JPWO2015076249A1 - Power converter - Google Patents

Abstract

This is a power conversion device having a storage board 2 (housing) and a unit 3 that is detachably provided in the storage board 2. A guide 4, a fastener 5, and a connector 6 are provided on the inner peripheral portion of the unit insertion portion 2 a into which the unit 3 of the storage board 2 is inserted. On the back surface of the unit 3, a notch 8 into which the fastener 5 is fitted and a connection bar 7 to be inserted into the connector 6 are provided. When inserting the unit 3 into the unit insertion portion 2a along the guide 4, the fastener 5 and the notch portion 8 are fitted to guide the unit 3 to the normal position. After guiding the unit 3 to the normal position, the connector 6 and the connection bar 7 are electrically connected. According to such a power converter, the operation of attaching the unit 3 to the storage board 2 is facilitated.

Description

  The present invention relates to a power conversion device in which a unit on which components constituting a circuit are mounted is detachably provided in a housing.

  In the power conversion device, for example, a unit on which a power conversion circuit component such as an IGBT is mounted is detachable from the housing, and the unit inserted in the housing is a connector (or a disconnector, a contactor, or the like). There is one that is electrically connected to the switchboard via the cable (for example, Patent Document 1).

  In a power conversion device in which such a unit is removably provided in a housing, the housing-side circuit is connected so that electrical connection between the housing-side circuit (for example, a switchboard) and the unit-side circuit is reliably performed. It is necessary to mount the unit at a position where the connection portion and the connection portion of the circuit on the unit side are aligned (hereinafter referred to as a normal position).

  However, when the unit is mounted, the unit may be displaced. In such a case, it may be difficult to mount the unit at the normal position.

  For this reason, in the power conversion device according to the related art, a rail is provided in the unit insertion portion of the housing in which the unit is inserted, and the unit is held by the sliding member that slides on the rail, so that the unit is correctly adjusted by the rail. The position is guided to prevent the unit from shifting.

  More specifically, a slide rail 15 as shown in FIG. 15 is used. The slide rail 15 has an outer channel 16 fixed to the housing and an inner channel 17 fixed to the unit. The inner channel 17 is inserted into the outer channel 16 when the unit is inserted into the housing. Is done. That is, when the unit is inserted into the housing, the slide rail 15 performs positioning in the vertical direction and the horizontal direction with respect to the unit insertion direction, so that the connection portion of the circuit on the housing side and the connection portion of the circuit on the unit side The electrical connection is surely made.

  However, attaching the rail to the housing (and holding the unit on the sliding member) is a factor that increases the cost of the power conversion device and a factor that increases the manufacturing cost, such as that it takes time to install the unit. There is a risk. Moreover, since the space which provides a rail is needed, there exists a possibility that size reduction of a power converter device may be prevented.

Japanese Utility Model Publication No. 06-074092

  SUMMARY OF THE INVENTION An object of the present invention is to provide a technology that contributes to an easy mounting operation of a unit in a power conversion device in which a unit on which a component constituting a circuit is mounted is detachable from a housing.

  One aspect of the power conversion device of the present invention that achieves the above object is a power conversion device in which a unit housing a component constituting a circuit is detachably provided in a housing, wherein the unit is inserted into the unit. The housing has a notch at a side end, and the housing is provided with a unit insertion part into which the unit can be inserted and removed, and a guide provided in an inner peripheral part of the unit insertion part and extending in the insertion / removal direction of the unit. And a fastener that is provided on an inner peripheral portion of the unit insertion portion and that fits into a notch portion of the unit when the unit is inserted into the housing.

  Further, another aspect of the power conversion device of the present invention that achieves the above object is a power conversion device in which a unit housing a part that constitutes a circuit is detachably provided in a housing, wherein the housing includes: A unit insertion portion into which the unit can be inserted and removed; a guide provided in an inner peripheral portion of the unit insertion portion and extending in the insertion and removal direction of the unit; and a fastener provided at an insertion side end portion of the unit of the guide And the unit has a sliding member extending from a side portion of the unit, and before the electrical connection between the circuit of the housing and the circuit of the unit is made, the sliding member The unit is inserted into the unit insertion portion so as to slide on the guide, and the fastener guides the unit to a position where electrical connection between the circuit of the housing and the circuit of the unit is possible. .

