JP6657163B2 - Electrical junction box and wire harness - Google Patents

Description

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

  2. Description of the Related Art Conventionally, an electric connection box includes a main body in which electronic components are accommodated, and a cover member for closing an opening of the main body as a constituent member of a housing. The main body and the cover member are assembled by fitting the peripheral edges of the openings to each other (that is, the ends of the outer peripheral walls on the opening side), and the fitted state is maintained by the lock mechanism. The lock mechanism includes a first engagement body provided on the outer peripheral wall of the main body, and a second engagement body provided on the outer peripheral wall of the cover member. The first engagement member and the second engagement member are configured to perform an engagement operation therebetween at the same time as the engagement operation between the main body and the cover member, and to complete the engagement operation when the engagement operation is completed. are doing. In the electric connection box, the electronic components are electrically connected to the electric wires in the accommodation room inside the housing. The electric wire is drawn out of the housing and is electrically connected to, for example, a power supply or a load of the vehicle. The electric connection box forms a wiring harness integrally with the electronic components and the electric wires. Patent Literatures 1 and 2 below disclose this type of electric junction box.

Japanese Patent No. 6053534 JP 2008-236847 A

  By the way, in the conventional electric connection box, in order to fulfill the purpose of holding the fitted state, the first engagement members are respectively arranged on two outer wall bodies of the outer peripheral wall of the main body facing each other, and the outer periphery of the cover member is provided. The second engagement body is arranged on each of two outer wall bodies that are arranged to face each other on the wall. That is, in the conventional electric connection box, a plurality of lock mechanisms are provided at least in a facing state. At least one of the first engagement body and the second engagement body has a claw portion, and the engagement between the first engagement body and the second engagement body is performed by hooking the claw portion on the other side with the fitting operation of the main body and the cover member. To complete.

  Here, in this electrical junction box, for example, when it is difficult to see the first engagement body on the back side of the worker's working position in peripheral parts such as the vehicle body, when assembling the cover member to the main body, for example, After engaging the second engagement body on the back side of the cover member with the one engagement body, the lock mechanism on the near side is engaged. However, in this electric junction box, even if the second engagement body on the rear side rides on the main body on the rear side and the second engagement body is not engaged with the first engagement body on the rear side, the lock on the front side can be achieved. The mechanism may be engaged. Therefore, depending on the positional relationship between the electric connection box and the peripheral components, there is a possibility that the operator may mistakenly recognize that the fitting of the main body and the cover member has been completed.

  Therefore, an object of the present invention is to provide an electric connection box and a wire harness that can suppress occurrence of erroneous assembly of a main body and a cover member.

In order to achieve the above object, an electric junction box according to the present invention has a cylindrical main body side outer peripheral wall provided with at least a first main body side outer wall body and a second main body side outer wall body which are arranged to face each other, The main body in which the electronic component and the electric wire are accommodated in the accommodation room inside the side outer peripheral wall, and the cylindrical cover side outer peripheral wall provided with at least the first cover side outer wall body and the second cover side outer wall body opposed to each other are provided. A cover member that fits an opening-side end of the cover-side outer peripheral wall with an opening-side end of the main-body-side outer peripheral wall to close the opening of the main body; and a first member provided on the first main-body-side outer wall. A first cover-side engaging body provided on the main body-side engaging body and the first cover-side outer wall body, wherein the first main body is located at a position where the first body-side engaging body and the first cover-side engaging body are completely engaged. First lock mechanism for holding a fitted state between the side outer wall and the first cover side outer wall A second main body side engaging body provided on the second main body side outer wall body and a second cover side engaging body provided on the second cover side outer wall body, wherein the second main body side engaging body and the second cover side are provided. A second lock mechanism for holding the fitted state between the second body-side outer wall and the second cover-side outer wall at a position where the engagement with the engagement body is completed, wherein the first cover-side engaging body is An insertion protrusion protruding toward the first body-side engagement body and along a direction intersecting the wall surface of the first cover-side outer wall body, wherein the first body-side engagement body is formed of the first body-side outer wall body. A first protruding wall portion protruding from the first main body side outer wall body toward the first cover side outer wall body side from an opening side end portion, and from both ends of the first protruding wall portion in a direction orthogonal to a protruding direction. Second and third protruding wall portions protruding toward the second main body side outer wall side; An insertion hole formed in the first protruding wall portion, into which the first cover-side engaging body is inserted from the tip to an engagement completion position; and the first cover-side engaging body formed in the first protruding wall portion. A guide portion for guiding the tip of the first protruding wall portion from an end portion of the first protruding wall portion in the protruding direction to the insertion hole, wherein the second protruding wall portion and the third protruding wall portion each The first protruding wall portion is protruded from both ends of the first protruding wall portion in a direction orthogonal to the protruding direction toward the second main body side outer wall side, and the second protruding wall portion and the third protruding wall portion insert the cover member therebetween. At least one of the second protruding wall portion and the third protruding wall portion guides the distal end of the first cover-side engaging body to the guide portion while guiding the cover member. It is characterized in that it is formed as a guide wall.

  Here, the guide wall extends from the root on the side of the first projecting wall so as to extend a frontage between ends of the second projecting wall and the third projecting wall in the projecting direction. It is desirable to provide an arc-shaped portion between the ends.

  Further, the first lock mechanism serves as a rotation fulcrum when the first cover-side engaging body is inserted into the insertion hole, and relatively rotates the main body and the cover member to a fitting completed position. It is desirable to form it.

  Further, the second lock mechanism is configured such that when the main body and the cover member are at least in the fitting completed position, the common cylindrical shaft is used for the main body side outer peripheral wall and the cover side outer peripheral wall at the fitting completed position. It is desirable that the second body-side engagement body and the second cover-side engagement body be relatively moved along the direction to the engagement completion position.

