cabinet

Abstract

To ensure waterproofing while limiting the increase in the number of parts. [Solution] An enclosure according to one embodiment comprises a case portion, a substrate, and an elastic member. The case portion has fastening holes through which a fastening member is fastened. The cover portion has through holes through which a fastening member is inserted. The substrate has through holes with a diameter larger than the fastening holes through which a fastening member is inserted, and is housed in the space formed by the case portion and the cover portion. The elastic member is formed in a cylindrical shape through which a fastening member is inserted on its inner circumference and is inserted through the through holes in the substrate. The elastic member comprises an inner circumference portion that is sandwiched between the cover portion and the case portion and an outer circumference portion that is sandwiched between the cover portion and the substrate when the fastening member is inserted through the through holes in the cover portion, the inner circumference of the elastic member, the through holes in the substrate, and the fastening holes in the case portion and fastened.

Description

Technical Field

[0001] The disclosed embodiments relate to a housing.

Background Art

[0002] Conventionally, a housing that houses a substrate in an internal space formed by a case portion and a cover portion is known. In such a housing, a sealing material is filled in the connection portion between the case portion and the cover portion to seal the internal space and ensure waterproofness, and the case portion and the cover portion are generally fixed by screwing them together at a portion outside the sealing material. However, when screwing is performed at a portion inside the sealing material, a through-hole for a screw is formed in the case portion or the cover portion, and thus it is necessary to waterproof this through-hole. Therefore, a technique has been proposed to prevent water from entering the internal space from the through-hole by providing a rubber ring inside the through-hole for the screw (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when configured to provide a dedicated waterproof ring in the through-hole of the cover portion as in the prior art, there is a problem that the number of parts increases accordingly.

[0005] One aspect of the embodiment is made in view of the above, and an object thereof is to provide a housing that can ensure waterproofness while suppressing an increase in the number of parts.

Means for Solving the Problems

[0006] To solve the above problems and achieve the objective, a housing according to one embodiment comprises a case portion, a cover portion, a substrate, and an elastic member. The case portion has a fastening hole through which a fastening member is fastened. The cover portion has a through hole through which the fastening member is inserted. The substrate has an insertion hole that is larger in diameter than the fastening hole through which the fastening member is inserted, and is housed in the space formed by the case portion and the cover portion. The elastic member is formed in a cylindrical shape on its inner circumference through which the fastening member is inserted, and is inserted through the insertion hole in the substrate. The elastic member comprises an inner circumference portion that is sandwiched between the cover portion and the case portion when the fastening member is inserted through the through hole in the cover portion, the inner circumference of the elastic member, the insertion hole in the substrate, and the fastening hole in the case portion and fastened, and an outer circumference portion that is sandwiched between the cover portion and the substrate. [Effects of the Invention]

[0007] In one embodiment, the housing is formed in a cylindrical shape through which a fastening member is inserted on its inner circumference, and includes an elastic member that is inserted through a through-hole in the substrate. The elastic member has an inner circumference that is sandwiched between the cover and the case when the fastening member is inserted through the through-hole in the cover, the inner circumference of the elastic member, the through-hole in the substrate, and the fastening hole in the case, and is fastened, and an outer circumference that is sandwiched between the cover and the substrate. As a result, the elastic member can ensure waterproofing against the through-hole in the cover with its inner circumference, and can fix the substrate with its outer circumference. In this way, by giving waterproofing and substrate fixing functions to a single elastic member, waterproofing can be ensured while suppressing an increase in the number of parts compared to the case where separate members are provided for waterproofing and substrate fixing. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view of the housing according to the first embodiment. [Figure 2] Figure 2 is an exploded perspective view of the housing according to the first embodiment. [Figure 3] Figure 3 is a plan view of the case. [Figure 4] Figure 4 is an enlarged plan view showing the area around the mounting section of the case. [Figure 5] Figure 5 is a VV line end view of Figure 1. [Figure 6] Figure 6 is an end view of the line VI-VI in Figure 1. [Figure 7] Figure 7 is a bottom view of the cover. [Figure 8] Figure 8 is a plan view of the substrate. [Figure 9] Figure 9 is an enlarged perspective view of the elastic member. [Figure 10] Figure 10 is an enlarged plan view showing the area near the mounting portion of the case according to the second embodiment. [Figure 11] Figure 11 is an end view of the housing near the elastic member according to the second embodiment. [Figure 12] Figure 12 is an enlarged perspective view of the elastic member according to the third embodiment. [Figure 13] Figure 13 is an end view of the housing near the elastic member according to the third embodiment. [Modes for carrying out the invention]

