JP2016201319A - Waterproof connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect a ventilation film, and to prevent the ventilation film from being blocked by liquid.SOLUTION: A first housing 10 and a second housing 20 are fitted to configure a waterproof space 30 storing a connection part of a first terminal fitting 14 and a second terminal fitting 23. In the first housing 10, a communication hole 34 penetrating from the inside of the waterproof space 30 to an outer wall surface 10F of the first housing 10 is formed. In the first housing 10, a ventilation film 50 preventing the passing of liquid and permitting the passing of gas is adhered so as to block the communication hole 34. A peripheral wall portion 36 is protrusively formed in an area surrounding the ventilation film 34 on the outer wall surface 10F of the first housing 10. A cover 60 is attached to the inside of the peripheral wall portion 36 so as to cover the ventilation film 50. A drain hole communicating the inside and the outside of the peripheral wall portion 36 is formed on the peripheral wall portion 36.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a waterproof connector.

  In a waterproof connector provided with a connector housing that can be mated with a mating connector and a terminal fitting that is accommodated in a cavity provided in the connector housing, the gap between the connector housing and the mating connector is hermetically sealed by a seal ring. The structure is such that the connector housing (inner wall of the cavity) and the terminal fitting are sealed in a liquid-tight manner with a rubber plug. Thereby, in the state which fitted the connector housing and the other party connector, the waterproof space which accommodates the connection part of terminal metal fittings liquid-tightly is comprised.

  Since the waterproof space is shielded from the outside air, if the temperature of the outside air changes, the inside of the waterproof space has a lower pressure than the outside air, and water may be sucked into the waterproof space through a slight gap between the wires. As a countermeasure against this, in the invention described in Patent Document 1, a vent hole that communicates the inside and outside of the waterproof space is provided on the outer wall of the connector housing that faces the waterproof space. It is configured to be closed with a gas permeable membrane. Thereby, since a pressure difference does not arise between the waterproof space and the outside air, it is possible to prevent water from entering the waterproof space.

JP 2009-93906 A

  In the waterproof connector described in Patent Document 1, since the gas permeable membrane is disposed at the back end portion of the recess formed in the outer wall of the connector housing, there is no fear that the gas permeable membrane is damaged due to the interference of foreign matter. However, when the connector housing is arranged so that the concave portion faces upward, if water enters the concave portion, the water blocks the gas permeable membrane, and air cannot flow between the inside and outside of the waterproof space.

  The present invention has been completed based on the above circumstances, and an object thereof is to protect the gas permeable membrane and prevent the gas permeable membrane from being clogged with liquid.

The present invention
A first housing with a first terminal fitting;
A second housing that includes a second terminal fitting and that forms a waterproof space that accommodates a connection portion between the first terminal fitting and the second terminal fitting in a state of being fitted to the first housing;
A seal member for preventing water from entering the waterproof space;
A communication hole formed in the first housing and penetrating from the waterproof space to the outer wall surface of the first housing;
A gas permeable membrane fixed to the first housing so as to prevent liquid from passing through and allow gas to pass through and block the communication hole;
A peripheral wall portion protruding from a region surrounding the gas permeable membrane in the outer wall surface of the first housing;
A cover attached to the inside of the peripheral wall so as to cover the gas permeable membrane;
It is characterized in that a drainage hole is formed in the peripheral wall portion and communicates the inside and the outside of the peripheral wall portion.

  According to this configuration, the interference of foreign matter with respect to the gas permeable membrane can be prevented by the cover. Since the liquid adhering to the outer surface of the gas permeable membrane is discharged to the outside of the peripheral wall portion through the drain hole, there is no possibility that the outer surface of the gas permeable membrane is blocked by the liquid.

The exploded perspective view showing the state where the 1st housing removed the air permeable membrane and the cover in Example 1 Sectional drawing showing the fitting state of a 1st housing and a 2nd housing Partial enlarged view of FIG. AA line sectional view of FIG. Side view of the first housing showing the cover removed CC sectional view of FIG. BB sectional view of FIG. Front view of cover Side view of cover

(A) In the waterproof connector of the present invention, the peripheral wall portion may have a substantially rectangular tube shape having four wall surface portions, and the drain holes may be provided in all of the four wall surface portions.
According to this configuration, the drainage efficiency is excellent.

