CN115515347A - Storage case and assembling method - Google Patents

Abstract

The invention provides a storage case and an assembling method. The vibration and abnormal noise caused by the vibration are reduced, and the generation of cutting chips during the assembly of the housing is suppressed. The housing case includes a base on which the substrate is mounted and a cover which is mounted on the base so as to house the substrate therein, the cover includes an upper surface portion, a side portion extending from the upper surface portion and covering a periphery of the base, a bent portion formed at an end of the side portion and bent with a curvature at an outer side thereof, a cut-off surface portion formed at an end other than the bent portion and having a cut-off surface facing the base, and a claw portion extending from the end and engaging with the base, the base includes a base portion, a wall portion rising from the base portion and engaging with an inner side of the side portion, a sliding portion formed on an outer side surface of the wall portion and allowing an inner surface of the bent portion or the side portion to slide when the cover is mounted, and an abutting portion formed at an outer side of the wall portion and abutting against the cut-off surface, the claw portion engages with the base, and the abutting portion abuts against the cut-off surface.

Description

Storage case and assembling method

Technical Field

The present invention relates to a storage case and an assembling method of the storage case.

Background

Conventionally, in a housing case which is mounted on a moving body such as a vehicle and which houses a printed circuit board or the like therein, there has been known an assembling method or the like for reducing rattling caused by vibration, abnormal noise caused by the rattling, and the like, and suppressing the generation of cutting chips when assembling the housing case.

For example, patent document 1 discloses a method of assembling a storage case including: a base having a substrate portion; and a box-shaped cover having an open lower surface side and attached to the base so as to cover the upper surface side of the substrate portion. In the assembling method, the anti-shaking projections are provided at a plurality of positions on the peripheral edge of the substrate portion so as to come into contact with the opening-side end edge of the cover positioned at the mounting position with respect to the base from the outside, and the anti-shaking projections are formed with slopes on the insides thereof, the slopes pressing the opening-side end edge to elastically deform the peripheral wall of the cover to the inside and to apply reaction forces in the direction in which the cover is separated from the substrate portion. Then, a pressure-contact protrusion portion that is bent toward the lower surface side of the base plate portion to hold the cover at the mounting position against the reaction force is formed at the opening-side end edge of the cover. The outer surface of the opening side end edge of the cover is pressed from the outside to elastically deform the peripheral wall of the cover inward to avoid contact between the opening side end edge of the cover and the anti-rattling projection, and the cover is moved to the mounting position with respect to the base to perform positioning so that the opening side end edge of the cover contacts the anti-rattling projection at the end of positioning. Finally, the pressure-bonding protrusion of the cover positioned by the positioning is bent toward the lower surface of the substrate.

Patent document 1: japanese patent laid-open No. 2005-340700

Since cutting chips generated during assembly may adversely affect the quality of the printed circuit board or the like to be stored, it is important to prevent the cutting chips from being generated in the storage case. In the above-described conventional art, in order to avoid the generation of cutting chips, the shield peripheral wall is elastically deformed inward by the anti-rattling projection, and the anti-rattling projection and the shield peripheral wall are prevented from rubbing against each other at the time of assembly, thereby avoiding the generation of cutting chips.

Not only the method of avoiding chips, but also, for example, the following configurations are known: the end of the cover rubbing against the base is formed with a bent portion bent with a slight outward curvature, thereby preventing the edge of the cover from cutting the side surface of the base to generate cutting chips. In the housing case having this structure, when the cover is press-fitted to the base for assembly (attachment), the cover is stopped when the tip of the bent portion of the cover abuts against the stopper portion of the base, and in this state, the claw portion of the cover is bent and pressure-bonded to assemble the cover and the base. However, in this method, the bent portion is often formed by press working (for example, crimping, bending, and the like, hereinafter referred to as crimping) other than shearing, and when the dimensional accuracy of the bent portion in the cover attaching and detaching direction is not high, there is a problem as follows: a part that cannot be brought into contact with the stopper may be formed between the bent portion and the stopper, and as a result, a gap may be formed, and rattling may easily occur.

