JP7201309B2 - Positioning structure - Google Patents

Description

The present invention relates to a positioning structure.

2. Description of the Related Art Various techniques are known for arranging a board mounted on an electronic device at a predetermined position in the manufacturing process of an electronic device such as an in-vehicle device. For example, Japanese Patent Laid-Open No. 2002-200001 describes forming a guide portion on an object on which the substrate is placed to guide the substrate so that the positional relationship between the object and the substrate is appropriate. In the positioning structure described in Patent Literature 1, when an operator places the substrate on the object, the object and the substrate are connected via the guide portion, so that the connection formed in both the object and the substrate Alignment of parts becomes easier.

JP 2016-4798 A

Also, it is known to connect a pair of substrates via a connection member such as a board-to-board connector (hereinafter also simply referred to as a connector) that is soldered to each of the substrates. When connecting a pair of substrates via a connector, the connecting members can be connected easily and reliably by connecting the connecting members using the guide portion. However, when the connecting members arranged on the substrates are connected using the guide portions, the positional relationship between the two substrates is uniquely determined. When the arrangement position is misaligned, stress is generated in the solder that joins the board and the connection member. When stress is generated in the solder that joins the board and the connection member, the solder that joins the board and the connection member deteriorates over time, causing cracks and the like. Problems such as disconnection may occur.

The present invention is intended to solve such problems, and even if the arrangement position between the connection member and the guide portion that are joined to the substrate is misaligned, the stress is applied to the joint portion that joins the substrate and the connection member. An object of the present invention is to provide a positioning structure with a low risk of occurrence of

In order to achieve the above object, a positioning structure according to the present invention is a positioning structure for positioning a first member and a second member connected to the first member by a connecting member, wherein the first member or the second member and a positioning member having a protrusion that is inserted into the through hole of the other of the first member or the second member, and the protrusion guides the through hole to a position where the connecting member starts to be connected It has a guide portion and a relief portion for canceling the guide of the through-hole when the connection member is completely connected.

Moreover, in the positioning structure according to the present invention, it is preferable that the recessed portion is provided at a position spaced apart from the tip of the projection by a predetermined distance, and is a constricted portion having a smaller thickness or width than the guiding portion.

Further, in the positioning structure according to the present invention, it is preferable to have a transition portion between the guide portion and the constricted portion, the thickness or width of which gradually changes from the guide portion to the constricted portion.

Moreover, in the positioning structure according to the present invention, each of the protrusions is preferably a flat member.

Also, the positioning structure according to the present invention preferably includes at least two protrusions, and one of the protrusions preferably has a surface direction different from that of the other protrusions.

Moreover, in the positioning structure according to the present invention, it is preferable that the two or more protrusions are integrally formed by bending and raising a single plate member.

Moreover, in the positioning structure according to the present invention, it is preferable that the positioning member further includes a supporting portion that supports the first member and the second member with a predetermined distance therebetween.

According to the present invention, it is possible to reduce the possibility that stress is generated in the joint portion that joins the substrate and the connection member even when the arrangement positions between the connection member and the guide portion that are joined to the substrate are misaligned. became possible.

1 is a perspective view of an example of a positioning structure according to an embodiment; FIG. (a) is a plan view of the first mounting board shown in FIG. 1, (b) is a front view of the first mounting board shown in (a), and (c) is the first mounting board shown in (a). is a side view of the. (a) is a plan view of the second mounting board shown in FIG. 1, (b) is a front view of the second mounting board shown in (a), and (c) is the second mounting board shown in (a). is a side view of the. FIG. 2 is a plan view of the holding member shown in FIG. 1; (a) is a front view of the holding member seen from the direction indicated by arrow A in FIG. 4, and (b) is a rear view of the holding member seen from the direction indicated by arrow B in FIG. (c) is a left side view of the holding member seen from the direction indicated by arrow C in FIG. 4, and (d) is a right side view of the holding member seen from the direction indicated by arrow D in FIG. (e) is a partially enlarged front view of the first protrusion, and (f) is a partially enlarged front view of the second protrusion. FIG. 4A is a diagram showing the positional relationship between the first printed circuit board and the first protrusion when connecting the first connector and the second connector, FIG. The second state is shown next, (c) shows the third state next to the second state, and (d) shows the fourth state next to the third state. It is a figure which shows the modification of a projection part, (a) shows a 1st modification, (b) shows a 2nd modification, (c) shows a 3rd modification.

