JP6938305B2 - Containment box cover fitting structure, electrical junction box and wire harness - Google Patents

Description

The present invention relates to a housing box cover fitting structure, an electrical junction box and a wire harness.

Conventionally, a storage box such as an electrical connection box includes a housing in which a main body and a cover member are assembled to each other. The main body and the cover member are assembled by fitting the ends of the peripheral walls on the opening side to each other. In general, the peripheral wall is bent or distorted by an external force to a greater or lesser extent. Therefore, in this type of storage box, measures are taken to improve the fitting workability between the main body and the cover member. For example, Patent Document 1 below discloses a technique in which guide portions protruding from the openings are provided at the four corners of each peripheral wall of the cover member, and the guide portions having less bending are first fitted into the main body. ing. Further, Patent Document 2 below discloses a technique in which the end of the peripheral wall on the opening side is a V-shaped inclined edge, and both ends of the inclined edge with little bending are first fitted to the other party. .. Further, in Patent Document 3 below, a fitting detection spacer having a pair of engaging ribs is attached to the inside of the main body, and a guide rib that is engaged and guided by the pair of engaging ribs is provided on the cover member. Discloses a technique for facilitating the fitting work of the main body and the cover member.

Jikkenhei 2-37519 Gazette Japanese Unexamined Patent Publication No. 11-195881 Japanese Unexamined Patent Publication No. 2001-185869

As described above, in the storage box, the fitting workability between the main body and the cover member has been improved by various methods. However, for example, the guide portions provided at the four corners have little bending, and it is difficult to fit them unless the gap between them is large, so that a gap is created in the fitting portion between the main body and the cover member. there is a possibility. In addition, if the gaps between the guides provided at the four corners are reduced in order to reduce the gaps, the fitting workability between the main body and the cover member may be reduced unless the mutual tolerance control is strict. There is sex. Further, since the V-shaped inclined edge has a narrowed area facing the other party in the central portion, liquid or dust may enter from both ends. Further, the fitting detection spacer may lead to an increase in the number of parts and reduce the workability of assembling the housing. That is, there is room for improvement in the conventional technique in improving the fitting workability between the main body and the cover member.

Therefore, an object of the present invention is to provide a cover fitting structure for a storage box, an electrical connection box, and a wire harness that can improve the fitting workability.

In order to achieve the above object, the cover fitting structure of the storage box according to the present invention closes the main body side fitting body using the peripheral edge of the main body side opening of the main body in which the storage object is housed, and the main body side opening. A fitting body that utilizes the peripheral edge of the cover-side opening of the cover member, the cover-side fitting body that is fitted to the main body-side fitting body, the first locking body provided on the main body, and the first locking body provided on the cover member. The two locking bodies are provided with a holding mechanism for holding a fitting completed state between the main body side fitting body and the cover side fitting body, and the main body side fitting body is a main body side forming the main body side opening. The first cover-side fitting wall having a fitting wall, the cover-side fitting body forms the cover-side opening, and is inserted into the inner wall surface side of the main body-side fitting wall, and the first cover-side fitting wall. A second cover-side fitting wall having an inner wall surface that is arranged to face the outer wall surface of the fitting wall at intervals and is arranged to face the outer wall surface of the main body-side fitting wall in the completed fitting state. In the second cover-side fitting wall, the first locking body and the second locking body come together while the main body and the cover member approach each other along the mating direction at the latest. When it starts to engage, its inner wall surface is formed so as to start to be arranged so as to face the outer wall surface of the main body side fitting wall , and the main body side fitting body is formed so as to be arranged so as to face the outer wall surface of the main body side fitting wall. Fittings that are oriented toward the inside of the main body and intersect with the inner wall surface of the main body side fitting wall, starting from a position that is spaced apart by at least the thickness of the first cover side fitting wall. The first fitting defect detecting portion has a defect detecting portion, and the first fitting defect detecting portion is provided between the main body side fitting body and the cover side fitting body between the inner wall surface of the main body side fitting wall in the completed fitting state. The cover-side fitting wall is inserted so as to be arranged so as to face the inner wall surface of the first cover-side fitting wall, and the main body-side fitting and the cover-side fitting are displaced from each other. When trying to fit in the posture, the end portion of the first cover side fitting wall is formed so as to lock before the engagement between the first locking body and the second locking body is completed. It is characterized by that.

