JP6879045B2 - Power converter - Google Patents

Description

The present invention relates to a power conversion device, and more particularly to a power conversion device including a plurality of substrates including a connector portion.

Conventionally, a power conversion device including a plurality of substrates including a connector portion is known (see, for example, Patent Document 1).

Patent Document 1 discloses an inverter device including a main circuit unit composed of a power semiconductor element and a control circuit unit for controlling the main circuit unit. In this inverter device, the control circuit unit includes a power supply printed circuit board and a control printed circuit board laminated on the power supply printed circuit board. The power supply printed circuit board and the control printed circuit board are connected to each other via a pin connector. Specifically, the power printed circuit board and the control print are formed by inserting the pins (or holes) provided on the lower surface of the control printed circuit board into the holes (or pins) provided on the upper surface of the power printed circuit board. It is connected to the board.

Japanese Unexamined Patent Publication No. 2006-333591

However, in the inverter device described in Patent Document 1, the pin (or hole) provided on the lower surface of the control printed circuit board is inserted into the hole (or pin) provided on the upper surface of the power supply printed circuit board. The operator stacks the control printed circuit board on the power supply printed circuit board in a state where the pins and holes cannot be directly seen from above. Therefore, the control printed circuit board may be laminated on the power supply printed circuit board in a state where the pins are not normally inserted into the holes. In this case, in the test after assembling the inverter device, the connection failure of the pin connector (the connection failure between the pin and the hole) is recognized for the first time. That is, the inverter device described in Patent Document 1 has a problem that the presence or absence of a poor connection of the pin connector (connector portion) cannot be recognized at the time of assembly.

The present invention has been made to solve the above problems, and one object of the present invention is to provide a power conversion device capable of recognizing a connection failure of a connector portion at the time of assembly. is there.

In order to achieve the above object, the power conversion device according to one aspect of the present invention is provided with a main circuit portion and is provided so as to be laminated on the first substrate including the first connector portion. A second substrate including a second connector portion connected to the first connector portion of the first substrate, and a support member provided between the first substrate and the second substrate to support the second substrate are provided and supported. The members include a support member side hole into which the first connector is inserted, a first convex portion protruding from the outside of the edge of the support member side hole toward the second substrate, a support member side hole, and a first member. look including a stepped portion provided between the convex portion, the second connector portion includes a second connecting terminal, the first connector portion includes a first connection terminal second connecting terminal is inserted, the When the two connection terminals are not normally inserted into the first connection terminal, the second connection terminal that is not normally inserted is configured to come into contact with the step portion .

In the power conversion device according to one aspect of the present invention, as described above, a step portion is provided between the support member side hole portion and the first convex portion. This step portion regulates that when the second connector portion is not normally connected to the first connector portion, the second connector portion abuts and the second substrate moves to the first substrate side. As a result, when the second connector portion is not normally connected to the first connector portion, the movement of the second substrate to the first substrate side is restricted by the step portion (that is, the second connector in contact with the step portion). Since the portion acts as a tension rod), it is possible to prevent the second substrate from being laminated (assembled) on the first substrate in a state where the second connector portion is not normally connected to the first connector portion. As a result, the operator can recognize the poor connection between the second connector portion and the first connector portion at the time of assembly. As a result, unlike the case where a poor connection between the second connector portion and the first connector portion is recognized after assembly, it is not necessary to perform the work of reassembling so that the connection is normally performed after assembly, which is caused by the reassembly. It is possible to suppress the work loss to be performed.

In the power conversion device according to the above one aspect, preferably, the second connection terminal includes a plurality of pins arranged along a predetermined direction, and the first connection terminal is a plurality of connectors into which the plurality of pins are inserted. When inserting a plurality of pins including an insertion hole into a plurality of connector insertion holes, if at least one of the pins is not properly inserted into the connector insertion hole, the pin is not inserted normally. The pin is configured to come into contact with the stepped portion. Here, the pin is relatively easy to bend. Therefore, by configuring the pins that are bent and not inserted normally to come into contact with the stepped portion, it is possible to prevent the second substrate from being laminated on the first substrate in a state where the pins are not normally connected to the connector insertion holes. It is particularly effective in terms of points.

