Substrate structure

Abstract

To provide a substrate structure which can be easily manufactured while accurately positioning a plurality of substrates.SOLUTION: In the substrate structure 100, the outer peripheral surface 10a of the first positioning unit 10 extends parallel to the extending direction at the insertion portions 14A, 14B, 14C inserted into the respective first positioning holes 11A, 11B, 11C. In this case, at the insertion positions of the first positioning holes 3A, 3B, and 3C of the substrates 11A, 11B, and 11C, the outer peripheral surface 10a of the first positioning portion 10a has a constant structure in the vertical direction. In this case, at the time of designing, when the reference positions of the first positioning section 10 and the first positioning holes 11A, 11B, and 11C are set, reference setting can be easily performed. In addition, when the member is processed, the processing can be easily and accurately performed. As described above, the plurality of substrates 3A, 3B, and 3C can be easily manufactured while being accurately positioned.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to substrate structures. [Background technology]

[0002] Conventionally, a substrate structure has been known in which a positioning protrusion is provided on a base plate and positioning holes of a plurality of substrates are inserted into the positioning protrusion (for example, Patent Document 1). In this substrate structure, the outer peripheral surface of the positioning protrusion has a tapered shape. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-89757 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-described substrate structure, the positioning protrusions that position each substrate are tapered. In this case, the position of the outer peripheral surface of the positioning protrusions changes in the vertical direction at the insertion points of the positioning holes of the multiple substrates. This creates problems such as complex reference setting during design and difficulty in precisely processing the components. Therefore, there has been a demand for a substrate structure that can be easily manufactured while accurately positioning multiple substrates.

[0005] An object of the present disclosure is to provide a substrate structure that can be easily manufactured while accurately positioning multiple substrates. [Means for solving the problem]

[0006] A substrate structure according to one embodiment of the present disclosure comprises a base plate, three or more substrates, and a first positioning portion extending from the base plate for positioning the substrates, each of the substrates having a first positioning hole inserted into the first positioning portion, and the outer peripheral surface of the first positioning portion extending parallel to the extension direction at the insertion point inserted into each of the first positioning holes.

[0007] A substrate structure according to one embodiment of the present disclosure includes first positioning portions extending from a base plate and positioning multiple substrates. The multiple substrates each have a first positioning hole inserted into the first positioning portion. Therefore, by inserting the first positioning holes of the multiple substrates into the first positioning portions, the multiple substrates can be positioned using the first positioning portions as a reference. Here, the outer peripheral surface of the first positioning portion extends parallel to the extension direction at the insertion location of each first positioning hole. In this case, the outer peripheral surface of the first positioning portion has a constant structure in the vertical direction at the insertion location of the first positioning hole of each substrate. In this case, when setting the reference positions of the first positioning portions and the first positioning holes during design, reference setting can be easily performed. Furthermore, when processing components, processing can be performed easily and accurately. As described above, multiple substrates can be easily manufactured while accurately positioning them.

[0008] In the first positioning portion, the respective insertion points may be configured to have the same diameter, which makes design and manufacturing easier.

[0009] In the first positioning part, each insertion point may be configured in a stepped shape so that the diameter increases from the tip side. In this case, the first positioning part can be made thicker on the base side of the base plate than on the tip side, thereby improving the strength of the first positioning part.

[0010] The tip of the first positioning portion may be tapered, in which case the tip of the first positioning portion can guide the first positioning hole of the substrate.

[0011] Each of the plurality of substrates may have a second positioning hole at a position different from the first positioning hole, and the second positioning hole may be inserted into a second positioning part that is provided to extend from the base plate at a position different from the first positioning part. In this case, by inserting the second positioning part into the second positioning hole of the substrate, the second positioning part can prevent rotation of the substrate about the first positioning part.