Further, in order to achieve the above object, the electric connection box according to the present invention includes a main body side opening for inserting the storage object, a storage chamber for accommodating the storage object inserted from the main body side opening, and the main body. It has a main body having a main body side fitting body using the peripheral edge portion of the side opening, and a cover side fitting body using the cover side opening and the peripheral edge portion of the cover side opening, and the cover side fitting body is the main body side fitting body. A cover member that closes the opening on the main body side by fitting into the main body, a first locking body provided on the main body, and a second locking body provided on the cover member. The accommodation object includes an electronic component electrically connected to one end side of an electric wire inside the main body, or the electronic component. The main body side fitting body has a main body side fitting wall forming the main body side opening, and the cover side fitting body forms the cover side opening and the main body side fitting. The first cover side fitting wall inserted into the inner wall surface side of the wall and the outer wall surface of the first cover side fitting wall are arranged so as to face each other at a distance, and the main body side fitting is completed in the fitting completed state. A second cover-side fitting wall having an inner wall surface that is arranged to face the outer wall surface of the joint wall, and the second cover-side fitting wall has, at the latest, the main body and the cover member of each other. when while approaching along a fitting direction with the first engaging member and the second locking body began engaged, formed to begin disposed facing against the outer wall surface of the body-side fitting wall Then, the main body-side fitting body is directed toward the inside of the main body, starting from a position separated from the inner wall surface of the main body-side fitting wall by at least the thickness of the first cover-side fitting wall. Further, it has a fitting defect detecting portion crossed with respect to the inner wall surface of the fitting wall on the main body side, and in the fitting defect detecting portion, the fitting body on the main body side and the fitting body on the cover side have completed the fitting. In this state, the first cover-side fitting wall is inserted between the inner wall surface of the main body-side fitting wall and the first cover-side fitting wall is formed so as to face the inner wall surface of the first cover-side fitting wall. In addition, when the main body side fitting body and the cover side fitting body are to be fitted in a posture shifted from each other, the first locking body and the second locking body are before the engagement with the second locking body is completed. It is characterized in Rukoto be formed to lock the end of the wall fitting first cover side.

Further, in order to achieve the above object, the wire harness according to the present invention includes an electric wire and a housing for accommodating an object to be accommodated and one end side of the electric wire inside and pulling out the other end side of the electric wire to the outside. The housing is provided with an opening on the main body side for inserting the object to be accommodated, a storage chamber for accommodating the object to be accommodated inserted from the opening on the main body side, and a main body side using a peripheral edge of the opening on the main body side. It has a main body having a fitting body, a cover-side fitting body using the cover-side opening and the peripheral edge of the cover-side opening, and the main body-side opening is formed by fitting the cover-side fitting body to the main body-side fitting body. The cover member to be closed, the first locking body provided on the main body, and the second locking body provided on the cover member maintain the fitting completed state between the main body side fitting body and the cover side fitting body. The accommodation object is an electronic component electrically connected to one end side of the electric wire inside the main body, or an electronic component holder for accommodating and holding the electronic component. The main body side fitting body has a main body side fitting wall forming the main body side opening, and the cover side fitting body forms the cover side opening and is inserted into the inner wall surface side of the main body side fitting wall. The first cover-side fitting wall and the outer wall surface of the first cover-side fitting wall are arranged to face each other with a gap from each other, and when the fitting is completed, the first cover-side fitting wall faces the outer wall surface of the main body-side fitting wall. The second cover-side fitting wall having an inner wall surface to be arranged is provided, and the second cover-side fitting wall has the main body and the cover member approaching each other along the fitting direction at the latest. When the first locking body and the second locking body start to engage with each other, the first locking body is formed so as to start to be arranged to face the outer wall surface of the main body side fitting wall , and the main body side fitting body is formed. Starting from a position separated from the inner wall surface of the main body side fitting wall by at least the thickness of the first cover side fitting wall, the inside of the main body is directed toward the inside of the main body and inside the main body side fitting wall. The fitting defect detecting portion has a fitting defect detecting portion crossed with respect to the wall surface, and the fitting defect detecting portion is a fitting defect detecting portion of the main body side fitting wall in a state where the main body side fitting body and the cover side fitting body are in the fitting completed state. The first cover-side fitting wall is inserted between the inner wall surface and the first cover-side fitting wall so as to be arranged so as to face the inner wall surface of the first cover-side fitting wall, and the main body-side fitting body and the said body. When the cover-side fitting body is to be fitted in a position that is offset from each other, the end of the first cover-side fitting wall is before the engagement between the first locking body and the second locking body is completed. It is characterized in that it is formed so as to lock the portions.

