Electronic devices

Abstract

The present invention provides an electronic device. The electronic device (10) includes: a main substrate (2); one or more sub-substrates (3-6) arranged in a posture intersecting with a first main surface (2a) which is one surface of the main substrate (2); and a housing (1) having a base surface opposite to a second main surface of the main substrate (2), the second main surface being a surface opposite to the first main surface (2a). One or more through holes (201A-204A) are formed in the main substrate (2) and pass through from the first main surface (2a) to the second main surface. The sub-substrates (3-6) include a main body (301-601) arranged on the first main surface (2a) side, and a protrusion (302, 303, 402, 403, 502, 602) protruding from the base edge of the main body (301-601) and passing through the through hole to protrude toward the second main surface side. A first limiting protrusion is formed on the base surface, which limits the displacement of the protrusion (302, 303, 402, 403, 502, 602) in the thickness direction and limits the displacement of the main substrate (2) in a direction close to the base surface.

Description

Technical Field

[0001] The invention relates to an electronic device.

[0002] This application claims priority to Japanese Patent Application No. 2021-052730 filed on March 26, 2021, the contents of which are incorporated herein. Background Art

[0003] The electronic device includes, for example, a plurality of substrates and a housing for holding them. The plurality of substrates are three-dimensionally combined and mutually positioned (see, for example, Japanese Patent Publication No. 2003-273546). The plurality of substrates can be positioned using, for example, fixing members such as screws.

[0004] In the electronic device, the structure for positioning the plurality of substrates relative to each other is complicated. If the positioning structure is complicated, it is not conducive to miniaturization of the electronic device. Summary of the invention

[0005] One embodiment of the present invention provides an electronic device, comprising: a main substrate; one or more sub-substrates, arranged in a posture intersecting with a first main surface which is one surface of the main substrate; and a housing, having a base surface opposite to a second main surface of the main substrate, the second main surface being a surface opposite to the first main surface, one or more through holes penetrating from the first main surface to the second main surface are formed on the main substrate, the sub-substrate comprises a main body portion arranged on the first main surface side, and a protrusion protruding from a base edge of the main body portion through the through hole to the second main surface side, a first limiting protrusion is formed on the base surface, the first limiting protrusion limits the displacement of the protrusion in the thickness direction, and limits the displacement of the main substrate in a direction close to the base surface.

[0006] In the electronic device, preferably, a second restricting protrusion is formed on the base surface, and the second restricting protrusion restricts displacement of the protruding portion in a width direction orthogonal to the protruding direction and the thickness direction thereof.

[0007] Preferably, the box body includes a fitting receiving portion fitted with at least one end portion of the base edge of at least one of the sub-boards.

[0008] Preferably, at least a portion of the engagement receiving portion is located opposite to the first main surface, so as to restrict displacement of the main substrate in a direction away from the base surface.

[0009] The electronic device is preferably provided with a main side connector on the main substrate, and a secondary side connector connected to the main side connector is provided on at least one of the secondary substrates, and the protruding length of the protrusion is determined so that when the secondary substrate is set, the protrusion reaches the first limiting protrusion before the secondary side connector reaches the main side connector.

[0010] Preferably, the electronic device has the housing including a base portion for holding the main substrate and a cover surrounding at least a portion of the sub-substrate, wherein a guide groove for inserting a portion including an end edge of the sub-substrate is formed on an inner surface of the cover.

[0011] In the electronic device, it is preferable that a fitting protrusion is formed on the base surface, and a fitting hole that fits with the fitting protrusion is formed on the main substrate.

[0012] In the electronic device, it is preferred that a locking piece is formed on the base surface, the movement of the main substrate is restricted by the fitting receiving portion, and the main substrate is held by being locked with the locking piece.

[0013] Preferably, in the electronic device, the fitting receiving portion includes a restriction wall for restricting displacement of the sub-board in the thickness direction, and an end wall for restricting displacement of the sub-board in the width direction.

[0014] In the electronic device, preferably, the fitting receiving portion further includes a bottom wall for limiting displacement of the main body of the sub-board in a direction approaching the base surface.

[0015] According to one aspect of the present invention, it is possible to provide an electronic device having a simple substrate positioning structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a perspective view showing the internal structure of the electronic device according to the embodiment.

[0017] Figure 2 It is a perspective view showing the internal structure of the electronic device according to the embodiment.

[0018] Figure 3 It is an exploded perspective view showing an electronic device according to an embodiment.

[0019] Figure 4 It is an exploded perspective view showing a base portion and a main substrate of an electronic device according to an embodiment.

[0020] Figure 5 It is an exploded perspective view showing a base portion and a main substrate of an electronic device according to an embodiment.

[0021] Figure 6 (A) is a perspective view showing a base portion and a main substrate of an electronic device according to an embodiment, and (B) is an enlarged view of the base portion and the main substrate.

[0022] Figure 7 It is a three-dimensional view showing a partial cross-section of the base portion and the main substrate.

[0023] Figure 8It is a three-dimensional view showing a partial cross-section of the base portion and the main substrate.

[0024] Fig. 9 It is a perspective view showing the appearance of an electronic device according to an embodiment.

[0025] Fig.10 It is a perspective view showing a cover of the electronic device according to the embodiment. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described with reference to the preferred embodiments. A person skilled in the art can implement various alternatives to the embodiments using the teachings of the present invention, and the present invention is not limited to the preferred embodiments described herein.

[0027] One aspect of the present invention provides an electronic device having a simple positioning structure for a plurality of substrates.

[0028] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Figure 1 and Figure 2 It is a perspective view showing the internal structure of the electronic device 10 according to the embodiment. Figure 3 It is an exploded perspective view showing the electronic device 10 . Figure 4 and Figure 5 It is an exploded perspective view showing the base portion 11 and the main substrate 2 of the electronic device 10 . Figure 6 (A) is a perspective view showing the base portion 11 and the main substrate 2 of the electronic device 10 . Figure 6 (B) is an enlarged view of the base portion 11 and the main substrate 2. Figure 7 and Figure 8 It is a perspective view showing a partial cross-sectional state of the base portion 11 and the main substrate 2 . Fig. 9 It is a perspective view showing the appearance of the electronic device 10 . Fig.10 It is a perspective view showing the cover 12 of the electronic device 10 .

[0029] like Figure 1 and Figure 2 As shown, the electronic device 10 includes a housing 1, a main substrate 2, and a plurality of sub-substrates 3 to 6. The plurality of sub-substrates 3 to 6 are respectively a first sub-substrate 3, a second sub-substrate 4, a third sub-substrate 5, and a fourth sub-substrate 6. The main substrate 2 and the sub-substrates 3 to 6 are rigid substrates. For example, a glass epoxy substrate, a phenolic resin substrate, a silicon substrate, a ceramic substrate, etc. can be used as the main substrate 2 and the sub-substrates 3 to 6. Figure 1 and Figure 2 In the figure, the cover 12 of the housing 1 is omitted.