[0009] The embodiments of the housing disclosed in this application will be described in detail below with reference to the attached drawings. However, the invention is not limited to the embodiments described below.

[0010] (First Embodiment) Figure 1 is a perspective view of the housing according to the first embodiment. Figure 2 is an exploded perspective view of the housing according to the first embodiment. In Figures 1 and 2, for the sake of explanation, a three-dimensional Cartesian coordinate system is shown, defined by mutually orthogonal X, Y, and Z axis directions. This Cartesian coordinate system may also be shown in other drawings used in the explanation below. Furthermore, the Cartesian coordinate system is the X, Y, and Z axis directions when the housing is in the illustrated state, and does not limit the mounting direction or arrangement direction of the housing. Also, Figures 1 and 2, and Figures 3 and onward described later, are all schematic diagrams.

[0011] As shown in FIGS. 1 and 2, the housing 1 includes a case portion 10, a cover portion 20, a substrate 30 (not visible in FIG. 1), a fixing member 40 (not visible in FIG. 1), and an elastic member 50 (not visible in FIG. 1). In the housing 1, the substrate 30 is accommodated in a space (internal space) formed by the case portion 10 and the cover portion 20. Note that the housing 1 is installed at an appropriate position of a vehicle not shown, for example, but is not limited thereto, and may be installed at any place according to the application.

[0012] As shown in FIG. 2, the case portion 10 is formed in a box shape with an upper opening. The case portion 10 is made of, for example, metal, but is not limited thereto. Here, the case portion 10 will be described while also referring to FIG. 3. FIG. 3 is a plan view of the case portion 10.

[0013] As shown in FIGS. 2 and 3, the case portion 10 includes mounting portions 12 and 13, a groove portion 16, and an outer fastening hole 17. Note that the mounting portion 12 is used for fixing the substrate 30, and the mounting portion 13 is used for fixing the substrate 30 and waterproofing the housing 1. Hereinafter, the mounting portion 12 may be described as the "mounting portion 12 for fixing". There are a plurality (for example, two) of the mounting portion 12 for fixing and the mounting portion 13, respectively. The mounting portion 12 for fixing and the mounting portion 13 are formed on the bottom surface 10a of the case portion 10. Specifically, the mounting portion 12 for fixing and the mounting portion 13 are formed at positions on the bottom surface 10a of the case portion 10 where the vicinity of the four corners of the substrate 30 can be supported. The mounting portion 12 for fixing is formed in a columnar shape, for example, and the substrate 30 is placed thereon.

[0014] Next, the mounting portion 13 will be described while also referring to FIGS. 4 and 5. FIG. 4 is an enlarged plan view showing the vicinity of the mounting portion 13 of the case portion 10. FIG. 5 is an end view taken along line V-V of FIG. 1. As shown in FIGS. 3 to 5 and the like, the mounting portion 13 is formed in a columnar shape, for example. A flat mounting surface 13a is formed on the upper surface of the mounting portion 13, and the substrate 30 is placed thereon (see FIG. 5).

[0015] Inside the placement portion 13, a circular concave portion 14 is formed inside the placement surface 13a in a plan view. Further, inside the concave portion 14, that is, at the center of the placement portion 13, a fastening hole 15 is formed. In other words, the concave portion 14 is formed around the fastening hole 15 in a plan view. The fastening hole 15 is a screw hole into which a fastening member 70 (see FIGS. 1, 2, and 5) can be fastened. Note that, as the fastening member 70, for example, a metal screw can be used.

