Housing and moving object

Abstract

The invention provides a housing and a moving body, which can restrain releasing of a snap fit state caused by external force. The housing is provided with: an outer box member provided with an outer wall part and an outer surface part; and an inner box member including an inner wall portion and an inner surface portion, the outer wall portion including a first wall portion and a second wall portion, and the inner wall portion including a third wall portion and a fourth wall portion, the case including: an outer mating portion of the first wall portion; the inner side of the third wall part is matched with a part; an outer engagement portion provided on the second wall portion; and an inner engagement portion provided on the fourth wall portion, the inner engagement portion engaging with the outer engagement portion in a first direction, which is a direction in which the first wall portion and the third wall portion are arranged, in a direction in which the outer engagement portion and the inner engagement portion are separated in a state in which the outer engagement portion and the inner engagement portion engage with each other.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a housing and a mobile body provided with the housing. BACKGROUND

[0002] In the past, there has been a method in which a main body and a lid are fixed by snap fit in a housing composed of the main body and the lid. In the housings described in Patent Documents 1, 2, 3, and 4, the lid is pressed into the main body using the softness of the material or the structure of the lid or the main body, and the fitted state is maintained using the resilience of the material or the structure of the lid or the main body.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT DOCUMENTS

[0005] Patent Document 1: Japanese Patent Application Publication No. 2004-179280

[0006] Patent Document 2: Japanese Patent Application Publication No. 2002-134963

[0007] Patent Document 3: Japanese Patent Application Publication No. 2015-085799

[0008] Patent Document 4: Japanese Patent Application Publication No. 2012-250697 SUMMARY

[0009] PROBLEMS TO BE SOLVED BY THE INVENTION

[0010] However, in the case where the housing is fixed to a structural member by fastening or the like, an external force based on the fastening is sometimes applied to the housing, and the lid or the main body becomes in a warped state and cannot maintain the snap fit state.

[0011] The present disclosure was made in view of the above-described problems, and provides a housing that can maintain a snap fit state even in the case where an external force is applied to the housing, and a mobile body provided with the housing.

[0012] SOLUTION TO PROBLEM

[0013] As one of the present disclosure, the housing has: an outer box member having an annular outer wall portion and an outer surface portion covering one end surface of the outer wall portion; and an inner box member having an annular inner wall portion arranged inside the outer wall portion and an inner surface portion covering one end surface of the inner wall portion, the outer wall portion has: a first wall portion; and a second wall portion arranged on a surface intersecting the first wall portion and continuous with the first wall portion, the inner wall portion has: a third wall portion arranged in opposition to the first wall portion; and a fourth wall portion arranged in opposition to the second wall portion, the housing has: an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer box member and the inner box member are fitted, that is, a fitting direction; an outer engagement portion provided to the second wall portion; and an inner engagement portion provided to the fourth wall portion, when fitting the outer box member and the inner box member, the inner engagement portion is not engaged with the outer engagement portion in a direction in which the first wall portion and the third wall portion are arranged, that is, a first direction, and in a state after the outer engagement portion and the inner engagement portion are engaged, the inner engagement portion is engaged with the outer engagement portion in a direction in which the outer engagement portion and the inner engagement portion are separated.

[0014] As one of the present disclosure, the mobile body has a housing mounted to a mobile body main body, the housing has: an outer box member having an annular outer wall portion and an outer surface portion covering one end surface of the outer wall portion; and an inner box member having an annular inner wall portion arranged inside the outer wall portion and an inner surface portion covering one end surface of the inner wall portion, the outer wall portion has: a first wall portion; and a second wall portion arranged on a surface intersecting the first wall portion and continuous with the first wall portion, the inner wall portion has: a third wall portion arranged in opposition to the first wall portion; and a fourth wall portion arranged in opposition to the second wall portion, the housing has: an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer box member and the inner box member are fitted, that is, a fitting direction; an outer engagement portion provided to the second wall portion; and an inner engagement portion provided to the fourth wall portion, when fitting the outer box member and the inner box member, the inner engagement portion is not engaged with the outer engagement portion in a direction in which the first wall portion and the third wall portion are arranged, that is, a first direction, and in a state after the outer engagement portion and the inner engagement portion are engaged, the inner engagement portion is engaged with the outer engagement portion in a direction in which the outer engagement portion and the inner engagement portion are separated.