Disclosure of Invention

The present invention has been made in view of the above circumstances, and provides a storage case and a method of assembling the storage case, which can reduce rattling, abnormal noise caused by the rattling, and the like in the storage case in which a printed circuit board or the like is stored, and can suppress the generation of cutting chips when the storage case is assembled.

In order to solve the above problem, there is provided a storage case including: a base on which a substrate is mounted; and a cover mounted on the base so as to house the substrate therein, the cover including: an upper surface portion; a side part extending from the upper surface part and covering the periphery of the base; a bending part formed at an end of the side part and bent with a curvature at an outer side; a cut surface portion formed at an end other than the bent portion, the cut surface portion of the cut surface portion facing the base; and a claw portion extending from the end portion and engaged with the base, the base having: a base portion; a wall portion rising from the base portion and fitted inside the side portion; a sliding part formed on the outer side surface of the wall part and used for sliding the inner surface of the bending part or the side part when the cover is installed; and an abutting portion formed outside the wall portion and abutting against the cut surface, the claw portion engaging with the base, the abutting portion abutting against the cut surface.

Thus, a storage case is provided in which a bent portion bent with a curvature on the outside and a cut-out surface portion with high dimensional accuracy in the cover attachment direction are provided at the end of the cover, and the cut-out surface portion is brought into contact with the base, whereby rattling, abnormal noise caused by the rattling, and the like can be reduced, and the generation of cutting chips during assembly can be suppressed.

Further, the abutting portion may protrude from the base portion toward the cover outside the wall portion, and a length from the upper surface portion to the cut surface of the cut surface portion may be shorter than a length from the upper surface portion to a tip end of the bent portion.

Accordingly, the abutting portion is formed in a convex shape, and the length of the cut surface portion is made shorter than that of the bent portion, so that the cut surface portion can be easily manufactured while ensuring dimensional accuracy in a manufacturing process (press working of the cover), and the cover is guided by contacting the bent portion on the base before the cut surface portion when the cover is fitted on the base, and therefore, cutting chips due to the cut surface portion are less likely to be generated.

The sliding portion may protrude in an outer direction of the wall portion from an outer side surface of the wall portion facing the cut surface portion.

Thus, the outer side surface of the wall portion opposed to the cut surface portion protrudes in the outer direction of the wall portion, and the inner surfaces of the bent portion and the side portion are pressed by the sliding portion when sliding on the sliding portion, so that the gap between the cut surface portion and the outer side surface of the wall portion is increased by the elastic deformation, and the contact with the cut surface portion can be avoided more reliably.

In order to solve the above problem, an assembling method of a housing case having a base on which a substrate is mounted and a cover attached to the base so as to house the substrate therein is provided, the assembling method comprising: a cover having a bent portion formed at an end portion covering a side portion around the base and bent with a curvature on an outer side, a cut surface portion formed at an end portion other than the bent portion, the cut surface portion facing the base, and a claw portion extending from the end portion and engaging with the base; forming a wall portion rising from the base portion and fitted inside the side portion, a sliding portion formed on an outer side surface of the wall portion and allowing the bent portion to slide when the cover is attached, and an abutting portion formed on an outer side of the wall portion and abutting against the cut surface in the base; aligning the bending part and the sliding part and the cutting surface part to the abutting part; pressing the cover into the base while sliding the inner surfaces of the bent portions or the side portions on the sliding portions; stopping the press-fitting when the cut surface abuts against the abutting part; and engaging the claw portion with the base.

