Charging inlet

Abstract

To provide a charging inlet that improves ease of assembly while ensuring waterproofing. [Solution] The charging inlet according to the present disclosure comprises a housing that has a detachable charging plug and holds a connection terminal inside, a wiring component that is inserted into the housing from outside through a wiring guide formed on the outer surface side of the outer wall of the housing, a waterproof plug that is inserted together with the wiring component into the wiring passage in the wiring guide and closes the wiring passage, and a cap member that is attached to an external opening in the wiring guide that opens to the outside of the housing and has a plug contact portion that can contact the waterproof plug in the wiring guide from the external opening side, wherein the cap member has a U-shaped notch that opens to the outer wall side in a second direction that intersects with the outer surface of the outer wall when viewed from a first direction along the outer surface of the outer wall, and the wiring component is inserted into the notch.

Description

Technical Field

[0006] ,

[0001] Embodiments of the present invention relate to a charging inlet.

Background Art

[0002] Conventionally, connectors installed in vehicles such as electric vehicles and plug-in hybrid vehicles have been proposed to supply (charge) power from outside the vehicle to the batteries mounted on the vehicles (see, for example, Patent Document 1). This type of connector is generally also called a charging inlet.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a charging inlet, it is expected to facilitate assembly while ensuring waterproofness.

[0005] One embodiment provides a charging inlet with improved assembly property while ensuring waterproofness. <00(000 / 29>

Means for Solving the Problems

[0006] One embodiment of the charging inlet includes a housing that has a detachable charging plug and holds a connection terminal inside, a wiring component that is inserted into the housing from outside through a wiring guide formed on the outer surface of the outer wall of the housing, a waterproof plug that is inserted together with the wiring component into the wiring passage in the wiring guide and closes the wiring passage, and a cap member that is attached to an external opening in the wiring guide that opens to the outside of the housing and has a plug contact portion that can contact the waterproof plug in the wiring guide from the external opening side, wherein the cap member has a U-shaped notch that opens to the outer wall side in a second direction that intersects with the outer surface of the outer wall when viewed from a first direction along the outer surface of the outer wall, and the wiring component is inserted into the notch. [Effects of the Invention]

[0007] According to one embodiment, a charging inlet can be provided that improves ease of assembly while ensuring waterproofness. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of a charging inlet according to one embodiment of the present invention. [Figure 2] This is a perspective view of the charging inlet shown above from a different direction. [Figure 3] This is a cross-sectional view of the charging inlet shown above, along the axial direction from the left to the center. [Figure 4] This is a cross-sectional view AA in Figure 3. [Figure 5] Figure 3 is a cross-sectional view of BB. [Figure 6] This is a perspective view of the charging inlet with the cap removed from the upper wiring guide. [Modes for carrying out the invention]

[0009] Specific embodiments of the present invention will be described below with reference to the figures. In the following description, components having the same or similar functions will be denoted by the same reference numerals. Duplication of these components may be omitted. Note that the components described below do not limit the scope of the embodiments.

[0010] Figures 1 and 2 are perspective views of a charging inlet 1 according to one embodiment of the present invention. Figure 3 is a cross-sectional view of the left and right central portions of the charging inlet 1 along the axial direction. Figure 4 is a cross-sectional view AA of Figure 3. Figure 5 is a cross-sectional view BB of Figure 3. Figure 6 is a perspective view with the cap member 40 removed from the upper wiring guide 35. In this specification, arrow X indicates the left-right direction, arrow Y indicates the front-back direction, and arrow Z indicates the up-down direction.

[0011] The charging inlet 1 shown in Figures 1 and 2 is a connector installed in vehicles equipped with batteries, such as electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs), and is connected to the wires extending from the battery installed in the vehicle. A mating connector, such as a charging plug (not shown), is detachably mated into the mating recess 63 (see Figure 1, etc.) of the charging inlet 1. The mating connector is connected to the wires extending from a power supply device outside the vehicle. By connecting this mating connector to the charging inlet 1, power is supplied to the battery from the power supply device outside the vehicle, and the battery is charged.