In the cover fitting structure of the storage box according to the present invention, the main body side fitting wall is sandwiched between the first cover side fitting wall and the second cover side fitting wall between the main body and the cover member. In this state, the first locking body and the second locking body can be started to be engaged with each other. Therefore, when the engagement between the first locking body and the second locking body is completed, the main body side fitting wall is first covered between the first cover side fitting wall and the second cover side fitting wall. It can be fitted to the side fitting wall. Therefore, this cover fitting structure can improve the fitting workability between the main body and the cover member. As described above, since the cover fitting structure can improve the fitting workability between the main body and the cover member, it is possible to suppress the occurrence of fitting failure between them. Further, since the electric junction box and the wire harness according to the present invention have the cover fitting structure, the effect of the cover fitting structure can be exhibited.

FIG. 1 is a perspective view showing a cover fitting structure, an electrical connection box, and a wire harness of the storage box of the embodiment. FIG. 2 is a perspective view of the cover fitting structure of the storage box, the electrical connection box, and the wire harness of the embodiment as viewed from different angles. FIG. 3 is a side view showing the cover fitting structure and the electrical connection box of the storage box of the embodiment. FIG. 4 is a side view of the cover fitting structure of the storage box and the electrical connection box of the embodiment as viewed from different angles. FIG. 5 is an exploded perspective view of the electrical junction box. FIG. 6 is an exploded perspective view of the electrical junction box viewed from another angle. FIG. 7 is a perspective view of the second cover member. FIG. 8 is a perspective view showing a cover fitting structure when the holding mechanism is in the engagement start position. FIG. 9 is a plan view showing a cover fitting structure when the holding mechanism is in the engagement start position. FIG. 10 is a cross-sectional view taken along the line X1-X1 of FIG. FIG. 11 is a perspective view of the cover fitting structure when the holding mechanism is in the engagement start position, as viewed from another angle. FIG. 12 is a plan view of the cover fitting structure when the holding mechanism is in the engagement start position, as viewed from another angle. FIG. 13 is a cross-sectional view taken along the line Y1-Y1 of FIG. FIG. 14 is a cross-sectional view taken along the line X1-X1 of FIG. FIG. 15 is a cross-sectional view taken along the line Y1-Y1 of FIG. FIG. 16 is a cross-sectional view taken along the line X2-X2 of FIG. FIG. 17 is a cross-sectional view taken along the line Y2-Y2 of FIG. FIG. 18 is a cross-sectional view taken along the line X2-X2 of FIG. FIG. 19 is a cross-sectional view taken along the line Y2-Y2 of FIG. FIG. 20 is a perspective view for explaining a fitting defect detection unit, and is a diagram showing a state before fitting of the main body and the second cover member. FIG. 21 is a perspective view illustrating a fitting defect detecting unit, and is a diagram showing a state in which a fitting defect is detected.

Hereinafter, embodiments of the cover fitting structure of the storage box, the electrical connection box, and the wire harness according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

[Embodiment]
One of the cover fitting structures of the storage box, the electrical connection box, and the wire harness according to the present invention will be described with reference to FIGS. 1 to 21. In the present embodiment, an electrical connection box will be described as an example of the storage box.

Reference numerals 1 in FIGS. 1 to 4 indicate the electrical junction box of the present embodiment. Further, reference numerals WH in FIGS. 1 and 2 indicate the wire harness of the present embodiment provided with the electrical connection box 1.

