JP6469510B2 - Electrical junction box and wire harness - Google Patents

Description

  The present invention relates to an electrical junction box and a wire harness.

  A vehicle such as an automobile is equipped with an electrical junction box that distributes power from a power source such as a battery to each electronic device. As this type of electrical connection box, a box body in which various electronic components are assembled and a wire through hole through which an electric wire electrically connected to the electronic components assembled in the box body is provided are used. This type of electrical junction box is provided with an electric wire through hole in at least one of the first casing and the second casing that are stacked in the vertical direction to form the box body.

JP 2000-236611 A JP 2008-92765 A JP 2006-149069 A

  By the way, the electrical junction box described in the above-mentioned Patent Documents 1 to 3 is provided with a second through-hole in which the wire through hole is arranged on the lower side in the vertical direction, and liquid such as water enters the box body through the wire through hole. There is a case where a cover portion that suppresses this is provided in the first housing. In this case, a guide portion that guides the cover portion is provided on both sides of the wire passage hole of the second housing, the cover portion is guided by the guide portion, and the first housing and the second housing can be variously used. Assemble with the locking structure. However, the electrical connection box is desired to have a configuration in which, for example, the first housing and the second housing are not assembled by the locking mechanism in a state where the cover portion is detached from the guide portion.

  This invention is made | formed in view of said situation, Comprising: In the state which the cover part which suppresses that a liquid penetrate | invades into an electric wire through-hole remove | deviated from the guide part, it suppresses that a housing | casing is assembled | attached. It is an object to provide an electrical junction box and a wire harness that can be used.

  In order to achieve the above object, an electrical junction box according to the present invention includes a first casing in which electronic components are assembled, a second casing attached to the lower side in the vertical direction of the first casing, An electric wire through hole for passing an electric wire provided in at least one of the first casing and the second casing and electrically connected to the electronic component; and provided in the first casing And a cover portion that prevents liquid from entering through the wire passage hole, the second housing, and the second housing is assembled to the first housing when the second housing is assembled. A guide portion that guides the cover portion in the vertical direction with respect to the second casing, and a locking portion provided in the second casing and locked in the locking portion provided in the first casing. A locking portion for assembling the second casing to the first casing, and the second casing from the guide section. Protrudes outwardly of, and the locking portion and the cover portion rides is characterized in that it comprises a a regulating projection for regulating the be locked to the engaged portion.

  Moreover, in the said electrical junction box, the said guide part and the said latching | locking part shall be provided in the vicinity of the corner | angular part of a said 2nd housing | casing.

  In the electrical junction box, the amount of protrusion of the restricting protrusion from the guide portion is greater than that of the locked portion when the second housing is assembled to the first housing. It can be greater than the amount by which the locking portion can move in the direction perpendicular to the vertical direction.

  In the electrical junction box, the guide portion is provided at each position sandwiching the wire passage hole, and the restriction projection protrudes from the guide portion to the outside of the second housing. it can.

  In order to achieve the above object, a wire harness according to the present invention includes a first housing in which an electronic component is assembled, a second housing assembled in a vertically lower side of the first housing, An electric wire through hole for passing an electric wire provided in at least one of the first casing and the second casing and electrically connected to the electronic component; and provided in the first casing. And an electrical connection box provided with a cover portion that suppresses liquid from entering through the wire passage hole, and the electric wire, and the electrical connection box is provided at a corner of the second casing. A guide portion that is provided in the vicinity and guides the cover portion in a vertical direction with respect to the second housing when the second housing is assembled to the first housing; A locked portion provided in the vicinity of the corner of the housing and provided in the first housing A locking portion for stopping and assembling the second housing to the first housing, and protruding from the guide portion to the outside of the second housing, and when the cover portion rides on, the locking portion is And a restricting protrusion for restricting locking to the locked portion.

