Electrical junction boxes and wire harnesses

Abstract

To provide an electric connection box and a wiring harness, capable of improving waterproofness.SOLUTION: An electric connection box 1 comprises: a box main body 10; an outdoor side cover 30 that is assembled to the box main body 10; and a grommet 20. The grommet 20 includes a grommet body 21 which is formed in at least cylinder shape, and into which a wiring material W is inserted in a grommet side inner space 20a. The grommet body 21 includes: a cylinder part 40; and a water stop part 41 that is formed in an annular shape projected in a direction orthogonal to an insertion direction from one outer peripheral end of the insertion direction of the cylinder part 40, and is fitted to an insertion hole 14 to stop the insertion hole 14. The box main body 10 includes a waterproof wall 16 that is projected toward a box side inner space 10a from an inner wall surface 15a of an open wall 15, and is formed along a box side notch part 13 when viewing the box side notch part 13 from the box side inner space 10a in the inspection direction.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an electrical junction box and a wire harness. [Background technology]

[0002] Conventionally, a connector box is a type of electrical connection box mounted on a vehicle, and is attached, for example, to a mounting panel separating the interior and exterior of the vehicle. The connector box includes, for example, a box body, a grommet, a grommet inner, and an upper cover. For example, Patent Document 1 describes a waterproof grommet mounting structure in which one cover has an opening, a waterproof grommet for inserting electric wires is fitted into the opening, and one cover is joined to the other cover to form a box body, with the other cover abutting an end of the waterproof grommet. In this way, connector boxes typically have a waterproof structure that prevents water from entering from the outside. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-129545 Summary of the Invention [Problem to be solved by the invention]

[0004] In connector boxes, waterproof structures are employed at the mating portions between the box body and upper cover and the grommet, but if water infiltrates the inside of the box body, it is drained through the through-holes in the grommet for inserting the electric wires. However, due to the structure of the conventional box body and upper cover, water that infiltrates the inside of the box body may not move toward the through-holes in the grommet for inserting the electric wires, but may instead move to the side of the box body opposite the grommet, leaving room for improvement in terms of waterproofing.

[0005] The present invention has been made in view of the above-mentioned problems, and has an object to provide an electrical junction box that can improve waterproofing. [Means for solving the problem]

[0006] In order to achieve the above object, the electrical junction box according to the present invention includes a main body formed in a box shape and accommodating electrical components in a box-side internal space; an opening formed at one end of the main body in an assembly direction and connecting the box-side internal space with the outside in the assembly direction; and a connecting wall formed at the opening and connecting the box-side internal space with the outside perpendicular to the assembly direction. and along the vertical direction a box body having a box-side cutout portion communicating in an insertion direction; a cover that closes the opening when assembled to the box body in the assembly direction and faces the box-side cutout portion in the assembly direction to form an insertion hole with the box body that penetrates along the insertion direction; and a grommet that fits into the insertion hole to make the insertion hole waterproof and through which a wiring material connected to the electrical component housed inside the box body is inserted along the insertion direction, the grommet comprising at least a cylindrical The box body has a grommet body formed in a shape such that the wiring material is inserted into the grommet-side internal space, the grommet body having a tubular portion and a water-stop portion formed in an annular shape and protruding from one outer peripheral end of the tubular portion in the insertion direction in a direction perpendicular to the insertion direction, and fitting into the insertion hole to make the insertion hole waterproof, and the box body has a waterproof wall protruding from the inner wall surface of the opening wall toward the box-side internal space, and formed along the box-side cutout portion when the box-side cutout portion is viewed from the box-side internal space side in the insertion direction.

[0007] In order to achieve the above object, a wire harness according to the present invention includes a conductive wiring material and an electric junction box electrically connected to the wiring material, the wire harness including a main body formed in a box shape and accommodating electrical components in a box-side internal space, an opening formed at one end in an assembly direction of the main body and communicating the box-side internal space with the outside in the assembly direction, and a connecting member formed in an opening wall constituting the opening and connecting the box-side internal space with the outside in a direction perpendicular to the assembly direction. and along the vertical direction a box body having a box-side cutout portion communicating in an insertion direction; a cover that closes the opening when assembled to the box body in the assembly direction and faces the box-side cutout portion in the assembly direction to form an insertion hole with the box body that penetrates along the insertion direction; and a grommet that fits into the insertion hole to make the insertion hole waterproof and through which a wiring material connected to the electrical component housed inside the box body is inserted along the insertion direction, the grommet comprising at least a cylindrical The box body has a grommet body formed in a shape such that the wiring material is inserted into the grommet-side internal space, the grommet body having a tubular portion and a water-stop portion formed in an annular shape and protruding from one outer peripheral end of the tubular portion in the insertion direction in a direction perpendicular to the insertion direction, and fitting into the insertion hole to make the insertion hole waterproof, and the box body has a waterproof wall protruding from the inner wall surface of the opening wall toward the box-side internal space, and formed along the box-side cutout portion when the box-side cutout portion is viewed from the box-side internal space side in the insertion direction. [Effects of the Invention]

