JP6628414B2 - Connector waterproof structure - Google Patents

Description

  The present invention relates to a waterproof connector structure.

  As a connector waterproof structure, there is known a structure in which a cable connector is connected to a connector on a device side, and a connector and a connection portion of the cable connector are covered with a waterproof cover. The waterproof cover is divided into a pair of half members. The pair of half members are integrally held by the locking pieces being locked by the locking projections, and are assembled to the connector. In this state, the connection portion of the connector and the cable connector is covered with a pair of half members (for example, see Patent Document 1).

Japanese Patent No. 4765818

  However, in the connector waterproof structure of Patent Literature 1, a pair of half members are directly attached to a connection portion between the connector and the cable connector. For this reason, it is conceivable that rainwater or the like may enter the connection portion of the connector and the cable connector from the portion where the pair of half members are assembled.

  Therefore, the present invention provides a connector waterproof structure that can prevent water from entering a connection portion between a connector on a device side and a cable connector.

In order to solve the above-mentioned problem, the invention described in claim 1 includes a connector provided on a side of a housing in a power conversion device and a cable connector provided on one end of a cable (for example, an embodiment). The water receiving portion (for example, the second water of the embodiment) disposed above the connector connecting portion (for example, the connector connecting portion 18 of the embodiment) with respect to the connector connecting portion which is a connection portion between the cable connecting portion and the cable connector 16). a receiving portion 26), at least a portion of the front Kisui receiving (e.g., covering from above at least part 37b) of the drainage channel embodiment, the mounting portion of the water receiving portion (e.g., the embodiment of the mounting portion 45 ) Is attached to the waterproof cover (for example, the waterproof cover 22 of the embodiment), and the water receiving portion enters from a space between the waterproof cover and the water receiving portion (for example, the space 81 of the embodiment). Water, a top of the connector connecting portion, the drainage portion for draining from a position not overlapping the connector connection portion in plan view (e.g., the embodiment of the water drainage portions 28) are erected along the drainage portion Wall portion (for example, the wall portions 29, 104, and 114 of the embodiment) and the attachment portion extending toward the waterproof cover, and the attachment portion is configured so that the width direction of each of the drainage portions is orthogonal to each other. A first mounting portion (e.g., the first mounting portions 46 and 102 of the embodiment) and a second mounting portion (e.g., the second mounting portion 47 of the embodiment) which are erected upward from the portion. Locking holes whose opening directions are orthogonal to each other are formed in the portion and the second mounting portion, and the waterproof cover is provided in the locking hole (for example, the locking hole 48 of the embodiment) of the first mounting portion. From a direction crossing the width direction of the first mounting portion in plan view. The first locking claw to be stopped (for example, the first locking claw 68 of the embodiment) and the locking hole of the second mounting portion (for example, the locking hole 49 of the embodiment) are inserted into the second locking portion in plan view. A second locking claw (for example, the second locking claw 75 of the embodiment) for locking from a direction intersecting the width direction of the second mounting portion, and a width dimension of the locking hole of the second mounting portion. Is characterized by being larger than the width dimension of the second locking claw .

As described above, the waterproof cover is provided so as to overlap the drain portion of the water receiving portion from above. In addition, a wall was erected along the drain. Therefore, the water that has entered from the space between the waterproof cover and the water receiving portion can be received by the drain portion provided with the wall portion. Further, the water received by the drainage part can be drained to a position away from the connector connection part by the drainage part, so that the accumulation of water in the drainage part can be suppressed. This can prevent water from entering the connector connection portion from above.
Note that the connector connection portion refers to a portion where the connector on the device side and the cable connector are connected. The connector connection direction refers to the direction in which the cable connector is connected to the connector on the device side.
In addition, by making the waterproof cover a resin member, the locking claws of the waterproof cover can be made to have excellent flexibility. Therefore, in a state where the locking claw of the waterproof cover is locked in the locking hole of the mounting portion, the locking claw can easily be made to follow the locking hole. That is, the stress acting on the mounting portion by the locking claw can be suppressed.
Thereby, the locking claw of the waterproof cover can be suitably locked in the locking hole of the mounting portion, and the waterproof cover can be held at an appropriate position.
Further, by locking the locking claws of the waterproof cover with the locking holes of the mounting portion, it is possible to suppress rattling of the waterproof cover.
Further, a first mounting portion and a second mounting portion were provided as mounting portions. In addition, the second mounting portion is erected perpendicularly to the direction of the first mounting portion. Further, the width dimension of the locking hole of the second mounting portion is made larger than the width dimension of the second locking claw.
Therefore, in a state where the second locking claw is positioned in the connector connection direction by the locking hole of the first mounting portion, the assembly tolerance of the second mounting portion and the second locking claw is adjusted by the engagement of the second mounting portion. It can be absorbed by the space between the stop hole and the second locking claw. Thereby, the waterproof cover can be securely attached to the predetermined position by the first attachment portion and the second attachment portion.

In the invention described in claim 2, the drainage portion has a discharge port (for example, the discharge port 42a of the embodiment) at a position above the connector connection portion and not overlapping the connector connection portion in plan view. And it is characterized in that it is formed in a downward slope from the space side to the discharge port.