[0012] In this embodiment, the mating direction (insertion / removal direction) of the charging inlet 1 and the mating connector (not shown) will be described as the front-to-back direction. In the front-to-back direction, the mating connector side is considered the front, and the charging inlet 1 side is considered the rear. That is, the mating connector is mated and connected to the charging inlet 1 by moving from front to rear, and removed by moving in the opposite direction. The mating direction may be inclined upwards relative to the horizontal direction. Left and right in the left-to-right direction refer to left and right when facing forward.

[0013] As shown in Figures 1 and 2, the charging inlet 1 comprises a pair of terminal wires 10 and a housing 90 that accommodates the terminals 12 of the pair of terminal wires 10 and holds the pair of terminal wires 10. A pair of terminal-equipped wires 10 have one end of a pair of wires 11 connected to a pair of terminals 12. The other ends of the pair of wires 11 are connected to a battery (not shown). The wires 11 consist of a conductor core and an insulating resin sheath covering the conductor core (neither of which are shown).

[0014] The pair of terminals 12 have identical configurations. Each terminal 12 extends linearly along the front-to-back direction. The terminals 12 are spaced apart from each other and arranged in the left-to-right direction. Each terminal 12 is inserted into and held within a pair of terminal holding parts 31, which will be described later. For example, each terminal 12 is provided with a cylindrical female terminal portion (not shown) that protrudes forward from its front end surface. Of the pair of terminals 12, the female terminal portion of one terminal 12 functions as the anode terminal, and the female terminal portion of the other terminal 12 functions as the cathode terminal. When the charging inlet 1 is mated with the mating connector, the female terminal portion of one terminal 12 and the female terminal portion of the other terminal 12 are connected to the anode male terminal portion and the cathode male terminal portion (neither shown) of the mating connector, respectively. The rear ends of a pair of terminals 12 are connected to one end of the electric wire 11. The exposed conductor core wire at one end of the electric wire 11 is connected to the rear ends of the terminals 12 either directly or via a specified conductor component. This configuration electrically connects the terminals 12 to one end of the electric wire 11.

[0015] <Housing 90> As shown in Figures 1 and 2, the housing 90 comprises a base holder 50, a rear holder 80, an inner housing body 60, and an outer housing body 70. Each of the base holder 50, rear holder 80, inner housing body 60, and outer housing body 70 is a skeletal component of the housing 90 and forms the outer surface of the housing 90.

[0016] The base holder 50 functions to hold the pair of terminal-attached electric wires 10 while insulating them from each other with a gap in the width direction. The base holder 50 has a resin holder 30 which is a resin molded product.

[0017] The resin holder 30 functions to absorb and radiate the heat generated in the pair of terminals 12 and to insulate and protect the pair of terminals 12. The resin holder 30 integrally includes a pair of terminal holding portions (holder main bodies) 31 arranged in the width direction (left-right direction) and a connecting portion 32 that connects the pair of terminal holding portions 31 in the width direction. Each terminal holding portion 31 has a substantially cylindrical shape extending in the front-rear direction. The terminals 12 are inserted into the pair of terminal holding portions 31 from the rear, respectively.

[0018] The connecting portion 32 connects the pair of terminal holding portions 31 to each other. An upper wiring guide 35 that protrudes upward is provided on the upper outer surface (upper surface) 32a of the connecting portion 32. The upper surface 32a of the connecting portion 32 in the embodiment is a plane substantially parallel to the front-rear direction Y and the left-right direction X. The upper wiring guide 35 functions to guide the routing of the electric wire of an electric wire component (for example, a thermistor 77 for detecting terminal temperature, etc.) different from the charging electric wire 10. A cap member 40 is attached to the upper wiring guide 35.

[0019] A lower wiring guide 48 that protrudes downward is provided on the lower outer surface (lower surface) of the connecting portion 32. The lower wiring guide 48 functions to guide the routing of the electric wire of an electric wire component (for example, a ground wiring 48a (see FIG. 3), various signal wirings, etc.) different from the charging electric wire 10. A cap member 49 is attached to the lower wiring guide 48.