  The electrical junction box according to the present invention includes a guide portion that guides and positions the cover portion, and a locking portion that locks the locked portion of the first housing in the vicinity of the corner portion of the second housing. Provided. Further, the electrical junction box includes a regulation protrusion that protrudes outward from the guide portion and suppresses the locking portion from being locked to the locked portion when the cover portion rides on. As a result, since the electrical connection box is provided with the guide portion and the locking portion in the vicinity of the corner portion of the second casing, the guide portion and the locking portion are deformed even if the second casing is deformed. The relative positional relationship between and is difficult to change. Furthermore, since the electrical connection box protrudes outward from the guide portion and the cover portion rides on, the positional relationship between the guide portion and the locking portion hardly changes even if the second housing is deformed. The stopping portion remains locked to the locked portion. As a result, the electrical connection box can restrict the locking portion from being locked to the locked portion in a state where the cover portion into which the liquid enters the wire passage hole is removed from the guide portion, and the housings are assembled together. There is an effect that it can be suppressed.

FIG. 1 is an exploded perspective view illustrating a schematic configuration of an electrical junction box according to the embodiment. FIG. 2 is a perspective view illustrating a schematic configuration in the vicinity of the cover portion and the locking mechanism of the electrical junction box according to the embodiment. 3 is a cross-sectional view taken along line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a perspective view illustrating a schematic configuration in a state where the cover portion of the electrical junction box according to the embodiment rides on the regulation protrusion. FIG. 6 is a perspective view illustrating a schematic configuration in the vicinity of the cover portion and the locking mechanism of the electrical junction box according to the modified example of the embodiment. FIG. 7 is a sectional view taken along line VII-VII in FIG.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

[Embodiment]
FIG. 1 is an exploded perspective view illustrating a schematic configuration of an electrical junction box according to the embodiment. FIG. 2 is a perspective view illustrating a schematic configuration in the vicinity of the cover portion and the locking mechanism of the electrical junction box according to the embodiment. 3 is a cross-sectional view taken along line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a perspective view illustrating a schematic configuration in a state where the cover portion of the electrical junction box according to the embodiment rides on the regulation protrusion. In addition, FIG. 1 has shown the electronic component of the electrical junction box with the dashed-two dotted line.

  The electric junction box 1 shown in FIG. 1 according to the present embodiment is mounted on a vehicle such as an automobile, and various types of electric power supplied from a power source such as a battery are mounted on the vehicle via various electronic components 2 and the like. To be distributed to electronic devices. Here, as shown in FIG. 1, the electrical junction box 1 is incorporated in a wire harness 150 and is an electrical component such as a connector, a fuse, a relay, a branching unit, or an electronic control unit that constitutes a connection processing component such as an electric wire 151. Are collected and housed inside. The electrical junction box 1 is installed, for example, in an engine room of a vehicle or a lower part of a vehicle body, and is connected between a power source such as a battery and various electronic devices mounted in the vehicle. The electrical connection box 1 may be called a junction box, a fuse box, a relay box, or the like. In the present embodiment, these are collectively called an electrical connection box.

  In the electrical junction box 1 illustrated in FIG. 1, various electronic components 2 are accommodated in an accommodation space inside the box body 3. The box body 3 includes, for example, a body 10 (corresponding to a first housing), an upper cover 20, a lower cover 30 (corresponding to a second housing), and the like. The box body 3 has a three-layer divided structure in which the body 10, the upper cover 20, and the lower cover 30 are divided. The body 10, the upper cover 20, and the lower cover 30 are formed of an insulating synthetic resin. The body 10 is a main member that forms a housing space in which the electronic component 2 is assembled. The body 10 is formed in a substantially square-shaped cylinder, and the opening is located on the upper side in the vertical direction and the lower side in the vertical direction in a state where the electric connection box 1 is connected to the engine room or the like. In the present embodiment, the body 10 includes four flat outer walls 11 and four corners 12 provided between the outer walls 11 and is formed in a rectangular tube shape. The upper cover 20 is a lid-like member that closes the opening on the upper side in the vertical direction of the body 10. The lower cover 30 is a dish-shaped (tray-shaped) member that is attached to the body 10 and closes the opening on the lower side in the vertical direction of the body 10. In the present embodiment, the lower cover 30 includes a flat bottom wall 31 disposed on the lower side in the vertical direction, four flat outer walls 32 erected from the outer edge of the bottom wall 31, and four provided between the outer walls 32. It has two corners 33 and the like, and is formed in a flat tray shape whose lower side in the vertical direction is closed by the bottom wall 31.

