Electric Control Unit) of a vehicle.

  The electronic control device 1 shown in FIG. 1 includes a circuit board 30 in which an electronic component 32 is mounted on a wiring board 31 and a connector 50 having a terminal 51, a housing 52, and a holding member 60. . In addition to the above elements, the present embodiment includes a housing 10 that houses the circuit board 30 and the connector 50.

  The housing 10 is made of a metal material such as aluminum or iron, or a resin material, and accommodates the circuit board 30 and a part of the connector 50 therein. The number of constituent members of the housing 10 is not particularly limited, and may be configured from one member or a plurality of members. In the present embodiment, as shown in FIG. 1, it is constituted by two members, a box-shaped case 11 with one side opened and a shallow cover 12 with a substantially rectangular plate shape that closes the open surface of the case 11. Has been. The case 11 and the cover 12 are assembled to form the housing 10 having an internal space for accommodating the circuit board 30 and the connector 50. The housing 10 (case 11) is provided with a connector notch (not shown) corresponding to the connector 50, and the case 11 and the cover 12 are assembled so as to accommodate the circuit board 30 (for example, In a state where the screw is fastened), a part of the circuit board 30 and the connector 50 (including the connection side of the terminal 51 to the circuit board 30) is accommodated in the housing 10, and the remaining part of the connector 50 (external to the terminal 51) (Including the connection side with the connector) is exposed outside the housing 10.

  As shown in FIG. 1, the circuit board 30 includes a wiring board 31 as a board on which wiring including lands as electrodes and via holes for connecting the wirings are formed, to a microcomputer, a power transistor, a resistor, a capacitor, and the like. The electronic component 32 is mounted. In the present embodiment, a connector 50 that electrically connects the circuit board 30 and the outside is mounted on the wiring board 31 as one of the electronic components 32. The connector 50 corresponds to the electronic component described in the claims. Further, the wiring board 31 includes a through hole 33 into which the mounting portion of the terminal 51 is inserted as shown in FIG. 2 and a leg portion 62 of the holding member 60 as shown in FIGS. A through hole 34 to be inserted is formed. Specifically, as shown in FIG. 2, one through hole 34 is formed outside each end of the housing 52 in the left-right direction, and a plurality of through holes 33 are formed between the through holes 34. Yes. A plating layer (not shown) is formed around the wall surfaces of the through holes 33 and 34 and the opening of the wiring substrate 31, and the plating layer formed on the wall surface of the through hole 33 is used for the wiring formed on the wiring substrate 31. It is designed to function as a land. In addition, the cross-sectional shape of each through-hole 33 and 34 is not specifically limited. In the present embodiment, the through-hole 33 has a substantially circular cross-section, and the through-hole 34 has a long hole with a substantially elliptical cross section that is long in the front-rear direction with respect to the left-right direction (see FIG. 6B).

  The connector 50 is formed by arranging a plurality of terminals 51 made of a conductive material along a surface 31a of the wiring board 31 with respect to a housing 52 made of an electrically insulating material (resin in this embodiment). . The terminal 51 is electrically connected via solder (not shown) in a state where one end portion (mounting portion) extending from the front surface 52a of the housing 52 is inserted into the corresponding through hole 33. Yes. The other end portion extended from the rear surface of the housing 52 is exposed outside the housing 10 and is electrically connected to an external connector. In the present embodiment, as shown in FIG. 2, the terminal 51 includes a signal terminal 51a for signal transmission and a power terminal 51b for power transmission that is thicker than the signal terminal 51a. And these terminals 51 are each held | maintained so that it may not mutually interfere with respect to the substantially rectangular housing 52 in which the planar shape along the surface 31a of the wiring board 31 is long in one direction (left-right direction), They are arranged in the left-right direction (the longitudinal direction of the housing 52).

  Further, on both side surfaces 52b of the housing 52 in the left-right direction, pedestal portions 53 are extended from the side surface 52b to the outside in the left-right direction at two front and rear positions corresponding to the four corners of the housing 52. As shown in FIG. 2, the pedestal portion 53 has a longitudinal slit-shaped groove portion 54 formed by cutting the upper surface of each pedestal portion 53 and a surface facing the other pedestal portion 53 facing each other in the front-rear direction. And the holding member 60 is inserted from the upper part with respect to the groove part 54 of the left-right both ends side in the housing 52. As shown in FIG.

  The holding member 60 is inserted into the through hole 34 of the wiring board 31 to make it difficult for the connector 50 to be detached from the wiring board 31 at least before being soldered. That is, the connector 50 is held on the surface 31 a of the wiring board 31. As shown in FIG. 3, the holding member 60 has a base portion 61 and a leg portion 62 that are integrally formed.

  The base 61 is a part for fixing the holding member 60 to the housing 52. In the present embodiment, the base portion 61 is a substantially rectangular flat plate that is inserted into and fixed to the groove portion 54 provided on the side surface 52 b of the housing 52. A plate-like leg portion 62 extends downward (toward the wiring board 31) from the lower end of the substantially central portion of the base portion 61.

  The leg portion 62 is a part that functions to hold the connector 50 on the surface 31a of the wiring board 31 (to make it difficult to remove the connector 50 from the wiring board 31 at least before soldering), and a part of the leg part 62 is a wiring It is inserted into the through hole 34 of the substrate 31. In the present embodiment, as the leg portion 62, a pair of leg portions 62 a and 62 b are extended from the lower end of the substantially central portion of the base portion 61 in the same direction (downward).