[0020] A rear holder 80 is attached to the rear end portion of the base holder 50. The rear holder 80 is a resin molded product, is assembled to the base holder 50 from the rear, and functions to hold the pair of terminal-attached electric wires 10 while keeping a gap in the width direction.

[0021] An inner housing body 60 is provided in front of the base holder 50, with a size that surrounds the outside of the pair of terminal holding portions 31 when viewed from the front-rear direction. The inner housing body 60 is disc-shaped with its thickness direction oriented in the front-rear direction, and the front end of the base holder 50 is connected to its rear surface. The inner housing body 60 is, for example, a resin molded product integrally formed from the same material as the base holder 50. Fastening portions are provided on both the left and right sides of the upper and lower parts of the inner housing body 60 for fastening and fixing to the outer housing body 70 with bolts oriented in the front-rear direction.

[0022] The outer housing body 70 is assembled to the inner housing body 60 from the front and also serves to fix the entire housing 90 to a mounting target (not shown) provided on the vehicle. The outer housing body 70 is a resin molded product and has a cylindrical tubular portion 71 that extends in the front-rear direction. The cylindrical portion 71 serves to form the fitting recess 63 of the charging inlet 1.

[0023] On the rear wall (bottom wall) of the mating recess 63, a pair of cylindrical female terminal housings (not shown) are provided, protruding forward, corresponding to the female terminal portions (not shown) of the pair of terminals 12. Each female terminal housing is located within the mating recess 63 and houses the female terminal portion inside.

[0024] The outer housing body 70 has a flange portion 72 that extends radially outward from the cylindrical portion 71. The flange portion 72 is rectangular when viewed from the front-rear direction. Bolt insertion holes 73 that penetrate in the front-rear direction are formed at each corner of the flange portion 72. Bolts (not shown) for fixing the charging inlet 1 to the mounting target part of the vehicle are inserted through the bolt insertion holes 73.

[0025] The charging inlet 1 is equipped with an actuator 75 to prevent the mating connector from becoming disconnected when connected. The actuator 75 is mounted at the bottom of the charging inlet 1. The actuator 75 is equipped with a locking pin 75a that can be inserted into a designated location on the mating connector in a direction perpendicular to the mating direction (e.g., vertical direction). The actuator 75 is operated by a drive signal from a control device (not shown) to extend and retract the locking pin 75a relative to the mating connector. This configuration prevents the mating connector from becoming accidentally or intentionally disconnected during battery charging, improving safety and ensuring that each charging cycle is performed reliably. The actuator 75 is an independent unit and is fixed to the housing 90 with bolts and nuts or the like.

[0026] A lid 76 is attached to the front side of the outer housing body 70 to open and close the front opening of the cylindrical portion 71. The lid 76 is rotatable around a hinge shaft 76a that is located on one side of the cylindrical portion 71 (left side in the figure) and extends vertically. A locking member 76b is located on the other side of the cylindrical portion 71 (right side in the figure) to hold the lid 76 in the closed position.

[0027] <Thermistor 77, upper wiring guide 35> Referring to Figures 3 to 6, a thermistor 77 for detecting the temperature of each terminal 12 is positioned on the upper surface 32a side of the connecting portion 32 of the housing 90. The thermistor 77 comprises a wire 77a extending in the front-rear direction along the upper surface 32a of the connecting portion 32, and a detection element (not shown) provided at the tip (front end) of the wire 77a.

[0028] An upper wiring guide 35 is provided above the front of the connecting portion 32, covering the area around the mounting portion 77b of the thermistor 77 to the housing 90 and guiding the routing path of the wiring 77a. The upper wiring guide 35 has a cylindrical guide body 35a, and the circular cross-sectional space within the guide body 35a is used as a routing passage K1 for routing the thermistor 77's wiring 77a from the detection element within a specified length. The front end of the upper wiring guide 35 abuts against and is joined to the rear of the inner housing body 60. The front of the routing passage K1 extends into the inner housing body 60, and the front end of the routing passage K1 is closed within the inner housing body 60. The rear end of the routing passage K1 is open to the rear at the rear end of the upper wiring guide 35. Hereinafter, the rear end of the upper wiring guide 35 will be referred to as the rear opening 36.