(A) The perspective view which shows the state in which the unit of the power converter device which concerns on 1st Embodiment of this invention was accommodated, (b) The state where the unit of the power converter device which concerns on 1st Embodiment of this invention was pulled out. It is a perspective view shown. It is an enlarged view of the unit insertion part of the storage panel of the power converter device which concerns on 1st Embodiment of this invention. (A) Top view of fastener, (b) Side view of fastener. It is a back perspective view of the unit of the power converter concerning a 1st embodiment of the present invention. It is an enlarged view of the notch part of a unit. It is explanatory drawing explaining the process in which the fastener of a storage board fits into the notch part of a unit. It is a longitudinal cross-sectional view which shows the state which the fastener fitted to the notch part of the unit. (A) The perspective view which shows the state in which the unit of the power converter device which concerns on 2nd Embodiment of this invention was accommodated, (b) The state where the unit of the power converter device which concerns on 2nd Embodiment of this invention was pulled out. It is a perspective view shown. It is an enlarged view of the unit insertion part of the storage panel of the power converter device which concerns on 2nd Embodiment of this invention. (A) It is a perspective view of a fastener, (b) It is a side view of a fastener. It is a back perspective view of the unit of the power converter concerning a 2nd embodiment of the present invention. It is an enlarged view of the notch part of a sliding member. It is explanatory drawing explaining the process in which the fastener of a storage panel fits into the notch part of a sliding member. It is a side view which shows the state which the fastener fitted to the notch part of a sliding member. (A) The figure which shows the slide rail of the power converter device which concerns on a prior art, (b) AA sectional drawing of Fig.15 (a), (c) It is a B direction arrow directional view of Fig.15 (a).

  A power converter according to an embodiment of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
As shown in FIGS. 1A and 1B, a power conversion device 1 according to the first embodiment of the present invention includes a storage panel 2 (housing) and a unit 3 that is detachably provided in the storage panel 2. And have. In the description of the embodiment, the direction in which the unit 3 is pulled out is the front direction (front surface), and the direction in which the unit 3 is inserted is the rear direction (back surface). However, the front-rear direction does not limit the present invention. (The same applies to the second embodiment).

  The storage board 2 is a switchboard, for example. As shown in FIG. 2, the storage board 2 has a unit insertion portion 2a into which the unit 3 is inserted. A guide 4, a fastener 5, and a connector 6 (housing side connection portion) are provided on the inner peripheral portion of the unit insertion portion 2 a.

  The guide 4 is erected from the inner bottom portion of the unit insertion portion 2a and is provided along the front-rear direction of the unit insertion portion 2a. The guide 4 is a plate member having an L-shaped longitudinal section having a fixed portion 4a in contact with the inner bottom portion of the unit insertion portion 2a and a guide portion 4b erected from the end portion of the fixed portion 4a. The fixed portion 4a is a unit. It is fixed to the inner bottom part of the insertion part 2a.

  The fastener 5 is an inner bottom portion of the unit insertion portion 2a and is provided in the vicinity of a position where the lower end of the back surface of the unit 3 is located when the unit 3 is inserted. The fastener 5 extends in the forward direction (that is, the opening direction of the unit insertion portion 2a) from the standing portion 5a provided so as to stand upright from the bottom surface portion of the unit insertion portion 2a. And a fitting portion 5b. As shown in FIG. 3A, both side portions 5c of the distal end portion of the fitting portion 5b are formed in a shape having a curvature so that the distal end portion is tapered. That is, the width of the tip of the fitting portion 5b is gradually narrowed toward the tip. Further, as shown in FIG. 3B, the tip of the fitting portion 5b is bent upward, and a holding portion 5d is formed at the tip of the fitting portion 5b.

  The connector 6 is an inner peripheral portion of the unit insertion portion 2 a and is provided to face the back surface of the unit 3. The connector 6 performs electrical connection between a circuit provided in the storage board 2 and a circuit stored in the unit 3. In addition, it is good also as a form which electrically connects the circuit provided in the storage panel 2 and the circuit accommodated in the unit 3 via a disconnector or a contactor.

  The unit 3 is, for example, an inverter unit, and a control circuit, a power supply circuit, a semiconductor element, etc. (not shown) are accommodated in the unit 3. As shown in FIGS. 1A and 1B, the unit 3 is detachably provided in the storage board 2. A strip-shaped mounting plate 3 a extends from the upper end of the front surface of the unit 3, and the unit 3 is fixed to the storage panel 2 by screwing the mounting plate 3 a to the storage panel 2. Further, as shown in FIG. 4, connection bars 7 (unit side connection portions) that are respectively inserted into the connectors 6 are provided on the back surface of the unit 3 and corresponding to the connectors 6 of the storage board 2. . Furthermore, a notch 8 into which the fastener 5 is fitted is formed on the back surface of the unit 3 at a location corresponding to the fastener 5 of the storage board 2.

