Housing, substrate holding method, and substrate holding structure

Abstract

To provide a housing for holding a substrate capable of holding the substrate with high accuracy for a long period of time, and a substrate holding method more easily and inexpensively than before.SOLUTION: The housing includes a main body and a cover fixed to the main body. The main body includes a bottom surface portion, an outer wall portion and an inner wall portion provided at a peripheral edge of the bottom surface portion, and a substrate support portion and a plurality of reference protrusions provided inside the inner wall portion. The cover includes a lid portion that closes an upper surface of the main body, a side wall portion, a plurality of sliding protrusions, and a plurality of auxiliary support portions. The sliding protrusion of the cover is fixed at a position in contact with the reference protrusion when the cover is positioned to close the body. The sliding protrusion has an inclined surface that slides along an end portion of the reference protrusion. In the housing, the tip of the sliding protrusion pressurizes the other surface of the substrate with respect to the substrate of which one surface is supported by the substrate support portion. The present invention also provides a substrate holding method.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a housing for accommodating and holding a substrate therein, a substrate holding method, and a substrate holding structure. [Background technology]

[0002] Enclosures for holding electronic devices such as circuit boards and for incorporating them into vehicles and industrial equipment are known. A typical enclosure for holding circuit boards has a box-shaped main body with an opening and a cover attached to the opening. Enclosures for holding circuit boards are required to securely hold the circuit boards and prevent abnormal noise from the enclosure or circuit boards even when subjected to vibrations or shocks from the incorporated device.

[0003] Patent Document 1 discloses an electronic device storage case that prevents abnormal noise caused by the board when the board vibrates inside the device. The electronic device storage case in Patent Document 1 has a hollow box-shaped case body with an open top. The case body has inclined ribs formed on each side wall that incline inward from the opening side toward the base side. The board is introduced through the opening of the case body, and the edge of the board slides over the inclined portions of the inclined ribs and is pressed against the inclined portions, thereby being fixed in place.

[0004] The electronic device storage case described in Patent Document 1 has inclined ribs arranged on each side wall. Therefore, when holding a board in the case, it is necessary to accurately position the board with respect to each side wall of the case. If the board is introduced without accurate positioning, there is a risk that the board will be fixed in the case in an inclined state, which may cause the board to become misaligned or generate abnormal noise over a long period of time. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-9748 Summary of the Invention [Problem to be solved by the invention]

[0006] Substrate holding enclosures for incorporating substrates into devices are required to hold the substrates securely for a long period of time. However, conventional enclosures require additional equipment or processes to accurately position the substrates, or additional fixing means within the enclosure.

[0007] The present invention has been made in consideration of the above-mentioned problems, and the problem to be solved is to provide a substrate holding housing and a substrate holding method that can hold a substrate with high precision for a long period of time more easily and at a lower cost than conventional methods. [Means for solving the problem]

[0008] The present invention relates to a housing for holding a substrate. The housing of the present invention includes a main body and a cover fixed to the main body. The main body has a bottom portion, outer and inner wall portions provided around the periphery of the bottom portion, and a substrate support portion and multiple reference protrusions provided inside the inner wall portion. The cover has a lid portion that closes the top surface of the main body, side wall portions, multiple sliding protrusions, and multiple auxiliary support portions. The sliding protrusions of the cover are fixed in positions that contact the reference protrusions when the cover is aligned to close the main body. The sliding protrusions have inclined surfaces that slide along the ends of the reference protrusions. The housing of the present invention is characterized in that when a substrate is supported on one side by the substrate support portion, the tip of the sliding protrusion presses the other side of the substrate.

[0009] It is preferable that the reference protrusion of the housing of the present invention is substantially prismatic and has fillets formed on two opposing sides of the tip, while it is preferable that the sliding protrusions of the housing are formed in pairs, and that when the inclined surfaces of each sliding protrusion come into contact with the fillets of the reference protrusion, the two sliding protrusions elastically deform.