  Further, the second lock mechanism may be configured to start the engagement between the second body-side engaging body and the second cover-side engaging body while the first cover-side engaging body rides on the first protruding wall portion. It is preferable that a locking portion is provided for locking the second body-side engagement body and the second cover-side engagement body without relatively moving to the engagement completion position.

In order to achieve the above object, a wire harness according to the present invention accommodates an electronic component, an electric wire having one end electrically connected to the electronic component, and one end of the electronic component and the electric wire therein. And a housing for drawing out the other end of the electric wire to the outside. The housing has a cylindrical main body outer periphery provided with at least a first main body outer wall and a second main body outer wall opposed to each other. A main body in which the electronic component and the electric wire are housed in a housing chamber inside the outer peripheral wall on the main body side, and at least a first cover side outer wall body and a second cover side outer wall body arranged to face each other are provided; A cover member having a cylindrical cover-side outer peripheral wall, the cover member closing an opening of the main body by fitting an open-side end of the cover-side outer peripheral wall to an opening-side end of the main-body-side outer peripheral wall; A first main body side engaging body provided on the main body side outer wall body, and A first cover-side engaging body provided on the first cover-side outer wall, wherein the first main-body-side outer wall and the first cover-side engaging body are located at a position where the first body-side engaging body and the first cover-side engaging body are completely engaged. A first lock mechanism for holding the fitted state of the cover-side outer wall, a second body-side engaging body provided on the second body-side outer wall, and a second cover-side engaging body provided on the second cover-side outer wall; A second lock that holds the fitted state between the second body-side outer wall and the second cover-side outer wall at a position where the engagement between the second body-side engagement body and the second cover-side engagement body is completed. Wherein the first cover-side engaging body is an insertion protruding body that projects toward the first body-side engaging body and protrudes in a direction intersecting the wall surface of the first cover-side outer wall body. The first body-side engaging body is closer to the first cover than the opening-side end of the first body-side outer wall body. A first protruding wall portion protruding from the first main body side outer wall body toward the wall body side, and projecting toward the second main body side outer wall side from both ends of the first protruding wall portion in a direction orthogonal to a protruding direction. The second and third protruding wall portions, an insertion hole formed in the first protruding wall portion, into which the first cover-side engaging body is inserted from the tip to an engagement completed position, and the first protruding portion. formed in the wall portion, anda guide portion for guiding to the insertion hole from an end portion side of the protruding direction of the first projecting wall portion of the distal end of the first cover-side engaging member, the second projecting wall And the third protruding wall portion project from both ends of the first protruding wall portion in a direction orthogonal to a protruding direction toward the second main body side outer wall side, and the second protruding wall portion and the third protruding wall portion are formed. The protruding wall portion is located at the time of inserting the cover member therebetween, and the At least one of the second protruding wall portion and the third protruding wall portion may be formed as a guide wall for guiding the cover member and guiding the distal end of the first cover side engagement body to the guide portion. Features.

  In the electrical junction box according to the present invention, even if the first lock mechanism is arranged at a position that is hard to be seen on the back side of the working position, the operator can move the tip of the first cover-side engaging body to the first protruding wall. The first cover-side engaging body can be guided to the insertion hole of the first main-body-side engaging body along the guide portion of the first protruding wall portion by abutting against the portion. Therefore, even when the first lock mechanism is located at a position where it is difficult to see the electric connection box, the engagement of the first lock mechanism can be completed. Can be fitted. Therefore, the electrical junction box according to the present invention can suppress occurrence of erroneous assembly of the main body and the cover member. Further, since the wire harness according to the present invention includes the electric connection box, the effects of the electric connection box can be obtained.

FIG. 1 is a perspective view showing the electric connection box and the wire harness at the time of regular fitting. FIG. 2 is an exploded perspective view of the electric junction box. FIG. 3 is a perspective view of the electrical connection box at the time of regular fitting as viewed from another angle. FIG. 4 is an exploded perspective view of the electric junction box viewed from another angle. FIG. 5 is a side view showing the electrical connection box at the time of regular fitting. FIG. 6 is a top view of the electrical connection box in the regular axial connection when viewed in the cylinder axis direction. FIG. 7 is a perspective view illustrating the first body-side engagement body. FIG. 8 is a perspective view illustrating the first cover body side engaging body. FIG. 9 is a perspective view of the first cover body side engaging body as viewed from another angle. FIG. 10 is a side view showing the electric junction box during assembly. FIG. 11 is a cross-sectional view illustrating the second lock mechanism. FIG. 12 is a side view showing the electrical junction box when erroneous assembly is detected. FIG. 13 is a cross-sectional view illustrating the second lock mechanism when an erroneous assembly is detected.

  Hereinafter, an embodiment of an electric 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 by the embodiment.

[Embodiment]
One embodiment of an electric junction box and a wire harness according to the present invention will be described with reference to FIGS.

  Reference numeral 1 in FIGS. 1 to 6 indicates an electric connection box of the present embodiment. Reference symbol WH in FIG. 1 indicates a wire harness of the present embodiment including the electric connection box 1. Although the electric connection box 1 shown in each drawing has two cover members assembled to a main body 20 described later, only one cover member 30 described later is shown.

  The electric connection box 1 of the present embodiment includes a housing 10 in which an accommodation object AC (FIGS. 2 and 4) is accommodated (FIGS. 1 to 6). The housing 10 is formed of an insulating material such as a synthetic resin. The housing 10 has at least one storage chamber 11 in which the storage object AC is stored (FIGS. 2 and 4). In the housing 10, one end of the accommodation object AC and an electric wire (such as a power supply line or a signal line) We (FIG. 1) is accommodated in the interior accommodation chamber 11, and the other end of the electric wire We is located inside the interior. It is drawn out of the accommodation room 11 to the outside. Therefore, the housing 10 has at least one outlet 12 for drawing out the electric wire We from the inside to the outside (FIG. 1). FIG. 1 shows a part of the plurality of electric wires We. 2 and 4 illustrate a part of the plurality of accommodation objects AC accommodated.