  As shown in FIG. 5, the notch 8 has a fitting groove 8a in which the fitting portion 5b of the fastener 5 is fitted, and a sliding contact portion 8b in which the bottom surface of the fitting portion 5b is in sliding contact. Note that the edge 8c of the opening of the fitting groove 8a is formed in a shape having a gentle curvature, and the fitting groove 8a has a shape that gently widens in the opening direction of the fitting groove 8a.

[How to install the unit]
With reference to FIG. 6, the method of attaching the unit 3 to the storage board 2 is demonstrated in detail. In addition, the arrow in a figure has shown the insertion direction of the unit 3. FIG. In addition, although the fitting part of the fastener 5 and the notch 8 is actually hidden by a cover or the like provided on the side surface of the unit 3, it is provided on the side surface of the unit 3 for easy understanding. The cover and the like are not shown.

  As shown in FIG. 6, the unit 3 is inserted into the storage panel 2 while the side surface of the unit 3 on the right side with respect to the insertion direction of the unit 3 is abutted against a guide 4 (not shown) disposed in the storage panel 2. To do.

  When the unit 3 is inserted into the storage panel 2, before the connection of the current-carrying part between the connector 6 and the connection bar 7 is started, the fastener 5 arranged in the storage panel 2 is provided on the rear surface of the unit 3. The unit 3 is inserted into the notch 8 and is guided to the normal position (in other words, the position where the connection between the connector 6 and the connection bar 7 is reliably performed).

  At this time, if there is a shift in the insertion position of the unit 3, the back portion of the unit 3 comes into contact with the fastener 5. For example, when the insertion position of the unit 3 is shifted in the left-right direction with respect to the normal position of the unit 3, both side portions 5 c of the fastener 5 and the edge portion 8 c of the notch portion 8 are formed in a shape having a curvature. Therefore, the insertion position of the unit 3 is guided to the normal position in the storage board 2 by the both side portions 5c (and the edge portion 8c). Further, when the insertion position of the unit 3 is shifted upward with respect to the normal position of the unit 3, the lower surface of the retaining portion 5 d of the fastener 5 comes into contact with the edge of the sliding contact portion 8 b of the notch portion 8. Thus, the insertion position of the unit 3 is guided to the normal position in the storage board 2 by the pressing portion 5d. As a result, even when the insertion position of the unit 3 is deviated from the normal position in the left-right direction or the upward direction, the unit 3 is arranged in the normal position by fitting the fastener 5 into the notch portion 8.

  Then, after the unit 3 is moved to the normal position by fitting the fastener 5 into the notch 8, when the unit 3 is further pushed in, the connection bar 7 of the unit 3 is inserted into the connector 6 of the storage panel 2. Then, electrical connection between the connector 6 and the connection bar 7 is performed. At this time, the standing portion 5 a of the fastener 5 is also fitted into the cutout portion 8. Finally, the mounting plate 3 a of the unit 3 is screwed to the storage board 2, and the unit 3 is fixed to the storage board 2.

  According to the power converter 1 which concerns on 1st Embodiment of this invention as mentioned above, the attachment operation | work of the unit 3 provided in the storage board 2 so that insertion / removal was possible can be performed easily.

  Moreover, since the power converter device 1 which concerns on 1st Embodiment of this invention can guide the unit 3 to a normal position reliably, between the circuit accommodated in the unit 3 and the circuit provided in the storage panel 2 The connection can be reliably performed, and the connector 6 and the connection bar 7 can be prevented from being damaged.

  Further, the strength of the unit 3 against vibration can be improved by fitting the fastener 5 to the notch 8. As shown in FIG. 7, when the fastener 5 is fitted into the notch portion 8, the lower surface of the fitting portion 5 b of the fastener 5 and the upper surface of the sliding contact portion 8 b of the notch portion 8 come into contact with each other. Is suppressed in the vertical direction. Further, the pressing portion 5d comes into contact with the upper end portion 8d at the back of the cutout portion 8 (in the front direction of the unit 3), so that the unit 3 is pressed downward by the pressing portion 5d. Vibration is further suppressed. In addition, when the fastener 5 is fitted into the notch portion 8, vibration in the left-right direction of the unit 3 is also suppressed, but by screwing the mounting plate 3a of the unit 3 to the storage board 2, The vibration in the left-right direction of the unit 3 is further suppressed.