  In this way, the drainage portion was formed with a downward slope from the space side to the discharge port. Thereby, the water guided from the space side to the drainage portion can be efficiently drained to a position away from the connector connection portion.

The invention as set forth in claim 7, a connector provided on the side of the housing in the power conversion device, a cable connector provided at one end of the cable, to the connector connecting portion is connected portion, said connector and water receiving portion disposed above the connection portion covers at least a portion of the front Kisui receiving from above, and a waterproof cover attached to the mounting portion of the water receiving portion, wherein the water receiving portion, A drain portion that drains water entering from a space between the waterproof cover and the water receiving portion from a position above the connector connection portion and not overlapping the connector connection portion in a plan view; a wall portion which is erected Te, wherein the waterproof cover, cable cover covering the outside of the cable (e.g., cable cover 85 of the embodiment) cover body surrounding the (e.g., on the embodiment A bar main body 54, a lower cover main body 61) and a front end (for example, a front end portion which extends from the cover main body toward the cable cover and is superimposed on the cable cover in a plan view while being separated from the cable cover, for example, , The front end portions 51b and 52a of the embodiment), and the cable cover is provided in the space between the cable cover and the front end portion (for example, the upper space 87 and the lower space 88 of the embodiment ). It is characterized by having an overhang portion (for example, overhang portion 85a of the embodiment) facing from the inside of the cover .

Thus, the waterproof cover was separated from the cable cover in the connector connection direction. Thereby, generation of noise due to contact between the cable cover and the waterproof cover can be suppressed.
Further, an overhang portion was formed in the cable cover, and the overhang portion was opposed to the space between the cable cover and the waterproof cover. This can prevent water from entering the space between the cable cover and the waterproof cover from the connector connection direction.

In the invention described in claim 3 , the waterproof cover includes an upper waterproof cover (for example, the upper waterproof cover 51 of the embodiment) that covers the connector connection portion from above, and a lower waterproof cover (for example, that covers the connector connection portion from below). For example, the lower waterproof cover 52) of the embodiment is characterized by being divided into two parts.

  Thus, the waterproof cover was divided into the upper waterproof cover and the lower waterproof cover. Thereby, the work of assembling the waterproof cover to the connector connection portion becomes easy, and the workability of assembling the waterproof cover can be enhanced.

In the invention described in claim 4 , the waterproof cover has a direction intersecting the width direction of the first mounting portion when the first locking claw is locked in the locking hole of the first mounting portion. Then, the first mounting portion is sandwiched between the first rib (for example, the first rib 69 of the embodiment) and the second mounting portion in a direction intersecting the width direction of the second mounting portion. And a second rib (for example, the second rib 73 of the embodiment) which is opposed and interposed therebetween .

  As described above, the movement of the first mounting portion in the connector connection direction is restricted by the first rib. Further, the movement of the second mounting portion in the direction orthogonal to the connector connection direction is restricted by the second rib. Accordingly, the waterproof cover can be assembled in a state where it is positioned at a predetermined position in the connector connection direction and in a direction orthogonal to the connector connection direction.

The invention described in claim 6 is characterized in that the wall portion is formed by bending an edge of the water receiving portion.

  As described above, the wall portion can be easily formed by bending the edge of the water receiving portion to form the wall portion. Further, since the drainage portion and the wall portion can be formed by one member, it is possible to prevent the water guided to the drainage portion from leaking from, for example, a gap between the drainage portion and the wall portion. Thus, the water guided to the drainage section can be reliably drained from the outlet.

The invention described in claim 7 is characterized in that the attachment portion is attached to a portion of the water receiving portion located inside the wall portion.

  In this way, by attaching the mounting portion from the wall in the connector connection direction, the water that has entered from the locking portion between the mounting portion and the locking claw can be received by the drainage portion. Accordingly, it is possible to prevent the water flowing from the locking portion between the mounting portion and the locking claw from entering the connector connection portion.

  According to the present invention, the waterproof cover is overlaid on the drainage portion of the water receiving portion, and the wall is erected along the drainage portion. Therefore, the water that has entered from the space between the waterproof cover and the water receiving portion can be received by the drain portion, and can be drained to a position away from the connector connection portion by the drain portion. This can prevent water from entering the connector connection portion.

It is a perspective view showing the connector waterproof structure in a 1st embodiment of the present invention. It is a perspective view showing the state where a waterproof cover was disassembled from the connector waterproof structure in a 1st embodiment of the present invention. It is a perspective view showing the state where the 2nd water receiving part was disassembled from the connector waterproofing structure in a 1st embodiment of the present invention. It is a perspective view showing the 2nd water receiving part of the connector waterproofing structure in a 1st embodiment of the present invention. It is sectional drawing which shows the state which attached the upper waterproof cover to the 2nd water receiving part in 1st Embodiment of this invention. It is sectional drawing which follows the VII-VII line of FIG. 1 of the connector waterproof structure in 1st Embodiment of this invention. It is sectional drawing which follows the VII-VII line of FIG. 1 of the connector waterproof structure in 1st Embodiment of this invention. It is sectional drawing which shows the state by which the 1st, 2nd latch part was latched by the 1st, 2nd attachment part of the connector waterproof structure in 1st Embodiment of this invention. It is sectional drawing which shows the state which looked at the waterproof cover of the connector waterproof structure in 1st Embodiment of this invention from the front. It is an outline sectional view showing the relation between the water receiving part and the upper waterproof cover in a 2nd embodiment of the present invention. It is an outline sectional view showing the relation between the water receiving part and the upper waterproof cover in a 3rd embodiment of the present invention.

  Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the arrow FR indicates the front of the power converter 10, the arrow UP indicates the upper side of the power converter 10, and the arrow LH indicates the left side of the power converter 10.

(1st Embodiment)
As shown in FIGS. 1 and 2, a connector 14 is provided on a right side wall 12 of the power conversion device 10. That is, the connector 14 is a connector on the device side. The cable connector 16 is connected to the connector 14 on the device side. The cable connector 16 is provided at one end of the cable 17. The other end of the cable 17 is electrically connected to the battery. The cable 17 is, for example, a panel lock connector having a sealing function attached to a housing, such as a DC cable, a control connector, a three-phase connector, or the like.
When the cable connector 16 is connected to the connector 14 on the device side, the power converter 10 and the cable connector 16 are electrically connected. Therefore, the power converter 10 is electrically connected to the battery via the cable 17.
Hereinafter, a portion where the connector 14 on the device side and the cable connector 16 are connected is referred to as a connector connection portion 18.

  The power converter 10 is provided in a hybrid car, an electric car, and the like. The power converter 10 contains therein a boost converter, a step-down converter, an inverter, and the like. The boost converter is a member that increases the voltage of the battery. The inverter is a member that converts a DC voltage supplied from a battery into an AC voltage.

A connector waterproof structure 20 is provided on the right side wall 12 of the power converter 10.
The connector waterproof structure 20 includes a water receiving portion 21 provided above the connector 14 on the device side, and a waterproof cover 22 that is overlaid on the water receiving portion 21 and covers the connector connection portion 18.
The water receiving section 21 includes a first water receiving section 25 that covers the connector 14 on the device side from above, and a second water receiving section 26 attached to the first water receiving section 25. The first water receiving portion 25 is a metal member, and is formed by projecting the housing 11 of the power converter 10 from the right side wall 12. The first water receiving portion 25 is formed in a rectangular shape in a plan view, and covers an upper portion of the connector 14 on the device side from above. Thus, the ingress of water from above the connector 14 on the device side can be suppressed by the first water receiving portion 25.

As shown in FIG. 3, a second water receiver 26 is attached to the first water receiver 25. The second water receiving portion 26 is a metal member, and has a support portion 27 attached to the connector 14 on the device side, a drainage portion 28 integrally formed with the support portion 27, and a standing portion along the drainage portion 28. And a wall portion 29 to be formed.
The support portion 27 is formed in a crank shape in plan view so as to extend from the right side wall 12 of the power conversion device 10 to the middle of the right side 25b through the front side 25a of the first water receiving portion 25. The support portion 27 is attached to the device-side connector 14 from above the front side 25a and the right side 25b with a plurality of bolts 32.

When the second water receiving portion 26 is attached to the device-side connector 14, the inner peripheral edge 27 a of the support portion 27 contacts the front side 25 a and the right side 25 b of the first water receiving portion 25. The sealant 34 (see FIG. 4) is filled between the inner peripheral edge 27a of the support portion 27 and the front side 25a and the right side 25b.
Therefore, it is possible to prevent water from entering the inside of the waterproof cover 22 from between the second water receiving portion 26 and the first water receiving portion 25.

As shown in FIG. 4, a drain portion 28 is integrally formed along an outer peripheral edge 27b of the support portion 27. The drainage portion 28 has an inner wall portion 36 formed integrally along the outer peripheral edge 27b of the support portion 27, and a drainage channel 37 projecting from the lower end of the inner wall portion 36 to the outside of the connector 14 on the device side.
The inner wall portion 36 is bent downward from the outer peripheral edge 27b of the support portion 27. The drainage channel 37 extends substantially horizontally from the lower end of the inner wall portion 36 to the outside of the connector 14 on the device side.

The drainage channel 37 has a first drainage channel 41 extending in a direction orthogonal to the connector connection direction A, and a second drainage channel 42 extending in the connector connection direction A from the right end 41 a of the first drainage channel 41. The second drainage channel 42 extends in the connector connection direction A above the connector connection portion 18. The second drainage channel 42 has a discharge port 42a at the rear end of the connector connection direction A. The discharge port 42a is formed at a position P1 (see FIG. 6) away from above the connector connecting portion 18 and rearward.
The connector connection direction A is a direction in which the cable connector 16 is connected to the connector 14 on the device side, and is a direction along the front-rear direction of the power converter 10.

