Cover structure

Abstract

To improve the durability of an open state retention mechanism.SOLUTION: A cover member 10 has outer wall surfaces 11a, 12a of a first cover 11 and a second cover 12 arranged opposite each other in the second cover position, and includes a protrusion 30 inserted into an inserted portion 20 with a gap therebetween in the second cover position, and the wall surface at a position farthest from a living hinge 13 in the inserted portion is a plane parallel to the rotation axis of the living hinge and the opposing arrangement direction, and is formed as a first locking surface 20a with which the protrusion can be engaged, and the wall surface at a position closest to the living hinge in the inserted portion is a wall surface arranged opposite to the first locking surface with a gap therebetween, and is a plane parallel to the rotation axis of the living hinge and the opposing arrangement direction, and is formed as a second locking surface 20b with which the protrusion can be engaged, and the first locking surface and the second locking surface lock the protrusion when the second cover in the second cover position is rotated toward the first cover position by a reaction force accompanying the flexural deformation of the living hinge.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a cover structure. [Background technology]

[0002] Conventionally, vehicles such as automobiles are equipped with various electrically connected objects housed in a housing such as a case. The housing is provided with a cover structure including a housing member that houses the electrically connected objects and a cover member that is attached to the housing member. The housing member has a connector housing portion that is a housing space that houses the electrical connection portions of multiple electrically connected objects in a connected state and that also has an internal space that serves as a work space when performing work related to the electrical connection portions (such as attaching / detaching the electrical connection portions or connecting the electrical connection portions to each other). The cover member includes a first cover that is attached to the housing member, a second cover that covers the internal space of the connector housing portion together with the connected electrical connection portions and exposes the internal space of the connector housing portion when work is performed, and a living hinge that connects the first cover to the second cover and opens and closes the second cover between a closed position and an open position relative to the connector housing portion. This type of cover structure is disclosed, for example, in Patent Document 1 listed below. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2021-157979 Summary of the Invention [Problem to be solved by the invention]

[0004] In a cover structure, it is desirable to maintain the second cover in an open state relative to the connector housing in consideration of ease of operation in the interior space. For example, the cover structure of Patent Document 1 above is provided with an open state maintaining mechanism that hooks the second cover onto a locking claw of the first cover in the open position to maintain the open state. In this cover structure, repeated opening and closing of the second cover also repeatedly activates the open state maintaining mechanism. Therefore, in this cover structure, it is necessary to ensure the durability of the open state maintaining mechanism in order to maintain good ease of operation in the interior space. Conventional cover structures have room for improvement in this regard.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a cover structure that can improve the durability of the open state retention mechanism. [Means for solving the problem]

[0006] The present invention provides a cover member having a first cover having an inserted portion formed on its outer wall surface, a second cover having a protrusion formed on its outer wall surface, and a living hinge that connects the first cover and the second cover and rotates the second cover relative to the first cover between a first cover position and a second cover position, and that positions the outer wall surfaces of the first cover and the second cover opposite each other at the second cover position and inserts the protrusion into the inserted portion with a gap at the second cover position, and the wall surface at the position farthest from the living hinge in the inserted portion is located between the rotation axis of the living hinge and the second cover position. the wall surface closest to the living hinge in the inserted portion is a wall surface positioned opposite the first locking surface at a distance from the first locking surface, and is formed as a second locking surface in a plane parallel to the rotation axis of the living hinge and the opposing arrangement direction of the outer wall surfaces at the second cover position, and is capable of locking the protrusion; the first locking surface and the second locking surface lock the protrusion when the second cover at the second cover position is rotated toward the first cover position by a reaction force accompanying the flexural deformation of the living hinge. [Effects of the Invention]