  Here, as the accommodation object AC, an electronic component to which one end side of the electric wire We is electrically connected, an electronic component holder that accommodates and holds this electronic component, and the like are conceivable. The electrical connection box 1 of the present embodiment is one in which at least one of an electronic component and an electronic component holder is housed in the housing 10 as a housing object AC. The electric connection box 1 electrically connects a connection target (not shown) to the electronic component via a wire We. In the electric junction box 1, the electric wire We is electrically connected to the electronic component inside the housing 10, and the electronic component is connected to the electronic component via the electric wire We drawn from the inside of the housing 10 to the outside. It is electrically connected to the connection object. The electric connection box 1 forms a wire harness WH together with the electric wires We.

  Electronic components refer to, for example, circuit protection components such as relays and fuses, connectors, and terminal fittings. Here, electronic devices such as a circuit board and an electronic control unit (so-called ECU) are also considered as one form of electronic components. The connection target indicates a power source such as a secondary battery, a load such as an electric device (such as an actuator), a sensor, and the like. In the electric junction box 1, for example, a certain electric wire We is electrically connected to a power source, and another electric wire We is electrically connected to a load. Are electrically connected via electronic components.

  The example housing 10 includes a main body 20 and a cover member 30 as its constituent members (FIGS. 1 to 6). The main body 20 and the cover member 30 are assembled by fitting each other.

  The main body 20 is a main part of the housing 10 and has a housing chamber 11 (FIGS. 2 and 4). In the main body 20, a plurality of storage chambers 11 are formed, and the storage object AC is stored in each of the storage chambers 11. Here, one accommodation room 11 accommodates at least one accommodation object AC.

  Further, the main body 20 has an opening 21 (hereinafter, referred to as “main body side opening”) 21 for inserting the accommodation object AC (FIGS. 2 and 4). The main body side opening 21 is an insertion port for accommodating the accommodation object AC in the accommodation room 11 and communicates with the accommodation room 11. The accommodation object AC is inserted from the main body side opening 21 and accommodated in the accommodation room 11.

  The main body 20 has an outer peripheral wall 22 (hereinafter, referred to as “main body outer peripheral wall”) as a side wall (FIGS. 1 to 5), and is formed into a cylindrical shape having both ends opened. The main body side outer peripheral wall 22 is formed in a cylindrical shape provided with at least a first main body side outer wall body 22A and a second main body side outer wall body 22B opposed to each other (FIGS. 2 and 4). The illustrated body-side outer wall 22 further includes a third body-side outer wall 22C that is opposed to the first body-side outer wall 22A and a second body-side outer wall 22B that is arranged orthogonal to the first body-side outer wall 22B. And a fourth body-side outer wall 22D (FIGS. 2 and 4). Here, the first main body outer wall 22A, the second main body outer wall 22B, the third main body outer wall 22C, and the fourth main body outer wall 22D form a main body side outer peripheral wall 22 in a rectangular tube shape. I have.

  The accommodation room 11 is formed in an internal space surrounded by the outer peripheral wall 22 on the main body side. Therefore, in the main body 20, the electronic component as the storage object AC and the electronic component stored and held in the electronic component holder as the storage object AC are provided in the storage chamber 11 inside the main body side outer peripheral wall 22. The electric wire We is accommodated. In the main body 20, two openings formed by the main body side outer peripheral wall 22 become main body side openings 21 (first main body side opening 21A and second main body side opening 21B) (FIGS. 2 and 4). That is, the illustrated main body 20 is a container having two main body-side openings 21 (a first main body-side opening 21A and a second main body-side opening 21B) disposed at opposite ends, and is referred to as a so-called frame. There is. In the main body 20, an electronic component as the accommodation object AC and an electronic component accommodated and held in the electronic component holder as the accommodation object AC are inserted from the first main body side opening 21A. On the other hand, the electronic component holder as the storage object AC is inserted from the second main body side opening 21B. Inside the main body 20, the electronic component and one end of the electric wire We are electrically connected. The electric wire We is drawn out of the accommodation room 11 through the second main body side opening 21 </ b> B and guided to the outlet 12.

  In the main body 20, a cover member 30 is assembled to the first main body side opening 21A, and another cover member (not shown) is assembled to the second main body side opening 21B.

  The cover member 30 is attached to the main body 20 from the first main body side opening 21A side to close the first main body side opening 21A. The cover member 30 fits a peripheral portion of its own opening (hereinafter referred to as “cover side opening”) 31 (FIGS. 2 and 4) with a peripheral portion of the first main body side opening 21A of the main body 20. Assemble to main body 20. The peripheral edge portion of the cover-side opening 31 is a portion located at an end portion (hereinafter, referred to as an “opening-side end portion”) 32a of the cover-side outer peripheral wall 32 described later on the side of the cover-side opening 31 (FIG. 2). And FIG. 4). Further, the peripheral portion of the first main body side opening 21A is a portion located at an end (hereinafter, referred to as “opening side end”) 22a of the main body side outer peripheral wall 22 on the first main body side opening 21A side. (FIGS. 2 and 4).

  The cover member 30 has an outer peripheral wall (hereinafter, referred to as “cover-side outer peripheral wall”) 32 as a side wall (FIGS. 1 to 6), closes one end of the cover-side outer peripheral wall 32, and The other end of the cover-side outer peripheral wall 32 is opened. In the cover member 30, the opening is the cover-side opening 31. The cover-side outer peripheral wall 32 is formed in a cylindrical shape provided with at least a first cover-side outer wall body 32A and a second cover-side outer wall body 32B which are arranged to face each other (FIGS. 2 and 4). The illustrated cover-side outer peripheral wall 32 further includes a third cover-side outer wall 32C that is disposed to face and is orthogonal to the first cover-side outer wall 32A and the second cover-side outer wall 32B. And a fourth cover-side outer wall 32D (FIGS. 2 and 4). Here, the first cover-side outer wall 32A, the second cover-side outer wall 32B, the third cover-side outer wall 32C, and the fourth cover-side outer wall 32D form a cover-side outer wall 32 in a square tubular shape. I have.

