Locking structure and electrical component storage box

Abstract

To suppress infiltration of liquid to a housing chamber.SOLUTION: A lock structure comprises: a cylinder part 10 formed by using a part of a housing wall body 123 forming a housing chamber 120b and an insertion port 120a of a conductive component 110 in a housing member 120 as a part of a peripheral wall body 11 around a cylinder axis, arranging the remaining part of the peripheral wall body 11 outside the housing chamber 120b, blocking one end in a cylinder axis direction with a bottom wall body 12 and arranging an opening 10a on the other end on a side of the insertion port 120a with respect to the bottom wall body 12; a pawl-shaped first locking part 20 projected from an outer wall surface of the remaining part of the peripheral wall body 11; and a second locking part 30 assembled to the housing member 120 by being locked to the first locking part 20 to hold a lid member 130 of which the insertion port 120a is blocked with a block wall body 131 as an assembly completion state to the housing member 120, wherein the second locking part 30 is provided on a side wall part 133 of the lid member 130 arranged opposite to the outer wall surface of a housing wall body 123 in the assembly completion state, and the opening 10a of the cylinder part 10 is covered with the block wall body 131 in the assembly completion state.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a locking structure and an electrical component housing box. [Background technology]

[0002] Conventionally, a current-carrying component housing box for housing current-carrying components such as electronic components and electric wires has been known. This current-carrying component housing box includes a housing member into which the current-carrying components are housed through an insertion opening, a cover member that is attached to the housing member to close the insertion opening, and a locking mechanism that maintains the housing member and cover member in an assembled state. The locking mechanism includes a first hook-shaped locking portion that protrudes outward from a wall of the housing member's housing chamber, and a second locking portion that is provided on a wall of the cover member that covers the wall from the outside and that locks with the first locking portion in the assembled state to maintain the assembled state. This type of locking mechanism is disclosed, for example, in Patent Documents 1 and 2 listed below. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 64-40224 [Patent Document 2] Japanese Patent Application Publication No. 8-107617 Summary of the Invention [Problem to be solved by the invention]

[0004] Since an electrical component housing box houses an electrical component in a housing chamber, it is necessary to prevent liquids such as water from entering the housing chamber. For example, in an electrical component housing box, a gap exists between the first and second locking portions in the locking structure, and it is necessary to prevent liquid from entering the housing chamber through the gap. For this reason, conventional locking structures extend the creepage distance of the gap between the walls of the surrounding housing member and the cover member to prevent liquid that has entered the gap between the first and second locking portions from flowing into the housing chamber through the gap between the walls. However, conventional locking structures still have room for improvement.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a locking structure and an electrical component housing box that can effectively prevent liquid from entering the housing chamber. [Means for solving the problem]

[0006] In order to achieve the above object, the locking structure of the present invention comprises a tubular portion in which a portion of a casing wall that forms the accommodating chamber and insertion port of an electric component in a casing member is made part of a peripheral wall around a tubular axis, and the remaining portion of the peripheral wall is positioned outside the accommodating chamber, and one end in the axial direction of the tubular portion is blocked by a bottom wall and the opening of the other end is positioned closer to the insertion port than the bottom wall, a first claw-shaped locking portion protruding from the outer wall surface of the remaining portion of the peripheral wall, and a second locking portion that locks with the first locking portion to hold a cover member that has been assembled to the accommodating member and has the insertion port blocked by the blocking wall in the assembled state to the accommodating member, wherein the second locking portion is provided on a side wall of the cover member that is positioned opposite the outer wall surface of the accommodating wall in the assembled state, and the opening of the tubular portion is covered by the blocking wall in the assembled state.