  The box body 3 is configured so that the opening on the upper side in the vertical direction of the body 10 and the opening on the upper cover 20 face each other, and the opening on the lower side in the vertical direction on the body 10 and the opening on the lower cover 30 face each other. The lower cover 30 is assembled to the lower side of the body 10 in the vertical direction. In the box body 3, the upper cover 20 and the lower cover 30 are locked to the body 10 via various types of locking mechanisms 60. The direction in which the body 10, the upper cover 20, and the lower cover 30 are stacked is typically along the vertical direction in a state where the electrical connection box 1 is connected to an engine room or the like. Depending on the installation state of the junction box 1, the stacking direction may be installed at a predetermined angle with respect to the vertical direction.

  And as above-mentioned as various electronic components 2 assembled | attached to the accommodation space part inside this box main body 3, a connector, a fuse, a relay, a branch part, an electronic control unit, etc. are contained. The electric junction box 1 has various cavities formed by a plurality of cavities formed by partition walls 13 having various shapes formed integrally with the body 10, blocks 14 having various shapes removably assembled to the body 10, and the like. The electronic component 2 is assembled. In this case, the partition wall 13, the block 14 and the like are also formed of an insulating synthetic resin, like the body 10 and the like. The electrical connection box 1 has a terminal or the like of the electric wire 151 that is routed through the electric wire through hole 40 and connected to the electronic component 2 with respect to the cavity in which various electronic components 2 are assembled. It is fitted and electrically connected from the side. That is, the electrical junction box 1 includes an electric wire passage hole 40 through which the electric wire 151 electrically connected to the electronic component 2 is passed. The electrical connection box 1 is mounted on a vehicle with a fixed bracket portion 15 provided on the body 10 or the like fixed to the vehicle body. The electrical junction box 1 constitutes an electric wire 151 and the like that are electrically connected to the electronic component 2 and a wire harness 150 that is routed in a vehicle such as an automobile. That is, the wire harness 150 includes the electrical junction box 1 and a plurality of electric wires 151 that are electrically connected to the electronic component 2 of the electrical junction box 1.

  In the present embodiment, the electric wire passage hole 40 through which the electric wire 151 passes is provided in the lower cover 30. Specifically, the electric wire passage hole 40 is provided across one outer wall 32 (hereinafter, indicated by reference numeral 32 a) on the near side in FIGS. 1 and 2 and the bottom wall 31 among the plurality of outer walls 32. . The electric wire passing hole 40 penetrates the vicinity of one corner 33 (hereinafter, indicated by reference numeral 33a) on the front side of the outer wall 32a in FIGS. 1 and 2 and the vicinity of the outer wall 32a of the bottom wall 31. Hereinafter, the vertical direction, the vertical direction upper side, the vertical direction lower side, the vertical direction upper end portion, and the vertical direction lower end portion referred to in the present specification are states in which the electrical junction box 1 is fixed to the vehicle body and mounted on the vehicle. The vertical direction, the upper side in the vertical direction, the lower side in the vertical direction, the upper end portion in the vertical direction, and the lower end portion in the vertical direction. In the following description, the vicinity of the corners 33 and 33a of the outer walls 32 and 32a is less than ½ of the width in the width direction perpendicular to the vertical direction of the outer walls 32 and 32a from the corners 33 and 33a. The range. In short, the vicinity of the corners 33 and 33a of the outer walls 32 and 32a means a position that is difficult to deform except for the center in the width direction of the outer walls 32 and 32a, and the deformable amount of the outer wall 11 that overlaps in the vertical direction is described later. The range below the protrusion amount E of the protrusion 80 is said.

  The body 10 constituting the box body 3 is integrally provided with a cover portion 50 that prevents liquid such as water from entering the box body 3 through the electric wire through hole 40. That is, the electrical junction box 1 includes a cover portion 50 provided on the body 10. The cover portion 50 extends downward in the vertical direction from the lower end portion in the vertical direction of one outer wall 11 (hereinafter, indicated by reference numeral 11 a) on the front side in FIGS. 1 and 2 of the outer wall 11 of the body 10. The cover portion 50 is disposed in the vicinity of one corner portion 12 (hereinafter, denoted by reference numeral 12a) on the front side of the outer wall 11a in FIGS. 1 and 2 and is formed in a flat plate shape parallel to the outer wall 11a. When the lower cover 30 is attached to the lower side in the vertical direction of the body 10, the cover 50 closes a portion where the outer wall 32 a of the electric wire through hole 40 penetrates, and the electric wire 151 within a portion that penetrates the bottom wall 31 of the electric wire through hole 40. Through.

