Resin structure

Abstract

To provide a resin structure that allows easy attachment of a lid body to a main body having a plurality of internal areas.SOLUTION: A resin structure 1 comprises: a box-shaped main body 2 that is partitioned into a plurality of areas R1 and R2; and a lid body 3 that is assembled to the main body 2 to cover one area R1. The main body 2 has a first partition wall 12 that extends to partition the adjacent areas R1 and R2 from each other, and the lid body 3 covering one area R1 has a second partition wall 23 that is provided at an edge of the lid body 3 to extend along the first partition wall 12, and a pair of projection parts 25 that projects from the second partition wall 23 toward one area R1 and is connected to a top face 22 of the lid body 3. Each of the pair of projection parts 25 has an inclined surface 26 that is inclined such that the gap between the pair of projection parts 25 is gradually increased as separated from the top face 22 of the lid body 3. During the assembly of the main body 2 and the lid body 3, a portion 15 of the first partition wall 12 is guided by the inclined surface 26 and inserted into the gap between the pair of projection parts 25.SELECTED DRAWING: Figure 5

Description

[Technical Field]

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

[0002] Resin structures formed by assembling a plurality of resin bodies have been proposed in the past, such as electrical connection boxes (e.g., relay boxes) mounted on vehicles. For example, one conventional electrical connection box includes a box-shaped main body that stores electronic components and the like, and a lid body that has a shape corresponding to an opening of the main body so as to close the opening, and the lid body is assembled to the main body (see, for example, Patent Documents 1 to 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-150595 [Patent Document 2] Japanese Patent Application Publication No. 2020-150596 [Patent Document 3] Japanese Patent Publication No. 2021-045019 Summary of the Invention [Problem to be solved by the invention]

[0004] Depending on the specifications of an electrical junction box, the interior of the main body of the electrical junction box may be divided into multiple regions, and the openings of each region may be closed using multiple lids corresponding to the multiple regions. For example, in order to improve the maintainability of the electrical junction box, each region may be designed so that one region primarily houses relays and another region primarily houses fuses. When an electrical junction box is divided into multiple regions and each region is closed with a lid, the number of steps required to align the lids with the openings of the main body and attach them to the main body increases, making it difficult to improve the productivity of electrical junction boxes compared to when the main body has only a single region. It should be noted that, not only electrical junction boxes, but also resin structures having a structure in which multiple lids are attached to a main body having multiple internal regions also make it difficult to improve the productivity compared to when the main body has only a single internal region, as described above.

[0005] An object of the present invention is to provide a resin structure that allows a lid to be easily attached to a main body having a plurality of internal regions. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the resin structure according to the present invention has the following features.

[0007] A resin structure comprising: a box-shaped main body divided into a plurality of regions; and a lid body attached to the main body so as to cover one of the plurality of regions, The body includes: a first partition wall extending to separate a pair of adjacent regions; a protruding engagement portion provided on a side surface of the first partition wall on one side of the pair of regions; and The lid body is a second partition wall that covers one of the pair of regions and is provided on an edge of the lid body so as to extend along the first partition wall; and a pair of protrusions that protrude from the second partition wall to one side of the pair of regions and are connected to an upper surface of the lid body, Each of the pair of protrusions is a sloped surface that is sloped so that the gap between the pair of protrusions gradually widens as the gap moves away from the top surface of the lid body; When the main body and the lid are assembled, The gap between the pair of protrusions is The engaging portion is inserted while being guided by the inclined surface. It is a resin structure. [Effects of the Invention]

[0008] According to the resin structure of the present invention, when the lid is attached to the box-shaped main body so as to cover one of the regions, a part of the first partition wall provided on the main body and separating the regions is covered. The engagement portion is is inserted into the gap between a pair of protrusions provided on the second partition wall of the lid body. Here, the pair of protrusions have an inclined surface (so-called tapered surface) that is inclined so that the gap between the protrusions gradually widens as it moves away from the upper surface of the lid body. Therefore, when the lid body is assembled to the main body, the first partition wall is guided along this inclined surface, and the lid body is naturally positioned in the appropriate position to close the corresponding area. Furthermore, after the lid body is assembled, the inclined surface and the first partition wall inserted between the pair of protrusions Engagement part By visually checking the positional relationship between and , it is easy to determine whether the lid is placed in the correct position. In addition, the pair of protrusions protrude from the second partition wall of the lid and are connected to the upper surface of the lid, thereby improving the rigidity of the lid itself. This makes it possible to suppress unintended deformation of the lid. Suppressing deformation of the lid also contributes to placing the lid in the correct position. Therefore, the resin structure of this configuration makes it possible to easily attach the lid to a main body having multiple internal regions.