[0012] The second positioning holes may be configured to have the same shape and size. In this case, the second positioning holes can be formed in each substrate using the same design and processing method, making design and processing easy. [Effects of the Invention]

[0013] According to the present disclosure, it is possible to provide a substrate structure that can be easily manufactured while accurately positioning a plurality of substrates. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a side view illustrating a power supply device including a substrate structure according to an embodiment of the present disclosure. [Figure 2] FIG. 1 is a perspective view of a substrate structure according to an embodiment of the present disclosure. [Figure 3] FIG. 1 is an exploded perspective view of a substrate structure according to an embodiment of the present disclosure. [Figure 4] FIG. 2 is a plan view of a substrate structure. [Figure 5] 1 is a schematic cross-sectional view of a substrate structure. [Figure 6] FIG. 4 is an enlarged view of a positioning portion and a positioning hole. [Figure 7] FIG. 10 is a schematic cross-sectional view showing a substrate structure according to a modified example. [Figure 8] FIG. 10 is a schematic cross-sectional view showing a substrate structure according to a modified example. [Figure 9] 10(a) shows a first positioning portion of a substrate structure according to a modified example, and FIG. 10(b) shows a first positioning portion of a substrate structure according to a comparative example. DETAILED DESCRIPTION OF THE INVENTION

[0015] Referring to FIG. 1, a power supply device 1 including a substrate structure 100 according to an embodiment of the present disclosure will be described. FIG. 1 is a side view showing the power supply device 1 including the substrate structure 100 according to an embodiment of the present disclosure. As shown in FIG. 1, the power supply device 1 includes a base plate 2, three or more substrates 3, and a lid 4. The power supply device 1 is constructed by assembling the lid 4 to the base plate 2 that houses the substrates 3. A die-cast alloy or the like is used as a material for the base plate 2. The power supply device 1 is a unit that includes, for example, an AC / DC power supply, a DC / DC converter, and the like. The substrate structure 100 is provided within the power supply device 1. However, the overall shape of the power supply device 1 is not limited to that shown in FIG. 1. Furthermore, the position of the substrate structure 100 within the power supply device 1 is not particularly limited.

[0016] A substrate structure 100 according to an embodiment of the present disclosure will be described with reference to FIGS. 2 to 5. FIG. 2 is a perspective view of the substrate structure 100 according to this embodiment of the present disclosure. FIG. 3 is an exploded perspective view of the substrate structure 100 according to this embodiment of the present disclosure. FIG. 4 is a plan view of the substrate structure 100. However, FIG. 4 omits a portion of the substrate 3A. FIG. 5 is a schematic cross-sectional view of the substrate structure 100. In the illustration, the X-axis and Y-axis directions are defined relative to the direction in which the bottom surface of the base plate 2 and the substrate 3 (see FIG. 1) extend. In the illustration, the Z-axis direction is defined relative to the thickness direction of the bottom surface of the base plate 2 and the substrate 3. In this specification, the upper side is defined as the positive side of the Z-axis direction, and the lower side is defined as the negative side of the Z-axis direction. In this specification, for convenience of explanation, terms such as "upper" and "lower" may be used, but these terms do not limit the orientation of the power supply device 1 or the substrate structure 100 during use. As shown in FIGS. 2 to 4, the substrate structure 100 includes a base plate 2 and substrates 3A, 3B, and 3C.

[0017] The base plate 2 has an upper surface 2a extending parallel to the XY plane. The upper surface 2a of the base plate 2 is provided with a plurality of bosses 5 for screwing the substrates 3A and 3B, a step portion 6 for supporting and fixing the substrate 3C, a first positioning portion 10 (described later), and second positioning portions 20A, 20B, and 20C (described later). The upper surface 6a of the step portion 6 extends parallel to the XY plane at a position higher than the upper surface 2a. The substrate 3C is placed on the upper surface 6a of the step portion 6. The upper surface 6a of the step portion 6 is formed with screw holes for screwing the substrate 3C.