  A plurality of locking mechanisms 60 for locking and assembling the lower cover 30 with respect to the body 10 are provided on the outer walls 11 and 11 a of the body 10 and the outer walls 32 and 32 a of the lower cover 30. The locking mechanism 60 includes a locked portion 61 provided on the outer walls 11 and 11 a of the body 10 and a locking portion 62 provided on the lower cover 30. Further, the locked portion 61 provided on the outer wall 11 (hereinafter denoted by reference numeral 11 b) connected to the corner portion 12 a of the body 10 and the outer wall 32 (hereinafter indicated by reference symbol 32 b) connected to the corner portion 33 a of the lower cover 30. The locking mechanism 60 configured with the provided locking portion 62 is provided in the vicinity of the corner portions 12a and 33a. That is, the locked portion 61 is provided in the vicinity of the corner portion 12a of the outer wall 11b, and the locking portion 62 is provided in the vicinity of the corner portion 33a of the outer wall 32b.

  As shown in FIG. 2, the locked portion 61 is provided at the lower end in the vertical direction of the outer walls 11a and 11b. As shown in FIG. 4, the locked portion 61 includes a locked protrusion 61a that protrudes from the outer walls 11a and 11b, and a locked protrusion cover 61b. The locked protrusion cover 61b is formed integrally with the outer walls 11a and 11b, and covers the outside of the locked protrusion 61a, and is formed in a cylindrical shape with the upper side in the vertical direction and the lower side in the vertical direction opened.

  The locking part 62 is locked to the locked part 61 and the lower cover 30 is assembled to the body 10. The locking portion 62 is provided at the upper end in the vertical direction of the outer walls 32a and 32b. The locking portion 62 is formed in a flat plate shape extending vertically upward from the vertical upper ends of the outer walls 32a and 32b. When the lower cover 30 is attached to the body 10, the locking portion 62 is formed at a position and a width where the locking portion 62 can enter the locked protrusion cover 61 b of the locked portion 61. The locking portion 62 has a locking hole 62a through which the locked protrusion 61a can enter. In the locking mechanism 60, the locking portion 62 enters the locked projection cover 61b, and after the locking portion 62 gets over the locked projection 61a, the locked projection 61a enters the locking hole 62a. The lower cover 30 is locked with respect to the body 10. Further, as shown in FIG. 4, the locking mechanism 60 has a gap in the width direction between the locking portion 62 and the inner surface of the locked projection cover 61b in a state where the lower cover 30 is locked to the body 10. G is provided. The gap G forms an amount by which the locking portion 62 can move in a direction perpendicular to the vertical direction with respect to the locked portion 61 when the lower cover 30 is assembled to the body 10.

  Moreover, the electrical junction box 1 is provided with the guide part 70 and the control protrusion 80, as shown in FIG.2 and FIG.3. The guide portion 70 is provided in the vicinity of the corner portion 33a of the outer wall 32a of the lower cover 30, and when the lower cover 30 is assembled to the body 10, the cover portion 50 is guided and positioned in the vertical direction with respect to the lower cover 30. . In the present embodiment, two guide portions 70 are provided, and are provided at each position where the wire passage hole 40 of the outer wall 32a is sandwiched between them. As shown in FIG. 3, the guide portion 70 has a guide groove 71 that opens on the upper side in the vertical direction and extends in parallel with the vertical direction, and guides the cover portion 50 through both ends of the cover portion 50 in the width direction. Prepare. The guide part 70 guides the cover part 50 to the lower cover 30 through both ends of the cover part 50 in the guide groove 71, and positions the cover part 50 relative to the lower cover 30 when the lower cover 30 is assembled to the body 10. .