[0007] In order to achieve the above object, the present invention provides an electric component housing box including an electric component, a housing member in which the electric component is housed in a housing chamber through an insertion opening, a lid member that is assembled to the housing member to close the insertion opening with a blocking wall, and a locking structure that holds the housing member and the lid member in an assembled state, wherein the locking structure is configured such that a portion of the housing wall that forms the housing chamber and the insertion opening in the housing member is part of a peripheral wall around a cylindrical axis, and the remaining portion of the peripheral wall is disposed outside the housing chamber, and the locking structure is configured such that the remaining portion of the peripheral wall is part of a peripheral wall around the cylindrical axis. The housing is provided with a cylindrical portion having one end closed by a bottom wall and an opening at the other end positioned closer to the insertion port than the bottom wall, a first claw-shaped locking portion protruding from the outer wall surface of the remaining part of the peripheral wall, and a second locking portion that locks to the first locking portion to hold the cover member in the assembled state to the accommodating member, wherein the second locking portion is provided on a side wall of the cover member that is positioned opposite the outer wall surface of the accommodating wall in the assembled state, and the opening of the cylindrical portion is covered by the closing wall in the assembled state. [Effects of the Invention]

[0008] The locking structure of the present invention allows liquid such as water to enter the cylindrical portion through the opening when the housing member and the cover member are fully assembled. This prevents the liquid from entering the housing chamber. The current-carrying component housing box of the present invention is equipped with this locking structure and can achieve the same effects as those achieved by this locking structure. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a locking structure and an electric component housing box according to an embodiment. [Figure 2] FIG. 2 is a plan view showing the lock structure of the embodiment. [Figure 3] FIG. 3 is a cross-sectional view taken along line XX in FIG. [Figure 4] FIG. 4 is a perspective view showing the locking structure and the electrical component housing box of the embodiment with the cover member opened. [Figure 5]FIG. 5 is a plan view of the locking structure and the electrical component housing box according to the embodiment, viewed from the insertion opening side with the cover member opened. [Figure 6] FIG. 6 is a perspective view showing a modified example of the locking structure and the electrical component housing box according to the embodiment. [Figure 7] FIG. 7 is a plan view showing a modified example of the locking structure of the embodiment. [Figure 8] FIG. 8 is a cross-sectional view taken along line X1-X1 in FIG. [Figure 9] FIG. 9 is a perspective view showing a modified example of the locking structure and the electrical component housing box of the embodiment with the cover member opened. [Figure 10] FIG. 10 is a plan view of a modified embodiment of the locking structure and the electrical component housing box of the embodiment, viewed locally from the insertion opening side with the cover member opened. [Figure 11] FIG. 11 is a perspective view showing the outlet. [Figure 12] FIG. 12 is a cross-sectional view taken along line X2-X2 in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A locking structure and an electrical component housing box according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.

[0011] [Embodiment] An embodiment of a locking structure and an electric component housing box according to the present invention will be described with reference to FIGS. 1 to 12. FIG.

[0012] 1 to 12, reference numeral 1 denotes a locking structure of this embodiment. This locking structure 1 is applied to energized component housing boxes 101, 201 that house energized components, and is used to hold the components of these energized component housing boxes 101, 201 in an assembled state.

[0013] Here, an energized component refers to a component through which an electric current flows. For example, an energized component refers to an electronic component or an electronic control unit (so-called ECU). An electronic component refers to, for example, a circuit protection component such as a relay or fuse, a connector, a terminal fitting, an electric wire, a circuit board, etc. Therefore, an energized component housing box 101, 201 refers to an electrical connection box such as a relay box or a junction box, an electronic component unit that electrically connects a plurality of electrical connection objects via the housed connector, a protector that houses and protects an energized component, etc.

[0014] The electrical component housing box 101 shown here is a protector for protecting an electric wire as an electrical component 110 (FIG. 1), housing a protected portion of the electric wire and preventing interference of the protected portion with, for example, a peripheral component. The electrical component housing box 101 includes an electrical component 110, a housing member 120 in which the electrical component 110 is housed through an insertion opening 120a into a housing chamber 120b, and a lid member 130 assembled to the housing member 120 and closing the insertion opening 120a with a blocking wall 131 (FIGS. 1 to 5). The electrical component housing box 101 uses a locking structure 1A as a locking structure 1 that holds the housing member 120 and the lid member 130 in an assembled state.