[0015] Effects of the Invention

[0016] According to the present disclosure, even if an external force is applied to the housing at the time of mounting or the like, the snap-fit ​​state between the outer case member and the inner case member can be maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a perspective view showing the housing with the bracket mounted thereon.

[0018] Figure 2 It is a perspective view showing the housing in an exploded state.

[0019] Figure 3 This is a perspective view showing the corner portion of the outer box member turned upside down.

[0020] Figure 4 This is a side view showing a state in which the outer box member is made transparent and the outer box member and the inner box member are about to be fitted together.

[0021] Figure 5 This is a side view showing a state in which the outer box member and the inner box member are fitted together, with the outer box member being made see-through.

[0022] Figure 6 It is a side view schematically showing a moving object.

[0023] Description of Reference Numerals

[0024] 100. Shell; 110. Outer box member; 111. Outer wall portion; 112. Outer face portion; 113. First wall portion; 114. Second wall portion; 115. Outer fitting portion; 116. Outer snap-fit ​​portion; 117. Outer frame portion; 119. Mounting portion; 130. Inner box member; 131. Inner wall portion; 132. Inner face portion; 133. Third wall portion; 134. Fourth wall portion; 135. Inner fitting portion; 136. Inner snap-fit ​​portion; 137. Inner frame portion; 139. Determining portion; 150. Circuit substrate; 151. Printed circuit board; 152. Exposed component; 200. Bracket; 220. Moving body. DETAILED DESCRIPTION

[0025] Hereinafter, embodiments of the shell and the mobile body of the present disclosure will be described with reference to the accompanying drawings. In addition, the following embodiments are given as an example to illustrate the present disclosure and are not intended to limit the present disclosure. For example, the shape, structure, material, constituent elements, relative positional relationship, connection status, numerical value, mathematical formula, content of each stage in the method, order of each stage, etc. shown in the following embodiments are examples, and sometimes include content not described below. In addition, geometric expressions such as parallel and orthogonal are sometimes used, but these expressions do not indicate mathematical rigor, but include substantially permissible errors, offsets, etc. In addition, expressions such as simultaneous and identical also include substantially permissible ranges.

[0026] In addition, the drawings are schematic views in which emphasis, omission, or adjustment of scale has been appropriately made for the purpose of explanation of the present disclosure, and are different from actual shapes, positional relationships, and scales. In addition, the X axis, Y axis, and Z axis shown in the drawings sometimes represent orthogonal coordinates arbitrarily set for the purpose of explanation of the drawings. That is, the Z axis is not necessarily an axis along the vertical direction, and the X axis and Y axis are not necessarily present in the horizontal plane.

[0027] In addition, in the following, a plurality of inventions are sometimes collectively explained as one embodiment. In addition, a part of the content described below is explained as an arbitrary constituent element related to the present disclosure.

[0028] Figure 1 is a perspective view showing the case 100 with the bracket 200 mounted. Figure 2 is a perspective view showing the case 100 in an exploded state. The case 100 protects the members housed inside, and has an outer side box member 110 and an inner side box member 130.

[0029] The members housed in the case 100 are not limited. In the case of the present embodiment, the circuit board 150 is housed in the case 100. The circuit board 150 has a printed circuit board 151 on which a wiring is arranged, and a circuit member such as an electronic component and an electrical component mounted on the printed circuit board 151. The type of circuit formed by the circuit members electrically connected by the circuit board 150 is not limited, and in the case of the present embodiment, an acoustic circuit related to at least one of active noise control and active sound control is formed.

[0030] As shown in Figs. 1 and 2, the case 100 has an outer side wall portion 111 and an outer side surface portion 112. The outer side wall portion 111 is a portion that covers the outer side of the case 100. In the case of the present embodiment, the outer side wall portion 111 is a circular ring shape. The outer side surface portion 112 is a portion that covers one end opening surface of the circular ring-shaped outer side wall portion 111. In the case of the present embodiment, the outer side surface portion 112 is a rectangular plate shape, and the rectangular ring-shaped outer side wall portion 111 stands from the periphery of the outer side surface portion 112. Figure 1 Figure 2 As shown in Figs. 1 and 2, the case 100 has an outer side wall portion 111 and an outer side surface portion 112. The outer side wall portion 111 is a portion that covers the outer side of the case 100. In the case of the present embodiment, the outer side wall portion 111 is a circular ring shape. The outer side surface portion 112 is a portion that covers one end opening surface of the circular ring-shaped outer side wall portion 111. In the case of the present embodiment, the outer side surface portion 112 is a rectangular plate shape, and the rectangular ring-shaped outer side wall portion 111 stands from the periphery of the outer side surface portion 112.