[0009] The present invention has been briefly described above. The details of the present invention will become clearer by reading the detailed description of the invention below in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of a resin structure according to an embodiment of the present invention in which a first lid body is attached to a main body and a second lid body is separated from the main body. [Figure 2] FIG. 2 is a perspective view showing the main body and the first cover. [Figure 3] FIG. 3 is a perspective view for explaining the first half of the procedure for assembling the first cover body to the main body. [Figure 4] FIG. 4 is a perspective view for explaining the latter half of the procedure for assembling the first cover to the main body, and the procedure for assembling the second cover to the main body. [Figure 5] FIG. 5 is an enlarged view of part A in FIG. [Figure 6] FIG. 6 is an enlarged view of part B in FIG. [Figure 7] Figure 7 is a cross-sectional view corresponding to the CC cross section in Figure 4 of a multilayer wall structure consisting of a first partition wall of the main body and a second partition wall of the first lid, and a multilayer wall structure consisting of the first partition wall of the main body and a third partition wall of the second lid, obtained by assembling the first lid and the second lid to the main body. [Figure 8] 8 is a cross-sectional view taken along the line DD in FIG. 4 at an engagement point between the engagement portion of the main body and the engagement portion of the first cover. DETAILED DESCRIPTION OF THE INVENTION

[0011] <Embodiment> Hereinafter, with reference to the drawings, a resin structure 1 according to an embodiment of the present invention shown in Fig. 1 will be described. The resin structure 1 is typically a relay box (electrical junction box) that is mounted on a vehicle and houses electronic components such as relays.

[0012] As shown in FIGS. 1 and 2, the resin structure 1 includes a main body 2 in which electronic components such as relays (and other components, not shown) are housed; a first lid 3 attached to the upper end of the main body 2 so as to close the upper opening of a first region R1 (see FIG. 2) inside the main body 2; and a second lid 4 attached to the upper end of the main body 2 so as to close the upper opening of a second region R2 (see FIG. 2) inside the main body 2. Each of the main body 2, the first lid 3, and the second lid 4 is a resin molded body. In this example, in order to prevent interference between the first lid 3 and a component (e.g., a reservoir tank) located above the first lid 3 when the resin structure 1 is fully assembled, the first lid 3 is positioned below the second lid 4. Each of the components constituting the resin structure 1 will be described below.

[0013] First, the main body 2 will be described. As shown in Figures 1 and 2, the main body 2 has a cylindrical peripheral wall 11 that has a predetermined shape when viewed from the top-bottom direction and extends in the vertical direction. The interior of the main body 2, surrounded by the peripheral wall 11, is divided into a first region R1 and a second region R2 by a flat first partition wall 12 that crosses the interior of the main body 2 in a predetermined direction and extends in the vertical direction. In this example, each of the first region R1 and the second region R2 houses electronic components such as relays (and other components, not shown).

[0014] Hereinafter, the portion of peripheral wall 11 that surrounds first region R1 may be referred to as first peripheral wall 13, and the portion that surrounds second region R2 may be referred to as second peripheral wall 14 (see FIG. 2). In this example, since first lid body 3 is positioned lower than second lid body 4 when resin structure 1 is fully assembled, the upper edge of first peripheral wall 13 is positioned lower than the upper edges of second peripheral wall 14 and first partition wall 12.