A positioning structure according to the present invention will be described with reference to the following drawings. However, it should be noted that the technical scope of the present invention is not limited to those embodiments, but extends to equivalents of the invention described in the claims. A positioning structure according to the present invention includes a first board and a second board that are connected via a connecting member such as a connector, and a positioning member that determines the connection position of the first board and the second board. The positioning member includes a support portion, and a guide portion which is a protrusion extending from the support portion toward the first substrate, the guide portion having at least an end portion in the width direction spaced from the opposite surface of the first substrate. and a relief portion located between the support portion and the guide portion and having a width narrower than that of the guide portion. Since the guide portion of the positioning member appropriately guides the positions of both the first substrate and the second substrate when connecting the first substrate and the second substrate, the connecting member for connecting the first substrate and the second substrate is Connection is easy. Further, after the first substrate and the second substrate are connected, the clearance portion of the positioning member fixes the first substrate so as to be movable in the width direction. Even if the arrangement position is misaligned, there is little possibility that stress will be generated in the joint portion where the substrate and the connection member are joined.

(Configuration of positioning structure according to embodiment)
FIG. 1 is a perspective view of a board connection structure, which is an example of a positioning structure according to an embodiment.

The board connection structure 1 includes a first mounting board 10 , a second mounting board 20 , and a holding member 30 that is an example of a positioning member and holds both the first mounting board 10 and the second mounting board 20 . The first mounting board 10 includes a first printed board 11 and a first connector 12 mounted on the first printed board 11 by soldering. The second mounting board 20 includes a second printed board 21 and a second connector 22 mounted on the second printed board 21 by soldering and fitted with the first connector 12 . The first mounting board 10 and the second mounting board 20 are electrically connected via the first connector 12 and the second connector 22 . The holding member 30 has first protrusions 40A and 40C penetrating through holes formed in the first printed circuit board 11 and second protrusions 40E and 40G penetrating through holes formed in the second printed circuit board 21. have. The holding member 30 holds the first printed board 11 and the second printed board 21 so that the distance between the first printed board 11 and the second printed board 21 is the total height of the first connector 12 and the second connector 22 . A substrate 21 is held.

The first mounting board 10 and the holding member 30 are positioned at desired positions by allowing the pair of first protrusions 40A and 40C of the holding member 30 to pass through the through holes formed in the first mounting board 10. . Also, the first mounting board 10 and the holding member 30 are coupled by four screws 50A to 50D.

The second mounting board 20 and the holding member 30 are positioned at desired positions by allowing the pair of second protrusions 40E and 40G of the holding member 30 to pass through the through holes formed in the second mounting board 20. . Also, the second mounting board 20 and the holding member 30 are coupled by a screw 50H (not shown) positioned diagonally from the screws 50E to 50G and the screw 50F.

2(a) is a plan view of the first mounting board 10, FIG. 2(b) is a front view of the first mounting board 10, and FIG. 2(c) is a side view of the first mounting board 10. .

The first printed circuit board 11 has a first surface 13 and a first back surface 14 opposite the first surface 13 . The first connector 12 is mounted on the first surface 13 of the first printed circuit board 11 by soldering, and is electrically connected to wiring (not shown) formed on the first surface 13 and the first back surface 14 of the first printed circuit board 11 . Connected.

The first printed circuit board 11 penetrates from the first surface 13 to the first back surface 14, and the first through holes 15A are a pair of through holes through which the pair of first protrusions 40A and 40C of the holding member 30 respectively penetrate. and 15C are formed. Further, the first printed circuit board 11 penetrates from the first surface 13 to the first rear surface 14, and is screwed with each of the four screws 50A to 50D to connect the first printed circuit board 11 and the holding member 30. First screw holes 16A to 16D are formed.

3(a) is a plan view of the second mounting board 20, FIG. 3(b) is a front view of the second mounting board 20, and FIG. 3(c) is a side view of the second mounting board 20. .

