Housing, and mobile

Abstract

To provide a housing capable of preventing the release of the snap-fit state due to external force.SOLUTION: A housing 100 includes: an outer box member 110 that has an outer wall 111 and an outer side surface 112; and an inner box member 130 that has an inner wall 131 and an inner side surface 132. The outer wall 111 includes a first wall 113 and a second wall 114. The inner wall 131 includes a third wall 133 and a fourth wall 134. The housing includes: an outer fitting part 115 of the first wall 113; an inner fitting part 135 of the third wall 133; an outer engagement part 116 that is formed in the second wall 114; and an inner engagement part 136 that is formed in the fourth wall 134 to engage with the outer engagement part, in a first direction where the first wall 113 and the third wall 133 are aligned, and in the state where the outer fitting part 115 and the inner fitting part 135 are engaged, in a direction where the outer fitting part 115 and the inner fitting part 135 are separated away from each other.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a housing and a mobile object including the housing. [Background technology]

[0002] Conventionally, in a housing consisting of a body and a lid that are fitted together, there is a method of fixing the body and the lid by snap fitting. In the housings described in Patent Documents 1, 2, 3, and 4, the lid can be pushed into the body due to the material or structural flexibility of the lid or body, and the fitted state is maintained due to the material or structural resilience of the lid or body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-179280 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-134963 [Patent Document 3] Japanese Patent Application Laid-Open No. 2015-085799 [Patent Document 4] Japanese Patent Application Laid-Open No. 2012-250697 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the housing is fixed to a structural member by fastening or the like, an external force is applied to the housing by fastening, and the cover or main body may become warped, making it impossible to maintain the snap-fit ​​state.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and provides a housing that can maintain a snap-fit ​​state even when an external force is applied to the housing, and a mobile object that includes the housing. [Means for solving the problem]

[0006] A housing according to the present disclosure comprises 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, wherein the outer wall portion comprises a first wall portion and a second wall portion arranged on a plane intersecting with the first wall portion and continuous with the first wall portion, the inner wall portion comprises a third wall portion arranged opposite to the first wall portion and a fourth wall portion arranged opposite to the second wall portion, and an outer fitting portion provided on the first wall portion and a fourth fitting portion provided on the third wall portion. an inner fitting portion that engages with the outer fitting portion by snap-fitting in a fitting direction that is a direction in which the outer box member and the inner box member are fitted together; an outer engaging portion that is provided on the second wall portion; and an inner engaging portion that is provided on the fourth wall portion that does not engage with the outer engaging portion when the outer box member and the inner box member are fitted together in a first direction that is a direction in which the first wall portion and the third wall portion are aligned, but engages with the outer engaging portion in a direction in which the outer fitting portion and the inner fitting portion move away from each other when the outer fitting portion and the inner fitting portion are engaged with each other.

[0007] A movable body according to the present disclosure comprises a housing attached to a movable body main body, the housing comprising: an outer box member having an annular outer wall portion and an outer surface portion covering one end face 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 face of the inner wall portion, the outer wall portion comprising a first wall portion and a second wall portion arranged on a plane intersecting with the first wall portion and continuous with the first wall portion, the inner wall portion comprising a third wall portion arranged opposite to the first wall portion and a fourth wall portion arranged opposite to the second wall portion, and an outer fitting portion provided on the first wall portion. an inner fitting portion provided on the third wall portion and engaging with the outer fitting portion by snap-fitting in a mating direction which is the direction in which the outer box member and the inner box member are mated; an outer engaging portion provided on the second wall portion; and an inner engaging portion provided on the fourth wall portion and in a first direction which is the direction in which the first wall portion and the third wall portion are aligned, which does not engage with the outer engaging portion when the outer box member and the inner box member are mated but engages with the outer engaging portion in a direction in which the outer fitting portion and the inner fitting portion move away from each other when the outer fitting portion and the inner fitting portion are engaged. [Effects of the Invention]