[0007] The cover structure of the present invention inserts the protrusion into the receiving portion with a gap when in the second cover position, and prevents excessive load from being generated between the receiving portion and the protrusion when inserting or removing the protrusion into or from the receiving portion, and when the protrusion is inserted into the receiving portion. Therefore, this cover structure can reduce friction between the protrusion and the receiving portion when inserting or removing the protrusion into or from the receiving portion. Furthermore, this cover structure can prevent deformation of the protrusion and the receiving portion when inserting or removing the protrusion into or from the receiving portion, and when the protrusion is inserted into the receiving portion. Therefore, the cover structure of the present invention can improve the durability of the second cover's open state retention mechanism (the receiving portion and the protrusion). [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a cover structure according to an embodiment. [Figure 2] FIG. 2 is an exploded perspective view showing the cover structure of the embodiment. [Figure 3] FIG. 3 is a perspective view showing the cover member. [Figure 4] FIG. 4 is a plan view of the cover member as seen from the outer wall surface side. [Figure 5] FIG. 5 is a plan view of the cover member as seen from the inner wall surface side. [Figure 6] FIG. 6 is a schematic side view of the cover member in the first cover position (closed position). [Figure 7] FIG. 7 is a schematic side view of the cover member in the second cover position (open position). [Figure 8] FIG. 8 is a schematic diagram showing the state in which the protrusion is locked in the inserted portion, as viewed from the side of the cover member. [Figure 9] FIG. 9 is a schematic diagram of the inclined surface of the second locking surface as viewed from the side of the cover member. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cover structure 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 the embodiment.

[0010] [Embodiment] One embodiment of a cover structure according to the present invention will be described with reference to FIGS.

[0011] Reference numeral 1 in Figures 1 to 9 indicates the cover structure of this embodiment. The cover structure 1 includes a cover member 10 (Figures 1 to 5). The cover structure 1 may also include not only the cover member 10 but also a housing member 50 that houses an electrically connected object (not shown) and to which the cover member 10 is assembled (Figures 1 and 2). In this example, the housing member 50 is also included. The cover member 10 and the housing member 50 are molded from an insulating material such as synthetic resin.

[0012] The electrically connected object may be, for example, a conductive part such as a bus bar or a circuit conductor part, a terminal fitting for a terminal-attached electric wire, an electrical part such as a relay or a fuse, or a battery terminal. When the cover member 10 and the housing member 50 are assembled together, they form a housing that houses the electrically connected object therein. The housing may be, for example, a case for a bus bar module or a box body for an electrical connection box. The cover member 10 may be one of the components of this housing, and may be, for example, a cover part that houses and covers a battery terminal therein.

[0013] Here, an example is given of a busbar module that is assembled to a battery module, and that includes a plurality of busbars that connect battery cells together, circuit conductor components (for example, a flexible printed circuit board on which a conductor pattern as a circuit conductor is formed for each busbar), a housing member 50 that houses these, and a cover member 10 that is assembled to this housing member 50 to protect the busbars, etc. (not shown).

[0014] The cover member 10 has a first cover 11, a second cover 12, and a living hinge 13 that connects the first cover 11 and the second cover 12 and allows the second cover 12 to rotate relative to the first cover 11 between a first cover position and a second cover position (Figures 1 to 5).

[0015] In this cover member 10, when in the first cover position, the first cover 11, living hinge 13, and second cover 12 are arranged in a straight line (FIGS. 1 to 6). Then, in this cover member 10, the second cover 12 is rotated relative to the first cover 11 from the first cover position to the second cover position about the axis of rotation of the living hinge 13, and in the second cover position, the outer wall surfaces 11a, 12a of the first cover 11 and the second cover 12 are arranged to face each other (FIG. 7). Here, the flat surfaces of the outer wall surfaces 11a, 12a are arranged to face each other in a parallel state.

[0016] The first cover position shown here refers to a closed position in which the first cover 11 and the second cover 12 cover the accommodating member 50. The second cover position shown here refers to an open position in which the first cover 11 covers the accommodating member 50, while the second cover 12, which is in the closed position, is opened to expose the accommodating member 50.

[0017] The accommodating member 50 has a main body 51 in which electrically connected objects (here, bus bars and circuit conductor components) are accommodated, and a connector accommodating portion 52 which is an accommodating space in which the electrical connection portions of multiple electrically connected objects are accommodated in a connected state, and which has an internal space 52a which also serves as a working space when performing work related to the electrical connection portions (for example, work to attach / detach the electrical connection portions, work to connect the electrical connection portions to each other, etc.) (Figures 1 and 2).

[0018] The electrical connection portion refers to, for example, an electrical connection portion of a circuit conductor component with another component, a terminal connection portion of a terminal fitting of a terminal-equipped electric wire, an electrical connection portion such as a male tab of a bus bar, a terminal connection portion of an electrical component, or a terminal connection portion of a battery terminal. A plurality of electrical connection portions are housed in the internal space 52a of the connector accommodating portion 52 as an electrical connection portion that is physically and electrically connected. For example, the electrical connection portion of a circuit conductor component is disposed in this internal space 52a, and the terminal connection portion of the terminal fitting of the terminal-equipped electric wire is attached to or detached from the electrical connection portion.