[0010] The housing of the present invention preferably includes three or more reference protrusions, each of which is preferably fixed at a position where it fits into one of three or more notches provided in the substrate.

[0011] In the housing of the present invention, the reference projection preferably has a crush rib on the side surface.

[0012] The housing of the present invention is preferably provided with a snap fit for fixing the cover to the main body.

[0013] The present invention also provides a substrate holding method. The substrate holding method of the present invention is a method for holding a substrate having a notch using a housing including a main body and a cover fixed to the main body. The main body of the housing used in the substrate holding method of the present invention has a bottom surface, outer and inner wall portions provided around the periphery of the bottom surface, and a substrate support portion and multiple reference protrusions provided inside the inner wall portion. The cover of the housing has a lid portion that closes the top surface of the main body, side wall portions, multiple sliding protrusions, and multiple auxiliary support portions. The sliding protrusions are fixed in positions that contact the reference protrusions when the cover is fixed to the main body. The substrate holding method of the present invention includes an alignment step of aligning the position of the notch in the substrate with the position of the reference protrusion; a substrate placement step of moving the substrate along the reference protrusion and placing it on the substrate support portion; a cover insertion step of inserting the side wall portion of the cover between the outer wall portion and the inner wall portion of the main body; an elastic deformation step of elastically deforming the sliding protrusion in contact with the tip of the reference protrusion; a pressure step of applying pressure to the substrate with the tip of the sliding protrusion; and a fixing step of fixing the cover to the main body.

[0014] The present invention also provides a substrate holding structure. The substrate holding structure of the present invention includes a substrate and a housing. The housing of the substrate holding structure of the present invention includes a main body and a cover fixed to the main body. The main body has a bottom surface, outer and inner wall portions provided around the periphery of the bottom surface, and a substrate support portion and multiple reference protrusions provided inside the inner wall portion. The cover of the substrate holding structure has a lid portion that closes the top surface of the main body, side wall portions, multiple sliding protrusions, and multiple auxiliary support portions. The sliding protrusions of the cover are fixed in a position that contacts the reference protrusions when the cover is fixed to the main body, and have inclined surfaces that slide along the ends of the reference protrusions. The substrate has multiple notches that fit into the reference protrusions. In the substrate holding structure of the present invention, the reference protrusions fit into the notches in the substrate, one side of the substrate is supported by the substrate support portion, the side wall portions of the cover are inserted between the outer and inner wall portions of the main body, and the tips of the sliding protrusions press against the top surface of the substrate. [Effects of the Invention]

[0015] The housing of the present invention can reliably hold a substrate by having the tip of a sliding protrusion on the cover press against the other side of the substrate, one side of which is supported by a substrate support portion provided on the main body.

[0016] The housing of the present invention can suppress the generation of vibrations and abnormal noise of the board by simply adding a reference protrusion and a sliding protrusion to the normal structure for supporting the board. The present invention makes it possible to provide a housing for holding a board at low cost. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a perspective view of a housing that houses a substrate. [Figure 2] FIG. 2 is a plan view of the main body. [Figure 3] FIG. 3 is a partial cross-sectional view of the main body and the cover. [Figure 4] FIG. 4 is a partial enlarged view of the sliding protrusion and auxiliary support portion of the cover. [Figure 5] FIG. 5 is a vertical cross-sectional view of the main body on which the substrate is mounted and the cover. [Figure 6] FIG. 6 is a partial enlarged view of the sliding protrusion that contacts the reference protrusion. [Figure 7] FIG. 7(a) is a vertical cross-sectional view of the housing with the cover and board fixed to the main body, and FIG. 7(b) is a partially enlarged view of the housing with the cover and board fixed to the main body. [Figure 8] FIG. 8 is a plan view of a substrate held by the housing of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] As a preferred embodiment of the housing of the present invention, a rectangular housing having multiple notches for holding a substrate and a method for holding a substrate using this housing will be described below. Note that the following embodiment is merely an example of one aspect of the invention and is not intended to limit the scope of the claims.

