JP2018129931A - Electric connection box and wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric connection box and a wire harness capable of preventing floating of an upper cover due to water pressure in high-pressure cleaning.SOLUTION: An electric connection box 1 is provided with: a frame 3; an upper cover 5; and a locking mechanism 9 for slidably moving the upper cover 5 along an opening 3b so as to be locked to the frame 3. The frame 3 is provided with a lock receiving part 35 which is formed along an outer periphery of the frame 3 inside the opening. The upper cover 5 is provided with a locking part 55 which is formed along an inner periphery and locked to the lock receiving part 35 in accordance with movement of the upper cover 5. The locking part 55 is locked to the lock receiving part 35 in accordance with a locking operation for locking a locking pawl to the locking hole. In a locked state, a locking surface 55a of the locking part 55 faces a locking surface 35a of the lock receiving part 35 in a vertical direction to restrict vertical separation between the frame 3 and the upper cover 5.SELECTED DRAWING: Figure 4

Description

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

  Conventionally, electrical connection boxes (junction boxes, fuse boxes, relay boxes, etc.) that are mounted on vehicles such as automobiles and collect and house connection components such as wire harnesses and electronic components such as fuses and relays. )It has been known. Such an electrical connection box includes, for example, a frame and a cover attached to the frame as in Patent Document 1, and the cover has a hook portion on the cover side hooked on a convex portion on the frame side, The structure attached to a flame | frame by rotating centering on a hook part is disclosed.

  In Patent Document 2, an electrical connection box having an accommodation cover having a groove portion extending linearly in the vertical direction on the outer surface and a folded wall portion formed of a wall formed so that the groove surface of the groove portion is folded downward. It is disclosed.

JP2015-104207A JP 2014-3880 A

  By the way, in the conventional electrical junction box, for example, when high-pressure washing is performed from the lower side of the vehicle, if the collar portion of the upper cover is directly exposed to water, the upper cover may be lifted by water pressure, so that waterproofness may not be secured. There is room for improvement.

  An object of the present invention is to provide an electrical junction box and a wire harness that can prevent the upper cover from being lifted by water pressure during high-pressure cleaning.

  In order to achieve the above object, an electrical junction box according to the present invention has an opening at least at an upper side end, a first housing member that accommodates at least an electronic component through the opening, A second casing member positioned above the one casing member and closing the opening; and moving the second casing member along the opening of the first casing member to The first locking portion of the second housing member is locked to the first locking receiving portion of the first housing member, and the locking position between the first locking portion and the first locking receiving portion is determined. The second housing member is rotated about the center, the second housing member closes the opening of the first housing member, and the second locking portion of the second housing member is A locking mechanism for locking to a second locking receiving portion of the one housing member, wherein the first housing member is located above the first housing member on the inner side of the opening. A first restricting portion formed along an outer periphery of the second portion, wherein the second housing member is located at a position facing the opening and along the inner periphery of the lower end portion of the second housing member. A second restricting portion that is formed and is engaged with the first restricting portion as the second housing member moves with respect to the first housing member; and the first restricting portion and the second restricting portion. In the locked state, the second locking surface of the second restricting portion faces the first locking surface of the first restricting portion in the up-down direction, and the first housing member and the first locking surface The two casing members are restricted from being separated in the vertical direction.

  In the electrical junction box, the first casing member and the second casing member may be configured such that an outer periphery of an upper side end portion of the first casing member is in the second casing in a locked state by the locking mechanism. Located on the inner peripheral side of the lower end portion of the body member, the first casing member extends along the circumferential direction of the first casing member at the outer periphery of the upper end portion of the first casing member. An insertion wall portion formed continuously; and the second housing member is arranged on an outer periphery of a lower end portion of the second housing member so that the insertion wall portion is on a lower side when the opening is closed. It is preferable to have a groove portion that is inserted from above and is continuously formed along the circumferential direction of the second casing member.