[0015] The accommodating member 120 has, as accommodating walls that form an accommodating chamber 120b therein, a bottom wall 121 that is arranged along the routing path of the portion of the electric wire (current-carrying component 110) to be protected, a cantilevered first side wall 122 that hangs down from one end of the bottom wall 121 that runs along the routing path, and a cantilevered second side wall 123 that hangs down from the other end of the bottom wall 121 that runs along the routing path (FIGS. 1, 2, 4, and 5). In the accommodating member 120, an opening that connects the free ends of the first side wall 122 and the second side wall 123 is used as the insertion port 120a.

[0016] The cover member 130 has the aforementioned blocking wall 131, a cantilevered first side wall 132 hanging down from one end of the blocking wall 131 along the wiring path, and a cantilevered second side wall 133 hanging down from the other end of the blocking wall 131 along the wiring path (FIGS. 1, 2, 4, and 5). The inner wall surface of the first side wall 132 is disposed opposite the outer wall surface of the first side wall 122 of the accommodating member 120 when the assembly is complete. Furthermore, the inner wall surface of the second side wall 133 is disposed opposite the outer wall surface of the second side wall 123 of the accommodating member 120 when the assembly is complete.

[0017] In this electrical component housing box 101, the first side wall 122 of the housing member 120 and the first side wall 132 of the cover member 130 are connected by a living hinge 141 (FIGS. 4 and 5). Therefore, in this electrical component housing box 101, the housing member 120 and the cover member 130 are assembled while being rotated relative to each other around the rotation axis of the living hinge 141 until they reach the assembly completion position.

[0018] The locking structure 1A is provided between the second side wall 123 of the containing member 120 and the second side wall 133 of the cover member 130. Here, this locking structure 1A is provided in two locations (FIGS. 1 and 4).

[0019] This locking structure 1A has a cylindrical portion 10 in which a portion of a second side wall 123 serving as a storage wall forming the storage chamber 120b and the insertion opening 120a in the storage member 120 is made part of a peripheral wall 11 around the cylindrical axis, and the remaining portion of this peripheral wall 11 is positioned outside the storage chamber 120b, and one end in the cylindrical axis direction is closed by a bottom wall 12 and the opening 10a at the other end is positioned closer to the insertion opening side 120a than the bottom wall 12 (Figures 3 and 5).

[0020] The opening 10a of the tubular portion 10 is covered by the blocking wall 131 when the assembly is complete (FIG. 3). Here, when the assembly is complete, the opening 10a of the tubular portion 10 is covered by the blocking wall 131 from the side of the second opposing wall 11B described below to the vicinity of the first opposing wall 11A described below.

[0021] In the tubular portion 10, the peripheral wall 11 is formed in a rectangular cylindrical shape. Accordingly, the peripheral wall 11 has a first opposing wall 11A and a second opposing wall 11B as one pair of opposing walls, and a third opposing wall 11C and a fourth opposing wall 11D as the other pair of opposing walls (FIGS. 3 and 5). The first opposing wall 11A of the tubular portion 10 is disposed outside the accommodation chamber 120b, and the second opposing wall 11B is a part of the second side wall 123 as an accommodation wall. The third opposing wall 11C and the fourth opposing wall 11D of the tubular portion 10 are also disposed outside the accommodation chamber 120b. Therefore, the first opposing wall 11A, the third opposing wall 11C, and the fourth opposing wall 11D are the remaining portions of the peripheral wall 11 of the tubular portion 10.

[0022] The locking structure 1A further includes a claw-shaped first locking portion 20 protruding from the outer wall surface of the remaining portion of the peripheral wall body 11, and a second locking portion 30 that locks to the first locking portion 20 to hold the cover member 130 in the fully assembled state on the accommodating member 120 (Figures 1 to 5).

[0023] The first locking portion 20 protrudes from the outer wall surface of the first opposing wall 11A (FIGS. 2, 3, and 5). Here, the first opposing wall 11A has a protruding wall 13 that protrudes in the cylindrical axial direction beyond the opening 10a of the cylindrical portion 10 and interposes the second side wall 133 of the cover member 130 between it and the second side wall 123 serving as the housing wall in the assembled state (FIGS. 2, 3, and 5). The first locking portion 20 shown here protrudes from the outer wall surface of the protruding wall 13 of the first opposing wall 11A.