  Of the legs 62a and 62b, one leg 62a is provided on the distal end side (lower distal end side) of the leg portion 62a, and the connector 50 is fixed to the wiring board 31 in a fixed state (holding state). A locking portion 63 a is provided that is at least partially positioned on the periphery of the opening of the through hole 34 on the back surface 31 b of the substrate 31. The locking portion 63a is connected to one end of a connecting portion 64a that is partially disposed in the through hole 34 in a fixed state. In addition, the other end of the connecting portion 64a is disposed on the surface 31a of the wiring board 31 in a fixed state, and the connecting portion 64a is fixed when the engaging portion 63a and the connecting portion 64a are inserted into the through hole 34. A spring portion 65a that is inclined with respect to the state and is displaced so that the locking portion 63a is inserted into the through hole 34 is connected. And the edge part on the opposite side to the connection end with the connection part 64a in the spring part 65a is connected with the base 61 via the connection part 66a. 3 indicates an end face (hereinafter simply referred to as an end face 67) of a flat metal plate used when the holding member 60 is configured.

  Specifically, as shown in FIG. 3, a linear connecting portion 66 a is extended downward from the base 61 on the same plane as the base 61 that is a substantially rectangular flat plate. In addition, if the spring part 65a does not contact the base part 61 even if it displaces, it can also be set as the structure without the connection part 66a. Then, the spring portion 65a is bent substantially 90 degrees from the connecting portion 66a (bent in the left (right) direction with respect to the housing 52 as shown in FIG. 2). It is extended. The spring portion 65a is supported by the base portion 61 via a connecting portion 66a, and a base portion connected to the connecting portion 66a and a folded portion facing the base portion are connected by a bent portion. In a state in which the base plate is not displaced, the base portion and the folded portion are substantially parallel to each other and are also substantially parallel to the surface 31 a of the wiring board 31. In this embodiment, as shown in FIG. 3, the width W of the spring portion 65a (the width in the direction substantially perpendicular to the extending direction of the spring portion 65 and the plate thickness direction) is the plate thickness T (flat plate shape). It is wider than the thickness of the metal plate. The bent portion of the substantially U-shaped spring portion 65a is bent approximately 90 ° (outside in the left (right) direction with respect to the housing 52 as shown in FIG. 2), and the spring portion 65a is not displaced. A connecting portion 64a extending substantially perpendicular to the surface 31a of the wiring board 31 is extended. In the present embodiment, the end surface 67 of the connecting portion 64a is opposed to the wall surface of the through hole 34, and the connecting portion 64a is almost completely inserted when the locking portion 63a and the connecting portion 64a are inserted into the through hole 34. It is rigid so as not to deform. The length extending in the vertical direction is such that the spring portions 65 a and 65 b do not contact the front surface 31 b of the wiring board 31 until at least the locking portions 63 a and 63 b are positioned on the back surface 31 b of the wiring board 31. Yes. And the latching | locking part 63a is extended in the front (rear) direction from the connection part 64a by the same plane as the lower end of the linear connection part 64a. The engaging portion 63a has a surface facing the back surface 31b of the wiring board 31 substantially parallel to the back surface 31b, and the vertical width is separated from the connecting portion 64a in the front-rear direction from the connecting end side with the connecting portion 64a. The closer to the tip of the corner, the narrower the so-called wedge shape. In addition, at least a part of the end surface 67 of the locking portion 63a is positioned (opposed) on the back surface 31b of the wiring board 31 in a fixed state.

  On the other hand, the other leg portion 62b extends in the same direction from the lower end of the substantially central portion of the base portion 61 and has a symmetrical shape with the leg portion 62a. That is, the leg part 62b also has the latching | locking part 63b, the connection part 64b, the spring part 65b, and the connection part 66b similarly to the leg part 62a.

  In the present embodiment, the locking portions 63a and 63b of the pair of leg portions 62a and 62b have opposite directions extending from the corresponding connecting portions 64a and 64b. In the present embodiment, as shown in FIG. 6B, on the back surface 31 b of the wiring substrate 31 on one end side in the longitudinal direction (front-rear direction) of the through-hole 34 with respect to the through-hole 34 having a substantially elliptical cross section elongated in the front-rear direction. The locking portion 63a is located on the back surface 31b of the wiring board 31 on the other end side. Further, in the pair of leg portions 62a and 62b, as shown in FIG. 5, the width H of the connecting portions 64a and 64b is the width (inner diameter) D of the through hole 34 in the front-rear direction where the locking portions 63a and 63b are locked. The length is shorter than the half of the length, and the length is such that the legs 62a and 62b do not come into contact with each other when the legs 62a and 62b are inserted into the through hole 34. Further, as shown in FIG. 6A, the width S between the outer portions of the coupling portions 64 a and 64 b in a state where the spring portions 65 a and 65 b are not displaced is shorter than the width D of the through hole 34. . That is, in a state in which a part of the locking portions 63a and 63b is located on the back surface 31b of the wiring board 31, the connecting portions 64a and 64b do not contact the wall surface of the through hole 34, and the outer portions of the connecting portions 64a and 64b. There is a gap between the opposing wall surfaces.

  Such a holding member 60 can be formed by punching a flat metal plate and partially bending it. Specifically, a flat metal plate is punched into the shape shown in FIG. At this stage, the connecting portions 66a and 66b, the spring portions 65a and 65b, the connecting portions 64a and 64b, and the locking portions 63a and 63b are configured on the same plane as the base portion 61. With respect to the flat holding member 60, the boundary 68 (broken line) between the connecting portions 66a and 66b and the spring portions 65a and 65b is bent by approximately 90 °, and the spring portions 65a and 65b are bent into a substantially U shape. Further, the boundary 69 (broken line) between the spring portions 65a and 65b and the connecting portions 64a and 64b is bent by approximately 90 °. In this way, the holding member 60 shown in FIG. 3 is formed from one metal plate. Accordingly, the locking portions 63a and 63b are formed only by punching without bending.