Thus, a method of assembling a storage case is provided, in which a bent portion bent with a curvature on the outside and a cut-off surface portion having high dimensional accuracy in the cover attachment direction are formed at an end portion of a cover, and the bent portion and a sliding portion and the cut-off surface portion are aligned so as to correspond to a contact portion, and the bent portion and the like are pressed in until the cut-off surface abuts against the contact portion while sliding on the sliding portion, whereby rattling and abnormal noise caused by the rattling can be reduced, and the generation of cutting chips during assembly can be suppressed.

In order to solve the above problem, an assembly method of a storage case having a base on which a substrate is mounted and a cover attached to the base so as to internally store the substrate is provided, the cover comprising: an upper surface portion; a side part extending from the upper surface part and covering the periphery of the base; a bending part formed at an end of the side part and bent with a curvature at an outer side; a cut surface portion formed at an end other than the bent portion, the cut surface portion of the cut surface portion facing the base; and a claw portion extending from the end portion and engaged with the base, the base having: a base portion; a wall portion rising from the base portion and fitted inside the side portion; a sliding part formed on the outer side surface of the wall part and used for sliding the inner surface of the bending part or the side part when the cover is installed; and an abutting portion formed outside the wall portion and abutting against the cut surface, the assembling method including: aligning the bent portion and the sliding portion and the cut surface portion and the abutting portion so as to correspond to each other; pressing the cover into the base while sliding the inner surfaces of the bent portions or the side portions on the sliding portions; stopping the press-in when the cut surface abuts against the abutting part; and engaging the claw portion with the base.

Thus, the cover provided with a bending portion bent at the outer side and a cut surface portion with high dimensional accuracy in the cover mounting direction at the end portion, and the base provided with a sliding portion formed on the outer side surface of the wall portion and allowing the bending portion and the like to slide, and an abutting portion formed on the outer side of the wall portion and abutting against the cut surface are used, and the bending portion and the sliding portion and the cut surface portion are aligned so as to correspond to the abutting portion, and the bending portion and the like are pressed in until the cut surface abuts against the abutting portion while sliding on the sliding portion, whereby rattling, abnormal noise caused by the rattling, and the like can be reduced, and the generation of cutting chips during assembly can be suppressed.

As described above, according to the present invention, it is possible to provide a storage case and a method of assembling a storage case, which can reduce rattling, abnormal noise caused by the rattling, and the like in the storage case in which a printed circuit board or the like is stored, and suppress the generation of cutting chips when the storage case is assembled.

Drawings

Fig. 1 is a plan view, (a) a front view, (C) a rear view, (D) a bottom view, (E) a right side view, and (F) a left side view of the storage case according to the first embodiment of the present invention.

Fig. 2 is a perspective view of the storage case according to the first embodiment of the present invention, (a) viewed from above, and (B) viewed from below.

Fig. 3 is a plan view, (a) a front view, (B) a rear view, (C) a bottom view, (D) a right side view, and (F) a left side view of the base according to the first embodiment of the present invention.

Fig. 4 is a perspective view of the base according to the first embodiment of the present invention, (a) viewed from above, and (B) viewed from below.

Fig. 5 is an enlarged view of the base according to the first embodiment of the present invention, which is shown in fig. 3, (a) an enlarged view of a portion a, (B) an enlarged view of a portion B, (C) an enlarged view of a portion C, (D) an enlarged view of a portion D, (E) an enlarged view of a portion E, (F1) an enlarged view of a portion F, and (F2) an enlarged view of a portion F from which lines showing outer shapes of the contact portion and the base are removed to facilitate understanding of a difference in thickness of the sliding portion.

Fig. 6 is (a) a plan view, (B) a front view, (C) a rear view, (D) a bottom view, (E) a right side view, and (F) a left side view of the cover according to the first embodiment of the present invention.

Fig. 7 is a perspective view of the cover according to the first embodiment of the present invention, (a) viewed from above, and (B) viewed from below.

Fig. 8 is a cross-sectional view of (a) a section G-G (a section including a bent portion) in fig. 6, (B) a section I-I (a section including a cut-off surface portion) in fig. 6, (C) an enlarged view of a portion H, and (D) an enlarged view of a portion J of the cover according to the first embodiment of the present invention.

