Assembly structure of protective cover and electrical connection box

Abstract

To provide an assembly structure for a protective cover and an electrical connection box that can improve assembly workability. [Solution] The assembly structure 1 of the protective cover 10 includes a protective cover that exposes the opening 113 of the main body of the object to be assembled 110 in an open position relative to the object to be assembled, and covers the opening with the cover body 11 in a closed position relative to the object to be assembled, a rotating shaft 21 provided on one of the object to be assembled and the protective cover, and a bearing 22 provided on the other of the object to be assembled and the protective cover, having a clamping portion 23 that clamps the rotating shaft, wherein the bearing is configured to allow the protective cover to rotate around the axis of the rotating shaft between an open position and a closed position, the protective cover is configured to be assembled to the object to be assembled by inserting the rotating shaft between the clamping portions in the assembly position, and the rotating shaft has a concave portion 21a formed concavely with respect to the outer circumferential surface 21s of the rotating shaft in the portion facing the clamping portion when the protective cover is in the assembly position.

Description

Technical Field

[0001] The present invention relates to an assembly structure of a protective cover and an electrical connection box.

Background Art

[0002] Conventionally, in an electrical connection box, a protective cover may be provided to cover an electrical connection portion exposed from an opening. Such a protective cover is configured to be opened around the axis of a rotation axis, for example, so that connection work of a conductive component to the electrical connection portion can be performed. For example, Patent Document 1 discloses an electrical connection box including a block and a frame that houses the block. In the electrical connection box of Patent Document 1, a terminal support portion that supports a rescue terminal portion of a bus bar in a protruding state and a first cover support portion provided adjacent to the terminal support portion are formed on the block, and an insertion hole through which the rescue terminal portion is inserted when the block is housed in the frame and a second cover support portion provided adjacent to the insertion hole are formed on the frame. The terminal cover is rotatably supported by being sandwiched between the first cover support portion and the second cover support portion when the block is housed in the frame.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the electrical connection box as described in Patent Document 1 above, for example, there is room for further improvement from the viewpoint of the workability of assembling the protective cover.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to provide an assembly structure of a protective cover and an electrical connection box that can improve the assembly workability. [Means for solving the problem]

[0006] The protective cover assembly structure according to the present invention comprises a protective cover that exposes an opening in the main body of the object to be assembled when in an open position relative to the object to be assembled, and covers the opening with the cover body when in a closed position relative to the object to be assembled; a rotating shaft provided on one of the object to be assembled and the protective cover; and a bearing provided on the other of the object to be assembled and having a clamping portion that clamps the rotating shaft, wherein the bearing is configured to allow the protective cover to rotate around the axis of the rotating shaft between the open position and the closed position, and the protective cover is configured to be assembled to the object to be assembled by inserting the rotating shaft between the clamping portions at an assembly position further in the opening direction than the open position, and the rotating shaft has a concave portion formed concavely with respect to the outer circumferential surface of the rotating shaft in the portion facing the clamping portion when the protective cover is in the assembly position.

[0007] The electrical connection box according to the present invention comprises: a housing member that houses an electrical connection member provided with an electrical connection portion for physically and electrically connecting conductive components of a mating device, and exposing the electrical connection portion through an opening; a protective cover that exposes the opening of the housing member and the electrical connection portion when in an open position relative to the housing member, and covers the opening and the electrical connection portion with a cover body when in a closed position relative to the housing member; a rotating shaft provided on one of the housing member and the protective cover; and a bearing provided on the other of the housing member and the protective cover, having a clamping portion for clamping the rotating shaft, wherein the bearing is configured to allow the protective cover to rotate around the axis of the rotating shaft between the open position and the closed position, and the protective cover is configured to be assembled to the housing member by inserting the rotating shaft between the clamping portions at an assembly position further in the opening direction than the open position, and the rotating shaft has a concave portion formed concavely with respect to the outer circumferential surface of the rotating shaft in the portion facing the clamping portion when the protective cover is in the assembly position. [Effects of the Invention]

[0008] The protective cover assembly structure and electrical connection box according to the present invention have the effect of improving assembly workability. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is an exploded perspective view showing the assembly structure of the protective cover and the electrical connection box according to the embodiment. [Figure 2] Figure 2 is a perspective view showing the assembly structure of the protective cover and the electrical connection box according to the embodiment, and represents the protective cover in its assembly position. [Figure 3] Figure 3 is a perspective view showing the protective cover of the embodiment. [Figure 4] Figure 4 is a plan view showing the cover member of the embodiment. [Figure 5] Figure 5 is a cross-sectional view along line AA in Figure 2. [Figure 6] Figure 6 is a plan view showing the assembly structure of the protective cover according to the embodiment, and represents the protective cover at the assembly position. [Figure 7] Figure 7 is a perspective view of the protective cover assembly structure according to the embodiment, seen from a different angle, and shows the protective cover in its assembly position. [Figure 8] Figure 8 is a perspective view showing the assembly structure of the protective cover and the electrical connection box according to the embodiment, and represents the protective cover in the open position. [Figure 9] Figure 9 is a perspective view of the protective cover assembly structure and electrical connection box according to the embodiment, viewed from a different angle, and shows the protective cover in the open position. [Figure 10] Figure 10 is a cross-sectional view along line BB in Figure 8. [Figure 11] Figure 11 is a perspective view showing the assembly structure of the protective cover and the electrical connection box according to the embodiment, and represents the protective cover in the closed position. [Modes for carrying out the invention]

[0010] The assembly structure of the protective cover and the electrical connection box according to an embodiment of the present invention will be described in detail below with reference to the drawings. However, this embodiment does not limit the present invention. Furthermore, the components in the following embodiments include those that are easily conceivable by those skilled in the art or that are substantially identical.