[0008] According to the present disclosure, even if an external force is applied to the housing during installation or the like, the snap-fit ​​state between the outer box member and the inner box member can be maintained. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is a perspective view showing a housing to which a bracket is attached. [Figure 2] FIG. 2 is a perspective view showing the housing in an exploded state. [Figure 3] FIG. 2 is a perspective view showing a corner portion of the outer box member turned upside down. [Figure 4] 10 is a side view showing the state in which the outer box member is in a transparent state and the inner box member is fitted together. FIG. [Figure 5]FIG. 10 is a side view showing the outer box member and the inner box member fitted together with the outer box member in a transparent state. [Figure 6] FIG. 2 is a side view schematically showing the moving body. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of a housing and a moving body according to the present disclosure will be described with reference to the drawings. Note that the following embodiments are presented as examples to explain the present disclosure and are not intended to limit the present disclosure. For example, the shapes, structures, materials, components, relative positional relationships, connection states, numerical values, mathematical formulas, the content of each step in a method, and the order of each step shown in the following embodiments are examples and may include content not described below. Furthermore, while geometric expressions such as parallel and orthogonal may be used, these expressions do not indicate mathematical precision and include substantially acceptable errors, deviations, and the like. Furthermore, expressions such as simultaneous and identical also include substantially acceptable ranges.

[0011] The drawings are schematic diagrams in which emphasis, omission, or adjustment of proportions has been appropriately made to explain the present disclosure, and differ from the actual shapes, positional relationships, and proportions. The X-axis, Y-axis, and Z-axis shown in the drawings represent Cartesian coordinates arbitrarily set for the purpose of illustrating the drawings. In other words, the Z-axis is not necessarily an axis along the vertical direction, and the X-axis and Y-axis are not necessarily located within a horizontal plane.

[0012] In addition, multiple inventions may be collectively described below as one embodiment, and some of the content described below may be described as optional components related to the present disclosure.

[0013] Fig. 1 is a perspective view showing the housing 100 to which the bracket 200 is attached. Fig. 2 is a perspective view showing the housing 100 in a disassembled state. The housing 100 protects the components housed inside, and includes an outer box member 110 and an inner box member 130.

[0014] The components housed in housing 100 are not limited. In the present embodiment, housing 100 houses circuit board 150. Circuit board 150 includes printed circuit board 151 on which wiring is performed, and circuit components such as electronic components and electric components mounted on printed circuit board 151. The type of circuit formed by the circuit components electrically connected by circuit board 150 is not limited, but in the present embodiment, an acoustic circuit related to at least one of active noise control and active sound control is formed.

[0015] As shown in FIGS. 1 and 2, an exposed component 152 is attached to the circuit board 150. The exposed component 152 is one of the components attached to the circuit board 150 and penetrates the housing 100 from the inside to the outside. In the present embodiment, the exposed component 152 is a connector for communication from outside the housing 100, for supplying power, and for acquiring signals from sensors. In the present embodiment, two exposed components 152 are attached to the circuit board 150. The shape of the circuit board 150 is not limited, but in the present embodiment, it is a rectangular plate.

[0016] The outer surface portion 112 is a portion that covers one end opening surface of the annular outer wall portion 111. In the present embodiment, the outer surface portion 112 is a rectangular plate, and the rectangular annular outer wall portion 111 rises from the periphery of the outer surface portion 112.

[0017] The outer box member 110 is a member that forms the housing 100 by fitting with the inner box member 130, and includes an outer wall portion 111 and an outer side surface portion 112. In the present embodiment, the outer box member 110 functions as a lid.

[0018] The outer wall portion 111 is a ring-shaped portion that rises in a wall-like shape from the outer surface portion 112. In the present embodiment, the outer wall portion 111 is a rectangular ring-shaped portion. FIG. 3 is a perspective view showing a corner portion of the outer box member 110 when turned upside down. The outer wall portion 111 includes a first wall portion 113 and a second wall portion 114 that is arranged on a plane that intersects with the first wall portion 113 (in the present embodiment, a plane that is perpendicular to the first wall portion 113) and is continuous with the first wall portion 113.

[0019] The first wall portion 113 is provided with an outer fitting portion 115 that forms a snap-fit ​​structure. In the present embodiment, the outer fitting portion 115 is a rectangular hole that penetrates the first wall portion 113 in the thickness direction. An attachment portion 119 for attaching the housing 100 to an object is provided on the outside of the first wall portion 113. In the present embodiment, the housing 100 is attached to the object via a bracket 200 inserted into the attachment portion 119.