The wall 29 is provided along the outer side 37 a of the drainage channel 37. The wall portion 29 is bent up from the outer side 37 a of the drainage channel 37 to be integrally erected from the outer side 37 a of the drainage channel 37.
By bending the outer side 37a of the drainage channel 37 to form the wall 29, the wall 29 can be easily formed. Further, the drainage channel 37 and the wall 29 can be formed by one member. Therefore, it is possible to prevent the water guided to the drainage channel 37 from leaking from the gap between the drainage channel 37 and the wall portion 29, for example. Thereby, the water guided to the drainage channel 37 can be reliably drained from the outlet 42a.

As shown in FIGS. 5 and 6, the drainage channel 37 is inclined downward toward the outlet 42 a. Specifically, the first drainage channel 41 is inclined downward from the wall 29 to the inner wall 36. The second drainage channel 42 is inclined downward from the front end 42b toward the outlet 42a. The front end 42b of the second drainage channel 42 is connected to the right end 41a of the first drainage channel 41 (see FIG. 4).
Therefore, the water guided to the drainage channel 37 is smoothly guided to the outlet 42 a via the drainage channel 37, and is efficiently drained to a position away from above the connector connection portion 18.

  Returning to FIG. 4, the drainage channel 37 is provided with a mounting portion 45. The mounting portion 45 includes a first mounting portion 46 provided in the first drainage channel 41 and a second mounting portion 47 provided in the second drainage channel 42. The first mounting portion 46 and the second mounting portion 47 are mounted closer to the inner wall portion 36 than the wall portion 29 is. That is, the first attachment portion 46 is attached from the wall portion 29 in the connector connection direction A.

Specifically, the first mounting portion 46 has a base 46a joined to the first drainage channel 41 from above by spot welding, an adhesive, or the like. In this state, the first mounting portion 46 is erected upward toward the first locking portion 65 (see FIG. 2) of the waterproof cover 22. Further, the first mounting portion 46 is disposed facing a direction orthogonal to the connector connection direction A (that is, a left-right direction). The first mounting portion 46 has a locking hole 48 formed in a rectangular shape.
Similarly to the first mounting portion 46, the second mounting portion 47 has a base 47a joined to the second drainage channel 42 from above by spot welding or an adhesive. In this state, the second mounting portion 47 is erected upward toward the second locking portion 66 (see FIG. 2) of the waterproof cover 22. The second mounting portion 47 is arranged in a direction orthogonal to the direction of the first mounting portion 46. The second mounting portion 47 has a locking hole 49 formed in a rectangular shape.

  Here, the base 46a of the first mounting portion 46 and the base 47a of the second mounting portion 47 are joined to the drainage channel 37 from above by spot welding or adhesive. Therefore, there is no need to form a mounting hole for mounting the bases 46a, 47a in the drainage channel 37. Thereby, it is possible to prevent the water that has entered the drainage channel 37 from leaking from the attachment hole to the connector connection portion 18 side.

As shown in FIGS. 2 and 7, the waterproof cover 22 is attached to the first attachment portion 46 and the second attachment portion 47. By attaching the waterproof cover 22 to the first attaching portion 46 and the second attaching portion 47, the waterproof cover 22 is supported by the second water receiving portion 26 via the first attaching portion 46 and the second attaching portion 47. .
The first mounting portion 46 and the second mounting portion 47 will be described later in detail.

The waterproof cover 22 is divided into two parts: an upper waterproof cover 51 that covers the connector connection portion 18 from above, and a lower waterproof cover 52 that covers the connector connection portion 18 from below.
The upper waterproof cover 51 is a resin member. The upper cover body 54 covers the connector connection portion 18 from above, an overlapping portion 55 provided at a rear end of the upper cover body 54, and both sides of the upper cover body 54. And a cover locking claw 56 provided at the portion. The cover locking claw 56 on the right side wall 12 side of the power converter 10 is not shown. The upper cover body 54 is formed in a semicircular cross section.

The lower waterproof cover 52 is a member made of resin, and includes a lower cover main body 61 that covers the connector connection portion 18 from below, and cover fitting portions 62 provided on both sides of the lower cover main body 61. The lower cover main body 61 is formed in a semicircular cross section.
The cover locking claw 56 is locked to the cover fitting portion 62 while the cover locking claw 56 of the upper waterproof cover 51 is fitted to the cover fitting portion 62 of the lower waterproof cover 52. As a result, the upper waterproof cover 51 and the lower waterproof cover 52 are connected in a tubular shape, and the connector connecting portion 18 is covered over the entire circumference by the upper waterproof cover 51 and the lower waterproof cover 52.
As described above, the waterproof cover 22 is divided into the upper waterproof cover 51 and the lower waterproof cover 52. Thereby, the work of assembling the waterproof cover 22 to the connector connection portion 18 is facilitated, and the workability of assembling the waterproof cover 22 can be improved.

As shown in FIGS. 5 and 8, the overlapping portion 55 is formed following the drainage channel 37. The overlapping portion 55 is disposed above the second water receiving portion 26 in the connector connection direction A so as to overlap at least a part 37b of the drainage channel 37 from above.
The overlapping portion 55 includes a first locking portion 65 provided near the power converter 10 and a second locking portion 66 provided at a rear end of the drainage channel 37 near the outlet 42a.