  The cover member 30 covers the first main body side opening 21 </ b> A of the main body 20 by fitting the opening side end part 32 a of the cover side outer peripheral wall 32 to the opening side end part 22 a of the main body side outer peripheral wall 22. Between the main body 20 and the cover member 30, the respective opening side ends 22a and 32a of the first main body side outer wall 22A and the first cover side outer wall 32A are fitted to each other, and the second main body side outer wall 22B and The respective open-side ends 22a and 32a of the second cover-side outer wall 32B are fitted to each other, and the respective open-side ends 22a and 32a of the third body-side outer wall 22C and the third cover-side outer wall 32C are connected to each other. The opening side ends 22a and 32a of the fourth body-side outer wall body 22D and the fourth cover-side outer wall body 32D are fitted together. The mutual position of the main body 20 and the cover member 30 in the fitted state is the fitting completed position. This fitting state between the main body 20 and the cover member 30 is referred to as a regular fitting state (FIGS. 1, 3, 5, and 6). In this fitted state, the cylinder axis direction of the main body side outer peripheral wall 22 and the cylinder axis direction of the cover side outer peripheral wall 32 are in the same direction. On the other hand, between the main body 20 and the cover member 30, the engagement states of the respective opening side ends 22a and 32a different from the engagement state (for example, only a part of the respective opening side ends 22a and 32a are fitted). Are fitted together) is called a half-fitted state.

  The housing 10 includes two types of lock mechanisms (a first lock mechanism 40 and a second lock mechanism 50) in order to maintain a fitted state (a regular fitted state) between the main body 20 and the cover member 30. (FIGS. 1 to 9).

  The first lock mechanism 40 is provided between the first body-side outer wall 22A and the first cover-side outer wall 32A (FIGS. 1 and 2). The first lock mechanism 40 includes a first main body side engaging body 41 provided on the first main body side outer wall body 22A and a first cover side engaging body 42 provided on the first cover side outer wall body 32A (FIG. 2 and FIG. 4).

  The first lock mechanism 40 is in a fitted state of the first main body side outer wall 22A and the first cover side outer wall 32A at the position where the first main body side engaging body 41 and the first cover side engaging body 42 have been completely engaged. Is configured to be held.

  For example, the first cover-side engaging body 42 is formed as an insertion protruding body protruding toward the first body-side engaging body 41 and in a direction intersecting the wall surface of the first cover-side outer wall body 32A (FIG. 2, FIG. 4, FIG. 6, FIG. 8, and FIG. 9). The first main body side engaging body 41 is formed so as to have a first protruding wall portion 41a, a second protruding wall portion 41b, and a third protruding wall portion 41c (FIGS. 1 to 4, 6, and 7). ). The first protruding wall portion 41a protrudes from the first main body side outer wall body 22A toward the first cover side outer wall body 32A side from the opening end 22a of the first main body side outer wall body 22A. The second protruding wall portion 41b and the third protruding wall portion 41c are respectively protruded from both ends of the first protruding wall portion 41a in a direction orthogonal to the protruding direction toward the second body-side outer wall 22B. As described above, the first main body side engaging body 41 includes the first protruding wall portion 41a, and the second protruding wall portion 41b and the third protruding wall portion 41c protruding from both ends of the first protruding wall portion 41a. Since it has, its own rigidity can be increased.

  Further, the first main body side engaging body 41 is formed on the first protruding wall portion 41a, and the first cover side engaging body 42 is free end side distal end 42a (FIGS. 2, 5, and 6) until the engagement completion position. , FIG. 8 and FIG. 9) so as to have an insertion hole 41d that is inserted from FIG. 1, FIG. 2, FIG. 4, and FIG. In the first lock mechanism 40, when the first main body side engaging body 41 and the first cover side engaging body 42 are at the engagement completed position, the main body side outer peripheral wall 22 and the cover side outer peripheral wall 32 at the fitting completed position are provided. Thus, the two peripheral portions of the insertion hole 41d in the common cylinder axis direction (that is, the cylinder axis direction in the normal fitting state) lock the movement of the first cover side engagement body 42 in the cylinder axis direction.

  The illustrated first protruding wall portion 41a is formed as a substantially rectangular plate-like body protruding along the cylinder axis direction of the main body side outer peripheral wall 22 (FIGS. 1 to 4 and 7). In the illustrated first protruding wall portion 41a, the insertion hole 41d is arranged closer to the first main body side opening 21A side. Therefore, the first protruding wall portion 41a is provided with a guide portion 41e for guiding the distal end 42a of the first cover-side engaging body 42 from the end of the first protruding wall portion 41a in the protruding direction to the insertion hole 41d. (FIGS. 1, 3, 4, 6, and 7).

The illustrated guide portion 41e is formed as a guide groove capable of guiding the distal end 42a of the first cover-side engaging body 42 to the insertion hole 41d. In this guide portion 41e, in standard wall surface 41e ₁ and two ribs 41e ₂ forming a guide groove (Fig. 7). The standard wall surface 41e _1, is that the wall which is capable of guiding the end surface of the distal end 42a of the first cover-side engaging member 42 to the insertion hole 41d. Here, as a reference wall 41e _1, it utilizes a wall surface of the first body-side opening 21A side of the first protruding wall portion 41a. The reference wall 41e ₁ of this example, for the reinforcement of the first protruding wall portion 41a, which is protruded part. 2 ribs 41e ₂ of the present is, extending the standard wall surface 41e protrudes at a distance from one another from _1, and, to the insertion hole 41d along the guide direction of the insertion hole 41d of the front end 42a of the first cover-side engaging member 42 To be located. The two ribs 41 e ₂ can lock both side surfaces of the distal end 42 a of the first cover side engaging body 42.