[0015] For the sake of convenience, the "partition direction," "front-rear direction," and "up-and-down direction" are defined below as shown in FIGS. 1 to 8. The "partition direction," "front-rear direction," and "up-and-down direction" are perpendicular to one another. When the resin structure 1 is mounted on a vehicle, the "up-and-down direction" corresponds to the vertical direction of the vehicle. The "partition direction" corresponds to the predetermined direction in which the first partition wall 12 crosses the inside of the main body 2, and the "front-rear direction" corresponds to the plate thickness direction of the first partition wall 12.

[0016] 2 and 7, a recess 16 recessed forward is formed in a region below a position a predetermined distance below the upper edge of the rear end surface of the first partition wall 12 so as to extend in a band shape in the partition direction. Ribs 15 protruding downward from the upper edge of the recess 16 (rear end portions of the side walls defining the upper ends of the recess 16) are provided in locations (two locations) near both ends of the first partition wall 12 in the partition direction. When the assembly of the resin structure 1 is complete, the recess 16 and the rib 15 will engage with a second partition wall 23 (described below) of the first lid 3 (see FIGS. 4 and 7).

[0017] 2 and 7, locking projections 17 protruding rearward are provided on the rear end surface of the first partition wall 12 at two locations in the partitioning direction corresponding to the pair of ribs 15, adjacent to the upper sides of the ribs 15. When the assembly of the resin structure 1 is complete, the pair of locking projections 17 will engage with a pair of locking arms 41 (described later) of the second cover 4 (see FIG. 7).

[0018] As shown in Fig. 2, an engagement portion 18 is provided at a predetermined location (one location in this example) in the circumferential direction of the second peripheral wall 14. The engagement portion 18 is to engage with an engagement portion 34 (described later) of the second cover 4. As shown in Fig. 2, engagement portions 19 are provided at a plurality of predetermined locations (two locations in this example) in the circumferential direction of the first peripheral wall 13. The plurality of engagement portions 19 are to engage with a plurality of engagement portions 24 (described later) of the first cover 3.

[0019] Next, the first cover 3 will be described. As shown in Fig. 2, the first cover 3 integrally comprises a peripheral wall 21 that extends in the vertical direction and has a shape corresponding to the first peripheral wall 13 of the main body 2 when viewed in the vertical direction, a top wall portion 22 that closes the upper end opening surrounded by the peripheral wall 21, and a second partition wall 23 that protrudes upward from a front end edge of the top wall portion 22 that extends in the partition direction corresponding to the first partition wall 12 and extends in the partition direction. Engagement portions 24 that can engage with the engagement portions 19 are provided at multiple locations (two locations) in the circumferential direction of the peripheral wall 21 that correspond to the multiple engagement portions 19 of the main body 2, respectively.

[0020] As shown in Figures 2 to 4, a pair of protrusions 25 are formed on the rear end surface of the second partition wall 23 at locations (two locations) in the partitioning direction that correspond to the pair of ribs 15 of the main body 2, so as to protrude rearward and extend in the vertical direction with a gap in the partitioning direction. The lower ends of the pair of protrusions 25 are connected to the upper surface of the top wall 22 of the first cover 3. The gap in the partitioning direction between the pair of protrusions 25 is slightly larger than the width of the ribs 15 in the partitioning direction. Therefore, the rib 15 can be inserted into the gap between the pair of protrusions 25 (see Figures 5 and 6).

[0021] 5 and 6, in each of the pair of protrusions 25, an inclined surface 26 is formed at the upper corner facing the mating protrusion 25 so that the gap between the pair of protrusions 25 gradually widens as the gap moves upward. The effect of providing the pair of inclined surfaces 26 in this manner will be described later.

[0022] Next, the second cover 4 will be described. As shown in Fig. 4, the second cover 4 integrally comprises a peripheral wall 31 that extends in the vertical direction and has a shape corresponding to the second peripheral wall 14 of the main body 2 when viewed in the vertical direction, a third partition wall 32 that extends in the partition direction and also in the vertical direction corresponding to the first partition wall 12 so as to connect both circumferential ends of the peripheral wall 31, and a top wall portion 33 that closes the upper end opening surrounded by the peripheral wall 31 and the third partition wall 32. An engaging portion 34 that can engage with the engaging portion 18 is provided at a position (one position) in the circumferential direction of the peripheral wall 31 that corresponds to the engaging portion 18 of the main body 2.