  Next, a method for holding the connector 50 on the wiring board 31 by the holding member 60 will be described. First, the base 61 of the holding member 60 described above is inserted into the groove 54 of the connector 50 and fixed. Then, as shown in FIG. 5, the holding member 60 is inserted into the through-hole 34 from the locking portions 63 a and 63 b in the direction from the front surface 31 a side to the back surface 31 b side of the wiring substrate 31 (in the direction of the white arrow in the figure). To do. Here, the engaging portions 63 a and 63 b have a length that is longer than the width D of the through-hole 34. However, the locking portions 63a and 63b are wedge-shaped, and the spring portions 65a and 65b can be elastically deformed in the plate thickness direction. Therefore, when the holding member 60 (connector 50) is pushed in the direction of the white arrow shown in FIG. 5 and the locking portions 63a and 63b come into contact with the wiring board 31, the wedge-shaped locking portions 63a and 63b follow the inclination. The spring portions 65a and 65b are displaced (elastically deformed) with the portion supported by the base portion 61 as a fulcrum so as to move to the inside of the through hole 34. Specifically, as shown in FIG. 5, in the substantially U-shaped spring portions 65a and 65b, at least the connection end side of the folded portion with the connection portions 64a and 64b is displaced upward. Due to the displacement of the spring portions 65 a and 65 b, wedge-shaped locking portions 63 a and 63 b are inserted into the through holes 34. Further, the connecting portions 64a and 64b themselves hardly undergo elastic deformation, and are inclined with respect to the fixed state (or the state before insertion). That is, the spring portions 65 a and 65 b are displaced so that the connecting portions 64 a and 64 b are inclined and the locking portions 63 a and 63 b are inserted into the through holes 34. In addition, the dashed-dotted line shown in FIG. 5 has shown the spring part 65a of the state which is not displaced as a comparison.

  When the holding member 60 (connector 50) is further pushed in while the corner portions of the locking portions 63a and 63b are brought into contact with the wall surface of the through hole 34 by the reaction force (restoring force) due to elastic deformation of the spring portions 65a and 65b, The stop parts 63a and 63b pass through the through hole 34. Then, due to the reaction force of the spring portions 65 a and 65 b, as shown in FIGS. 6A and 6B, at least a part of the locking portions 63 a and 63 b is the back surface of the wiring board 31 and the through holes 34. It will be located on the periphery of the opening. Thus, in this embodiment, the connector 50 is held on the wiring board 31.

  Further, in the present embodiment, as a terminal 51, a terminal of an insertion mounting structure that is connected to a land formed around the wall surface of the through hole 33 and the opening by flow soldering while being inserted into the corresponding through hole 33. The holding member 60 is also flow soldered together with the terminals 51. In this flow soldering, with the holding member 60 inserted into the through-hole 34 and the locking portions 63a and 63b positioned on the back surface 31b of the wiring substrate 31, the entire back surface 31b or local portion of the wiring substrate 31 is made of molten solder. Soaked. Then, the plated layer formed on the wall surface of the through hole 34 and the periphery of the opening and the legs 62a and 62b of the holding member 60 are wetted by the molten solder, and the molten solder is exposed to the surfaces of the locking portions 63a and 63b and the connecting portions 64a and 64b. Or is sucked into the through hole 34 along the wall surface of the through hole 34. As shown in FIG. 7, the melted solder 35 is sucked up onto the surface 31 a of the wiring board 31. As a result, a fillet of solder 35 is formed on the surface 31 a of the wiring board 31 so as to cover the connecting portions 64 a and 64 b and the surface 31 a of the wiring board 31. Further, on the back surface 31 b of the wiring substrate 31, a fillet of solder 35 that covers the locking portions 63 a and 63 b and the back surface 31 b of the wiring substrate 31 is formed. Thus, in this embodiment, the holding member 60 is also connected to the plating layer formed on the wall surface of the through hole 34 and the periphery of the opening via the solder 35.

  As described above, the holding member 60, the connector 50 having the holding member 60, and the electronic control device 1 having the connector 50 described in the present embodiment have the following characteristics. First, the holding member 60 has a base portion 61 and a leg portion 62 (62a, 62b) formed by opening the same metal plate, and the leg portion 62 passes through the through hole 34 and is fixed to the back surface of the wiring board 31. It has the latching | locking part 63 (63a, 63b) located on the opening periphery in 31b. Further, due to the displacement of the spring portion 65 (65a, 65b) connected to the locking portion 63 via the connecting portion 64 (64a, 64b), the locking portion 63 passes through the through hole 34, and on the back surface 31b of the wiring board 31. Located in. The engaging portion 63 is engaged with the back surface 31 b of the wiring board 31 when an external force (external force for removing the connector 50 from the wiring board 31) is applied to pull out the leg 62 from the through hole 34. Therefore, the strength against pulling is improved as compared with the conventional case, whereby the holding strength of the connector 50 with respect to the wiring board 31 can be improved. That is, at least before the terminals 51 are soldered, it is possible to make the connector 50 less likely to come off the wiring board 31 than before.

  Further, in the leg portion 62, the locking portion 63 that locks the wiring board 31 and the spring portion 65 are configured at different positions, so that the spring portion 65 is not inserted into the through hole 34. That is, the spring portion 65 itself does not lock onto the wiring board 31 by the reaction force due to its deformation, but causes the locking portion 63 (and the connecting portion 64) to be inserted into the through hole 34, thereby locking the locking portion 63. However, it is only necessary to have a spring property that allows the locking portion 63 to be positioned on the back surface of the wiring board 31 when passing through the through hole 34. In other words, when inserting the locking portion 63 (and the connecting portion 64) into the through hole 34, there is no need for a spring property such that the corner portion of the locking portion 63 strongly hits the wall surface of the through hole 34, Thereby, the insertion force of the latching | locking part 63 (and connection part 64) with respect to the through-hole 34 can be reduced. Therefore, damage to the wall surface of the through hole 34 (plated layer formed on the wall surface) can be reduced as compared with the conventional configuration in which the spring portion itself is locked to the wall surface of the through hole. Moreover, the design freedom of the spring part 65 can also be improved.