The illustrated second protruding wall portion 41b and the third protruding wall portion 41c are respectively suspended from both ends of the first protruding wall portion 41a in a direction orthogonal to the protruding direction toward the second main body side outer wall 22B side. I have. Here, at least one of the second protruding wall portion 41b and the third protruding wall portion 41c guides the distal end 42a of the first cover side engaging body 42 to the guide portion 41e while guiding the cover member 30. Form as a wall. The guide wall extends, for example, from the root on the first protruding wall 41a side in order to extend the frontage between the ends of the second protruding wall 41b and the third protruding wall 41c in the protruding direction. and an arcuate portion 41b ₁ arranged between the end portion (FIGS. 1 4, 6 and 7). Thereby, when the cover member 30 inserts the end on the first cover side engaging body 42 side from the frontage of the first main body side engaging body 41, the second protruding wall 41b and the third protruding wall 41c It is easy to be invited during. Therefore, in the case 10, the first cover-side engaging body 42 is easily guided to the insertion hole 41 d of the first main body-side engaging body 41. In this example, the second body side outer wall 22B side and the fourth body side outer wall 22D side are the working positions of the worker assembling the cover member 30. Thus, here, by providing the arc-shaped portion 41b ₁ to the second protruding wall portion 41b, utilizes the second projecting wall portion 41b as a guide wall.

  The illustrated insertion hole 41d is formed in a rectangular shape. When the first body-side engagement body 41 and the first cover-side engagement body 42 are at the engagement completed position, the peripheral edge of the insertion hole 41d has two first ribs 42c (described later) of the first cover-side engagement body 42. And the end faces in the protruding direction of the two second ribs 42d are locked in the cylinder axis direction.

  On the other hand, the illustrated first cover-side engaging body 42 is projected in a direction orthogonal to the wall surface of the first cover-side outer wall 32A (FIGS. 2, 4, 6, 8, and 9). The first cover-side engaging body 42 is in a cantilever state in which the first cover-side outer wall 32A side is a fixed end and the tip 42a in the protruding direction is a free end. The first cover-side engaging body 42 projects in a direction perpendicular to the wall surface of the first cover-side outer wall body 32A, and has a rectangular piece 42b having a plane perpendicular to the cylinder axis direction of the cover-side outer peripheral wall 32. (FIGS. 8 and 9). Further, the first cover-side engaging body 42 has two first ribs 42c on one of the two wall surfaces of the piece portion 42b (the wall surface opposite to the cover-side opening 31) (FIG. 8). The other (the wall surface on the side of the cover-side opening 31) has two second ribs 42d (FIG. 9). The two first ribs 42c and the two second ribs 42d respectively protrude from two sides (two sides other than the fixed end and the free end) of the piece 42b that are opposed to each other.

  The first lock mechanism 40 serves as a pivot point between the main body 20 and the cover member 30 when the first cover-side engaging body 42 is inserted into the insertion hole 41d. The main body 20 and the cover member 30 are relatively rotated (arrow R in FIG. 10) with the first lock mechanism 40 as a rotation fulcrum, so that the opening-side ends 22a and 32a are fitted to each other (FIGS. 1 and 3). 5 and 6). Therefore, the first lock mechanism 40 is formed so as to relatively rotate the main body 20 and the cover member 30 to the fitting completed position when the first cover-side engaging body 42 is inserted into the insertion hole 41d. For example, in the illustrated first lock mechanism 40, the end faces of the first rib 42c and the second rib 42d in the protruding direction are formed such that the fixed end side is parallel to the plane of the piece 42b, and the free end is formed. The side is inclined so as to approach the piece 42b toward the free end. When the first body-side engaging body 41 and the first cover-side engaging body 42 are at the engagement completed position, the end surfaces of the two first ribs 42c on the fixed end side are provided at the peripheral edge of the rectangular insertion hole 41d. And the end faces of the two second ribs 42d on the fixed end side. Thereby, the first lock mechanism 40 of this example inserts the first cover-side engagement body 42 into the insertion hole 41d up to the engagement completion position, and also serves as a rotation fulcrum to connect the main body 20 and the cover member 30 to each other. It can be relatively rotated to the fitting completed position.

  In this example, the first lock mechanisms 40 are arranged at two locations at an interval between the first body-side outer wall 22A and the first cover-side outer wall 32A. Here, two combinations of a pair of insertion holes 41d and guide portions 41e are provided on the first protruding wall portion 41a, and two first cover-side engaging members 42 are provided on the cover member 30.

  The housing 10 is provided with a second lock mechanism 50 for holding the fitted state (normally fitted state) between the main body 20 and the cover member 30 (FIGS. 1 to 6, 10, and 11). ). The second lock mechanism 50 is provided between the second body-side outer wall body 22B and the second cover-side outer wall body 32B (FIGS. 2 to 5, 10, and 11). The second lock mechanism 50 includes a second body-side engaging body 51 provided on the second body-side outer wall 22B, and a second cover-side engaging body 52 provided on the second cover-side outer wall 32B. The second lock mechanism 50 is in the engaged state between the second main body side outer wall 22B and the second cover side outer wall 32B at the position where the second main body side engaging body 51 and the second cover side engaging body 52 have been completely engaged. Is configured to be held.

  Here, the main body 20 and the cover member 30 are fitted to each other while rotating relative to each other with the first lock mechanism 40 as a rotation fulcrum, as described above, while the second main body of the second lock mechanism 50 is engaged. The side engagement body 51 and the second cover-side engagement body 52 are engaged. Therefore, the second main body side engaging body 51 and the second cover side engaging body 52 are connected to the main body 20 and the cover member 30 with the first lock mechanism 40 as a rotation fulcrum until the relative movement along the cylinder axis direction starts. Is moving relative to the relative rotation between Therefore, the second body-side engaging body 51 and the second cover-side engaging body 52 are formed so as to perform an engaging operation while performing relative movement thereof. When the main body 20 and the cover member 30 are relatively rotated by the first lock mechanism 40 to be at least the fitting completed position, the second locking mechanism 50 of this example has the main body side outer peripheral wall 22 at the fitting completed position. The second main body side engaging body 51 and the second cover side engaging body 52 are relatively moved to the engagement completed position along the common cylinder axis direction with the cover side outer peripheral wall 32.