[0023] 7, the rear end surface of the third partition wall 32 is provided with a first end wall 35 that protrudes rearward from a vertical position adjacent to the upper side of the lower end edge and extends in the partition direction, and a second end wall 36 that protrudes downward from the protruding end extending in the partition direction of the first end wall 35 and extends in the partition direction. As a result, a recess 37 that opens downward, is recessed upward, and extends in the partition direction is formed between the lower end edge of the third partition wall 32 and the second end wall 36.

[0024] As shown in FIG. 4, a pair of cantilevered locking arms 41 extending downward from the second end wall 36 are provided at two locations in the partition direction of the second end wall 36 that correspond to the pair of locking projections 17 of the main body 2. The locking arms 41 are elastically deformable in the front-rear direction within a predetermined range. A rectangular opening 42 penetrating the locking arm 41 in the front-rear direction is formed in the locking arm 41. The lower edge of the opening 42 is engaged with the locking projections 17 of the main body 2 (see FIG. 7). The components that make up the resin structure 1 have been described above.

[0025] 2 to 4, a procedure for assembling the first lid 3 and the second lid 4 to the main body 2 will be described. First, the first lid 3 is assembled to the main body 2. To do this, the main body 2 and the first lid 3 are first positioned so that the first lid 3 is located above the first region R1 of the main body 2 (see FIG. 2). Next, as shown in Figure 3, with the first cover body 3 tilted in a direction so that its front end is positioned lower than its rear end, the upper edge of the second partition wall 23 of the first cover body 3 is brought closer to the recess 16 of the main body 2 (see the arrow in Figure 3), and the upper edge of the second partition wall 23 is accommodated in the recess 16 so that each of the pair of ribs 15 is inserted from above into the gap between the corresponding pair of protrusions 25, and then the upper edge of the second partition wall 23 is engaged with the upper corner of the recess 16 (the intersection of the side wall that defines the upper end of the recess 16 and the bottom wall that defines the front end of the recess 16) over the entire partition direction (see also Figure 7).

[0026] When the rib 15 is inserted, the rib 15 is inserted into the gap between the pair of protrusions 25 while being guided by a pair of inclined surfaces 26 provided on the pair of protrusions 25. The guiding effect of the inclined surfaces 26 prevents the first lid body 3 from shifting in position relative to the main body 2 in the partition direction, and the first lid body 3 is naturally positioned in the appropriate partition direction to cover the first region R1.

[0027] Next, as shown in Fig. 4, the first cover 3 is rotated (see the arrow in Fig. 4) around the upper edge of the second partition wall 23 (i.e., the front end of the first cover 3) engaged with the upper corner of the recess 16 in a direction in which the rear end of the first cover 3 moves downward (a direction in which the first cover 3 is returned to a horizontal position) so that the peripheral wall 21 of the first cover 3 overlaps the outside of the first peripheral wall 13 of the main body 2, and the first cover 3 is assembled to the main body 2 (see Fig. 4). This completes the assembly of the first cover 3 to the main body 2.

[0028] As shown in FIG. 7 , when the first cover 3 is completely attached to the main body 2, the second partition wall 23 is housed in the recess 16. Therefore, the upper end surface of the second partition wall 23 engages with the inner wall surface of the side wall that defines the upper end of the recess 16, preventing the front end of the first cover 3 from being separated vertically from the main body 2. In other words, the front end of the first cover 3 is prevented from being separated vertically from the main body 2 without the need for a separate locking structure or the like. Furthermore, the rear end surface of the upper edge of the second partition wall 23 engages with the front end surface of the rib 15, preventing the second partition wall 23 from moving in a direction away from the first partition wall 12 (rearward). This more firmly prevents the first cover 3 from being unintentionally detached from the main body 2 once the main body 2 and the first cover 3 are attached to each other. Furthermore, the engagement between the locking portion 19a (see Figure 8) provided on the engagement portion 19 of the main body 2 and the locking portion 24a (see Figure 8) provided on the engagement portion 24 of the first cover body 3 (see Figures 1, 2 and 8) prevents the rear end of the first cover body 3 and the main body 2 from separating in the vertical direction.