[0020] The second wall portion 114 is provided with an outer engagement portion 116. The shape of the outer engagement portion 116 is not limited. In this embodiment, the outer engagement 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 fitting direction, which is the direction in which the outer box member 110 and the inner box member 130 are fitted together (the Z-axis direction in the figure). The second wall portion 114 is also provided with an outer frame portion 117 through which the exposed component 152 is pierced. The outer frame portion 117 is positioned farther from the outer fitting portion 115 than the outer engagement portion 116 in the first direction, which is the direction in which the first wall portion 113 and the third wall portion 133 are aligned (the X-axis direction in the figure). The shape of the outer frame portion 117 is not limited, but is a shape that follows the outer peripheral surface of the exposed component 152, and in this embodiment, a notch is formed. Note that the outer frame portion 117 may have a through-hole formed therein.

[0021] Inner box member 130 is a member that forms housing 100 by fitting with outer box member 110, and includes an inner wall portion 131 and an inner side surface portion 132. In the present embodiment, inner box member 130 functions as a box with one open side.

[0022] The inner surface portion 132 is a portion that covers one end opening surface of the annular inner wall portion 131. In the present embodiment, the inner surface portion 132 is a rectangular plate, and the rectangular annular inner wall portion 131 rises from the peripheral edge of the inner surface portion 132.

[0023] The inner wall portion 131 is an annular portion that rises in a wall-like shape from the inner side surface portion 132, and is a portion that is arranged along the outer wall portion 111 on the inside of the outer wall portion 111. In the present embodiment, the inner wall portion 131 is a rectangular annular portion that corresponds to the outer wall portion 111. The inner wall portion 131 includes a third wall portion 133 that is arranged opposite the first wall portion 113, and a fourth wall portion 134 that is arranged opposite the second wall portion 114.

[0024] The third wall portion 133 is provided with an inner fitting portion 135 that forms a snap-fit ​​structure. In the present embodiment, the inner fitting portion 135 is provided so as to protrude from the third wall portion 133 toward the first wall portion 113. The inner fitting portion 135 engages with the outer fitting portion 115 by snap-fitting in the fitting direction. In the present embodiment, the inner fitting portion 135 is a rectangular protrusion that can be fitted into the outer fitting portion 115, and has an inclined portion whose protrusion amount decreases toward the outer surface portion 112 in the fitting direction.

[0025] The snap-fit ​​structure is not limited to one location, and may be provided in multiple locations on the first wall portion 113 and the third wall portion 133, or may be provided in other locations. Also, the outer fitting portion 115 may have a convex structure, and the inner fitting portion 135 may have a concave structure (including a through-hole).

[0026] The fourth wall portion 134 is provided with an inner engagement portion 136. When the outer box member 110 and the inner box member 130 are fitted together, the inner engagement portion 136 engages with the outer engagement portion 116 in the first direction (the X-axis direction in the figure). When the outer box member 110 and the inner box member 130 are fitted together, that is, when a portion of the outer wall portion 111 and a portion of the inner wall portion 131 overlap as shown in FIG. 4, the inner engagement portion 136 does not engage with the outer engagement portion 116. Therefore, when the lower end of the first wall portion 113 climbs over the inner fitting portion 135, the outer engagement portion 116 and the inner engagement portion 136 do not engage with each other, and therefore, the first wall portion 113 is not restricted from elastically deforming and bending outward. Similarly, because the inner engagement portion 136 and the outer engagement portion 116 do not engage with each other, the third wall portion 133 is not restricted from elastically deforming and bending inward.

[0027] 5, when the outer fitting portion 115 and the inner fitting portion 135 are engaged with each other, that is, in a snap-fit ​​state, the outer engaging portion 116 and the inner engaging portion 136 engage with each other in a direction (the X-axis direction in the figure) that moves the outer fitting portion 115 and the inner fitting portion 135 apart. Therefore, even if an external force is applied to the first wall portion 113 from the bracket 200 attached to the mounting portion 119 in a direction that moves the outer fitting portion 115 away from the inner fitting portion 135, for example, when attaching the housing 100 to an object, the outer engaging portion 116 and the inner engaging portion 136 in an engaged state can resist the external force, and the snap-fit ​​state can be maintained.

[0028] The fourth wall portion 134 is provided with an inner frame portion 137 through which the exposed part 152 is pierced. The inner frame portion 137 is disposed at a position farther from the inner fitting portion 135 than the inner engaging portion 136 in the first direction (the X-axis direction in the figure). The shape of the inner frame portion 137 is not limited, but is a shape that follows the outer peripheral surface of the exposed part 152, and in this embodiment, a notch is formed. Note that the inner frame portion 137 may have a through hole formed therein.