[0024] The second locking portion 30 is provided on the second side wall 133 of the cover member 130, which is disposed opposite the outer wall surface of the second side wall 123 serving as the housing wall in the assembled state. The second locking portion 30 has a locking piece 31 that is disposed opposite the outer wall surface of the first opposing wall 11A in the assembled state and locks with the first locking portion 20, and two flexible connecting arms 32 that protrude from the second side wall 123 and connect to the locking piece 31 across the first opposing wall 11A (FIGS. 1, 2, 4, and 5). The two connecting arms 32 connect to the locking piece 31 across the protruding wall 13 of the first opposing wall 11A. The first locking portion 20 is interposed between the two connecting arms 32 in the assembled state.

[0025] In this locking structure 1A, while the storage member 120 and the cover member 130 are being assembled while being rotated relative to each other around the rotation axis of the living hinge 141 to the assembly completion position, the locking piece 31 of the second locking portion 30 abuts against the first locking portion 20, and the locking piece 31 moves over the first locking portion 20 while bending the two connecting arms 32. Then, in this locking structure 1A, when the locking piece 31 finishes climbing over the first locking portion 20 and the storage member 120 and the cover member 130 reach the assembly completion state, the bending of the two connecting arms 32 is released. As a result, the locking piece 31 is disposed opposite the outer wall surface of the first opposing wall 11A, and is disposed at a position where it can be locked by the first locking portion 20 to maintain the storage member 120 and the cover member 130 in the assembly completion state when the storage member 120 and the cover member 130 attempt to open around the rotation axis of the living hinge 141.

[0026] When liquid such as water is splashed onto the accommodating member 120 and the cover member 130 when they are fully assembled, this locking structure 1A first allows the liquid to enter the tubular portion 10 through the opening 10a. For example, the liquid may enter through a gap that forms between the second side wall 133 of the cover member 130 and the protruding wall 13 of the first opposing wall 11A, and then be guided to the opening 10a of the tubular portion 10 (FIG. 3). Therefore, this locking structure 1A can prevent the liquid from entering the accommodating chamber 120b.

[0027] Here, the tubular portion 10 may be provided with a through-hole (not shown) that communicates with the outside of the storage chamber 120b. For example, in this tubular portion 10, a through-hole that communicates with the bottom wall 12 is provided in the first opposing wall 11A. This allows this locking structure 1A to discharge liquid that has entered the tubular portion 10 to the outside through the through-hole, thereby preventing liquid that has accumulated in the tubular portion 10 from flowing into the storage chamber 120b.

[0028] Next, the electrical component housing box 201 shown here is an electronic component unit that houses a plurality of connectors as electrical components 210 and electrically connects a plurality of electrical connection objects via these connectors (FIGS. 6 and 8 to 10). This electrical component housing box 201 includes electrical components 210, a housing member 220 in which the electrical components 210 are housed through insertion openings 220a into housing chambers 220b, and a lid member 230 that is assembled to the housing member 220 and closes the insertion opening 220a with a blocking wall 231 (FIGS. 6 to 10). In this electrical component housing box 201, a locking structure 1B that holds the housing member 220 and the lid member 230 in an assembled state is used as the locking structure 1 (FIGS. 6 to 10).

[0029] The accommodating member 220 has a cylindrical outer peripheral wall 221 with open ends, which serves as an accommodating wall that defines an accommodating chamber 220b therein, and partition walls 222 that partition the space inside the outer peripheral wall 221 into a plurality of cylindrical accommodating chambers 220b with open ends (FIGS. 9 and 10). In this accommodating member 220, one opening of each accommodating chamber 220b located at one opening of the outer peripheral wall 221 is used as the insertion opening 220a, and the other opening of each accommodating chamber 220b located at the other opening of the outer peripheral wall 221 is also used as the insertion opening 220a. In the accommodating member 220 shown here, in addition to the accommodating chamber 220b whose insertion opening 220a is blocked by the blocking wall 231 of the cover member 230, other accommodating chambers 220b that accommodate the current-carrying component 210 are provided.