[0029] Furthermore, when the first lid 3 is completely attached to the main body 2, the first partition wall 12 of the main body 2 and the second partition wall 23 of the first lid 3 are overlapped (laminated) in the front-to-rear direction to form a multi-layer wall structure (specifically, a double-wall structure, a so-called labyrinth-like structure), as shown in Fig. 7. As a result, the creepage distance is longer than when the first partition wall 12 and the second partition wall 23 are simply butted together, and water can be prevented from entering the main body 2 between the adjacent regions R1 and R2.

[0030] Furthermore, once the first cover 3 has been attached to the main body 2, as shown in Figures 5 and 6, it is possible to easily determine whether the first cover 3 is properly positioned relative to the main body 2 by visually checking the positional relationship between the pair of inclined surfaces 26 provided on the pair of protrusions 25, the pair of protrusions 25, and the rib 15 of the first partition wall 12. In addition, the pair of protrusions 25 protruding from the second partition wall 23 of the first cover 3 are connected to the top wall 22 of the first cover 3, thereby improving the rigidity of the first cover 3 itself. As a result, deformation of the first cover 3 can be suppressed when attaching the first cover 3 to the main body 2, etc.

[0031] Next, as shown in FIG. 4, the second lid 4 is assembled to the main body 2 to which the first lid 3 has been assembled. To this end, first, the main body 2 and the second lid 4 are positioned so that the second lid 4 is located above the second region R2 of the main body 2 (see FIG. 4). Next, while maintaining the second lid 4 horizontally, the main body 2 and the second lid 4 are moved closer to each other in the vertical direction (see the arrows in FIG. 4). The second lid 4 is assembled to the main body 2 so that the upper edge of the first partition wall 12 of the main body 2 is fitted into the recess 37 (see FIG. 7) of the second lid 4 and so that the peripheral wall 31 of the second lid 4 overlaps the outside of the second peripheral wall 14 of the main body 2. This completes the assembly of the first lid 3 and the second lid 4 to the main body 2, and a fully assembled resin structure 1 is obtained.

[0032] When the second cover 4 has been completely assembled to the main body 2 (when the resin structure 1 has been completely assembled), the lower edge portions of the openings 42 of the pair of locking arms 41 of the second cover 4 engage with the pair of locking protrusions 17 of the main body 2 (see Figure 7), and the engagement portions 18 of the main body 2 engage with the engagement portions 34 of the second cover 4 (see Figure 1), thereby preventing the main body 2 and the second cover 4 from separating in the vertical direction.

[0033] 7, when the second lid 4 has been attached to the main body 2 (when the resin structure 1 has been attached), the first partition wall 12 of the main body 2 and the third partition wall 32 of the second lid 4 that have entered the recess 37 overlap (are stacked) in the front-to-rear direction to form a multi-layer wall structure (specifically, a double-wall structure, a so-called labyrinth-like structure). As a result, the creeping distance is longer than when the first partition wall 12 and the third partition wall 32 are simply butted together, and water can be prevented from entering the main body 2 between the adjacent regions R1 and R2.

[0034] <Actions and Effects> As described above, according to the resin structure 1 of this embodiment, when the first cover 3 is assembled to cover the first region R1 of the box-shaped main body 2, the rib 15 on the first partition wall 12, which is provided on the main body 2 and separates the first region R1 from the second region R2, is inserted into the gap between the pair of protrusions 25 on the second partition wall 23 of the first cover 3. Here, the pair of protrusions 25 have inclined surfaces (tapered surfaces) 26 that are inclined so that the gap between the protrusions 25 gradually widens with increasing distance from the top wall 22 of the first cover 3. Therefore, when the first cover 3 is assembled to the main body 2, the guiding effect of the inclined surfaces 26 allows the first cover 3 to be naturally positioned in the appropriate position to cover the first region R1. Furthermore, after the first cover 3 is assembled, it is easy to determine whether the first cover 3 is positioned in the appropriate position by visually checking the positional relationship between the inclined surfaces 26 and the rib 15 on the first partition wall 12. In addition, a pair of protrusions 25 protruding from second partition wall 23 of first lid body 3 are connected to top wall portion 22 of first lid body 3, thereby improving the rigidity of first lid body 3 itself and suppressing deformation of first lid body 3. Suppressing deformation of first lid body 3 also contributes to arranging first lid body 3 in an appropriate position. Therefore, resin structure 1 according to this embodiment allows first lid body 3 to be easily attached to main body 2 having multiple internal regions R1, R2.