The first locking portion 65 has a fitting hole 67 formed at a position corresponding to the first mounting portion 46, and a first locking claw 68 provided inside the fitting hole 67.
The fitting hole 67 of the first locking portion 65 is vertically penetrated. A first rib 69 is formed in the fitting hole 67. The first rib 69 has a pair of front ribs 71 and a pair of rear ribs 72. The pair of front ribs 71 are formed on the front wall surface of the fitting hole 67 at intervals in the width direction. The pair of rear ribs 72 are formed on the rear wall surface of the fitting hole 67 so as to face the pair of front ribs 71. A first locking claw 68 is formed between the pair of rear ribs 72.

The pair of front ribs 71 and the pair of rear ribs 72 are arranged at an interval in the front-rear direction so that the first mounting portion 46 can be inserted. When the first mounting portion 46 is inserted between the pair of front ribs 71 and the pair of rear ribs 72, the first locking claws 68 are locked in the locking holes 48 of the first mounting portion 46. Thereby, the first locking portion 65 is mounted on the first mounting portion 46. In this state, the movement of the first mounting portion 46 in the front-rear direction (that is, the connector connection direction A) is restricted by the pair of front ribs 71 and the pair of rear ribs 72.
Here, the width L1 of the locking hole 48 of the first mounting portion 46 is formed larger than the width L2 of the first locking claw 68.

The second locking portion 66 is arranged to be orthogonal to the direction of the first locking portion 65. That is, the second locking portion 66 has the fitting hole 74 formed at a position corresponding to the second mounting portion 47 and the second locking claw 75 provided inside the fitting hole 74.
The fitting hole 74 of the second locking portion 66 is vertically penetrated. A second rib 73 is formed in the fitting hole 74. The second rib 73 has a pair of right ribs 76 and a pair of left ribs 77. The pair of right ribs 76 are formed on the right wall surface of the fitting hole 74 with an interval in the front-rear direction. The pair of left ribs 77 is formed on the left wall surface of the fitting hole 74 so as to face the pair of right ribs 76. A second locking claw 75 is formed between the pair of left ribs 77.

The pair of right ribs 76 and the pair of left ribs 77 are arranged at an interval in the width direction so that the first mounting portion 46 can be inserted. When the second mounting portion 47 is inserted between the pair of right ribs 76 and the pair of left ribs 77, the second locking claws 75 are locked in the locking holes 49 of the second mounting portion 47. Thereby, the second locking portion is mounted on the second mounting portion 47. In this state, the movement of the second mounting portion 47 in the left-right direction (that is, the direction orthogonal to the connector connection direction A) by the pair of right ribs 76 and the pair of left ribs 77 is described.
Here, the width L3 of the locking hole 49 of the second mounting portion 47 is formed larger than the width L4 of the second locking claw 75.
The first locking claw 68 and the second locking claw 75 constitute the locking claw 64.

Thus, the first mounting portion 46 and the second mounting portion 47 are provided as the mounting portion 45. Further, the second mounting portion 47 is arranged in a direction orthogonal to the direction of the first mounting portion 46. Further, the width L3 of the locking hole 49 of the second mounting portion 47 is made larger than the width L3 of the second locking claw 75.
Therefore, in a state where the first locking claw 68 is positioned in the front-rear direction by the locking hole 48 of the first mounting portion 46, the assembly tolerance of the second mounting portion 47 and the second locking claw 2 is set to the second It can be absorbed by the space between the locking hole 49 of the mounting portion 47 and the second locking claw 75.

On the other hand, the width L1 of the locking hole 48 of the first mounting portion 46 is formed larger than the width L2 of the first locking claw 68. Therefore, in a state where the second locking claw 75 is positioned in the width direction by the locking hole 49 of the second mounting portion 47, the assembly tolerance of the first mounting portion 46 and the first locking claw 68 is set to the first tolerance. It can be absorbed by the space between the locking hole 48 of the mounting portion 46 and the first locking claw 68.
Thus, the waterproof cover 22 is positioned in the front-rear direction by the first mounting portion 46 and the first locking portion 65, and is positioned in the left-right direction by the second mounting portion 47 and the second locking portion 66. Thereby, the waterproof cover 22 is securely assembled at the predetermined position.

Here, when the upper waterproof cover 51 is made of a resin member, the first locking claws 68 and the second locking claws 75 can be formed as flexible claws. Therefore, in a state where the first locking claw 68 is locked in the locking hole 48 of the first mounting portion 46, the first locking claw 68 can easily be made to follow the locking hole 48. That is, the stress acting on the first mounting portion 46 by the first locking claw 68 can be suppressed.
Similarly, in a state in which the second locking claw 75 is locked in the locking hole 49 of the second mounting portion 47, the second locking claw 75 can easily follow the locking hole 49. That is, the stress acting on the second mounting portion 47 by the second locking claw 75 can be suppressed.