[0008] The electrical junction box and the wire harness according to the present invention have the effect of improving waterproofing. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of an electrical junction box according to an embodiment. [Figure 2]FIG. 2 is an exploded perspective view of the electrical junction box according to the embodiment. [Figure 3] FIG. 3 is a partial perspective view of the electrical junction box according to the embodiment. [Figure 4] FIG. 4 is an exploded perspective view of the grommet according to the embodiment. [Figure 5] FIG. 5 is a partial perspective view of a main body of the electrical junction box according to the embodiment. [Figure 6] FIG. 6 is a partial vertical cross-sectional view of the electrical junction box according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of an electrical junction box and a wire harness according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments described below. Furthermore, the components in the following embodiments include those that are easily replaceable by a person skilled in the art, or those that are substantially the same.

[0011] [Embodiment] The electrical junction box 1 shown in Figures 1 and 2 is mounted on a vehicle such as an automobile and incorporated into a wire harness WH. The wiring material W in Figure 1 is indicated by a two-dot chain line, and is omitted in Figure 2. The wire harness WH is, for example, a collection of multiple wiring materials W used for power supply and signal communication to connect various devices mounted on a vehicle, and the multiple wiring materials W are connected to the devices using connectors or the like. The wire harness WH includes a conductive wiring material W and an electrical junction box 1 attached to the wiring material W to protect the wiring material W. The wiring material W is, for example, composed of a flexible electric wire, a wire bundle, or the like. The electric wire is a conductor portion (core wire) made of multiple conductive metal wires, the outside of which is covered with an insulating coating. The wire bundle is a bundle of such electric wires. The wire harness WH may further include a protector, an exterior material, a fixing device, or the like.

[0012] Here, the X direction shown in the figure is the assembly direction of the electrical junction box 1 in this embodiment. The Y direction is the width direction of the electrical junction box 1 in this embodiment, and is a direction perpendicular to the X direction. The Z direction is the insertion direction of the electrical junction box 1 in this embodiment, and is a direction perpendicular to the X and Y directions. The insertion direction is along the vertical direction. In particular, of the X directions, the X1 direction is the outdoor direction, and the X2 direction is the indoor direction. Furthermore, of the Z directions, the Z1 direction is the upward direction, and the Z2 direction is the downward direction. Unless otherwise specified, the directions used in the following explanation are the directions when the various parts of the electrical junction box 1 are assembled.

[0013] The electrical junction box 1 is, for example, a connector box that aggregates and connects multiple connectors provided at the ends of a wiring material W of a wire harness WH to connectors of various devices in a vehicle. The electrical junction box 1, when assembled to the wire harness WH, is inserted and fixed into a panel through-hole 101 formed in a mounting panel 100 that separates an exterior space (e.g., an engine compartment) from an interior space (e.g., a cabin) of a vehicle (not shown). The mounting panel 100 is formed, for example, from a metal flat plate and forms the body of the vehicle. The mounting panel 100 has a panel front surface 100a facing the exterior, a panel back surface 100b facing the interior, and a panel through-hole 101 and four bolt through-holes 102 that penetrate from the panel front surface 100a to the panel back surface 100b. The electrical junction box 1 is fixed to the mounting panel 100 with a portion thereof inserted into the panel through-hole 101. As shown in FIGS. 1 and 2, the electrical junction box 1 includes a box body 10, a grommet 20, an exterior cover 30, and an interior cover 31.

[0014] The box body 10 accommodates an electrical component D and a portion of a wiring material W connected to the electrical component D. The electrical component D is, for example, an electronic component such as a connector, fuse, relay, branch, or electronic control unit that is incorporated into a wire harness WH and constitutes a connection processing component for the wiring material W, etc. The box body 10 has multiple compartments inside, and an electrical component D is disposed in each compartment. The box body 10 is formed from an insulating synthetic resin or the like. The box body 10 includes a main body 11, openings 12 and 17, a box-side cutout 13, an opening wall 15, and a waterproof wall 16.