[0030] Hereinafter, the positional relationship of each structure is described using an XYZ orthogonal coordinate system. Figure 4). The Y direction is the short side direction of the base surface 13a. The Y direction is orthogonal to the X direction on the base surface 13a. The Z direction is a direction perpendicular to the base surface 13a. The Z direction is orthogonal to the X direction and the Y direction. The +Z direction is the front. The plane along the X direction and the Y direction is called the XY plane. The plane along the Y direction and the Z direction is called the YZ plane. The plane along the Y direction and the Z direction is called the YZ plane.

[0031] like Fig. 9 As shown, the box body 1 includes a base portion 11 and a cover 12. Fig. 9 , the positional relationship of each structure is temporarily determined. The cover 12 is located in front of the base 11. In addition, the positional relationship determined here does not limit the posture of the electronic device 10 when used.

[0032] like Figure 4 and Figure 5 As shown, the base portion 11 includes a base 13 , a pair of side walls 14 and a pair of end walls 15 .

[0033] The substrate 13 is in the shape of a rectangular plate. The substrate 13 is, for example, a rectangle. The base surface 13a of the substrate 13 is the front surface of the substrate 13. One side edge of the substrate 13 is referred to as a first side edge 13c. The other side edge of the substrate 13 is referred to as a second side edge 13d. The first side edge 13c and the second side edge 13d are opposed in the short side direction (X direction) of the substrate 13a. One end edge of the substrate 13 is referred to as a first end edge 13e. The other end edge of the substrate 13 is referred to as a second end edge 13f. The first end edge 13e and the second end edge 13f are opposed in the long side direction (Y direction) of the substrate 13a.

[0034] The side wall 14 is vertically provided on the first side edge 13c and the second side edge 13d of the base 13. The side wall 14 formed on the first side edge 13c is referred to as the first side wall 14A. The side wall 14 formed on the second side edge 13d is referred to as the second side wall 14B. The side wall 14 protrudes from the side edges 13c and 13d of the base 13 in the +Z direction. The side wall 14 is in the shape of a plate along the YZ plane.

[0035] A pair of locking pieces 16 are formed on the side wall 14 to be locked with the cover 12. The locking pieces 16 protrude from the front edge of the side wall 14 in the +Z direction. The locking pieces 16 are rectangular plates along the YZ plane. The locking pieces 16 can be elastically bent and deformed in the thickness direction. A locking claw 16a is formed on the outer surface of the locking piece 16 to be locked with the cover 12. The pair of locking pieces 16 are formed at intervals in the Y direction.

[0036] The end wall 15 is vertically provided at the first end edge 13e and the second end edge 13f of the base 13. The end wall 15 formed at the first end edge 13e is referred to as a first end wall 15A. The end wall 15 formed at the second end edge 13f is referred to as a second end wall 15B. The end wall 15 protrudes from the end edges 13e and 13f of the base 13 in the +Z direction. The end wall 15 is in the shape of a plate along the XZ plane.

[0037] A pair of locking pieces 17 are formed on the end wall 15 to be locked with the cover 12. The locking pieces 17 protrude from the front edge of the end wall 15 in the +Z direction. The locking pieces 17 are rectangular plates along the XZ plane. The locking pieces 17 can be elastically bent and deformed in the thickness direction. A locking claw 17a is formed on the outer surface of the locking piece 17 to be locked with the cover 12. The pair of locking pieces 17 are formed at intervals in the X direction.

[0038] like Figure 4 As shown, a pair of locking pieces 18 are formed on the base surface 13a of the base 13 to be locked with the main substrate 2. The locking piece 18 is formed at a position close to the first end wall 15A. The locking piece 18 protrudes from the base surface 13a in the +Z direction. The locking piece 18 is in the shape of a rectangular plate along the XZ plane. The locking piece 18 can be elastically bent and deformed in the thickness direction. A locking claw 18a is formed on the inner surface of the locking piece 18 to be locked with the first end edge 2e of the main substrate 2. The pair of locking pieces 18 are formed at intervals in the X direction.

[0039] like Figure 4 , Figure 7 and Figure 8 As shown, a pair of first limiting protrusions (first limiting portion) 21A and a second limiting protrusion (second limiting portion) 22A are formed on the base surface 13a of the base 13. The first limiting protrusion 21A is a rectangular plate along the YZ plane. The first limiting protrusion 21A is formed to protrude from the base surface 13a in the +Z direction. The two first limiting protrusions 21A are of the same shape as each other and are formed opposite to each other with a gap in the X direction. The protruding heights of the two first limiting protrusions 21A from the base surface 13a can be the same. The two first limiting protrusions 21A accommodate a part of the second protrusion 303 of the first sub-substrate 3 between them. The interval between the two first limiting protrusions 21A is determined according to the thickness of the second protrusion 303. The interval between the two first limiting protrusions 21A is substantially the same as the thickness of the second protrusion 303, or slightly larger than the thickness of the second protrusion 303. The interval between the two first limiting protrusions 21A is determined to be able to limit the displacement of the second protrusion 303 in the thickness direction.

[0040] The second limiting protrusion 22A is in the shape of a rectangular plate along the XZ plane. The second limiting protrusion 22A is formed to protrude from the base surface 13a in the +Z direction. The protrusion height of the second limiting protrusion 22A from the base surface 13a can be the same as the protrusion height of the first limiting protrusion 21A. The second limiting protrusion 22A is located at a position away from the first limiting protrusion 21A in the -Y direction. The second limiting protrusion 22A is located at a position that can abut against the side edge of the second protrusion 303 in the -Y direction. The second limiting protrusion 22A limits the displacement of the second protrusion 303 of the first sub-substrate 3 in the width direction (to be specific, the -Y direction). The "width direction" is a direction orthogonal to the protrusion direction and thickness direction of the second protrusion 303.

[0041] like Figure 7 As shown, the first limiting protrusion 21A and the second limiting protrusion 22A are formed at a position opposite to the second main surface 2b of the main substrate 2. Therefore, the top of the first limiting protrusion 21A and the top of the second limiting protrusion 22A can abut against the main substrate 2. Thus, the first limiting protrusion 21A and the second limiting protrusion 22A can limit the displacement of the main substrate 2 in the direction close to the base surface 13a.

[0042] like Figure 4 As shown, a third limiting protrusion 23 is formed on the base surface 13a of the base 13. The third limiting protrusion 23 is a rectangular plate along the YZ plane. The third limiting protrusion 23 is formed to protrude from the base surface 13a in the +Z direction. The third limiting protrusion 23 faces the surface of the +X direction side of the first protrusion 302. The third limiting protrusion 23 limits the displacement of the first protrusion 302 of the first sub-substrate 3 in the thickness direction (+X direction. The direction close to the second side wall 14B).

[0043] A fourth limiting protrusion 24 is formed on the inner surface of the first end wall 15A. The fourth limiting protrusion 24 is in the shape of a rectangular plate along the YZ plane. The fourth limiting protrusion 24 is formed to protrude from the inner surface of the first end wall 15A in the -Y direction. The fourth limiting protrusion 24 faces the surface of the -X direction side of the first protrusion 302. The fourth limiting protrusion 24 limits the displacement of the first protrusion 302 of the first sub-substrate 3 in the thickness direction (-X direction. The direction away from the second side wall 14B).