Fig. 9 is an exploded assembly view of the storage case according to the first embodiment of the present invention, as viewed from above.

Fig. 10 is an exploded assembly view of the storage case according to the first embodiment of the present invention as viewed from below.

Fig. 11 is an exploded assembly view (a) viewed from above and an exploded assembly view (B) viewed from below, of the storage case according to the first embodiment of the present invention, when the folding portion and the sliding portion and the cut surface portion and the abutting portion are aligned so as to correspond to each other.

Description of the reference symbols

1: a housing case; 10: a base; 11: a base portion; 12: a wall portion; 13: a sliding part; 14: an abutting portion; 14Z: a non-abutting portion; 15: a claw section engaging section; 20: a cover; 21: an upper surface portion; 22: a side portion; 23: a bent portion; 23R: a R part; 23S: an end face; 24: cutting off the face; 24S: cutting off the section; 25: a claw portion; 26: an end portion; 30: a substrate; 40: a connector; 41: a terminal block.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

< first embodiment >

The storage case 1 of the present embodiment will be described with reference to fig. 1 to 11. The housing case 1 is mounted on a mobile body such as a vehicle, is a case for housing the board 30 and the like therein, and constitutes, for example, an ECU (electronic Control Unit) for controlling components such as various motors mounted on the vehicle. However, the storage case 1 is not limited thereto, and can be applied to any case that stores therein a printed circuit board that functions electrically, since it can reduce vibration and abnormal noise caused by the vibration, and can suppress the generation of cutting chips during assembly.

As shown in fig. 1, 2, and 11 (a), the housing case 1 includes a base 10 on which a substrate 30 is mounted, and a cover 20 attached to the base 10 so as to house the substrate 30 therein. The cover 20 is attached to the base 10 by the claw portions 25 engaging with the claw portion engaging portions 15 of the base 10. In addition, a connector 40 for electrically connecting the substrate 30 to the outside, a terminal block 41 for protecting a connector cable, and the like are provided on the bottom surface and the side surface of the housing case 1. The cut surface portion 24 of the cover 20 is provided at a position corresponding to the contact portion 14 of the base 10, and the two abut against each other.

As shown in fig. 3 to 5, the susceptor 10 is configured to have a substrate 30 disposed thereon, and includes a base portion 11 having a rectangular shape in plan view, a wall portion 12 rising upward from the base portion 11 so as to surround the periphery of the substrate 30, and an abutting portion 14 formed outside the wall portion 12. A female screw for screwing the substrate 30 is appropriately provided on the upper surface of the base portion 11 (the surface that becomes the inner side of the housing case 1 when the assembly is completed). On the lower surface of the base portion 11 (the surface that becomes the outer side of the housing case 1 when the assembly is completed), claw portion engaging portions 15 are formed at positions corresponding to the claw portions 25 on the outer peripheral portion, and a recess portion for attaching the connector 40 is formed.

The wall portion 12 is formed to substantially surround the vicinity of the height of the substrate 30 when rising from a slightly inner side of the outer periphery of the base portion 11 to the mounting substrate 30, and a side surface of the outer side of the wall portion 12 is fitted to the inner side of the cover 20. When the base 10 and the cover 20 are assembled, the wall portion 12 is formed from the outer periphery of the base portion 11 inward so that the side surfaces of the two are flush with each other, that is, so that the thickness of the material of the cover 20 is large.

The abutting portion 14 is formed outside the wall portion 12 flush with the side surface of the base 10 at a height lower than the height of the wall portion 12 and higher than the base portion 11 (non-abutting portion 14Z) where the abutting portion 14 is not formed, that is, protrudes from the upper surface of the base portion 11 toward the cover 20. As described later, the abutting portion 14 may be lower than the base portion 11 (non-abutting portion 14Z) on which the abutting portion 14 is not formed, that is, may be formed to be recessed.