[0029] An insertion hole 37 is provided at the rear (front) end of the cable routing passage K1, allowing the detection element of the thermistor 77 to enter the housing 90. The thermistor 77 is inserted into the cable routing passage K1 from the rear, and its front end detection element is inserted into the insertion hole 37 of the housing 90 for mounting. A cylindrical rubber stopper (waterproof plug) 39 is inserted along with the wiring 77a in the middle (not limited to the center) of the cable routing passage K1. The rubber stopper 39 has an outer surface that is in close contact with the inner surface of the guide body 35a, preventing water from entering the rear (insertion hole 37 side) of the cable routing passage K1. The rubber stopper 39 has multiple (four in this embodiment) insertion holes 39a through which each of the multiple (four in this embodiment) wirings 77a is inserted. By setting the inner surface of each insertion hole 39a to be in close contact with the outer surface of each wiring 77a, water is prevented from entering through the insertion holes 39a. Multiple insertion holes 39a are located on the inner circumference side of the rubber stopper 39, at the top of the rectangular region 39b.

[0030] Referring to Figure 5, the upper wiring guide 35 comprises a guide body 35a with a cylindrical cross-section, a pair of vertical wall sections 35b extending upward from both the left and right sides of the upper part of the guide body 35a, and a temporary wall section 35c spanning between the upper ends of the pair of vertical wall sections 35b. The upper wiring guide 35 extends in the front-rear direction with a substantially constant cross-section. Hereinafter, the cross-sectional shape of the upper wiring guide 35 will be defined as the shape enclosed by the lower part of the guide body 35a, the pair of vertical wall sections 35b, and the erection wall section 35c in a cross-sectional view perpendicular to the front-rear direction of the upper wiring guide 35. The cross-sectional shape of the upper wiring guide 35 is substantially the same as the shape of the rear opening 36 when viewed from the rear (rear view shape).

[0031] The upper wiring guide 35 is spaced apart from the connecting portion 32 and the pair of terminal holding portions 31 when viewed from the front-rear direction. In the cross-sectional view of the upper wiring guide 35, the area enclosed by the upper part of the guide body 35a, the pair of vertical wall portions 35b, and the support wall portion 35c is a weight-reducing space K2. The support wall portion 35c is curved in an arc shape to follow the outer shape of the inner housing body 60 when viewed from the front-rear direction. On the left and right outer sides of the pair of vertical wall sections 35b, there are projections (guide-side engaging sections) 38 that project outwards to the left and right, extending the left and right ends of the erection wall section 35c. The upper end of the upper wiring guide 35 (erection wall section 35c and left and right projections 38) is provided so as to be curved in an arc shape when viewed from the front and rear directions.

[0032] A cap member 40 is attached to the rear opening 36 of the upper wiring guide 35 to partially close the opening and prevent the rubber stopper 39 in the wiring passage K1 from coming off. The cap member 40 has a shape similar to the rear view shape of the rear opening 36 and includes a rear wall portion 42 having an inverted U-shaped notch 41 that opens downward when viewed from the front-rear direction, a pair of left and right arc-shaped wall portions 43 that extend forward from both the left and right sides of the notch 41 at the bottom of the rear wall portion 42 and curve along the outer peripheral surfaces of both lower sides of the guide body 35a, and a pair of left and right flat wall portions 44 that extend forward from both sides of the upper part of the rear wall portion 42 above the left and right arc-shaped wall portions 43 and are formed along the outer surfaces of the left and right vertical wall portions 35b.