  The restricting protrusion 80 protrudes from the guide portion 70 to the outside of the lower cover 30 and restricts the locking portion 62 from being locked to the locked portion 61 when the cover portion 50 rides on. In the present embodiment, two restricting protrusions 80 are provided on each guide portion 70. The restriction protrusion 80 is provided at the upper end in the vertical direction of the guide portion 70 and protrudes from the upper end in the vertical direction of the guide portion 70 to the outside of the lower cover 30 along the horizontal direction orthogonal to the outer wall 32a. A protruding amount E of the restricting protrusion 80 from the guide portion 70 is formed larger than the gap G. Further, the protruding amount E of the restricting protrusion 80 is larger than the amount by which the cover portion 50 can be deformed to the outside of the body 10 along the horizontal direction perpendicular to the outer wall 11a when the locking portion 62 is locked to the locked portion 61. Is also formed large. In short, when the locking portion 62 is locked to the locked portion 61, the cover portion 50 is restricted from riding on the restriction protrusion 80. In this specification, the cover unit 50 riding on the restricting protrusion 80 means that the cover unit 50 is positioned outside the box body 3 of the restricting protrusion 80 in a state where the electrical connection box 1 is fixed to the vehicle body. Say.

  Thus, in this embodiment, the guide part 70 and the control protrusion 80 are provided in the outer wall 32a continuing to the corner | angular part 33a of the vicinity of the latching | locking part 62 provided in the outer wall 32b. That is, the locking portion 62 is provided in the vicinity of the corner portion 33a of the outer wall 32b, and the guide portion 70 and the restricting projection 80 are provided in the vicinity of the corner portion 33a of the outer wall 32a.

  The electrical junction box 1 having the above-described configuration is assembled by, for example, assembling the upper cover 20 and the lower cover 30 to the body 10 to which the electronic component 2 is assembled. When the lower cover 30 is assembled to the body 10, the opening on the lower side in the vertical direction of the body 10 and the opening of the lower cover 30 are made to face each other, and then both ends of the cover portion 50 in the width direction are guide grooves 71 of the guide portion 70. The lower cover 30 is moved closer to the body 10 and the locked portion 62 is locked to the locked portion 61. When the lower cover 30 is assembled to the body 10, as shown in FIG. 5, when both ends in the width direction of the cover part 50 ride on the regulation protrusion 80 without entering the guide groove 71 of the guide part 70. Since the protruding amount E is larger than the gap G, the locked projection cover 61b of the locked portion 61 and the locking portion 62 face each other along the vertical direction. Even when the lower cover 30 is brought closer to the body 10, the locking portion 62 comes into contact with the locked projection cover 61b of the locked portion 61 and cannot enter the locked projection cover 61b. The locking portion 62 is restricted from being locked to the locking portion 61. In the electrical connection box 1, when the cover part 50 is removed from the guide groove 71 of the guide part 70, the locking part 62 is restricted from being locked to the locked part 61, and the lower cover 30 is assembled to the body 10. Is regulated.

  In the assembled electrical junction box 1, it is confirmed that the locking portion 62 is securely locked to the locked protrusion 61a of the locked portion 61 of each locking mechanism 60 by a checker (not shown) or the like. The Thereafter, the electric connection box 1 is routed by passing the electric wire 151 electrically connected to the electronic component 2 through the electric wire through hole 40, and the fixing bracket portion 15 is fixed to the vehicle body and mounted on the vehicle.

  According to the electrical junction box 1 described above, the guide portion 70 that guides and positions the cover portion 50 and the locking portion 62 that locks to the locked portion 61 of the body 10 are connected to the corner portion 33a of the lower cover 30. It is provided in the vicinity. In addition, the electrical connection box 1 includes a regulation protrusion 80 that protrudes outward from the guide portion 70 and prevents the locking portion 62 from locking to the locked portion 61 when the cover portion 50 rides on. Accordingly, since the guide portion 70 and the locking portion 62 are provided in the vicinity of the corner portion 33a of the lower cover 30 in the electrical junction box 1, even if the lower cover 30 is deformed, the guide portion 70 and the locking portion 62 are provided. The rigidity of the portion provided with is high, and the relative position between the guide portion 70 and the locking portion 62 is difficult to change.