  In order to achieve the above object, a wire harness according to the present invention has at least one or more electric wires and an opening at least at an upper end, and accommodates at least an electronic component through the opening. A body member, a second housing member positioned above the first housing member and closing the opening, and the second housing member as the opening of the first housing member And the first locking portion of the second housing member is locked to the first locking receiving portion of the first housing member, and the first locking portion and the first locking receiving portion The second housing member is rotated about the locking position with the second housing member, the second housing member closes the opening of the first housing member, and the second housing member An electrical connection box having a locking mechanism for locking the locking portion to the second locking receiving portion of the first housing member, and the first housing The material includes a first restriction portion formed along an outer periphery of an upper side end portion of the first housing member inside the opening portion, and the second housing member faces the opening portion. At a position along the inner periphery of the lower end portion of the second casing member, and with the movement of the second casing member relative to the first casing member, A second restricting portion for stopping, wherein the first restricting portion and the second restricting portion are in a locked state, and are second of the second restricting portion with respect to the first locking surface of the first restricting portion. The engaging surfaces face each other in the vertical direction, and the first housing member and the second housing member are restricted from being separated in the vertical direction.

  According to the electrical junction box and the wire harness according to the present invention, it is possible to prevent the upper cover from being lifted by water pressure during high-pressure cleaning.

FIG. 1 is a perspective view illustrating a schematic configuration of an electrical junction box according to the embodiment. FIG. 2 is an exploded perspective view showing a schematic configuration of the electrical junction box according to the embodiment. FIG. 3 is a perspective view showing a schematic configuration of an upper cover constituting the electrical junction box according to the embodiment. FIG. 4 is a cross-sectional perspective view of a main part of a housing constituting the electrical junction box according to the embodiment. FIG. 5 is a cross-sectional view of the main part of the housing constituting the electrical junction box according to the embodiment.

  Hereinafter, an electrical junction box and a wire harness according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by embodiment shown below. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

[Embodiment]
FIG. 1 is a perspective view illustrating a schematic configuration of an electrical junction box according to the embodiment. FIG. 2 is an exploded perspective view showing a schematic configuration of the electrical junction box according to the embodiment. FIG. 3 is a perspective view showing a schematic configuration of an upper cover constituting the electrical junction box according to the embodiment. FIG. 4 is a cross-sectional perspective view of a main part of a housing constituting the electrical junction box according to the embodiment. FIG. 5 is a cross-sectional view of the main part of the housing constituting the electrical junction box according to the embodiment. 4 is a partial cross-sectional perspective view of the main part in AA of FIG. FIG. 5 is a partial cross-sectional view of a main part in BB of FIG. The X direction shown in the figure is the longitudinal direction (width direction) of the electrical junction box in the present embodiment. Of the X directions, the X1 direction is the right direction, and the X2 direction is the left direction. The Y direction shown in the figure is a depth direction of the electrical junction box in the present embodiment, and is a direction orthogonal to the longitudinal direction. Among the Y directions, the Y1 direction is the front direction, and the Y2 direction is the depth direction. The illustrated Z direction is a vertical direction of the electrical junction box in the present embodiment, and is a direction orthogonal to the longitudinal direction and the depth direction. Among the Z directions, the Z1 direction is an upward direction, and the Z2 direction is a downward direction.

  The electrical junction box 1 according to the present embodiment is mounted on a vehicle such as an automobile and distributes power supplied from a power source such as a battery to various electronic devices mounted on the vehicle via various electronic components. To do. The electrical junction box 1 is installed in a place exposed to an external environment such as an engine room of a vehicle, for example, and is connected between a power source and various electronic devices. As shown in FIG. 1, the electrical junction box 1 is integrated in a wire harness 100 and collects electronic components 200 such as connectors, fuses, relays, branching portions, and electronic control units that constitute connection processing components such as electric wires 101. And housed inside. The electrical connection box 1 may be called a junction box, a fuse box, a relay box, or the like. In the present embodiment, these are collectively called an electrical connection box. As shown in FIG. 1, the electrical junction box 1 includes a housing 2 composed of a plurality of housing members. In the electrical junction box 1, the vehicle mounting portion 10 provided outside the housing 2 is brought into contact with a vehicle-side mounting panel (not shown) or the like, and the vehicle mounting portion 10 and the vehicle-side mounting panel are connected by fastening members such as bolts. And is installed in the vehicle. The electrical junction box 1 is mounted with the depth direction (Y2 direction) side facing the mounting panel on the vehicle side in the installed state of the casing 2 installed in the engine room of the vehicle, and the front direction (Y1 direction) side is the engine side. Exposed in the room space. The electrical junction box 1 is installed in the vehicle such that the vertical direction (Z) coincides with the vertical direction or is at an arbitrary angle with respect to the vertical direction.