[0019] In the following description, descriptions of relative positions and directions such as "up and down," "left and right," and "vertical and horizontal" correspond to the positions and directions on the drawings used in the description.

[0020] [Case]

[0021] Fig. 1 shows a perspective view of the housing of this embodiment, holding a substrate X. The housing 1 comprises a main body 11 and a cover 21 that covers the main body 11. Fig. 1 shows a portion of the cover 21 broken away, showing the internal structure of the main body 11 and a portion of the housed substrate X.

[0022] Preferably, the housing 1 is made of resin. More preferably, the entire body 11 is integrally molded from the same resin, and the cover 21 is integrally molded from a resin that is more flexible than the body 11.

[0023] The configuration of the main body 11 will be described. Fig. 2 shows a top view of the main body 11 of this embodiment. In this embodiment, the main body 11 has a rectangular bottom surface 12, and an outer wall surface 13 and an inner wall surface 14 provided on the periphery of the bottom surface 12. By having the bottom surface 12, the outer wall surface 13, and the inner wall surface 14, the outer shape of the main body 11 is a box shape that is open at the top. The main body 11 has a substrate support portion 15 and a reference protrusion 16 further inside the inner wall surface 14.

[0024] The outer wall portion 13 is made up of two pairs of opposing rectangular plate members and extends perpendicular to the bottom surface portion 12. Like the outer wall portion 13, the inner wall portion 14 is also made up of two pairs of opposing rectangular plate members and extends perpendicular to the bottom surface portion 12. A groove 18 of a fixed width is formed between the outer wall portion 13 and the inner wall portion 14. The side wall of the cover 21 can be inserted into the groove 18.

[0025] A substrate support portion 15 is provided on the bottom surface portion 12 of the main body 11. The substrate support portion 15 is arranged along the inside of the inner wall portion 14. The upper surface of the substrate support portion 15 is parallel to the bottom surface portion 12 and has a constant height. When a flat substrate X is inserted, the upper surface of the substrate support portion 15 supports the peripheral edge of the lower surface of the substrate.

[0026] A plurality of reference protrusions 16 are provided on the bottom surface 12 further inside the substrate support portion 15. The reference protrusions 16 are generally prismatic protrusions consisting of a bottom surface, four side surfaces, and a top surface. The arrangement of the reference protrusions 16 corresponds to the arrangement of the notches X1 provided in the substrate X to be accommodated. The number of reference protrusions 16 provided is equal to or less than the number of notches X1 provided in the substrate X to be accommodated, and FIG. 2 shows an example in which there are four corresponding notches X1, and reference protrusions 16 are provided corresponding to all of them. Regardless of this embodiment, it is preferable to provide at least three reference protrusions 16.

[0027] The lower part of one side surface of the reference protrusion 16 is integrated with the substrate support portion. A crush rib 16a is provided on each of the upper parts of two side surfaces 17 that are arranged perpendicular to the inner wall portion 14 of the reference protrusion 16. When the crush rib 16a comes into contact with part of the notch of the inserted substrate X, a portion of the crush rib 16a deforms, pressing the substrate toward the inside of the main body 11 and fixing it in place.

[0028] A fillet 17a is provided at the tip of each of the two side surfaces 17 of the reference projection 16. That is, a fillet 17a is formed on each of two opposing sides of the tip of the reference projection 16.

[0029] A plurality of claw-shaped protrusions 19 are formed on the outer surface of the outer wall portion 13 of the main body 11. The claw-shaped protrusions 19 are members for connecting the cover 21 to the main body 11 by snap-fitting.

[0030] The structure of the cover 21 will now be described. Fig. 3 shows a partial cross-sectional view of the main body 11 and the cover 21. The cover 21 comprises a lid portion 22 for the main body 11 and a side wall portion 23. The lid portion 22 has a plurality of sliding protrusions 24 and a plurality of auxiliary support portions 25. An engagement portion 26 that is snap-fitted to the main body 11 is provided on the edge of the lid portion 22.