  In the present embodiment, the width W of the spring portion 65 is wider than the plate thickness T of the metal plate. Therefore, when the strength of the spring portion 65 is increased and the locking portion 63 (and the connecting portion 64) is inserted into the through hole 34 or when an external force is applied to pull out the leg portion 62 from the through hole 34, the spring The deformation and breakage of the portion 65 can be suppressed.

  Moreover, in this embodiment, the latching | locking part 63 is formed only by stamping a metal plate. Thus, if the latching | locking part 63 is formed only by a punching process, yield strength can be improved with respect to a deformation | transformation and a damage rather than a bending process. Thereby, the holding strength of the connector 50 with respect to the wiring board 31 can be further improved.

  Moreover, in this embodiment, the spring part 65 is made into the substantially U shape. When the folded spring portion 65 such as a substantially U shape is employed in this way, the spring length in the extending direction (longitudinal direction) can be increased to increase the displacement (stroke) of the spring portion 65. Therefore, it is possible to increase the length of the locking portion 63 and make it difficult for the locking portion 63 to come off the back surface 31 b of the wiring board 31. That is, it is possible to prevent the leg portion 62 from coming off from the through hole 34 (detachment of the connector 50 from the wiring board 31).

  In the present embodiment, the holding member 60 has a pair of opposite leg portions 62a and 62b extending in the same direction from the base portion 61, and the locking portions 63a and 63b in the leg portions 62a and 62b. The extending directions from the corresponding connecting portions 64a and 64b are opposite to each other. As described above, when the plurality of leg portions 62 are extended from one base portion 61, the connector 50 with respect to the wiring board 31 is compared with the configuration in which only one leg portion 62 is extended from the base portion 61. Holding strength can be improved. In addition, since the paired locking portions 63a and 63b extend in different directions, the backlash of the wiring board 31 is less than that of the configuration in which the paired locking portions 63a and 63b extend in the same direction. Can be reduced. Thereby, it is possible to make it difficult for the locking portions 63 a and 63 b to be detached from the back surface 31 b of the wiring substrate 31. In particular, in the present embodiment, the locking portions 63a and 63b forming a pair extend in opposite directions, so that the rattling can be effectively reduced.

  Further, in the present embodiment, the through hole 34 into which the leg portions 62a and 62b of the holding member 60 are inserted is a long hole in one direction, and the locking portions 63a and 63b in the leg portions 62a and 62b are formed. , Extending from the connecting portions 64a and 64b along the longitudinal direction of the through hole 34, and extending directions from the connecting portions 64a and 64b are opposite to each other. The locking portions 63 a and 63 b are positioned on the periphery of the opening on the longitudinal side of the through hole 34 in the back surface 31 b of the wiring substrate 31. Thus, when the through hole 34 is a long hole, the inclination of the connecting portions 64a and 64b at the time of insertion can be made larger than that of a circular through hole having the same cross-sectional area. That is, the reaction force of the spring portions 65a and 65b can be reduced, and the insertion force of the locking portions 63a and 63b (and the connecting portions 64a and 64b) into the through hole 34 can be reduced. Therefore, when the engaging portions 63a and 63b and the connecting portions 64a and 64b are inserted into the through hole 34, damage to the wall surface of the through hole 34 can be reduced. In the present embodiment, the longitudinal direction of the through hole 34 is substantially parallel to the short direction (front-rear direction) of the housing 52 of the connector 50. Accordingly, it is possible to improve the degree of freedom of wiring arrangement on the wiring board 31.

  In the present embodiment, the connecting portion 64 is not in contact with the wall surface of the through hole 34 in a fixed state. That is, since there is a gap between the outer portion of the connecting portion 64 and the through-hole 34, when performing flow soldering, molten solder is easily sucked up through this gap due to capillary action. That is, the connection reliability between the holding member 60 and the wiring board 31 (plating layer) via solder can be improved.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a perspective view illustrating a schematic configuration of a holding member according to the second embodiment. FIG. 9 is a developed view of the leg portion of the holding member shown in FIG.

  Since the holding member according to the second embodiment, the connector having the holding member, and the electronic control device having the connector are often in common with those shown in the above-described embodiment, the detailed description of the common parts will be given below. Omitted and focused on the differences. In addition, the same code | symbol shall be provided to the element same as the element shown to each above-mentioned embodiment.

  In 1st Embodiment, the spring part 65 (65a, 65b) showed the example which is substantially U shape. However, the shape of the spring portion 65 is not limited to the above example. It is only necessary that the displacement portion 63 and the connecting portion 64 can be inserted into the through-hole 34 and the engagement portion 63 can be positioned on the back surface 31 b of the wiring substrate 31 by the displacement. In this embodiment, as shown in FIG. 8, a flat plate spring is employed as the spring portion 65 (65a, 65b). In the example shown in FIG. 8, a pair of leg portions 62 a and 62 b are extended from the same base portion 61.

  Specifically, when described with one leg portion 62a, a crank-like connecting portion 66a extends downward from the base portion 61 on the same plane as the base portion 61 which is a substantially rectangular flat plate. The flat spring portion 65a is extended from the connecting portion 66a by being bent at approximately 90 °. The spring portion 65a is substantially parallel to the surface 31a of the wiring board 31 when not displaced. And the connection part 64a similar to 1st Embodiment is extendedly bent by about 90 degrees from the edge part of the spring part 65a. Further, the locking portion 63a extends in the front (rear) direction from the connecting portion 64a on the same plane as the lower end of the linear connecting portion 64a. That is, the configuration other than the spring portion 65a and the connecting portion 66a is the same as that of the first embodiment.