[0016] Next, the groove portion 16 will be described with reference to FIG. 6 as well. FIG. 6 is an end view taken along line VI-VI of FIG. 1. As shown in FIGS. 3 and 6, etc., the groove portion 16 is formed along the outer periphery of the case portion 10. The groove portion 16 is formed in a groove shape that can be fitted with a protrusion portion 24 of a cover portion 20 described later (see FIG. 6).

[0017] Next, the outer fastening hole 17 will be described with reference to FIGS. 2 and 3. The outer fastening hole 17 is a screw hole into which a fastening member 60 (see FIGS. 1 and 2) can be fastened. The outer fastening hole 17 is formed at a position outside the groove portion 16. There are a plurality (for example, two) of the outer fastening holes 17, but the number of the outer fastening holes 17 is not limited to this. Note that, as the fastening member 60, for example, a metal screw can be used.

[0018] Next, the cover portion 20 will be described with reference to FIG. 7 as well. FIG. 7 is a bottom view of the cover portion 20. As shown in FIGS. 2 and 7, etc., the cover portion 20 is in a flat plate shape and is formed in a rectangular shape. The cover portion 20 is, for example, made of metal, but is not limited to this.

[0019] The cover portion 20 includes a pressing portion 22, a through hole 23, a protrusion portion 24, an outer through hole 25, and a guide portion 26. The pressing portion 22 is formed at a position corresponding to the fixing placement portion 12 of the case portion 10 on the lower surface 20a of the cover portion 20. In other words, the pressing portion 22 is formed at a position facing the fixing placement portion 12 of the case portion 10 in a state where the cover portion 20 and the case portion 10 are combined.

[0020] The through-hole 23 is formed on the lower surface 20a of the cover portion 20 at a position corresponding to the fastening hole 15 of the case portion 10. In other words, the through-hole 23 is formed at a position facing the fastening hole 15 of the case portion 10 when the cover portion 20 and the case portion 10 are assembled together (see Figure 5). The through-hole 23 is a hole through which the fastening member 70 can be inserted.

[0021] The projection 24 is formed along the outer circumference of the lower surface 20a of the cover portion 20. As described above, the projection 24 is formed in a protruding shape that can be fitted into the groove portion 16 (see Figure 6). Furthermore, when the cover portion 20 and the case portion 10 are assembled, the space between the fitted projection 24 and the groove portion 16 is filled with sealing material A. As a result, the space (internal space) formed by the cover portion 20 and the case portion 10 is sealed and waterproof.

[0022] The outer through-hole 25 is formed at a position corresponding to the outer fastening hole 17 of the case portion 10. In other words, the outer through-hole 25 is formed at a position facing the outer fastening hole 17 of the case portion 10 when the cover portion 20 and the case portion 10 are assembled together. The outer through-hole 25 is a hole through which the fastening member 60 (see Figures 1 and 2) can be inserted. Therefore, in the housing 1, the cover portion 20 and the case portion 10 are fastened together by fastening the fastening member 60 through the outer through-hole 25 of the cover portion 20 and the outer fastening hole 17 of the case portion 10. The cover portion 20 and the case portion 10 are also fastened together by a fastening member 70, which will be described later.

[0023] The guide portion 26 is formed around the through hole 23 on the lower surface 20a of the cover portion 20. More specifically, the guide portion 26 is formed to fill the gap between the through hole 23 and the hole 51 of the elastic member 50, which will be described later, when the cover portion 20 and the case portion 10 are assembled. This prevents the elastic member 50 from shifting and makes it less likely for a gap to form between the cover portion 20 and the elastic member 50, so that the space (internal space) formed by the cover portion 20 and the case portion 10 is more reliably sealed and waterproof. Note that the guide portion 26 is formed as appropriate when there is a gap between the fastening member 70 and the hole 51, and may not be formed when there is almost no gap.