In addition, the abutting portion 14 is formed such that a side surface of the cover 20 and a side surface of the abutting portion 14 are flush with each other when the base 10 and the cover 20 are assembled. The contact portion 14 is provided at 1 on a front side surface having a region for connecting the connector on the side surface, and at 2 on each of the other side surfaces. The length of 1 abutting portion 14 in plan view is appropriately determined. The upper surface of the contact portion 14 is in contact with a cut surface 24S of the cap 20 described later in assembly, but is preferably flat so as to be in contact with the cut surface 24S in a wide range.

A sliding portion 13 is provided on the outer side surface of the wall portion 12, and the inner surface of the cover 20 slides when the cover 20 is attached. The sliding portion 13 is provided on the outer side surface of the wall portion 12 corresponding to the portion where the abutting portion 14 is not formed (non-abutting portion 14Z). For example, a sliding portion 13 is provided in a substantially central portion of the wall portion 12 on the left side surface, the right side surface, and the back surface, and 2 contact portions 14 are provided on both sides with the sliding portion 13 interposed therebetween. That is, the sliding portions 13 and the abutting portions 14 are alternately provided. On the front surface side, the number of the contact portions 14 is 1 due to the spatial relationship, but the slide portion 13 is provided at a position corresponding to the non-contact portion 14Z. The sliding portion 13 and the contact portion 14 are provided at positions not overlapping in the direction in which the cover 20 is attached to the base 10.

The sliding portion 13 may protrude in the outer direction of the wall portion 12 from the outer side surface (non-sliding portion 13Z) of the wall portion 12 corresponding to the portion where the contact portion 14 is formed (i.e., the wall portion 12 facing the cut surface portion 24). As shown in fig. 5 (F2), the thickness L1 of the sliding portion 13 is formed to be thicker outward than the thickness L2 of the wall portion 12 (the thickness L2 of the non-sliding portion 13Z) where the sliding portion 13 is not formed. This has the effect of expanding the side portions 22 of the cover 20 outward when the cover 20 is attached to the base 10, as will be described later.

As shown in fig. 6 to 8, the cover 20 includes: an upper surface portion 21, which is rectangular in plan view, constituting an upper surface of the storage case 1; a side portion 22 extending from the periphery of the upper surface portion 21 in the direction of the base 10 and covering the periphery of the wall portion 12 of the base 10; and claw portions 25 which extend from end portions 26 of the side portions 22 further in the direction of the base 10 and engage with the claw portion engaging portions 15 of the base 10. As shown in fig. 7 (B), the end portion 26 of the side portion 22 is formed with a bent portion 23 and a cut surface portion 24 in addition to the claw portion 25. The claw portion 25 is formed to extend from the bent portion 23 in the present embodiment, but is not limited thereto, and may be formed to extend from the cut surface portion 24.

As shown in fig. 8 (a) and 8 (C), the bent portion 23 is provided so that an R portion 23R having a curvature faces the inner wall portion 12, and is bent outward. The cover 20 is formed by press working after cutting a thin plate into a predetermined size, and the side portion 22 is formed, but the end surface 23S formed at the time of cutting is further bent outward by crimping or the like, and thus is not directed toward the base 10 but directed outward. The bent portion 23 is provided at a position corresponding to the sliding portion 13 of the base 10.

As shown in fig. 8 (B) and 8 (D), the cut surface portion 24 is formed in a state in which the cut surface 24S formed when cutting the thin plate is oriented in the direction of the base 10 without being bent at the end portion 26 other than the bent portion 23. The cut surface portion 24 is provided at a position corresponding to the contact portion 14 of the base 10. That is, the folded portions 23 and the cut surface portions 24 are alternately provided at the end portions 26.