  Such a holding member 60 can also be formed by punching a flat metal plate and bending it partially. Specifically, a flat metal plate is punched into the shape shown in FIG. At this stage, the connecting portions 66a and 66b, the spring portions 65a and 65b, the connecting portions 64a and 64b, and the locking portions 63a and 63b are configured on the same plane as the base portion 61. With respect to the flat holding member 60, the boundary 70 (broken line) between the connecting portions 66a and 66b and the spring portions 65a and 65b is bent by approximately 90 °. Further, the boundary 71 (broken line) between the spring portions 65a and 65b and the connecting portions 64a and 64b is bent approximately 90 ° opposite to the bending direction. In this way, the holding member 60 shown in FIG. 8 is formed from one metal plate. Also in this case, the locking portions 63a and 63b are formed only by punching without bending.

  In this way, when the flat spring portion 65 (65a, 65b) is employed, when the holding member 60 (connector 50) is pushed into the wiring board 31 side and the locking portions 63a, 63b come into contact with the wiring board 31, a wedge shape is obtained. The locking portions 63a and 63b of the springs 65a and 65b are displaced with the portion supported by the base 61 (the connecting portions 66a and 66b) as a fulcrum so that the locking portions 63a and 63b move to the inside of the through hole 34 along the inclination thereof ( Elastic deformation). Specifically, in the flat spring portions 65a and 65b, at least the connecting end side with the connecting portions 64a and 64b is displaced upward. Due to the displacement of the spring portions 65 a and 65 b, wedge-shaped locking portions 63 a and 63 b are inserted into the through holes 34. Further, the connecting portions 64a and 64b themselves hardly undergo elastic deformation, and are inclined with respect to the fixed state (or the state before insertion). That is, the spring portions 65 a and 65 b are displaced so that the connecting portions 64 a and 64 b are inclined and the locking portions 63 a and 63 b are inserted into the through holes 34. When the holding member 60 (connector 50) is further pushed in while the corner portions of the locking portions 63a and 63b are brought into contact with the wall surface of the through hole 34 by the reaction force (restoring force) due to elastic deformation of the spring portions 65a and 65b, The stop parts 63a and 63b pass through the through hole 34. Then, due to the reaction force of the spring portions 65 a and 65 b, at least a part of the locking portions 63 a and 63 b is located on the back surface of the wiring substrate 31 and on the periphery of the opening of the through hole 34. In this manner, a flat plate spring can be employed as the spring portion 65 of the holding member 60. When the flat spring portion 65 is employed, a bending process such as a substantially U shape can be eliminated.

  In addition, the spring parts 65a and 65b shown in FIG. 8 are linear in the extending direction (longitudinal direction). However, as the flat plate spring, a folded shape such as a substantially U-shaped spring portion 65 (65a, 65b) shown in FIG. 10 may be employed. In this case, even if it is flat, the spring length in the extending direction can be increased, and the displacement amount (stroke) of the spring portion 65 can be increased. In addition to the substantially U-shape, a meandering shape can be adopted. The holding member 60 shown in FIG. 10 is also formed by punching a flat metal plate as shown in FIG. 11, bending the boundary 72 (broken line) between the connecting portions 66a and 66b and the spring portions 65a and 65b by approximately 90 °, The boundary 73 (broken line) between the portions 65a and 65b and the connecting portions 64a and 64b can be obtained by bending approximately 90 ° opposite to the bending direction. FIG. 10 is a perspective view showing a modification. FIG. 11 is a development view of a leg portion of the holding member shown in FIG. 10.

(Third embodiment)
Next, 3rd Embodiment of this invention is described based on FIG.12 and FIG.13. FIG. 12 is a schematic partial cross-sectional view for explaining plating layer damage due to the locking portion. FIG. 13: is a top view which shows schematic structure of a latching | locking part among the holding members which concern on 3rd Embodiment, (a), (b).

  Since the holding member according to the third embodiment, the connector having the holding member, and the electronic control unit having the connector are often in common with those shown in the above-described embodiment, detailed descriptions of the common parts will be given below. Omitted and focused on the differences. In addition, the same code | symbol shall be provided to the element same as the element shown to each above-mentioned embodiment.

  In the above-described embodiment, the shape of the corner portion of the locking portion 63 is not particularly mentioned. For example, as shown in FIG. 12, when the corner portion 74 of the locking portion 63 (63a, 63b) has an angular shape (angle of 90 ° or less), the leg portion 62 (62a, 62b) to the through hole 34 At the time of insertion, when the latching portion 63 penetrates the through hole 34, at least a part of the latching portion 63 penetrates and the reaction force (restoring force) of the spring portion 65 (65 a, 65 b) is outside the through hole 34. Move to. Therefore, there is a risk that the corner portion 74 may scrape (bounce off) the plating layer 36a at the end portion of the wall surface (opening portion) in the plating layer 36 formed around the wall surface of the through hole 34 and the opening. In FIG. 12, the state immediately before the locking portion 63 penetrates the through hole 34 is indicated by a solid line, and the state positioned on the back surface 31 b of the wiring substrate 31 is indicated by a dashed line.

  On the other hand, in the example shown in FIG. 13A, in the direction perpendicular to the vertical direction (in the present embodiment, the front-rear direction as in the first embodiment), the locking portion 63 is fixed from the through hole 34 in the fixed state. The corner portion 74 at the farthest position has a polygonal shape formed by connecting a plurality of angles (three in FIG. 13A) larger than 90 °. In the example shown in FIG. 13B, the corner 74 has a rounded shape. When the shape of the corner portion 74 in the locking portion 63 is the above shape, the pressure applied to the plating layer 36a is reduced, and the plating layer shaving due to the corner portion 74 can be suppressed.

(Fourth embodiment)
Next, 4th Embodiment of this invention is described based on FIG.14 and FIG.15. FIG. 14 is a partial cross-sectional view showing the relationship between the leg portion of the holding member and the through hole of the wiring board in the electronic control device according to the fourth embodiment. FIG. 15 is a partial cross-sectional view showing a state where the connector is held on the wiring board by the holding member.