Therefore, the first locking claw 68 can be suitably locked in the locking hole 48 of the first mounting portion 46, and the upper waterproof cover 51 can be held at an appropriate position. Further, the second locking claw 75 can be suitably locked in the locking hole 49 of the second mounting portion 47.
Thereby, the upper waterproof cover 51 can be more appropriately assembled at an appropriate predetermined position.
Further, the first locking claw 68 is preferably locked in the locking hole 48 of the first mounting portion 46, and the first locking claw 68 is preferably locked in the locking hole 48 of the first mounting portion 46. Thereby, rattling of the upper waterproof cover can be suppressed.

Further, the first mounting portion 46 and the second mounting portion 47 are mounted closer to the inner wall portion 36 than the wall portion 29 is. In this manner, by attaching the first attachment portion 46 and the second attachment portion 47 to the inner wall portion 36 side from the wall portion 29, the locking portion between the first attachment portion 46 and the fitting hole 67 and the second attachment portion Water that has penetrated from the locking portion between the fitting 47 and the fitting hole 74 can be received in the drainage channel 37.
Accordingly, it is possible to prevent the water flowing from the locking portion between the first mounting portion 46 and the fitting hole 67 and the locking portion between the second mounting portion 47 and the fitting hole 74 from entering the connector connection portion 18. it can.

  By the way, the first mounting portion 46 and the second mounting portion 47 have their respective base portions 46a, 47a joined to the drainage channel 37 from above by spot welding or adhesive. Therefore, it is difficult to directly position the first mounting portion 46 and the second mounting portion 47 on the connector 14 on the device side. Therefore, one of the plurality of bolts 32 for attaching the second water receiving portion 26 to the connector 14 on the device side is used as a positioning member for the first attaching portion 46 and the second attaching portion 47. Hereinafter, one of the plurality of bolts 32 will be described as “positioning bolt 32A”.

The positioning bolt 32A is attached to the device-side connector 14 so that the positioning bolt 32A is positioned with respect to the device-side connector 14. By positioning the first mounting portion 46 and the second mounting portion 47 with respect to the positioning bolt 32A, the first mounting portion 46 and the second mounting portion 47 can be positioned with respect to the connector 14 on the device side.
As a result, the first locking portion 65 and the second locking portion 66 of the waterproof cover 22 are locked by the first mounting portion 46 and the second mounting portion 47, and the waterproof cover 22 is connected to the connector 14 on the device side. Is mounted at a predetermined position with respect to.

In this state, the overlapping portion 55 is disposed at a position separated from the supporting portion 27 by a predetermined interval S1. A space 81 is formed between the overlapping portion 55 and the support portion 27. That is, the overlapping portion 55 of the upper waterproof cover 51 is overlapped with the front half of the first drainage channel 41 and the right half of the second drainage channel 42 from above. The wall portion 29 is arranged at a position where the overlapping portion 55 is overlapped from above.
Thereby, the water that has entered as shown by the arrow B from the space 81 between the overlapping portion 55 and the support portion 27 can be received by the drainage channel 37.

Here, the wall 29 is erected along the outer side 37 a of the drainage channel 37. Therefore, it is possible to prevent the water that has entered from the space 81 between the overlapping portion 55 and the support portion 27 from flowing out of the drainage channel 37 by the wall portion 29. Thereby, the water that has entered from the space 81 between the overlapping portion 55 and the support portion 27 can be satisfactorily received in the drainage channel 37.
Further, the water received in the drain 37 can be drained from the outlet 42a as shown by an arrow C (see FIG. 6). Therefore, the drainage can be drained to a position away from the connector connection portion 18 in the drainage channel 37, and the accumulation of water in the drainage channel 37 can be suppressed. Thereby, it is possible to prevent water from entering the connector connection portion 18 from above.

As shown in FIG. 1, the upper waterproof cover 51 of the waterproof cover 22 is a portion where the overlapping portion 55 faces the second water receiving portion 26. It is conceivable that the overlapping portion 55 is brought into contact with the first water receiving portion 25 and the contact portion is filled with a sealant. However, when the overlapping portion 55 is brought into contact with the first water receiving portion 25, the shape of a portion where the overlapping portion 55 is brought into contact with the first water receiving portion 25 becomes complicated. In addition, the upper waterproof cover 51 is a resin member, and it is difficult to form the upper waterproof cover 51 into a complicated shape. For this reason, even if a sealing material is filled in the bonding portion between the overlapping portion 55 and the first water receiving portion 25, it is difficult to ensure the sealing performance of the bonding portion.
Therefore, the second water receiving portion 26 of the overlapping portion 55 is arranged so that the second water receiving portion 26 receives water. Thereby, it is possible to reliably receive water entering from between the second water receiving portion 26 and the overlapping portion 55 with a simple configuration.

As shown in FIG. 9, when the waterproof cover 22 is attached to the first attachment portion 46 and the second attachment portion 47 (see FIG. 2), the left end 51 a of the upper waterproof cover 51 is attached to the right side wall of the power conversion device 10. Touch 12 The sealant 34 is filled between the left end 51 a of the upper waterproof cover 51 and the right side wall 12 of the power converter 10.
Therefore, it is possible to prevent water from entering the inside of the waterproof cover 22 from between the left end portion 51 a of the upper waterproof cover 51 and the right side wall 12 of the power converter 10.