Further, a length L3 from the upper surface portion 21 to the cut surface 24S of the cut surface portion 24 is formed shorter than a length L4 from the upper surface portion 21 to the tip of the bent portion 23. This corresponds to the case where the abutting portion 14 protrudes from the upper surface of the base portion 11 toward the cover 20 in the present embodiment. By forming the abutting portion 14 in a convex shape and making the length of the cut surface portion 24 shorter than the bent portion 23 in this way, it is possible to easily secure dimensional accuracy of the cut surface portion 24 in the manufacturing process (press working of the cover 20) and manufacture it. When the contact portion 14 is formed recessed in the upper surface of the base portion 11, the lengths of the two portions are opposite to each other. That is, the length L3 from the upper surface portion 21 to the cut surface 24S of the cut surface portion 24 may be longer than the length L4 from the upper surface portion 21 to the tip of the bent portion 23.

As shown in fig. 9 to 11, the storage case 1 is assembled. First, the connector 40 and the terminal block 41 are mounted on the base 10 at predetermined positions. Next, the substrate 30 is fixed to the upper surface side of the base 10 by male screws, and is electrically connected to the connector 40. Next, the claw portions 25 of the cover 20 are aligned to correspond to the claw portion engagement portions 15 of the base 10 (dashed line arrows in fig. 11 a), and the end portions 26 of the side portions 22 of the cover 20 are fitted to the vicinity of the top of the wall portion 12 of the base 10. In this case, the bent portion 23 and the sliding portion 13 and the cut surface portion 24 and the contact portion 14 are aligned so as to correspond to each other.

In this state, when the cover 20 is press-fitted to the base 10, the bent portion 23 is longer than the cut surface portion 24, and therefore the bent portion 23 contacts the bent portion 23 before the cut surface portion 24 on the outer side surface of the wall portion 12, but the bent portion 23 has the R portion 23R on the wall portion 12 side, and therefore the wall portion 12 is not damaged, and as a result, the generation of cutting chips can be suppressed. Further, since the cutting face portion 24 is guided in contact with the bent portion 23 earlier than the cutting face portion, it slightly expands outward. In particular, since the sliding portion 13 protrudes in the outer direction of the wall portion 12 than the non-sliding portion 13Z, the bent portion 23 is expanded outward more largely. This pressing effect is exerted not only when the bent portion 23 slides on the sliding portion 13 but also when the inner surface of the side portion 22 at the position corresponding to the bent portion 23 slides on the sliding portion 13 in the process of gradually pressing in the cover 20 for attachment.

As described above, when the inner surfaces of the bent portions 23, and the side portions 22 at the middle of the upper surface portion 21 slide on the sliding portions 13 and the side portions 22 are pressed outward, the side portions 22 at the middle of the cut surface portion 24 and the upper surface portion 21 are also elastically deformed outward, and the gap between the cut surface portion 24 and the outer side surface of the wall portion 12 increases. Since the cut surface portion 24 does not have the R portion 23R like the bent portion 23, it is preferable to avoid contact with the side portion 22 (the non-sliding portion 13Z). By projecting the sliding portion 13 outward beyond the outer side surface (non-sliding portion 13Z) of the wall portion 12 facing the cut surface portion 24, contact between the wall portion 12 and the cut surface portion 24 can be avoided more reliably, and thus generation of cutting chips at the time of assembly can be suppressed.

The cover 20 is press-fitted to the base 10 while sliding the inner surfaces of the bent portions 23 or the side portions 22 on the sliding portions 13, and the press-fitting is stopped when the cut surface 24S of the cut surface portion 24 abuts against the abutting portion 14, so that the claw portions 25 are engaged with the base 10. In this way, in the storage case 1, the contact portion 14 contacts the cut surface 24S. Since the cut surface 24S is formed (cut) when the thin plate is cut, the dimensional accuracy in the cover attaching direction is higher than the front end of the bent portion 23 formed by crimping or the like. Therefore, by providing the cut surface portion 24 having high dimensional accuracy in the mounting direction of the cover 20 and bringing the cut surface 24S into contact with the contact portion 14 of the base 10, it is possible to reduce rattling and abnormal noise caused by the rattling.