In this case, preferably, the second connector portion further includes a base portion on which a plurality of pins are arranged, and the plurality of pins are in a direction orthogonal to the direction in which the plurality of pins are arranged in the base portion and are first. The connector portion is unevenly arranged on one side in the direction along the surface on the second substrate side, and the step portion is in the direction orthogonal to the direction in which the plurality of pins are arranged in the hole portion on the side of the support member. 1 The connector portion is arranged on one side in the direction along the surface of the second substrate side. Here, the pins that are biased to the base portion tend to bend to the biased side. Therefore, the stepped portion is arranged on one side of the direction in which the pins are biased, orthogonal to the direction in which the plurality of pins are arranged, and along the surface of the first connector portion on the second substrate side. Therefore, a pin that is bent and is not inserted normally can be easily brought into contact with the step portion.

In a power conversion device in which the second connector portion includes a plurality of pins, the step portion is preferably provided along the arrangement direction of the plurality of pins. With this configuration, if any one (or more) of the plurality of pins is bent and is not normally inserted into the connector insertion hole, one (or more) of the bent pins can be inserted into a plurality of bent pins. It can be brought into contact with a step portion provided along the arrangement direction of the pins.

In this case, preferably, the step portion has a wall shape provided along the arrangement direction of the plurality of pins. With this configuration, unlike the case where a plurality of stepped portions are discretely provided at predetermined intervals along the arrangement direction of the plurality of pins, the bent pins do not abut on the stepped portions and are adjacent to each other. It is possible to suppress the insertion between the stepped portions. That is, since the stepped portion has a wall shape, the bent pin can be reliably brought into contact with the stepped portion.

In the power conversion device according to the above one aspect, the height position of the step portion with respect to the first substrate is preferably lower than the height position of the upper end of the first connector portion with respect to the first substrate. Here, if the height position of the stepped portion with respect to the first substrate is substantially the same as the height position of the upper end of the first connector portion with respect to the first substrate (substantially flush with each other), the connector portion is not normally connected to the first connector portion. The second connector portion (such as in a bent state) may be inserted into the gap between the first connector portion and the step portion. That is, the second connector portion that is not normally connected to the first connector portion may not come into contact with the step portion. Therefore, in the present invention, as described above, the height position of the stepped portion with respect to the first substrate is set lower than the height position of the upper end of the first connector portion with respect to the first substrate. With this configuration, the second connector portion that is not normally connected to the first connector portion (such as in a bent state) can be appropriately brought into contact with the step portion.

In the power conversion device according to the above one aspect, preferably, the support member is provided so as to face the first convex portion, and guides the second connector portion when connecting the second connector portion to the first connector portion. The height of protrusion from the surface of the support member of the first convex portion including the second convex portion is substantially equal to the height of protrusion of the support member of the second convex portion from the surface. With this configuration, the height of protrusion of the support member of the first convex portion from the surface is substantially equal to the height of protrusion of the support member of the second convex portion from the surface, so that the second connector portion is the first connector. When normally connected to the portions, the first convex portion and the second convex portion can support the second substrate. As a result, rattling of the second substrate can be suppressed.

In the power conversion device according to the above one aspect, preferably, the first convex portion is inserted into the second substrate in a state where the second connector portion of the second substrate is connected to the first connector portion of the first substrate. In addition, a second substrate side hole portion for exposing the first convex portion is provided. With this configuration, when the second connector portion is normally connected to the first connector portion, the first convex portion is inserted into the second substrate side hole portion and exposed. As a result, the operator can visually confirm that the second connector portion is normally connected to the first connector portion and that the first convex portion is exposed from the second substrate side hole portion. Can be recognized.

In this case, preferably, the support member is provided so as to face the first convex portion, and further includes a second convex portion that guides the second connector portion when the second connector portion is connected to the first connector portion. The protrusion height of the first convex portion from the surface of the support member is higher than the protrusion height of the second convex portion from the surface of the support member. With this configuration, when the second connector portion is normally connected to the first connector portion, the protrusion height is higher than that of the second convex portion in a state where the second substrate is supported by the second convex portion. The first convex portion can be inserted into the hole on the side of the second substrate and exposed.

According to the present invention, as described above, it is possible to recognize a poor connection of the connector portion at the time of assembly.