[0044] A pair of first limiting protrusions (first limiting portion) 21B and a second limiting protrusion (second limiting portion) 22B are formed on the base surface 13a of the base 13. The first limiting protrusion 21B is in the shape of a rectangular plate along the YZ plane. The first limiting protrusion 21B is formed to protrude from the base surface 13a in the +Z direction. The two first limiting protrusions 21B are of the same shape as each other and are formed opposite to each other with a gap in the X direction. The protruding heights of the two first limiting protrusions 21B from the base surface 13a can be the same. The two first limiting protrusions 21B accommodate a portion of the first protrusion 402 of the second sub-substrate 4 between them. The interval between the two first limiting protrusions 21B is determined to be able to limit the displacement of the first protrusion 402 in the thickness direction.

[0045] The second limiting protrusion 22B is in the shape of a rectangular plate along the XZ plane. The second limiting protrusion 22B is formed to protrude from the base surface 13a in the +Z direction. The protrusion height of the second limiting protrusion 22B from the base surface 13a can be the same as the protrusion height of the first limiting protrusion 21B. The second limiting protrusion 22B is located at a position away from the first limiting protrusion 21B in the -Y direction. The second limiting protrusion 22B is located at a position that can abut against the side edge of the first protrusion 402 in the -Y direction. The second limiting protrusion 22B limits the displacement of the first protrusion 402 of the second sub-substrate 4 in the width direction (specifically, the -Y direction).

[0046] The first limiting protrusion 21B and the second limiting protrusion 22B are formed at a position opposite to the second main surface 2b of the main substrate 2. Therefore, the top of the first limiting protrusion 21B and the top of the second limiting protrusion 22B can abut against the main substrate 2. Thus, the first limiting protrusion 21B and the second limiting protrusion 22B can limit the displacement of the main substrate 2 in the direction close to the base surface 13a.

[0047] like Figure 5 As shown, a pair of first limiting protrusions (first limiting portion) 21E and a second limiting protrusion (second limiting portion) 22E are formed on the base surface 13a of the base 13. The first limiting protrusion 21E is a rectangular plate along the YZ plane. The first limiting protrusion 21E is formed to protrude from the base surface 13a in the +Z direction. The two first limiting protrusions 21E are of the same shape as each other and are formed opposite to each other with a gap in the X direction. The protruding heights of the two first limiting protrusions 21E from the base surface 13a can be the same. The two first limiting protrusions 21E accommodate a portion of the second protrusion 403 of the second sub-substrate 4 between them. The interval between the two first limiting protrusions 21E is determined to be able to limit the displacement of the second protrusion 403 in the thickness direction.

[0048] The second limiting protrusion 22E is in the shape of a rectangular plate along the XZ plane. The second limiting protrusion 22E is formed to protrude from the base surface 13a in the +Z direction. The protrusion height of the second limiting protrusion 22E from the base surface 13a can be the same as the protrusion height of the first limiting protrusion 21E. The second limiting protrusion 22E is located at a position away from the first limiting protrusion 21E in the +Y direction. The second limiting protrusion 22E is located at a position that can abut against the side edge of the second protrusion 403 in the +Y direction. The second limiting protrusion 22E limits the displacement of the second protrusion 403 of the second sub-substrate 4 in the width direction (more specifically, the +Y direction).

[0049] The base surface 13 a of the base body 13 is formed with a housing recess 26 for housing the second protruding portion 403 of the second sub-board 4 .

[0050] like Figure 4 As shown, a pair of first limiting protrusions (first limiting portions) 21C are formed on the base surface 13a of the base 13. The first limiting protrusion 21C is in the shape of a rectangular plate along the YZ plane. The first limiting protrusion 21C is formed to protrude from the base surface 13a in the +Z direction. The two first limiting protrusions 21C are of the same shape as each other and are formed opposite to each other with a gap in the X direction. The protruding heights of the two first limiting protrusions 21C from the base surface 13a can be the same. The two first limiting protrusions 21C accommodate a portion of the protrusion 502 of the third sub-substrate 5 between them. The interval between the two first limiting protrusions 21C is determined to be able to limit the displacement of the protrusion 502 in the thickness direction.

[0051] The first limiting protrusion 21C is formed at a position facing the second main surface 2b of the main substrate 2. Therefore, the tip of the first limiting protrusion 21C can abut against the main substrate 2. Thus, the first limiting protrusion 21C can limit the displacement of the main substrate 2 in the direction approaching the base surface 13a.

[0052] A pair of first limiting protrusions (first limiting portions) 21D are formed on the base surface 13a of the base 13. The first limiting protrusion 21D is in the shape of a rectangular plate along the YZ plane. The first limiting protrusion 21D is formed to protrude from the base surface 13a in the +Z direction. The two first limiting protrusions 21D are of the same shape as each other and are arranged in the X direction. The two first limiting protrusions 21D are formed opposite to each other with a gap in the X direction. The protruding heights of the two first limiting protrusions 21D from the base surface 13a can be the same. The two first limiting protrusions 21D accommodate a portion of the protrusion 602 of the fourth sub-substrate 6 between them. The interval between the two first limiting protrusions 21D is determined to be able to limit the displacement of the protrusion 602 in the thickness direction.

[0053] The first limiting protrusion 21D is formed at a position facing the second main surface 2b of the main substrate 2. Therefore, the tip of the first limiting protrusion 21D can abut against the main substrate 2. Thus, the first limiting protrusion 21D can limit the displacement of the main substrate 2 in the direction approaching the base surface 13a.

[0054] The base surface 13a of the base 13 is provided with a fitting protrusion 25. The fitting protrusion 25 is, for example, cylindrical. The fitting protrusion 25 protrudes from the base surface 13a in the +Z direction. The fitting protrusion 25 restricts displacement of the main substrate 2 in the XY plane. The fitting protrusion 25 is formed at a position close to the first end wall 15A.

[0055] The first fitting receiving parts 151 and 152 are formed on the inner surface of the first end wall 15A. The first fitting receiving parts 151 and 152 are groove-shaped along the Z direction. The cross section of the first fitting receiving parts 151 and 152 along the XY plane is, for example, rectangular. The first fitting receiving parts 151 and 152 have open ends at the end surface of the first end wall 15A in the +Z direction. The first fitting receiving parts 151 and 152 are formed on the first end wall 15A at intervals in the X direction. The first fitting receiving parts 151 and 152 are examples of "fitting receiving parts".

[0056] The first end portion 501a1 (see Figure 3 ) is engaged with the first engaging receiving portion 151. The first engaging receiving portion 151 restricts the displacement of the main body 501 of the third sub-substrate 5 in the width direction (+Y direction). The first end portion 601a1 (refer to Figure 3 ) is engaged with the first engaging receiving portion 152. The first engaging receiving portion 152 restricts displacement of the main body portion 601 of the fourth sub-substrate 6 in the width direction (+Y direction).

[0057] like Figure 6 (A) and Figure 6 As shown in (B) of FIG. 1 , second fitting receiving portions 153, 154, and 155 are formed on the second end wall 15B. The second fitting receiving portions 153, 154, and 155 are examples of “fitting receiving portions”.