[0015] The main body 11 is formed in a box shape and accommodates electrical components D in a box-side internal space 10a formed therein. The main body 11 is provided with holding portions for holding each of the electrical components D in the box-side internal space 10a. The main body 11 accommodates the electrical components D in the box-side internal space 10a with the electrical components D held by the holding portions.

[0016] The opening 12 is formed at one end (toward the outside of the room) in the assembly direction of the main body 11, and connects the box-side internal space 10a to the outside in the assembly direction. The opening 12 is formed by an opening wall 15. The opening 12 is formed in a rectangular shape when viewed from the assembly direction. The opening 17 is formed at the other end (toward the inside of the room) in the assembly direction of the main body 11, and connects the box-side internal space 10a to the outside in the assembly direction.

[0017] As shown in Figures 2, 3, and 5, the box-side cutout 13 is formed in the opening wall 15 of the main body 11 that constitutes the opening 12, and connects the box-side internal space 10a with the outside in the insertion direction. The box-side cutout 13 is formed in a portion of the opening wall 15 that is located on one side (downward) in the insertion direction, and a grommet 20 is fitted into the box-side cutout 13. When viewed from the insertion direction, the box-side cutout 13 is recessed from an end face of the opening wall 15 on one side in the assembly direction (toward the outside of the room) toward the other side in the assembly direction (toward the inside of the room). The box-side cutout 13 has a cutout surface 13a and a recess 13b.

[0018] Cutout surface 13a constitutes box-side cutout portion 13 in opening wall 15. When box-side cutout portion 13 is viewed from one side of the assembly direction (the outside direction), cutout surface 13a is composed of cutout surface 131 facing one side of the assembly direction (the outside direction) and a pair of cutout surfaces 132 facing each other in the width direction with cutout surface 131 in between.

[0019] The recesses 13b are formed so as to recess from the cutout surface 13a into the opening wall 15. The recesses 13b are provided on each of the cutout surfaces 131, 132, and each recess 13b is formed continuously along the cutout surfaces 131, 132. The bottom surface of the recesses 13b has an uneven shape that matches the outer peripheral shape of the water stopping portion 41 of the grommet 20. The water stopping portion 41 of the grommet 20 is fitted into the recesses 13b in an assembled state in which the exterior cover 30 is assembled to the box body 10 in the assembly direction. This assembled state includes an accommodated state in which a grommet inner 22, which will be described later, is accommodated in the grommet-side internal space 20a.

[0020] Furthermore, in an assembled state in which the outdoor cover 30 is assembled to the box body 10 in the assembly direction, the box-side cutout 13 and the outdoor cover 30 face each other in the assembly direction, thereby forming an insertion hole 14 that penetrates along the insertion direction. The insertion hole 14 is waterproofed by fitting a part of the grommet 20 into it. When viewed from the insertion direction, the insertion hole 14 is formed in a substantially oval shape whose width is longer than its length in the assembly direction.

[0021] As shown in FIGS. 3 and 5 , the waterproof wall 16 protrudes from the inner wall surface 15a of the opening wall 15 toward the box-side internal space 10a and is formed along the box-side cutout 13 when viewed from the box-side internal space 10a in the insertion direction of the box-side cutout 13. When the outdoor cover 30 is assembled to the box body 10 in the assembly direction, the waterproof wall 16 faces a protruding portion 50 of a grommet inner 22 housed in a grommet 20 (described later) along the extending direction of the protruding portion 50. The upward length (height) of the waterproof wall 16 is the length (height) upward from an end face 41a on one side (upper direction) in the insertion direction of a water-stopping portion 41 (described later) when the outdoor cover 30 is assembled to the box body 10 in the assembly direction. The upward length of the waterproof wall 16 is formed to be longer (higher) than the upward length (height) from the end face 41a of the protruding portion 50. In an assembled state in which the outdoor cover 30 is assembled to the box body 10 in the assembly direction, both widthwise ends of the waterproof wall 16 abut against the outdoor cover 30 in the assembly direction.