The second printed circuit board 21 has a second surface 23 and a second back surface 24 opposite the second surface 23 . The second connector 22 is mounted on the second surface 23 of the second printed circuit board 21 by soldering, and is electrically connected to wiring (not shown) formed on the second surface 23 and the second back surface 24 of the second printed circuit board 21. Connected.

The second printed circuit board 21 penetrates from the second surface 23 to the second back surface 24, and the second through holes 25E, which are a pair of through holes through which the pair of second protrusions 40E and 40G of the holding member 30 respectively penetrate. and 25G are formed. Further, the second printed circuit board 21 penetrates from the second surface 23 to the second rear surface 24, and is screwed with each of the four screws 50E to 50H to connect the second printed circuit board 21 and the holding member 30. Second screw holes 26E to 26H are formed.

4 is a plan view of the holding member 30, FIG. 5(a) is a front view of the holding member 30 viewed from the direction indicated by arrow A in FIG. 4, and FIG. 2 is a rear view of the holding member 30 viewed from the direction indicated by . 5(c) is a left side view of the holding member 30 seen from the direction indicated by arrow C in FIG. 4, and FIG. 5(d) is a left side view of the holding member 30 seen from the direction indicated by arrow D in FIG. It is a right side view. FIG. 5(e) is a partially enlarged front view of the first protrusion 40A, and FIG. 5(f) is a partially enlarged front view of the second protrusion 40E.

The holding member 30 includes a base portion 31, first arm portions 32A to 32D and second arm portions 32E to 32H, first support portions 33A to 33D and second support portions 33E to 33H, and first protrusions 40A and 40C. and second projections 40E and 40G. Base 31, first arm portions 32A to 32D and second arm portions 32E to 32H, first support portions 33A to 33D and second support portions 33E to 33H, first protrusions 40A and 40C and second protrusions 40E and 40G is one piece. The first arm portions 32A to 32D and the second arm portions 32E to 32H, the first support portions 33A to 33D and the second support portions 33E to 33H, the first protrusions 40A and 40C and the second protrusions 40E and 40G are It is formed by bending.

The base 31 has a frame-like shape with a rectangular opening 35 formed in the central portion through which both the first connector 12 and the second connector 22 can pass. The outer circumference of the base portion 31 includes a first side 311, a second side 312 opposite to the first side, a third side 313 perpendicular to the first side 311 and the second side 312, and a fourth side opposite to the third side 313. 314. The first side 311 of the base 31 is connected to the first arms 32A and 32B, and the second side 312 of the base 31 is connected to the first arms 32C and 32D. The third side 313 of the base 31 is connected to the second arms 32E and 32F, and the fourth side 314 of the base 31 is connected to the second arms 32G and 32H.

Each of the first arm portions 32A to 32D and the second arm portions 32E to 32H has a rectangular flat plate shape, and the first arm portions 32A to 32D extend in a first direction orthogonal to the extending direction of the base portion 31. , the second arms 32E to 32H extend in a direction opposite to the first direction.

Each of the first support portions 33A to 33D and the second support portions 33E to 33H has a rectangular plate-like shape and extends outward with respect to the base portion 31 in a direction parallel to the direction in which the base portion 31 extends. One side of each of the first support portions 33A and 33B is in contact with the upper sides of the first arm portions 32A and 32B and extends outward from the first side 311 of the base portion 31 in the second direction. One side of each of the first support portions 33C and 33D is in contact with the upper sides of the first arm portions 32C and 32D and extends in the direction opposite to the second direction in which the first support portions 33A and 33B extend. One side of each of the second support portions 33E and 33H is in contact with the lower sides of the second arm portions 32E and 32H and extends outward from the third side 313 of the base portion 31 in the third direction. One side of each of the second support portions 33F and 33G is in contact with the upper sides of the second arm portions 32F and 32G and extends in the direction opposite to the third direction in which the second support portions 33E and 33H extend.

The first supporting portions 33A to 33D are screwed together with the first screw holes 16A to 16D formed in the first printed circuit board 11 and the screws 50A to 50D, respectively, to connect the first printed circuit board 11 and the holding member 30. First screw holes 34A to 34D are formed to connect the .

Each of the second support portions 33E to 33H is screwed to each of the screws 50E to 50H together with the second screw holes 26E to 26H formed in the second printed circuit board 21, thereby connecting the second printed circuit board 21 and the holding member 30. second screw holes 34E to 34H are formed to connect the .