[0058] The second engaging receiving portion 153 includes a pair of limiting walls 153A and an end wall 153B. The end wall 153B is a rectangular plate along the XZ plane. The end wall 153B protrudes from the front edge of the second end wall 153B in the +Z direction. The end wall 153B limits the displacement of the second sub-substrate 4 in the width direction (-Y direction).

[0059] The limiting wall 153A is provided protrudingly in the +Y direction at one and the other side edges of the end wall 153B. The limiting wall 153A is in the shape of a rectangular plate along the YZ plane. The two limiting walls 153A are formed opposite to each other with a gap in the X direction. The limiting wall 153A extends in the Z direction. The limiting wall 153A extends in the -Z direction and reaches the bottom of the accommodating recess 26. That is, the limiting wall 153A is formed along the Z direction from the top of the end wall 153B to the bottom of the accommodating recess 26. The second interlocking receiving portion 153 accommodates a portion of the second sub-substrate 4 between a pair of limiting walls 153A. The interval between the two limiting walls 153A is determined to be able to limit the displacement of the second sub-substrate 4 in the thickness direction.

[0060] The second engaging receiving portion 154 includes a pair of limiting walls 154A, a bottom wall 154B and an end wall 154C. The end wall 154C is a rectangular plate along the XZ plane. The end wall 154C protrudes from the front edge of the second end wall 15B in the +Z direction. The end wall 154C limits the displacement of the main body 501 of the third sub-substrate 5 in the width direction (-Y direction).

[0061] The limiting wall 154A is provided at one and the other side edges of the end wall 154C so as to protrude in the +Y direction. The limiting wall 154A is in the shape of a rectangular plate along the YZ plane. The two limiting walls 154A are formed opposite to each other with a gap in the X direction. The limiting wall 154A extends in the Z direction. The second fitting receiving portion 154 receives the second end portion 501a2 (see Figure 3 The interval between the two limiting walls 154A is determined to limit the displacement of the main body 501 in the thickness direction. The second fitting receiving portion 154 positions the second end portion 501a2 of the third sub-substrate 5.

[0062] The bottom wall 154B is provided at the rear end of the limiting wall 154A. The bottom wall 154B is in a rectangular plate shape along the XY plane. The bottom wall 154B is formed from one limiting wall 154A to another limiting wall 154A. The bottom wall 154B limits the displacement of the main body 501 of the third sub-substrate 5 in the -Z direction (direction close to the base surface 13a).

[0063] The second engaging receiving portion 155 includes a pair of limiting walls 155A, a bottom wall 155B and an end wall 155C. The end wall 155C is a rectangular plate along the XZ plane. The end wall 155C protrudes from the front edge of the second end wall 15B in the +Z direction. The end wall 155C limits the displacement of the main body 601 of the fourth sub-substrate 6 in the width direction (-Y direction).

[0064] The limiting wall 155A is provided at one and the other side edges of the end wall 155C so as to protrude in the +Y direction. The limiting wall 155A is in the shape of a rectangular plate along the YZ plane. The two limiting walls 155A are formed opposite to each other with a gap in the X direction. The limiting wall 155A extends in the Z direction. The second fitting receiving portion 155 receives the second end portion 601a2 (refer to Figure 3 The interval between the two limiting walls 155A is determined to limit the displacement of the main body 601 in the thickness direction. The second fitting receiving portion 155 positions the second end portion 601a2 of the fourth sub-substrate 6.

[0065] The bottom wall 155B is provided at the rear end of the limiting wall 155A. The bottom wall 155B is a rectangular plate along the XY plane. The bottom wall 155B is formed from one limiting wall 155A to another limiting wall 155A. The bottom wall 155B limits the displacement of the main body 601 of the fourth sub-substrate 6 in the -Z direction (direction close to the base surface 13a).

[0066] The inner surface of the second end wall 15B is formed with a locking claw 19 that is locked with the second end edge 2f of the main substrate 2. The locking claw 19 protrudes from the inner surface of the second end wall 15B in the +Y direction. The locking claw 19 is a rectangular plate-shaped along the XY plane.

[0067] like Figure 4 and Figure 5 As shown, the main substrate 2 is generally formed into a rectangular shape (e.g., a rectangle). One surface of the main substrate 2 is referred to as a first main surface 2a. The first main surface 2a is a front surface. The other surface of the main substrate 2 is referred to as a second main surface 2b. The second main surface 2b is a surface opposite to the first main surface 2a. One end edge of the main substrate 2 is referred to as a first end edge 2e. The other end edge of the main substrate 2 is referred to as a second end edge 2f.

[0068] A portion of the portion including the second end edge 2f of the main substrate 2 is located behind (on the -Y direction side) the bottom walls 154B and 155B of the second fitting receiving portions 154 and 155. Therefore, at least a portion of the bottom walls 154B and 155B of the second fitting receiving portions 154 and 155 is located at a position opposite to the first main surface 2a of the main substrate 2. The bottom walls 154B and 155B restrict the displacement of the main substrate 2 in the +Z direction (the direction in which the main substrate 2 is away from the base surface 13a).

[0069] The main substrate 2 is held on the base portion 11 by the second fitting receiving portions 154 , 155 and the locking claws 19 restricting movement of the portion including the second end edge 2 f and by the locking piece 18 locking the portion including the first end edge 2 e .

[0070] The area of ​​the first main surface 2 a that faces the bottom walls 154B and 155B is an area close to the main connector 210 .

[0071] The main connector 210 is mounted on the main substrate 2 by soldering with a through-hole reflow process. The area opposite to the bottom wall 154B, 155B can be an area used as a solder paste portion during soldering. After the solder is removed by the through-hole reflow process, this area is used for positioning by the second fitting receiving portion 154, 155. Therefore, the first main surface 2a can be effectively used. This is conducive to ensuring the mounting area in the first main surface 2a.

[0072] The main substrate 2 is provided with first through holes 201A to 204A and a second through hole 202B. The first through holes 201A to 204A and the second through hole 202B penetrate the main substrate 2 from the first main surface 2a to the second main surface 2b. The second through hole 202B is formed at a position away from the first through hole 202A in the -Y direction. The first through holes 201A to 204A and the second through hole 202B are examples of "through holes".

[0073] The main substrate 2 is provided with a fitting hole 207 that fits with the fitting protrusion 25. For example, the fitting hole 207 is circular when viewed from the thickness direction of the main substrate 2. The fitting hole 207 is formed to penetrate the main substrate 2 from the first main surface 2a to the second main surface 2b. By fitting the fitting protrusion 25 with the fitting hole 207, the displacement of the main substrate 2 along the direction of the XY plane is restricted. Therefore, the positioning accuracy of the main substrate 2 relative to the base portion 11 can be improved.

[0074] The first main surface 2a of the main substrate 2 is provided with first to fourth main connectors 203 to 206 and a main connector 210. The main connectors 203 to 206 are, for example, floating connectors and are used for connection with the sub-substrates 3 to 6. The main connector 210 is used for connection with other devices.