[0022] 2, the grommet 20 fits into the insertion hole 14 to waterproof the insertion hole 14, and a wiring material W connected to an electrical component D housed inside the box body 10 is inserted in the insertion direction through the grommet 20. The grommet 20 has a grommet body 21 and a grommet inner 22.

[0023] The grommet body 21 is formed at least in a cylindrical shape, and the wiring material W is inserted into the grommet-side internal space 20a. The grommet body 21 is formed of an insulating elastic resin material (e.g., ethylene-propylene-diene rubber (EPDM)) that has low rigidity and high flexibility, such as rubber or a thermoplastic elastomer. As shown in Fig. 4, the grommet body 21 has a cylindrical portion 40 and a waterproof portion 41, which are integrally formed as an elastic body.

[0024] The cylindrical portion 40 is a portion extending from the watertight portion 41 toward the other side of the insertion direction (downward). The cylindrical portion 40 is formed integrally with the watertight portion 41 and is formed in a generally cylindrical shape with both ends in the insertion direction being open. When viewed from the insertion direction, the cylindrical portion 40 has an opening that is generally oval in shape with a widthwise length that is longer than the length in the assembly direction.

[0025] The water stop portion 41 is formed in an annular shape and protrudes from one outer peripheral end (upper direction) of the tubular portion 40 in a direction perpendicular to the insertion direction, and fits into the insertion hole 14 to seal off the water in the insertion hole 14. When viewed from the insertion direction, the water stop portion 41 is formed in a substantially elliptical shape whose width is longer than its length in the assembly direction. When the exterior cover 30 is assembled to the box body 10 in the assembly direction, the water stop portion 41 has a portion on the end face 41a of the grommet 20 that is surrounded by the waterproof wall 16 and the protrusion 50.

[0026] The grommet inner 22 is formed in a ring shape around the insertion direction and is housed in the grommet-side internal space 20a. The grommet inner 22 is made of a hard synthetic resin material with insulating properties, is harder than the water-stopping part 41, and is attached to the inner surface of the water-stopping part 41 with the wiring material W inserted inside. When viewed from the insertion direction, the grommet inner 22 is formed in a substantially elliptical shape whose width is longer than its length in the assembly direction. The grommet inner 22 has a protrusion 50 and a grommet-side cutout 51.

[0027] In a state where the grommet inner 22 is accommodated in the grommet-side internal space 20a, i.e., in the assembled state described above, the protruding portion 50 protrudes further in the insertion direction (upward) than the outer peripheral end on one side in the insertion direction (upward) of the tubular portion 40. In an assembled state where the exterior cover 30 is assembled to the box body 10 in the assembly direction, a portion of the protruding portion 50 is formed along the box-side cutout portion 13 when viewed from the box-side internal space 10a side (upper side) in the insertion direction.

[0028] As shown in Figures 3 and 4, the grommet-side cutout 51 is formed at one end (upper direction) of the protrusion 50 in the insertion direction, and connects the outside and the inside. The outside here refers to the grommet-side internal space 20a that communicates with the outside, and the inside refers to the space in the box-side internal space 10a that is sandwiched between the waterproof wall 16 and the protrusion 50. The bottom surface on the other side (lower direction) in the insertion direction of the grommet-side cutout 51 is located at the same height in the insertion direction as the end surface 41a of the grommet 20 in the assembled state in which the outdoor cover 30 is assembled to the box body 10 in the assembly direction. The grommet-side cutout 51 is formed in a portion of the protrusion 50 that faces the waterproof wall 16 in a direction perpendicular to the insertion direction in the assembled state in which the outdoor cover 30 is assembled to the box body 10 in the assembly direction. The grommet-side notches 51 are provided, for example, at two locations on the annular projection 50, in a portion located on the indoor side in the assembly direction.

[0029] As shown in Figures 1 and 2, the outdoor cover 30 closes the opening 12 of the main body 11 of the box body 10 in an assembled state in which the outdoor cover 30 is assembled to the box body 10 in the assembly direction. Furthermore, in an assembled state in which the outdoor cover 30 is assembled to the box body 10 in the assembly direction, the outdoor cover 30 faces the box-side cutout 13 in the assembly direction, thereby forming an insertion hole 14 that penetrates along the insertion direction with the box body 10. The outdoor cover 30 is formed in a tray shape from insulating synthetic resin or the like. In an assembled state in which the outdoor cover 30 is assembled to the box body 10 in the assembly direction, the outdoor cover 30 is located on one side of the box body 10 in the assembly direction (toward the outside of the room), and is fastened to the box body 10 by a fastening mechanism.