The electrical connection box 1 of the present embodiment includes a housing 10 in which the storage object AC (FIGS. 5 and 6) is housed (FIGS. 1 and 2). The housing 10 is molded from an insulating material such as synthetic resin. The housing 10 has at least one storage chamber 11 in which the storage object AC is housed (FIGS. 5 and 6). In the housing 10, one end side of the accommodation object AC and the electric wire (power supply line, signal line, etc.) We (FIGS. 1 and 2) is accommodated in the internal accommodation chamber 11, and the other end of the electric wire We. The side is pulled out from the internal containment chamber 11. Therefore, the housing 10 has at least one outlet 12 for pulling out the electric wire We from the inside to the outside (FIGS. 1 and 2). In addition, in FIG. 1 and FIG. 2, a part of a plurality of existing electric wires We is shown.

Here, as the accommodation object AC, an electronic component electrically connected to one end side of the electric wire We, an electronic component holder that accommodates and holds the electronic component, and the like can be considered. The electrical connection box 1 of the present embodiment is one in which at least one of the electronic component and the electronic component holder is accommodated in the housing 10 as the accommodation object AC. The electrical connection box 1 electrically connects an object to be connected (not shown) to the electronic component via an electric wire We. In the electrical connection 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 object to be connected. The electric junction box 1 forms a wire harness WH together with the electric wire We.

Electronic components refer to, for example, circuit protection components such as relays and fuses, connectors, terminal fittings, and the like. Here, electronic devices such as circuit boards and electronic control units (so-called ECUs) are also considered as a form of electronic components. Further, the connection target refers to a power source such as a secondary battery, a load such as an electric device (actuator, etc.), 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, and the power source and the load are connected. Is electrically connected via electronic components.

The illustrated housing 10 is formed by assembling three members, a main body 20, a first cover member 30, and a second cover member 40 (FIGS. 1 to 6).

The main body 20 forms the main part of the housing 10 and has a storage chamber 11 (FIGS. 5 and 6). In the main body 20, a plurality of accommodation chambers 11 are formed, and the accommodation object AC is accommodated in each accommodation chamber 11. Here, at least one storage object AC is housed in one storage room 11.

Further, the main body 20 has an opening (hereinafter, referred to as “main body side opening”) 21 for inserting the accommodation object AC (FIGS. 5 and 6). The main body side opening 21 is an insertion port for accommodating the accommodation object AC in the accommodation chamber 11, and communicates with the accommodation chamber 11. The storage object AC is inserted through the opening 21 on the main body side and is stored in the storage chamber 11.

The main body 20 of this example has an outer peripheral wall 22 as a side wall (FIGS. 1 to 6), and is formed into a cylindrical shape with both ends open. The accommodation chamber 11 is formed in an internal space surrounded by an outer peripheral wall 22 thereof. In the main body 20, the two openings formed by the outer peripheral wall 22 are the main body side openings 21 (first main body side opening 21A, second main body side opening 21B), respectively. That is, the main body 20 of this example is an accommodating body having two main body side openings 21 (first main body side opening 21A, second main body side opening 21B) arranged to face each other at both ends (FIGS. 5 and 6). It may be called a so-called frame. In the main body 20, the electronic component as the accommodation object AC and the electronic component accommodated and held in the electronic component holder as the accommodation object AC are inserted through the opening 21A on the first main body side. On the other hand, the electronic component holder as the accommodation object AC is inserted through the opening 21B on the second main body side. Inside the main body 20, the electronic component and one end side of the electric wire We are electrically connected. The electric wire We is pulled out from the accommodating chamber 11 through the opening 21B on the second main body side and guided to the outlet 12.

The first 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 first cover member 30 fits the peripheral edge portion of its own opening (hereinafter referred to as “cover side opening”) 31 (FIGS. 5 and 6) with the peripheral edge portion of the first main body side opening 21A of the main body 20. Attaches to the main body 20. The first cover member 30 of this example has an outer peripheral wall 32 as a side wall (FIGS. 1 to 6), one end of the outer peripheral wall 32 is closed, and the other end of the outer peripheral wall 32 is opened. ing. In the first cover member 30, the opening is the cover side opening 31. Here, the peripheral edge portion of the cover side opening 31 is a portion located at the end portion of the outer peripheral wall 32 on the cover side opening 31 side. The peripheral edge of the first main body side opening 21A is a portion of the outer peripheral wall 22 located at the end of the outer peripheral wall 22 on the first main body side opening 21A side.