[0075] like Figure 3 As shown, the first sub-substrate 3 includes a substrate body 304 and a first sub-side connector 305. The substrate body 304 includes a main body 301, a first protrusion 302 and a second protrusion 303. The main body 301 is formed in a rectangular shape. The first protrusion 302 and the second protrusion 303 are formed to protrude backward (-Z direction) from the base edge 301a of the main body 301. The base edge 301a is equivalent to one of the four sides of the main body 301.

[0076] The first protrusion 302 and the second protrusion 303 are formed in a rectangular shape. The first protrusion 302 and the second protrusion 303 are formed at a distance in the width direction (Y direction) of the main body 301. The second protrusion 303 is located closer to the first protrusion 302 in the -Y direction. An interface connector 306 is provided on one surface of the main body 301. The first protrusion 302 and the second protrusion 303 are examples of "protrusions".

[0077] like Figure 1 and Figure 2 As shown, at least a portion of the main body 301 is disposed on the first main surface 2a side of the main substrate 2. "Disposed on the first main surface side" means being located on the +Z direction side relative to the first main surface 2a. When viewed from the Z direction, at least a portion of the main body 301 is located in an area overlapping with the first main surface 2a.

[0078] like Figure 4 and Figure 5 As shown, the first protrusion 302 (see Figure 3 ) protrudes toward the second main surface 2b side through between the first end edge 2e of the main substrate 2 and the first end wall 15A. The top end of the first protrusion 302 reaches a position close to the base surface 13a. "Protruding toward the second main surface side" means protruding in a direction close to the base surface 13a relative to the second main surface 2b. The top end of the first protrusion 302 reaches the space on the second main surface 2b side. The "space on the second main surface 2b side" is, for example, a space divided by the base surface 13a of the substrate 13, the inner surface of the side wall 14, the inner surface of the end wall 15, and the second main surface 2b.

[0079] The first protrusion 302 (see Figure 3 ) is limited in displacement in the +X direction by the third limiting protrusion 23. The first protrusion 302 is limited in displacement in the -X direction by the fourth limiting protrusion 24. Therefore, the first protrusion 302 is limited in displacement in the thickness direction. The first protrusion 302 is limited in displacement in the width direction (more specifically, in the +Y direction) by the first end wall 15A.

[0080] The second protrusion 303 (see Figure 3 ) passes through the first through hole 201A of the main substrate 2 and protrudes toward the second main surface 2b. The top end of the second protrusion 303 reaches the space on the second main surface 2b side. A portion of the second protrusion 303 is inserted between a pair of first limiting protrusions 21A. The displacement of the second protrusion 303 in the thickness direction is limited by the first limiting protrusion 21A. The displacement of the second protrusion 303 in the width direction (to be specific, the -Y direction) is limited by the second limiting protrusion 22A.

[0081] The first secondary-side connector 305 is, for example, a floating connector and is connected to the first primary-side connector 203 provided on the main substrate 2 .

[0082] like Figure 3As shown, the second sub-substrate 4 includes a substrate body 404 and a second sub-side connector 405. The substrate body 404 includes a main body 401, a first protrusion 402 and a second protrusion 403. The main body 401 is formed in a rectangular shape. The first protrusion 402 and the second protrusion 403 are formed to protrude backward (-Z direction) from the base edge 401a of the main body 401. The first protrusion 402 and the second protrusion 403 are formed in a rectangular shape. The first protrusion 402 and the second protrusion 403 are formed at intervals in the width direction (Y direction) of the main body 401. The second protrusion 403 is located close to the -Y direction relative to the first protrusion 402. An interface connector 406 is provided on one surface of the main body 401. The first protrusion 402 and the second protrusion 403 are examples of "protrusions".

[0083] like Figure 1 and Figure 2 As shown, at least a portion of the main body portion 401 is provided on the first main surface 2 a side of the main substrate 2 .

[0084] like Figure 4 and Figure 5 As shown, the first protrusion 402 (see Figure 3 ) passes through the first through hole 202A of the main substrate 2 and protrudes toward the second main surface 2b. The top end of the first protrusion 402 reaches the space on the second main surface 2b side. A portion of the first protrusion 402 is inserted between a pair of first limiting protrusions 21B. Therefore, the first protrusion 402 is limited in displacement in the thickness direction by the first limiting protrusion 21B. The first protrusion 402 is limited in displacement in the width direction (to be specific, the -Y direction) by the second limiting protrusion 22B.

[0085] like Figure 5 As shown, the second protrusion 403 (refer to Figure 3 ) passes through the second through hole 202B of the main substrate 2 and protrudes toward the second main surface 2b. The top end of the second protrusion 403 reaches the space on the second main surface 2b side. A portion of the second protrusion 403 is inserted into the accommodating recess 26. A portion of the second protrusion 403 is located between a pair of first limiting protrusions 21E. Therefore, the displacement in the thickness direction is limited by the first limiting protrusion 21E. The displacement of the second protrusion 403 in the width direction (more specifically, the +Y direction) is limited by the second limiting protrusion 22E.

[0086] like Figure 6As shown in (B), the portion of the second sub-substrate 4 including the end edge in the -Y direction is inserted between a pair of limiting walls 153A of the second fitting receiving portion 153. When the second sub-substrate 4 is assembled to the base portion 11 and the main substrate 2, the second fitting receiving portion 153 can guide the second sub-substrate 4. The limiting wall 153A limits the displacement of the second sub-substrate 4 in the thickness direction. The end wall 153B limits the displacement of the second sub-substrate 4 in the width direction (specifically, the -Y direction).

[0087] The second secondary-side connector 405 is, for example, a floating connector and is connected to the second primary-side connector 204 provided on the main substrate 2 .

[0088] like Figure 3 As shown, the third sub-substrate 5 includes a substrate body 504 and a third sub-side connector 505. The substrate body 504 includes a main body 501 and a protrusion 502. The main body 501 is formed into a rectangle. The rear end edge of the main body 501 is called the base edge 501a. The front end edge of the main body 501 (the edge opposite to the base edge 501a) is called the top edge 501b. The protrusion 502 is formed to protrude backward (-Z direction) from the base edge 501a of the main body 501. The protrusion 502 is formed into a rectangle. An interface connector 506 is provided on one surface of the main body 501.

[0089] like Figure 1 and Figure 2 As shown, at least a portion of the main body portion 501 is provided on the first main surface 2 a side of the main substrate 2 .

[0090] like Figure 4 and Figure 5 As shown, the protrusion 502 (see Figure 3 ) passes through the first through hole 203A of the main substrate 2 and protrudes toward the second main surface 2b. The top end of the protrusion 502 reaches the space on the second main surface 2b side. A portion of the protrusion 502 is inserted between a pair of first limiting protrusions 21C. The displacement of the protrusion 502 in the thickness direction is limited by the first limiting protrusion 21C.

[0091] like Figure 4 As shown, the first end portion 501a1 (see Figure 3 ) is inserted into the first fitting receiving portion 151. The main body 501 is restricted from displacement in the thickness direction and the width direction (+Y direction) by the first fitting receiving portion 151.