[0019] The first cover 11 is attached to the main body 51 (FIGS. 1 and 2). The first cover 11 is attached to the main body 51 and held in the closed position by a locking mechanism 61. The locking mechanism 61 includes a first engaging portion 61a provided on the main body 51 and a second engaging portion 61b provided on the first cover 11 (FIGS. 1 to 3). When the first cover 11 is attached to the main body 51 in the closed position, the locking mechanism 61 engages the first engaging portion 61a with the second engaging portion 61b so that the first cover 11 is held in the closed position. The locking mechanism 61 shown here holds the first cover 11 in the closed position relative to the main body 51 by hooking the claw-shaped first engaging portion 61a onto the second engaging portion 61b.

[0020] When in the closed position, which serves as the first cover position, the second cover 12 covers the internal space 52a of the connector accommodating portion 52 together with the connected electrical connection portions (FIGS. 1 and 2). The second cover 12 is assembled to the connector accommodating portion 52 in the closed position. The second cover 12 is assembled to the connector accommodating portion 52 in the closed position and is held in the closed position by a locking mechanism 62. The locking mechanism 62 includes a first engaging portion 62a provided on the connector accommodating portion 52 and a second engaging portion 62b provided on the second cover 12 (FIGS. 1 to 3). When the second cover 12 is assembled to the connector accommodating portion 52 in the closed position, the locking mechanism 62 engages the first engaging portion 62a with the second engaging portion 62b so that the second cover 12 is held in the closed position. The locking mechanism 62 shown here keeps the second cover 12 in a closed position relative to the connector accommodating portion 52 by hooking a first engagement portion 62a, which is a claw, onto a second engagement portion 62b.

[0021] Meanwhile, this second cover 12 exposes the internal space 52a of the connector accommodating portion 52 when in the open position, which serves as the second cover position for performing work related to the electrical connection portions. The living hinge 13 opens and closes the second cover 12 between a closed position and an open position relative to the connector accommodating portion 52. Thus, in this cover member 10, by rotating the second cover 12 from the closed position to the open position about the rotation axis of the living hinge 13 relative to the connector accommodating portion 52, the internal space 52a of the connector accommodating portion 52 is exposed, allowing work related to the electrical connection portions in this internal space 52a to be performed.

[0022] The living hinge 13 has flexibility and can displace the rotation axis, for example, in a parallel direction, by its own bending deformation.

[0023] Here, the first cover 11 has an inserted portion 20 formed on its outer wall surface 11a (FIGS. 1 to 7). The second cover 12 has a protrusion 30 formed on its outer wall surface 12a (FIGS. 1 to 7). When the cover member 10 is in the second cover position (open position), the protrusion 30 is inserted into the inserted portion 20 with a gap therebetween. The inserted portion 20 and the protrusion 30 are formed into shapes, for example, described below, to achieve such an inserted state. In this cover member 10, the inserted portion 20 and the protrusion 30 act as a retention mechanism (hereinafter referred to as the "open state retention mechanism") that keeps the second cover 12 in the second cover position (open position).

[0024] The inserted portion 20 has a wall surface 20a arranged at a position farthest from the living hinge 13, and a wall surface 20b arranged at a position closest to the living hinge 13 (FIGS. 1 to 7). The wall surface 20a arranged at a position farthest from the living hinge 13 in the inserted portion 20 is a plane parallel to the rotation axis of the living hinge 13 and the opposing arrangement direction of the outer wall surfaces 11a, 12a of the first cover 11 and the second cover 12 in the second cover position (open position), and is formed as a first locking surface 20a capable of locking the protrusion 30. The wall surface 20b arranged at a position closest to the living hinge 13 in the inserted portion 20 is a wall surface arranged opposite the first locking surface 20a with a gap therebetween. This wall surface 20b is a plane parallel to the rotation axis of the living hinge 13 and the opposing arrangement direction of the outer wall surfaces 11a, 12a of the first cover 11 and the second cover 12 in the second cover position (open position), and is formed as a second engagement surface 20b capable of engaging the protrusion 30.

[0025] In the cover member 10, a reaction force caused by the flexural deformation of the living hinge 13 acts on the second cover 12 in the second cover position (open position), and this reaction force tries to return the second cover 12 from the second cover position (open position) to the first cover position (closed position). Here, at the second cover position (open position), a gap is formed between the inserted portion 20 and the protrusion 30. Therefore, the reaction force caused by the flexural deformation of the living hinge 13 causes the second cover 12 in the second cover position (open position) to begin rotating around the axis of the rotation shaft of the living hinge 13 toward the first cover position (closed position). The first locking surface 20a and the second locking surface 20b lock the protrusion 30 when the reaction force caused by the flexural deformation of the living hinge 13 causes the second cover 12 from the second cover position (open position) to rotate toward the first cover position (closed position) (FIG. 8).