[0033] Furthermore, the cap member 40 includes a pair of left and right cap-side engaging portions 45 that extend forward from both the left and right sides of the upper end of the rear wall portion 42 and form guide grooves 45a into which the left and right protruding portions 38 are fitted; a cap-side locking piece 46 that extends forward from the upper end of the rear wall portion 42 between the left and right cap-side engaging portions 45 and, together with a locking projection 35d protruding from the upper surface of the erection wall portion 35c, constitutes a locking structure 46A for preventing the cap member 40 from falling off; and a rubber plug contact portion (plug contact portion) 47 that protrudes forward from the front surface of the rear wall portion 42 in a shape that avoids the notch 41, is inserted into the cable routing passage K1 from the rear opening 36 of the guide body 35a, and can abut against the rear end surface of the rubber plug 39.

[0034] The notch 41 is formed so as to avoid the rectangular area 39b where the multiple insertion holes 39a in the rubber stopper 39 are located, when the cap member 40 attached to the upper wiring guide 35 is viewed from the rear. At this time, the portion of the rear wall portion 42 along the upper inner circumference of the notch 41 (hereinafter referred to as the rear wall inner circumference portion) overlaps with the upper outer circumference portion of the rubber stopper 39. A rubber stopper contact portion 47, which is inverted U-shaped in rear view, extends forward from this rear wall inner circumference portion. The internal space spanning the notch 41 and the rubber stopper contact portion 47 extends vertically with a constant width from left to right, allowing multiple wires 77a to be easily inserted and removed in the vertical direction.

[0035] The cap member 40 has the effect of suppressing the bending of the wiring 77a near the rubber stopper 39 so as not to affect the sealing performance of the rubber stopper 39 when tension is applied in the bending direction due to the routing of the wiring 77a. Because the notch 41 through which the wiring 77a passes is in an inverted U shape, the cap member 40 cannot prevent the wiring 77a from bending downwards. However, the connecting portion 32 of the housing 90 is close to the lower part of the wiring 77a, and the downward bending of the wiring 77a is suppressed by the housing 90. Therefore, the influence of the rubber stopper 39 on the sealing performance of the wiring 77a is minimized in all directions.

[0036] <Assembly procedure for cap component 40> Next, the assembly procedure for the cap member 40 will be explained. The cap member 40 can be attached to the upper wiring guide 35 with the thermistor 77 already assembled to the housing 90. That is, when attaching the cap member 40 to the upper wiring guide 35, even if the wiring 77a has already been routed, the wiring 77a can be routed from the opening of the notch 41 of the cap member 40 to the center of the cap (the part located in the extension direction of the insertion part). With this configuration, compared to the case where the wiring insertion part of the cap member 40 is a hole shape, it is not necessary to pre-pass the wiring 77a through the wiring insertion part of the cap member 40, and the assembly of the cap member 40 can be made easier.

[0037] The left and right protrusions 38 of the upper wiring guide 35 serve as guides to prevent misalignment of the mounting position of the cap member 40, tilting in the left and right directions, and rotation around the guide body 35a. In particular, because the notch 41 opens downwards, there is a risk that the cap member 40 may float upwards even when the wiring 77a is inserted, but the left and right protrusions 38 and the left and right cap-side engaging parts 45 stably suppress the floating of the cap member 40. Even with the configuration in which the notch 41 opens downwards, the connecting part 32 and the pair of terminal holding parts 31 are close to the bottom of the cap member 40, and water ingress from below is suppressed by the connecting part 32 and the pair of terminal holding parts 31.

[0038] Furthermore, since a locking structure 46A for fixing the cap member 40 in the attached state is provided in the area sandwiched between the left and right protrusions 38 and the left and right cap-side engaging portions 45, the influence of the movement of the cap member 40 on the engaged state of the locking structure 46A is suppressed. Therefore, even with a single locking structure 46A, the cap member 40 can be stably fixed. Since the connecting portion 32 and the pair of terminal holding portions 31 are close to the lower part of the cap member 40 and the upper wiring guide 35, it is preferable not to provide a locking structure 46A below the cap member 40 and the upper wiring guide 35 in order to facilitate the molding of the housing 90.