[0011] [Embodiment] The embodiments will be described with reference to Figures 1 to 11. Figure 1 is an exploded perspective view showing the assembly structure of the protective cover and the electrical connection box according to the embodiment, Figure 2 is a perspective view showing the assembly structure of the protective cover and the electrical connection box according to the embodiment, Figure 3 is a perspective view showing the protective cover according to the embodiment, Figure 4 is a plan view showing the cover member according to the embodiment, Figure 5 is a cross-sectional view of line AA in Figure 2, Figure 6 is a plan view showing the assembly structure of the protective cover according to the embodiment, Figure 7 is a perspective view of the assembly structure of the protective cover according to the embodiment from a different angle, Figure 8 is a perspective view showing the assembly structure of the protective cover and the electrical connection box according to the embodiment, Figure 9 is a perspective view of the assembly structure of the protective cover and the electrical connection box according to the embodiment from a different angle, Figure 10 is a cross-sectional view of line BB in Figure 8, and Figure 11 is a perspective view showing the assembly structure of the protective cover and the electrical connection box according to the embodiment. Note that Figures 6 and 7 show the protective cover in the assembled position. Also, Figures 8 and 9 show the protective cover in the open position. Figure 11 also shows the protective cover in the closed position.

[0012] As shown in Figure 1, the assembly structure 1 of the protective cover 10 according to this embodiment includes the protective cover 10, a rotating shaft 21, and a bearing 22. The protective cover 10 is a member that exposes the opening 113 of the object to be assembled 110 when in an open position relative to the object to be assembled 110, and covers the opening 113 with the cover body 11 when in a closed position relative to the object to be assembled 110.

[0013] In an embodiment, an electric connection box 101 is shown as an example of an object to which the assembling structure 1 of the protective cover 10 is applied. The electric connection box 101 is what is called a so-called relay box, junction box, or the like. The electric connection box 101 is connected, for example, between a power source such as a battery and various electrical devices mounted in a vehicle via electric wires or the like. The electric connection box 101 distributes the electric power supplied from the power source to various electrical devices in the vehicle.

[0014] The electric connection box 101 includes a housing member as an object 110 to be assembled with the protective cover 10. In the following description, the "object 110 to be assembled" may sometimes be described by replacing it with the "housing member 110". In the embodiment, the housing member 110 includes a cover member 111 and a main body portion 112. The main body portion 112 is a box body provided with an opening at the upper side, and is configured to be able to accommodate electronic components (such as relays) and electrical connection members 120 and the like.

[0015] The electrical connection member 120 is, for example, a bus bar made of metal, and is provided with an electrical connection portion 121 that physically and electrically connects a mating conductive component. The cover member 111 is a member that covers the opening of the main body portion 112 from above. An opening 113 is formed in the cover member 111, and it is assembled to the main body portion 112 so as to expose the electrical connection portion 121 from the opening 113.

[0016] In the embodiment, the rotating shaft 21 is provided on the housing member 110 (cover member 111), and the bearing 22 is provided on the protective cover 10. The bearing 22 has a clamping portion 23 that clamps the rotating shaft 21, and the protective cover 10 is configured to be rotatable around the axis of the rotating shaft 21 between an open position and a closed position. The protective cover 10 exposes the opening 113 of the cover member at the open position with respect to the cover member 111, and covers the opening 113 with the cover main body 11 at the closed position with respect to the cover member 111.

[0017] In the following description, in the circumferential direction of the rotating shaft 21, the direction along the direction from the open position to the closed position is referred to as the closing direction, and the direction along the direction from the closed position to the open position is referred to as the opening direction.

[0018] The assembly structure 1 of the protective cover 10 according to this embodiment includes a temporary holding mechanism 30 that temporarily holds the protective cover 10 in an assembly position further in the opening direction than the open position. Here, the assembly position is the position in which the protective cover 10 is assembled to the cover member 111 of the housing member 110 (assembly target 110), and is the position opposite to the closed position with respect to the open position. The protective cover 10 exposes the opening 113 even in the assembly position.

[0019] The assembly position in this embodiment corresponds to the position where the protective cover 10 is rotated 90 degrees from the closed position toward the open position. The open position is a position between the closed position and the assembly position, where the protective cover 10 exposes the opening 113 when it is released from the temporary holding mechanism 30 at the assembly position.

[0020] The temporary holding mechanism 30 temporarily holds the protective cover 10 in the assembly position by locking the first locked body 32 of the protective cover 10 to the first locking body 31 of the cover member 111 in the assembly position. As shown in Figure 1, the first locking body 31 has a locking portion 31a at least on one of its ends when viewed from the axial direction of the rotation shaft 21, which locks the first locked body 32 in the temporary holding position and keeps it in that position (Figure 5). In this embodiment, the first locking body 31 is formed as a plate-like portion that protrudes from the cover member 111 toward the opposite side (upwards) from the main body portion 112.