The second cover member 40 is attached to the main body 20 from the second main body side opening 21B side to close the second main body side opening 21B. The second cover member 40 is attached to the main body 20 by fitting the peripheral edge portion of its own opening (cover side opening) 41 (FIGS. 5 to 7) to the peripheral edge portion of the second main body side opening 21B of the main body 20. .. The second cover member 40 of this example has an outer peripheral wall 42 as a side wall (FIGS. 1 to 7), one end of the outer peripheral wall 42 is closed, and the other end of the outer peripheral wall 42 is opened. ing. In the second cover member 40, the opening is the cover side opening 41. Here, the peripheral edge portion of the cover side opening 41 is a portion located at the end portion of the outer peripheral wall 42 on the cover side opening 41 side. The peripheral edge of the second main body side opening 21B is a portion of the outer peripheral wall 22 located at the end of the outer peripheral wall 22 on the second main body side opening 21B side.

In the following, the cover fitting structure will be described with a focus on the second cover member 40.

The main body 20 has a fitting body (hereinafter, referred to as “main body side fitting body”) 23 utilizing the peripheral edge portion of the second main body side opening 21B (FIGS. 1 to 6). Further, the second cover member 40 has a fitting body (hereinafter, referred to as “cover side fitting body”) 43 utilizing the peripheral edge portion of the cover side opening 41 (FIGS. 5 and 6). The main body 20 and the second cover member 40 are in a mating complete state by fitting the main body side fitting body 23 and the cover side fitting body 43. In the mating completed state, the second cover member 40 closes the opening 21B on the second main body side.

Here, the main body-side fitting body 23 has a main body-side fitting wall 24 forming a second main body-side opening 21B (FIGS. 1 to 6). In the main body 20, the area surrounded by the end of the outer peripheral wall 22 on the second main body side opening 21B side is the second main body side opening 21B, so that the end portion of the outer peripheral wall 22 on the second main body side opening 21B side. Is used as the fitting wall 24 on the main body side.

Further, the cover-side fitting body 43 has a cover-side fitting wall (hereinafter, referred to as “first cover-side fitting wall”) 44 forming a cover-side opening 41 (FIGS. 5 to 7). In the second cover member 40, the area surrounded by the end of the outer peripheral wall 42 on the cover side opening 41 side is the cover side opening 41. Therefore, the end portion of the outer peripheral wall 42 on the cover side opening 41 side is the first. It is used as a cover-side fitting wall 44. The first cover-side fitting wall 44 is inserted into the inner wall surface side of the main body-side fitting wall 24 from the second main body-side opening 21B. The first cover-side fitting wall 44 has its own outer wall surface opposed to the inner wall surface of the main body-side fitting wall 24 so as to be fitted to the main body-side fitting wall 24.

Further, the cover-side fitting body 43 is referred to as a cover-side fitting wall (hereinafter, referred to as "second cover-side fitting wall") which is arranged to face the outer wall surface of the main body-side fitting wall 24 in the fitting completed state. ) 45 (FIGS. 1 to 7). The second cover-side fitting wall 45 is an inner wall surface that is arranged to face the outer wall surface of the first cover-side fitting wall 44 at intervals, and the fitting wall 24 on the main body side is in a completed fitting state. It has an inner wall surface that is arranged to face the outer wall surface. That is, the cover-side fitting body 43 is formed so that the main body-side fitting wall 24 can be sandwiched between the first cover-side fitting wall 44 and the second cover-side fitting wall 45 when the fitting is completed. ..

The second cover-side fitting wall 45 is arranged so as to be adjacent to at least the holding mechanism 50 (FIGS. 1 to 13). When the holding mechanism 50 is provided at a plurality of places, the second cover side fitting wall 45 is arranged adjacent to at least one of the plurality of holding mechanisms 50. In this example, among the plurality of holding mechanisms 50, the second cover side fitting wall 45 is arranged adjacent to the holding mechanisms 50A and 50B, respectively.