The distance between the surfaces of the first support portions 33A to 33D opposite to the base portion 31 and the surfaces of the second support portions 33E to 33H opposite to the base portion 31 is the distance between the first connector 12 and the second connector 22. match the total height of the first connector 12 and the second connector 22 when assembled. When the first connector 12 and the second connector 22 are connected, the surfaces of the first support portions 33A to 33D opposite to the base portion 31 are in contact with the first surface 13 of the first printed circuit board 11, and the second support portion 33E 33H are in contact with the second surface 23 of the second printed circuit board 21 . The holding member 30 is such that when the first connector 12 and the second connector 22 are connected, the distance between the first printed circuit board 11 and the second printed circuit board 21 is the total distance of the first connector 12 and the second connector 22 . The first mounting board 10 and the second mounting board 20 are held so as to match the height.

Each of the first protrusions 40A and 40C and the second protrusions 40E and 40G has a plate-like shape. The thickness of the first projections 40A and 40C is the same as the length of the first through holes 15A and 15C in the width direction, and the thickness of the second projections 40E and 40G is the same as the length of the width of the second through holes 25E and 25G. Same as direction length. The first protrusion 40A extends in a first direction orthogonal to the extending direction of the base 31 from the side of the first support 33A facing the side in contact with the first arm 32A. It extends in the first direction from the side perpendicular to the side of the portion 33C contacting the first arm portion 32C. Since the side where the first protrusion 40A contacts the first support 33A and the side where the first protrusion 40C contacts the first support 33C are perpendicular to each other, the plane of the first protrusion 40A and the plane of the first protrusion 40C are perpendicular to each other. are orthogonal to That is, the orientation of the plane of the first protrusion 40A and the plane of the first protrusion 40C are different.

The second projection 40E extends in the direction opposite to the first direction from the side of the second support 33E that faces the side that contacts the second arm 32E. It extends in the direction opposite to the first direction from the side orthogonal to the side in contact with the arm portion 32G. Since the side where the second protrusion 40E contacts the second support 33E and the side where the second protrusion 40G contacts the second support 33G are perpendicular to each other, the plane of the second protrusion 40E and the plane of the second protrusion 40G are perpendicular to each other. are orthogonal to That is, the plane of the second protrusion 40E and the plane of the second protrusion 40G are oriented differently.

The first projecting portion 40A has a first guide portion 41A, a first guide portion 42A, and a first relief portion 43A. The first guide portion 41A is located at the end of the first protrusion 40A and has an arcuate plane whose width becomes narrower toward the tip. The first guide portion 41A has an arcuate shape whose width narrows as it approaches the tip, so that the first connector 12 and the second connector 22 are in the positional relationship between the first mounting board 10 and the second mounting board 20. is guided to approach a predetermined connection position.

The first guide portion 42A is positioned between the first guide portion 41A and the first relief portion 43A and has a square plane. The width of the first guide portion 42A is equal to the longitudinal length of the first through hole 15A through which the first connector 12 and the second connector 22 are connected, that is, the width of the first through hole 15A. Since the first guide portion 42A has a width equal to the width of the first through hole 15A, the first mounting board 10 and the second mounting board 20 are arranged in the first direction while maintaining the connection position guided by the first guide portion 41A. The first connector 12 and the second connector 22 are guided until just before they are connected.

The first relief portion 43A is positioned between the first support portion 33A and the first guide portion 42A. The width of the first relief portion 43A is narrower than the width of the first guide portion 42A, that is, the maximum width of the first projection portion 40A. More specifically, the first relief portion 43A has an inverse tapered shape in which the width becomes narrower as it moves away from the first guide portion 41A and the first guide portion 42A and approaches the first support portion 33A. That is, the first escape portion 43A is provided at a position spaced apart by a predetermined distance from the tip of the first projection portion 40A, and includes a constricted portion having a smaller thickness or width than the first guide portion 41A. Further, the first relief portion 43A has a transition portion between the first guide portion 41A and the constricted portion in which the thickness or width gradually changes from the guide portion 41A to the constricted portion. Further, the height between the first support portion 33A and the first guide portion 42A, that is, the height of the first clearance portion 43A is higher than the thickness of the first printed circuit board 11. As shown in FIG. Since the width of the first relief portion 43A is narrower than the maximum width of the first protrusion 40A and the height is greater than the thickness of the first printed circuit board 11, when the first connector 12 and the second connector 22 are connected First, the first printed circuit board 11 is held movably in the width direction.