Returning to FIG. 7, the cable connector 16 is connected to the connector 14 on the device side from the connector connection direction A. The connector connecting portion 18 between the connector 14 on the device side and the cable connector 16 is disposed below the drain 37 (particularly, the first drain 41).
The cable 17 is connected to the cable connector 16, and the cable 17 is covered with a cable cover 85. The cable cover 85 has a projecting portion 85 a that projects outside the cable cover 85. The cable cover 85 extends forward from the cable connector 16.

In this state, the waterproof cover 22 is attached to the first attachment portion 46 and the second attachment portion 47 (see FIG. 4). In a state where the waterproof cover 22 is attached, the front end 51b of the upper waterproof cover 51 is overlaid on the cable cover 85 from above in a state of being separated from the cable connector 16 in the connector connection direction A.
Further, the front end portion 52a of the lower waterproof cover 52 is overlapped from below with a distance from the cable connector 16 in the connector connection direction A.

Thus, the front end 51b of the upper waterproof cover 51 is separated from the cable cover 85. Further, the front end 52a of the lower waterproof cover 52 is separated from the cable cover 85. That is, the front ends of the waterproof cover 22 (that is, the front ends 51 b and 52 a) are separated from the cable cover 85.
Therefore, noise caused by contact between the cable cover 85 and the front end 51b of the upper waterproof cover 51 and contact between the cable cover 85 and the front end 52a of the lower waterproof cover 52 can be suppressed.
Here, the overhang portion 85 a of the cable cover 85 is formed in an upper space 87 between the cable cover 85 and the front end 51 b of the upper waterproof cover 51, and a lower space 88 between the front end 52 a of the lower waterproof cover 52 as the cable cover 85. Is facing. Thus, the intrusion of water into the upper space 87 and the lower space 88 from the connector connection direction A can be suppressed by the projecting portion 85a of the cable cover 85.

  Next, a connector waterproof structure 100 according to the second embodiment and a connector waterproof structure 110 according to the third embodiment will be described with reference to FIGS. In the second and third embodiments, the same or similar members as those of the connector waterproof structure 20 of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

(2nd Embodiment)
As shown in FIG. 10, the connector waterproof structure 100 includes a first attaching portion 102 attached to the first water receiving portion 25 and a wall portion 104 provided in the drainage channel 37. This is the same as the connector waterproof structure 20 of the first embodiment.
The first mounting portion 102 is arranged in the connector connection direction A from the wall portion 104. Specifically, the first attachment portion 102 is attached to the first water receiving portion 25, and the other configuration is the same as the first attachment portion 46 of the first embodiment. The first locking portion 65 of the upper waterproof cover 51 is locked to the first mounting portion 102. Therefore, the upper waterproof cover 51 is supported by the first water receiving portion 25 via the first mounting portion 102.

Here, the first water receiving portion 25 is formed integrally with the housing 11 of the power conversion device 10. Therefore, the first water receiving portion 25 has sufficient strength and rigidity. Thus, the upper waterproof cover 51 is firmly supported by the first water receiving portion 25.
The wall portion 104 is provided behind the outer side 37 a of the drainage channel 37. Therefore, the mounting position of the wall portion 104 can be secured in a wide range. Thus, for example, a portion where the wall portion 104 does not interfere with the upper waterproof cover 51 or the like can be selected, and the degree of freedom in design can be increased.
In addition, it is preferable that the wall part 104 is arranged on the outer side 37 a side of the drainage channel 37 with respect to the first mounting part 102. By arranging the wall portion 104 on the outer side 37 a side of the drainage channel 37 with respect to the first attachment portion 102, water that has entered from the first attachment portion 102 can be received by the wall portion 104.

(Third embodiment)
As shown in FIG. 11, the connector waterproof structure 110 includes a water receiving portion 112 and a wall portion 114 bent from the outer side 37 a of the drainage channel 37. Other configurations are the same as those of the connector of the first embodiment. This is the same as the waterproof structure 20.
The water receiving portion 112 is formed by integrally forming the first water receiving portion 25 and the second water receiving portion 26 of the first embodiment, and other configurations are the same as those of the first water receiving portion 25 of the first embodiment. This is the same as the second water receiving section 26.

By forming the first water receiving portion 25 and the second water receiving portion 26 of the first embodiment integrally to form the water receiving portion 112, the number of parts can be reduced. Further, the sealant 34 filling the gap between the first water receiving portion 25 and the second water receiving portion 26 can be removed.
Further, the wall portion 114 is formed by being bent upward from the outer side 37 a of the drainage channel 37. Thereby, the water receiving portion 112 and the wall portion 114 can be formed by one member, and the number of parts can be further reduced.

  Note that the technical scope of the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the spirit of the present invention.