As for the tip of the bent portion 23 and the non-contact portion 14Z provided at the position corresponding to the bent portion 23, if the cut surface 24S is in contact with the contact portion 14, the tip of the bent portion 23 may be in contact with the non-contact portion 14Z, or may not be in contact with the non-contact portion 14Z.

As described above, the following storage case 1 can be provided: by providing the bent portion 23 bent with a curvature on the outer side and the cut surface portion 24 with high dimensional accuracy in the attaching direction of the cover 20 at the end portion 26 of the cover 20 and abutting the cut surface 24S against the abutting portion 14 of the base 10, it is possible to reduce rattling and abnormal noise caused by the rattling, and to suppress the generation of cutting chips at the time of assembly.

In addition, in the base 10 and the cover 20 having the above-described configuration, the bent portion 23 is aligned with the sliding portion 13 and the cut surface portion 24 is aligned with the abutting portion 14, the cover 20 is press-fitted to the base 10 while the inner surface of the bent portion 23 or the side portion 22 is slid on the sliding portion 13, and the press-fitting is stopped when the cut surface 24S abuts against the abutting portion 14, and the claw portion 25 is engaged with the base 10.

Thus, by using the cover 20 provided with the bent portion 23 bent with a curvature on the outside and the cut surface portion 24 with high dimensional accuracy in the mounting direction of the cover 20 at the end portion 26, and the base 10 provided with the sliding portion 13 formed on the outer side surface of the wall portion 12 and allowing the bent portion 23 and the like to slide, and the abutting portion 14 formed on the outer side surface of the wall portion 12 and abutting against the cut surface 24S, the bent portion 23 and the sliding portion 13 and the cut surface portion 24 and the abutting portion 14 are aligned so as to correspond to each other, and the bent portion 23 and the like are pushed in until the cut surface 24S abuts against the abutting portion 14 while sliding on the sliding portion 13, whereby rattling and abnormal noise and the like caused by the rattling can be reduced, and the generation of cutting chips during assembly can be suppressed.

Further, there is provided an assembling method of a housing case 1, the housing case 1 including: a base 10 on which a substrate 30 is mounted; and a cover 20 mounted on the base 10 so as to house the substrate 30 therein, wherein the assembling method includes: in the cover 20, a bent portion 23, a cut surface portion 24 and a claw portion 25 are formed, the bent portion 23 is formed at an end portion 26 of the side portion 22 covering the periphery of the base 10 and is bent with a curvature on the outer side, the cut surface portion 24 is formed at an end portion 26 other than the bent portion 23, a cut surface 24S of the cut surface portion 24 faces the base 10, and the claw portion 25 extends from the end portion 26 and is engaged with the base 10; in the base 10, a wall portion 12, a sliding portion 13, and an abutting portion 14 are formed, the wall portion 12 rising from the base portion 11 and fitting inside the side portion 22, the sliding portion 13 being formed on the outer side surface of the wall portion 12, the bent portion 23 sliding when the cover 20 is attached, the abutting portion 14 being formed on the outer side of the wall portion 12 and abutting against the cut surface 24S; positioning is performed so that the bent portion 23 and the sliding portion 13 and the cut surface portion 24 correspond to the contact portion 14; pressing the cover 20 into the base 10 while sliding the inner surfaces of the bent portions 23 or the side portions 22 on the sliding portions 13; stopping the press-fitting when the cut surface 24S abuts against the abutting portion 14; and engaging the claw portion 25 with the base 10. Thus, a method of assembling the storage case 1 is provided, which can reduce rattling and abnormal noise caused by the rattling, and suppress the generation of cutting chips at the time of assembly.