  Since the holding member according to the fourth embodiment, the connector having the holding member, and the electronic control device having the connector are often in common with those shown in the above-described embodiment, detailed descriptions of the common parts will be given below. Omitted and focused on the differences. In addition, the same code | symbol shall be provided to the element same as the element shown to each above-mentioned embodiment.

  In the above-described embodiment, the distance S between the outer portions of the connecting portions 64a and 64b in the pair of leg portions 62a and 62b extending in the same direction from the base portion 61 without the spring portion 65 being displaced is the through hole. An example shorter than the width (inner diameter) D of 34 is shown. On the other hand, in the present embodiment, as shown in FIG. 14, in a pair of leg portions 62a and 62b facing each other, the distance S between the outer portions of the connecting portions 64a and 64b is equal to or greater than the width D of the through hole 34. It has become the length. With such a configuration, as shown in FIG. 15, at least a part of the connecting portions 64 a and 64 b comes into contact with the wall surface of the through hole 34 in a fixed state. Therefore, since the holding member 60 is surely in contact with the wiring board 31 in a fixed state, rattling between the wiring board 31 and the connector 50 can be suppressed. In this case, the spring portions 65a and 65b are not displaced in a fixed state.

  Further, when the connecting portions 64a and 64b are linear, for example, as shown in FIG. 14, the width between the outer portions of the connecting portions 64a and 64b in a fixed state as shown in FIG. The width S1 at the opening of the through hole 34 on the back surface 31b of the wiring board 31 is smaller than the width S2 at the opening of the through hole 34 on the front surface 31a. That is, a gap 75 is generated between the outer portion of the coupling portions 64a and 64b and the wall surface facing the through hole 34 from the opening of the through hole 34 on the back surface 31b of the wiring board 31 to a predetermined range on the front surface 31a side. Become. Therefore, when flow soldering is performed from the back surface 31 b side of the wiring board 31, the molten solder is transmitted through the gap 75 by a capillary phenomenon, and the solder can be easily sucked up to the front surface 31 a side of the wiring board 31.

  For example, as shown in FIG. 16, the connecting portion 64a has a shape in which the width H of the connecting portions 64a and 64b is increased from the connecting end with the locking portions 63a and 63b toward the connecting end of the spring portions 65a and 65b. , 64b, the effect of the gap 75 can be expected. In this case, it is possible to prevent the spring portions 65a and 65b from being displaced in a fixed state. FIG. 16 is a partial cross-sectional view showing a modification.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 17 is an enlarged partial cross-sectional view of the periphery of the holding member, which is a characteristic part, in the electronic control device according to the fifth embodiment. FIG. 17A shows the thickness of the wiring board P1, and FIG. The case where the thickness of the wiring board is P2 (> P1) is shown.

  Since the holding member, the connector having the holding member, and the electronic control device having the connector according to the fifth embodiment are often in common with those shown in the above-described embodiment, detailed descriptions of the common parts will be given below. Omitted and focused on the differences. In addition, the same code | symbol shall be provided to the element same as the element shown to each above-mentioned embodiment.

  In the above-described embodiment, the example in which the locking portion 63 (63a, 63b) is wedge-shaped and the surface facing the back surface 31b of the wiring board 31 is substantially parallel to the back surface 31b is shown. In the holding member 60 having the locking portion 63 having such a shape, due to the facing distance between the positioning portion (not shown) of the housing 52 in contact with the front surface 31a of the wiring substrate 31 and the facing surface of the back surface 31b of the locking portion 63. The thickness of the wiring board 31 that can hold the connector 50 is determined. In contrast, in the present embodiment, for example, as shown in FIG. 17A, a portion 76 facing the back surface 31b of the wiring board 31 in the wedge-shaped locking portion 63 is substantially perpendicular to the vertical direction ( In the present embodiment, the taper is farther from the surface 31a of the wiring board 31 in the up-down direction in the fixed state as the distance from the corresponding connecting portion 64 in the front-back direction) increases.

  With such a configuration, even if there are manufacturing variations or assembly variations in the holding member 60, the wiring board 31, the housing 52, etc. within a tolerance range in the vertical direction, the locking portion 63 is connected to the back surface 31b of the wiring board 31. Can be locked. That is, rattling between the wiring board 31 and the connector 50 can be suppressed. Further, the holding member 60 having the same configuration can be a common member for the wiring boards 31 having different thicknesses (a plurality of types of wiring boards 31 having different thicknesses). For example, in the example shown in FIG. 17B, the holding member 60 applied to the wiring board 31 having the thickness P1 shown in FIG. 17A is applied to the wiring board 31 having a thickness P2 thicker than P1. In addition, the spring part 65 (65a, 65b) is not displaced in the state shown in FIG. 17A, and is in a displaced state in the state shown in FIG. 17B.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with reference to FIG. FIG. 18 is an enlarged partial cross-sectional view of the periphery of the holding member, which is a characteristic part, in the electronic control device according to the sixth embodiment, and shows a time when the leg portion is inserted into the through hole.

  Since the holding member according to the sixth embodiment, the connector having the holding member, and the electronic control device having the connector are often in common with those shown in the above-described embodiment, a detailed description of the common parts will be given below. Omitted and focused on the differences. In addition, the same code | symbol shall be provided to the element same as the element shown to each above-mentioned embodiment.

  In the present embodiment, as shown in FIG. 18, the holding member 60 having a pair of leg portions 62a and 62b extending in the same direction from the base portion 61 has a leg portion 62a and 62b extending in the extending direction from the base portion 61. And a tilt limiting portion 77 extending at least between the pair of connecting portions 64a and 64b whose ends are opposed to each other. The inclination limiting portion 77 is provided apart from the connecting portions 64a and 64b in a state before the leg portions 62a and 62b are inserted into the through hole 34. Specifically, as shown in FIG. 18, the inclination limiting portion 77 extends from the base portion 61, is connected to a connecting portion 77 a located on the same plane as the base portion 61, and a lower end of the connecting portion 77 a, and has an inverted L shape. And an intermediate portion 77b that is partly disposed in a region facing the connecting portions 64a and 64b. The intermediate portion 77b is formed such that a part of the end face 67 (not shown) disposed in the facing region faces the inner end face 67 (not shown) of the connecting portions 64a and 64b.