  Moreover, since the power converter device 1 which concerns on 1st Embodiment of this invention does not provide the rail which guides the unit 3 to a normal position, the cost of the power converter device 1 can be reduced. Moreover, the operation | work which attaches a rail at the time of manufacture of the power converter device 1 can be reduced. Moreover, since the space for attaching a rail becomes unnecessary, the power converter device 1 can be reduced in size.

[Second Embodiment]
8A and 8B show a power conversion device 9 according to the second embodiment of the present invention. As shown in FIGS. 8A and 8B, a power conversion device 9 according to the second embodiment of the present invention includes a storage panel 10 (housing) and a unit 11 that is detachably provided in the storage panel 10. And have.

  The storage board 10 is a switchboard, for example. As shown in FIG. 9, the storage board 10 has a unit insertion portion 10a into which the unit 11 is inserted. A support member 12 that supports the unit 11, a fastener 13 provided at an end of the support member 12, and a connector 6 are provided on the inner peripheral portion of the unit insertion portion 10 a.

  The support member 12 is provided at a position corresponding to the lower end of the side surface of the unit 11 inserted into the unit insertion portion 10a. The support member 12 has a support portion 12a that contacts the lower surface of the unit 11, and a side portion 12b that faces the side surface of the unit 11, and is provided along the front-rear direction of the unit insertion portion 10a. The support member 12 has a function corresponding to the guide 4 of the power conversion device 1 according to the first embodiment.

  The fastener 13 is provided at the end of the support member 12 in the rear direction (that is, the back direction of the unit insertion portion 10a). As shown in FIGS. 10 (a) and 10 (b), the fastener 13 is used when the unit 11 is inserted into the unit insertion portion 10a. The holding portion 13a is in sliding contact with the upper surface of the sliding member 14, which will be described in detail later. An end portion of the sliding member 14 can be brought into contact with each other, and has a guide portion 13b that guides the sliding member 14 below the holding portion 13a. That is, the fastener 13 includes a fixed portion 13c that is fixed to the back end portion of the side portion 12b of the support member 12, a guide portion 13b that extends from the lower end portion of the fixed portion 13c to the back and a lower end of the guide portion 13b. And a holding part 13a extending in the back direction from the part.

  The connector 6 is an inner peripheral portion of the unit insertion portion 10 a and is provided to face the back surface of the unit 11. The connector 6 performs electrical connection between a circuit provided in the storage board 10 and a circuit stored in the unit 11. In addition, it is good also as a form which electrically connects the circuit provided in the storage panel 10 and the circuit accommodated in the unit 11 via a disconnector or a contactor.

  The unit 11 is, for example, an inverter unit, and a control circuit, a power supply circuit, a semiconductor element, etc. (not shown) are accommodated in the unit 11. As shown in FIGS. 8A and 8B, the unit 11 is detachably provided in the storage board 10. Further, strip-shaped mounting plates 11 a are provided at both side end portions in the vicinity of the front surface of the unit 11 so as to extend from the side end portions of the unit 11. 11 is fixed to the storage board 10. Further, as shown in FIG. 11, connection bars 7 that are respectively inserted into the connectors 6 are provided on the back surface of the unit 11 and corresponding to the connectors 6 of the storage board 10. Further, the sliding member 14 is provided at a lower end portion of the unit 11 and protruding from the side portion of the unit 11. In the description of the embodiment, the sliding member 14 is provided in the unit 11. However, the sliding member 14 may be formed integrally with the casing of the unit 11. That is, a plate that closes the lower surface of the unit 11 is provided so as to protrude from the plate that closes the side surface of the unit 11, and can function as the sliding member 14.

  The sliding member 14 is provided at the lower end of the unit 11. The sliding member 14 is a plate-like member disposed along the front-rear direction of the unit 11 and is provided so as to protrude from the side portion of the unit 11. When the unit 11 is inserted into the unit insertion portion 10a, the lower surface of the sliding member 14 of the unit 11 slides on the support portion 12a of the support member 12, and the unit 11 is placed at a predetermined position of the unit insertion portion 10a. Guided. Further, when the unit 11 is inserted in the unit insertion portion 10a, the sliding member 14 is supported by the support member 12, and the unit 11 is supported in the unit insertion portion 10a.