[0021] More specifically, the first locking body 31 is a cantilevered beam shape with the cover member 111 side as the fixed end and protruding, and is formed in a rectangular single-piece shape with each end, as viewed from the axial direction of the rotation shaft 21, having sides that are aligned with the direction of protrusion from the cover member 111. In the first locking body 31 of this embodiment, a portion of its side is used as a locking portion 31a. The first locking body 31 of this embodiment has locking portions 31a at each end as viewed from the axial direction of the rotation shaft 21. The protective cover 10 is provided with a first locked body 32 for each locking portion 31a.

[0022] The first locking body 32 has a cantilever-shaped flexible portion 32a that protrudes from the cover body 11 in the opening direction and is capable of bending deformation in the axial direction of the rotation shaft 21, and a locking projection 32b that protrudes from the free end of the flexible portion 32a in the axial direction of the rotation shaft 21 and is locked to the locking portion 31a in a temporary holding position and is maintained in that position (Figures 3 and 5).

[0023] The flexible portion 32a is positioned opposite the locking portion 31a in the axial direction of the rotation axis 21 at the assembly position. Furthermore, at the assembly position, the free end of the flexible portion 32a is positioned on the opening side of the locking portion 31a. In other words, in this temporary holding mechanism 30, the protective cover 10 is kept in the assembly position by sandwiching the locking portion 31a between the cover body 11 and the locking projection 32b at the assembly position.

[0024] The protective cover 10 is configured to be assembled to the cover member 111 by inserting the rotating shaft 21 between the clamping portions 23 at the assembly position. As shown in Figures 1 and 2, the protective cover 10 is assembled to the cover member 111 in an assembly direction opposite to the protruding direction of the first locking body 31.

[0025] Figure 4 is a plan view of the cover member 111 as seen from the main body 112 side. In Figure 4, the protective cover 10 is omitted from the illustration for illustrative purposes. As shown in Figure 4, the rotating shaft 21 has a concave portion 21a formed in a concave shape relative to the outer circumferential surface 21s of the rotating shaft 21. The concave portion 21a is formed on the rotating shaft 21 in the portion facing the clamping portion 23 when the protective cover 10 is in the assembled position.

[0026] In this embodiment, the rotating shaft 21 is formed in a cylindrical shape extending along the axial direction, and the concave portion 21a is formed as a notch created by partially cutting out the cylindrical shape. In this embodiment, the bottom surface of the concave portion 21a is formed as a flat surface.

[0027] As shown in Figures 1 and 3, the clamping portion 23 of the embodiment includes two first clamping portions 23a located on one side of the rotating shaft 21 and one second clamping portion 23b located on the other side of the rotating shaft 21 when viewed from the axial direction of the rotating shaft 21. The first clamping portions 23a and the second clamping portions 23b are arranged alternately along the axial direction. That is, the second clamping portion 23b is located between the two first clamping portions 23a in the axial direction.

[0028] Furthermore, as shown in Figure 4, the concave portion 21a of the embodiment includes two first concave portions 21aa and one second concave portion 21ab. The first concave portion 21aa is formed in a one-to-one relationship with the first clamping portion 23a in the portion facing the first clamping portion 23a when the protective cover 10 is in the assembled position. The second concave portion 21ab is formed in the portion facing the second clamping portion 23b when the protective cover 10 is in the assembled position. In other words, in the embodiment, the second concave portion 21ab is located between the two first concave portions 21aa in the axial direction of the rotation axis 21.

[0029] On the rotating shaft 21, the width W1 in the direction in which the protective cover 10 is clamped by the clamping portion 23 when the protective cover 10 is in the assembled position is formed to be smaller than the width W2 in the direction perpendicular to that direction and the axial direction (Figure 5). In addition, each of the first concave portions 21aa is formed with a width W3 (length in the axial direction) such that a part of the corresponding first clamping portion 23a can be accommodated inside, and the second concave portion 21ab is formed with a width W4 (length in the axial direction) such that a part of the second clamping portion 23b can be accommodated inside (Figure 4). Furthermore, the concave portion 21a is formed to a depth such that the protective cover 10 does not easily come off when clamped by the clamping portion 23 of the bearing 22.

[0030] As shown in Figure 3, each of the first clamping portions 23a includes a first bearing portion 23aa, a first protruding portion 23ab, and a first tip portion 23ac. The first bearing portion 23aa, the first protruding portion 23ab, and the first tip portion 23ac are provided in this order from the cover body 11 side and are formed as a plate shape overall. The second clamping portion 23b includes a second bearing portion 23ba, a second protruding portion 23bb, and a second tip portion 23bc. The second bearing portion 23ba, the second protruding portion 23bb, and the second tip portion 23bc are provided in this order from the cover body 11 side and are formed as a plate shape overall.

[0031] The first bearing portion 23aa, together with the second bearing portion 23ba, is a portion that clamps the rotating shaft 21 and is assembled to be slidable with respect to the rotating shaft 21. In this embodiment, the first bearing portion 23aa is formed as an arc-shaped portion in which the surface facing the rotating shaft 21 is recessed on the side opposite to the rotating shaft 21. Similarly, the second bearing portion 23ba is formed as an arc-shaped portion in which the surface facing the rotating shaft 21 is recessed on the side opposite to the rotating shaft 21. The protective cover 10 rotates around the axis of the rotating shaft 21 by the sliding of the first bearing portion 23aa and the second bearing portion 23ba against the outer circumferential surface 21s of the rotating shaft 21.