[0031] The outer side surface portion 112 is a portion that covers one end opening surface of the circular ring-shaped outer side wall portion 111. In the case of the present embodiment, the outer side surface portion 112 is a rectangular plate shape, and the rectangular ring-shaped outer side wall portion 111 stands from the periphery of the outer side surface portion 112.

[0032] The outer side box member 110 is a member that forms the case 100 by fitting with the inner side box member 130, and has the outer side wall portion 111 and the outer side surface portion 112. In the case of the present embodiment, the outer side box member 110 functions as a lid. ​

[0033] The outer side wall portion 111 is a ring-shaped portion that stands up in a wall shape from the outer side surface portion 112. In the case of the present embodiment, the outer side wall portion 111 is a rectangular ring shape. Figure 3 is a perspective view in which the upper and lower sides of the outer side box member 110 are reversed and the corner portion is shown. The outer side wall portion 111 has a first wall portion 113 and a second wall portion 114 that is disposed on a face intersecting (in the case of the present embodiment, a face orthogonal to) the first wall portion 113 and is continuous with the first wall portion 113.

[0034] The first wall portion 113 is provided with an outer side engagement portion 115 that constitutes a snap-fit configuration. In the case of the present embodiment, the outer side engagement portion 115 is a rectangular hole that penetrates the first wall portion 113 in the thickness direction. An installation portion 119 for installing the case 100 to an object is provided on the outer side of the first wall portion 113. In the case of the present embodiment, the case 100 is installed to an object by means of a bracket 200 that is inserted into the installation portion 119.

[0035] The second wall portion 114 is provided with an outer side engaging portion 116. The shape of the outer side engaging portion 116 is not limited. In the case of the present embodiment, the outer side engaging portion 116 is a strip-shaped protrusion that protrudes from the inner surface of the second wall portion 114 toward the fourth wall portion 134 and extends in the direction in which the outer side box member 110 and the inner side box member 130 are fitted (the Z-axis direction in the drawing), that is, the fitting direction. In addition, the second wall portion 114 is provided with an outer side frame portion 117 through which the exposure member 152 passes. The outer side frame portion 117 is disposed at a position farther from the outer side engagement portion 115 than the outer side engaging portion 116 in the first direction (the X-axis direction in the drawing), which is the direction in which the first wall portion 113 and the third wall portion 133 are aligned. The shape of the outer side frame portion 117 is not limited and is a shape along the outer circumferential surface of the exposure member 152, and in the case of the present embodiment, a notch is formed. Furthermore, the outer side frame portion 117 can also be formed with a through hole.

[0036] The inner side box member 130 is a member that forms the case 100 by being fitted with the outer side box member 110 and has an inner side wall portion 131 and an inner side surface portion 132. In the case of the present embodiment, the inner side box member 130 functions as a box with one face open.

[0037] The inner side surface portion 132 is a portion that covers the open face of the one end of the ring-shaped inner side wall portion 131. In the case of the present embodiment, the inner side surface portion 132 is a rectangular plate shape, and the rectangular ring-shaped inner side wall portion 131 stands up from the periphery of the inner side surface portion 132.

[0038] The inner side wall portion 131 is a wall-like portion that rises from the inner side surface portion 132, and is a portion that is arranged along the outer side wall portion 111 on the inner side thereof. In the case of the present embodiment, the inner side wall portion 131 is a rectangular ring shape that corresponds to the outer side wall portion 111. The inner side wall portion 131 has a third wall portion 133 that is arranged in opposition to the first wall portion 113, and a fourth wall portion 134 that is arranged in opposition to the second wall portion 114.

[0039] The third wall portion 133 is provided with an inner side engaging portion 135 that constitutes a snap-fit configuration. In the case of the present embodiment, the inner side engaging portion 135 is provided in a protruding manner from the third wall portion 133 toward the first wall portion 113. The inner side engaging portion 135 is engaged with the outer side engaging portion 115 in the fitting direction by snap-fit. In the case of the present embodiment, the inner side engaging portion 135 is a rectangular protrusion that can be fitted into the outer side engaging portion 115, and has an inclined portion in which the amount of protrusion toward the outer side surface portion 112 decreases in the fitting direction.