  Here, the wire harness 100 is, for example, a bundle of a plurality of electric wires 101 used for power supply and signal communication for connection between devices mounted on a vehicle to form an assembly part. Are connected to each device at a time. The wire harness 100 includes a plurality of electric wires 101 and an electric junction box 1 that is electrically connected to the electric wires 101. The electric wire 101 includes, for example, a conductor portion (core wire) obtained by twisting a plurality of conductive metal strands and an insulating covering portion that covers the outside of the conductor portion. In the wire harness 100, the electrical connection box 1 is electrically connected to an end portion of the bundled electric wires 101 by bundling a plurality of electric wires 101 through a connector or the like as a connecting portion. The wire harness 100 may further include a grommet, a protector, a fixture, and the like.

  As shown in FIG. 2, the housing 2 is formed in a box shape from an insulating synthetic resin, and an internal space 2a formed inside the electronic component 200 or between a power source and various electronic devices. It accommodates bus bars and the like used in the circuit configuration of the fusible link to be interposed. Here, at least a part of the electronic component 200 is connected to the electric wire 101 inserted into the internal space portion 2 a from the insertion hole formed in the housing 2. The housing 2 includes a frame 3, an upper cover 5, and a lower cover 7, and a structure in which a plurality of layers (three layers) are laminated in the order of the lower cover 7, the frame 3, and the upper cover 5 from the lower side, that is, a plurality of layers. It is the structure divided | segmented into the housing member.

  The frame 3 is a first housing member and is a part of the housing 2. As shown in FIGS. 1 and 2, the frame 3 is formed in a substantially rectangular outer peripheral shape when viewed from above in the installed state. The frame 3 has an internal space 3a. The internal space portion 3 a is a part of the internal space portion 2 a of the housing 2. In the installed state, the frame 3 is formed with a lower opening (not shown) at the lower end and an upper opening 3b at the upper end. The frame 3 is formed in a hollow shape in which the lower opening and the upper opening 3b communicate with each other through the internal space 3a in the vertical direction. In the frame 3, the internal space portion 3 a is divided into a plurality of sections, and a box in which the electronic component 200 is accommodated in the partitioned space section and the electronic component 200 are directly inserted and held through the opening 3 b. Is done. The frame 3 includes a locking hole 31, a locking groove 33, a locking receiving portion 35, and an insertion wall portion 37.

  The locking hole 31 is a first locking receiving portion and is a part of the locking mechanism 9. The locking hole 31 is a portion where the locking claw 51 provided in the upper cover 5 is inserted and the locking claw 51 is locked. The locking hole 31 is located on the outer periphery of the upper end portion of the frame 3 and is located outside the opening 3b. The locking hole 31 is located at one end (right direction) in the longitudinal direction and is formed to penetrate in the longitudinal direction.

  The locking groove 33 is a second locking receiving portion and is a part of the locking mechanism 9. The locking groove 33 is a portion in which a locking projection 53 provided on the upper cover 5 is inserted and the locking projection 53 is locked. The locking groove 33 is located on the outer periphery of the upper end portion of the frame 3 and is located outside the opening 3b. The locking groove 33 is located at the other end (left direction) in the longitudinal direction and is formed toward the depth direction.