The holding mechanism 50 is for holding a fitting completed state between the main body side fitting body 23 and the cover side fitting body 43 (that is, a fitting completed state between the main body 20 and the second cover member 40). It is a thing. In the holding mechanism 50 of this example, the first locking body 51 provided on the main body 20 and the second locking body 52 provided on the second cover member 40 are placed between the main body 20 and the second cover member 40. The mating complete state is maintained (FIGS. 5 and 6). The holding mechanism 50 suppresses the movement of the main body 20 and the second cover member 40 in the removal direction when the fitting is completed. The first locking body 51 and the second locking body 52 are in a locked state when the main body 20 and the second cover member 40 try to move in the removing direction thereof (FIGS. 10). ) Are provided. The locking portions 51a and 52a are, for example, a claw portion, a wall surface on which the claw portion is hooked, or the like.

The first locking body 51 and the second locking body 52 are formed so that the main body 20 and the second cover member 40 start to engage with each other while approaching each other along the fitting direction. 8 to 13 show the engagement start positions of the first locking body 51 and the second locking body 52. The engagement start position referred to here is a position where the ends 51b and 52b (FIG. 10) of the first locking body 51 and the second locking body 52 intersect each other for the first time in the fitting direction. Further, the first locking body 51 and the second locking body 52 are engaged with each other when the fitting between the main body side fitting body 23 and the cover side fitting body 43 is completed, and the main body 20 and the second locking body 52 are engaged with each other. 2 The cover member 40 is formed so that the movement in the removal direction can be locked between the locking portions 51a and 52a. 1 to 4, 14 and 15 show the engagement completion positions of the first locking body 51 and the second locking body 52.

Here, in the second cover side fitting wall 45, the first locking body 51 and the second locking body 52 are engaged with each other while the main body 20 and the second cover member 40 approach each other along the mating direction at the latest. When they start to fit (FIGS. 8 to 13), they are formed so that their inner wall surface starts to be arranged to face the outer wall surface of the main body side fitting wall 24 (FIGS. 16 and 17). As a result, between the main body 20 and the second cover member 40, the main body side fitting wall 24 is sandwiched between the first cover side fitting wall 44 and the second cover side fitting wall 45. , The first locking body 51 and the second locking body 52 can be started to be engaged with each other. Therefore, when the engagement between the first locking body 51 and the second locking body 52 is completed (FIGS. 14 and 15), the first cover side fitting wall 44 and the second cover side fitting wall 45 The main body side fitting wall 24 can be fitted to the first cover side fitting wall 44 (FIGS. 18 and 19). Therefore, this cover fitting structure can improve the fitting workability between the main body 20 and the second cover member 40.

In this example, when the first locking body 51 and the second locking body 52 start to engage, the inner wall surface of the main body side fitting wall 24 and the outer wall surface of the first cover side fitting wall 44 are brought into contact with each other. The outer wall surface of the main body side fitting wall 24 and the inner wall surface of the second cover side fitting wall 45 are arranged to face each other (FIGS. 16 and 17).

Further, the electrical connection box 1 of the present embodiment has a poor fit between the main body 20 and the second cover member 40 before the engagement between the first locking body 51 and the second locking body 52 is completed. A fitting defect detecting unit 60 for detecting is provided (FIGS. 20 and 21). The fitting defect detecting unit 60 detects a fitting defect in such a state to perform a fitting operation between the forcible main body side fitting body 23 and the cover side fitting body 43 and the first locking body 51. This is to prevent the engagement work between the second locking body 52 and the second locking body 52 from being carried out. Here, the fitting defect detecting unit 60 is provided on the main body side fitting body 23.

The fitting defect detecting unit 60 is directed toward the inside of the main body 20 starting from a position spaced from the inner wall surface of the main body side fitting wall 24 by at least the thickness of the first cover side fitting wall 44. It is formed as a wall body intersecting the inner wall surface of the main body side fitting wall 24. Then, the fitting defect detecting unit 60 is formed so as to be arranged so as to face the inner wall surface of the first cover side fitting wall 44 in the fitting completed state. Further, the fitting defect detecting unit 60 is attached to the inner wall surface of the first cover-side fitting wall 44 when the main body-side fitting body 23 and the cover-side fitting body 43 start to fit each other in the correct posture. It is formed so as to be arranged so as to face each other. Furthermore, when the fitting defect detecting unit 60 tries to fit the main body side fitting body 23 and the cover side fitting body 43 in a posture in which they are displaced from each other, the first locking body 51 and the second locking body 52 It is formed so as to lock the end portion 44a of the first cover side fitting wall 44 before the engagement with the first cover side fitting wall 44 is completed (FIG. 21).