[0026] The first locking surface 20a locks the protrusion 30 on the wall surface, while the second locking surface 20b locks the protrusion 30 at the end of the wall surface on the side of the entry start point when the protrusion 30 is inserted into the inserted portion 20, or at the intersection portion where the protrusion 30 intersects with the wall surface on the side of the entry start point.

[0027] As described above, the cover structure 1 of this embodiment inserts the protrusion 30 into the insertion portion 20 with a gap therebetween when in the second cover position (open position). When the protrusion 30 is inserted into or removed from the insertion portion 20, and when the protrusion 30 is inserted into the insertion portion 20, no excessive load is generated between the insertion portion 20 and the protrusion 30. Therefore, this cover structure 1 can prevent friction between the protrusion 30 and the insertion portion 20 when the protrusion 30 is inserted into or removed from the insertion portion 20. Furthermore, this cover structure 1 can prevent deformation of the insertion portion 20 and the protrusion 30 when the protrusion 30 is inserted into or removed from the insertion portion 20, and when the protrusion 30 is inserted into the insertion portion 20. Therefore, the cover structure 1 of this embodiment can improve the durability of the open state retention mechanism (insertion portion 20, protrusion 30) of the second cover 12. On the other hand, the cover structure 1 of this embodiment can lock the protrusion 30 with the first locking surface 20a and the second locking surface 20b of the inserted portion 20 at a position similar to the second cover position (open position), thereby holding the second cover 12 at a position where work related to the electrical connection can be performed in the internal space 52a of the connector accommodating portion 52. Therefore, the cover structure 1 of this embodiment can improve the durability of the open state holding mechanism (inserted portion 20, protrusion 30) while ensuring the ease of work related to the electrical connection in the internal space 52a of the connector accommodating portion 52.

[0028] Furthermore, the cover structure 1 of this embodiment does not require the provision of punch holes in the mold for forming the open state retention mechanism (inserted portion 20, protrusion 30).

[0029] Furthermore, the cover structure 1 of this embodiment does not press-fit the inserted portion 20 and the protrusion 30, and does not require high dimensional accuracy under strict tolerance control, which helps prevent increases in cost. Furthermore, the cover structure 1 of this embodiment does not press-fit the inserted portion 20 and the protrusion 30, and can prevent deformation of the inserted portion 20 and the protrusion 30, so no reinforcement is required to prevent that deformation.

[0030] Incidentally, it is desirable that, in the course of rotating second cover 12 from the first cover position (closed position) to the second cover position (open position), cover member 10 causes protrusion 30 to abut against first locking surface 20a of inserted portion 20, and that protrusion 30 receives a reaction force from first locking surface 20a, thereby displacing the position of the rotation axis of living hinge 13, thereby inserting protrusion 30 into inserted portion 20. As a result, in this cover member 10, protrusion 30 advances along first locking surface 20a while receiving force from first locking surface 20a and living hinge 13, and when protrusion 30 completely enters inserted portion 20, the force is released. Therefore, when the worker rotates the second cover 12 from the first cover position (closed position) to the second cover position (open position), this cover member 10 allows the worker to feel with his or her fingers that the protrusion 30 has finished being inserted into the insertion portion 20 and the second cover 12 has finished reaching the second cover position (open position), and allows the worker to recognize the timing to release the second cover 12. In the cover structure 1 of this embodiment, when the worker releases the second cover 12, the second cover 12 begins to return from the second cover position (open position) toward the first cover position (closed position) due to the reaction force associated with the flexural deformation of the living hinge 13, and the first locking surface 20a and the second locking surface 20b lock the protrusion 30.