[0039] <Effects and Actions> The charging inlet 1 according to this embodiment includes a housing 90 that holds a connection terminal 12 inside and has a detachable charging plug, a wiring component (thermistor 77) that is inserted into the housing 90 from outside the housing 90 through an upper wiring guide 35 formed on the outer surface (upper surface 32a) side of the outer wall portion (connecting portion 32) of the housing 90, a waterproof plug (rubber plug 39) that is inserted together with the wiring 77a of the thermistor 77 into the wiring passage K1 in the upper wiring guide 35 and seals the wiring passage K1, and an upper The wiring guide 35 is attached to an external opening 36 that opens to the outside of the housing 90, and includes a cap member 40 having a plug contact portion (rubber stopper contact portion) 47 that can contact a waterproof plug in the upper wiring guide 35 from the external opening 36 side. The cap member 40 has a U-shaped notch 41 that opens to the outer wall side in a second direction (up and down direction Z) that intersects with the outer surface (upper surface 32a) of the outer wall when viewed from a first direction (front-to-back direction Y) along the outer surface of the outer wall, and the wiring 77a is inserted into the notch 41.

[0040] In this configuration, in the charging inlet 1 where the wiring 77a of the thermistor 77 is arranged from the upper wiring guide 35 into the housing 90, the wiring passage K1 inside the upper wiring guide 35 is sealed watertight with a waterproof plug through which the wiring 77a is inserted, ensuring a tight seal inside the housing 90. The external opening 36 of the upper wiring guide 35 is sealed with a cap member 40, and the rubber stopper contact portion 47 of the cap member 40 presses against the waterproof plug inside the upper wiring guide 35, preventing the waterproof plug from falling out. Even if the wiring 77a is bent (vibrates), the force due to the bending is received by the notch 41 before the waterproof plug, so the force due to the bending of the wiring 77a is less likely to be applied to the waterproof plug, ensuring good waterproofing. The insertion point for the wiring 77a in the cap member 40 is a U-shaped notch 41 that opens towards the outer wall. With the wiring 77a assembled to the upper wiring guide 35, the cap member 40 is attached to the upper wiring guide 35 while inserting the wiring 77a into the notch 41. This configuration allows assembly without pre-inserting the wiring 77a, and eliminates the need to sandwich the wiring 77a in the cap member 40, thereby improving the ease of assembly of the charging inlet 1.

[0041] In the charging inlet 1 of the embodiment, the upper wiring guide 35 has a peripheral wall portion (vertical wall portion 35b) extending along the first direction, the external opening 36 has a projection portion 38 that protrudes outward from the peripheral wall portion in a third direction (left-right direction X) intersecting the second direction when viewed from the first direction, and the cap member 40 has a cap-side engaging portion 45 that engages with the projection portion 38.

[0042] In this configuration, the upper wiring guide 35 has a convex projection 38 in a third direction that intersects with the second direction (the direction spanning the U-shaped opening (lower end) and bottom (upper end) of the notch 41), and the cap-side engaging portion 45 engages with this projection 38, thereby restricting the movement of the cap member 40 in the second direction. This prevents the cap member 40 from floating up on the opposite side of the opening of the notch 41 and suppresses the cap member 40 from rotating around the wiring 77a, thereby enabling stable mounting of the cap member 40. Because the projection 38 is convex and protrudes in the third direction that intersects with the second direction, the upper wiring guide 35 is prevented from having a protruding shape (peak shape) outward in the second direction (outward from the housing 90), making it easier to mold the housing 90. In this embodiment, protrusions 38 are provided on both the left and right sides of the end (upper end) opposite to the open portion of the notch 41 in the external opening 36. However, the protrusions may be provided at any height in the vertical direction (second direction) rather than at the upper end. Furthermore, the protrusions are not limited to a pair on the left and right; they may be provided as a single unit or in groups of three or more.

[0043] In the charging inlet 1 of this embodiment, the upper wiring guide 35 is provided with a locking structure 46A (locking projection 35d) at the end opposite to the outer wall of the housing 90 in the second direction, which locks the cap member 40 and restricts its detachment in the first direction.