  As a result, the electrical connection box 1 is less likely to change the position of the locking portion 62 even if the lower cover 30 is deformed when the cover portion 50 rides on the restriction projection 80 protruding outward from the guide portion 70. The locking of the locking portion 62 with the locked portion 61 remains restricted. As a result, in the electrical connection box 1, when the cover portion 50 is detached from the guide portion 70, the locking portion 62 is restricted from being locked to the locked portion 61, and the lower cover 30 is assembled to the body 10. There is an effect that it can be suppressed. Thereby, the electrical junction box 1 can be made into the state in which the body 10 and the lower cover 30 were assembled | attached appropriately, and the penetration | invasion of the liquid through the electric wire through-hole 40 can be suppressed reliably by the cover part 50. FIG. . Further, in the electrical connection box 1, if the cover part 50 is detached from the guide part 70 in a state where the lower cover 30 is assembled to the body 10, the cover part 50 rides on the regulation protrusion 80. As a result, in the state where the lower cover 30 is assembled to the body 10, the electrical connection box 1 can grasp whether or not the cover unit 50 is detached from the guide unit 70 by checking the state of the cover unit 50. it can.

  Further, since the protruding amount E of the restriction projection 80 is larger than the gap G in the electrical connection box 1, when the cover portion 50 is disengaged from the guide portion 70 and rides on the restriction projection 80, the locking portion 62 is locked. The contact with the locked projection cover 61b of the portion 61 and the entry into the locked projection cover 61b are restricted. As a result, the electrical connection box 1 can restrict the lower cover 30 from being fixed to the body 10 when the cover portion 50 is removed from the guide portion 70 and rides on the restriction protrusion 80, so that liquid can be prevented from entering the cover portion. 50 can be reliably suppressed.

  In addition, since the electrical connection box 1 is provided with two guide portions 70 and these two guide portions 70 are provided at positions where the electric wire passing hole 40 is sandwiched between them, the lower cover 30 is attached to the body 10. At the time of attachment, the guide part 70 can be positioned while guiding both ends of the cover part 50 in the width direction. Thereby, the electrical junction box 1 can suppress the cover portion 50 from being detached from the guide portion 70 after the lower cover 30 is fixed to the body 10.

  Further, the electrical connection box 1 is provided at a position where the restricting protrusions 80 protrude from the respective guide portions 70 to the outside of the lower cover 30 and the restricting protrusions 80 sandwich the electric wire through holes 40 therebetween. As a result, when the cover part 50 is removed from the guide part 70, the electrical connection box 1 reliably rides on any of the restricting protrusions 80 and restricts the lower cover 30 from being fixed to the body 10. be able to.

  Since the wire harness 150 described above includes the electrical junction box 1, when the cover portion 50 is detached from the guide portion 70, the locking portion 62 is restricted from being locked to the locked portion 61. There is an effect that the lower cover 30 can be prevented from being assembled to the body 10.

[Modification]
Next, an electrical junction box 1 according to a modification of the embodiment will be described with reference to FIGS. FIG. 6 is a perspective view illustrating a schematic configuration in the vicinity of the cover portion and the locking mechanism of the electrical junction box according to the modified example of the embodiment. FIG. 7 is a sectional view taken along line VII-VII in FIG. 6 and 7, the same parts as those in the embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIGS. 6 and 7, the electric wire through hole 40 of the electrical junction box 1 according to the modification of the embodiment is provided in the corner 33 a of the lower cover 30, and the vicinity and bottom of the corner 33 a of the outer walls 32 a and 32 b. It penetrates the vicinity of the corner 33a of the wall 31. The wire passage hole 40 is provided in the vicinity of the corner portion 33a of the outer walls 32a and 32b of the lower cover 30 over the entire length in the vertical direction.

  The cover part 50 of the electrical junction box 1 according to the modification of the embodiment extends downward in the vertical direction from the lower end in the vertical direction in the vicinity of the corners 12a of the outer walls 11a and 11b of the body 10. The cover part 50 of the electrical junction box 1 according to the modified example of the embodiment extends downward in the vertical direction from the vicinity of the corner part 12a of the outer walls 11a and 11b, and has a cross-sectional shape formed in a square shape. The guide portion 70 of the electrical junction box 1 according to the modification of the embodiment is provided in the vicinity of the corner portion 33a of the outer wall 32a and in the vicinity of the corner portion 33a of the outer wall 32b, and the electric wire through hole 40 is provided between them. It is provided in the position to pinch.