[0031] In this embodiment, the lid portion 22 of the cover 21 is rectangular in shape. The lid portion 22 is formed to a size that covers the outer wall portion 13 of the main body 11 and the entire inside thereof.

[0032] The side walls 23 of the cover 21 are made up of two pairs of opposing rectangular plates, and extend perpendicular to the lid 22. The side walls 23 are spaced apart so that they can be inserted into the groove 18 between the outer wall 13 and inner wall 14 of the main body 11.

[0033] The sliding protrusions 24 and auxiliary support portions 25 of the lid portion 22 will now be described. FIG. 4 shows a partial enlarged view of the sliding protrusions 24 and auxiliary support portions 25 of the cover 21. The sliding protrusions 24 are curved, plate-shaped members. The sliding protrusions 24 are arranged in pairs on the lid portion 22 and protrude downward from the lid portion 22. The sliding protrusions 24 are arranged in positions where their respective tips contact the two fillets 17a at the tips of the reference protrusions 16 when the cover 21 is fixed to the main body 11. In other words, when the groove 18 of the main body 11 and the side wall portion 23 of the cover 21 are aligned, the reference protrusions 16 and the sliding protrusions 24 are aligned on the horizontal plane with the reference protrusion 16 sandwiched between the sliding protrusions 24.

[0034] A fillet 24a is formed at the tip of the sliding protrusion 24. The sliding protrusion 24 also has an inclined surface 24b that slides along the fillet 17a of the reference protrusion 16. The length of the sliding protrusion 24 is longer than the distance between the lid portion 22 and the substrate support portion 15 when the cover 21 is fixed to the main body 11. As a result, when the cover 21 is fixed to the main body 11, the sliding protrusion 24 comes into contact with the substrate X, one surface of which is supported by the substrate support portion, and elastically deforms, so that the tip of the sliding protrusion 24 can apply pressure to the other surface of the substrate X.

[0035] The auxiliary support 25 is a rectangular parallelepiped member located at a position away from the sliding protrusion 24. In the most preferred embodiment, the height of the auxiliary support 25 is slightly shorter than the distance between the substrate X and the lid portion 22 when the cover 21 is fixed to the main body 11 holding the substrate. The auxiliary support 25 does not normally contact the top surface of the substrate X, even when the housing 1 is holding the substrate X. When subjected to vibrations or impacts up to a certain level, the sliding protrusion 24 presses down on the substrate X and supports the top surface of the substrate X. When the housing 1 is subjected to large vibrations or impacts that may cause plastic deformation or damage to the sliding protrusion 24, the auxiliary support 25 supports the other side of the substrate X, preventing malfunction of the substrate X. Alternatively, the height of the auxiliary support 25 can be set to the same as the distance between the substrate X and the lid portion 22 when the cover 21 is fixed to the main body 11 holding the substrate X. This allows the sliding protrusion 24 and the auxiliary support 25 to always cooperate to support the substrate X.

[0036] The housing 1 of this embodiment is provided with a plurality of fastening means for snap-fit ​​connection as a suitable fastening means for fastening the cover 21 to the main body 11. An engagement portion 26 is provided on the edge of the lid portion 22 as a fastening means for snap-fit ​​connection with the main body 11. The engagement portion 26 has through holes. The cover 21 is fixed to the main body 11 by engaging the plurality of claw-shaped protrusions 19 on the outer wall portion 13 of the main body 11 with the through holes of the engagement portion 26.