The main body side fitting body 23 and the cover side fitting body 43 are no longer fitted by the fitting defect detecting unit 60 locking the end portion 44a of the first cover side fitting wall 44. At that time, since the first locking body 51 and the second locking body 52 have not been fully engaged, they can be separated from each other. Therefore, the operator can interrupt the fitting work between the main body side fitting body 23 and the cover side fitting body 43, pull them apart, and start the fitting work again. That is, the operator performs the fitting work between the main body 20 and the second cover member 40 without performing the work of releasing the engagement completed state between the first locking body 51 and the second locking body 52. It can be fixed. Therefore, this cover fitting structure can further improve the fitting workability between the main body 20 and the second cover member 40.

As shown above, the cover fitting structure of the storage box of the present embodiment is a fitting operation between the main body 20 and the second cover member 40 (between the main body side fitting body 23 and the cover side fitting body 43). Since the property can be improved, it is possible to suppress the occurrence of fitting defects between them. Further, in this cover fitting structure, the main body side fitting body 23 and the cover side fitting body 43 can be bent, so that the fitting workability between them can be improved without strict tolerance control. The gap between them can be reduced without lowering. Furthermore, this cover fitting structure can improve the fitting workability between the main body 20 and the second cover member 40 without increasing the number of parts. Further, since the electric connection box 1 and the wire harness WH of the present embodiment include the cover fitting structure thereof, the effect of the cover fitting structure can be exhibited.

1 Electrical connection box 10 Housing 11 Storage room 20 Main body 21,21A, 21B Main body side opening 23 Main body side fitting body 24 Main body side fitting wall 40 Second cover member (cover member)
41 Cover side opening 43 Cover side fitting body 44 First cover side fitting wall 45 Second cover side fitting wall 50, 50A, 50B Holding mechanism 51 First locking body 52 Second locking body 60 Fitting defect detector AC containment object We electric wire WH wire harness

Claims (3)