[0044] With this configuration, by providing a locking structure 46A for locking the cap member 40 at the end of the upper wiring guide 35 opposite to the outer wall portion of the housing 90 in the second direction (outside the housing 90), the molding of the locking structure 46A is easier compared to the case where the locking structure 46A is provided in a part close to the housing 90, and the manufacturing of the housing 90 can be made easier.

[0045] In the charging inlet 1 of this embodiment, the external opening 36 has a projection 38 at the end opposite to the outer wall portion of the housing 90 in the second direction, and the upper wiring guide 35 has a locking structure 46A (locking projection 35d) at the end opposite to the outer wall portion of the housing 90 in the second direction that locks the cap member 40 and restricts its detachment in the first direction.

[0046] With this configuration, a protrusion 38 that restricts the movement and rotation of the cap member 40 in the second direction and a locking structure 46A that restricts the detachment of the cap member 40 in the first direction are arranged together at the end of the upper wiring guide 35 opposite to the outer wall portion of the housing 90 (outside the housing 90) in the second direction. This makes it easy to mold the protrusion 38 and the locking structure 46A, and the protrusion 38 and the locking structure 46A work together to restrict the movement of the cap member 40, thereby simplifying the structure, for example, by requiring only one locking structure 46A.

[0047] In the above embodiment, an example was shown in which the present invention is applied to an upper wiring guide 35 provided on the upper part of the housing 90, but the present invention is not limited to this configuration. For example, the present invention may be applied to a wiring guide provided on the lower part or side of the housing 90. In this configuration, a protrusion 38 is provided on the upper wiring guide 35, and a cap-side engaging portion 45 forming a guide groove 45a is provided on the cap member 40, but the configuration is not limited to this. For example, a concave engaging portion may be provided on the upper wiring guide 35, and a convex engaging portion may be provided on the cap member 40. Furthermore, the configuration in the above embodiment is just one example of the present invention, and various modifications are possible without departing from the spirit of the invention, such as replacing the components of the embodiment with well-known components. [Explanation of Symbols]

[0048] 1 Charging Inlet 12 Connection terminals 32 Connecting part 32a top surface 35. Upper wiring guide (wiring guide) 35b Standing wall part (peripheral wall part) 35d Locking protrusion (locking structure) 36 External openings 38. Protruding part (guide-side engaging part) 39 Rubber stopper (waterproof plug) 40 Cap component 45 Cap-side engagement part 45a Guide groove 46A Locking structure 47 Rubber stopper contact area (plug contact area) 77 Thermistor (Wiring component) 77a Wiring 90 Housing K1 Cableway X Left / right direction Y (forward / backward direction) Z vertical direction

Claims

1. The charging plug is detachable and has a housing inside that holds the connection terminals, A wiring component is inserted into the housing from outside the housing through a wiring guide formed on the outer surface of the outer wall portion of the housing, A waterproof plug is inserted into the routing passage within the wiring guide together with the wiring components and seals the routing passage, The wiring guide includes a cap member that is attached to an external opening that opens to the outside of the housing and has a plug contact portion that can contact the waterproof plug inside the wiring guide from the external opening side, The cap member has a U-shaped notch that opens towards the outer wall portion in a second direction intersecting the outer surface of the outer wall portion when viewed from a first direction along the outer surface of the outer wall portion, and a charging inlet through which the wiring component is inserted.

2. The wiring guide has a peripheral wall portion extending along the first direction, The external opening has a guide-side engaging portion that, when viewed from the first direction, protrudes outward from the peripheral wall portion or is recessed inward from the peripheral wall portion in a third direction intersecting the second direction. The charging inlet according to claim 1, wherein the cap member has a cap-side engaging portion that engages with the guide-side engaging portion.

3. The charging inlet according to claim 1 or 2, wherein the wiring guide has a locking structure that locks the cap member to the end of the housing opposite to the outer wall portion in the second direction, thereby restricting its detachment in the first direction.

4. The external opening has the guide-side engaging portion at the end opposite to the outer wall portion of the housing in the second direction, The charging inlet according to claim 2, wherein the wiring guide has a locking structure that locks the cap member to the end of the housing opposite to the outer wall portion in the second direction, thereby restricting its detachment in the first direction.

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