[0024] Next, the substrate 30 will be described with reference to Figure 8. Figure 8 is a plan view of the substrate 30. As shown in Figures 2 and 8, the substrate 30 is formed, for example, in the shape of a flat plate, and various electronic devices (not shown) are mounted on the substrate 30.

[0025] The substrate 30 is provided with an insertion hole 31. The insertion hole 31 is formed in a position corresponding to the through hole 23 of the cover portion 20 and the fastening hole 15 of the case portion 10. In other words, when the cover portion 20 and the case portion 10 are assembled, the insertion hole 31 is formed to be located between the through hole 23 of the cover portion 20 and the fastening hole 15 of the case portion 10. The insertion hole 31 is set to have a larger diameter than the fastening hole 15, and is a hole through which the fastening member 70 can be inserted (see Figure 5). That is, the diameter D1 of the insertion hole 31 of the substrate 30 is set to be larger than the diameter D2 of the fastening hole 15 of the case portion 10 (D1>D2). Also, the insertion hole 31 is set to have a larger diameter than the through hole 23 of the cover portion 20. That is, the diameter D1 of the insertion hole 31 of the substrate 30 is set to be larger than the diameter D3 of the through hole 23 of the cover portion 20 (D1>D3).

[0026] Next, the fixing member 40 will be described. As shown in Figure 2, the fixing member 40 is formed in a columnar shape. The fixing member 40 is made from an elastic material such as rubber. Although not shown in the illustration, the fixing member 40 is interposed between the pressing portion 22 of the cover portion 20 and the substrate 30 when the cover portion 20 and the case portion 10 are assembled. More specifically, in the housing 1, when the cover portion 20 and the case portion 10 are assembled, the pressing portion 22 of the cover portion 20, the fixing member 40, the substrate 30, and the fixing mounting portion 12 of the case portion 10 are stacked in that order. When the fastening members 60 and 70 are fastened, the pressing portion 22 presses against the fixing member 40, and as a result the substrate 30 is sandwiched and fixed between the pressed fixing member 40 and the fixing mounting portion 12.

[0027] Next, the elastic member 50 will be described. The elastic member 50 according to this embodiment is configured to have the functions of waterproofing and fixing the substrate. The elastic member 50 will be described in detail below with reference to Figure 9. Figure 9 is an enlarged perspective view of the elastic member 50. As shown in Figure 9, the elastic member 50 is formed in a cylindrical shape, more specifically, in a cylindrical shape. The elastic member 50 is made from a material having elastic force, such as rubber.

[0028] A hole 51 is formed in the center of the elastic member 50. The hole 51 is a through-hole that runs vertically (in the Z-axis direction). The hole 51 is set to have a larger diameter than the fastening hole 15, and is a hole through which the fastening member 70 can be inserted (see Figure 5). That is, the diameter D4 of the hole 51 in the elastic member 50 is set to be larger than the diameter D2 of the fastening hole 15 in the case portion 10 (D4>D2). Also, the hole 51 is set to have a larger diameter than the through-hole 23 in the cover portion 20. That is, the diameter D4 of the hole 51 in the elastic member 50 is set to be larger than the diameter D3 of the through-hole 23 in the cover portion 20 (D4>D3). In this way, the elastic member 50 is formed in a cylindrical shape through which the fastening member 70 is inserted on the inner circumference.

[0029] The elastic member 50 comprises an inner circumference portion 52 and an outer circumference portion 53. The inner circumference portion 52 is the part of the elastic member 50 located on the inner circumference side and extends in the vertical direction (Z-axis direction). The outer circumference portion 53 is the part of the elastic member 50 located on the outer circumference side and extends in the vertical direction (Z-axis direction). As shown in Figure 5, the length (height) L1 of the inner circumference portion 52 is set to be longer than the length (height) L2 of the outer circumference portion 53 (L1 > L2). In this way, because the lengths of the inner circumference portion 52 and the outer circumference portion 53 are different, a step is formed in the elastic member 50.