  According to the electrical connection box 1 according to the modification, as in the embodiment, when the cover portion 50 is detached from the guide portion 70, the locking portion 62 is restricted from being locked to the locked portion 61, and the body The lower cover 30 can be prevented from being fixed to 10.

  In addition, the electrical junction box 1 which concerns on this invention is not limited to embodiment mentioned above, A various change is possible in the range described in the claim. For example, in the electrical junction box 1 according to the present invention, the body 10 of the box body 3 and the upper cover 20 may be integrally formed so that the box body 3 has a two-layer structure. In the present invention, the electric wire through hole 40 may be provided at the lower end in the vertical direction of the body 10 or may be provided at both the lower end in the vertical direction of the body 10 and the lower cover 30. In short, in the present invention, the wire passage hole 40 may be provided in at least one of the body 10 and the lower cover 30. In the present invention, the electric wire passage hole 40 and the cover portion 50 may be provided on one outer wall 11a and 32a without straddling the corner portions 12a and 33a as in the embodiment. The part 50 may be provided over the outer walls 11a, 11b, 32a, 32b across the corners 12a, 33a. In the present invention, the guide portion 70 and the restriction projection 80 may be provided on one outer wall 32a as in the embodiment, and the guide portion 70 and the restriction projection 80 may be provided on each of the outer walls 32a and 32b as in the modification. . Furthermore, in this invention, you may change variously the structure of the latching | locking part 62 and the to-be-latched part 61. FIG.

1 Electrical junction box 2 Electronic component 3 Box body
10 Body (first housing)
30 Lower cover (second housing)
33, 33a Corner portion 40 Wire through hole 50 Cover portion 61 Locked portion 62 Locking portion 70 Guide portion 80 Restriction protrusion 150 Wire harness 151 Electric wire E Protrusion amount G Clearance (movable amount)

Claims (5)

A first housing in which electronic components are assembled;
A second housing attached to a lower side in the vertical direction of the first housing;
An electric wire through hole for passing an electric wire provided in at least one of the first casing and the second casing and electrically connected to the electronic component;
A cover part that is provided in the first housing and prevents liquid from entering through the wire through hole;
A guide portion provided in the second housing and for guiding the cover portion in a vertical direction with respect to the second housing when the second housing is assembled to the first housing; ,
A locking portion that is provided in the second housing and is locked to a locked portion provided in the first housing, and the second housing is assembled to the first housing;
And a regulating protrusion that projects from the guide portion to the outside of the second casing and restricts the locking portion from locking to the locked portion when the cover portion rides on. To
Electrical junction box. The guide portion and the locking portion are provided in the vicinity of a corner portion of the second housing.
The electrical junction box according to claim 1. The amount of protrusion of the restricting protrusion from the guide portion is such that when the second casing is assembled to the first casing, the locking section is perpendicular to the locked section with respect to the locked section. Larger than the amount that can be moved in the direction
The electrical junction box according to claim 1 or 2. The guide portion is provided at each position sandwiching the wire passage hole,
The restricting protrusion protrudes from each guide portion to the outside of the second housing.
The electrical junction box according to any one of claims 1 to 3. Of the first casing to which the electronic component is assembled, the second casing to be assembled on the lower side in the vertical direction of the first casing, and the first casing and the second casing A wire passage hole for passing an electric wire electrically connected to the electronic component, and a cover provided in the first casing and preventing liquid from entering through the wire passage hole; An electrical junction box comprising:
The electric wire,
The electrical junction box is
A guide portion provided in the second housing and for guiding the cover portion in a vertical direction with respect to the second housing when the second housing is assembled to the first housing; ,
A locking portion that is provided in the second housing and is locked to a locked portion provided in the first housing, and the second housing is assembled to the first housing;
And a regulating protrusion that projects from the guide portion to the outside of the second casing and restricts the locking portion from locking to the locked portion when the cover portion rides on. To
Wire harness.

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