[0030] The lid member 230 has the aforementioned closing wall 231. Here, the outer peripheral wall 221 of the accommodating member 220 is formed in a rectangular cylindrical shape, and the closing wall 231 closes the insertion openings 220a of the respective accommodating chambers 220b located at one opening of the outer peripheral wall 221. For this reason, the closing wall 231 is formed in a rectangular flat plate shape. The lid member 230 shown here has cantilevered side walls 232 hanging down from three sides except for one side (FIGS. 6 to 10). The inner wall surface of the side wall 232 is disposed opposite the outer wall surface of the outer peripheral wall 221 of the accommodating member 220 when the assembly is complete.

[0031] In this electrical component housing box 201, one of the four walls of the outer peripheral wall 221 of the housing member 220 is connected to one side of the closing wall 231 where there is no side wall 232 by a living hinge 241 (FIG. 9). Therefore, in this electrical component housing box 201, the housing member 220 and the cover member 230 are assembled by rotating them relative to each other around the rotation axis of the living hinge 241 until they reach the assembly completion position.

[0032] The locking structure 1B is provided between the outer peripheral wall 221 of the containing member 120 and the side wall 232 of the cover member 130. Here, a locking structure 1B is provided for each of the three walls that make up the side wall 232 (FIGS. 6 and 9).

[0033] This locking structure 1B has a cylindrical portion 50 in which a portion of an outer peripheral wall 221 serving as a storage wall forming the storage chamber 220b and the insertion opening 220a in the storage member 220 is made into a portion of a peripheral wall 51 around the cylindrical axis, and the remaining portion of this peripheral wall 51 is arranged outside the storage chamber 220b, and one end in the cylindrical axis direction is closed by a bottom wall 52 and an opening 50a at the other end is arranged closer to the insertion opening 220a than the bottom wall 52 (Figures 8 to 10).

[0034] The opening 50a of the tubular portion 50 is covered by the closing wall 231 when assembly is complete (FIG. 8). Here, by using a through-hole 71 (described later), the opening 50a of the tubular portion 50 from the side of the second opposing wall 51B described below to the vicinity of the first opposing wall 51A described below is covered by the closing wall 231 when assembly is complete. The cover member 230 also has a rectangular half 233 suspended from the inner wall surface of the closing wall 231 (FIGS. 8 to 10). The half 233 is inserted into the tubular portion 50 through the opening 50a when assembly is complete (FIG. 8).

[0035] In the tubular portion 50, the peripheral wall 51 is formed in a rectangular tubular shape. Accordingly, the peripheral wall 51 has a first opposing wall 51A and a second opposing wall 51B as one pair of opposing walls, and a third opposing wall 51C and a fourth opposing wall 51D as the other pair of opposing walls (FIGS. 8 and 10). The first opposing wall 51A of the tubular portion 50 is disposed outside the accommodation chamber 220b, and the second opposing wall 51B forms part of the outer peripheral wall 221 as the accommodation wall. The third opposing wall 51C and the fourth opposing wall 51D on the first opposing wall 51A side of the tubular portion 50 are also disposed outside the accommodation chamber 220b. Therefore, in this tubular portion 50, the second opposing wall 51B side of the third opposing wall 51C and the fourth opposing wall 51D also become part of the outer peripheral wall 221, and the first opposing wall 51A side of the third opposing wall 51C and the fourth opposing wall 51D and the first opposing wall 51A become the remaining parts of the outer peripheral wall 51.

[0036] When assembly is complete, the outer wall surface of the remaining portion of the peripheral wall 51 is disposed opposite the inner wall surface of the side wall 232 of the cover member 230. The side wall 232 is formed in a shape such that the portion that faces the outer wall surface of the remaining portion of the peripheral wall 51 conforms to the outer peripheral surface. Furthermore, at least the portion of the side wall 232 that faces the outer wall surface of the remaining portion of the peripheral wall 51 is made flexible.

[0037] The locking structure 1B further includes a claw-shaped first locking portion 60 protruding from the outer wall surface of the remaining portion of the peripheral wall body 51, and a second locking portion 70 that locks onto the first locking portion 60 to hold the cover member 230 in the fully assembled state on the accommodating member 220 (Figures 6 to 10).