[0032] The first protruding portion 23ab is formed as an arc-shaped portion that protrudes toward the second clamping portion 23b when viewed from the axial direction of the rotating shaft 21, and the second protruding portion 23bb is formed as an arc-shaped portion that protrudes toward the first clamping portion 23a when viewed from the axial direction of the rotating shaft 21. When viewed from the axial direction of the rotating shaft 21, the gap between the first protruding portion 23ab and the second protruding portion 23bb is narrower than the diameter of the rotating shaft 21.

[0033] The first tip portion 23ac is inclined such that, when viewed from the axial direction of the rotating shaft 21, the surface on the second clamping portion 23b side moves away from the second clamping portion 23b as it moves from the base end towards the tip end. The second tip portion 23bc is inclined such that, when viewed from the axial direction of the rotating shaft 21, the surface on the first clamping portion 23a side moves away from the first clamping portion 23a as it moves from the base end towards the tip end. In other words, when viewed from the axial direction of the rotating shaft 21, the distance between the first tip portion 23ac and the second tip portion 23bc is formed to become narrower as it approaches the cover body 11. When viewed from the axial direction of the rotating shaft 21, the distance between the first protruding portion 23ab and the second protruding portion 23bb is narrower than other points between the first clamping portion 23a and the second clamping portion 23b.

[0034] The bearing 22 receives the rotating shaft 21 between the first tip portion 23ac and the second tip portion 23bc, and the gap between the first protruding portion 23ab and the second protruding portion 23bb is widened by the rotating shaft 21, allowing the rotating shaft 21 to move over the first protruding portion 23ab and the second protruding portion 23bb and be clamped between the first bearing portion 23aa and the second bearing portion 23ba, thereby being assembled to the rotating shaft 21.

[0035] In the assembly structure 1 of the protective cover 10 of this embodiment, since the first concave portion 21aa and the second concave portion 21ab are formed on the rotating shaft 21, the amount of displacement when the first clamping portion 23a and the second clamping portion 23b clamp the rotating shaft can be reduced when the bearing 22 is assembled to the rotating shaft. That is, when the rotating shaft 21 passes between the first protruding portion 23ab and the second protruding portion 23bb, the first protruding portion 23ab passes through the first concave portion 21aa, and the second protruding portion 23bb passes through the second concave portion 21ab. The amount of displacement of the bearing 22 required for the rotating shaft 21 to pass through the gap between the first protruding portion 23ab and the second protruding portion 23bb can be reduced by the amount of recess of the first concave portion 21aa and the second concave portion 21ab formed on the rotating shaft 21. Therefore, the force required by the worker to move the rotating shaft 21 through the gap between the first protruding portion 23ab and the second protruding portion 23bb, and to the space between the first bearing portion 23aa and the second bearing portion 23ba, can be reduced. Thus, the assembly structure 1 of the protective cover 10 of this embodiment can improve the workability of assembly when assembling the protective cover 10 to the object to be assembled 110. In addition, the first concave portion 21aa and the second concave portion 21ab also function as guide portions that guide the first clamping portion 23a and the second clamping portion 23b to a predetermined position when the rotating shaft 21 is inserted between the first clamping portion 23a and the second clamping portion 23b.

[0036] Furthermore, as shown in Figures 5 and 6, in the embodiment, the protective cover 10 sandwiches the locking portion 31a between the cover body 11 and the locking projection 32b when assembled. In the assembled position, the protective cover 10 is in a state where the locking portion 31a is sandwiched between the cover body 11 and the locking projection 32b for each of the first locking bodies 32. In other words, the protective cover 10 has a space 12 surrounded by the cover body 11, a pair of flexible portions 32a, and a pair of locking projections 32b, and the first locking body 31 is inserted into this space 12 when the protective cover 10 is in the assembled position.

[0037] The protective cover 10 is assembled to the cover member 111 by inserting the rotating shaft 21 between the clamping portions 23 at the assembly position. The first locking body 31 is inserted into the space 12 from its free end in conjunction with the assembly operation of the protective cover 10 to the cover member 111. That is, the pair of first locking bodies 32 are configured to allow the first locking body 31 to be inserted into the space 12 from its free end in conjunction with the assembly operation of the protective cover 10 to the cover member 111. Once the first locking body 31 is inserted into the space 12, the protective cover 10 is temporarily held in the assembly position by the temporary holding mechanism 30 (Figure 7).

[0038] For example, the electrical junction box 101 is manufactured at one location and then transported to another location to physically and electrically connect the mating conductive component to the electrical junction 121. In the electrical junction box 101 of this embodiment, the protective cover 10 is temporarily held in the assembly position when the electrical junction box 101 is transported from the manufacturing location to the location where the mating conductive component is connected. After connecting the mating conductive component, the worker displaces the protective cover 10 from the assembly position to the closed position.

[0039] In the temporary holding mechanism 30 of the embodiment, the locking projection 32b has an input portion 32c that, when the protective cover 10 in the assembly position is rotated in the closing direction, applies a force to the contact position with the locking portion 31a, receives a reaction force from the contact position with the locking portion 31a, and deforms the flexible portion 32a to overcome the locking portion 31a (Figure 3).