[0037] The through holes of the engagement portions 26 can be formed larger than the claw-shaped protrusions 19 so that a gap exists between the claw-shaped protrusions 19 to the extent that the snap-fit ​​connection is not released. The existence of a space between the claw-shaped protrusions 19 and the through holes makes the work of fixing the lid portion 22 to the main body 11 more efficient and quick. The existence of a gap between the through holes and the claw-shaped protrusions 19 means that the cover 21 may not be completely fixed to the main body 11 and may move. However, in the housing 1 of this embodiment, the configuration of the board support portions 15, the reference protrusions 16, and the sliding protrusions 24 allows the degree of freedom of the housed board in all directions to be restricted, and the board is suitably fixed and held within the housing 1.

[0038] [Board holding method using a chassis]

[0039] The process of holding a substrate using the housing 1 will be described with reference to the drawings. As an example, the following describes a method of inserting the substrate X and the cover 21 in order from above the main body 11 while maintaining the bottom surface 12 of the main body 11 in a substantially horizontal position with the bottom surface 12 facing downwards.

[0040] 8 shows a plan view of the substrate X held by the housing 1 in this embodiment. The substrate X has four rectangular cutouts X1, and the substrate support portion 15 of the housing 1 is provided with four reference protrusions 16 whose shapes and arrangement match those of the cutouts X1 of the substrate X.

[0041] The substrate holding method of this embodiment includes a positioning step, a substrate placement step, a cover insertion step, an elastic deformation step, a pressure application step, and a fixing step.

[0042] In the alignment step, the substrate X is introduced from above the main body 11, and the position of the notch X1 of the substrate X is aligned with the position of the reference protrusion 16.

[0043] In the substrate mounting step, the reference protrusion 16 is press-fitted into the notch X1 of the substrate X, and the substrate X is moved downward to mount the substrate X on the upper surface of the substrate support part 15. During the press-fitting, the end of the notch X1 of the substrate X comes into contact with the crush rib 16a of the reference protrusion 16, and the substrate X moves while crushing a portion of the crush rib 16a. To prevent stress from being generated inside the substrate X due to the press-fitting, it is desirable to pressurize the vicinity of the notch X1 of the substrate X during the substrate mounting step. FIG. 5 shows a vertical cross-sectional view of the main body 11 and cover 21 with the substrate X mounted thereon at the end of the substrate mounting step.

[0044] When the substrate placing step is completed, horizontal and rotational movement of the substrate X is restricted by the crush ribs 16a of the multiple reference protrusions 16. Furthermore, the peripheral edge of the substrate X is supported by the substrate support parts 15, so that downward movement of the substrate X is restricted.

[0045] In the cover insertion process, the side wall portion 23 of the cover 21 is inserted between the outer wall portion 13 and the inner wall portion 14 of the main body 11, and the entire cover 21 descends toward the bottom surface portion 12 of the main body 11. During the cover insertion process, the fillets 24a at the tip of each sliding protrusion 24 come into contact with the two fillets 17a of the reference protrusion 16. As the cover insertion process progresses, the sliding protrusions 24 in contact with the fillets 17a of the reference protrusion 16 elastically deform, and the inclined surfaces 24b of the sliding protrusions 24 come into contact with the fillets 17a of the reference protrusion 16. Figure 6 schematically shows the state in which the inclined surfaces 24b of the sliding protrusions 24 are in contact with the fillets 17a of the reference protrusion 16.

[0046] As the cover insertion step progresses further and the cover 21 descends, the fillet 24a at the tip of the sliding protrusion 24 comes into contact with the substrate X. The tip of the sliding protrusion 24 moves along the upper surface of the substrate X, and the sliding protrusion 24 further elastically deforms, moving away from the reference protrusion 16 and applying pressure to the upper surface of the substrate X. That is, the pressure application step begins while the cover insertion step is progressing.

[0047] When the lid portion 22 of the cover 21 comes into contact with the outer wall portion 13 and the inner wall portion 14 of the main body 11, the cover insertion step is completed and the top surface of the main body 11 is closed by the cover 21.

[0048] In this embodiment, the fixing step is performed almost simultaneously with the completion of the cover insertion step. The through holes of the engagement portions 26 of the cover 21 engage with the claw-shaped protrusions 19 of the main body 11, completing the snap-fit ​​connection.