[0029] 2, the inner engagement portion 136 is disposed between the outer wall portion 111 and the inner wall portion 131, and is one of a plurality of protruding determining portions 139 that determine the positional relationship (spacing) between the outer wall portion 111 and the inner wall portion 131. In other words, the inner engagement portion 136 is a portion that also functions as the determining portion 139, and the inner engagement portion 136 and at least one of the determining portions 139 have the same amount of protrusion in the direction toward the outer wall portion 111. Note that the outer engagement portion 116 may also function as the determining portion 139.

[0030] The material of at least one of the outer box member 110 and the inner box member 130 is not limited as long as it has elasticity sufficient to form a snap-fit ​​state. For example, resin can be used as the material of at least one of the outer box member 110 and the inner box member 130. Examples of resin include ABS (acrylonitrile butadiene styrene), ABS containing PP (polycarbonate), ASA (acrylate styrene acrylonitrile), SAN (styrene acrylonitrile), and PP (polypropylene). Furthermore, the resin may contain glass fiber or other reinforcing materials. A specific example of the elastic modulus of the material constituting the housing 100 is approximately 2,000 to 2,500 MPa. This elastic modulus can be achieved by adjusting the amount of butadiene, acrylate rubber, or other ingredients in the resin.

[0031] It should be noted that the present disclosure is not limited to the above-described embodiments. For example, the present disclosure may be embodied in another embodiment realized by any combination of the components described in this specification or by excluding some of the components. Furthermore, the present disclosure also includes modifications obtained by applying various modifications to the above-described embodiments that would occur to a person skilled in the art without departing from the spirit of the present disclosure, i.e., the meaning of the wording of the claims.

[0032] 1 and 2, the housing 100 may have a plurality of snap-fit ​​structures each consisting of a pair of outer fitting portion 115 and inner fitting portion 135 on a pair of opposing walls, such as the first wall portion 113 and the third wall portion 133. Snap-fit ​​structures may also be provided on other pairs of walls.

[0033] Furthermore, the engagement structure consisting of the outer engagement portion 116 and the inner engagement portion 136 may be provided not only at one end of one wall pair but also at the other end, or may be provided at other wall pairs.

[0034] 6, it may be realized as a mobile object 220 including a housing 100. Examples of the mobile object 220 include an automobile, an airplane, and a ship. The housing 100 included in the mobile object 220 may house a circuit board 150 incorporating an ECU (Electronic Control Unit) that electronically controls all or part of the functions of the mobile object 220, an audio amplifier, active noise control, active sound control, and the like.

[0035] (summary) The housing 100 of the first embodiment comprises 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 inside 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 having a first wall portion 113 and a second wall portion 114 arranged on a plane intersecting with the first wall portion 113 and continuous with the first wall portion 113, the inner wall portion 131 having a third wall portion 133 arranged opposite the first wall portion 113 and a fourth wall portion 134 arranged opposite the second wall portion 114, an outer fitting portion 115 provided on the first wall portion 113, and a fourth wall portion 134 arranged opposite the second wall portion 114. The housing is provided with an inner fitting portion 135 provided on the third wall portion 133, which engages with the outer fitting portion 115 by snap-fitting in the mating direction, which is the direction in which the outer box member 110 and the inner box member 130 are mated; 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, which does not engage with the outer engagement portion when the outer box member 110 and the inner box member 130 are mated in the first direction, which is the direction in which the first wall portion 113 and the third wall portion 133 are aligned, but engages with the outer engagement portion in the direction in which the outer fitting portion 115 and the inner fitting portion 135 move away from each other when the outer fitting portion 115 and the inner fitting portion 135 are engaged.

[0036] According to the first aspect, when outer box member 110 and inner box member 130 are fitted together, outer engaging portion 116 and inner engaging portion 136 are not engaged with each other, and elastic deformation of first wall portion 113 and third wall portion 133 to form a snap-fit ​​state can be permitted. After the snap-fit ​​state is formed, that is, in a state where housing 100 is formed, outer engaging portion 116 and inner engaging portion 136 are engaged with each other, and therefore the snap-fit ​​state can be maintained even when an external force is applied to first wall portion 113.

[0037] The housing 100 of the second embodiment includes the housing 100 of the first embodiment, and is provided with an attachment portion 119 on the outside of the first wall portion 113 for attaching the housing 100 to an object.