It is an exploded perspective view of the power conversion apparatus according to 1st Embodiment. It is a top view of the power conversion apparatus according to 1st Embodiment. It is sectional drawing along the line 200-200 of FIG. It is a perspective view of the convex part provided in the support member of the power conversion apparatus according to 1st Embodiment. It is a top view (schematic view) of the convex portion provided in the support member of the power conversion apparatus according to 1st Embodiment. It is a figure which shows the back surface side (the side where the connector part is provided) of the substrate of the power conversion apparatus by 1st Embodiment. It is a perspective view of the connector part (base part, pin) of the power conversion apparatus according to 1st Embodiment. It is a perspective view which shows the state before inserting a pin into a hole part of a connector part. It is a side view (schematic view) which shows the state which a pin is bent. It is a side view (schematic view) which shows the state which a bent pin comes into contact with a step portion. It is sectional drawing of the power conversion apparatus by 2nd Embodiment. It is a side view (schematic view) which shows the state which a bent pin comes into contact with a step portion.

Hereinafter, embodiments embodying the present invention will be described with reference to the drawings.

The configuration of the power conversion device 1 according to the first embodiment will be described with reference to FIGS. 1 to 10. The power conversion device 1 is, for example, an inverter device.

As shown in FIGS. 1 and 2, the power conversion device 1 includes a substrate 10 on which the main circuit unit 11 is provided. The main circuit unit 11 is composed of a power semiconductor element or the like. Further, the main circuit unit 11 is placed above the cooling fins (not shown), and the heat generated from the main circuit unit 11 is dissipated by the cooling fins. The substrate 10 is an example of the "first substrate" in the claims.

Further, the substrate 10 is provided with a connector portion 12. Two connector portions 12 (connector portions 12a and 12b) are provided. The connector portions 12a and 12b are arranged side by side along the Y direction. The configurations of the connector portions 12a and 12b are substantially the same as each other. The connector portions 12, 12a and 12b are examples of the "first connector portion" in the claims.

Further, as shown in FIG. 3, the connector portion 12 is arranged on the surface of the substrate 10 (Z1 direction side). Further, the connector portion 12 has a substantially prismatic shape (specifically, a prismatic shape bent in a U shape, FIGS. 4 and 5). Further, the connector portion 12 is arranged along the X direction.

Further, as shown in FIGS. 4 and 5, the connector portion 12 includes a plurality of hole portions 13 into which a plurality of pins 23 of the connector portion 21, which will be described later, are inserted. The plurality of hole portions 13 are arranged along the X direction. Further, each hole portion 13 has a hole shape extending along the Z direction. Further, the plurality of hole portions 13 are arranged in a direction orthogonal to the X direction in which the plurality of pins 23 described later are arranged, and one side in the Y direction (Y1 direction side) along the surface 12c of the connector portion 12 on the substrate 20 side. It is unevenly arranged in. The hole portion 13 is an example of the “connector insertion hole portion” in the claims.

Further, as shown in FIG. 1, the power conversion device 1 includes a substrate 20 provided so as to be laminated on the substrate 10. The substrate 20 is arranged on the Z1 direction side of the substrate 10. Further, the substrate 20 is provided with a gate drive circuit for driving the power semiconductor element constituting the main circuit unit 11. The substrate 20 is an example of a "second substrate" within the scope of the claims.

Further, as shown in FIG. 6, the substrate 20 includes a connector portion 21 connected to the connector portion 12 of the substrate 10. Two connector portions 21 (connector portions 21a and 21b) are provided so as to correspond to the two connector portions 12a and 12b. The connector portions 21a and 21b are arranged side by side along the Y direction. The configurations of the connector portions 21a and 21b are substantially the same as each other. Further, the connector portion 21 is arranged on the back surface (Z2 direction side) of the substrate 20. The connector portions 21, 21a and 21b are examples of the "second connector portion" in the claims.

Further, as shown in FIG. 7, the connector portion 21 includes a base portion 22 and a plurality of pins 23 arranged on the base portion 22. The base portion 22 has a substantially rectangular parallelepiped shape. The base portion 22 is arranged along the X direction. Further, the plurality of pins 23 are arranged along the X direction at the base portion 22. Further, the plurality of pins 23 are one side (Y1 direction side) of the direction orthogonal to the X direction in which the plurality of pins 23 are arranged and along the surface 12c (see FIG. 4) of the connector portion 12 on the substrate 20 side. ) Is biased.