[0031] Furthermore, it is desirable that second locking surface 20b has an inclined surface 20c at an end on the side of the entry start point when protrusion 30 is inserted into inserted portion 20, which is gradually separated from first locking surface 20a the closer to the entry start point (FIG. 9). In this case, for example, second locking surface 20b may lock protrusion 30 at its inclined surface 20c, or may lock protrusion 30 at an intersection where the plane of its main portion (a plane parallel to the rotation axis of living hinge 13 and the opposing arrangement direction of outer wall surfaces 11a, 12a of first cover 11 and second cover 12 at the second cover position (open position)) intersects with inclined surface 20c. In the cover structure 1 of this embodiment, when the protrusion 30 engaged with the first locking surface 20a and the second locking surface 20b is removed from the inserted portion 20 and the second cover 12 is rotated toward the first cover position (closed position), the inclined surface 20c can prevent strong interference between the second locking surface 20b and the protrusion 30. Therefore, the cover structure 1 of this embodiment can improve the workability when removing the protrusion 30 engaged with the first locking surface 20a and the second locking surface 20b from the inserted portion 20.

[0032] Specifically, the inserted portion 20 of this embodiment has a recess 21 formed by recessing the outer wall surface 11a of the first cover 11, a first protrusion 22 protruding from the outer wall surface 11a of the first cover 11, and a second protrusion 23 protruding from the outer wall surface 11a of the first cover 11 closer to the living hinge 13 than the first protrusion 22 (Figures 1 to 5).

[0033] The recess 21 shown here has a first wall surface 21a located farthest from the living hinge 13 and a second wall surface 21b located closest to the living hinge 13, and is formed as a rectangular recess with the first wall surface 21a and the second wall surface 21b formed in a rectangular planar shape parallel to each other and arranged opposite each other (Figures 1 to 3).

[0034] The first protrusion 22 has a wall surface 22a that is flush with the first wall surface 21a of the recess 21 and protrudes from the outer wall surface 11a of the first cover 11 (FIGS. 1 to 3). The first locking surface 20a is formed by the first wall surface 21a of the recess 21 and the wall surface 22a of the first protrusion 22. Here, the first protrusion 22 is formed in the shape of a rectangular flat plate, thereby forming the rectangular first locking surface 20a.

[0035] In the first cover 11, support ribs 24a protrude from the outer wall surface 11a (FIGS. 1 to 5) to support the first protrusion 22 from the rear side of the wall surface 22a and suppress flexural deformation of the first protrusion 22 so that the force received by the protrusion 30 can be returned to the protrusion 30 as a reaction force. Here, two sides of the rectangular first protrusion 22 are supported by the respective support ribs 24a.

[0036] Further, second protrusion 23 has wall surface 23a that is flush with second wall surface 21b of recess 21 and protrudes from outer wall surface 11a of first cover 11 (FIG. 3). Second locking surface 20b is formed by second wall surface 21b of recess 21 and wall surface 23a of second protrusion 23. Here, second protrusion 23 is formed in the shape of a rectangular plate, thereby forming rectangular second locking surface 20b.

[0037] In the first cover 11, support ribs 24b protrude from the outer wall surface 11a (FIGS. 1 to 5) to support the second protrusion 23 from the rear side of the wall surface 23a and suppress flexural deformation of the second protrusion 23 so that the force received from the protrusion 30 by the second protrusion 23 can be returned as a reaction force to the protrusion 30. Here, two sides of the rectangular second protrusion 23 are supported by the respective support ribs 24b.

[0038] The protrusion 30 in this embodiment is formed in the shape of a rectangular flat plate having a plane parallel to the opposing arrangement direction of the first engagement surface 20a and the second engagement surface 20b, and has a first protrusion 31 and a second protrusion 32 arranged opposite each other with a gap between their respective planes and protruding from the outer wall surface 12a of the second cover 12 (Figures 1 to 5).

[0039] In this protrusion 30, the corners 30a, 30a connected to the respective sides of the first protrusion 31 and the second protrusion 32 that are located farthest from the living hinge 13 are engaged with the first locking surface 20a (FIG. 8). Also, in this protrusion 30, the sides 30b, 30b closest to the living hinge 13 of the first protrusion 31 and the second protrusion 32 are engaged with the second locking surface 20b (FIG. 8).

[0040] In the second cover 12, a support rib 33 protrudes from the outer wall surface 12a to connect the flat surfaces of the first protrusion 31 and the second protrusion 32 and suppress flexural deformation of the first protrusion 31 and the second protrusion 32 so as to prevent the force applied from the first and second protrusions 31, 32 to the first and second locking surfaces 20a, 20b from escaping (FIGS. 1 to 5). Here, the first protrusion 31 and the second protrusion 32 are supported by two support ribs 33.