FIG. 6 is a diagram showing the positional relationship between the first printed circuit board 11 and the first protrusion 40A when connecting the first connector 12 and the second connector 22. As shown in FIG. 6(a) shows the first state, FIG. 6(b) shows the second state following the first state, FIG. 6(c) shows the third state following the second state, and FIG. ) indicates the fourth state next to the third state.

In the first state, the first printed circuit board 11 and the first protrusion 40A are separated from each other. Next, in the second state, the first guide portion 41A located at the tip of the first protrusion 40A is arranged to overlap the first through hole 15A formed in the first printed circuit board 11 . While the first guide portion 41A is arranged to overlap the first through hole 15A, the first printed circuit board 11 is guided to the connection position where the first connector 12 and the second connector are connected. Next, in the third state, the first guide portion 42A positioned below the first guide portion 41A is arranged to overlap the first through hole 15A formed in the first printed circuit board 11 . The first printed circuit board 11 is guided to the connection position where the first connector 12 and the second connector are connected while the first through hole 15A is included. In the fourth state, the first connector 12 and the second connector are connected, the first support portion 33A is in contact with the first printed circuit board 11, and the first through hole 15A formed in the first printed circuit board 11 is the first through hole 15A. It includes a first relief portion 43A positioned below the first guide portion 42A. When the first connector 12 and the second connector are connected, the first connector 12 can be can move in the width direction of the first protrusion 40A.

Since the configuration and function of the first protrusion 40C are the same as those of the first protrusion 40A, detailed description thereof is omitted here.

The second projecting portion 40E has a second guiding portion 41E, a second guiding portion 42E, and a second relief portion 43E. The second guide portion 41E is located at the end of the second protrusion 40E and has an arcuate plane whose width becomes narrower toward the tip. The second guide portion 41E has an arcuate shape whose width narrows as it approaches the tip, so that the first connector 12 and the second connector 22 are in the positional relationship between the first mounting board 10 and the second mounting board 20. is guided to approach a predetermined connection position.

The second guide portion 42E is located between the second guide portion 41E and the second relief portion 43E and has a square plane. The width of the second guide portion 42E is equal to the width of the second through hole 25E that penetrates when the first connector 12 and the second connector 22 are connected. Since the second guide part 42E has a width equal to the width of the second through hole 25E, the first mounting board 10 and the second mounting board 20 can be connected to each other while maintaining the connection position guided by the second guide part 41E. The first connector 12 and the second connector 22 are guided until just before they are connected.

The second relief portion 43E is located between the second support portion 33E and the second guide portion 42E. The width of the second relief portion 43E is narrower than the width of the second guide portion 42E, that is, the maximum width of the second projection portion 40E. More specifically, the second relief portion 43E has a reverse tapered shape whose width becomes narrower as it moves away from the second guide portion 41E and the second guide portion 42E and approaches the second support portion 33E. Further, the height between the second support portion 33E and the second guide portion 42E, that is, the height of the second relief portion 43E is higher than the thickness of the second printed circuit board 21. As shown in FIG. The second relief portion 43E has a width narrower than the width of the second guide portion 42E and a height greater than the thickness of the second printed circuit board 21, so that when the first connector 12 and the second connector 22 are connected, the width of the second relief portion 43E is reduced. , hold the second printed circuit board 21 movably in the width direction.

The configuration and function of the second protrusion 40G are the same as the configuration and function of the second protrusion 40E, so detailed description thereof will be omitted here.

(Action and effect of the positioning structure according to the embodiment)
In the positioning structure according to the embodiment, the first protrusion extending from the first supporting portion positioned between the first substrate and the second substrate is the first guide extending through the through hole formed in the first substrate. and an escape portion positioned between the first support portion and the first guide portion and having a width narrower than that of the first guide portion. When the first connector mounted on the first substrate and the second connector mounted on the second substrate are connected, the first support portion contacts the first substrate and the widthwise end of the first guide portion By arranging it apart from the first substrate, the first substrate is fixed so as to be movable in the width direction of the first protrusion. In the positioning structure according to the embodiment, since the positioning member movably fixes the first substrate in the width direction of the first protrusion, the arrangement position between the connecting member joined to the first substrate and the guide portion is displaced. Even if the first substrate and the connection member are joined together, there is little risk of stress being generated in the joint.