Further, as shown in FIG. 3, the power conversion device 1 is provided between the substrate 10 and the substrate 20, and includes a support member 30 that supports the substrate 20. The support member 30 is made of, for example, resin or the like. The support member 30 includes a hole portion 31 into which the connector portion 12 is inserted. Two holes 31 (holes 31a and 31b) are provided so as to correspond to the two connector portions 12a and 12b. The hole portion 31 has a shape corresponding to the shape of the connector portion 12 in a plan view. That is, the hole portion 31 has a substantially U-shape (see FIG. 5) in a plan view. The holes 31, 31a and 31b are examples of "support member side holes" in the claims.

Further, as shown in FIG. 3, the support member 30 has a flat plate shape, and the hole portion 31 is formed by the circumferential wall portion 32 protruding from the back surface of the support member 30.

Further, as shown in FIG. 3, the support member 30 includes a convex portion 34 protruding from the outside of the edge portion 33 of the hole portion 31 toward the substrate 20 side. Here, in the first embodiment, the support member 30 includes a stepped portion 35 provided between the hole portion 31 and the convex portion 34. The step portion 35 is configured to restrict the substrate 20 from moving to the substrate 10 side when the connector portion 21 abuts (see FIG. 10) when the connector portion 21 is not normally connected to the connector portion 12. There is. Specifically, when inserting the plurality of pins 23 into the plurality of holes 13, if at least one of the plurality of pins 23 is not normally inserted into the holes 13, the pins are not inserted normally. 23 is configured to come into contact with the stepped portion 35. The convex portion 34 is an example of the "first convex portion" in the claims.

Further, in the first embodiment, the step portion 35 is in the direction orthogonal to the X direction in which the plurality of pins 23 are arranged in the hole portion 31 and in the Y direction along the surface 12c of the connector portion 12 on the substrate 20 side. It is arranged on one side (Y1 direction side). That is, the step portion 35 is arranged on the base portion 22 on the same direction side as the Y1 direction side in which the plurality of pins 23 are unevenly arranged.

Further, in the first embodiment, as shown in FIG. 5, the step portion 35 is provided along the arrangement direction (X direction) of the plurality of pins 23. Further, the step portion 35 has a wall shape provided along the arrangement direction of the plurality of pins 23. Specifically, in a plan view, the convex portion 34 is provided substantially linearly along the substantially linear side surface of the hole portion 31 on the Y1 direction side. Further, the convex portion 34 has a wall shape provided along the X direction. The step portion 35 is provided between the side surface of the hole portion 31 on the Y1 direction side and the convex portion 34 provided along the X direction.

Further, in the first embodiment, as shown in FIG. 3, the height position h1 of the step portion 35 with respect to the substrate 10 is the height position h2 of the end portion (surface 12c) of the connector portion 12 on the substrate 20 side with respect to the substrate 10. Lower than. For example, the height position h1 of the step portion 35 is located closer to the substrate 20 than the central portion of the connector portion 12 in the Z direction.

Further, as shown in FIG. 5, the width W1 of the step portion 35 in the Y direction is larger than the width W2 of the hole portion 13 in the Y direction (width W6 of the pin 23 in the Y direction, see FIG. 3). Further, as shown in FIG. 3, the boundary portion between the step portion 35 and the convex portion 34 has an R shape. Further, as shown in FIG. 5, the end portions of the step portion 35 on the X1 direction side and the X2 direction side are connected to the convex portion 36 described later. Further, the width W3 of the step portion 35 in the X direction is larger than the width W4 of the connector portion 12 in the X direction.

Further, as shown in FIG. 3, the support member 30 includes a convex portion 36 provided so as to face the convex portion 34. The convex portion 36 has a function of guiding the connector portion 21 when the connector portion 21 is connected to the connector portion 12. Specifically, the convex portion 36 is provided so as to project from the edge portion 33 of the hole portion 31 toward the substrate 20. That is, the inner side surface of the hole portion 31 and the surface of the convex portion 36 on the Y1 direction side are substantially flush with each other. The convex portion 36 is an example of the “second convex portion” in the claims.