[0030] 1, the indoor cover 31 closes the opening 17 of the main body 11 of the box body 10 in an assembled state in which the indoor cover 31 is assembled to the box body 10 in the assembly direction. The indoor cover 31 is formed in a tray shape from an insulating synthetic resin or the like. In an assembled state in which the indoor cover 31 is assembled to the box body 10 in the assembly direction, the indoor cover 31 is located on the other side of the assembly direction of the box body 10 (toward the room), and is detachably locked to the box body 10 by a locking mechanism.

[0031] Next, the assembly work of the electrical junction box 1 will be described with reference to Figures 1 and 2. The grommet 20 is assumed to be in an assembled state in which the grommet inner 22 is housed in the grommet-side internal space 20a in advance, and one or more wiring materials W connected to the electrical components D are inserted into the grommet-side internal space 20a.

[0032] The worker attaches the box body 10 to the mounting panel 100 from the panel back surface 101b side. The worker inserts the opening wall 15 of the box body 10 into the panel through-hole 101 of the mounting panel 100, while inserting each stud bolt 18 into each bolt through-hole 102, and pushes the box body 10 in one of the assembly directions (toward the outside of the room) to lock the locking portion provided on the box body 10 into the panel through-hole 101.

[0033] Next, the worker attaches the grommet 20 to the box body 10 attached to the mounting panel 100 from the panel surface 101a side. The worker fits the watertight portion 41 of the grommet 20 into the box-side cutout portion 13 of the box body 10. At this time, the worker assembles the electrical component D into the holding portion inside the box body 10. Next, the worker attaches the exterior cover 30 to the box body 10 from the panel surface 101a side and fastens by screwing nuts onto each stud bolt 18. The worker attaches the interior cover 31 to the box body 10 from the panel back surface 101b side, completing the work.

[0034] As described above, the electrical junction box 1 according to this embodiment includes the box body 10, the exterior cover 30 attached to the box body 10, and the grommet 20. The grommet 20 has at least a cylindrical grommet body 21 through which the wiring material W is inserted into the grommet-side internal space 20a. The grommet body 21 has a cylindrical portion 40 and a water-stopping portion 41 formed in an annular shape and protruding from one outer peripheral end of the cylindrical portion 40 in a direction perpendicular to the insertion direction, and fitting into the insertion hole 14 to seal the insertion hole 14. The box body 10 has a waterproof wall 16 that protrudes from the inner wall surface 15a of the opening wall 15 toward the box-side internal space 10a and is formed along the box-side cutout portion 13 when viewed from the box-side internal space 10a side in the insertion direction.

[0035] With the above configuration, when viewed from the insertion direction, the waterproof wall 16 blocks the flow path of water that has entered the inside of the box body 10 toward the opposite side of the grommet 20, i.e., toward the inside of the vehicle cabin, and the water that has entered the inside can be actively drained to the outside through the grommet-side internal space 20a, thereby improving the waterproofing and drainage properties of the electrical junction box 1. Furthermore, by not adding any parts to conventional electrical junction boxes and by simplifying the part shapes, it is possible to suppress increases in costs.

[0036] Furthermore, in the electrical junction box 1 according to this embodiment, the box-side cutout portion 13 has a recess 13b formed so as to be recessed from the cutout surface 13a into the opening wall 15, and in the assembled state, the watertight portion 41 on the grommet 20 side is fitted into the recess 13b. This makes it possible to restrict movement of the grommet 20 in the insertion direction relative to the box body 10 and the outdoor cover 30 in the assembled state.

[0037] Furthermore, the electrical junction box 1 according to this embodiment has a grommet inner 22 that accommodates the grommet 20 in the grommet-side internal space 20a. The grommet inner 22 has a grommet-side notch 51 that is formed at one end in the insertion direction of the protrusion 50 and that connects the outside and the inside when the grommet inner 22 is accommodated in the grommet-side internal space 20a. This allows water that has entered the space in the box-side internal space 10a between the waterproof wall 16 and the protrusion 50 to be guided into the grommet-side internal space 20a via the grommet-side notch 51 without stagnating, thereby improving the drainage performance of the electrical junction box 1.

[0038] The wire harness WH includes a conductive wiring material W and an electric junction box 1 electrically connected to the wiring material W, and has the same effect as the electric junction box 1 described above.

