Housing box

Abstract

A housing box (1) comprises a main body portion (2) having an opening portion (21) capable of receiving an object therein and establishing communication between an inside and an outside, a lid portion (3) attached to the main body portion (2) and detachably secured to the opening portion (21), and a synthetic resin sealing member (4) provided in the lid portion (3), disposed at least in a water-stop region (S) between the main body portion (2) and the lid portion (3), and performing a water stop between the main body portion (2) and the lid portion (3). The sealing member (4) has a resin injection portion (42) formed in a non-water-stop region (N) connected to and deviating from the water-stop region (S), and serving as a resin injection position during resin molding.

Description

Area

[0001] The present invention relates to a housing box. background

[0002] As a housing case, such as that described in Patent Document 1, a housing body with a lid that can be opened and closed relative to a housing is known. A gasket is arranged in the housing body at a position of the lid in contact with the housing, and the gasket ensures a water-stopping function between the housing and the lid. Citation listPatent literature

[0003] Patent Literature 1: JP 2001-25135 A SummaryTechnical problem

[0004] In the above-described enclosure box, there is a possibility that the water stop function cannot be secured inside and outside the enclosure body. For example, if the gasket provided on the cover is manufactured by resin molding, a resin injection mark will form on a part of the gasket. The resin injection mark is a mark caused by cutting a gate during plastic injection, which will result in irregularities on the surface of the gasket. Therefore, if the resin injection mark is formed inside the package, a gap may form between the package and the enclosure, and the water stop function between the enclosure and the cover may not be sufficiently secured.

[0005] Therefore, it is an object of the present invention to provide a housing box capable of securing a water stop function of a packing member. Solution to the problem

[0006] A housing box according to the present invention comprises a main body portion having an opening portion capable of accommodating electronic components therein and establishing communication between an inside and an outside; a lid portion attached to the main body portion and detachably secured to the opening portion; and a resin sealing member provided in the lid portion, disposed at least in a water-stopping region between the main body portion and the lid portion, and performing water-stopping between the main body portion and the lid portion, wherein the sealing member has a resin injection portion formed in a non-water-stopping region connected to and deviated from the water-stopping region, and serving as a resin injection position during resin molding. Advantageous effects of the invention

[0007] According to a housing box of the present invention, it is possible to ensure a water stop function of a sealing member. Brief description of the drawings Fig. 1 is an exploded perspective view of a housing box according to a first embodiment. Fig. 2 is an explanatory view of a sealing member of the housing box according to the first embodiment. Fig. 3 is a cross-sectional view of the housing box along the line III-III of Fig. 2. Fig. 4 is an explanatory view of a method of manufacturing the housing box according to the first embodiment. Fig. 5 is an explanatory view of the method of manufacturing the housing box according to the first embodiment. Fig. 6 is an explanatory view of the method of manufacturing the housing box according to the first embodiment. Fig. 7 is an exploded perspective view of a housing box according to a second embodiment. Fig. 8 is a cross-sectional view of the housing box along the line VIII-VIII in Fig. 7. Description of the embodiments

[0008] Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. Moreover, the components of the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same. [Embodiment]

[0009] A housing box according to a first embodiment of the present invention will be described. Fig. 1 is an exploded perspective view of a housing box according to a first embodiment, Fig. Fig. 2 is an explanatory view of a sealing member of the housing box according to the first embodiment, and Fig. 3 is a cross-sectional view of the housing box along the line III-III of Fig. 2.

[0010] As in Fig. 1, a housing box 1 according to the present embodiment is a box that houses electronic components and is used as an electrical junction box mounted on a vehicle and accommodates electronic components such as a fuse and a relay. The housing box 1 includes a main body portion 2, a lid portion 3, and a sealing member 4. The main body portion 2 has an opening portion 21 capable of accommodating electronic components therein and establishing communication between an interior and an exterior. The main body portion 2 has, for example, a box shape in which a bottom portion and a ceiling portion are opened, and functions as a side cover. In this case, for example, the lower part of the main body portion 2 is closed by attaching a lower cover 5.The ceiling portion of the main body portion 2 is the opening portion 21 that communicates between the inside and the outside, and is closed by attaching the lid portion 3. The opening portion 21 is, for example, an opening that opens an entire upper surface of the main body portion 2. In . Fig. 1, the main body portion 2 is configured to cover an entire periphery of a side surface portion of the housing box 1, but may also be configured to cover the side surface portion of the housing box 1 in combination with another component. For example, the main body portion 2 may have a shape in which a part of the side surface portion of the housing box 1 is cut out, and another component may be attached to the cutout portion to cover the side surface portion of the housing box 1.