[0040] The input section 32c is a wall surface that is inclined with respect to the axial direction of the rotation axis 21 and positioned opposite the locking section 31a at the contact position with the locking section 31a. It is formed as an inclined surface in which the amount of protrusion from the free end of the flexible section 32a decreases as it moves toward the closing direction. Therefore, in the protective cover 10, when a force is applied toward the closing direction at the assembly position, the input section 32c of the locked projection 32b contacts the locking section 31a and applies force. The input section 32c receives the reaction force of this force from the contact position with the locking section 31a, causing the flexible section 32a to bend and deform. In the protective cover 10 of this embodiment, as the force is continuously applied toward the closing direction, the amount of bending deformation of the flexible section 32a increases, and the locked projection 32b overcomes the locking section 31a. With this configuration, the protective cover 10 can reach the open position and then be displaced all the way to the closed position.

[0041] In this embodiment, the locking projection 32b is formed mainly of a cylinder having an axis parallel to the axis of the rotation axis 21, with the free end surface of this cylinder being an inclined surface.

[0042] Furthermore, when performing maintenance and inspection of the electrical junction box 101, the worker can rotate the protective cover 10 from the closed position to the open position. As shown in Figures 8 to 10, when the protective cover 10 is in the open position, the movement of the locking projection 32b in the opening direction is locked by the locking portion 31a. With this configuration, the assembly structure 1 of the protective cover 10 according to this embodiment can prevent the protective cover 10 from returning to the assembly position after it has been displaced from the assembly position to the open position.

[0043] The locking portion 31a and the locked projection 32b are shaped such that when a force is applied to the protective cover 10 in the open position, the locking portion 31a continues to lock the locked projection 32b, thereby keeping the protective cover 10 in the open position. Specifically, as shown in Figure 10, by bringing the arc-shaped outer surface of the main part of the locked projection 32b into contact with the locking portion 31a, the locking portion 31a can continue to lock the locked projection 32b.

[0044] Furthermore, when the protective cover 10 is in the range from the open position to the closed position, the clamping portion 23 of the bearing 22 clamps the outer circumferential surface 21s of the rotating shaft 21, rather than the bottom surface of the concave portion 21a (Figure 7). In other words, when the protective cover 10 is in the range from the open position to the closed position, the first bearing portion 22aa and the second bearing portion 22ba clamp the outer circumferential surface 21s of the rotating shaft 21. When attempting to remove the protective cover 10 from the rotating shaft 21 when the protective cover 10 is in the range from the open position to the closed position, the protruding portions of the bearing 22 (first protruding portion 23ab, second protruding portion 23bb) do not pass through the concave portion of the rotating shaft 21 (first concave portion 21aa, second concave portion 21ab). Therefore, it is necessary to widen the gap between the first protruding portion 23ab and the second protruding portion 23bb more than when attempting to remove the protective cover 10 from the rotating shaft 21 in the assembled position. Therefore, when the protective cover 10 is in the range from the open position to the closed position, the clamping portion 23 becomes even less likely to detach from the rotating shaft 21 than when the protective cover 10 was in the assembled position. The temporary holding mechanism 30 of the embodiment can restrict the protective cover 10 from returning from the open position to the assembled position, thus maintaining a state in which the protective cover 10 is less likely to detach from the rotating shaft 21.

[0045] Furthermore, as shown in Figures 8 and 9, the assembly structure 1 of the protective cover 10 and the electrical connection box 101 of this embodiment are provided with a holding mechanism 40 that keeps the protective cover 10 in the closed position. The holding mechanism 40 includes a second locking body 41 provided on the cover member 111 of the housing member 110 (assembly target 110) and a second locked body 42 provided on the protective cover 10, and the protective cover 10 is kept in the closed position by locking these together (Figure 11).

[0046] The second locking body 41 has a groove 41a, and a part of the peripheral wall of this groove 41a is used as a locking portion 41b. The second locked body 42 has a cantilevered and flexible single-piece shape formed flexible piece portion 42a, and a claw portion 42b protruding from one plane of the flexible piece portion 42a.

[0047] Furthermore, as shown in Figure 10, the protective cover 10 is formed such that, in the open position, its center of gravity Cg is eccentrically positioned towards the closed position rather than vertically above the axis of rotation 21. Therefore, if no force is applied, the protective cover 10 in the open position will return to the closed position by its own weight (Figure 11).

[0048] In the above explanation, an example configuration was used in which the assembly object 110 is provided with a rotating shaft 21 and the protective cover 10 is provided with a bearing 22, but the configuration is not limited to this. For example, the protective cover 10 may be provided with a rotating shaft 21 and the assembly object 110 may be provided with a bearing 22.

[0049] As described above, the assembly structure 1 of the protective cover 10 according to the embodiment includes a protective cover 10 that exposes the opening 113 of the main body of the object to be assembled 110 when in an open position relative to the object to be assembled 110, and covers the opening 113 with the cover body 11 when in a closed position relative to the object to be assembled 110, a rotating shaft 21 provided on one of the object to be assembled 110 and the protective cover 10, and a bearing 22 provided on the other of the object to be assembled 110 and the protective cover 10, having a clamping portion 23 that clamps the rotating shaft 21. The bearing 22 is configured such that the protective cover 10 can rotate around the axis of the rotating shaft 21 between an open position and a closed position, and the protective cover 10 is configured to be assembled to the object to be assembled 110 by inserting the rotating shaft 21 between the clamping portions 23 at an assembly position further in the opening direction than the open position, and the rotating shaft 21 has a concave portion 21a formed concavely with respect to the outer circumferential surface 21s of the rotating shaft 21 at the portion facing the clamping portion 23 when the protective cover 10 is in the assembly position.