Further, as shown in FIG. 4, the convex portion 36 has a wall shape along the outer circumference of the substantially U-shaped hole portion 31. The convex portion 34 and the convex portion 36 are continuously formed (connected). As a result, the convex portion 34 and the convex portion 36 are configured to surround the hole portion 31. Further, the convex portion 34 and the convex portion 36 are integrally formed on the support member 30.

Then, in the first embodiment, as shown in FIG. 3, the protrusion height h3 of the convex portion 34 from the surface of the support member 30 is substantially equal to the protrusion height h4 of the convex portion 36 from the surface of the support member 30. .. That is, the upper surface (the surface on the Z1 direction side) of the convex portion 34 that is continuously formed (connected) and the upper surface (the surface on the Z1 direction side) of the convex portion 36 are formed substantially flat. Further, the portion of the convex portion 36 on the root side (the portion on the Z2 direction side) has an R shape. The convex portion 34 and the convex portion 36 are separated from the substrate 20 in a state where the substrate 20 is laminated on the substrate 10.

Further, a gap C is provided between the connector portion 12 and the hole portion 31. For example, the width W5 of the gap C in the Y direction is larger than the width W6 of the pin 23 in the Y direction. By providing the gap C, it is possible to prevent the connector portion 12 from being inserted into the hole portion 31 due to the dimensional error of the hole portion 31 (the dimensional error of the connector portion 12).

Further, as shown in FIG. 1, a hole 37 into which an element (transformer or the like) provided on the substrate 10 is inserted is provided in the vicinity of the central portion of the support member 30. Further, as shown in FIG. 2, a hole portion 24 into which an element (transformer or the like) provided on the substrate 10 is inserted is provided in the vicinity of the central portion of the substrate 20.

Next, a case where the pin 23 of the connector portion 21 is not normally connected to the hole portion 13 of the connector portion 12 will be described with reference to FIGS. 8 to 10.

First, as shown in FIG. 8, the substrate 20 is moved to the substrate 10 side in order to connect the connector portion 21 to the connector portion 12. Here, as shown in FIG. 9, when the pin 23 is not normally connected to the hole portion 13, for example, the pin 23 may come into contact with the surface 12c of the connector portion 12 and the pin 23 may be bent in the Y1 direction side. .. Since the pins 23 are biased toward the Y1 direction in the base portion 22, the pins 23 are easily bent toward the Y1 direction. Then, as shown in FIG. 10, by further moving the substrate 20 toward the substrate 10, the bent pin 23 comes into direct contact with the step portion 35. Alternatively, the bent pin 23 abuts on the convex portion 34 and then abuts on the stepped portion 35. As a result, the movement of the substrate 20 to the substrate 10 side is restricted. As a result, the operator can recognize that the pin 23 is not normally connected to the hole 13.

(Effect of the first embodiment)
In the first embodiment, the following effects can be obtained.

In the first embodiment, as described above, the stepped portion 35 is provided between the hole portion 31 and the convex portion 34. The step portion 35 regulates that the connector portion 21 comes into contact with the connector portion 21 and the substrate 20 moves to the substrate 10 side when the connector portion 21 is not normally connected to the connector portion 12. As a result, when the connector portion 21 is not normally connected to the connector portion 12, the movement of the substrate 20 to the substrate 10 side is restricted by the step portion 35 (that is, the connector portion 21 in contact with the step portion 35 is stretched). Since it acts as a rod), it is possible to prevent the substrate 20 from being laminated (assembled) on the substrate 10 in a state where the connector portion 21 is not normally connected to the connector portion 12. As a result, the operator can recognize the poor connection between the connector portion 21 and the connector portion 12 at the time of assembly. As a result, unlike the case where a poor connection between the connector portion 21 and the connector portion 12 is recognized after assembly, it is not necessary to perform the work of reassembling so that the connection is normally performed after assembly. Can be suppressed.

Further, in the first embodiment, as described above, when the plurality of pins 23 are each inserted into the plurality of holes 13, at least one of the plurality of pins 23 is not normally inserted into the holes 13. In this case, the pin 23, which is not normally inserted, is configured to come into contact with the stepped portion 35. Here, the pin 23 is relatively easy to bend. Therefore, configuring the pin 23, which is bent and not normally inserted, to abut on the step portion 35 prevents the substrate 20 from being laminated on the substrate 10 in a state where the pin 23 is not normally connected to the hole portion 13. It is especially effective in terms of points.