  With such a configuration, the inclination of the connecting portions 64a and 64b can be limited by the inclination limiting portion 77 (intermediate portion 77b) provided between the pair of leg portions 62a and 62b (connecting portions 64a and 64b). it can. Therefore, for example, when the pair of leg portions 62a and 62b is inserted into the through hole 34, even if the positional relationship between the through hole 34 and the leg portions 62a and 62b deviates from a predetermined relationship, the connecting portions 64a and 64b Since it stops at the inclination restricting portion 77, the connecting portions 64a and 64b are not inclined more than necessary. That is, the deformation and breakage of the leg portions 62a and 62b can be suppressed. In addition, since there is an inclination limiting portion 77 (intermediate portion 77b) between the connecting portions 64a and 64b, when performing flow soldering, a gap between the connecting portion 64a and the intermediate portion 77b is caused by capillary action. The molten solder is transmitted through the gap between the connecting portion 64b and the intermediate portion 77b, and the solder can be easily sucked up to the surface 31a side of the wiring board 31. In this case, the inclination restricting portion 77 is also in contact with the solder, and the contact area between the holding member 60 and the solder is increased as compared with the configuration without the inclination restricting portion 77, so that the resistance to tension can be further improved. .

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  In this embodiment, the example which employ | adopts the holding member 60 by which a pair of leg part 62a, 62b was extended in the same direction from the one base 61 was shown. However, the number of leg portions 62 extending from the base portion 61 is not limited to the above example. For example, the holding members 60 fixed to both end portions of the housing 52 in the left-right direction may each have only one leg portion 62. In this case, for example, as shown in FIG. 19, if the extending direction of the locking portion 63 is opposite to each other by the different holding members 60 (in FIG. 19, the leftward outer side and the rightward outer side), The backlash in the extending direction of the stop part 63 can be reduced. Thereby, the latching | locking part 63 can be made hard to remove | deviate from the back surface 31b of the wiring board 31. FIG. FIG. 19 is a plan view showing another modification.

  In this embodiment, the example in which the latching | locking part 63 was formed only by stamping a metal plate was shown. However, the holding member 60 has an unfolded shape as shown in FIG. 20, for example, a boundary 78 (broken line) between the connecting portion 66a and the spring portion 65a, a boundary 79 (broken line) between the spring portion 65a and the connecting portion 64a, and a connecting portion 64a. The holding member 60 can also be obtained by bending approximately 90 ° at the boundary 80 (broken line) between the engaging portion 63a and the engaging portion 63a. In FIG. 20, only one leg 62a side is shown, but the other leg 62b is the same. FIG. 20 is a development view showing another modification.

  In this embodiment, the example of the electronic control apparatus 1 of the non-waterproof structure was shown as an electronic apparatus. However, the present invention can also be applied to a waterproof electronic control device. Moreover, it is not limited to an electronic control device.

  In the present embodiment, the example of the connector 50 is shown as an electronic component, but the electronic component held on the surface 31 a of the wiring board 31 by the holding member 60 is not limited to the connector 50.

  In this embodiment, the terminal 51 has an insertion mounting structure, and the terminal 51 and the holding member 60 are soldered to the land provided on the wall surface of the corresponding through holes 33 and 34 and the periphery of the opening by flow soldering. An example of electrical connection via a cable is shown. However, the mounting structure of the terminal 51 is not limited to the insertion mounting structure, and a terminal having a surface mounting structure can also be adopted.

  In the present embodiment, an example in which the holding member 60 is disposed outside the both side surfaces 52b of the housing 52 in the left-right direction is shown. However, the arrangement of the holding member 60 with respect to the housing 52 is not limited to the above example. For example, the holding member 60 may be disposed in a region between both side surfaces 52b of the housing 52 in the left-right direction.

  In the present embodiment, an example in which the holding member 60 is inserted into the groove portions 54 on the left and right end sides of the housing 52 from above is shown. However, the fixing structure of the holding member 60 with respect to the housing 52 is not limited to the above example. For example, a structure that is inserted and fixed from the front-rear direction may be used.

It is an exploded view for demonstrating schematic structure of the electronic controller which concerns on 1st Embodiment. It is a top view of the periphery of the mounting part in the state which mounted the connector on the wiring board. It is a perspective view which shows schematic structure of a holding member. It is an expanded view of a leg part among the holding members shown in FIG. It is a fragmentary sectional view which shows the time of insertion of the leg part to a through-hole. It is a figure which shows the state hold | maintained on the board | substrate surface, (a) is a fragmentary sectional view, (b) is the top view seen from the board | substrate back surface side. It is a fragmentary sectional view which shows the state after flow soldering. It is a perspective view which shows schematic structure of the holding member which concerns on 2nd Embodiment. It is an expanded view of a leg part among the holding members shown in FIG. It is a perspective view which shows a modification. It is an expanded view of a leg part among the holding members shown in FIG. It is a typical fragmentary sectional view for explaining plating layer damage by a locking part. (A), (b) is a top view which shows schematic structure of a latching | locking part among the holding members which concern on 3rd Embodiment. In the electronic control unit concerning a 4th embodiment, it is a fragmentary sectional view showing the relation between the leg of a holding member, and the penetration hole of a wiring board. It is a fragmentary sectional view which shows the state by which the connector was hold | maintained on the wiring board by the holding member. It is sectional drawing which shows a modification. It is the fragmentary sectional view which expanded the periphery of the holding member which is a characteristic part among the electronic control units concerning a 5th embodiment, (a) is thickness P1 of a wiring board, and (b) is the thickness of a wiring board. This shows the case where the length is P2 (> P1). In the electronic control device concerning a 6th embodiment, it is the fragmentary sectional view which expanded the circumference of the holding member which is the characterizing portion, and has shown at the time of insertion of the leg to a penetration hole. It is a top view which shows another modification. It is an expanded view which shows another modification.