[0050] In the assembly structure 1 of the protective cover 10 according to the embodiment, the rotating shaft 21 has a concave portion 21a formed on the portion facing the clamping portion 23 when the protective cover 10 is in the assembly position. The assembly structure 1 of the protective cover 10 according to the embodiment can reduce the amount of displacement when the clamping portion 23 clamps the rotating shaft when assembling the bearing 22 to the rotating shaft. The assembly structure 1 of the protective cover 10 according to the embodiment has the effect of improving assembly workability because the bearing 22 can be easily assembled to the rotating shaft 21.

[0051] Furthermore, in the assembly structure 1 of the protective cover 10 according to the embodiment, the clamping portion 23 includes two first clamping portions 23a arranged on one side of the rotating shaft 21 and one second clamping portion 23b arranged on the other side of the rotating shaft 21 when viewed from the axial direction of the rotating shaft 21, the first clamping portions 23a and the second clamping portions 23b are arranged alternately along the axial direction, and the concave portion 21a includes a first concave portion 21aa facing the first clamping portion 23a and a second concave portion 21ab facing the second clamping portion 23b when the protective cover 10 is in the assembly position on the rotating shaft 21, the first concave portion 21aa and the second concave portion 21ab are formed with flat bottom surfaces.

[0052] In the assembly structure 1 of the protective cover 10 according to the embodiment, when the protective cover 10 is in the assembly position, concave portions 21a (first concave portion 21aa, second concave portion 21ab) are formed in the portion facing the first clamping portion 23a and the portion facing the second clamping portion 23b. The rotating shaft 21 is inserted into the first clamping portion 23a and the second clamping portion 23b by widening the gap between the first clamping portion 23a and the second clamping portion 23b. In the assembly structure 1 of the protective cover 10 according to the embodiment, when assembling the protective cover 10, the rotating shaft 21 is inserted between the first clamping portion 23a and the second clamping portion 23b with the concave portions 21a (first concave portion 21aa, second concave portion 21ab) and the clamping portion 23 (first clamping portion 23a, second clamping portion 23b) facing each other. Since the bearing 22 is assembled to clamp the portion of the rotating shaft 21 where the width is partially reduced due to the formation of the concave portion 21a, the amount of displacement of the bearing 22 when it is assembled to the rotating shaft 21 can be reduced. The assembly structure 1 of the protective cover 10 according to this embodiment has the effect of improving assembly workability because the bearing 22 can be easily assembled to the rotating shaft 21.

[0053] Furthermore, the assembly structure 1 of the protective cover 10 according to the embodiment further includes a temporary holding mechanism 30 for temporarily holding the protective cover 10 in the assembly position, the temporary holding mechanism 30 includes a first locking body 31 formed on the object to be assembled 110 and a first locked body 32 formed on the protective cover 10, the first locking body 31 has a locking portion 31a at least one of the two ends in the axial direction of the rotating shaft 21 that locks the first locked body 32 to temporarily hold the protective cover 10 in the assembly position, and the first locked body 32 is from the cover body 11 The protective cover 10 in the assembly position has a cantilever-shaped flexible portion 32a that protrudes toward the opposite side from the closed position and is capable of bending deformation in the axial direction, and a locking projection 32b that protrudes axially from the free end of the flexible portion 32a and is locked to the locking portion 31a. The locking projection 32b has an input portion 32c that receives a reaction force from the contact position when a force is applied to the contact position with the locking portion 31a when the protective cover 10 in the assembly position is rotated toward the closed position, causing the flexible portion 32a to bend and deform, thereby allowing it to overcome the locking portion 31a.

[0054] The assembly structure 1 of the protective cover 10 according to this embodiment includes a temporary holding mechanism 30 for temporarily holding the protective cover 10 in the assembly position. The temporary holding mechanism 30 includes a first locking body 31 formed on the object to be assembled 110 and a first locked body 32 formed on the protective cover 10. With this configuration, for example, a supplier that delivers a product to which the assembly structure 1 of the protective cover 10 is applied can deliver the product with the protective cover 10 temporarily held in the assembly position (i.e., with the protective cover 10 open). Then, since the worker can start working with the protective cover 10 temporarily held in the assembly position, the work can be performed efficiently.

[0055] Furthermore, in the assembly structure 1 of the protective cover 10 according to the embodiment, when the protective cover 10 is in the assembly position, the flexible portion 32a is positioned facing the locking portion 31a in the axial direction, and its free end is positioned on the opposite side from the closed position relative to the locking portion 31a in the assembly position, and the input portion 32c is a wall surface that is inclined in the axial direction and faces the locking portion 31a at the contact position, and is formed as an inclined surface in which the amount of protrusion from the free end of the flexible portion 32a decreases as it approaches the closed position side.

[0056] In the assembly structure 1 of the protective cover 10 according to this embodiment, the input portion 32c is formed as an inclined surface, which reduces the force required to rotate the protective cover 10 from the assembly position to the closed position, thereby improving workability.

[0057] Furthermore, in the assembly structure 1 of the protective cover 10 according to the embodiment, when a force is applied to the protective cover 10 in the open position toward the opposite side from the closed position, the locking portion 31a and the locking projection 32b come into contact with each other, thereby restricting the protective cover 10 from rotating from the open position toward the assembly position.