[0018] The substrates 3A, 3B, and 3C are plate-like members on which electronic components (not shown) are mounted. The substrate 3A is disposed at a position spaced upward from the upper surface 2a of the base plate 2. A control substrate for controlling switch elements may be mounted on the substrate 3A. A power circuit including a switch element may be mounted on the substrate 3C. An output circuit component including a smoothing circuit may be mounted on the substrate 3B.

[0019] The substrate 3A has a substantially rectangular shape and has four edge portions 3Aa, 3Ab, 3Ac, and 3Ad. The edge portions 3Aa and 3Ab extend in the Y-axis direction and face each other in the X-axis direction. The edge portion 3Aa is located on the positive side of the X-axis direction, and the edge portion 3Ab is located on the negative side of the X-axis direction. The edge portions 3Ac and 3Ad extend in the X-axis direction and face each other in the Y-axis direction. The edge portion 3Ac is located on the positive side of the Y-axis direction, and the edge portion 3Ad is located on the negative side of the Y-axis direction. The portion of the edge portion 3Ac on the negative side of the X-axis direction protrudes to the positive side of the Y-axis direction. A through hole is formed near each edge of the substrate 3A to insert a bolt to be fastened to the boss portion 5.

[0020] The substrate 3B is spaced above the upper surface 2a of the base plate 2 and is positioned lower than the substrate 3A. The substrate 3B is spaced above and below the substrates 3A and 3C. That is, the substrate structure 100 differs from a stacked structure in which the substrates 3A, 3B, and 3C are stacked without any gaps. The substrate 3B is generally positioned adjacent to the substrate 3A on the negative side of the X-axis direction. The substrate 3B has a substantially rectangular shape and has four edge portions 3Ba, 3Bb, 3Bc, and 3Bd. The edge portions 3Ba and 3Bb extend in the Y-axis direction and face each other in the X-axis direction. The edge portion 3Ba is positioned on the positive side of the X-axis direction, and the edge portion 3Bb is positioned on the negative side of the X-axis direction. The edge portions 3Bc and 3Bd extend in the X-axis direction and face each other in the Y-axis direction. The edge portion 3Bc is positioned on the positive side of the Y-axis direction, and the edge portion 3Bd is positioned on the negative side of the Y-axis direction. Edge portion 3Bc is located on the negative side of edge portion 3Ac of substrate 3A in the Y-axis direction. Edge portion 3Bd is located on the negative side of edge portion 3Ad of substrate 3A in the Y-axis direction. The portion of edge portion 3Ba on the negative side of the Y-axis direction is located on the negative side of edge portion 3Ab of substrate 3A in the X-axis direction. Meanwhile, the protruding portion 8 of edge portion 3Ba on the positive side of the Y-axis direction protrudes toward the positive side of the X-axis direction and is located on the positive side of edge portion 3Ab of substrate 3A in the X-axis direction. A through hole is formed near each edge of substrates 3A and 3B to insert a bolt to be fastened to boss portion 5.

[0021] The substrate 3C is disposed on the upper surface 6a of the step portion 6. The substrate 3C is disposed entirely below the substrate 3A. The substrate 3B has a substantially rectangular shape and has four edge portions 3Ca, 3Cb, 3Cc, and 3Cd. The edge portions 3Ca and 3Cb extend in the Y-axis direction and face each other in the X-axis direction. The edge portion 3Ca is disposed on the positive side of the X-axis direction, and the edge portion 3Cb is disposed on the negative side of the X-axis direction. The edge portions 3Cc and 3Cd extend in the X-axis direction and face each other in the Y-axis direction. The edge portion 3Cc is disposed on the positive side of the Y-axis direction, and the edge portion 3Cd is disposed on the negative side of the Y-axis direction. The edge portion 3Cc is disposed in substantially the same position as the region of the edge portion 3Ac of the substrate 3A on the positive side of the X-axis direction. The edge portion 3Cd is disposed on the positive side of the Y-axis direction relative to the edges 3Ad and 3Bd of the substrates 3A and 3B. The edge portion 3Ca is located on the negative side of the X-axis direction relative to the edge portion 3Aa of the substrate 3A. The edge portion 3Ca is located on the positive side of the X-axis direction relative to the edge portion 3Ab of the substrate 3A. The edge portion 3Cb is located on the negative side of the X-axis direction relative to the edge portions 3Ab, 3Ba of the substrates 3A, 3B. Through holes are formed near the four corners of the substrate 3C to allow insertion of bolts to be fastened to the screw holes in the stepped portions. A plurality of connection terminals 7 are provided on the substrate 3C. The upper ends of the connection terminals may extend upward from the substrate 3A, penetrating the substrate 3A (see FIG. 2). The upper ends of the pins 7a of the connection terminals 7 are lower than the first positioning portion 10.