In addition, in the positioning structure according to the embodiment, the first relief portion has an inversely tapered shape in which the width becomes narrower as it approaches the first support portion. In addition, it can be easily separated without causing catching or the like.

In the positioning structure according to the embodiment, the first projection is a flat member, and the width of the first clearance is narrower than the width of the first guide. By making it movable, movement of the first substrate in the thickness direction of the first protrusion can be restricted. For example, when other parts are arranged close to each other in the thickness direction of the first projection, the first substrate can be moved in the width direction of the first projection, and the first substrate can be moved in the thickness direction of the first projection. By restricting the movement of the first substrate, it is possible to prevent the first substrate from coming into contact with other components.

In the positioning structure according to the embodiment, since the direction of the surface of one of the first projections is different from the direction of the surface of the other first projections, it can be positioned in a desired direction according to the position where the projections are arranged. It enables movement of the substrate, and restricts movement of the substrate in a direction orthogonal to the direction in which movement is permitted. For example, the first projection 40A allows the first printed circuit board 11 to move in the lateral direction and restricts the first printed circuit board 11 from moving in the longitudinal direction. On the contrary, the first protrusion 40C allows the first printed circuit board 11 to move in the lateral direction and restricts the movement of the first printed circuit board 11 in the longitudinal direction.

In the positioning structure according to the embodiment, the second protrusion extending from the second support positioned between the first substrate and the second substrate is the second guide extending through the through hole formed in the second substrate. and an escape portion positioned between the second support portion and the second guide portion and having a width narrower than that of the second guide portion. When the first connector mounted on the first substrate and the second connector mounted on the second substrate are connected, the second support portion contacts the second substrate and the widthwise end of the second guide portion By arranging it apart from the second substrate, the second substrate is fixed so as to be movable in the width direction of the second protrusion. In the positioning structure according to the embodiment, since the positioning member fixes the second substrate so as to be movable in the width direction of the second protrusion, the arrangement position between the connecting member joined to the second substrate and the guide portion is displaced. Even if the second substrate and the connection member are joined together, there is little risk of stress being generated in the joint.

(Modified Example of Positioning Structure According to Embodiment)
In the board connection structure 1, the holding member 30 is used as the positioning member, but in the positioning structure according to the embodiment, another member capable of determining the position of at least one of the first board and the second board is used as the positioning member. You may

For example, the positioning member has a substantially bar-like shape, and one end of the positioning member is positioned substantially vertically on one of the first substrate and the second substrate by screw fixing, press-fitting, soldering, or the like. . The other end of the positioning member is formed with the positioning structure (corresponding to the protrusion 40 in FIG. 1) described in the above embodiment, and the positioning hole ( 2 or the through hole 25 in FIG. 3) for positioning. In this case, the first substrate and the second substrate may be held by a separate holding member.

Further, in the above embodiments, the positioning structure for connecting printed circuit boards to each other with a predetermined distance has been described. It can be applied to structures in general that are connected to plate-shaped or other shaped members. In this case, a substantially plate-like member is provided with a through hole, and the positioning is performed by inserting the protrusion of the positioning member connected to the other member through the through hole.

Moreover, although the first protrusion 40A has a flat plate shape, the protrusion may have a cylindrical shape in the positioning structure according to the embodiment. When the projection has a cylindrical shape, the projection has a hemispherical guiding portion, a cylindrical guiding portion having the same diameter as the guiding portion, and a cylindrical shape having a smaller diameter than the guiding portion. may have an escape portion.

Further, the shape of the protrusion is not limited to a cylindrical shape, and may be a polygonal columnar shape such as a triangle, a square, or a hexagon. A polygonal prism shape with a smaller thickness or a cylindrical shape may also be used. When the shape of the projection is cylindrical or polygonal, the through holes 15 and 25 provided in the first substrate or the second substrate should be circular or polygonal, respectively, in accordance with the shape of the projection. is desirable.