[0038] The first locking portion 60 protrudes from the outer wall surface of the first opposing wall 51A (FIGS. 7, 8, and 10). Here, the first opposing wall 51A has a protruding wall 53 that protrudes in the cylindrical axial direction beyond the opening 50a of the cylindrical portion 50 and is disposed opposite, with a gap therebetween, a part of the blocking wall 231 that becomes part of the peripheral portion of the through-hole 71 (described later) when the assembly is complete (FIGS. 7, 8, and 10).

[0039] The second locking portion 70 is provided on the side wall 232 of the cover member 230, which is disposed opposite the outer wall surface of the outer peripheral wall 221 serving as the housing wall in the assembled state. As described above, the side wall 232 is disposed opposite the outer wall surface of the remaining portion of the peripheral wall 51, and therefore is disposed opposite not only the outer wall surface of the outer peripheral wall 221 but also the outer wall surface of the first opposing wall 51A. Therefore, in the second locking portion 70, the first locking portion 60 protruding from the outer wall surface of the first opposing wall 51A is exposed in the assembled state, thereby creating a lockable state between the second locking portion 70 and the first locking portion 60. The second locking portion 70 shown here extends from the side wall 232 to the closing wall 231 of the cover member 230 and has a through-hole 71 that exposes the first locking portion 60 in the assembled state (FIGS. 6 to 10).

[0040] Furthermore, the second locking portion 70 has a locking piece 72 that protrudes from the side wall 232 of the cover member 230 and is disposed opposite the outer wall surface of the first opposing wall 51A in the assembled state to be locked to the first locking portion 60 (FIGS. 6 to 10). The locking piece 72 also serves as part of the periphery of the through hole 71 in the second locking portion 70.

[0041] In this locking structure 1B, while assembling the accommodating member 220 and the cover member 230 while rotating them relatively around the rotation axis of the living hinge 241 to the assembly completion position, the locking piece 72 of the second locking portion 70 abuts against the first locking portion 60, and the locking piece 72 moves over the first locking portion 60 while deflecting the side wall body 232 together with the locking piece 72. Then, in this locking structure 1B, when the locking piece 72 finishes climbing over the first locking portion 60 and the accommodating member 220 and the cover member 230 reach the assembly completion state, the deflection of the locking piece 72 and the side wall body 232 is released. As a result, the locking piece 72 is positioned opposite the outer wall surface of the first opposing wall 51A, and is positioned so that when the storage member 220 and the cover member 230 attempt to open around the rotation axis of the living hinge 241, it can be locked by the first locking portion 60 to maintain the storage member 220 and the cover member 230 in a fully assembled state.

[0042] When liquid such as water is splashed onto the accommodating member 220 and the cover member 230 when they are fully assembled, this locking structure 1B first allows the liquid to enter the tubular portion 50 through the opening 50a. For example, the liquid enters through a gap that is formed between the closing wall 231 of the cover member 230 and the protruding wall 53 of the first opposing wall 51A, and is then guided to the opening 50a of the tubular portion 50 (FIG. 8). Therefore, this locking structure 1B can prevent the liquid from entering the accommodating chamber 220b.

[0043] Here, the tubular portion 50 has through-holes (hereinafter referred to as "discharge ports") 54 that communicate with the outside of the storage chamber 220b (FIGS. 11 and 12). For example, in this tubular portion 50, two discharge ports 54 that communicate with the bottom wall 52 are provided in the first opposing wall 51A. This allows this locking structure 1B to discharge liquid that has entered the tubular portion 50 to the outside through the discharge ports 54, thereby preventing liquid that has accumulated in the tubular portion 50 from flowing into the storage chamber 220b.