[0038] According to the second aspect, when attaching the housing 100 to an object, an external force is applied to the first wall portion 113 via the mounting portion 119, but the housing 100 of the present disclosure is able to withstand the external force applied via the mounting portion 119 by the engaged outer engaging portion 116 and inner engaging portion 136, and is able to maintain a snap-fit ​​state.

[0039] The third embodiment includes the first embodiment or the second embodiment, and the housing 100 houses the circuit board 150, the second wall portion 114 has an outer frame portion 117 through which an exposed component 152 attached to the circuit board 150 and exposed from the housing 100 is pierced, and the fourth wall portion 134 has an inner frame portion 137 through which the exposed component 152 is pierced.

[0040] According to the third aspect, the wall pair having the outer frame portion 117 and the inner frame portion 137 arranged thereon has weaker structural strength than other wall pairs having no frame portion formed thereon, and is more susceptible to deformation by external forces; however, since the outer engagement portion 116 and the inner engagement portion 136 are engaged with each other, it is possible to effectively maintain the snap-fit ​​state.

[0041] The fourth embodiment of the housing 100 includes any of the first to third embodiments, and at least one of the outer engagement portion 116 and the inner engagement portion 136 is arranged between the outer wall portion 111 and the inner wall portion 131 and is one of a plurality of protruding determining portions 139 that determine the positional relationship between the outer wall portion 111 and the inner wall portion 131.

[0042] According to the fourth aspect, at least one of the outer engaging portion 116 and the inner engaging portion 136 also has the function of the determining portion 139, so that the structure of the housing 100 can be simplified.

[0043] The housing 100 of the fifth embodiment includes any of the housings of the first to fourth embodiments, and the circuit board 150 has an acoustic circuit formed thereon that is related to at least one of active noise control and active sound control.

[0044] The fifth aspect is one of the embodiments of the housing 100.

[0045] The housing 100 of a sixth embodiment includes any of the housings of the first to fifth embodiments, and the material of the housing 100 includes at least one of ABS (acrylonitrile butadiene styrene), ASA (acrylate styrene acrylonitrile), SAN (styrene acrylonitrile), and PP (polypropylene).

[0046] According to the sixth aspect, it is possible to allow elastic deformation of the wall pair when forming the snap-fit ​​state.

[0047] The housing 100 of the seventh embodiment includes the housing 100 of the sixth embodiment, and the material includes a reinforcing material.

[0048] According to the seventh aspect, both elastic deformation and rigidity of the housing 100 can be achieved.

[0049] The housing 100 of the eighth embodiment includes any of the first to seventh embodiments, and the elastic modulus of the material of the housing 100 is selected from the range of 2,000 MPa or more and 2,500 MPa or less.

[0050] According to the eighth aspect, outer box member 110 and inner box member 130 can be easily fitted together to form a snap fit, and the strength of housing 100 can be ensured.

[0051] The movable body 220 of the ninth aspect comprises a housing 100 attached to the main body of the movable body 220, the housing 100 comprising an outer box member 110 having an annular outer wall portion 111 and an outer surface portion 112 covering one end face of the outer wall portion 111, and an inner box member 130 having an annular inner wall portion 131 arranged inside the outer wall portion 111 and an inner surface portion 132 covering one end face of the inner wall portion 131, the outer wall portion 111 comprising a first wall portion 113 and a second wall portion 114 arranged on a plane intersecting with the first wall portion 113 and continuous with the first wall portion 113, the inner wall portion 131 comprising a third wall portion 133 arranged opposite the first wall portion 113 and a fourth wall portion 134 arranged opposite the second wall portion 114, an outer fitting portion 115 that is attached to the third wall portion 133 and engages with the outer fitting portion 115 by snap-fitting in the fitting direction, which is the direction in which the outer box member 110 and the inner box member 130 are fitted together; an outer engaging portion 116 that is attached to the second wall portion 114; and an inner engaging portion 136 that is attached to the fourth wall portion 134 and that does not engage with the outer engaging portion when the outer box member 110 and the inner box member 130 are fitted together in the first direction, which is the direction in which the first wall portion 113 and the third wall portion 133 are aligned, but engages with the outer engaging portion in a direction in which the outer fitting portion 115 and the inner fitting portion 135 move away from each other when the outer fitting portion 115 and the inner fitting portion 135 are engaged.