[0011] The lid portion 3 is an upper cover that covers the opening portion 21 of the main body portion 2, is attached to the main body portion 2 to cover the opening portion 21, and is detachably attached to the opening portion 21. The lid portion 3 has an upper surface portion 31 and a lower wall portion 32. The upper surface portion 31 is an upper surface portion of the lid portion 3 and has a shape corresponding to the shape of the main body portion 2 in plan view, for example, a rectangular shape or a substantially rectangular shape. The lower wall portion 32 is a wall portion extending downward from an outer edge of the upper surface portion 31 and formed over an entire outer edge of the upper surface portion 31.The downward extension length of the lower wall portion 32 is set according to the shape of an upper edge portion 22 of the main body portion 2. That is, the upper edge portion 22 of the main body portion 2 fluctuates up and down along an outer edge depending on conditions such as an installation space and an outer shape of the housing box 1. The downward extension length of the lower wall portion 32 is set so that the lower wall portion 32 can be connected to the upper edge portion 22 over the entire circumference. The lid portion 3 is provided with an engaging portion 33. The engaging portion 33 is a portion that engages with an engaging portion 23 of the main body portion 2 to hold and release the lid portion 3 with respect to the main body portion 2. For example, a plurality of engaging portions 33 are formed on an outer surface of the lower wall portion 32.

[0012] The sealing member 4 is a water-stopping member that performs water-stopping between the main body portion 2 and the lid portion 3 and is formed of a resin. The sealing member 4 is made of a resin that has lower rigidity than the lid portion 3 and is formed, for example, of an elastic resin such as an elastomer. The sealing member 4 has a main body 41 and a resin injection portion 42. The main body 41 is a portion that functions as a water-stopping member, is disposed in a water-stopping region S between the main body portion 2 and the lid portion 3, and has an annular shape. The water-stopping region S is a region between the main body portion 2 and the lid portion 3 and is a region that abuts the main body portion 2 on one side and the lid portion 3 on the other side.The resin injection portion 42 is a portion serving as a resin injection position during resin molding of the sealing member 4, and is formed in a non-water stop region N connected to the main body 41 and deviated from the water stop region S. As shown in FIG. Fig. 2, the main body 41 is arranged, for example, along the water-stopping region S at an outer edge of the lid portion 3. The resin injection portion 42 is shaped to branch off and protrude from the main body 41. For example, the resin injection portion 42 is shaped to extend from the water-stopping region S, in which the main body 41 is arranged, to the inside of the lid portion 3. That is, the resin injection portion 42 is shaped to branch off from the main body 41 and extend toward a central side of the lid portion 3, and is formed in the non-water-stopping region N that is not located between the main body portion 2 and the lid portion 3. Therefore, even if the resin injection portion 42 has a gate mark and a surface of the resin injection portion 42 has irregularities, the water-stopping performance of the sealing member 4 is not impaired.Therefore, the water-stopping performance of the sealing element 4 can be reliably ensured. Note that . Fig. 2 is a view from the back (bottom) of the lid section 3 and the main body section 2 is not shown. As in Fig. 3, the sealing element 4 is provided in a groove 322 formed in the lid portion 3. The groove 322 is formed between an outer wall 323 and an inner wall 324 below a hanging portion 321. The hanging portion 321 is a part of the lower wall portion 32 and is a wall portion extending downward from the upper surface portion 31. The inner wall 324 is a wall portion connected to a lower portion of the hanging portion 321. The outer wall 323 is a wall portion connected to the lower portion of the hanging portion 321 via a projecting portion 225 and located outside the inner wall 324 and provided at a predetermined distance from the inner wall 324. The projecting portion 325 is provided so as to project outward from a lower end of the suspension portion 321, and a distal end thereof is continuous with the outer wall 323.An extension portion 326 is continuously formed below the outer wall 323. The extension portion 326 is a wall portion covering an outer side of a side wall 24 of the main body portion 2. The groove 322 is formed to be surrounded by the inner wall 324, the protruding portion 325, and the outer wall 323, and is a downwardly open space. The groove 322 is formed along an extending direction (in . Fig. 3 a Y direction) of a lower edge of the lower wall portion 32. The sealing element 4 is arranged, for example, at a deep position in an upper portion of the groove 322 and is arranged to be in contact with the protruding portion 325. When the lid portion 3 is attached to the main body portion 2, the upper edge portion 22 of the main body portion 2 is inserted into the groove 332. For example, in the upper edge portion 22, two protruding parts 221 and 222 are formed, which protrude upward from an upper end, and one protruding part 221 is inserted into the groove 332. The protruding parts 221 and 222 are ribs formed along the extending direction (in Fig. 3 the Y-direction) of the upper edge portion 22, are parallel to the inside and outside and are provided so that they are positioned outside and inside the inner wall 324.