[0022] Due to the positional relationship of the substrates 3A, 3B, and 3C as described above, the vicinity of the edge 3Ab of the substrate 3A, the vicinity of the protruding portion 8 of the edge 3Ba of the substrate 3B, and the vicinity of the edge 3Cb of the substrate 3C are configured as overlapping portions 9 that overlap each other in the vertical direction (see FIGS. 4 and 5). Note that the area of ​​the overlapping portion of the substrate 3B with the substrates 3A and 3C is smaller than the area of ​​the non-overlapping portions. The base plate 2 is provided with a first positioning portion 10 at a position corresponding to the overlapping portion 9. As shown in FIGS. 2 and 3, the first positioning portion 10 is provided so as to extend upward from the base plate 2 and is a member that positions the multiple substrates 3A, 3B, and 3C. The first positioning portion 10 is a cylindrical member that extends upward from the upper surface 6a.

[0023] As shown in FIG. 3, the base plate 2 is provided with a second positioning portion 20A at a position corresponding to the vicinity of the edge portion 3Aa of the substrate 3A. The second positioning portion 20A is a member provided so as to extend upward from the base plate 2 at a position different from the first positioning portion 10. The second positioning portion 20A is a cylindrical member extending upward from the upper surface 2a. The base plate 2 is provided with a second positioning portion 20B at a position corresponding to the vicinity of the edge portion 3Bd of the substrate 3B. The second positioning portion 20B is a member provided so as to extend from the base plate 2 at a position different from the first positioning portion 10. The second positioning portion 20B is a cylindrical member extending upward from the upper surface 2a. The base plate 2 is provided with a second positioning portion 20C at a position corresponding to the vicinity of the edge portion 3Cd of the substrate 3C (see FIG. 3). The second positioning portion 20C is a member provided so as to extend from the base plate 2 at a position different from the first positioning portion 10. The second positioning portion 20C is a cylindrical member that extends upward from the upper surface 6a.

[0024] The multiple substrates 3A, 3B, and 3C each have first positioning holes 11A, 11B, and 11C that are inserted into the first positioning portion 10. The first positioning holes 11A, 11B, and 11C are provided in the overlapping portion 9 and are arranged at the same position in the XY plane. The multiple substrates 3A, 3B, and 3C each have second positioning holes 12A, 12B, and 12C that are located at positions different from the first positioning holes 11A, 11B, and 11C. As shown in FIG. 5 , in this embodiment, the second positioning hole 12A is inserted into the second positioning portion 20A, but the second positioning holes 12B and 12C are not inserted. The second positioning hole 12B is inserted into the second positioning portion 20B, but the second positioning holes 12A and 12C are not inserted. The second positioning hole 12C is inserted into the second positioning portion 20C, but the second positioning holes 12A and 12B are not inserted.