(B) The waterproof connector of the present invention is formed in the peripheral wall portion, and is formed in a window hole for communicating the inside and the outside of the peripheral wall portion with an outer peripheral edge of the cover, and is a locking surface on the inner periphery of the window hole. A locking projection that holds the cover in a state of being attached to the peripheral wall portion by locking to the peripheral wall portion, and the gap between the inner peripheral surface of the window hole and the locking projection serves as the drainage hole. Good.
According to this configuration, since the window hole has both a function for attaching the cover to the peripheral wall part and a function as a drain hole, the shape of the peripheral wall part can be simplified.

(C) In the waterproof connector of the present invention, in (b), the cover may be displaceable so that the locking projection and the locking surface are moved closer to and away from each other.
According to this configuration, the liquid inside the peripheral wall portion is forcibly discharged by the displacement of the cover inside the peripheral wall portion due to vibration or the like during traveling of the automobile.

(D) The waterproof connector of the present invention is formed in the peripheral wall portion, formed in a notch portion that opens to the protruding end edge of the peripheral wall portion, and an outer peripheral edge of the cover, and is accommodated in the notch portion. A positioning projection for positioning the cover may be provided, and a gap between the inner surface of the notch and the positioning projection may be the drain hole.
According to this structure, since the notch part has the function for positioning a cover, and the function as a drainage hole, the shape of a surrounding wall part can be simplified.

(E) In the waterproof connector of the present invention, the cover may be kept in a non-contact state with the outer surface of the gas permeable membrane.
According to this configuration, the gas permeable membrane can be prevented from being damaged due to contact with the cover.

<Example 1>
A first embodiment of the present invention will be described below with reference to FIGS. The waterproof connector of the first embodiment includes a first housing 10 made of synthetic resin, a first rubber plug 17 (a sealing member described in claims), a second housing 20 made of synthetic resin, and a seal ring 21 (invoiced). And the second rubber plug 25 (the sealing member according to the claims), the gas permeable membrane 50, and the cover 60 made of synthetic resin. A waterproof connector comprises the wire harness (illustration omitted) mounted in a motor vehicle.

  As shown in FIG. 2, the first housing 10 includes a block-shaped terminal accommodating portion 11 and a hood that extends in a rectangular tube shape forward (rightward in FIG. 2) from the outer peripheral edge of the front end of the terminal accommodating portion 11. Part 12. Male first terminal fittings 14 are accommodated in the plurality of first terminal accommodating chambers 13 formed in the terminal accommodating portion 11, respectively. The tab 15 at the front end portion of the first terminal fitting 14 protrudes forward from the terminal accommodating portion 11. A first electric wire 16 is connected to the rear end portion of the first terminal fitting 14 by crimping. A cylindrical first rubber plug 17 is externally fitted in a region slightly behind the rear end of the first terminal fitting 14 in the first electric wire 16. The first rubber plug 17 seals the gap between the outer periphery of the first electric wire 16 and the inner periphery of the rear end portion of the first terminal accommodating chamber 13 in a liquid-tight manner.

  As shown in FIG. 2, a seal ring 21 is attached to the outer periphery of the second housing 20. A plurality of second terminal housing chambers 22 formed in the second housing 20 accommodate female second terminal fittings 23, respectively. A second electric wire 24 is connected to the rear end portion of the second terminal fitting 23 by crimping. A cylindrical second rubber plug 25 is externally fitted in a region slightly behind the rear end of the second terminal fitting 23 in the second electric wire 24. The second rubber plug 25 seals the gap between the outer periphery of the second electric wire 24 and the inner periphery of the rear end portion of the second terminal accommodating chamber 22 in a liquid-tight manner.

  As shown in FIG. 2, when the first housing 10 and the second housing 20 are fitted, the second housing 20 is fitted into the hood portion 12, and the tab 15 of the first terminal fitting 14 is moved to the second housing 20 (second It enters the terminal accommodating chamber 22) and is connected to the second terminal fitting 23. In a state in which both housings 10 and 20 are fitted, a narrow facing space 31 is formed between the front end surface of the terminal accommodating portion 11 and the front end surface of the second housing 20, and the inner peripheral surface of the hood portion 12 and the second housing A narrow cylindrical space 32 is formed between the outer peripheral surface 20 and the outer peripheral surface 20. The facing space 31, the cylindrical space 32, the first terminal accommodating chamber 13, and the second terminal accommodating chamber 22 are in communication with each other and constitute a waterproof space 30. In the waterproof space 30, a connection portion between the first terminal fitting 14 and the second terminal fitting 23 is accommodated.