[0030] As shown in Figure 5, the elastic member 50 is positioned between the cover portion 20 and the case portion 10 when the cover portion 20 and the case portion 10 are assembled. More specifically, the elastic member 50 is positioned between the cover portion 20 and the case portion 10 with the stepped portion locked in place by being inserted through the insertion hole 31 of the substrate 30. The fastening member 70 is then inserted through the through hole 23 of the cover portion 20, the inner circumference side (i.e., hole 51) of the elastic member 50, the insertion hole 31 of the substrate 30, and the fastening hole 15 of the case portion 10, thereby fastening the cover portion 20, the elastic member 50, the substrate 30, and the case portion 10 together.

[0031] When the fastening member 70 is fastened, the inner circumference 52 is sandwiched between the cover portion 20 and the case portion 10. That is, the inner circumference 52 is compressed by the cover portion 20 and the case portion 10 (see arrow B1). Also, when the fastening member 70 is fastened, the outer circumference 53 is sandwiched between the cover portion 20 and the substrate 30. That is, the outer circumference 53 is compressed by the cover portion 20 and the substrate 30 (see arrow B2).

[0032] In this way, the inner circumference 52 of the elastic member 50 is sandwiched between the cover portion 20 and the case portion 10 and is in close contact with the cover portion 20 and the case portion 10, thereby ensuring waterproofing of the through hole 23 of the cover portion 20. Furthermore, the outer circumference 53 of the elastic member 50 is sandwiched between the cover portion 20 and the substrate 30 and is in close contact with the cover portion 20 and the substrate 30, thereby fixing the substrate 30 in place.

[0033] Furthermore, since the cover portion 20 and the case portion 10 are connected via the fastening member 70, heat can be transferred between the cover portion 20 and the case portion 10 (see arrow C). This allows heat from the cover portion 20 to be released to the case portion 10 via the fastening member 70, or vice versa, thereby improving the heat dissipation of the housing 1.

[0034] Furthermore, the substrate 30 is positioned such that the surface 30b opposite to the surface 30a that contacts the outer peripheral portion 53 of the elastic member 50 contacts the case portion 10. A conductive member 32 is interposed at the contact point between the substrate 30 and the case portion 10. The conductive member 32 is provided on the substrate 30. The conductive member 32 can be made of copper foil or the like, but is not limited to this. In this way, the substrate 30 and the case portion 10 are connected via the conductive member 32, allowing the substrate 30 to be grounded.

[0035] As described above, the housing 1 according to the first embodiment comprises a case portion 10, a substrate 30, and an elastic member 50. The case portion 10 has fastening holes 15 through which the fastening member 70 is fastened. The cover portion 20 has through holes 23 through which the fastening member 70 is inserted. The substrate 30 has through holes 31 that are larger in diameter than the fastening holes 15 through which the fastening member 70 is inserted, and is housed in the space formed by the case portion 10 and the cover portion 20. The elastic member 50 is formed in a cylindrical shape on its inner circumference through which the fastening member 70 is inserted, and is also inserted through the through holes 31 of the substrate 30. The elastic member 50 comprises an inner circumferential portion 52 that is sandwiched between the cover portion 20 and the case portion 10, and an outer circumferential portion 53 that is sandwiched between the cover portion 20 and the case portion 10, when the fastening member 70 is inserted through the through hole 23 of the cover portion 20, the inner circumferential side (hole 51) of the elastic member 50, the insertion hole 31 of the substrate 30, and the fastening hole 15 of the case portion 10 and fastened.

[0036] As a result, the elastic member 50 can ensure waterproofing against the through-hole 23 of the cover portion 20 at its inner circumference 52, and can fix the substrate 30 at its outer circumference 53. In this way, by providing waterproofing and substrate fixing functions in a single elastic member 50, waterproofing can be ensured while suppressing an increase in the number of parts compared to the case where separate members are provided for waterproofing and substrate fixing.