[0035] Furthermore, according to the resin structure 1, when the first lid 3 is attached to the main body 2 constituting the resin structure 1, the first partition wall 12 of the main body 2 and the second partition wall 23 of the first lid 3 overlap each other to form a multilayer wall structure (a so-called labyrinth-like structure). This multilayer wall structure increases the creepage distance between the main body 2 and the first lid 3, thereby preventing water from penetrating into the resin structure 1 through the boundary between the adjacent regions R1 and R2. In other words, the waterproofness of the resin structure 1 can be improved.

[0036] Furthermore, according to the resin structure 1, the recessed recess 16 provided in the first partition wall 12 of the main body 2 restricts the second partition wall 23 of the first lid body 3 from moving in a direction (upward) that separates the first lid body 3 from the main body 2. Therefore, for example, when assembling the first lid body 3 to the main body 2, the first lid body 3 can be attached to the main body 2 while rotating the first lid body 3 around the contact point between the recess 16 of the main body 2 and the first lid body 3. Furthermore, because the recess 16 restricts the movement of the first lid body 3, it is possible to prevent the first lid body 3 from coming off the main body 2 without providing a separate locking structure or the like. Therefore, since such a locking structure can be omitted, the internal space of the main body 2 can be expanded, thereby improving the storage performance of the resin structure 1. Furthermore, because there is no need to provide such a locking structure on the peripheral wall of the main body 2, the resin structure 1 can be made more compact.

[0037] <Other forms> It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiments, and modifications, improvements, etc. are possible as appropriate. In addition, the material, shape, dimensions, number, location, etc. of each component in the above-described embodiments are arbitrary as long as they can demonstrate the present invention, and are not limited thereto.

[0038] In the above embodiment, a pair of protrusions 25 is provided on the second partition wall 23 of the first cover 3, corresponding to each of the pair of ribs 15 provided on the first partition wall 12 of the main body 2. However, a pair of protrusions 25 may be provided on the second partition wall 23 of the first cover 3, corresponding to only one of the pair of ribs 15.

[0039] Here, the features of the above-described embodiment of the resin structure 1 according to the present invention will be briefly summarized and listed below in [1] to [3].

[0040] [1] A resin structure (1) comprising: a box-shaped main body (2) divided into a plurality of regions (R1, R2); and a lid (3) assembled to the main body (2) so as to cover one of the plurality of regions (R1), The main body (2) is a first partition wall (12) extending to separate a pair of adjacent regions (R1, R2); The cover (3) is a second partition wall (23) that covers one of the pair of regions (R1) and is provided on the edge of the lid body (3) so as to extend along the first partition wall (12); and a pair of protrusions (25) that protrude from the second partition wall (23) toward the one of the pair of regions (R1) and are connected to the upper surface (22) of the lid body (3), Each of the pair of protrusions (25) a sloped surface (26) that is sloped so that the gap between the pair of protrusions (25) gradually widens as it moves away from the upper surface (22) of the lid body (3); When the main body (2) and the cover (3) are assembled, A portion (15) of the first partition wall (12) is inserted into the gap between the pair of protrusions (25) while being guided by the inclined surface (26). Resin structure (1).