[0058] The assembly structure 1 of the protective cover 10 according to the embodiment can restrict the rotation of the protective cover 10 from the open position toward the assembly position by locking the locking projection 32b with the locking portion 31a. The assembly structure 1 of the protective cover 10 according to the embodiment can prevent the protective cover 10 from being held in the assembly position (the state in which the protective cover is open), thereby improving safety.

[0059] Furthermore, in the electrical connection box 101 according to the embodiment, there is a housing member 110 that houses an electrical connection member provided with an electrical connection portion for physically and electrically connecting conductive components of a mating device, with the electrical connection portion exposed through an opening 113; a protective cover 10 that exposes the opening 113 of the housing member 110 and the electrical connection portion when in an open position relative to the housing member 110, and covers the opening 113 and the electrical connection portion with a cover body 11 when in a closed position relative to the housing member 110; a rotating shaft 21 provided on one of the housing member 110 and the protective cover 10; and the housing member 110 and the protective cover The protective cover 10 is provided on the other side and includes a bearing 22 having a clamping portion 23 that clamps the rotating shaft 21, wherein the bearing 22 is configured to allow the protective cover 10 to rotate around the axis of the rotating shaft 21 between an open position and a closed position, and the protective cover 10 is configured to be assembled to the housing member 110 by inserting the rotating shaft 21 between the clamping portions 23 at an assembly position further in the opening direction than the open position, and the rotating shaft 21 has a concave portion 21a formed concavely with respect to the outer circumferential surface 21s of the rotating shaft 21 in the portion facing the clamping portion 23 when the protective cover 10 is in the assembly position.

[0060] In the electrical junction box 101 according to this embodiment, the rotating shaft 21 has a concave portion 21a formed on the portion facing the clamping portion 23 when the protective cover 10 is in the assembly position. The electrical junction box 101 according to this embodiment can reduce the amount of displacement when the clamping portion 23 clamps the rotating shaft when assembling the bearing 22 to the rotating shaft. The electrical junction box 101 according to this embodiment has the effect of improving assembly workability because the bearing 22 can be easily assembled to the rotating shaft 21.

[0061] [Modified examples of embodiments] In the above-described embodiment, the temporary holding mechanism 30 was explained using an example in which the temporary holding mechanism 30 includes a first locking body 31 formed on the object to be assembled 110 and a first locked body 32 formed on the protective cover 10, but the configuration is not limited to this. For example, the temporary holding mechanism 30 may include a first locking body 31 formed on the protective cover 10 and a first locked body 32 formed on the object to be assembled 110. In this case, the temporary holding mechanism 30 is configured to temporarily hold the protective cover 10 in the assembly position by locking the first locked body 32 of the object to be assembled to the first locking body 31 of the protective cover 10 in the assembly position. For example, the first locking body 31 protrudes from the protective cover 10 toward the opening direction, and the first locked body 32 protrudes upward from the object to be assembled 110 (configured to sandwich the first locking body 31 of the protective cover 10 at the assembly position). The first locked body 32 has a cantilever-shaped flexible portion 32a that can be deformed in the axial direction, and a locked projection 32b that protrudes axially from the free end of the flexible portion 32a and is locked to the locking portion 31a. The locked projection 32b also has an input portion 32c that receives a reaction force from the contact position when a force is applied to the contact position with the locking portion 31a when the protective cover 10 at the assembly position is rotated toward the closed position, causing the flexible portion 32a to bend and deform, thereby allowing it to overcome the locking portion 31a.

[0062] The modified assembly structure 1 of the protective cover 10 further comprises a temporary holding mechanism 30 for temporarily holding the protective cover 10 in the assembly position, the temporary holding mechanism 30 includes a first locking body 31 formed on the protective cover 10 and a first locked body 32 formed on the object to be assembled 110, the first locking body 31 has a locking portion 31a at least one of its ends in the axial direction of the rotating shaft 21 that locks the first locked body 32 to temporarily hold the protective cover 10 in the assembly position, and the first locked body 32 is closed away from the object to be assembled 110 The flexible part 32a has a cantilevered shape that protrudes toward the opposite side from the mounting side and is capable of bending deformation in the axial direction, and a locking projection 32b that protrudes axially from the free end of the flexible part 32a and is locked to the locking part 31a. The locking projection 32b has an input part 32c that receives a reaction force from the contact position when a force is applied to the contact position with the locking part 31a when the protective cover 10 in the assembly position is rotated toward the closed position, causing the flexible part 32a to bend and deform, thereby allowing it to overcome the locking part 31a.

[0063] The modified assembly structure 1 for the protective cover 10 includes a temporary holding mechanism 30 for temporarily holding the protective cover 10 in the assembly position. The temporary holding mechanism 30 includes a first locking body 31 formed on the protective cover 10 and a first locked body 32 formed on the object to be assembled 110. In this configuration as well, for example, a supplier that delivers a product to which the assembly structure 1 for the protective cover 10 is applied can deliver the product with the protective cover 10 temporarily held in the assembly position (i.e., with the protective cover 10 open). Workers can then start their work from the state in which the protective cover 10 is temporarily held in the assembly position, thus enabling them to work efficiently.