  For example, at least one of the second main body side engaging body 51 and the second cover side engaging body 52 is arranged along the common cylinder axis direction between the main body side outer peripheral wall 22 and the cover side outer peripheral wall 32 at the fitting completion position. It has an extended portion. Further, at least one of the second body-side engagement body 51 and the second cover-side engagement body 52 is made to protrude from an extending portion thereof in a direction crossing the cylinder axis direction, so that the second body-side engagement body 51 and the second When the cover-side engagement body 52 is at the engagement completed position, the cover body 30 has an engagement portion that holds the body 20 and the cover member 30 in a fitted state by being hooked on the other side in the cylinder axis direction.

  Specifically, one of the second body side engaging body 51 and the second cover side engaging body 52 has an extending part 52a and an engaging part 52b (FIGS. 4 and 11). The extending portion 52a extends toward the other of them and along the common cylinder axis direction between the main body side outer peripheral wall 22 and the cover side outer peripheral wall 32 at the fitting completed position. The engaging portion 52b is formed as a claw projecting from the extending portion 52a in a direction crossing the cylinder axis direction. The other of the second body-side engaging body 51 and the second cover-side engaging body 52 has the same cylinder axis direction as the body-side outer peripheral wall 22 and the cover-side outer wall 32 at the fitting completion position in the cylinder axis direction. And an engaging portion 51b which hooks on the engaging portion 52b in the cylinder axis direction (FIG. 11). The other of the second body-side engagement body 51 and the second cover-side engagement body 52 is a space inside the cylindrical portion 51a, and the second body-side engagement body 51 and the second cover-side engagement body 52 Has an insertion space 51c into which the extending portion 52a is inserted until the engagement position is reached (FIGS. 4 and 11). The engagement portion 51b may use the end of the tubular portion 51a or the like, or may be formed as a claw. Here, the second body-side engaging body 51 has a cylindrical portion 51a, an engaging portion 51b, and an insertion space 51c, and the second cover-side engaging body 52 has an extending portion 52a and an engaging portion 52b. ing.

  The illustrated extending portion 52a is provided on the second cover-side outer wall 32B in a cantilever state with the end on the main body 20 side being a free end. The extending portion 52a is formed in a rectangular piece shape to have flexibility. The illustrated engaging portion 52b is provided at the end of the extending portion 52a on the main body 20 side. The engaging portion 52b is formed as a claw portion (first claw portion) protruding in a claw shape from one flat surface at one end of the extension portion 52a on the main body 20 side. On the other hand, the engaging portion 51b in this example is provided on the inner wall surface forming the insertion space 51c in the cylindrical portion 51a. The engaging portion 51b is protruded in a direction crossing the cylinder axis direction of the cylindrical portion 51a, and when the second main body side engaging body 51 and the second cover side engaging body 52 are at the engagement completed position, the engaging portion (the (1 claw portion) 52b. The engaging portion 51b is formed as a claw (second claw) protruding in a claw shape from the inner wall surface of the cylindrical portion 51a.

  In this case, if the first cover-side engaging body 42 rides on the end surface of the first protruding wall portion 41a in the protruding direction, the operator does not notice the fact that the second locking mechanism 50 is There is a possibility that engagement may be started (FIG. 12).

  In the electric connection box 1 in this case, since the two second ribs 42d are provided on the first cover-side engaging body 42 as described above, the two second ribs 42d are connected to the first protruding wall portion. It will ride on the end face in the protruding direction at 41a. That is, in the electric junction box 1, the inclination angle of the cover member 30 with respect to the main body 20 is increased by the height of the two second ribs 42d. Since the second lock mechanism 50 has the above-described configuration, as the inclination angle of the cover member 30 with respect to the main body 20 increases, the engagement between the second main body side engagement body 51 and the second cover side engagement body 52 increases. Is difficult to complete. Therefore, in the electric connection box 1 of the present embodiment, by adjusting the height of the two second ribs 42d in the protruding direction based on such a concept, the occurrence of erroneous assembly of the main body 20 and the cover member 30 occurs. Can be suppressed.

  Further, the electric junction box 1 adjusts the amount of protrusion of the first protruding wall portion 41a in combination with or without such two second ribs 42d. Thus, occurrence of erroneous assembly between the main body 20 and the cover member 30 can be suppressed. For example, the first protruding wall portion 41a protrudes to a position where the engagement of the second lock mechanism 50 is not completed when the first cover-side engaging body 42 rides on the end surface in the protruding direction. That is, when the first cover-side engaging body 42 rides on, the larger the protrusion amount of the first protruding wall portion 41a (in other words, the farther the end face in the protruding direction is away from the opening side end portion 22a in the protruding direction), The inclination angle of the cover member 30 with respect to the main body 20 increases. Therefore, in the electrical junction box 1 of the present embodiment, the position of the end surface of the first protruding wall portion 41a in the protruding direction may be adjusted to suppress the occurrence of erroneous assembly of the main body 20 and the cover member 30.

  Further, in the electric junction box 1, when the first cover-side engaging body 42 rides on the end face of the first protruding wall portion 41a in the protruding direction, the second body-side engaging body 51 and the second cover-side engaging body are engaged. The second lock mechanism 50 may be configured so that the engagement of the combination 52 is not completed. For example, in the second lock mechanism 50, the second body-side engaging body 51 and the second cover-side engaging body 52 are provided with the first cover-side engaging body 42 riding on the end face of the first protruding wall portion 41a in the protruding direction. Are provided, the second main body-side engaging body 51 and the second cover-side engaging body 52 are locked without relatively moving to the engagement completion position when the engagement is started (FIGS. 11 and 11). 13).