  The latch receiving portion 35 is a first restricting portion and is formed inside the opening 3 b of the frame 3. The latch receiving portion 35 is formed along the inner periphery of the upper end portion of the frame 3. The latch receiving portion 35 is a portion that latches the latch portion 55 provided on the upper cover 5. As shown in FIG. 5, the latch receiving portion 35 has a substantially inverted L-shaped cross section viewed from the front direction, and an end portion projects toward the engagement direction (here, the left direction). Is formed. The locking receiving portion 35 has a locking surface 35a and a guide surface 35b. The locking surface 35 a is a substantially flat surface formed on the surface facing downward in the protruding portion of the locking receiving portion 35. The locking surface 35a is formed at a position facing the locking surface 55a of the locking portion 55 provided in the upper cover 5 in the vertical direction in the locked state. Here, the locked state refers to a state in which the opening 3 b is closed by the upper cover 5 and the frame 3 and the upper cover 5 are locked by the locking mechanism 9. The guide surface 35b is an inclined surface formed from the locking surface 35a toward the distal end side at the protruding portion of the locking receiving portion 35. The guide surface 35b is inclined with respect to the locking surface 35a so as to be separated from the opening 3b in the left direction.

  The insertion wall portion 37 is formed on the outer periphery of the upper side end portion when viewed from the vertical direction in the installed state. The insertion wall portion 37 is formed continuously along the outer periphery. As shown in FIG. 4, the insertion wall portion 37 is formed with a step portion 37 a in the vicinity of the distal end portion, that is, the upper side end portion. The step portion 37a is formed on the outer side of the frame 3, that is, on the outer side, in parallel with a plane (horizontal plane) perpendicular to the vertical direction. The step portion 37a is formed continuously along the outer periphery.

  The upper cover 5 is a second housing member and is a part of the housing 2. The upper cover 5 is located above the frame 3 in the installed state and closes the opening 3b on the upper side of the frame 3. The upper cover 5 is formed in a substantially rectangular shape whose outer peripheral shape is the same (including substantially the same) as the outer peripheral shape of the frame 3 when viewed from above and below. The upper cover 5 has an internal space 5a. The internal space part 5 a is a part of the internal space part 2 a of the housing 2. The upper cover 5 has an opening 5b at the lower end. The upper cover 5 is formed in a lid shape in which the internal space 5a and the opening 5b communicate with each other. The upper cover 5 is locked to the frame 3 by the locking mechanism 9 in a state where the opening 5 b is opposed to the opening 3 b of the frame 3 in the vertical direction and the opening 3 b is closed. The upper cover 5 includes a locking claw 51, a locking projection 53, a locking portion 55, and a groove portion 57.

  The locking claw 51 is a first locking part and is a part of the locking mechanism 9. The locking claw 51 is a portion that is inserted into the locking hole 31 of the frame 3 and locked by the locking hole 31. The locking claw 51 is located on the outer periphery of the lower end portion of the upper cover 5 and is located outside the opening 5b. The locking claw 51 is located at one end (right direction) in the longitudinal direction and is formed to extend in the right hand direction.

  The locking protrusion 53 is a second locking portion and is a part of the locking mechanism 9. The locking projection 53 is a portion that is inserted into the locking groove 33 of the frame 3 and locked by the locking groove 33. The locking projection 53 is located on the outer periphery of the lower end portion of the upper cover 5 and is located outside the opening 5b. The locking projection 53 is located at the other end (right direction) in the longitudinal direction and is formed in the depth direction. Thus, the locking mechanism 9 is configured by the locking hole 31 and the locking groove 33 on the frame 3 side, the locking claw 51 and the locking projection 53 on the upper cover 5 side. The locking mechanism 9 slides the upper cover 5 along the opening 3 b of the frame 3 to lock the locking claw 51 of the upper cover 5 in the locking hole 31 of the frame 3, and engages with the locking claw 51. The upper cover 5 is rotated around the locking position with the stop hole 31, the upper cover 5 closes the opening 3 b of the frame 3, and the locking protrusion 53 of the upper cover 5 is connected to the locking groove 33 of the frame 3. To lock.