[0049] 7(a) shows a partial cross-sectional view in the vertical direction of the housing 1 when all steps are completed and the housing 1 is holding the substrate X. FIG. 7(b) shows a partial side view of the main body 11 and cover 21 supporting the substrate X as seen from inside the housing 1.

[0050] After the cover insertion process and the fixing process are completed, the upward movement of the substrate X is restricted by the support of the multiple reference protrusions 16 and the substrate support parts 15, as well as by the pressure of the elastically deformed sliding protrusions 24. Furthermore, even if the housing 1 is subjected to external vibrations or impacts, the auxiliary support parts 25 are in contact with the upper surface of the substrate X, thereby always preventing the substrate X from shifting or generating abnormal noise.

[0051] [Substrate holding structure]

[0052] The substrate holding structure provided by the housing 1 and the substrate X of this embodiment is as follows.

[0053] The housing 1 includes a main body 11 and a cover 21. The main body 11 includes a bottom surface 12, and an outer wall 13 and an inner wall 14 provided on the periphery of the bottom surface 12. A substrate support portion 15 is further provided inside the inner wall portion 14, and a plurality of rectangular column-shaped reference protrusions 16 are arranged on the substrate support portion 15. The cover 21 includes a lid portion 22 that closes the top surface of the main body 11, a side wall portion 23, a plurality of sliding protrusions 24, and a plurality of auxiliary support portions 25. The sliding protrusions 24 are fixed at positions that contact the reference protrusions 16 when the cover 21 is fixed to the main body 11. The sliding protrusions 24 have inclined surfaces 24b that slide along the ends of the reference protrusions 16. The substrate X has a plurality of notches that fit into the reference protrusions 16. When the notch in the substrate X and the reference protrusion 16 are fitted together, one side of the substrate X is supported by the substrate support portion 15, and the side wall portion 23 of the cover 21 is inserted between the outer wall portion 13 and the inner wall portion 14 of the main body 11, the sliding protrusion 24 elastically deforms and the tip of the sliding protrusion 24 applies pressure to the upper surface of the substrate X. [Example]

[0054] An example that embodies the housing 1 of this embodiment will be described. The housing 1 of this example suitably holds a board X that is 60 mm long and 110 mm wide. The board X has four notches of 5 x 3 mm.

[0055] The main body 11 of the housing 1 is made of polybutylene terephthalate mixed with 30% glass fiber. The cover 21 of the housing 1 is made of polypropylene mixed with 30% talc. Because the cover 21 is made of a material more flexible than the main body 11, elastic deformation when the sliding protrusion comes into contact with the reference protrusion proceeds smoothly.

[0056] The vertical length of the through-hole of the engaging portion 26 of the cover 21 is 0.5 mm longer than the vertical length of the claw-shaped protrusion 19 of the main body 11. Despite this space being set, the housing 1 of this embodiment restricts upward movement by the pressure of the elastically deformed sliding protrusion 24 in addition to the support provided by the reference protrusion 16 and the board support portion 15. Furthermore, even when the housing 1 is subjected to external vibrations or impacts, the auxiliary support portion 25 can hold the upper surface of the board X, constantly preventing the board X from shifting or generating abnormal noise.

[0057] 7, the housing 1 has large spaces above and below the board X. In this embodiment, the height of the spaces is three times or more the thickness of the board X. By providing such spaces, the housing 1 can suitably accommodate the board X on which tall electronic components are mounted.