The present invention is not limited to the illustrated embodiments, and can be implemented by a configuration without departing from the scope of the contents described in the claims. That is, the present invention has been particularly shown and described with respect to specific embodiments, but various modifications can be made by those skilled in the art in terms of the number and other detailed configurations of the above-described embodiments without departing from the scope of the technical spirit and the object of the present invention.

Claims (5)

1. A storage case, comprising:

a base on which a substrate is mounted; and

a cover attached to the base so as to house the substrate therein,

it is characterized in that the preparation method is characterized in that,

the cover has:

an upper surface portion;

a side portion extending from the upper surface portion and covering the periphery of the base;

a bent portion formed at an end of the side portion and bent with a curvature at an outer side;

a cut surface portion formed at the end portion other than the bent portion, the cut surface portion having a cut surface facing the base; and

a claw portion extending from the end portion and engaged with the base,

the base has:

a base portion;

a wall portion rising from the base portion and fitted inside the side portion;

a sliding portion formed on an outer side surface of the wall portion, the sliding portion being configured to slide an inner surface of the bent portion or the side portion when the cover is attached; and

an abutting portion formed outside the wall portion and abutting against the cut surface,

the claw part is clamped with the base,

the abutting part abuts against the cut surface.

2. The storage case of claim 1,

the abutting portion protrudes from the base portion in a cover direction outside the wall portion,

the length of the cut surface portion from the upper surface portion to the cut surface is shorter than the length of the bent portion from the upper surface portion to the front end of the bent portion.

3. The receiving case according to claim 1 or 2,

the sliding portion protrudes in an outer direction of the wall portion from an outer side surface of the wall portion, the outer side surface being opposed to the cut surface portion.

4. An assembling method of a storage case having a base on which a substrate is mounted and a cover mounted on the base so as to house the substrate therein,

it is characterized in that the preparation method is characterized in that,

the assembling method comprises the following steps:

a cover that is provided with a bent portion that is formed at an end portion of a side portion covering the periphery of the base and that is bent with a curvature on the outer side, a cut surface portion that is formed at the end portion other than the bent portion, the cut surface portion facing the base, and a claw portion that extends from the end portion and engages with the base;

forming, in the base, a wall portion that rises from the base portion and fits inside the side portion, a sliding portion that is formed on an outer side surface of the wall portion and on which the bent portion slides when the cover is attached, and an abutting portion that is formed on an outer side of the wall portion and abuts against the cut surface;

aligning the bent portion and the sliding portion and the cut surface portion so as to correspond to the abutting portion;

pressing the cover into the base while sliding the inner surfaces of the bent portions or the side portions on the sliding portions;

stopping the press-fitting when the cut surface abuts against the abutting part; and

the claw portion is engaged with the base.

5. An assembling method of a housing case having a base on which a substrate is mounted and a cover attached to the base so as to house the substrate therein,

it is characterized in that the preparation method is characterized in that,

the cover has:

an upper surface portion;

a side portion extending from the upper surface portion and covering a periphery of the base;

a bent portion formed at an end of the side portion and bent with a curvature at an outer side;

a cut surface portion formed at the end portion other than the bent portion, the cut surface portion having a cut surface facing the base; and

a claw portion extending from the end portion and engaged with the base,

the base has:

a base portion;

a wall portion rising from the base portion and fitted inside the side portion;

a sliding portion formed on an outer side surface of the wall portion, the sliding portion being configured to slide an inner surface of the bent portion or the side portion when the cover is attached; and

an abutting portion formed outside the wall portion and abutting against the cut surface,

the assembling method comprises the following steps:

aligning the bent portion and the sliding portion and the cut surface portion so as to correspond to the abutting portion;

pressing the cover into the base while sliding the inner surfaces of the bent portions or the side portions on the sliding portions;

stopping the press-fitting when the cut surface abuts against the abutting portion; and

the claw portion is engaged with the base.

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