[0092] like Figure 6 As shown in (B), the second end portion 501a2 (see Figure 3) is inserted between a pair of limiting walls 154A of the second fitting receiving portion 154. The main body 501 is limited in displacement in the thickness direction by the limiting walls 154A. The main body 501 is limited in displacement in the -Z direction (direction approaching the base surface 13a) by the bottom wall 154B.

[0093] The third secondary connector 505 is, for example, a floating connector and is connected to the third primary connector 205 provided on the main substrate 2 .

[0094] like Figure 3 As shown, the fourth sub-substrate 6 includes a substrate body 604 and a fourth sub-side connector 605. The substrate body 604 includes a main body 601 and a protrusion 602. The main body 601 is formed into a rectangle. The rear end edge of the main body 601 is called the base edge 601a. ​​The front end edge of the main body 601 (the edge opposite to the base edge 601a) is called the top edge 601b. The protrusion 602 is formed to protrude backward (-Z direction) from the base edge 601a of the main body 601. The protrusion 602 is formed into a rectangle. An interface connector 606 is provided on one surface of the main body 601.

[0095] like Figure 1 and Figure 2 As shown, at least a portion of the main body portion 601 is provided on the first main surface 2 a side of the main substrate 2 .

[0096] like Figure 4 and Figure 5 As shown, the protrusion 602 (see Figure 3 ) passes through the first through hole 204A of the main substrate 2 and protrudes toward the second main surface 2b. The top of the protrusion 602 reaches the space on the second main surface 2b side. A portion of the protrusion 602 is inserted between a pair of first limiting protrusions 21D. The displacement of the protrusion 602 in the thickness direction is limited by the first limiting protrusion 21D.

[0097] like Figure 4 As shown, the first end portion 601a1 (see Figure 3 ) is inserted into the first fitting receiving portion 152. The main body 601 is restricted from displacement in the thickness direction and the width direction (+Y direction) by the first fitting receiving portion 152.

[0098] like Figure 5 As shown, the second end portion 601a2 (see Figure 3 ) is inserted between a pair of limiting walls 155A of the second fitting receiving portion 155. The main body 601 is limited in displacement in the thickness direction by the limiting walls 155A. The main body 601 is limited in displacement in the -Z direction (direction approaching the base surface 13a) by the bottom wall 155B.

[0099] The fourth sub-side connector 605 is, for example, a floating connector and is connected to the fourth main-side connector 206 provided on the main substrate 2 .

[0100] The sub-substrates 3 to 6 are provided in a posture intersecting with the first main surface 2 a of the main substrate 2 (more specifically, in a posture perpendicular to the first main surface 2 a ).

[0101] like Fig. 9 As shown, the cover 12 includes a front plate 33, a pair of side plates 34, and a pair of end plates 35. The cover 12 is assembled to the base portion 11. The cover 12 surrounds at least a portion of the sub-boards 3 to 6.

[0102] The front plate 33 is a plate-shaped plate along the XY plane. Figure 1 and Figure 2 )The opening portion 51 through which the wiring connected thereto passes.

[0103] The side plate 34 extends rearward from one and the other side edges of the front plate 33. The side plate 34 is along the YZ plane. A locking receiving portion 53 is formed on the side plate 34. The locking receiving portion 53 is a hole formed through the side plate 34. The side plate 34 is connected to the locking claw 16a of the locking piece 16 (see Figure 4 ) is locked with the locking receiving portion 53 and combined with the side wall 14.

[0104] The end plate 35 extends rearward from one and the other end edges of the front plate 33. The end plate 35 is along the XZ plane. A latching receiving portion (not shown) is formed on the end plate 35. The latching receiving portion is a recessed portion formed on the inner surface of the end plate 35. The end plate 35 is secured to the rear surface of the front plate 33 by the latching claw 17a (see FIG. Figure 4 ) is locked with a locking receiving portion (not shown) and connected to the end wall 15. The two end plates 35 are respectively referred to as a first end plate 35A and a second end plate 35B.

[0105] The front plate 33 is provided with a recessed structure 36. The recessed structure 36 includes a bottom plate 37, a side plate 38, and an end plate 39. The bottom plate 37 is located at a position rearward (-Z direction) relative to the front plate 33. The bottom plate 37 is rectangular and parallel to the front plate 33. The bottom plate 37 is provided with a connector for connecting to the interface connector 406 (see FIG. Figure 1 and Figure 2 )The opening portion 52 through which the wiring connected thereto passes.

[0106] The side plate portion 38 extends forward from the side edge of the bottom plate portion 37. The end plate portion 39 extends forward from the end edge of the bottom plate portion 37.

[0107] like Fig.10As shown, first guide grooves 41A, 41C, 41D are formed on the inner surface of the first end plate 35A. The first guide grooves 41A, 41C, 41D are formed along the Z direction. The first guide grooves 41A, 41C, 41D are formed from the rear end 35A1 (the end in the -Z direction) of the first end plate 35A to the front end 35A2 (the end in the +Z direction). The first guide grooves 41A, 41C, 41D are formed at intervals in the X direction. The widths of the first guide grooves 41A, 41C, 41D are determined to be able to limit the displacement of the first sub-substrate 3, the third sub-substrate 5, and the fourth sub-substrate 6 in the thickness direction, respectively.

[0108] The first guide grooves 41A1, 41C1, 41D are provided with expansion parts 41A1, 41C1, 41D1 at the positions close to the rear ends. The expansion parts 41A1, 41C1, 41D1 are formed so that the groove width increases as the groove width increases toward the rear. One side edge of the expansion part 41A1, 41C1, 41D1 is linearly inclined so as to shift toward the +X direction as the groove width increases toward the rear. The other side edge of the expansion part 41A1, 41C1, 41D1 is linearly inclined so as to shift toward the -X direction as the groove width increases toward the rear.

[0109] Second guide grooves 42B, 42C, 42D are formed on the inner surface of the second end plate 35B. The second guide grooves 42B, 42C, 42D are formed along the Z direction. The second guide grooves 42B, 42C, 42D are formed from the rear end 35B1 (the end in the -Z direction) of the second end plate 35B to the front end 35B2 (the end in the +Z direction). The second guide grooves 42B, 42C, 42D are formed at intervals in the X direction. The widths of the second guide grooves 42B, 42C, 42D are determined to be able to limit the displacement of the second sub-substrate 4, the third sub-substrate 5, and the fourth sub-substrate 6 in the thickness direction, respectively.

[0110] The second guide grooves 42B, 42C, 42D are formed with expansion parts 42B1, 42C1, 42D1 whose groove width increases as they go backward. One side edge of the expansion part 42B1, 42C1, 42D1 is linearly inclined so as to shift toward the +X direction as it goes backward. The other side edge of the expansion part 42B1, 42C1, 42D1 is linearly inclined so as to shift toward the -X direction as it goes backward.

[0111] A third guide groove 43A is formed on the inner surface of the end plate portion 39. The third guide groove 43A is formed along the Z direction. The third guide groove 43A is formed from the rear end (the end in the -Z direction) to the front end (the end in the +Z direction) of the end plate portion 39. The width of the third guide groove 43A is determined to be able to limit the displacement of the first sub-substrate 3 in the thickness direction.