  As shown in FIG. 12, a notch portion 14 a is formed at the rear side (that is, the back side) end of the sliding member 14. That is, the thickness of the sliding member 14 is smaller at the back end than at the center. Moreover, it is the notch part 14a, Comprising: When the unit 11 is inserted in the unit insertion part 10a, the part in which the holding part 13a of the fastener 13 is located becomes a shape which the holding part 13a can fit.

[How to install the unit]
With reference to FIG. 13, the method of attaching the unit 11 to the storage board 10 is demonstrated in detail. It should be noted that the fastener 13 is actually hidden by a cover or the like provided on the side surface of the storage board 10, but the cover or the like provided on the side surface of the storage board 10 is not shown for easy understanding. Yes.

  As shown in FIG. 13, when the unit 11 is inserted into the storage board 10, the unit 11 is inserted by sliding the sliding member 14 on the support member 12. At this time, the position of the unit 11 in the left-right direction (that is, the direction perpendicular to the side surface of the unit 11) is determined by the side end surface of the sliding member 14 and the side portion 12b of the support member 12 contacting each other. Further, the lower surface of the sliding member 14 slides on the support portion 12a of the support member 12, so that the vertical direction of the unit 11 (that is, the direction perpendicular to the sliding contact surface between the slide member 14 and the support portion 12a). The position will be determined.

  When the unit 11 is inserted into the storage board 10, the notch portion 14 a of the sliding member 14 passes below the holding portion 13 a of the fastener 13 before the connector 6 is connected to the connection bar 7. That is, the sliding member 14 is guided to a predetermined position by the holding portion 13a or the guide portion 13b of the fastener 13. As a result, the unit 11 is guided to a predetermined position of the unit insertion portion 10a.

  If the chamfered portion is formed above the rear end portion of the sliding member 14, the unit 11 can be easily guided in the downward direction of the holding portion 13a. That is, it becomes easy to guide the unit 11 to the lower side of the fastener 13 by forming the end portion on the rear side of the sliding member 14 (that is, the end portion on the back side of the unit insertion portion 10a) into a gentle curved surface. . For example, when the unit 11 is displaced above a predetermined position, the end of the rear side of the sliding member 14 comes into contact with the guide portion 13b of the fastener 13 so that the sliding member 14 is below the holding portion 13a. It will be guided to the position which passes. Similarly, if the chamfered portion is formed at the side end of the holding portion 13a, the shift in the left-right direction of the unit 11 can be absorbed. That is, by forming the chamfered portion so that the end portion of the holding portion 13a extends toward the back, the side surface of the unit 11 slides on the side surface of the fastener 13 even when the horizontal direction of the unit 11 is shifted. By doing so, the shift of the unit 11 in the left-right direction is corrected.

  After the unit 11 is guided to a predetermined position of the unit insertion portion 10 a in this way, when the unit 11 is further pushed, the connection bar 7 of the unit 11 is inserted into the connector 6 of the storage panel 10 and connected to the connector 6. Electrical connection with the bar 7 is made. At this time, as shown in FIG. 14, the holding portion 13a of the fastener 13 is fitted into the notch portion 14a, and the lower surface of the holding portion 13a is in contact with the upper surface of the notch portion 14a. The deviation of the center arrow) is suppressed. Finally, the mounting plate 11 a of the unit 11 is screwed to the storage board 10 to fix the unit 11 to the storage board 10.

  According to the power conversion device 9 according to the second embodiment of the present invention as described above, it is possible to easily perform the attaching operation of the unit 11 that is detachably provided in the storage board 10.

  Moreover, since the power converter device 9 which concerns on 2nd Embodiment of this invention can guide the unit 11 to the normal position of the unit insertion part 10a, when storing the unit 11 in the storage panel 10, it is unit unit. 11 and the circuit provided on the storage board 10 can be reliably connected, and damage to the connector 6 and the connection bar 7 can be prevented.

  Further, since the fastener 13 is fitted into the notch portion 14a, vibration in the left-right direction of the unit 11 is also suppressed. Furthermore, the vibration resistance of the power converter 9 is improved by the lower surface of the holding portion 13a of the fastener 13 being in contact with the upper surface of the cutout portion 14a of the sliding member 14. In particular, the vibration resistance of the power converter 9 is further improved by providing the fastener 13 so that the holding portion 13 a of the fastener 13 presses the sliding member 14.