  In a state where the first housing 10 and the second housing 20 are fitted, the gap between the outer peripheral surface of the second housing 20 and the inner peripheral surface of the hood portion 12 is sealed in a liquid-tight manner by the seal ring 21. The seal ring 21 prevents water from entering the cylindrical space 32 from the protruding end of the hood portion 12. Further, the first rubber plug 17 prevents water from entering the first terminal housing chamber 13 from the rear of the first housing 10. The second rubber plug 25 prevents water from entering the second terminal housing chamber 22 from the rear of the second housing 20. Therefore, both the rubber plugs 17 and 25 and the seal ring 21 hold the waterproof space 30 in a liquid-tight state (a state where water immersion is regulated).

  If the waterproof space 30 is completely cut off from the outside air, the waterproof space 30 passes through a slight gap in the electric wires 16 and 24 when the inside of the waterproof space 30 has a lower pressure than the outside air due to a temperature change of the outside air. There is a possibility that water may be sucked into 30 (first terminal accommodating chamber 13 or second terminal accommodating chamber 22). As a countermeasure, the waterproof connector of the first embodiment is provided with a gas permeable membrane 50 that allows gas to pass between the inside and the outside of the waterproof space 30 but prevents liquid from passing therethrough. The gas permeable membrane 50 is made of synthetic resin and has a disk shape.

  Next, the attachment structure of the gas permeable membrane 50 will be described. The waterproof space 30 has a communication space 33 in which the outer peripheral edge of the front surface of the terminal accommodating portion 11 is recessed rearwardly (that is, inside the terminal accommodating portion 11) in a bag path shape. The communication space 33 communicates with the outer peripheral edge of the facing space 31 and also communicates with the end of the cylindrical space 32 opposite to the seal ring 21 in the fitting direction of the housings 10 and 20. . The first housing 10 is formed with a circular communication hole 34 communicating from the outer wall surface 10F to the communication space 33 (waterproof space 30).

  A receiving portion 35 having a shape protruding in a trapezoidal cross section is formed over the entire periphery of the communication hole 34 at the hole edge portion of the communication hole 34 in the outer wall surface 10 </ b> F of the first housing 10. The outer peripheral edge of the inner surface of the gas permeable membrane 50 is fixed to the protruding end surface of the receiving portion 35 in a liquid-tight manner by welding. As a result, the communication hole 34 is blocked by the gas permeable membrane 50, and the flow of air between the inside and the outside of the waterproof space 30 is allowed, but the liquid between the inside and the outside of the waterproof space 30 ( Moisture flow is blocked.

  The first housing 10 is formed with a peripheral wall portion 36 that protrudes from the outer wall surface 10F into a substantially rectangular tube shape. The peripheral wall portion 36 is formed in a region surrounding the gas permeable membrane 50 in the outer wall surface 10F. The peripheral wall portion 36 includes a pair of first wall portions 37 (wall surface portions described in claims) that face each other in parallel in the front-rear direction (parallel to the fitting direction of the housings 10 and 20), and in the vertical direction. A pair of second wall portions 40 (wall surface portions described in claims) facing each other in parallel with a space therebetween are configured. The 1st wall part 37 and the 2nd wall part 40 are distribute | arranged so that a mutual right angle may be made, and it continues through the arcuate wall part of a quarter arc shape.

  Each of the pair of front and rear first wall portions 37 is formed with a substantially rectangular window hole 38 that allows the inside and the outside of the peripheral wall portion 36 to communicate with each other. The hole edge of the window hole 38 is continuous over the entire circumference. Of the inner peripheral surfaces of each window hole 38, the surface on the front end side in the protruding direction of the peripheral wall portion 36 (that is, the surface facing the first housing 10) is a locking surface 39. Each of the pair of upper and lower second wall portions 40 is formed with a substantially rectangular cutout portion 41 that opens largely at the protruding end edge. The notch 41 communicates the inside and the outside of the peripheral wall 36.

  The cover 60 includes a substantially rectangular main body portion 61 as a whole, a pair of front and rear locking protrusions 62 protruding from the outer peripheral edge of the main body portion 61, and a pair of upper and lower positioning protrusions 63 protruding from the outer peripheral edge of the main body portion 61. ing. In a state where the cover 60 is attached to the peripheral wall portion 36, the main body portion 61 is accommodated inside the peripheral wall portion 36 without being largely rattled in the vertical direction and the front-rear direction. When the cover 60 is attached, the pair of locking projections 62 enters the window hole 38 and the locking projections 62 are locked to the locking surface 39. As a result, the cover 60 is restricted from being detached from the peripheral wall portion 36 and is held in the attached state.