[0025] Next, with reference to FIG. 4, the positional relationship of the positioning portions 10, 20A, 20B, and 20C will be described in more detail. However, the positions of the positioning portions 10, 20A, 20B, and 20C are not particularly limited and may be changed as appropriate. As shown in FIG. 4, the first positioning portion 10 is located along the edge portion 3Ab of the substrate 3A and is disposed near the corner between the edge portion 3Ad and the edge portion 3Ab. The first positioning portion 10 is located near the end of the protrusion portion 8 of the substrate 3B on the negative side in the Y-axis direction. The first positioning portion 10 is located along the edge portion 3Cd of the substrate 3C and is disposed near the corner with the edge portion 3Cd.

[0026] In this embodiment, the second positioning portion 20A is disposed at a position spaced apart from the first positioning portion 10 toward the positive side in the X-axis direction. The second positioning portion 20A is disposed at the end of the substrate 3A opposite the first positioning portion 10 in the X-axis direction, i.e., near the edge 3Aa. The second positioning portion 20A is disposed at the same position in the Y-axis direction as the first positioning portion 10. The second positioning portion 20C is disposed at a position spaced apart from the first positioning portion 10 toward the positive side in the X-axis direction. The second positioning portion 20C is disposed at the end of the substrate 3C opposite the first positioning portion 10 in the X-axis direction, i.e., near the edge 3Ca. The second positioning portion 20C is disposed at the same position in the Y-axis direction as the first positioning portion 10. Therefore, when a reference line SL1 is set connecting the center of the first positioning portion 10 and the center of the second positioning portion 20A in a plan view, the reference line SL1 passes through the center of the second positioning portion 20C.

[0027] In this embodiment, the second positioning portion 20B is disposed at a position spaced apart from the first positioning portion 10 on the negative side in the X-axis direction. The second positioning portion 20B is disposed at the end of the substrate 3B opposite the first positioning portion 10 in the X-axis direction, i.e., near edge 3Bb. The second positioning portion 20B is disposed at a position spaced apart from the first positioning portion 10 on the negative side in the Y-axis direction. The second positioning portion 20B is disposed at the end of the substrate 3B opposite the first positioning portion 10 in the Y-axis direction, i.e., near edge 3Bd. When a reference line SL2 is set connecting the center of the first positioning portion 10 and the center of the second positioning portion 20B in a plan view, the reference line SL2 inclines toward the negative side in the Y-axis direction as it moves toward the negative side in the X-axis direction.

[0028] Next, the shapes of the positioning portions 10, 20A, 20B, and 20C will be described in detail with reference to FIG. 5. As shown in FIG. 5, the outer peripheral surface 10a of the first positioning portion 10 has insertion portions 14A, 14B, and 14C that are inserted into the first positioning holes 11A, 11B, and 11C, respectively. The insertion portions 14A, 14B, and 14C are radially opposed to the first positioning holes 11A, 11B, and 11C when the assembly of the substrates 3A, 3B, and 3C is complete. The outer peripheral surface 10a of the first positioning portion 10 extends parallel to the extension direction at the insertion portions 14A, 14B, and 14C. Here, the extension direction is the vertical direction (Z-axis direction). The state in which the outer peripheral surface 10a extends parallel to the extension direction means that the shape and size of the outer peripheral surface in a cross section parallel to the XY plane are constant in the Z-axis direction.

[0029] Therefore, the outer diameter of the outer peripheral surface 10a of the first positioning part 10 is constant in the extension direction at the insertion point 14A, constant in the extension direction at the insertion point 14B, and constant in the extension direction at the insertion point 14C. When the first positioning part 10 is viewed from either the X or Y axis direction, the outer peripheral surface 10a is parallel to the extension direction. For example, a state in which the outer peripheral surface 10a is inclined with respect to the extension direction at the insertion points 14A, 14B, and 14C, as in the comparative example shown in FIG. 9(b), does not fall under the category of "extending parallel to the extension direction." The outer peripheral surface of the first positioning part 10 at the insertion points 14A, 14B, and 14C (and other locations) is circular in a cross section parallel to the XY plane. However, the cross-sectional shape is not particularly limited and may be elliptical, oval, polygonal, or the like.