[0037] In this embodiment, two cases are described for fastening the case portion 10 and the cover portion 20: one in which an outer fastening hole 17 is provided in the case portion 10 and an outer through hole 25 is provided in the cover portion 20; and another in which a fastening hole 15 is provided in the case portion 10 and a through hole 23 is provided in the cover portion 20. However, the configuration in which an outer fastening hole 17 and an outer through hole 25 are provided may be replaced with a configuration in which a fastening hole 15 and a through hole 23 are provided. In other words, the outer fastening hole 17 in the case portion 10 and the outer through hole 25 in the cover portion 20 may be eliminated, and a fastening hole 15 may be provided inside the groove of the case portion 10 and a through hole 23 inside the projection 24 of the cover portion 20, and the fastening may be performed with a fastening member 70. In that case, the internal space between the case portion 10 and the cover portion 20 is sealed by the elastic member 50 being inserted into the fastening member 70.

[0038] (Second Embodiment) Next, the configuration of the housing 1 according to the second embodiment will be described with reference to Figures 10 and 11. Figure 10 is an enlarged plan view showing the vicinity of the mounting portion 13 of the case portion 10 according to the second embodiment. Figure 11 is an end view of the vicinity of the elastic member 50 of the housing 1 according to the second embodiment, and is an end view similar to that of Figure 5. In the following, components common to the first embodiment will be denoted by the same reference numerals and their description will be omitted.

[0039] As shown in Figures 10 and 11, in the second embodiment, the case portion 10 is provided with a protruding portion 18. The protruding portion 18 is formed in the recess 14. More specifically, the protruding portion 18 is formed in the recess 14 along the outer circumference of the fastening hole 15. In other words, the protruding portion 18 is formed in an annular shape so as to surround the outer circumference of the fastening hole 15 in a plan view. As shown in Figure 11, the protruding portion 18 is formed to protrude toward the cover portion 20. The protruding portion 18 is formed in a triangular shape in a cross-sectional view, but is not limited to this, and may be rectangular, trapezoidal, or other shapes.

[0040] As shown in Figure 11, the inner circumference 52 of the elastic member 50 contacts the case portion 10 at a position within the recess 14 and outside the protrusion 18 when the fastening member 70 is fastened.

[0041] As a result, in the second embodiment, the protrusion 18 can function as a stopper that restricts the movement of the inner circumference 52 of the elastic member 50 toward the fastening hole 15. That is, by providing a protrusion 18 formed along the outer circumference of the fastening hole 15 in the recess 14, if, for example, the inner circumference 52 of the elastic member 50 deforms and tries to penetrate toward the fastening hole 15, the inner circumference 52 will come into contact with the protrusion 18, restricting its movement and preventing it from penetrating. Furthermore, if the protrusion 18 is formed in a triangular shape in cross-section as shown in Figure 11, the protrusion 18 facilitates the insertion of the fastening member 70 into the fastening hole 15. That is, since the protrusion 18 has an inclination toward the fastening hole 15, when inserting the fastening member 70 into the fastening hole 15, it guides the fastening member 70 into the fastening hole 15 if the fastening member 70 shifts laterally. This makes it easier for the fastening member 70 to enter the fastening hole 15, thus facilitating fastening.

[0042] Furthermore, as shown in Figure 11, the inner circumference 52 of the elastic member 50 deforms when the fastening member 70 is fastened, and is configured to come into contact with the side wall 18a of the protrusion 18 on the recess 14 side and the side wall 14a of the recess 14. That is, the inner circumference 52 is compressed near the protrusion 18 so as to be in close contact with the side wall 18a of the protrusion 18 on the recess 14 side and the side wall 14a of the recess 14 (see arrow B3).

[0043] In this way, the inner circumference 52 of the elastic member 50 is in contact with and tightly adheres to the side wall 18a of the protruding portion 18 on the recessed portion 14 side and the side wall 14a of the recessed portion 14, thereby further ensuring waterproofness to the through hole 23 of the cover portion 20.