[0112] The third guide groove 43A includes a rear end portion and an expansion portion 43A1 whose groove width increases as it goes backward. One side edge of the expansion portion 43A1 is linearly inclined so as to shift toward the +X direction as it goes backward. The other side edge of the expansion portion 43A1 is linearly inclined so as to shift toward the -X direction as it goes backward.

[0113] A third fitting receiving portion 156 is formed on the inner surface of the bottom plate portion 37. The third fitting receiving portion 156 includes a pair of limiting walls 156A and an end wall 156B. The end wall 156B is a rectangular plate along the XZ plane. The end wall 156B protrudes from the inner surface (rear surface) of the bottom plate portion 37 in the -Z direction. The end wall 156B limits the displacement of the second sub-substrate 4 in the width direction.

[0114] The limiting wall 156A is provided protrudingly in the -Y direction at one and the other side edges of the end wall 156B. The limiting wall 156A is in the shape of a rectangular plate along the YZ plane. The two limiting walls 156A are formed opposite to each other with a gap in the X direction. The limiting wall 156A extends in the Z direction. The third interlocking receiving portion 156 receives a portion of the second sub-substrate 4 (more specifically, a portion including an end edge of the main body 401) between a pair of limiting walls 156A. The interval between the two limiting walls 156A is determined to be able to limit the displacement of the second sub-substrate 4 in the thickness direction.

[0115] The inner surface of the portion including the rear end of the restriction wall 156A is formed with an expansion portion 156A1 having a shape in which the groove width (the interval between the restriction walls 156A) becomes wider as it goes backward. One side surface of the expansion portion 156A1 is linearly inclined so as to shift toward the +X direction as it goes backward. The other side surface of the expansion portion 156A1 is linearly inclined so as to shift toward the -X direction as it goes backward.

[0116] The portion of the first sub-substrate 3 including one end edge of the main body 301 is inserted into the first guide groove 41A. The portion of the first sub-substrate 3 including the other end edge of the main body 301 is inserted into the third guide groove 43A. Therefore, the posture of the first sub-substrate 3 can be stably maintained.

[0117] When the cover 12 is assembled to the base 11, the first sub-substrate 3 is inserted into the cover 12 from the rear end of the end plate 35 to the front. The first guide groove 41A and the third guide groove 43A are provided with expansion parts 41A1 and 43A1, so that even if the first sub-substrate 3 is misaligned, the positional deviation of the first sub-substrate 3 can be corrected by the inclination of the side edges of the expansion parts 41A1 and 43A1. Thus, the end edge of the first sub-substrate 3 can be easily guided into the guide grooves 41A and 43A.

[0118] The portion of the second sub-board 4 including one end edge of the main body 401 is inserted between the two limiting walls 156A of the third fitting receiving portion 156. The portion of the second sub-board 4 including the other end edge of the main body 401 is inserted into the second guide groove 42B. Therefore, the posture of the second sub-board 4 can be stably maintained.

[0119] When the cover 12 is assembled to the base 11, the second sub-board 4 is inserted into the cover 12 from the rear end of the end plate 35 to the front. Since the second guide groove 42B has the expansion portion 42B1, the edge of the second sub-board 4 can be easily guided into the guide groove 42B.

[0120] The portion of the third sub-substrate 5 including one end edge of the main body 501 is inserted into the first guide groove 41C. The portion of the third sub-substrate 5 including the other end edge of the main body 501 is inserted into the second guide groove 42C. Therefore, the posture of the third sub-substrate 5 can be stably maintained.

[0121] When the cover 12 is assembled to the base 11, the third sub-substrate 5 is inserted into the cover 12 from the rear end of the end plate 35 to the front. The first guide groove 41C and the second guide groove 42C are provided with expansion portions 41C1 and 42C1, so that the end edge of the third sub-substrate 5 can be easily guided into the guide grooves 41C and 42C.

[0122] The portion of the fourth sub-substrate 6 including one end edge of the main body 601 is inserted into the first guide groove 41D. The portion of the fourth sub-substrate 6 including the other end edge of the main body 601 is inserted into the second guide groove 42D. Therefore, the posture of the fourth sub-substrate 6 can be stably maintained.

[0123] When the cover 12 is assembled to the base 11, the fourth sub-substrate 6 is inserted into the cover 12 from the rear end of the end plate 35 to the front. The first guide groove 41D and the second guide groove 42D are provided with expansion portions 41D1 and 42D1, so that the end edge of the fourth sub-substrate 6 can be easily guided into the guide grooves 41D and 42D.

[0124] A pair of fifth limiting protrusions 46C1 and 46C2 are formed on the inner surface 33a (rear surface) of the front plate 33. The fifth limiting protrusions 46C1 and 46C2 are formed to protrude from the inner surface 33a of the front plate 33 in the -Z direction. The two fifth limiting protrusions 46C1 and 46C2 are formed to face each other with a gap in the X direction. The two fifth limiting protrusions 46C1 and 46C2 receive the top edge 501b of the third sub-substrate 5 between them (see Figure 3 ). The fifth limiting protrusions 46C1 and 46C2 can limit the displacement of the top edge 501b of the third sub-substrate 5 in the thickness direction. Thus, the third sub-substrate 5 can be stably held.

[0125] A pair of fifth limiting protrusions 46D1 and 46D2 are formed on the inner surface 33a (rear surface) of the front plate 33. The fifth limiting protrusions 46D1 and 46D2 are formed to protrude from the inner surface 33a of the front plate 33 in the -Z direction. The two fifth limiting protrusions 46D1 and 46D2 are formed to face each other with a gap in the X direction. The two fifth limiting protrusions 46D1 and 46D2 receive the top edge 601b of the fourth sub-substrate 6 between them (see Figure 3 ). The fifth limiting protrusions 46D1 and 46D2 can limit the displacement of the top edge 601b of the fourth sub-substrate 6 in the thickness direction. Thus, the fourth sub-substrate 6 can be stably held.

[0126] [Effects of the electronic device according to the embodiment]

[0127] In the electronic device 10, the first limiting protrusions 21A, 21B, 21C, 21D, and 21E are formed on the base surface 13a. The first limiting protrusions 21A, 21B, 21C, 21D, and 21E have both the function of limiting the displacement of the sub-substrates 3 to 6 in the thickness direction and the function of limiting the displacement of the main substrate 2 in the thickness direction. Therefore, the structure for positioning the main substrate 2 and the sub-substrates 3 to 6 relative to the base 13 can be simplified. This is conducive to miniaturization of the electronic device 10.

[0128] Since the electronic device 10 has a simple structure, the number of parts is small, so the assembly man-hours are small and the manufacturing is easy.

[0129] The electronic device 10 can stably position the sub-boards 3 to 6 by the first restricting protrusions 21A, 21B, 21C, and 21D, and thus can reduce the load applied to the main-side connectors 203 to 206 and the sub-side connectors 305 to 605 .