[0052] According to the ninth aspect, when fitting together the outer box member 110 and the inner box member 130 of the housing 100 provided in the movable body 220, the outer engaging portion 116 and the inner engaging portion 136 are not engaged with each other, and elastic deformation of the first wall portion 113 and the third wall portion 133 to form a snap-fit ​​state can be permitted. After the snap-fit ​​state is formed, that is, in a state in which the housing 100 is formed, the outer engaging portion 116 and the inner engaging portion 136 are engaged with each other, and therefore the snap-fit ​​state can be maintained even when an external force is applied to the first wall portion 113. [Industrial Applicability]

[0053] The present disclosure can be used for housings that may be subjected to external forces, and can also be used for moving bodies such as automobiles, ships, and aircraft. [Explanation of symbols]

[0054] 100 cabinets 110 Outer box member 111 Outer wall 112 External surface part 113 First wall 114 Second wall 115 outer fitting part 116 outer engagement part 117 Outer frame 119 Mounting part 130 Inner box member 131 Inner wall 132 Inner side 133 Third wall 134 Fourth wall 135 Inner fit section 136 Inner engagement part 137 Inner frame 139 Decision Section 150 Circuit Boards 151 Printed Circuit Board 152 Exposed parts 200 bracket 220 Mobile

Claims

1. an outer box member including an annular outer wall portion and an outer surface portion covering one end surface of the outer wall portion; an inner box 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 is A first wall portion; a second wall portion disposed on a plane intersecting the first wall portion and continuous with the first wall portion, The inner wall portion is a third wall portion disposed opposite the first wall portion; a fourth wall portion disposed opposite the second wall portion, an outer fitting portion provided on the first wall portion; an inner fitting portion provided on the third wall portion and engaging with the outer fitting portion by snap-fitting in a fitting direction that is a fitting direction of the outer box member and the inner box member; an outer engagement portion provided on the second wall portion; an inner engaging portion provided on the fourth wall portion, the inner engaging portion not engaging with the outer engaging portion when the outer box member and the inner box member are fitted together in a first direction in which the first wall portion and the third wall portion are aligned, and engaging with the outer engaging portion in a direction in which the outer fitting portion and the inner fitting portion move away from each other when the outer fitting portion and the inner fitting portion are engaged with each other; A housing comprising:

2. An attachment portion for attaching the housing to an object is provided on the outside of the first wall portion. The housing of claim 1 .

3. The housing includes: A circuit board is housed therein, The second wall portion is an outer frame portion through which exposed components attached to the circuit board and exposed from the housing are pierced; The fourth wall portion is The exposed part has an inner frame portion through which it is pierced. The housing according to claim 1 or 2.

4. At least one of the outer engaging portion and the inner engaging portion is one of a plurality of protruding determining 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; The housing according to claim 1 or 2.

5. The circuit board includes: An acoustic circuit related to at least one of active noise control and active sound control is formed. The housing of claim 3 .

6. The material of the housing includes at least one of ABS (acrylonitrile butadiene styrene), ASA (acrylate styrene acrylonitrile), SAN (styrene acrylonitrile), and PP (polypropylene). The housing according to claim 1 or 2.

7. The material includes a reinforcing material. The housing of claim 6.

8. The elastic modulus of the material of the housing is: Selected from the range of 2,000 MPa or more and 2,500 MPa or less The housing according to claim 1 or 2.

9. A housing attached to a mobile body is provided, The housing includes: an outer box member including an annular outer wall portion and an outer surface portion covering one end surface of the outer wall portion; an inner box 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 is A first wall portion; a second wall portion disposed on a plane intersecting the first wall portion and continuous with the first wall portion, The inner wall portion is a third wall portion disposed opposite the first wall portion; a fourth wall portion disposed opposite the second wall portion, an outer fitting portion provided on the first wall portion; an inner fitting portion provided on the third wall portion and engaging with the outer fitting portion by snap-fitting in a fitting direction that is a fitting direction of the outer box member and the inner box member; an outer engagement portion provided on the second wall portion; an inner engaging portion provided on the fourth wall portion, the inner engaging portion not engaging with the outer engaging portion when the outer box member and the inner box member are fitted together in a first direction in which the first wall portion and the third wall portion are aligned, and engaging with the outer engaging portion in a direction in which the outer fitting portion and the inner fitting portion move away from each other when the outer fitting portion and the inner fitting portion are engaged with each other; Mobile object.

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