[0044] (Third embodiment) Next, the configuration of the housing 1 according to the third embodiment will be described with reference to Figures 12 and 13. Figure 12 is an enlarged perspective view of the elastic member 50 according to the third embodiment. Figure 13 is an end view of the housing 1 according to the third embodiment near the elastic member 50, and is an end view similar to that of Figure 5.

[0045] As shown in Figures 12 and 13, in the third embodiment, the elastic member 50 is provided with a locking portion 54. The locking portion 54 is the part that locks with the substrate 30, and more specifically, it is the part that locks with the insertion hole 31 of the substrate 30. Specifically, the locking portion 54 is formed at the lower end of the inner circumference 52 of the elastic member 50 and is formed to protrude outward from the inner circumference 52. The locking portion 54 is formed in a trapezoidal shape in cross-section, but is not limited to this, and may be rectangular, triangular, or other shapes.

[0046] As shown in Figure 13, the elastic member 50 configured as described above is attached to the substrate 30 by the locking portion 54 being locked into the insertion hole 31 of the substrate 30. More specifically, the elastic member 50 inserted into the insertion hole 31 of the substrate 30 is attached to the substrate 30 by sandwiching the substrate 30 between the locking portion 54 and the lower surface 53a of the outer peripheral portion 53.

[0047] Thus, in the third embodiment, since the elastic member 50 is equipped with a locking portion 54, the elastic member 50 can be positioned and attached simply by inserting the elastic member 50 into the insertion hole 31 of the substrate 30. This makes the attachment work of the elastic member 50 easier, and as a result, the ease of assembly of the housing 1 can be improved.

[0048] In the embodiments described above, examples were shown in which the inner circumference 52 and outer circumference 53 of the elastic member 50 are formed integrally, but the invention is not limited to this. That is, the inner circumference 52 and outer circumference 53 may be formed separately, and the elastic member 50 may be formed by combining the separate inner circumference 52 and outer circumference 53.

[0049] Further effects and modifications can be readily derived by those skilled in the art. Therefore, broader aspects of the present invention are not limited to the specific details and representative embodiments expressed and described above. Accordingly, various modifications are possible without departing from the spirit or scope of the overall concept of the invention as defined by the appended claims and their equivalents. [Explanation of Symbols]

[0050] 1 cabinet 10 Case section 14 recess 15 fastening holes 18 Protrusion 20 Cover section 23 Through hole 30 circuit boards 31 Through hole 32 Conductive members 50 Elastic members 52 Inner circumference 53 Outer perimeter 54 Locking part 60, 70 Fastening members

Claims

1. A case portion having fastening holes into which fastening members are fastened, A cover portion having a through hole through which the fastening member is inserted, A substrate having an insertion hole larger in diameter than the fastening hole through which the fastening member is inserted, and which is housed in the space formed by the case portion and the cover portion, The fastening member is formed in a cylindrical shape on the inner circumference and is inserted into the insertion hole of the substrate and Equipped with, The elastic member comprises an inner circumferential portion that is sandwiched between the cover portion and the case portion and an outer circumferential portion that is sandwiched between the cover portion and the case portion when the fastening member is inserted through the through hole of the cover portion, the inner circumferential side of the elastic member, the insertion hole of the substrate, and the fastening hole of the case portion and fastened together. Cabinet.

2. The case portion is A recess formed around the fastening hole, In the recess, a protrusion is formed along the outer circumference of the fastening hole and protrudes toward the cover portion. Equipped with, The inner circumference of the elastic member contacts the case portion at a position within the recess and outside the protruding portion when the fastening member is fastened. The housing according to claim 1.

3. The inner circumference of the elastic member contacts the side wall of the recess on the protruding portion and the side wall of the recess when the fastening member is fastened. The housing according to claim 2.

4. The substrate is arranged such that the surface opposite to the surface that contacts the outer peripheral portion of the elastic member contacts the case portion. A conductive member is interposed at the point where the substrate and the case portion come into contact. The housing according to claim 1.

5. The elastic member has a locking portion that engages with the insertion hole of the substrate. The housing according to claim 1.

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