[0064] The embodiments and modifications disclosed above can be combined and implemented as appropriate. [Explanation of symbols]

[0065] 1 Assembly structure 10 protective covers 11 Cover body 12 Space 21 Rotation axis 22 bearings 23 Clamping part 23a 1st clamping part 23b Second clamping part 30 Temporary holding mechanism 31 First locking body 31a Locking part 32 First locked object 32a Flexible part 32b Locked protrusion 32c Input Section 40 Retention mechanism 41 Second locking body 42 Second locked object 101 Electrical junction box 110 Assembly target (container component) 111 Cover member 112 Main body 113 Aperture 120 Electrical connection components 121 Electrical connection Cg center of gravity

Claims

1. A protective cover that, in an open position relative to the object to be assembled, exposes the opening of the main body of the object to be assembled, and in a closed position relative to the object to be assembled, covers the opening with the cover body. A rotating shaft provided in one of the assembly object and the protective cover, A bearing is provided on the other of the assembly object and the protective cover, and has a clamping portion that clamps the rotating shaft, Equipped with, The bearing is configured such that the protective cover can rotate around the axis of the rotating shaft between the open position and the closed position. The protective cover is configured to be assembled to the object to be assembled by inserting the rotating shaft between the clamping portions at an assembly position further in the opening direction than the open position. The rotating shaft has a concave portion formed in a concave shape relative to the outer circumferential surface of the rotating shaft in the portion facing the clamping portion when the protective cover is in the assembly position. A protective cover assembly structure characterized by the following features.

2. The clamping portion includes two first clamping portions located on one side of the rotation axis when viewed from the axial direction of the rotation axis, and one second clamping portion located on the other side of the rotation axis. The first clamping portion and the second clamping portion are arranged alternately along the axial direction, The concave portion includes, on the rotating shaft, a first concave portion facing the first clamping portion and a second concave portion facing the second clamping portion, when the protective cover is in the assembly position. The first concave portion and the second concave portion are formed with their respective bottom surfaces being flat. The protective cover assembly structure according to claim 1.

3. The system further includes a temporary holding mechanism for temporarily holding the protective cover in the assembly position, The temporary holding mechanism includes a first locking body formed on the object to be assembled and a first locked body formed on the protective cover, The first locking body has a locking portion at at least one of the two ends in the axial direction of the rotating shaft that locks the first locked body to temporarily hold the protective cover in the assembly position, The first locking body has a cantilever-shaped flexible portion that protrudes from the cover body toward the opposite side from the closed position and is capable of bending deformation in the axial direction, and a locking projection that protrudes in the axial direction from the free end of the flexible portion and is locked to the locking portion, The locking projection has an input portion which, when the protective cover in the assembly position is rotated toward the closed position, applies a force to the contact point with the locking portion, receives a reaction force from the contact point, and deforms the flexible portion to overcome the locking portion. The protective cover assembly structure according to claim 1.

4. The system further includes a temporary holding mechanism for temporarily holding the protective cover in the assembly position, The temporary holding mechanism includes a first locking body formed on the protective cover and a first locked body formed on the object to be assembled. The first locking body has a locking portion at at least one of the two ends in the axial direction of the rotating shaft that locks the first locked body to temporarily hold the protective cover in the assembly position, The first locking body has a cantilever-shaped flexible portion that protrudes from the object to be assembled toward the opposite side from the closed position and is capable of bending deformation in the axial direction, and a locking projection that protrudes in the axial direction from the free end of the flexible portion and is locked to the locking portion, The locking projection has an input portion which, when the protective cover in the assembly position is rotated toward the closed position, applies a force to the contact point with the locking portion, receives a reaction force from the contact point, and deforms the flexible portion to overcome the locking portion. The protective cover assembly structure according to claim 1.

5. With the protective cover in the assembly position, the flexible portion is positioned opposite the locking portion in the axial direction, and the free end is positioned on the side opposite to the closed position relative to the locking portion in the assembly position. The input portion is a wall surface that is inclined with respect to the axial direction and positioned opposite the locking portion at the contact position, and is formed as an inclined surface in which the amount of protrusion from the free end of the flexible portion decreases as it approaches the closed position. The protective cover assembly structure according to claim 3 or 4.

6. The locking portion and the locked projection restrict the protective cover from rotating from the open position toward the assembly position when a force is applied to the protective cover in the open position toward the opposite side from the closed position. The protective cover assembly structure according to claim 3 or 4, characterized by the above.

7. A housing member that houses an electrical connection member having an electrical connection portion for physically and electrically connecting conductive components of a counterpart device, and exposes the electrical connection portion through an opening, A protective cover that, in the open position relative to the housing member, exposes the opening of the housing member and the electrical connection part, and in the closed position relative to the housing member, covers the opening and the electrical connection part with the cover body, A rotating shaft provided in one of the housing member and the protective cover, A bearing is provided on the other of the housing member and the protective cover, and has a clamping portion that clamps the rotating shaft, Equipped with, The bearing is configured such that the protective cover can rotate around the axis of the rotating shaft between the open position and the closed position. The protective cover is configured to be assembled to the housing member by inserting the rotating shaft between the clamping portions at an assembly position further in the opening direction than the open position. The rotating shaft has a concave portion formed in a concave shape relative to the outer circumferential surface of the rotating shaft in the portion facing the clamping portion when the protective cover is in the assembly position. An electrical junction box characterized by the following features.

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