  The locking part 55 is a second restricting part, and is formed at a position facing the opening 3 b of the frame 3. The locking portion 55 is a portion that is formed along the inner periphery of the lower end portion of the upper cover 5, and is locked to the locking receiving portion 35 as the upper cover 5 moves relative to the frame 3. As shown in FIG. 5, the locking portion 55 is formed so that the cross-sectional shape viewed from the front side is substantially L-shaped, and the end portion protrudes in the engaging direction (here, the right direction). ing. The locking part 55 has a locking surface 55a and a guide surface 55b. The locking surface 55 a is a substantially flat surface formed on the surface facing upward in the protruding portion of the locking portion 55. The locking surface 55a is formed at a position facing the locking surface 35a of the locking receiving portion 35 provided on the frame 3 in the vertical direction in the locked state. That is, the latch receiving portion 35 and the latch portion 55 in the present embodiment are in the latched state, and the latch surface 35a of the latch receiver 35 and the latch surface 55a of the latch portion 55 face each other in the vertical direction. Thus, the frame 3 and the upper cover 5 are restricted from being separated in the vertical direction. The guide surface 55b is an inclined surface formed from the locking surface 55a toward the distal end side at the protruding portion of the locking portion 55. The guide surface 55b is inclined with respect to the locking surface 55a so as to be separated from the opening 5b in the right direction. The guide surface 55b and the guide surface 35b are a locking operation in which the upper cover 5 is slid along the opening 3b of the frame 3 and the locking claw 51 of the upper cover 5 is locked in the locking hole 31 of the frame 3. Along with this, when the locking receiving portion 35 and the locking portion 55 are locked, they come into surface contact with each other and guide the locking surface 55a to the locking surface 35a.

  The groove portion 57 is formed on the outer periphery of the lower side end portion when viewed from the vertical direction in the installed state. As shown in FIG. 3, the groove portion 57 is formed continuously along the outer periphery. In the groove portion 57, the insertion wall portion 37 is inserted from below with the upper cover 5 closing the opening 3 b of the frame 3 and being locked to the frame 3 by the locking mechanism 9. The groove portion 57 has an opening at the lower end, and is constituted by an outer wall portion 57a, an inner wall portion 57b, and a bottom portion 57c. The outer wall portion 57a is formed on the outer periphery of the lower side end portion when viewed from the vertical direction during installation. The outer wall portion 57a is formed continuously along the outer periphery. The inner wall portion 57b is formed on the inner side, that is, the inner side of the outer wall portion 57a. The inner wall portion 57b is connected to the outer wall portion 57a via the bottom portion 57c, and is continuously formed along the outer periphery in parallel with the outer wall portion 57a.

  The lower cover 7 is a part of the housing 2. The lower cover 7 is located on the lower side of the frame 3 in the installed state and closes the opening on the lower side of the frame 3. The lower cover 7 is formed in a substantially rectangular shape whose outer peripheral shape is the same (including substantially the same) as the outer peripheral shape of the frame 3 when viewed from above and below. The lower cover 7 has an internal space (not shown). This internal space portion is a part of the internal space portion 2 a of the housing 2. Therefore, the internal space 2 a of the housing 2 is constituted by the internal space 3 a of the frame 3, the internal space 5 a of the upper cover 5, and the internal space of the lower cover 7. The lower cover 7 has an opening (not shown) at the upper end. The lower cover 7 is formed in a dish shape (tray shape) in which the internal space portion and the opening portion communicate with each other. The lower cover 7 is locked to the frame 3 by another locking mechanism different from the locking mechanism 9 with the opening of the lower cover 7 facing the opening on the lower side of the frame 3 in the vertical direction. The

  Next, the assembly procedure of the electrical junction box 1 according to the present embodiment will be described. Note that the assembly procedure of the electrical junction box 1 is not limited to that described below, and it is only necessary that the electrical junction box 1 shown in FIG. 1 is configured after assembly. May be.