Further, in the first embodiment, as described above, the plurality of pins 23 are arranged on the surface 12c of the base portion 22 on the substrate 20 side in the direction orthogonal to the direction in which the plurality of pins 23 are arranged. The stepped portion 35 is unevenly arranged on one side in the along direction, and the stepped portion 35 is located on the surface 12c of the hole portion 31 in the direction orthogonal to the direction in which the plurality of pins 23 are arranged and on the substrate 20 side of the connector portion 12. It is located on one side of the direction along the line. Here, the pin 23 that is biasedly arranged on the base portion 22 is likely to bend to the biased side. Therefore, the step portion 35 is arranged on one side of the direction in which the pins 23 are biased, in the direction orthogonal to the direction in which the plurality of pins 23 are arranged, and along the surface 12c of the connector portion 12 on the substrate 20 side. By doing so, the pin 23 that is bent and is not inserted normally can be easily brought into contact with the step portion 35.

Further, in the first embodiment, as described above, the step portion 35 is provided so as to follow the arrangement direction of the plurality of pins 23. As a result, when any one (or a plurality) of the plurality of pins 23 is bent and is not normally inserted into the hole portion 13, the bent one (or a plurality) of the pins 23 can be inserted into the plurality of pins 23. It can be brought into contact with the stepped portion 35 provided along the arrangement direction.

Further, in the first embodiment, as described above, the step portion 35 has a wall shape provided along the arrangement direction of the plurality of pins 23. As a result, unlike the case where the plurality of stepped portions 35 are discretely provided at predetermined intervals along the arrangement direction of the plurality of pins 23, the bent pins 23 do not abut on the stepped portions 35 and are adjacent to each other. It is possible to suppress the insertion between the stepped portions 35. That is, since the step portion 35 has a wall shape, the bent pin 23 can be reliably brought into contact with the step portion 35.

Further, in the first embodiment, as described above, the height position h1 of the step portion 35 with respect to the substrate 10 is lower than the height position h2 of the upper end of the connector portion 12 with respect to the substrate 10. Here, when the height position h1 of the step portion 35 with respect to the substrate 10 is substantially the same as the height position h2 of the upper end of the connector portion 12 with respect to the substrate 10, the connector portion 12 is not normally connected (substantially flush with each other). The connector portion 21 (such as in a bent state) may be inserted into the gap C between the connector portion 12 and the step portion 35. That is, the connector portion 21 which is not normally connected to the connector portion 12 may not come into contact with the step portion 35. Therefore, in the first embodiment, as described above, the height position h1 of the step portion 35 with respect to the substrate 10 is set lower than the height position h2 of the upper end of the connector portion 12 with respect to the substrate 10. As a result, the connector portion 21 which is not normally connected to the connector portion 12 (in a bent state or the like) can be appropriately brought into contact with the step portion 35.

Further, in the first embodiment, as described above, the protruding height h3 of the convex portion 34 from the surface of the support member 30 is substantially equal to the protruding height h4 of the convex portion 36 from the surface of the support member 30. As a result, the protruding height h3 of the convex portion 34 from the surface of the support member 30 is substantially equal to the protruding height h4 of the convex portion 36 from the surface of the support member 30, so that the connector portion 21 normally connects to the connector portion 12. When connected, the convex portion 34 and the convex portion 36 can support the substrate 20. As a result, rattling of the substrate 20 can be suppressed.

[Second Embodiment]
Next, the power conversion device 100 according to the second embodiment will be described with reference to FIGS. 11 and 12. In the power conversion device 100, a hole 125 is provided in the substrate 120.

As shown in FIG. 11, the support member 130 of the power conversion device 100 is provided with a convex portion 134 protruding from the outside of the edge portion 133 of the hole portion 131 toward the substrate 120. Here, in the second embodiment, the protruding height h11 of the convex portion 134 from the surface of the support member 130 is higher than the protruding height h12 of the convex portion 136 from the surface of the support member 130. Specifically, the protruding height h11 is higher than the protruding height h12 by the thickness t (or the thickness smaller than the thickness t) of the substrate 120. The hole 131 is an example of the "support member side hole" in the claims. Further, the convex portion 134 is an example of the "first convex portion" in the claims. Further, the convex portion 136 is an example of the "second convex portion" in the claims.