[0041] According to the resin structure of the above configuration [1], when the lid is assembled to cover one of the multiple regions of the box-shaped main body, a portion of the first partition wall on the main body that separates the regions is inserted into the gap between a pair of protrusions on the second partition wall of the lid. Here, the pair of protrusions have inclined surfaces (so-called tapered surfaces) that gradually widen the gap between them as they move away from the top surface of the lid. Therefore, when the lid is assembled to the main body, the first partition wall is guided along the inclined surfaces, which naturally position the lid in the appropriate position to cover the corresponding region. Furthermore, after the lid is assembled, visually checking the positional relationship between the inclined surfaces and the portion of the first partition wall inserted between the pair of protrusions makes it easy to determine whether the lid is properly positioned. Additionally, the pair of protrusions protrude from the second partition wall of the lid and connect to the top surface of the lid, improving the rigidity of the lid itself. This prevents unintended deformation of the lid. The suppression of deformation of the lid also contributes to placing the lid in an appropriate position. Therefore, the resin structure of this configuration makes it possible to easily attach the lid to a main body having multiple internal regions.

[0042] [2] In the resin structure (1) described in [1] above, When the main body (2) and the lid (3) are assembled, the first partition wall (12) and the second partition wall (23) are arranged to overlap in the thickness direction of the first partition wall (12), thereby forming a multi-layer wall structure. Resin structure (1).

[0043] According to the resin structure having the configuration [2] above, when the lid is attached to the main body constituting the resin structure, the first partition wall of the main body and the second partition wall of the lid overlap to form a multilayer wall structure (a so-called labyrinth-like structure). This multilayer wall structure increases the creepage distance between the main body and the lid, thereby preventing water from penetrating into the resin structure from the boundary between adjacent regions. In other words, the waterproofness of the resin structure can be improved.

[0044] [3] In the resin structure (1) according to the above [1] or [2], The first partition wall (12) is a recessed restriction portion (16) that accommodates at least a portion of the second partition wall (23) and restricts the second partition wall (23) from moving in a direction that separates it from the main body (2); Resin structure (1).

[0045] According to the resin structure of the configuration [3] above, a recessed restricting portion provided on the first partition wall of the main body restricts the second partition wall of one of the lids from moving in a direction that separates it from the main body. Therefore, for example, when assembling one of the lids to the main body, the lid can be attached to the main body while rotating it around the contact point between the restricting portion of the main body and the lid. Furthermore, because the restricting portion restricts the movement of the lid, the lid can be prevented from coming off the main body without the need for a separate locking structure or the like. Therefore, the internal space of the main body can be expanded by the amount that such a locking structure can be omitted, thereby improving the storage performance of the resin structure. Furthermore, because there is no need to provide such a locking structure on the peripheral wall of the main body, the resin structure can be made more compact. [Explanation of symbols]

[0046] 1 Resin structure 2 Main unit 3 First lid (lid) 12 First Partition Wall 15 Rib (part) 16 Recess (restriction part) 22 Ceiling wall section (top surface) 23 Second Partition Wall 25 Protrusion 26 Slope R1 area R2 area

Claims

1. A resin structure comprising: a box-shaped main body divided into a plurality of regions; and a lid body attached to the main body so as to cover one of the plurality of regions, The body includes: a first partition wall extending to separate a pair of adjacent regions; and a protruding engagement portion provided on a side surface of the first partition wall on one side of the pair of regions, The lid body is a second partition wall that covers one of the pair of regions and is provided on an edge portion of the lid body so as to extend along the first partition wall; and a pair of protrusions that protrude from the second partition wall to one side of the pair of regions and are connected to an upper surface of the lid body, Each of the pair of protrusions is a sloped surface that is sloped so that the gap between the pair of protrusions gradually widens as the gap moves away from the top surface of the lid body; When the main body and the lid are assembled, The engaging portion of the first partition wall is inserted into the gap between the pair of protrusions while being guided by the inclined surface. Resin structure.

2. The resin structure according to claim 1 , When the main body and the lid body are assembled, the first partition wall and the second partition wall are arranged to overlap each other in a thickness direction of the first partition wall, thereby forming a multi-layer wall structure. Resin structure.

3. The resin structure according to claim 1 or 2, The first partition wall is a recessed restriction portion that receives at least a portion of the second partition wall and restricts the second partition wall from moving in a direction that separates it from the main body; Resin structure.

4. In the resin structure according to claim 3, The engagement portion of the main body is The restricting portion protrudes from the edge of the recess toward the inside of the recess. Resin structure.

Images