[0039] In the above embodiment, the grommet-side cutouts 51 are provided in two locations on the annular projection 50, in a portion located on the interior side of the assembly direction, but this is not limited to this. For example, the grommet-side cutouts 51 may be provided at any position on the annular projection 50, and the number of locations is not limited to two.

[0040] In the above embodiment, the electrical connection box 1 is described as a connector box, but is not limited to this and may be, for example, a junction box, a fuse box, a relay box, or the like. [Explanation of symbols]

[0041] 1 Electrical junction box 10 Box body 10a Box side internal space 11 Main body 12 Opening 13 Box side cutout 14 Insertion hole 15 Opening wall 15a Inner wall 16 waterproof wall 20 Grommets 20a Grommet side internal space 21 Grommet body 22 Grommet inner 30 Outdoor cover 40 Cylindrical part 41 Watertight section D Electrical parts W Routing material WH Wire Harness

Claims

1. a box body having a main body formed in a box shape and accommodating electrical components in a box-side internal space; an opening formed at one end in an assembly direction of the main body, the opening communicating the box-side internal space with the outside in the assembly direction; and a box-side cutout formed in an opening wall constituting the opening, the box-side internal space communicating with the outside in an insertion direction perpendicular to the assembly direction and along a vertical direction; a cover that closes the opening when assembled to the box body in the assembly direction and faces the box-side cutout portion in the assembly direction to form, with the box body, an insertion hole that penetrates along the insertion direction; a grommet that fits into the insertion hole to waterproof the insertion hole and through which a wiring material connected to the electrical component housed inside the box body is inserted along the insertion direction, The grommet is The grommet body has at least a cylindrical shape and has an internal space on the grommet side through which the wiring material is inserted, The grommet body is A cylindrical portion; a water-stopping portion that is formed in an annular shape and protrudes from one outer peripheral end of the tubular portion in the insertion direction in a direction perpendicular to the insertion direction, and that fits into the insertion hole to stop water from entering the insertion hole, The box body includes: a waterproof wall protruding from an inner wall surface of the opening wall toward the box-side internal space and formed along the box-side cutout portion when viewed from the box-side internal space portion side in the insertion direction of the box-side cutout portion; An electrical junction box characterized by:

2. The box-side cutout portion is A cutout surface of the opening wall that constitutes the box-side cutout portion; a recess formed so as to be recessed from the cutout surface into the opening wall, The recessed portion is In the assembled state, the water stopping portion is fitted.

2. The electrical junction box according to claim 1.

3. The grommet is a grommet inner formed in an annular shape around the insertion direction and accommodated in the grommet-side internal space; The grommet inner is When the grommet inner is housed in the grommet-side internal space, the grommet inner has a protruding portion that protrudes further toward one side in the insertion direction than one outer peripheral end of the cylindrical portion in the insertion direction, The protrusion is a grommet-side notch formed at one end in the insertion direction and communicating the outside and the inside; 3. The electrical junction box according to claim 1 or 2.

4. A conductive wiring material; an electrical connection box electrically connected to the wiring material, The electrical connection box comprises: a box body having a main body formed in a box shape and accommodating electrical components in a box-side internal space; an opening formed at one end in an assembly direction of the main body, the opening communicating the box-side internal space with the outside in the assembly direction; and a box-side cutout formed in an opening wall constituting the opening, the box-side internal space communicating with the outside in an insertion direction perpendicular to the assembly direction and along a vertical direction; a cover that closes the opening when assembled to the box body in the assembly direction and faces the box-side cutout portion in the assembly direction to form, with the box body, an insertion hole that penetrates along the insertion direction; a grommet that fits into the insertion hole to waterproof the insertion hole and through which a wiring material connected to the electrical component housed inside the box body is inserted along the insertion direction, The grommet is The grommet body has at least a cylindrical shape and has an internal space on the grommet side through which the wiring material is inserted, The grommet body is A cylindrical portion; a water-stopping portion that is formed in an annular shape and protrudes from one outer peripheral end of the tubular portion in the insertion direction in a direction perpendicular to the insertion direction, and that fits into the insertion hole to stop water from entering the insertion hole, The box body includes: a waterproof wall protruding from an inner wall surface of the opening wall toward the box-side internal space and formed along the box-side cutout portion when viewed from the box-side internal space portion side in the insertion direction of the box-side cutout portion; A wire harness characterized by:

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