Further, in the second embodiment, the substrate 120 is provided with a hole portion 125. The hole portion 125 is configured such that the convex portion 134 is inserted and the convex portion 134 is exposed in a state where the connector portion 21 of the substrate 120 is connected to the connector portion 12 of the substrate 10. Two holes 125 are provided so as to correspond to the two connector portions 12a and 12b. Further, the hole portion 125 has a shape (substantially rectangular shape) corresponding to the convex portion 34 in a plan view. The hole portion 125 is an example of the “second substrate side hole portion” in the claims.

Next, a case where the pin 23 of the connector portion 21 is not normally connected to the hole portion 13 of the connector portion 12 (when it is normally connected) will be described with reference to FIG. 12 (FIG. 11).

First, the substrate 120 is moved to the substrate 10 side in order to connect the connector portion 21 to the connector portion 12. Here, if the pin 23 is not normally connected to the hole portion 13, the pin 23 bends in the Y1 direction. Then, by further moving the substrate 120 toward the substrate 10, the bent pin 23 comes into contact with the stepped portion 135. As a result, the substrate 120 is restricted from moving toward the substrate 10, so that the convex portion 134 is not inserted into the hole portion 125. As a result, the operator can recognize that the pin 23 is not normally connected to the hole 13. Further, the operator can visually recognize the state of the pin 23 from the hole 125 (whether or not the pin 23 is normally connected to the hole 13).

On the other hand, as shown in FIG. 11, when the connector portion 21 of the substrate 120 is normally connected to the connector portion 12 of the substrate 10, the convex portion 134 is inserted into the hole portion 125 and the convex portion 134 is inserted into the hole portion 125. Exposed from.

(Effect of the second embodiment)
In the second embodiment, the following effects can be obtained.

In the second embodiment, as described above, in the state where the connector portion 21 of the substrate 120 is connected to the connector portion 12 of the substrate 10, the convex portion 134 is inserted into the substrate 120 and the convex portion 134 is exposed. A hole 125 is provided. As a result, when the connector portion 21 is normally connected to the connector portion 12, the convex portion 134 is inserted into the hole portion 125 and exposed. As a result, the operator can visually recognize that the connector portion 21 is normally connected to the connector portion 12 by visually observing that the convex portion 134 is exposed from the hole portion 125.

Further, in the second embodiment, as described above, the protrusion height h11 of the convex portion 134 from the surface of the support member 130 is higher than the protrusion height h12 of the convex portion 136 from the surface of the support member 130. As a result, when the connector portion 21 is normally connected to the connector portion 12, the convex portion 134 having a protrusion height h11 higher than that of the convex portion 136 is inserted into the hole portion 125 in a state where the substrate 120 is supported by the convex portion 136. It can be inserted and exposed.

[Modification example]
It should be noted that the embodiments disclosed this time are exemplary in all respects and are not considered to be restrictive. The scope of the present invention is shown by the scope of claims rather than the description of the above-described embodiment, and further includes all modifications (modifications) within the meaning and scope equivalent to the scope of claims.

For example, in the first and second embodiments described above, an example in which the pin 23 is provided on the connector portion 21 has been shown, but the present invention is not limited to this. For example, the connector portion 21 may be provided with a connection terminal having a shape other than the pin 23.

Further, in the first and second embodiments, the example in which the pins 23 are unevenly arranged on the Y1 direction side in the base portion 22 has been shown, but the present invention is not limited to this. For example, the pin 23 may be arranged at the substantially center of the base portion 22 (approximately the center in the Y direction). Further, the pins 23 may be arranged unevenly on the Y2 direction side in the base portion 22. In this case, the step portion 35 (step portion 135) is arranged on the Y2 direction side of the hole portion 31 (hole portion 131).

Further, in the first and second embodiments, an example in which a plurality of pins 23 are provided has been shown, but the present invention is not limited to this. For example, the number of pins 23 may be one.