  First, the worker inserts the electric wire 101 into the internal space 3 a from the lower side of the frame 3 and fixes it to the frame 3. Next, the worker assembles the electronic component 200 into the internal space 3 a from the upper side of the frame 3 through the opening 3 b and electrically connects the electronic component 200 and the electric wire 101. Next, the worker places the lower cover 7 on the lower side of the frame 3, attaches the lower cover 7 from the lower side of the frame 3, and attaches the lower cover 7 to the frame 3 by another locking mechanism different from the locking mechanism 9. Lock by mechanism. Next, as a first locking operation, the worker positions the upper cover 5 on the upper side of the frame 3, slides the upper cover 5 along the opening 3 b of the frame 3, and locks the upper cover 5. The claw 51 is locked in the locking hole 31 of the frame 3 (S1 in FIG. 2). At the same time, the locking portion 55 is locked with respect to the locking receiving portion 35. That is, when the upper cover 5 is slid along the opening 3 b of the frame 3 in order to lock the locking claw 51 in the locking hole 31, the guide surface 55 b of the locking portion 55 is the locking receiving portion. The guide surface 35b of 35 is contacted. As the upper cover 5 moves in the right direction (engagement direction), the locking portion 55 moves in the engagement direction, and the locking surface 55a moves to a position facing the locking surface 35a in the vertical direction. To do. Subsequently, as the second locking operation, the worker rotates the upper cover 5 around the locking position between the locking claw 51 and the locking hole 31 so that the upper cover 5 opens the opening 3 b of the frame 3. And the locking projection 53 of the upper cover 5 is locked in the locking groove 33 of the frame 3 (S2 in FIG. 2). At this time, the locking surface 55a and the locking surface 35a are in surface contact in the vertical direction. Thus, the assembly of the electrical junction box 1 is completed.

  Next, the case where the liquid (for example, water used at the time of washing | cleaning of a vehicle) collides with the electrical junction box 1 which concerns on this embodiment from the outside is demonstrated. When high-pressure water collides with the electrical connection box 1 not only in the downward direction but also in the lateral direction or the upward direction, a part of the water collides with the boundary portion between the frame 3 and the upper cover 5. The water colliding with this boundary portion tends to push up the outer wall portion 57a of the upper cover 5 from the lower side. However, when the latch receiving portion 35 and the latching portion 55 are in the latched state, the latching surface 35a of the latch receiving portion 35 and the latching surface 55a of the latching portion 55 face each other in the vertical direction, so that the frame 3 And the upper cover 5 are separated from each other in the vertical direction, so that a gap generated between the frame 3 and the upper cover 5 can be suppressed. Since the gap generated between the frame 3 and the upper cover 5 is suppressed, it is possible to prevent water from entering the internal space 2a.

  As described above, in the electrical junction box 1 according to the present embodiment, the frame 3 includes the latch receiving portion 35 formed along the outer periphery of the upper end portion of the frame 3 inside the opening 3b. The upper cover 5 is formed along the inner periphery of the lower end portion of the upper cover 5 at a position facing the opening 3b, and is attached to the latch receiving portion 35 as the upper cover 5 moves relative to the frame 3. A locking portion 55 for locking is provided. When the engagement receiving portion 35 and the engagement portion 55 are in the engagement state, the engagement surface 35a of the engagement reception portion 35 and the engagement surface 55a of the engagement portion 55 face each other in the vertical direction, so that the frame 3 And the upper cover 5 are restricted from being separated in the vertical direction. Thereby, for example, even when high-pressure water collides with the boundary between the frame 3 and the upper cover 5 with respect to the electrical junction box 1 and the upper cover 5 is pushed up from the lower side, the upper cover 5 is lifted. Can be prevented, and the waterproofness of the electrical junction box 1 can be improved.

  Further, in the electrical junction box 1 according to this embodiment, when the upper cover 5 is assembled to the frame 3, the locking portion 55 is locked with the locking operation of locking the locking claw 51 to the locking hole 31. Since it latches to the receiving part 35, the waterproofness of the electrical junction box 1 can be improved, without spending time at the time of the assembly of the upper cover 5, and opening and closing.

  Since the wire harness 100 described above includes the electrical junction box 1, the upper cover 5 can be prevented from being lifted by water pressure during high-pressure cleaning, and liquid such as water can enter the inside of the housing 2a. Therefore, waterproofness can be improved.