[0030] In this embodiment, the insertion points 14A, 14B, and 14C of the first positioning part 10 are configured to have the same diameter. The first positioning part 10 extends in the extension direction from the insertion point 14C upward to the upper tip part 10b while maintaining the same diameter. This gives the first positioning part 10 a cylindrical shape. The tip part 10b of the first positioning part 10 is formed in a tapered shape. The tip part 10b is inclined so that the diameter becomes smaller as it extends upward, tapering to a point. However, the tip part 10b may also have a rounded R-shape.

[0031] The second positioning portions 20A, 20B, and 20C have a cylindrical shape, similar to the first positioning portion 10. That is, the outer peripheral surfaces 20a of the second positioning portions 20A, 20B, and 20C extend parallel to the extension direction. However, the structure of the outer peripheral surfaces 20a of the second positioning portions 20A, 20B, and 20C is not particularly limited as long as it is possible to position the substrates 3A, 3B, and 3C, and may have a stepped shape as shown in FIG. 9(a) or an inclined shape as shown in FIG. 9(b). The tip portions 20b of the second positioning portions 20A, 20B, and 20C are formed in a tapered shape.

[0032] Next, referring to FIG. 6, the size and shape of the positioning holes 11A, 11B, 11C, 12A, 12B, and 12C will be described. The diameters of the positioning portions 10, 20A, 20B, and 20C are not particularly limited, but may be 2 to 6 mm. The diameter of the first positioning portion 10 may be the same as or different from the diameter of the second positioning portions 20A, 20B, and 20C. As shown in FIG. 6, the first positioning holes 11A, 11B, and 11C have a circular shape when viewed from above and below. The diameter D1 of the first positioning holes 11A, 11B, and 11C is not particularly limited as long as it allows the first positioning portion 10 to be inserted into the positioning holes 11A, 11B, and 11C and prevents excessive rattle during positioning. For example, the diameter D1 may be in the range of 100 to 120% of the diameter of the insertion portions 14A, 14B, and 14C of the first positioning portion 10.

[0033] The second positioning holes 12A, 12B, and 12C have a shape extending along the reference lines SL1 and SL2 when viewed from the top-bottom direction. In the example shown in FIG. 6, the second positioning holes 12A, 12B, and 12C have an oval shape extending along the reference lines SL1 and SL2. However, the second positioning holes 12A, 12B, and 12C may also have an elliptical shape. The diameter D2 in the short direction of the second positioning holes 12A, 12B, and 12C may have the same proportions as the first positioning holes 11A, 11B, and 11C. The diameter D3 in the long direction of the second positioning holes 12A, 12B, and 12C is not particularly limited as long as it is within a range that allows for play during insertion. For example, the diameter D3 may be in the range of 100 to 200% of the diameter D2. The second positioning holes 12A, 12B, and 12C may be configured to have the same shape and size as each other.

[0034] The substrates 3A, 3B, and 3C positioned by the first positioning part 10 tend to move in a direction rotating around the first positioning part 10. Therefore, the second positioning holes 12A, 12B, and 12C tend to rotate in a direction perpendicular to the reference lines SL1 and SL2. In contrast, the second positioning holes 12A, 12B, and 12C have their short sides perpendicular to the reference lines SL1 and SL2. Therefore, the second positioning holes 12A, 12B, and 12C can be prevented from moving in a direction perpendicular to the reference lines SL1 and SL2. Meanwhile, the second positioning holes 12A, 12B, and 12C have their long sides parallel to the extension of the reference lines SL1 and SL2. Therefore, a sufficient margin can be secured when inserting the second positioning parts 20A, 20B, and 20C into the second positioning holes 12A, 12B, and 12C.

[0035] Next, the functions and effects of the substrate structure 100 according to this embodiment will be described.