  The locking portion 55 includes a first locking portion 55a provided on the second main body side engaging body 51 and a second locking portion 55b provided on the second cover side engaging body 52. For example, the first locking portion 55a is formed as a flaky protruding portion protruding from the inner peripheral surface of the cylindrical portion 51a. The first locking portion 55a is provided at a predetermined location in the insertion space 51c. The predetermined location is defined as a position where the second cover side engaging body 52 in the insertion space 51c is provided when the body 20 and the cover member 30 are rotated relative to each other with the first lock mechanism 40 as a rotation fulcrum. This is a place where the relative movement to the engagement completion position is not hindered. Then, the second locking portion 55b connects the second body-side engaging member 51 and the second cover-side engaging member 52 while the first cover-side engaging member 42 rides on the end surface of the first protruding wall portion 41a in the protruding direction. When the engagement is started, the first engagement portion 55a is abutted and locked. Two of the illustrated second locking portions 55b are provided on the second cover-side outer wall body 32B so as to interpose the extending portion 52a therebetween, and the second locking portion 55b is closer to the second body-side engaging body 51 than the engaging portion 52b. (FIG. 4).

  As described above, the main body 20 and the cover member 30 of the present embodiment are fitted to each other while being relatively rotated with the first lock mechanism 40 as a rotation fulcrum. For example, in the electrical junction box 1, the first main body side opening 21A is directed upward of the vehicle, and the second main body side outer wall 22B side is closer to the work position of the worker than the first main body side outer wall 22A side. In some cases, the main body 20 is attached to the vehicle body, and the first lock mechanism 40 is hidden by peripheral parts such as the vehicle body and is located at a position that is difficult to see.

  Even in such a case, in the electric connection box 1 of the present embodiment, the worker abuts the distal end 42a of the first cover-side engaging body 42 against the first protruding wall portion 41a, so that the first cover-side engaging body 42 can be guided to the insertion hole 41d of the first main body side engaging body 41 along the guide portion 41e of the first protruding wall portion 41a. Then, the worker can insert the first cover side engagement body 42 into the insertion hole 41d to the engagement completion position. Therefore, the electrical connection box 1 of the present embodiment can complete the engagement of the first lock mechanism 40 even if the first lock mechanism 40 is arranged at a position where it is difficult to visually recognize the first lock mechanism 40. The workability of assembling the cover member 30 can be improved.

Further, in the electrical connection box 1 of this embodiment has an arc-shaped portion 41b ₁ is provided on at least one of the second projecting wall portion 41b of the first body-side engaging member 41 third protruding wall portion 41c. Therefore, in the electrical junction box 1, when the cover member 30 is inserted from the frontage of the first main body side engaging body 41, the cover member 30 is moved along the arc-shaped portion 41 b ₁ to the first protruding wall portion 41 a. I can guide you. Therefore, in the electric junction box 1, the first cover-side engaging member 42 can be guided to the guide portion 41e of the first protruding wall portion 41a. Therefore, even if the first lock mechanism 40 is arranged at a position where it is difficult to see, the electric connection box 1 of the present embodiment completes the engagement after the first lock mechanism 40 starts to be engaged. Therefore, the workability of assembling the cover member 30 to the main body 20 can be further improved.

  Further, in the electric connection box 1 of the present embodiment, as described above, the height of the second rib 42d of the first cover-side engaging body 42 is adjusted and the end surface of the first protruding wall portion 41a in the protruding direction. And the second lock mechanism 50 is provided with a locking portion 55. Therefore, in the electric junction box 1, even if the first cover-side engaging body 42 rides on the end face of the first protruding wall portion 41a in the protruding direction, the second main body-side engaging body 51 and the second cover-side engaging member are engaged. When the engagement with the union 52 is started, the engagement of the second lock mechanism 50 cannot be completed. Therefore, the worker can grasp that the cover member 30 is not correctly assembled to the main body 20 when the engagement of the second lock mechanism 50 is not completed.

  As described above, the electrical connection box 1 of the present embodiment can complete the engagement of the first lock mechanism 40 even if the first lock mechanism 40 is disposed at a position where it is difficult to visually recognize the main body. 20 and the cover member 30 can be fitted in a regular fitting state. Therefore, the electrical junction box 1 can suppress occurrence of erroneous assembly of the main body 20 and the cover member 30. Further, the electric connection box 1 of the present embodiment is provided with an adjustment of the height of the second rib 42d, an adjustment of the position of the end face of the first protruding wall portion 41a in the protruding direction, and a locking portion 55 of the second lock mechanism 50. Thereby, an erroneous assembly of the main body 20 and the cover member 30 can be detected by an operator. Therefore, the electrical connection box 1 of the present embodiment can improve the workability of assembling the cover member 30 to the main body 20. Further, since the wire harness WH of the present embodiment includes the electric connection box 1, the effects of the electric connection box 1 can be obtained.

DESCRIPTION OF SYMBOLS 1 Electric connection box 10 Case 11 Housing room 20 Main body 21 Main body side opening 21A First main body side opening 22 Main body side outer peripheral wall 22A First main body side outer wall body 22B Second main body side outer wall body 22C Third main body side outer wall body 22D First 4 Body-side outer wall 22a Open-side end 30 Cover member 31 Cover-side opening 32 Cover-side outer peripheral wall 32A First cover-side outer wall 32B Second cover-side outer wall 32C Third cover-side outer wall 32D Fourth cover-side outer wall 32a Open end 40 First lock mechanism 41 First main body engaging body 41a First protruding wall 41b Second protruding wall 41b ₁ arc-shaped portion 41c Third protruding wall 41d Insertion hole 41e Guide 42 First cover side Engagement body 42a Tip 50 Second lock mechanism 51 Second body-side engagement body 52 Second cover-side engagement body 55 Locking part 55a First locking part 55b Second locking part A C Object to be stored We Electric wire WH Wire harness

Claims (6)