For example, in the first embodiment, an example has been described in which the overhang portion 85a is disposed inside the waterproof cover 22. However, the present invention is not limited to this, and the overhang portion 85a may be disposed outside the waterproof cover 22. It is.
Also in this case, it is possible to suppress water from entering the upper space 87 and the lower space 88 from the connector connection direction A by the overhang portion 85a.

  In the first embodiment, the example in which the second water receiving portion 26 and the upper waterproof cover 51 are separately formed has been described, but the present invention is not limited to this. For example, the second water receiving portion 26 and the upper waterproof cover 51 may be made of a resin member, and the two members of the second water receiving portion 26 and the upper waterproof cover 51 may be integrally formed via a resin hinge. It is possible.

DESCRIPTION OF SYMBOLS 10 ... Power conversion device 16 ... Cable connector 17 ... Cable 18 ... Connector connection part 20, 100, 110 ... Connector waterproof structure 21, 112 ... Water receiving part 22 ... Waterproof cover 25 ... First water receiving part 26 second water receiving portion 28 drainage portion 29, 104, 114 wall portion 37b at least part of drainage channel (at least part of water receiving portion)
37 drainage channel 41 first drainage channel 42 second drainage channel 42a outlet 45 mounting portions 46, 102 first mounting portion 47 second mounting portion 48 first mounting portion Locking hole 49 of the second mounting portion 51 upper waterproof cover 51b front end of the upper waterproof cover (front end of the waterproof cover)
52: Lower waterproof cover 52a: Front end of lower waterproof cover (front end of waterproof cover)
64 locking claw 65 first locking portion 66 second locking portion 68 first locking claw 75 second locking claw 81 space 85 cable cover 87 Upper space (space)
88 …… Bottom space (space)
85a Projecting portion A Connector connecting direction L1 Width of locking hole of first mounting portion L2 Width width of locking hole of first locking claw L3 Lengagement of second mounting portion Width L4 of locking hole L4 Width of locking hole of second locking claw P1 Position away from above connector connector

Claims (7)

The water disposed above the connector connection portion is a connection portion between the connector provided on the side of the housing and the cable connector provided at one end of the cable in the power conversion device. Receiving part,
Before covering at least part of Kisui receiving from above, and a waterproof cover attached to the mounting portion of the water receiving portion,
The water receiving section,
A drainage part that drains water that enters from a space between the waterproof cover and the water receiving part, above the connector connection part, from a position that does not overlap with the connector connection part in a plan view ;
A wall portion erected along the drainage portion,
The mounting portion extending toward the waterproof cover,
The mounting portion includes a first mounting portion and a second mounting portion that are erected upward from the drainage portion in a direction where their width directions are orthogonal to each other,
The first mounting portion and the second mounting portion are formed with locking holes whose opening directions are orthogonal to each other,
The waterproof cover,
A first locking claw that locks the locking hole of the first mounting portion from a direction intersecting a width direction of the first mounting portion in a plan view;
A second locking claw that locks the locking hole of the second mounting portion from a direction crossing the width direction of the second mounting portion in a plan view,
The connector waterproof structure according to claim 2, wherein a width dimension of the locking hole of the second mounting portion is larger than a width dimension of the second locking claw . The drainage section,
Above the connector connection portion , having a discharge port at a position that does not overlap with the connector connection portion in plan view ,
2. The connector waterproof structure according to claim 1, wherein the connector waterproof structure is formed with a downward slope from the space side toward the discharge port. 3. The waterproof cover,
An upper waterproof cover for covering the connector connection portion from above,
A lower waterproof cover that covers the connector connection section from below,
The connector waterproof structure according to claim 1 or 2 , wherein the connector is divided into two parts. The waterproof cover,
In a state where the first locking claw is locked in the locking hole of the first mounting portion,
A first rib facing in a direction intersecting the width direction of the first mounting portion with the first mounting portion interposed therebetween ;
A second rib facing in a direction intersecting the width direction of the second mounting portion with the second mounting portion interposed therebetween ;
The waterproof connector structure according to any one of claims 1 to 3, wherein the connector waterproof structure is provided. The wall portion,
The connector waterproof structure according to any one of claims 1 to 4 , wherein the connector is formed by bending an edge of the water receiving portion. The mounting portion,
The connector waterproof structure according to any one of claims 1 to 5 , wherein the water receiving portion is attached to a portion located inside the wall portion. The water disposed above the connector connection portion is a connection portion between the connector provided on the side of the housing and the cable connector provided at one end of the cable in the power conversion device. Receiving part,
Before covering at least part of Kisui receiving from above, and a waterproof cover attached to the mounting portion of the water receiving portion,
The water receiving section,
A drainage part that drains water that enters from a space between the waterproof cover and the water receiving part, above the connector connection part, from a position that does not overlap with the connector connection part in a plan view ;
A wall standing along the drainage section ,
The waterproof cover,
A cover body that surrounds a cable cover that covers the outside of the cable;
A front end portion that extends from the cover main body toward the cable cover, and is overlapped with the cable cover in the plan view in a state separated from the cable cover;
The connector waterproof structure according to claim 1, wherein the cable cover has a projecting portion facing from inside the waterproof cover in a space between the cable cover and the front end portion .

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