  The locking projection 62 slightly protrudes from the main body 61 toward the gas permeable membrane 50 side. Then, the locking projection 62 can be slightly displaced in the left and right direction parallel to the protruding direction of the peripheral wall portion 36 in the window hole 38 (that is, the direction approaching and separating from the locking surface 39). ing. Further, in the state where the locking projection 62 is most distant from the locking surface 39 within the displaceable region (that is, the state where the locking projection 62 is in contact with the outer wall surface 10F of the first housing 10 and is closest to the ventilation film 50), The main body portion 61 and the locking projection 62 are not in contact with the gas permeable membrane 50, and the surface of the main body portion 61 facing the first housing 10 faces the outer surface (surface) of the gas permeable membrane 50 with a gap.

  As shown in FIG. 3, the space between the inner peripheral surface of the window hole 38 and the outer surface of the locking projection 62 functions as a first drain hole 42 (a drain hole described in claims). The first drain hole 42 communicates the space facing the outer surface of the gas permeable membrane 50 within the peripheral wall portion 36 to the outside (front or rear) of the peripheral wall portion 36. That is, the first drain hole 42 serves as a discharge path for discharging the liquid (water) attached to the outer surface (surface) of the gas permeable membrane 50 to the outside of the peripheral wall portion 36. Further, as the locking projection 62 is displaced in the window hole 38, the opening area of the first drain hole 42 changes.

  The pair of positioning protrusions 63 are fitted into the notch 41 with the cover 60 attached to the peripheral wall 36. The dimension of the positioning protrusion 63 in the front-rear direction is set to be larger than the dimension of the window hole 38 and the locking protrusion 62 in the vertical direction. As a result, even if the main body 61 is fitted into the peripheral wall 36 with the cover 60 turned 90 ° back and forth or up and down, the positioning protrusion 63 cannot enter the window hole 38. Therefore, there is no possibility that the cover 60 is attached to the peripheral wall portion 36 in an unauthorized direction. Further, when the locking projection 62 is displaced to the position closest to the gas permeable membrane 50 in the window hole 38, the surface of the positioning projection 63 facing the first housing 10 is spaced from the inner end surface of the notch 41. Opposite with a gap.

  As shown in FIG. 4, the space between the positioning projection 63 and the back end surface of the notch 41 functions as a second drain hole 43 (drain hole described in claims). The second drain hole 43 communicates the space facing the outer surface of the gas permeable membrane 50 in the interior of the peripheral wall portion 36 to the outside (upper or lower) of the peripheral wall portion 36. That is, the second drain hole 43 serves as a discharge path for discharging the liquid (moisture) attached to the outer surface (surface) of the gas permeable membrane 50 to the outside of the peripheral wall portion 36. Further, as the locking protrusion 62 is displaced in the window hole 38, the opening area of the second drain hole 43 changes.

  Since the waterproof connector of the first embodiment is provided with the gas permeable membrane 50, the pressure difference between the inside and the outside of the waterproof space 30 does not increase. Therefore, there is no possibility that the water is immersed in the waterproof space 30 through a slight gap in the electric wires 16 and 24. Further, since the cover 60 that covers the outer surface of the gas permeable membrane 50 is provided, there is no possibility that foreign matter adheres to the outer surface of the gas permeable membrane 50 or that the outer surface of the gas permeable membrane 50 is damaged by the interference of the foreign matter.

  Further, the peripheral wall portion 36 for holding the cover 60 in the attached state is formed so as to surround the gas permeable membrane 50, and the protruding end surface of the peripheral wall portion 36 has a large opening, so that the liquid that has entered the peripheral wall portion 36. (Moisture) may adhere. If the liquid remains attached to the entire outer surface of the gas permeable membrane 50, the gas permeable membrane 50 cannot pass the gas, and there is a concern that the inside of the waterproof space 30 is at a lower pressure than the outside air. However, in the present embodiment, since the first drain hole 42 and the second drain hole 43 are formed in the peripheral wall portion 36, the liquid adhering to the outer surface of the gas permeable membrane 50 is first caused by vibrations during traveling of the automobile. The water is discharged to the outside of the peripheral wall portion 36 through the drain holes 42 and the second drain holes 43. Therefore, there is no possibility that the entire outer surface of the gas permeable membrane 50 is blocked by the liquid.