[0036] The substrate structure 100 according to this embodiment includes first positioning portions 10 that extend from the base plate 2 and position the multiple substrates 3A, 3B, and 3C. The multiple substrates 3A, 3B, and 3C also have first positioning holes 11A, 11B, and 11C that are inserted into the first positioning portions 10, respectively. Therefore, by inserting the first positioning holes 11A, 11B, and 11C of the multiple substrates 3A, 3B, and 3C into the first positioning portions 10, the multiple substrates 3A, 3B, and 3C can be positioned using the first positioning portions 10 as a reference.

[0037] Here, a comparative example will be described with reference to Fig. 9(b). In Fig. 9(b), the first positioning portion 110 that positions each of the substrates 3A, 3B, and 3C has a tapered shape. In this case, the position of the outer peripheral surface 110a of the first positioning portion 110 changes in the vertical direction at the insertion positions 14A, 14B, and 14C of the positioning holes 11A, 11B, and 11C of the multiple substrates 3A, 3B, and 3C. In this case, there are problems in that the reference setting during design becomes complicated and it becomes difficult to precisely process the members.

[0038] In contrast, in the substrate structure 100 according to this embodiment, the outer peripheral surface 10a of the first positioning portion 10 extends parallel to the extension direction at the insertion locations 14A, 14B, and 14C where the first positioning holes 11A, 11B, and 11C are inserted. In this case, the outer peripheral surface 10a of the first positioning portion 10A has a constant structure in the vertical direction at the insertion locations of the first positioning holes 11A, 11B, and 11C of each substrate 3A, 3B, and 3C. In this case, when setting the reference positions of the first positioning portion 10 and the first positioning holes 11A, 11B, and 11C during design, reference setting can be easily performed. Furthermore, when processing the components, processing can be performed easily and accurately. As a result, multiple substrates 3A, 3B, and 3C can be accurately positioned and easily manufactured.

[0039] In the first positioning part 10, the insertion parts 14A, 14B, 14C may be configured to have the same diameter, which makes design and manufacturing easier.

[0040] The tip 10b of the first positioning portion 10 may be tapered. In this case, the tip 10b of the first positioning portion 10 can guide the first positioning holes 11A, 11B, and 11C of the substrates 3A, 3B, and 3C.

[0041] Each of the multiple substrates 3A, 3B, 3C has a second positioning hole 12A, 12B, 12C at a position different from the first positioning hole 11A, 11B, 11C, and the second positioning holes 12A, 12B, 12C may be inserted into a second positioning portion 20A, 20B, 20C that is provided to extend from the base plate 2 at a position different from the first positioning portion 10. In this case, by inserting the second positioning portions 20A, 20B, 20C into the second positioning holes 12A, 12B, 12C of the substrates 3A, 3B, 3C, the second positioning portions 20A, 20B, 20C can prevent rotation of the substrates 3A, 3B, 3C around the first positioning portion 10.

[0042] The second positioning holes 12A, 12B, and 12C may be configured to have the same shape and size. In this case, the second positioning holes 12A, 12B, and 12C can be formed in each of the substrates 3A, 3B, and 3C using the same design and processing method, which simplifies design and processing.

[0043] The present disclosure is not limited to the above-described embodiments.

[0044] In the above-described embodiment, one second positioning portion 20A, 20B, 20C is provided for each of the substrates 3A, 3B, 3C. Alternatively, the second positioning portion may be shared by multiple substrates. For example, as shown in FIG. 7, the second positioning portion 20C for the substrate 3C may be omitted. Alternatively, the substrate 3C may be extended to the second positioning portion 20A side, and a second positioning hole 12C may be formed for insertion into the second positioning portion 20A. According to the structure shown in FIG. 7, the second positioning portion 20A can be used as a positioning portion shared by the substrates 3A and 3C. Furthermore, the second positioning portion may be shared by other combinations, without being limited to FIG. 7.