Further, in the above embodiments, the positioning member is described as being a member made of metal, but a member made of resin is also applicable instead of being made of metal.

Also, the first protrusion 40A has an arc-shaped guide portion, a rectangular guide portion, and a reverse tapered escape portion, but in the positioning structure according to the embodiment, the protrusion has other shapes. good too.

7A and 7B are diagrams showing modifications of the protrusion, FIG. 7A shows a first modification, FIG. 7B shows a second modification, and FIG. 7C shows a third modification. indicates

The projecting portion 50 has an arcuate guide portion 51 , a rectangular guide portion 52 , and a rectangular relief portion 53 shorter than the guide portion 52 in the lateral direction. Since the length of the relief portion 53 in the width direction is shorter than the length of the width direction of the guide portion 52, the projection portion 50 is formed on the first printed circuit board 11 in the same manner as the first projection portion 40A. 1 through hole 15A, the first printed circuit board 11 is fixed so as to be movable in the width direction.

The projecting portion 60 has a substantially rectangular guiding portion 62 and an inversely tapered relief portion 63 . The projecting portion 60 has an inversely tapered relief portion 63 disposed between the first support portion 33A and the guide portion 62, so that the projecting portion 60 is formed on the first printed circuit board 11 in the same manner as the first projecting portion 40A. 1 through hole 15A, the first printed circuit board 11 is fixed so as to be movable in the width direction.

The projecting portion 70 has a parabolic guiding portion 71 , a square guiding portion 72 , and a reverse tapered relief portion 73 . Since the projecting portion 70 has the parabolic guide portion 71, it is possible to guide the positional relationship between the first mounting substrate 10 and the second mounting substrate 20 in the same manner as the first projecting portion 40A. In addition, the projecting portion 70 is formed on the first printed circuit board 11 in the same manner as the first projecting portion 40A because the reverse tapered escape portion 73 is disposed between the first supporting portion 33A and the guiding portion 72. When passing through the first through hole 15A, the first printed circuit board 11 is fixed so as to be movable in the width direction.

1 Board connection structure (positioning structure)
10 first mounting board 11 first printed board (first board)
12 First connector 13 First surface 14 First back surface 15A, 15C First through hole 20 Second mounting board 21 Second printed board (second board)
22 second connector 23 second surface 24 second rear surface 25E, 25G second through hole 30 holding member (positioning member)
31 base 32A-32D first arm 32E-32H second arm 33A-33D first support 33E-33H second support 40A, 40C first protrusion 40E, 40G second protrusion 41A first guide 42A First Guide Part 43A First Relief Part 41E Second Guide Part 42E Second Guide Part 43E Second Relief Part

Claims (7)

A positioning structure for positioning a first member and a second member connected to the first member by a connecting member by a holding member,
The holding member includes a positioning member connected to one of the first member and the second member and having a protrusion inserted through the through hole of the other of the first member and the second member,
a guiding portion that guides the through-hole to a position where the connecting member starts to be connected to the protruding portion;
In a state in which the connection member has completed connection, the guidance of the through hole is released, and the first member and the second member move in a direction perpendicular to the insertion direction of the protrusion into the through hole. and a recess for holding ,
The holding member includes a fastening portion that fastens at least one of the first member and the second member and the holding member, separately from the projection portion of the positioning member.
A positioning structure characterized by: The relief portion is provided at a position spaced apart by a predetermined distance from the tip of the protrusion, has a smaller thickness or width than the guide portion, and has a height corresponding to the through hole of the first member or the second member. 2. The positioning structure of claim 1, wherein the waist is higher than the thickness of the . 3. The positioning structure according to claim 2, further comprising a transition portion between said guiding portion and said constricted portion, the thickness or width of which gradually changes from said guiding portion to said constricted portion. The positioning structure according to any one of claims 1 to 3, wherein each of said protrusions is a plate-like member. 5. The positioning structure according to claim 4, comprising at least two of said protrusions, any of said protrusions having a surface orientation different from that of the other protrusions. 6. The positioning structure according to claim 5, wherein the two or more protrusions are integrally formed by bending a single plate member. The positioning structure according to any one of claims 1 to 5, wherein the positioning member further includes a support portion that supports the first member and the second member with a predetermined distance therebetween.

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