Further, in the first and second embodiments, an example in which the step portion 35 (step portion 135) has a wall shape provided along the arrangement direction of the plurality of pins 23 has been shown. Not limited to. For example, the plurality of stepped portions may be arranged discretely (in a stepping stone shape) along the arrangement direction of the plurality of pins 23.

Further, in the first and second embodiments, an example in which the convex portion 34 (convex portion 134) and the convex portion 36 (convex portion 136) are continuously formed has been shown. Not limited. For example, the convex portion 34 (convex portion 134) and the convex portion 36 (convex portion 136) may be formed discretely.

Further, in the first and second embodiments, an example in which two connector portions 12 (connector portions 21) are provided has been shown, but the present invention is not limited to this. The number of connector portions 12 (connector portions 21) may be one or three or more.

1,100 Power converter 10 Board (1st board)
11 Main circuit section 12, 12a, 12b Connector section (first connector section)
12c surface 13 holes (connector insertion holes)
20 board (second board)
21, 21a, 21b connector part (second connector part)
22 Base part 23 Pin 30 Support member 31, 31a, 31b, 131 Hole part (Support member side hole part)
33, 133 Edges 34, 134 Convex (first convex)
35, 135 Stepped part 36, 136 Convex part (second convex part)
125 holes (2nd board side holes)

Claims (9)

The main circuit section is provided, and the first board including the first connector section and
A second substrate that is provided so as to be laminated on the first substrate and includes a second connector portion that is connected to the first connector portion of the first substrate.
A support member provided between the first substrate and the second substrate and supporting the second substrate is provided.
The support member includes a support member side hole portion into which the first connector portion is inserted, a first convex portion protruding from the outside of the edge portion of the support member side hole portion toward the second substrate side, and the support member. and a stepped portion provided between the side bore portion the first convex portions seen including,
The second connector portion includes a second connection terminal.
The first connector portion includes a first connection terminal into which the second connection terminal is inserted.
A power conversion device configured such that when the second connection terminal is not normally inserted into the first connection terminal, the second connection terminal that is not normally inserted comes into contact with the step portion. The second connection terminal includes a plurality of pins arranged along a predetermined direction.
The first connection terminal includes a plurality of connector insertion holes into which the plurality of pins are inserted.
When a plurality of the pins are inserted into the plurality of connector insertion holes, if at least one of the plurality of pins is not normally inserted into the connector insertion holes, the pins are not inserted normally. The power conversion device according to claim 1, wherein the power conversion device is configured to come into contact with the step portion. The second connector portion further includes a base portion on which the plurality of the pins are arranged.
The plurality of pins are arranged on the base portion in a direction orthogonal to the direction in which the plurality of pins are arranged and on one side in a direction along the surface of the first connector portion on the second substrate side. Has been
The step portion is located on one side of the support member side hole portion in a direction orthogonal to the direction in which the plurality of pins are arranged and in a direction along the surface of the first connector portion on the second substrate side. The power conversion device according to claim 2, which is arranged. The power conversion device according to claim 3, wherein the step portion is provided along the arrangement direction of the plurality of pins. The power conversion device according to claim 4, wherein the step portion has a wall shape provided along the arrangement direction of the plurality of pins. Any one of claims 1 to 5, wherein the height position of the step portion with respect to the first substrate is lower than the height position of the end portion of the first connector portion on the second substrate side with respect to the first substrate. The power converter according to the section. The support member is provided so as to face the first convex portion, and further includes a second convex portion that guides the second connector portion when the second connector portion is connected to the first connector portion.
The one according to any one of claims 1 to 6, wherein the protruding height of the first convex portion from the surface of the support member is substantially equal to the protruding height of the second convex portion from the surface of the support member. Power converter. In the second substrate, the first convex portion is inserted and the first convex portion is inserted in a state where the second connector portion of the second substrate is connected to the first connector portion of the first substrate. The power conversion device according to any one of claims 1 to 7, wherein a hole on the side of the second substrate is provided. The support member is provided so as to face the first convex portion, and further includes a second convex portion that guides the second connector portion when the second connector portion is connected to the first connector portion.
The power conversion device according to claim 8, wherein the protruding height of the first convex portion from the surface of the support member is higher than the protruding height of the second convex portion from the surface of the support member.

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