  Moreover, since the power converter device 9 which concerns on 2nd Embodiment of this invention does not provide the rail which guides the unit 11 to a normal position, the cost of the power converter device 9 can be reduced. Further, it is possible to reduce the work of accurately positioning the storage board 10 and the unit 11 and attaching the rails when the power conversion device 1 is manufactured. Moreover, since the space for attaching a rail becomes unnecessary, the power converter device 1 can be reduced in size.

  Moreover, since the power converter device 9 which concerns on 2nd Embodiment of this invention can support the unit 11 with the supporting member 12, it supports the unit 11 rather than the power converter device 1 which concerns on 1st Embodiment of this invention. Therefore, the cost of the power converter 9 can be reduced.

  As described above, the power conversion device of the present invention has been described in detail with a specific example. However, the power conversion device of the present invention is not limited to the above-described embodiment, and the design change can be made as appropriate without departing from the characteristics of the present invention. It is possible, and the design modified as such belongs to the technical scope of the power conversion device of the present invention.

  For example, the number of units provided in the power converter is not limited to the embodiment, and a necessary number of units can be provided in the power converter as appropriate. When a specific example is given, when the power conversion device of the present invention is applied to a cell-multiplexed multilevel inverter, a necessary number of units (inverter cells) are provided according to the output voltage to be increased. Will be.

  Moreover, in the power converter device of this invention, the shape of a fastener and a notch part is a shape where each shape has an individual effect, respectively. Therefore, a part of the effect of the power converter of the present invention can be obtained by using a fastener or a notch having a part of the shape having an effect.

  Moreover, in the power converter device 9 of 2nd Embodiment, the notch part 14a is not an essential structure, If the fastener 13 is fixed so that it may contact | abut on the side surface of the unit 11, and the upper surface of the sliding member 14, The cutout portion 14a can be omitted.

  Further, by combining the power conversion device 1 of the first embodiment and the power conversion device 9 of the second embodiment, the effects of the power conversion device 1 of the first embodiment and the power conversion device 9 of the second embodiment are combined. Can be obtained.

Claims (9)

A power conversion device provided in a housing so that a unit storing a part constituting a circuit is detachable,
The unit has a notch at the insertion side end of the unit,
The housing includes a unit insertion part into which the unit can be inserted and removed, and
A guide provided in an inner periphery of the unit insertion portion and extending in the insertion / removal direction of the unit;
A power converter, comprising: a fastener that is provided on an inner peripheral portion of the unit insertion portion and fits into a notch portion of the unit when the unit is inserted into the housing. At the insertion side end portion of the unit, a unit side connection portion that performs electrical connection between a circuit housed in the unit and a circuit provided in the housing is provided,
Provided on the inner periphery of the unit insertion portion is a housing side connection portion to which the unit side connection portion is connected,
The power conversion device according to claim 1, wherein the unit is inserted into the unit insertion portion to connect the unit side connection portion and the housing side connection portion.   The power converter according to claim 1 or 2, wherein the opening end of the notch is gently widened in the opening direction. The fastener includes an erected portion that is erected from the bottom surface of the unit insertion portion, and a fitting portion that extends from the distal end portion of the erection portion in the opening direction of the unit insertion portion. Have
The said notch part has a fitting groove | channel which the said fitting part fits, and a sliding contact part which slidably contacts the bottom face of the said fitting part. Power conversion device.   The power converter according to claim 4, wherein both side portions of the front end portion of the fitting portion are formed so that the front end portion of the fitting portion is gradually tapered.   The power converter according to claim 4 or 5, wherein a distal end portion of the fitting portion is bent upward.   The power conversion device according to claim 1, wherein a support plate that supports the unit is provided in the unit insertion portion, and the guide is erected on the support plate.   The power conversion device according to any one of claims 1 to 6, wherein the guide includes a support portion that supports a lower surface of the unit, and a side portion that faces a side surface of the unit. A power conversion device provided in a housing so that a unit storing a part constituting a circuit is detachable,
The housing includes a unit insertion part into which the unit can be inserted and removed, and
A guide provided in an inner periphery of the unit insertion portion and extending in the insertion / removal direction of the unit;
A fastener provided at the insertion side end of the unit of the guide,
The unit has a sliding member extending from a side of the unit;
Before electrical connection between the circuit of the housing and the circuit of the unit, the unit is inserted into the unit insertion portion so that the sliding member slides on the guide, and the fastener is A power conversion device for guiding a unit to a position where electrical connection between the circuit of the casing and the circuit of the unit is possible.

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