[0044] As described above, the locking structure 1 (1A, 1B) of this embodiment can effectively prevent liquid from entering the housing chamber 120b (220b). The electrical component housing box 101 (201) of this embodiment is equipped with the locking structure 1 (1A, 1B) and can achieve the same effects as those achieved by the locking structure 1 (1A, 1B). [Explanation of symbols]

[0045] 1, 1A, 1B lock structure 10,50 cylinder part 10a,50a opening 11,51 Surrounding wall 11A,51A 1st opposing wall 11B,51B 2nd opposing wall 12,52 Bottom wall 13 Projecting wall 20,60 First locking part 30,70 Second locking part 31 Locking piece 32 Connecting arm 54 Outlet 71 Through hole 72 Locking piece 101,201 Electrical parts storage box 110,210 Electrically-carrying parts 120,220 Storage member 120a, 220a insertion port Containment rooms 120b and 220b 123 Second side wall (housing wall) 130,230 Lid member 131,231 Blocking wall 133 Second side wall (side wall) 221 Peripheral wall (housing wall) 232 Side wall

Claims

1. a cylindrical portion in which a portion of a housing wall forming a housing chamber and an insertion port for a current-carrying component in the housing member is made to be a portion of a peripheral wall around a cylindrical axis, and the remaining portion of the peripheral wall is disposed outside the housing chamber, and one end in the cylindrical axis direction is closed by a bottom wall and an opening at the other end is disposed closer to the insertion port than the bottom wall; a claw-shaped first engaging portion protruding from an outer wall surface of the remaining portion of the peripheral wall body; a second locking portion that locks with the first locking portion to hold the cover member assembled to the accommodating member and closing the insertion opening with a blocking wall body in a completely assembled state with the accommodating member; Equipped with the second engaging portion is provided on a side wall of the cover member that is disposed opposite an outer wall surface of the housing wall in the assembled state, The locking structure is characterized in that the opening of the cylindrical portion is covered by the closing wall in the assembled state.

2. The cylindrical portion has a first opposing wall of one pair of opposing walls of the rectangular cylindrical peripheral wall disposed outside the storage chamber, and a second opposing wall of the pair of opposing walls is a part of the storage wall, the first opposing wall body has a protruding wall that protrudes in the cylindrical axis direction beyond the opening of the cylindrical portion and interposes the side wall body between itself and the accommodation wall body in the assembled state, the first engaging portion protrudes from an outer wall surface of the first opposing wall body, the second locking portion has a locking piece that is disposed opposite an outer wall surface of the first opposing wall body in the assembly completion state and that locks with the first locking portion, and two flexible connecting arms that protrude from the side wall body and straddle the first opposing wall body and are connected to the locking piece, 2. The locking structure according to claim 1, wherein the first engaging portion is interposed between the two connecting arms in the assembled state.

3. The cylindrical portion has a first opposing wall of one pair of opposing walls of the rectangular cylindrical peripheral wall disposed outside the storage chamber, a second opposing wall of the pair of opposing walls being a part of the storage wall, and an outer wall surface of the remaining portion disposed opposite an inner wall surface of the flexible side wall of the cover member, the first engaging portion protrudes from an outer wall surface of the first opposing wall body, 2. The locking structure according to claim 1, wherein the second locking portion has a through hole that extends from the side wall body to the closing wall body of the cover member and exposes the first locking portion when the assembly is complete, and a locking piece that protrudes from the side wall body and is positioned opposite an outer wall surface of the first opposing wall when the assembly is complete, to lock onto the first locking portion.

4. 3. The locking structure according to claim 1, wherein the cylindrical portion has an outlet that communicates with the outside of the storage chamber.

5. Current-carrying parts; a housing member into which the current-carrying component is housed through an insertion opening; a cover member that is attached to the housing member to close the insertion opening with a blocking wall; a locking structure that holds the housing member and the cover member in an assembled state; Equipped with The locking structure includes: a cylindrical portion in which a portion of a storage wall that forms the storage chamber and the insertion opening in the storage member is a portion of a peripheral wall around a cylindrical axis, and the remaining portion of the peripheral wall is disposed outside the storage chamber, and one end in the cylindrical axis direction is closed by a bottom wall and an opening at the other end is disposed closer to the insertion opening than the bottom wall; a claw-shaped first engaging portion protruding from an outer wall surface of the remaining portion of the peripheral wall body; a second locking portion that locks with the first locking portion to hold the cover member in a state in which the cover member is completely assembled to the housing member; Equipped with the second engaging portion is provided on a side wall of the cover member that is disposed opposite an outer wall surface of the housing wall in the assembled state, The opening of the cylindrical portion is covered by the closing wall in the assembled state.

Images