[0045] The substrate may also be positioned by a plurality of second positioning portions. For example, as shown in Fig. 8, the substrate 3C may be extended to the second positioning portion 20B side, and a second positioning hole 12D may be formed to insert into the second positioning portion 20B. According to the structure shown in Fig. 8, the substrate 3C can be positioned at two locations, the second positioning portion 20C and the second positioning portion 20D.

[0046] Furthermore, the insertion points 14A, 14B, and 14C of the first positioning section 10 do not need to have the same diameter. For example, as shown in FIG. 9(a), the insertion points 14A, 14B, and 14C of the first positioning section 10 may be configured in a stepped shape so that the diameters increase sequentially from the tip side. The uppermost insertion point 14A has the smallest diameter, and the lowermost insertion point 14C has the largest diameter. In this case, the base side of the base plate 2 of the first positioning section 10 can be made thicker than the tip side, thereby improving the strength of the first positioning section 10. Note that, in the structure of FIG. 9(a), unlike FIG. 9(b), the outer peripheral surface 10a extends parallel to the extension direction at least at the insertion points 14A, 14B, and 14C. Note that, although the diameters of the portions between the insertion points 14A, 14B, and 14C are tapered, the diameters may also increase horizontally.

[0047] The size, arrangement, and quantity of each component are not limited to those in the above-described embodiment and can be changed as appropriate. For example, although three substrates are positioned in the above-described embodiment, two, four, or more substrates may be used.

[0048] [Form 1] A base plate and Three or more substrates; a first positioning portion extending from the base plate and positioning the plurality of substrates; the plurality of substrates each have a first positioning hole to be inserted into the first positioning portion; A substrate structure in which the outer peripheral surface of the first positioning portion extends parallel to the extension direction at the insertion portion inserted into each of the first positioning holes. [Form 2] The substrate structure according to aspect 1, wherein the insertion portions of the first positioning portion are configured to have the same diameter. [Form 3] The substrate structure according to aspect 1, wherein the insertion portions of the first positioning portion are configured in a stepped shape so that the diameters thereof increase in order from the tip side. [Form 4] 4. The substrate structure according to any one of aspects 1 to 3, wherein the tip of the first positioning portion is formed in a tapered shape. [Form 5] each of the plurality of substrates has a second positioning hole at a position different from the first positioning hole; The substrate structure according to any one of the first to fourth aspects, wherein the second positioning hole is inserted into a second positioning portion that is provided so as to extend from the base plate at a position different from that of the first positioning portion. [Form 6] The substrate structure according to aspect 5, wherein the second positioning holes are configured to have the same shape and size as each other. [Explanation of symbols]

[0049] 2...base plate, 3A, 3B, 3C...board, 10...first positioning portion, 10b...tip portion, 11A, 11B, 11C...first positioning hole, second positioning hole...12A, 12B, 12C, 14A, 14B, 14C...insertion point, second positioning portion...20A, 20B, 20C, 100...board structure.

Claims

1. A base plate and Three or more substrates; a first positioning portion extending from the base plate and positioning the plurality of substrates; the plurality of substrates each have a first positioning hole to be inserted into the first positioning portion; A substrate structure in which the outer peripheral surfaces of the first positioning portions extend parallel to the extension direction at insertion locations where the first positioning portions are inserted into the first positioning holes.

2. The substrate structure according to claim 1 , wherein the insertion portions of the first positioning portion are configured to have the same diameter.

3. The substrate structure according to claim 1 , wherein the insertion portions of the first positioning portion are configured in a stepped shape so that the diameters of the insertion portions increase from the tip end side.

4. The substrate structure according to claim 1 , wherein a tip of the first positioning portion is formed in a tapered shape.

5. each of the plurality of substrates has a second positioning hole at a position different from the first positioning hole; The substrate structure according to claim 1 , wherein the second positioning hole is inserted into a second positioning portion provided to extend from the base plate at a position different from the first positioning portion.

6. The substrate structure according to claim 5 , wherein the second positioning holes are configured to have the same shape and size as each other.

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