It has a cylindrical main body side outer peripheral wall provided with at least a first main body side outer wall body and a second main body side outer wall body which are arranged to face each other, and electronic components and electric wires are housed in a housing chamber inside the main body side outer wall. Body to be
A cylindrical outer cover-side outer wall provided with at least a first cover-side outer wall and a second cover-side outer wall disposed opposite to each other, and an opening of the cover-side outer wall at an opening end of the main body-side outer wall. A cover member that closes an opening of the main body by fitting a side end portion,
A first body-side engagement body provided on the first body-side outer wall body and a first cover-side engagement body provided on the first cover-side outer wall body, wherein the first body-side engagement body and the first cover-side engagement body are provided; A first lock mechanism that holds a fitted state between the first body-side outer wall and the first cover-side outer wall at a position where the engagement with the united body is completed;
A second body-side engaging body provided on the second body-side outer wall body and a second cover-side engaging body provided on the second cover-side outer wall body, wherein the second body-side engaging body and the second cover-side engagement body are provided. A second lock mechanism for holding a fitted state between the second body-side outer wall and the second cover-side outer wall at a position where the engagement with the united body is completed;
With
The first cover-side engaging body is an insertion protruding body protruding toward the first body-side engaging body and in a direction intersecting the wall surface of the first cover-side outer wall body,
A first protruding wall portion protruding from the first main body side outer wall body toward the first cover side outer wall side from an opening end of the first main body side outer wall body; Second and third projecting wall portions projecting from both ends of the first projecting wall portion in a direction orthogonal to the projecting direction toward the second body-side outer wall, respectively, and the first projecting wall portion. An insertion hole into which the first cover-side engaging body is inserted from the front end to an engagement completion position, and the first protruding wall portion, and the front end of the first cover-side engaging body is connected to the first protruding wall A guide portion for guiding from the end side in the protruding direction of the portion to the insertion hole,
The second protruding wall portion and the third protruding wall portion are respectively protruded from both ends of the first protruding wall portion in a direction orthogonal to a protruding direction toward the second main body side outer wall side,
The second protruding wall and the third protruding wall are positioned when the cover member is inserted therebetween,
At least one of the second protruding wall portion and the third protruding wall portion is formed as a guide wall that guides the distal end of the first cover side engaging body to the guide portion while guiding the cover member. An electrical junction box characterized by the following.   The guide wall has an end in a protruding direction from a root on the first protruding wall side so as to extend a frontage between ends of the second protruding wall and the third protruding wall in a protruding direction. The electric junction box according to claim 1, wherein an arc-shaped portion is provided between the electric junction box and the electric connection box.   The first lock mechanism serves as a pivot point when the first cover-side engagement body is inserted into the insertion hole, and relatively rotates the main body and the cover member to a fitting completed position. The electrical junction box according to claim 1, wherein   The second lock mechanism is configured such that, when the main body and the cover member are at least in the fitting completed position, the main body side outer peripheral wall and the cover side outer peripheral wall at the fitting completed position have a common cylindrical axis direction. The electrical junction box according to claim 1, 2 or 3, wherein the second body-side engaging body and the second cover-side engaging body are relatively moved along to the engagement completed position.   The second lock mechanism is configured such that when the first cover-side engagement body starts engaging the second body-side engagement body and the second cover-side engagement body while riding on the first protruding wall portion, 5. The electric connection box according to claim 4, further comprising a locking portion that locks the second body-side engagement body and the second cover-side engagement body without relatively moving to the engagement completion position. 6. Electronic components,
An electric wire having one end electrically connected to the electronic component;
A housing that accommodates one end of the electronic component and the electric wire inside and pulls out the other end of the electric wire to the outside,
With
The housing is
It has a cylindrical main-body-side outer peripheral wall provided with at least a first main-body-side outer wall and a second main-body-side outer wall, and the electronic component and the electric wire are provided in a housing chamber inside the main-body-side outer wall. And a main body in which
A cylindrical outer cover-side outer wall provided with at least a first cover-side outer wall and a second cover-side outer wall disposed opposite to each other, and an opening of the cover-side outer wall at an opening end of the main body-side outer wall. A cover member that closes an opening of the main body by fitting a side end portion,
A first body-side engagement body provided on the first body-side outer wall body and a first cover-side engagement body provided on the first cover-side outer wall body, wherein the first body-side engagement body and the first cover-side engagement body are provided. A first lock mechanism that holds a fitted state between the first body-side outer wall and the first cover-side outer wall at a position where the engagement with the united body is completed;
A second body-side engaging body provided on the second body-side outer wall body and a second cover-side engaging body provided on the second cover-side outer wall body, wherein the second body-side engaging body and the second cover-side engagement body are provided. A second lock mechanism for holding a fitted state between the second body-side outer wall and the second cover-side outer wall at a position where the engagement with the united body is completed;
With
The first cover-side engaging body is an insertion protruding body protruding toward the first body-side engaging body and in a direction intersecting the wall surface of the first cover-side outer wall body,
A first protruding wall portion protruding from the first main body side outer wall body toward the first cover side outer wall side from an opening end of the first main body side outer wall body; Second and third projecting wall portions projecting from both ends of the first projecting wall portion in a direction orthogonal to the projecting direction toward the second body-side outer wall, and the first projecting wall portion. An insertion hole into which the first cover-side engaging body is inserted from the front end up to the engagement completion position, and the first protruding wall portion, wherein the front end of the first cover-side engaging body is connected to the first protruding wall. A guide portion that guides from the end side in the protruding direction of the portion to the insertion hole,
The second protruding wall portion and the third protruding wall portion are respectively protruded from both ends of the first protruding wall portion in a direction orthogonal to a protruding direction toward the second main body side outer wall side,
The second protruding wall portion and the third protruding wall portion position the cover member therebetween during insertion,
At least one of the second protruding wall portion and the third protruding wall portion is formed as a guide wall that guides the distal end of the first cover side engaging body to the guide portion while guiding the cover member. A wire harness characterized by the following.

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