[0040] Furthermore, the snap-fit configuration is not limited to one location, and can be provided at multiple locations of the first wall portion 113 and the third wall portion 133, and can also be provided at other portions. In addition, it can also be that the outer side engaging portion 115 is a convex configuration, and the inner side engaging portion 135 is a concave configuration (including a through-hole).

[0041] The fourth wall portion 134 is provided with an inner side engaging portion 136. The inner side engaging portion 136 is a portion that engages with the outer side engaging portion 116 in the first direction (the X-axis direction in the drawing) in a state in which the outer side box member 110 and the inner side box member 130 are fitted. When fitting the outer side box member 110 and the inner side box member 130, that is, in a state in which the outer side wall portion 111 and the inner side wall portion 131 overlap as shown in FIG. 6, the inner side engaging portion 136 does not engage with the outer side engaging portion 116. Figure 4 Therefore, when the lower end portion of the first wall portion 113 passes over the inner side engaging portion 135, the outer side engaging portion 116 and the inner side engaging portion 136 are not engaged, and thus elastic deformation of the first wall portion 113 that bends toward the outside is not restricted. Also, since the inner side engaging portion 136 and the outer side engaging portion 116 are not engaged, elastic deformation of the third wall portion 133 that bends toward the inside is not restricted.

[0042] After that, as shown in FIG. 7, the outer side box member 110 and the inner side box member 130 are fitted. Figure 5As shown, in the state in which the outer side fitting portion 115 and the inner side fitting portion 135 are engaged, that is, in the snap-fit state, the outer side engaging portion 116 and the inner side engaging portion 136 are engaged in a direction (X-axis direction in the drawing) in which the outer side fitting portion 115 and the inner side fitting portion 135 are separated. Therefore, for example, even in a case in which an external force is applied to the first wall portion 113 from the inner side fitting portion 135 in a direction in which the outer side fitting portion 115 is separated from the inner side fitting portion 135 by the bracket 200 mounted to the mounting portion 119 when the housing 100 is mounted to an object, the outer side engaging portion 116 and the inner side engaging portion 136 in the engaged state are able to overcome the external force and are able to maintain the snap-fit state.

[0043] The fourth wall portion 134 is provided with an inner side frame portion 137 through which the exposed member 152 passes. The inner side frame portion 137 is disposed at a position farther from the inner side fitting portion 135 than the inner side engaging portion 136 in the first direction (X-axis direction in the drawing). The shape of the inner side frame portion 137 is not limited and is a shape along the outer circumferential surface of the exposed member 152, and in the present embodiment, a notch is formed. In addition, the inner side frame portion 137 can also be formed with a through hole.

[0044] In the present embodiment, as shown in Figure 2 The inner side engaging portion 136 is one of the plurality of protruding determination portions 139 disposed between the outer side wall portion 111 and the inner side wall portion 131 and determining the positional relationship (interval) of the outer side wall portion 111 and the inner side wall portion 131. That is, the inner side engaging portion 136 is a portion that also functions as a determination portion 139, and the amount of protrusion of the inner side engaging portion 136 in the direction toward the outer side wall portion 111 is the same as the amount of protrusion of at least one determination portion 139 in the direction toward the outer side wall portion 111. In addition, the outer side engaging portion 116 can also function as a determination portion 139.

[0045] The material of at least one of the outer side case member 110 and the inner side case member 130 is not limited as long as it has elasticity that enables the snap-fit state to be formed. For example, as the material of at least one of the outer side case member 110 and the inner side case member 130, a resin can be exemplified. As the resin, ABS (acrylonitrile-butadiene-styrene), ABS containing PC (polycarbonate) as a contained material, ASA (acrylate-styrene-acrylonitrile), SAN (styrene-acrylonitrile), and PP (polypropylene) can be exemplified. In addition, a glass fiber or the like can be contained as a reinforcing material in the resin. As a specific elastic modulus of the material constituting the housing 100, 2,000 MPa to 2,500 MPa or thereabouts can be exemplified. This elastic modulus can be achieved by adjusting the amount of a contained substance such as butadiene, acrylate rubber, or the like in the resin.