Explanation of symbols

1 ... Electronic control device (electronic device)
31 ... Wiring board 31a ... front surface 31b ... back surface 34 ... (for holding member) through hole 50 ... connector (electronic component)
52 ... Housing (main body)
60 ... holding member 61 ... base 62, 62a, 62b ... leg 63, 63a, 63b ... locking part 64, 64a, 64b ... connecting part 65, 65a, 65b ... Spring part

Claims (16)

A base portion fixed to the electronic component; and at least one leg portion extending from the base portion, wherein the leg portion is inserted into a through hole of the substrate to hold the electronic component on the surface of the substrate. A holding member that
The leg is formed integrally with the base by processing the same metal plate,
A locking portion that is provided on the distal end side of the leg portion, and in which the electronic component is fixed to the substrate, and at least a part of the locking portion is located on the periphery of the opening of the through hole on the back surface of the substrate
One end portion is connected to the locking portion, and a connecting portion in which a part is disposed in the through hole in the fixed state;
One end of the connecting portion is connected to the end of the connecting portion opposite to the engaging portion, and is disposed on the surface of the substrate in the fixed state, and the engaging portion to the through hole and the connecting portion And a spring part that is displaced so that the coupling part is inclined with respect to the fixed state and the locking part is inserted into the through hole during insertion.   The holding member according to claim 1, wherein a width of the spring portion in a short direction is wider than a plate thickness of the metal plate.   The holding member according to claim 1 or 2, wherein the locking portion is formed only by punching the metal plate.   The holding | maintenance of any one of Claims 1-3 characterized by the above-mentioned. The said spring part is bent by the substantially U shape by which the base and the folding | turning part which opposes this base were connected by the bending part. Element.   The holding member according to claim 1, wherein the spring portion has a flat plate shape. As the legs, a pair of legs extending in the same direction from the base and facing each other,
The holding member according to any one of claims 1 to 5, wherein the engaging portions of the pair of leg portions have different directions extending from the connecting portion.   An inclination limiting portion that extends at least from the base portion to a pair of the coupling portions that are in the same direction as the leg portions and whose distal ends face each other, and is provided apart from the coupling portion in a state before insertion. The holding member according to claim 6.   The locking portion is a polygonal shape in which a corner portion which is the farthest from the through hole in the fixed state in a direction substantially perpendicular to the thickness direction of the substrate connects a plurality of corners larger than 90 °. The holding member according to claim 1, wherein the holding member has a rounded shape.   The locking portion is farther from the surface of the base in the thickness direction of the substrate as the position where the portion facing the back surface of the substrate is away from the coupling portion in a direction substantially perpendicular to the thickness direction of the substrate. The holding member according to claim 1, wherein the holding member is tapered. An electronic component comprising a main body part and a holding member that holds the main body part on the surface of the substrate in which the through hole is formed,
The holding member includes a base fixed to the main body, and at least one leg extending from the base and inserted into the through hole.
The leg is formed integrally with the base by processing the same metal plate,
A locking portion that is provided on the distal end side of the leg portion and is fixed to the substrate, and at least a part thereof is positioned on the periphery of the opening of the through hole on the back surface of the substrate;
One end portion is connected to the locking portion, and a connecting portion in which a part is disposed in the through hole in the fixed state;
One end of the connecting portion is connected to the end of the connecting portion opposite to the engaging portion, and is disposed on the surface of the substrate in the fixed state, and the engaging portion to the through hole and the connecting portion An electronic component comprising: a spring portion that is displaced so that the connecting portion is inclined with respect to the fixed state and inserted into the through hole when inserted. A plurality of the holding members are provided for one main body,
11. The electronic component according to claim 10, wherein the engaging part includes at least a pair of engaging parts whose directions extending from the connecting part are opposite to each other in the different holding members. A substrate having a through hole formed thereon;
An electronic device comprising a main body part and an electronic component having a holding member that holds the main body part on the surface of the substrate,
The holding member includes a base fixed to the main body, and at least one leg extending from the base and inserted into the through hole.
The leg is formed integrally with the base by processing the same metal plate,
A locking portion that is provided on the distal end side of the leg portion, and in which the electronic component is fixed to the substrate, and at least a part of the locking portion is located on the periphery of the opening of the through hole on the back surface of the substrate
One end portion is coupled to the locking portion, and a coupling portion in which a part is disposed in the through hole in the fixed state;
One end of the connecting portion is connected to the end of the connecting portion opposite to the engaging portion, and is disposed on the surface of the substrate in the fixed state, and the engaging portion to the through hole and the connecting portion An electronic device comprising: a spring portion that is displaced so that the connecting portion is inclined with respect to the fixed state and inserted into the through hole when inserted. As the legs, a pair of legs extending in the same direction from the same base and facing each other,
The electronic device according to claim 12, wherein the engaging portions of the pair of leg portions have opposite directions extending from the connecting portion. The through hole is a long hole long in one direction,
The engaging portions of the pair of leg portions extend from the connecting portion along the longitudinal direction of the through hole, and the extending directions are opposite to each other, and the opening on the longitudinal side of the through hole on the back surface of the substrate The electronic device according to claim 13, wherein the electronic device is located on a periphery.   In the pair of leg portions, a width between outer portions facing the wall surface of the through hole in the connecting portion is equal to or greater than a width between portions facing the outer portion in the through hole. The electronic device according to claim 13 or 14.   In the pair of legs, the width between the outer portions facing the through hole in the connecting portion is in the fixed state, and the width at the opening of the through hole in the back surface of the substrate is larger on the surface of the substrate. The electronic device according to claim 13, wherein the electronic device is narrower than a width at an opening of the through hole.

Images