[0013] Next, a method for manufacturing the housing box according to the first embodiment will be described.

[0014] Fig. 4, Fig. 5 and Fig. 6 are explanatory views of the method of manufacturing the housing box according to the first embodiment, and are explanatory views of resin molding of the lid part and the sealing member.

[0015] The housing box 1 is manufactured by attaching the lid portion 3 provided with the sealing member 4 to the main body portion 2. The main body portion 2, the lid portion 3, and the sealing member 4 are manufactured individually. The main body portion 2 is manufactured, for example, by resin molding. If the main body portion 2 is not made of a resin, the main body portion 2 may be manufactured by a method other than resin molding.

[0016] The lid portion 3 and the sealing member 4 are manufactured by resin molding. For example, the lid portion 3 and the sealing member 4 are manufactured by two-color molding using two different types of resins. As shown in Fig. As shown in Figure 4, a first resin 110, which is fluid at high temperature, is first injected into a molding space 103 formed between the molds 101 and 102. The molding space 103 is shaped to correspond to the shape of the lid portion 3. The first resin 110 is then filled into the molding space 103 and cured by cooling, thus forming the lid portion 3.

[0017] Then, as in Fig. 5, a second resin 111 for molding, which is fluid at high temperature, is injected into a molding space 105 formed between the mold 101 and the lid portion 3. The molding space 105 is shaped to correspond to the shape of the sealing member 4. At this time, the second resin 111 is injected into the molding space 105 from a position corresponding to the resin injection portion 42. That is, a gate 104A of a mold 104 is provided at a position to be the resin injection portion 42. The second resin 111 is a different resin from the first resin 110 and has lower rigidity than the first resin 110 after curing. Then, the second resin 111 is injected into the molding space 105 through the gate 104A and filled into the molding space 105. Then, the second resin 111 is cured by cooling, and the second resin 111 becomes the sealing member 4.

[0018] As in Fig. 6, the lid portion 3 and the sealing member 4 are manufactured by two-color molding. At this time, a gate mark 42A is formed on the surface of the resin injection portion 42 of the packing member 4. The gate mark 42A is a protrusion or recess formed by cutting the resin of the gate 104A, and may be a burr, a depression, a gap, or a space. However, since the resin injection portion 42 is located at a position different from the water stop area S between the main body portion 2 and the lid portion 3, the water stop performance of the sealing member 4 is not impaired even if the gate mark 42A is formed in the resin injection portion 42. Therefore, high water stop performance of the sealing member 4 is ensured, and the water stop performance of the sealing member 4 can be improved.

[0019] As described above, the sealing member 4, which performs the water stop between the main body portion 2 and the lid portion 3, has the resin injection portion 42 in the non-water stop region N, which deviates from the water stop region S. Therefore, the resin injection portion 42 is not formed in the water stop region S, and irregularities due to the resin injection do not occur on a surface of the water stop region S.

[0020] In the housing box 1 according to the present embodiment, the resin injection portion 42 is formed to extend from the water stop area S to the inside of the lid portion 3. Therefore, irregularities due to resin injection do not occur on the surface of the water stop area S. Therefore, the housing box 1 can reliably secure the water stop function by the sealing member 4.

[0021] A housing box according to a second embodiment is described below.