A body-side fitting that utilizes the peripheral edge of the body-side opening of the body that houses the object to be stored,
A fitting body that utilizes the peripheral edge of the cover side opening of the cover member that closes the main body side opening, and a cover side fitting body that is fitted to the main body side fitting body.
A holding mechanism that holds the fitting completed state between the main body side fitting body and the cover side fitting body by the first locking body provided on the main body and the second locking body provided on the cover member.
With
The main body side fitting body has a main body side fitting wall forming the main body side opening, and has a main body side fitting wall.
The cover-side fitting body forms the cover-side opening and is inserted into the inner wall surface side of the main body-side fitting wall in the first cover-side fitting wall and the outer wall surface of the first cover-side fitting wall. It has a second cover-side fitting wall having an inner wall surface which is arranged to face each other at a distance and is arranged to face the outer wall surface of the main body-side fitting wall in the fitting completed state.
When the first locking body and the second locking body start to engage with each other while the main body and the cover member approach each other along the mating direction of the second cover side fitting wall at the latest. In addition, the inner wall surface of the self is formed so as to start to be arranged to face the outer wall surface of the fitting wall on the main body side.
The main body-side fitting body is directed toward the inside of the main body and said, starting from a position separated from the inner wall surface of the main body-side fitting wall by at least the thickness of the first cover-side fitting wall. It has a fitting defect detection unit that intersects the inner wall surface of the fitting wall on the main body side.
In the fitting defect detecting unit, the first cover-side fitting wall is inserted between the main body-side fitting body and the cover-side fitting body and the inner wall surface of the main body-side fitting wall in the completed fitting state. The first cover-side fitting wall is formed so as to face the inner wall surface of the first cover-side fitting wall, and the main body-side fitting body and the cover-side fitting body are intended to be fitted in a posture in which they are displaced from each other. In the case, the storage box is formed so as to lock the end portion of the first cover side fitting wall before the engagement between the first locking body and the second locking body is completed. Cover fitting structure. A main body having an opening on the main body side for inserting the object to be stored, a storage chamber for accommodating the object to be stored inserted from the opening on the main body side, and a fitting body on the main body side using the peripheral edge of the opening on the main body side.
A cover member having a cover-side opening and a cover-side fitting using the peripheral edge of the cover-side opening, and fitting the cover-side fitting to the main body-side fitting to close the main body-side opening.
A holding mechanism that holds the fitting completed state between the main body side fitting body and the cover side fitting body by the first locking body provided on the main body and the second locking body provided on the cover member.
With
The accommodation object is an electronic component electrically connected to one end side of an electric wire inside the main body, or an electronic component holder that accommodates and holds the electronic component.
The main body side fitting body has a main body side fitting wall forming the main body side opening, and has a main body side fitting wall.
The cover-side fitting body forms the cover-side opening and is inserted into the inner wall surface side of the main body-side fitting wall in the first cover-side fitting wall and the outer wall surface of the first cover-side fitting wall. It has a second cover-side fitting wall having an inner wall surface which is arranged to face each other at a distance and is arranged to face the outer wall surface of the main body-side fitting wall in the fitting completed state.
When the first locking body and the second locking body start to engage with each other while the main body and the cover member approach each other along the mating direction of the second cover side fitting wall at the latest. Is formed so as to start to be arranged so as to face the outer wall surface of the main body side fitting wall.
The main body-side fitting body is directed toward the inside of the main body and said, starting from a position separated from the inner wall surface of the main body-side fitting wall by at least the thickness of the first cover-side fitting wall. It has a fitting defect detection unit that intersects the inner wall surface of the fitting wall on the main body side.
In the fitting defect detecting unit, the first cover-side fitting wall is inserted between the main body-side fitting body and the cover-side fitting body and the inner wall surface of the main body-side fitting wall in the completed fitting state. The first cover-side fitting wall is formed so as to face the inner wall surface of the first cover-side fitting wall, and the main body-side fitting body and the cover-side fitting body are intended to be fitted in a posture in which they are displaced from each other. In the case of an electrical connection, the first covering body is formed so as to lock the end portion of the fitting wall on the first cover side before the engagement between the first locking body and the second locking body is completed. box. With electric wires
A housing that accommodates the object to be accommodated and one end side of the electric wire inside and pulls out the other end side of the electric wire to the outside.
With
The housing is a main body-side fitting body that utilizes an opening on the main body side for inserting the object to be accommodated, a storage chamber for accommodating the object to be accommodated inserted from the opening on the main body side, and a peripheral edge of the opening on the main body side. A cover that closes the main body side opening by fitting the cover side fitting body to the main body side fitting body. The member, the first locking body provided on the main body, and the second locking body provided on the cover member hold the fitting completed state between the main body side fitting body and the cover side fitting body. With a mechanism,
The accommodation object is an electronic component electrically connected to one end side of the electric wire inside the main body, or an electronic component holder that accommodates and holds the electronic component.
The main body side fitting body has a main body side fitting wall forming the main body side opening, and has a main body side fitting wall.
The cover-side fitting body forms the cover-side opening and is inserted into the inner wall surface side of the main body-side fitting wall in the first cover-side fitting wall and the outer wall surface of the first cover-side fitting wall. It has a second cover-side fitting wall having an inner wall surface which is arranged to face each other at a distance and is arranged to face the outer wall surface of the main body-side fitting wall in the fitting completed state.
When the first locking body and the second locking body start to engage with each other while the main body and the cover member approach each other along the mating direction of the second cover side fitting wall at the latest. Is formed so as to start to be arranged so as to face the outer wall surface of the main body side fitting wall.
The main body-side fitting body is directed toward the inside of the main body and said, starting from a position separated from the inner wall surface of the main body-side fitting wall by at least the thickness of the first cover-side fitting wall. It has a fitting defect detection unit that intersects the inner wall surface of the fitting wall on the main body side.
In the fitting defect detecting unit, the first cover-side fitting wall is inserted between the main body-side fitting body and the cover-side fitting body and the inner wall surface of the main body-side fitting wall in the completed fitting state. The first cover-side fitting wall is formed so as to face the inner wall surface of the first cover-side fitting wall, and the main body-side fitting body and the cover-side fitting body are intended to be fitted in a posture in which they are displaced from each other. In the case, the wire harness is formed so as to lock the end portion of the fitting wall on the first cover side before the engagement between the first locking body and the second locking body is completed. ..

Images