[0130] Second limiting projections 22A, 22B, and 22E are formed on the base 13. The second limiting projections 22A, 22B, and 22E can limit displacement of the first sub-substrate 3 and the second sub-substrate 4 in the width direction, thereby improving positioning accuracy of the sub-substrates 3 and 4.

[0131] The second end wall 15B is formed with second fitting receiving portions 154 and 155. The second fitting receiving portion 154 receives the second end portion 501a2 of the base edge 501a of the main body portion 501 of the third sub-substrate 5. The second fitting receiving portion 155 receives the second end portion 601a2 of the base edge 601a of the main body portion 601 of the fourth sub-substrate 6. The second fitting receiving portions 154 and 155 can position the ends of the base edges 501a and 601a of the main bodies 501 and 601 of the sub-substrates 5 and 6, thereby improving the positioning accuracy of the sub-substrates 5 and 6.

[0132] The bottom walls 154B and 155B of the second fitting receiving portions 154 and 155 are located opposite to the first main surface 2a of the main substrate 2 to restrict displacement of the main substrate 2 in the +Z direction (the direction in which the main substrate 2 moves away from the base 13). Therefore, the positioning accuracy of the main substrate 2 can be improved.

[0133] Preferably, the protruding lengths of the protruding portions 302, 303, 402, 403, 502, 602 of the sub-substrates 3 to 6 are determined so that the protruding portions 302, 303, 402, 403, 502, 602 reach the first limiting protrusions 21A, 21B, 21C, 21D, 21E before the sub-side connectors 305 to 605 reach the main-side connectors 203 to 206. Thus, when the sub-substrates 3 to 6 are arranged, the sub-side connectors 305 to 605 can be mated with the connectors 203 to 206 of the main substrate 2 after the sub-substrates 3 to 6 are positioned to a certain extent by the first limiting protrusions 21A, 21B, 21C, 21D, 21E. Thus, the connectors of the sub-substrates 3 to 6 can be reliably mated with the connectors of the main substrate 2.

[0134] The electronic device 10 can be applied to, for example, a signal converter, a remote I / O, a regulator, a PLC (Programmable Logic Controller), and the like.

[0135] The present invention is not limited to the above-mentioned embodiment, and various changes can be made within the scope of the purpose of the present invention. For example, in the above-mentioned embodiment, the displacement of the protrusion of the sub-substrates 3 to 6 in the thickness direction is limited by the first limiting protrusions (first limiting parts) 21A, 21B, 21C, 21D, and 21E, but the shape of the first limiting part is not limited to a protrusion, but may also be a concave part. In the above-mentioned embodiment, the displacement of the protrusion of the sub-substrates 3 to 6 in the width direction is limited by the second limiting protrusions (second limiting parts) 22A, 22B, and 22E, but the shape of the second limiting part is not limited to a protrusion, but may also be a concave part.

[0136] In the electronic device 10 of the embodiment, two first limiting protrusions 21A, 21B, 21C, 21D, and 21E are respectively provided, but the number of the first limiting protrusions is not particularly limited. For example, in the electronic device 10, the number of the first limiting protrusions 21A that limit the displacement of the second protrusion 303 of the first sub-substrate 3 is two, but the number of the first limiting protrusions 21A may be one or more (any number greater than two).

[0137] In the electronic device 10, one second limiting protrusion 22A, one second limiting protrusion 22B, and one second limiting protrusion 22E are provided, but the number of the second limiting protrusions is not particularly limited. For example, in the electronic device 10, the number of the second limiting protrusion 22A that limits the displacement of the second protrusion 303 of the first sub-substrate 3 is one, but the number of the second limiting protrusion 22A may be one or more (any number greater than two).

[0138] In the embodiment, the sub-substrates 3 to 6 are arranged in a posture perpendicular to the first main surface 2a of the main substrate 2, but the sub-substrates can be arranged in a posture intersecting the first main surface of the main substrate. The posture of the sub-substrates is preferably a posture perpendicular to the first main surface, but can also be a posture inclined at an angle greater than 0 and less than 90 degrees relative to the first main surface.

[0139] In this specification, the terms "front, back, up, down, right, left, vertical, horizontal, longitudinal, transverse, row and column" indicating directions refer to these directions in the device of the present invention. Therefore, these terms in the specification of the present invention should be interpreted relatively in the device of the present invention.

[0140] The preferred embodiments of the present invention have been described above, but the present invention is not limited to these embodiments. Addition, omission, substitution and other changes of the structure can be made within the scope of the purpose of the present invention. The present invention is not limited by the above description but only by the attached claims.

Claims

1. An electronic device, characterized in that include: main substrate; One or more sub-substrates are arranged in a posture intersecting with the first main surface which is one surface of the main substrate; as well as The housing has a base surface opposite to a second main surface of the main substrate, wherein the second main surface is a surface opposite to the first main surface, One or more through holes are formed in the main substrate, penetrating from the first main surface to the second main surface. The sub-substrate includes a main body portion provided on the first main surface side, and a protrusion portion protruding from a base edge of the main body portion through the through hole toward the second main surface side. A first limiting protrusion is formed on the base surface, and the first limiting protrusion limits displacement of the protrusion in the thickness direction and limits displacement of the main substrate in a direction approaching the base surface.

2. The electronic device according to claim 1, characterized in that: A second restricting protrusion is formed on the base surface, and the second restricting protrusion restricts displacement of the protruding portion in a width direction perpendicular to the protruding direction and the thickness direction thereof.

3. The electronic device according to claim 2, characterized in that: The box body includes a fitting receiving portion fitted with at least one end portion of the base edge of at least one of the sub-boards.

4. The electronic device according to claim 3, characterized in that: At least a portion of the engagement receiving portion is located opposite to the first main surface, and restricts displacement of the main substrate in a direction away from the base surface.

5. The electronic device according to any one of claims 1 to 4, characterized in that: A main side connector is provided on the main substrate, A secondary side connector connected to the primary side connector is provided on at least one of the secondary substrates. The protruding length of the protruding portion is determined so that the protruding portion is restricted by the first restricting protrusion before the sub-side connector is connected to the main-side connector when the sub-board is installed.

6. The electronic device according to any one of claims 1 to 4, characterized in that: The housing includes a base portion for holding the main substrate and a cover surrounding at least a portion of the sub-substrate. A guide groove into which a portion including an end edge of the sub-substrate is inserted is formed on the inner surface of the cover.

7. The electronic device according to any one of claims 1 to 4, characterized in that: A fitting protrusion is formed on the base surface, The main substrate is formed with a fitting hole into which the fitting protrusion fits.

8. The electronic device according to claim 3, characterized in that: A locking piece is formed on the base surface, The movement of the main substrate is restricted by the fitting receiving portion, and the main substrate is held by being locked with the locking piece.

9. The electronic device according to claim 3, characterized in that: The fitting receiving portion includes a restriction wall that restricts displacement of the sub-board in the thickness direction, and an end wall that restricts displacement of the sub-board in the width direction.

10. The electronic device according to claim 9, characterized in that: The fitting receiving portion further includes a bottom wall for limiting displacement of the main body of the sub-substrate in a direction approaching the base surface.

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