[0046] Further, the present disclosure is not limited to the above-described embodiments. For example, other embodiments achieved by arbitrarily combining the configuration elements described in the present specification or by excluding some of the configuration elements can be included as embodiments of the present disclosure. In addition, modifications obtained by carrying out various modifications of the above-described embodiments within the scope that does not depart from the gist of the present disclosure, i.e., the meaning represented by the description of the claims, are also included in the present disclosure.

[0047] For example, as shown in FIG. 1, the housing 100 can also have the snap-fit structure composed of a plurality of sets of the outer-side engagement portion 115 and the inner-side engagement portion 135 at the wall portion pair composed of the first wall portion 113 and the third wall portion 133, and the like. In addition, the snap-fit structure can also be provided at other wall portion pairs. Figure 1 Figure 2 As shown in FIG. 1, the housing 100 can also have the snap-fit structure composed of a plurality of sets of the outer-side engagement portion 115 and the inner-side engagement portion 135 at the wall portion pair composed of the first wall portion 113 and the third wall portion 133, and the like. In addition, the snap-fit structure can also be provided at other wall portion pairs.

[0048] In addition, the engagement structure composed of the outer-side engagement portion 116 and the inner-side engagement portion 136 can also be provided not only at one end portion of the wall portion pair, but also at the other end portion. In addition, the engagement structure can also be provided at other wall portion pairs.

[0049] In addition, as shown in FIG. 1, the housing 100 can also be implemented as a mobile body 220. As the mobile body 220, a car, an airplane, a ship, and the like can be exemplified. The housing 100 provided to the mobile body 220 can also house a circuit board 150 on which an ECU (Electronic Control Unit) that electronically controls all or a part of the functions of the mobile body 220, an amplifier for audio, a circuit that implements active noise control, active sound control, and the like are mounted. Figure 6

[0050] (SUMMARY)

[0051] ​​The housing 100 of the first technical solution has: an outer box member 110 having an annular outer wall portion 111 and an outer surface portion 112 covering one end surface of the outer wall portion 111; and an inner box member 130 having an annular inner wall portion 131 arranged on the inner side of the outer wall portion 111 and an inner surface portion 132 covering one end surface of the inner wall portion 131, the outer wall portion 111 has: a first wall portion 113; and a second wall portion 114 arranged on a surface intersecting the first wall portion 113 and continuous with the first wall portion 113, the inner wall portion 131 has: a third wall portion 133 arranged in opposition to the first wall portion 113; and a fourth wall portion 134 arranged in opposition to the second wall portion 114, the housing 100 has: an outer engagement portion 115 provided on the first wall portion 113; an inner engagement portion 135 provided on the third wall portion 133 and engaged with the outer engagement portion 115 by snap engagement in a direction in which the outer box member 110 and the inner box member 130 are fitted, namely, a fitting direction; an outer engagement portion 116 provided on the second wall portion 114; and an inner engagement portion 136 provided on the fourth wall portion 134, in a direction in which the first wall portion 113 and the third wall portion 133 are arranged, namely, a first direction, when the outer box member 110 and the inner box member 130 are fitted, the inner engagement portion 136 is not engaged with the outer engagement portion, and in a direction in which the outer engagement portion 115 and the inner engagement portion 135 are separated after the outer engagement portion 115 and the inner engagement portion 135 are engaged, the inner engagement portion 136 is engaged with the outer engagement portion.

[0052] According to the first technical solution, when the outer box member 110 and the inner box member 130 are fitted, the outer engagement portion 116 and the inner engagement portion 136 are not engaged, and elastic deformation of the first wall portion 113 and the third wall portion 133 for forming a snap engagement state can be allowed. After the snap engagement state is formed, that is, in a state in which the housing 100 is formed, the outer engagement portion 116 and the inner engagement portion 136 are engaged, and thus the snap engagement state can be maintained even when an external force is applied to the first wall portion 113.

[0053] The housing 100 of the second technical solution includes the first technical solution, wherein the housing 100 has a mounting portion 119 on the outer side of the first wall portion 113 for mounting the housing 100 to an object.

[0054] According to the second technical solution, when the housing 100 is mounted to the object, an external force is applied to the first wall portion 113 via the mounting portion 119, but in the housing 100 of the present disclosure, the engaged outer engagement portion 116 and the inner engagement portion 136 can overcome the external force applied via the mounting portion 119, and the snap engagement state can be maintained.