  In addition, although the electrical junction box 1 which concerns on the said embodiment is provided with one set of latching receiving part 35 and the latching | locking part 55, it is not limited to this, A plurality of sets of latching receiving part 35 and A locking portion 55 may be formed. In this case, it is preferable that a plurality of the latch receiving portions 35 are formed along the outer periphery of the upper end portion of the frame 3. It is preferable that a plurality of the locking portions 55 are formed along the inner periphery of the lower end portion of the upper cover 5 at a position facing the opening 3 b in accordance with the plurality of locking receiving portions 35. By forming a plurality of sets of locking receiving portions 35 and locking portions 55, it is possible to more effectively prevent the upper cover 5 from being lifted.

  In the electrical junction box 1, when the frame 3 and the upper cover 5 are locked by the locking mechanism 9, the outer peripheral side of the upper end portion of the frame 3 is on the inner peripheral side of the lower end portion of the upper cover 5. Although the case where it is located was demonstrated, it is not limited to this. For example, the outer peripheral side of the upper end of the frame 3 and the outer peripheral side of the lower end of the upper cover 5 may be located on the same plane in the vertical direction.

DESCRIPTION OF SYMBOLS 1 Electrical junction box 2 Housing | casing 2a, 3a, 5a Internal space part 3 Frame 5 Upper cover 7 Lower cover 9 Locking mechanism 31 Locking hole 33 Locking groove 35 Locking receiving part 35a, 55a Locking surface 35b, 55b Guide surface 37 Insertion wall portion 51 Locking claw 53 Locking protrusion 55 Locking portion 57 Groove portion 100 Wire harness 200 Electronic component

Claims (3)

A first housing member having an opening at least at an upper end, and accommodating at least an electronic component through the opening;
A second housing member that is located above the first housing member and closes the opening;
The second housing member is moved along the opening of the first housing member, and the first locking portion of the second housing member is used as the first locking receiving portion of the first housing member. The second housing member is rotated around the locking position of the first locking portion and the first locking receiving portion, and the second housing member is moved to the first housing. A locking mechanism that closes the opening of the member and locks the second locking portion of the second housing member to the second locking receiving portion of the first housing member;
With
The first housing member is
A first restricting portion formed along an outer periphery of an upper side end portion of the first housing member inside the opening;
The second housing member is
Formed along the inner periphery of the lower end of the second casing member at a position facing the opening, and with the movement of the second casing member relative to the first casing member A second restricting portion that engages with the first restricting portion;
In the locked state, the first restricting portion and the second restricting portion are such that the first locking surface of the first restricting portion and the second locking surface of the second restricting portion are opposed in the vertical direction. The electrical connection box is characterized in that the first housing member and the second housing member are restricted from being separated in the vertical direction. In the locked state by the locking mechanism, the first casing member and the second casing member are arranged such that an outer periphery of an upper side end portion of the first casing member is a lower side end of the second casing member. Located on the inner circumference side of the
The first housing member has an insertion wall portion formed continuously along the circumferential direction of the first housing member on the outer periphery of the upper end portion of the first housing member.
The second housing member is inserted into the insertion wall from the lower side of the outer periphery of the lower end of the second housing member when the opening is closed, and the second housing member The electrical junction box according to claim 1, further comprising a groove formed continuously along a circumferential direction. At least one or more wires;
A first housing member that has an opening at least at an upper end, accommodates at least an electronic component via the opening, and is positioned above the first housing member, and the opening is A second housing member to be closed; and the second housing member is moved along the opening of the first housing member to move the first locking portion of the second housing member to the first housing. The second housing member is rotated about the locking position between the first locking portion and the first locking receiving portion, and the second housing member is rotated. A latch that closes the opening of the first casing member and locks the second locking portion of the second casing member to the second locking receiving portion of the first casing member. An electrical junction box having a mechanism;
With
The first housing member is
A first restricting portion formed along an outer periphery of an upper side end portion of the first housing member inside the opening;
The second housing member is
Formed along the inner periphery of the lower end of the second casing member at a position facing the opening, and with the movement of the second casing member relative to the first casing member A second restricting portion that engages with the first restricting portion;
In the locked state, the first restricting portion and the second restricting portion are opposed in the vertical direction to the second locking surface of the second restricting portion with respect to the first locking surface of the first restricting portion. And restricting the first housing member and the second housing member from separating in the vertical direction.

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