  Further, the liquid drainage path (the first drainage hole 42 and the second drainage hole 43) is formed in all of the pair of front and rear first wall parts 37 and the pair of upper and lower second wall parts 40 of the peripheral wall part 36. Even if the directions of the housings 10 and 20 are reversed in the front-rear direction or the front-rear direction, one of the first drain hole 42 and the second drain hole 43 is always opened below the ventilation film 50. Therefore, the liquid adhering to the outer surface of the gas permeable membrane 50 can be reliably discharged.

  As described above, the waterproof connector of the present embodiment includes the first housing 10 to which the first terminal fitting 14 is attached and the second housing 20 to which the second terminal fitting 23 is attached. In a state in which both housings 10 and 20 are fitted, a waterproof space 30 for accommodating the connecting portions of both terminal fittings 14 and 23 is formed. Further, the waterproof connector is provided with a seal ring 21 and rubber plugs 17 and 25 as seal members for preventing water from entering the waterproof space 30. A communication hole 34 is formed in the first housing 10 so as to penetrate from the inside of the waterproof space 30 to the outer wall surface 10 </ b> F of the first housing 10. In addition, a gas permeable membrane 50 that prevents passage of liquid and allows passage of gas is fixed to the first housing 10 so as to block the communication hole 34.

  Further, a peripheral wall portion 36 protrudes from a region surrounding the gas permeable membrane 50 in the outer wall surface 10F of the first housing 10, and a cover 60 is attached to the inside of the peripheral wall portion 36 so as to cover the gas permeable membrane 50. ing. The peripheral wall portion 36 is formed with a first drain hole 42 and a second drain hole 43 that allow the inside and the outside of the peripheral wall portion 36 to communicate with each other. According to this configuration, the cover 60 can prevent foreign matter from interfering with the gas permeable membrane 50. Since the liquid adhering to the outer surface of the gas permeable membrane 50 is discharged to the outside of the peripheral wall portion 36 through the drain hole, there is no possibility that the outer surface of the gas permeable membrane 50 is blocked by the liquid.

  The peripheral wall portion 36 has a substantially rectangular tube shape having four wall surface portions (the first wall portion 37 and the second wall portion 40), and the drain holes 42 and 43 have four wall surface portions (the first wall portion). It is provided in all of the part 37 and the 2nd wall part 40). Therefore, even if the direction of the waterproof connector changes in the front-rear direction or the vertical direction, excellent drainage efficiency is maintained.

  The peripheral wall portion 36 is formed with a window hole 38 that allows the inside and the outside of the peripheral wall portion 36 to communicate with each other. The outer peripheral edge of the cover 60 is engaged with an engaging surface 39 on the inner periphery of the window hole 38. A locking projection 62 is formed to hold the cover 60 in a state of being attached to the peripheral wall portion 36. A gap between the inner peripheral surface of the window hole 38 and the locking projection 62 serves as a first drain hole 42. According to this configuration, since the window hole 38 has both a function for attaching the cover 60 to the peripheral wall part 36 and a function as the first drain hole 42, the shape of the peripheral wall part 36 can be simplified. .

  Further, the cover 60 can be displaced so that the locking projection 62 and the locking surface 39 are moved closer to and away from each other. According to this configuration, the liquid inside the peripheral wall portion 36 is forcibly discharged when the cover 60 is displaced inside the peripheral wall portion 36 due to vibration or the like during traveling of the automobile. Therefore, the drainage back row is good.

  In addition, the peripheral wall portion 36 is formed with a notch 41 that opens to the protruding edge of the peripheral wall portion 36, and the positioning protrusion that positions the cover 60 by being accommodated in the notch 41 on the outer peripheral edge of the cover 60. 63 is formed. A gap between the inner surface of the notch 41 and the positioning projection 63 serves as a second drainage hole 43. According to this configuration, the cutout portion 41 has both a function for positioning the cover 60 and a function as the second drainage hole 43, so that the shape of the peripheral wall portion 36 can be simplified.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the said Example, although the drainage hole was provided in all the four wall surface parts which comprise a surrounding wall part, it is good also as a form which does not provide a drainage hole in any wall surface part among four wall surface parts.
(2) In the above embodiment, the window hole has both a function for attaching the cover to the peripheral wall part and a function as a drain hole. However, the part for attaching the cover to the peripheral wall part and the drain hole are separately provided. You may form in.
(3) In the above embodiment, the cover can be displaced so that the locking projection and the locking surface are moved closer to and away from each other, but the cover may be fixed so as not to be displaced with respect to the peripheral wall portion. Good.
(4) In the above embodiment, the notch has both a function for positioning the cover and a function as a drainage hole. However, a part for positioning the cover and the drainage hole may be provided separately.
(5) In the above embodiment, the cover is attached so as not to contact the gas permeable membrane, but the cover may be in contact with the gas permeable membrane.
(6) In the above embodiment, the gas permeable membrane is fixed to the first housing by welding, but the means for fixing the gas permeable membrane to the first housing may be adhesion or the like.