[0055] The third technical solution includes the first technical solution or the second technical solution, wherein the shell 100 accommodates a circuit substrate 150, the second wall portion 114 has an outer frame portion 117 for an exposed component 152 installed on the circuit substrate 150 and exposed from the shell 100 to pass through, and the fourth wall portion 134 has an inner frame portion 137 for the exposed component 152 to pass through.

[0056] According to the third technical solution, the wall pair equipped with the outer frame portion 117 and the inner frame portion 137 has weaker structural strength than other wall pairs without frame portions and is easily deformed by external forces. However, since the outer snap-fit ​​portion 116 and the inner snap-fit ​​portion 136 are snap-fitted, the snap-fit ​​state can be effectively maintained.

[0057] The shell 100 of the fourth technical solution includes any one of the first to third technical solutions, wherein at least one of the outer snap-fit ​​portion 116 and the inner snap-fit ​​portion 136 is one of a plurality of protruding determining portions 139 that are arranged between the outer wall portion 111 and the inner wall portion 131 and determine the positional relationship between the outer wall portion 111 and the inner wall portion 131.

[0058] According to the fourth embodiment, at least one of the outer engaging portion 116 and the inner engaging portion 136 also functions as the determining portion 139 , thereby simplifying the structure of the housing 100 .

[0059] The housing 100 of the fifth technical solution includes any one of the first to fourth technical solutions, wherein the circuit substrate 150 is formed with an acoustic circuit related to at least one of active noise control and active sound control.

[0060] The fifth technical solution is one of the embodiments of the housing 100 .

[0061] The shell 100 of the sixth technical solution includes any one of the first to fifth technical solutions, wherein the material of the shell 100 includes at least one of ABS (acrylonitrile-butadiene-styrene), ASA (acrylate-styrene-acrylonitrile), SAN (styrene-acrylonitrile) and PP (polypropylene).

[0062] According to the sixth aspect, elastic deformation of the wall portion pair when the snap-fit ​​state is formed can be permitted.

[0063] The housing 100 of the seventh technical solution includes the sixth technical solution, wherein the material includes a reinforced material.

[0064] According to the seventh embodiment, it is possible to achieve both elastic deformation and rigidity of the housing 100 .

[0065] The housing 100 according to an eighth technical solution includes any one of the first to seventh technical solutions, wherein the elastic modulus of the material of the housing 100 is selected from a range of 2,000 MPa to 2,500 MPa.

[0066] According to the eighth aspect, the outer case member 110 and the inner case member 130 can be easily fitted together to form a snap-fit ​​state, and the strength of the housing 100 can be ensured.

[0067] The mobile body 220 of the ninth technical solution includes a housing 100 installed on the main body of the mobile body 220, and the housing 100 includes: an outer box member 110, which includes an annular outer wall portion 111 and an outer surface portion 112 covering one end surface of the outer wall portion 111; and an inner box member 130, which includes an annular inner wall portion 131 arranged on the inner side of the outer wall portion 111 and an inner surface portion 132 covering one end surface of the inner wall portion 131, the outer wall portion 111 includes: a first wall portion 113; and a second wall portion 114, which is arranged on a surface intersecting with the first wall portion 113 and continuous with the first wall portion 113, the inner wall portion 131 includes: a third wall portion 133, which is arranged opposite to the first wall portion 113; and a fourth wall portion 134, which is arranged opposite to the second wall portion 114, and the housing 100 includes: The outer fitting portion 115 is provided on the first wall portion 113; the inner fitting portion 135 is provided on the third wall portion 133, and is engaged with the outer fitting portion 115 by snap-fitting in the direction in which the outer box member 110 and the inner box member 130 are engaged, i.e., the engaging direction; the outer snap-fitting portion 116 is provided on the second wall portion 114; and the inner snap-fitting portion 136 is provided on the fourth wall portion 134. When the outer box member 110 and the inner box member 130 are engaged, the inner snap-fitting portion 136 does not engage with the outer snap-fitting portion in the direction in which the first wall portion 113 and the third wall portion 133 are arranged, i.e., the first direction. When the outer fitting portion 115 and the inner fitting portion 135 are engaged, the inner snap-fitting portion 136 engages with the outer snap-fitting portion in the direction in which the outer fitting portion 115 and the inner fitting portion 135 are separated.