[0041] In this cover structure 1, when the second cover 12 in the second cover position (open position) rotates toward the first cover position (closed position) due to a reaction force caused by the flexural deformation of the living hinge 13, the wall surface 22a of the first protruding portion 22 on the first locking surface 20a of the inserted portion 20 locks the corners 30a, 30a of the first protruding portion 31 and the second protruding portion 32 of the protruding portion 30, and the wall surface 23a of the second protruding portion 23 on the second locking surface 20b of the inserted portion 20 locks the sides 30b, 30b of the first protruding portion 31 and the second protruding portion 32 of the protruding portion 30. The first locking surface 20a locks the corners 30a, 30a of the first protruding portion 31 and the second protruding portion 32 on the wall surface 22a of the first protruding portion 22. On the other hand, the second engagement surface 20b engages the respective edge portions 30b, 30b of the first protrusion 31 and the second protrusion 32 at the end portion on the wall surface 23a of the second protrusion 23 on the side of the intrusion starting point of the protrusion 30, or at the intersection portion where it intersects with the wall surface 23a on the side of the intrusion starting point. [Explanation of symbols]

[0042] 1 Cover structure 10 Cover member 11 First Cover 11a Exterior wall surface 12 Second Cover 12a Exterior wall surface 13 Living Hinge 20 Inserted part 20a Wall surface (first locking surface) 20b Wall surface (second locking surface) 20c slope 21 Recess 21a First wall 21b 2nd wall 22 1st protrusion 22a Wall 23 Second protrusion 23a Wall 30 protrusion 50 Storage member 51 Main body 52 Connector receiving section 52a Interior space

Claims

1. a cover member having a first cover having an inserted portion formed on an outer wall surface, a second cover having a protrusion formed on the outer wall surface, and a living hinge that connects the first cover and the second cover and rotates the second cover relative to the first cover between a first cover position and a second cover position, wherein the outer wall surfaces of the first cover and the second cover are arranged opposite each other at the second cover position, and the protrusion is inserted into the inserted portion with a gap at the second cover position; a wall surface of the insertion portion farthest from the living hinge, the wall surface being a plane parallel to the rotation axis of the living hinge and the opposing arrangement direction of the outer wall surfaces at the second cover position, and formed as a first locking surface capable of locking the protrusion; a wall surface of the insertion portion closest to the living hinge that is disposed opposite the first locking surface at a distance, the wall surface being formed as a second locking surface that is parallel to the rotation axis of the living hinge and the direction in which the outer wall surfaces face each other at the second cover position, and that is capable of locking the protrusion; A cover structure characterized in that the first locking surface and the second locking surface lock the protrusion when the second cover at the second cover position rotates toward the first cover position due to a reaction force accompanying the flexural deformation of the living hinge.

2. The cover structure described in claim 1, characterized in that, while the second cover is being rotated from the first cover position to the second cover position, the cover member abuts the protrusion on the first engagement surface of the inserted portion, and the protrusion receives a reaction force from the first engagement surface, thereby displacing the position of the rotation axis of the living hinge, thereby inserting the protrusion into the inserted portion.

3. The cover structure described in claim 1, characterized in that the second engagement surface has an inclined surface at the end side of the starting point of insertion when the protrusion is inserted into the inserted portion, which is gradually moved away from the first engagement surface as it approaches the starting point of insertion.

4. the inserted portion has a recess formed by recessing the outer wall surface of the first cover, a first protruding portion protruding from the outer wall surface of the first cover, and a second protruding portion protruding from the outer wall surface of the first cover on a side closer to the living hinge than the first protruding portion, the first locking surface is formed by a first wall surface of the recess located farthest from the living hinge and a wall surface of the first protrusion that is flush with the first wall surface, The cover structure described in claim 1, characterized in that the second engagement surface is formed by a second wall surface in the recess at a position closest to the living hinge and a wall surface of the second protrusion that is flush with the second wall surface.

5. a housing member for housing an object to be electrically connected and to which the cover member is attached; The housing member has a main body portion in which electrical connection objects are housed, and a connection body housing portion which is a housing space in which electrical connection portions of the plurality of electrical connection objects are housed in a connected state and which is provided with an internal space which also serves as a work space when performing work related to the electrical connection portions, the first cover is attached to the main body, the second cover covers the internal space of the connection body accommodating portion together with the electrical connection portion in a connected state when in a closed position as the first cover position, and exposes the internal space of the connection body accommodating portion when in an open position as the second cover position for performing the work, 5. The cover structure according to claim 1, wherein the living hinge opens and closes the second cover between the closed position and the open position relative to the connector accommodating portion.

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