[0022] Fig. 7 is an exploded perspective view of the housing box according to the second embodiment, and Fig. 8 is a cross-sectional view of the housing box along the line VIII-VIII in Fig. 7.

[0023] A housing box 1A according to the second embodiment is configured substantially similarly to the housing box 1 according to the first embodiment and differs in the configuration of the resin injection portion 42 of the filler 4. That is, they differ in that in the sealing member 4 of the housing box 1 according to the first embodiment, the resin injection portion 42 extends from the water stop region S to an inside of the lid portion 3, but in the sealing member 4 of the housing box 1A according to the second embodiment, the resin injection portion 42 extends from the water stop region S to an outside of the lid portion 3.

[0024] As in Fig.As shown in Fig. 8, the resin injection portion 42 is shaped to extend from the water-stopping region S in which the main body 41 is disposed to the outside of the lid portion 3. That is, the resin injection portion 42 is shaped to branch from the main body 41 and extend to the outside of the lid portion 3, and is shaped to penetrate the lid portion 3 and be exposed on an outer surface of the lid portion 3. By forming the resin injection portion 42 in this manner, the resin injection portion 42 is formed in the non-water-stopping region N that is not sandwiched between the main body portion 2 and the lid portion 3. Therefore, even if the resin injection portion 42 has a gate mark and the surface of the resin injection portion 42 has irregularities, the water-stopping performance of the sealing member 4 is not impaired.Therefore, the housing box 1A can reliably ensure the water-stopping performance of the sealing element 4.

[0025] The lid portion 3 and the sealing member 4 of the housing box 1A are manufactured, for example, by two-color molding, similar to the housing box 1 according to the first embodiment. In this case, when molding the sealing member 4, the second resin 111 is injected from the position exposed to the outer surface of the lid portion 3. Therefore, even if the irregularities of the gate mark are formed on the surface of the resin injection portion 42, it is not the water stop area S between the main body portion 2 and the lid portion 3, so the water stop function of the sealing member 4 is not impaired.

[0026] As described above, in the housing box 1A according to the present embodiment, the resin injection portion 42 is formed to extend from the water-stopping region S to the outside of the lid portion 3. Therefore, irregularities due to resin injection do not occur on the surface of the water-stopping region S. Therefore, the housing box 1A can reliably secure the water-stopping function by the sealing member 4. In addition, since the resin injection portion 42 penetrates the inside and outside of the lid portion 3, the sealing member 4 in the housing box 1A is hardly deflected by the water-stopping region S.

[0027] It should be noted that the housing box according to each embodiment of the present invention described above is not limited to the above-described embodiments, and various modifications can be made within the scope described in the claims. Furthermore, the housing box according to the present embodiment can be configured by appropriately combining the components of the embodiment and the above-described modifications.

[0028] For example, in the above-described embodiments, a case was described in which the housing box is attached to an electrical junction box mounted on a vehicle and accommodating electronic components, but the housing box according to the present invention may be attached to a housing box other than the electrical junction box. Further, in the above-described embodiments, the housing box in which the lid portion 3 is attached to the upper cover was described, but it may be configured as the housing box in which the lid portion 3 is attached to the lower cover. Moreover, it may be configured as the housing box to which the lid portion 3 is attached as the upper cover and the lower cover. Reference character list 1 HOUSING BOX 2 MAIN BODY SECTION 3 LID SECTION 4 SEALING ELEMENT 21 OPENING SECTION 42 RESIN INJECTION SECTION S WATER STOP AREA N NON-WATER STOP AREA QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] JP 2001-25135 A

[0003]

Claims

[1] A housing box comprising: a main body portion having an opening portion capable of accommodating electronic components therein and establishing communication between an inside and an outside; a lid portion attached to the main body portion and detachably secured to the opening portion; and a resin sealing member provided in the lid portion and arranged at least in a water stop area between the main body portion and the lid portion, and performing a water stop between the main body portion and the lid portion, wherein the sealing member has a resin injection portion formed in a non-water stop region connected to and deviating from the water stop region, and serving as a resin injection position during resin molding. [2] The housing box according to claim 1, wherein the resin injection portion is formed to extend from the water stop portion to an inside of the lid portion. [3] The housing box according to claim 1, wherein the resin injection portion extends from the water stop area to an outside of the lid portion and is formed to be exposed on an outer surface of the lid portion.

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