[0068] According to the ninth technical solution, when the outer case member 110 and the inner case member 130 of the housing 100 of the mobile body 220 are mated, the outer engaging portion 116 and the inner engaging portion 136 are not engaged, allowing elastic deformation of the first wall portion 113 and the third wall portion 133 to form a snap-fit ​​state. After the snap-fit ​​state is formed, that is, when the housing 100 is formed, the outer engaging portion 116 and the inner engaging portion 136 are engaged, so the snap-fit ​​state can be maintained even when an external force is applied to the first wall portion 113.

[0069] Industrial applicability

[0070] The present disclosure can be utilized for a housing to which an external force is likely to be applied. In addition, it can be utilized for a mobile body such as an automobile, a ship, an airplane, or the like.

Claims

1.A housing comprising: an outer case member including an annular outer wall portion and an outer surface portion covering one end surface of the outer wall portion; and an inner case member including an annular inner wall portion disposed inside the outer wall portion and an inner surface portion covering one end surface of the inner wall portion, the outer wall portion including: a first wall portion; and a second wall portion disposed in a surface intersecting the first wall portion and continuous with the first wall portion, the inner wall portion including: a third wall portion disposed in an opposing relationship with the first wall portion; and a fourth wall portion disposed in an opposing relationship with the second wall portion, the housing including: an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer case member and the inner case member are fitted, namely, a fitting direction; an outer engagement portion provided to the second wall portion; and an inner engagement portion provided to the fourth wall portion, the inner engagement portion not engaged with the outer engagement portion in a direction in which the first wall portion and the third wall portion are aligned, namely, a first direction, when the outer case member and the inner case member are fitted, and the inner engagement portion engaged with the outer engagement portion in a direction in which the outer engagement portion and the inner engagement portion are separated after the outer engagement portion and the inner engagement portion are engaged. 2.The housing according to claim 1, wherein the housing includes a mounting portion for mounting the housing to an object on an outer side of the first wall portion. 3.The housing according to claim 1 or 2, wherein the housing houses a circuit board, the second wall portion includes an outer frame portion through which an exposed member mounted to the circuit board and exposed from the housing passes, and the fourth wall portion includes an inner frame portion through which the exposed member passes. 4.The housing according to claim 1 or 2, wherein at least one of the outer engagement portion and the inner engagement portion is one of a plurality of protruding determination portions disposed between the outer wall portion and the inner wall portion and determining a positional relationship between the outer wall portion and the inner wall portion. 5.The housing according to claim 3, wherein the circuit board is formed with an acoustic circuit related to at least one of active noise control and active sound control. 6.The housing according to claim 1 or 2, wherein a material of the housing includes at least one of ABS: acrylonitrile-butadiene-styrene, ASA: acrylate-styrene-acrylonitrile, SAN: styrene-acrylonitrile, and PP: polypropylene. 7.The housing according to claim 6, wherein the material includes a reinforcing material. 8.The housing according to claim 1 or 2, wherein an elastic modulus of the material of the housing is selected from a range of 2,000 MPa or more and 2,500 MPa or less. 9.A mobile body including a housing mounted to a mobile body main body, the housing including: an outer case member including an annular outer wall portion and an outer surface portion covering one end surface of the outer wall portion; and an inner case member including an annular inner wall portion disposed inside the outer wall portion and an inner surface portion covering one end surface of the inner wall portion. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The inner case member includes an annular inner wall portion disposed inside the outer wall portion, and an inner surface portion covering one end surface of the inner wall portion, The outer wall portion includes: a first wall portion; and a second wall portion disposed on a surface intersecting the first wall portion and continuous with the first wall portion, The inner wall portion includes: a third wall portion disposed in opposition to the first wall portion; and a fourth wall portion disposed in opposition to the second wall portion, The housing includes: an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer case member and the inner case member are fitted, i.e., a fitting direction; an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer case member and the inner case member are fitted, i.e., a fitting direction; an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer case member and the inner case member are fitted, i.e., a fitting direction; an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer case member and the inner case member are fitted, i.e., a fitting direction; an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer case member and the inner case member are fitted, i.e., a fitting direction; an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer case member and the inner case member are fitted, i.e., a fitting direction; an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer case member and the inner case member are fitted, i.e., a fitting direction; an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer case member and the inner case member are fitted, i.e., a fitting direction; an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer case member and the inner case member are fitted, i.e., a fitting direction; an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which the outer case member and the inner case member are fitted, i.e., a fitting direction; an outer engagement portion provided to the first wall portion; an inner engagement portion provided to the third wall portion and engaged with the outer engagement portion by snap engagement in a direction in which

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