[0058] The above describes the housing, the substrate holding method, and the substrate holding structure of the present invention, but the configuration of the housing can be modified as appropriate. For example, the method of fixing the main body and the cover can be a latch or lever method in addition to a snap fit connection. The shape of the sliding member does not need to be plate-like, and any shape that is elastically deformable can be used. [Industrial Applicability]

[0059] The housing and board holding structure according to the present invention can be mounted on any industrial or domestic equipment, as well as on vehicles. [Explanation of symbols]

[0060] 1 chassis 11 Main unit 12 Bottom part 13 Exterior wall 14 Inner wall 15 Substrate support 16 Reference protrusion 16a Crush Rib 17 Side of reference projection 17a Fillet of reference protrusion 18 Groove 19 Claw-shaped protrusion 21 Cover 22 Lid 23 Side wall 24 Sliding protrusion 24a Fillet of sliding protrusion 24b Slope 25 Auxiliary support part 26 Engagement part

Claims

1. A housing for holding a substrate, A main body and a cover fixed to the main body, the main body has a bottom surface portion, an outer wall portion and an inner wall portion provided on a periphery of the bottom surface portion, and a substrate support portion and a reference protrusion provided inside the inner wall portion, the cover has a lid portion that closes the top surface of the main body, a side wall portion, a plurality of sliding protrusions, and a plurality of auxiliary support portions; the sliding projection is fixed at a position where it contacts the reference projection when the cover is aligned to close the main body, and the sliding projection has an inclined surface that slides along an end of the reference projection; A housing characterized in that the tip of the sliding protrusion presses against the other surface of the substrate, one surface of which is supported by the substrate support portion.

2. The reference protrusion has a substantially rectangular column shape, and fillets are formed on two opposing sides of the tip thereof, The sliding protrusions are formed in pairs, 2. The housing according to claim 1, wherein the sliding protrusions are elastically deformed when the inclined surfaces of the sliding protrusions contact the fillets of the reference protrusions.

3. The reference projections are provided three or more times, 2. The housing according to claim 1, wherein each of the reference protrusions is fixed at a position where it fits into one of three or more notches provided in the substrate that it holds.

4. 2. The housing according to claim 1, wherein the reference protrusion has a crush rib on a side surface.

5. 2. The housing according to claim 1, wherein a snap fit is provided for fixing the cover to the body.

6. A method for holding a substrate having a notch in a housing having a main body and a cover fixed to the main body, comprising: the main body has a bottom surface portion, an outer wall portion and an inner wall portion provided on a periphery of the bottom surface portion, and a substrate support portion and a reference protrusion provided inside the inner wall portion, the cover has a lid portion that closes the top surface of the main body, a side wall portion, a plurality of sliding protrusions, and a plurality of auxiliary support portions, the sliding protrusions being fixed at positions that come into contact with the reference protrusions when the cover is fixed to the main body, an alignment step of aligning a position of a notch of the substrate with a position of the reference protrusion; a substrate placing step of moving the substrate along the reference protrusion and placing it on a substrate support part; a cover inserting step of inserting a side wall portion of the cover between the outer wall portion and the inner wall portion of the main body; an elastic deformation step of elastically deforming the sliding protrusion in contact with the tip of the reference protrusion; a pressing step of pressing the substrate with the tip of the sliding protrusion; a fixing step of fixing the cover to the main body; A substrate holding method comprising:

7. A substrate and a housing are provided. the housing includes a main body and a cover fixed to the main body; the main body has a bottom surface portion, an outer wall portion and an inner wall portion provided on a periphery of the bottom surface portion, and a substrate support portion and a reference protrusion provided inside the inner wall portion, the cover has a lid portion that closes the top surface of the main body, a side wall portion, a plurality of sliding protrusions, and a plurality of auxiliary support portions; the sliding projection is fixed at a position where it comes into contact with the reference projection when the cover is fixed to the main body, and has an inclined surface that slides along an end of the reference projection; the substrate has a plurality of notches that fit onto the reference protrusions; A substrate holding structure in which the reference protrusion is fitted into the notch of the substrate, one side of the substrate is supported by the substrate support portion, the side wall portion of the cover is inserted between the outer wall portion and the inner wall portion of the main body, and the tip of the sliding protrusion presses against the upper surface of the substrate.

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