DESCRIPTION OF SYMBOLS 10 ... 1st housing 10F ... Outer wall surface of 1st housing 14 ... 1st terminal metal fitting 17 ... 1st rubber stopper (seal member)
20 ... second housing 21 ... seal ring (seal member)
23 ... 2nd terminal metal fitting 25 ... 2nd rubber stopper (seal member)
30 ... Waterproof space 34 ... Communication hole 36 ... Peripheral wall part 37 ... 1st wall part (wall surface part)
38 ... Window hole 39 ... Locking surface 40 ... Second wall (wall surface)
41 ... Notch 42 ... First drain hole (drain hole)
43 ... Second drainage hole (drainage hole)
50 ... Breathing membrane 60 ... Cover 62 ... Locking protrusion 63 ... Positioning protrusion

1 is an exploded perspective view showing a state in which a gas permeable membrane and a cover are removed from a first housing in Embodiment 1. FIG. Sectional drawing showing the fitting state of a 1st housing and a 2nd housing Partial enlarged view of FIG. AA line sectional view of FIG. Side view of the first housing showing the cover removed CC sectional view of FIG. BB sectional view of FIG. Front view of cover Side view of cover

Further, the liquid drainage path (the first drainage hole 42 and the second drainage hole 43) is formed in all of the pair of front and rear first wall parts 37 and the pair of upper and lower second wall parts 40 of the peripheral wall part 36. Even if the directions of the housings 10 and 20 are reversed in the front-rear direction or the up-and-down direction, one of the first drain hole 42 and the second drain hole 43 is always opened below the ventilation film 50. Therefore, the liquid adhering to the outer surface of the gas permeable membrane 50 can be reliably discharged.

Claims (6)

A first housing with a first terminal fitting;
A second housing that includes a second terminal fitting and that forms a waterproof space that accommodates a connection portion between the first terminal fitting and the second terminal fitting in a state of being fitted to the first housing;
A seal member for preventing water from entering the waterproof space;
A communication hole formed in the first housing and penetrating from the waterproof space to the outer wall surface of the first housing;
A gas permeable membrane fixed to the first housing so as to prevent liquid from passing through and allow gas to pass through and block the communication hole;
A peripheral wall portion protruding from a region surrounding the gas permeable membrane in the outer wall surface of the first housing;
A cover attached to the inside of the peripheral wall so as to cover the gas permeable membrane;
A waterproof connector, comprising: a drainage hole formed in the peripheral wall portion for communicating the inside and the outside of the peripheral wall portion. The peripheral wall portion has a substantially rectangular tube shape having four wall surface portions,
The waterproof connector according to claim 1, wherein the drainage hole is provided in all of the four wall surfaces. A window hole that is formed in the peripheral wall portion and communicates the inside and the outside of the peripheral wall portion;
A locking projection formed on an outer peripheral edge of the cover, and holding the cover in a state of being attached to the peripheral wall portion by locking to an inner locking surface of the window hole;
The waterproof connector according to claim 1 or 2, wherein a gap between an inner peripheral surface of the window hole and the locking projection serves as the drainage hole.   The waterproof connector according to claim 3, wherein the cover is displaceable so that the locking protrusion and the locking surface are moved closer to and away from each other. A notch portion formed in the peripheral wall portion and opened at a protruding end edge of the peripheral wall portion;
A positioning projection formed on an outer peripheral edge of the cover and positioned in the cutout portion to position the cover;
The waterproof connector according to any one of claims 1 to 4, wherein a gap between the inner surface of the notch and the positioning protrusion serves as the drainage hole.   The waterproof connector according to any one of claims 1 to 5, wherein the cover is kept in a non-contact state with an outer surface of the gas permeable membrane.

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