JP6372803B2 - Case - Google Patents

Description

  The present invention relates to a case that accommodates various objects.

2. Description of the Related Art Conventionally, a case having a first case and a second case that are joined to each other and define an accommodation space for accommodating various objects to be accommodated is known. As such a case, there is a case in which a packing is provided at a joint portion for waterproofing or dustproofing.
For example, Patent Document 1 below discloses a case in which a groove is provided on the mating surface of the rear case, and a sealing member that is fitted into the groove of the rear case is integrally formed on the mating surface of the front case. In addition, this case is configured such that the seal member of the front case is provided with a thin portion that protrudes toward the outer peripheral side and comes into contact with the surface facing the inner peripheral side of the groove of the rear case.

JP-A-7-95101

  By the way, since the sealing member as described above is relatively soft, it may be easily damaged, or may need to be replaced due to deterioration over time. There is also. In such a case, when the thin portion protruding toward the outer peripheral side as described above is provided, the corner portion that becomes the corner portion of the case is extended in the circumferential direction with respect to the thin portion due to the inner and outer peripheral differences. It is conceivable that a tensile force tends to act, and the thin wall portion tends to collapse.

  This invention is made | formed in view of the said situation, and it aims at providing the case which can improve the adhesiveness with respect to the site | part with which packing is contacted, making packing into another member.

In order to achieve the above object, a case according to the present invention includes a first case having a mounting portion on the outer peripheral side, and a receiving portion on the inner peripheral side arranged to face the mounting portion of the first case. A packing having a configuration in which a second case and a base portion attached to the attachment portion of the first case are integrally provided with a fin portion that comes into contact with the receiving portion of the second case with elastic deformation. The packing has a thickness of a base portion of a fin portion at a corner portion which becomes a corner portion of the first case and the second case, other than the corner portions of the first case and the second case. The thickness of the fin portion is larger than the thickness of the base portion of the fin portion, and the fin portion of the packing is inclined so as to be separated from the mounting portion toward the front side in the assembly direction of the second case with respect to the first case. The corner is said to be The base of the fin portion at a site other than the parts, to be thinner than the base of the fin portion of the corner portion, with a recess that opens toward the assembling direction tip side of the second casing to the first casing It is characterized by being.

  Since the case according to the present invention has the above-described configuration, it is possible to improve the adhesion to a portion with which the packing is abutted while using the packing as a separate member.

1 is a schematic exploded perspective view schematically showing an example of a case according to an embodiment of the present invention, with a part omitted. (A) is a schematic front view which shows typically an example of packing with which the case is equipped, (b) is a schematic front view which shows typically the state which assembled | attached the packing to an example of the 1st case with which the case is equipped. It is. (A) is a partially broken schematic longitudinal sectional view corresponding to the X1-X1 arrow in FIG. 2 (b), and (b) is corresponding to the X2-X2 arrow in FIG. 2 (b). It is a partially broken schematic exploded longitudinal sectional view. (A) is a partially broken schematic longitudinal sectional view corresponding to FIG. 3 (b), (b) is a partially broken schematic longitudinal sectional view corresponding to the YY line arrow in FIG. 2 (a). (C) is a partially broken schematic exploded longitudinal sectional view in which a part corresponding to FIG. 3 (b) is omitted. (A), (b) shows the example of the case concerning other embodiments of the present invention typically, and is a schematic front view corresponding to Drawing 2 (a) and (b), respectively. (A), (b) is a schematic front view which shows typically an example of the case concerning other embodiment of this invention, and was made to respond | correspond to FIG. 2 (a), (b), respectively. (A), (b) is a schematic front view which shows typically an example of the case concerning other embodiment of this invention, and was made to respond | correspond to FIG. 2 (a), (b), respectively.

Embodiments of the present invention will be described below with reference to the drawings.
In some of the drawings, some of the detailed reference numerals attached to other drawings are omitted.
In the following embodiments, directions such as the up and down direction will be described with reference to a state in which the case according to each embodiment is attached to an attachment target.

FIGS. 1-4 is a figure which shows typically an example of the case which concerns on 1st Embodiment.
As shown in FIG. 1, the case 1 according to the present embodiment includes a first case 10, a second case 20, and a packing 30 provided along a joint portion between the cases 10 and 20. Yes. The packing 30 includes a base portion 31 that is attached to an attachment portion 14 provided on one of the outer peripheral side of the first case 10 and the inner peripheral side of the second case 20 disposed so as to face the first case 10. . In addition, the packing 30 is configured such that a fin portion 32 is integrally provided on the base portion 31 and is brought into contact with the receiving portion 24 provided on the other side with elastic deformation. In the present embodiment, the mounting portion 14 is provided on the outer peripheral side of the first case 10 and the receiving portion 24 is provided on the inner peripheral side of the second case 20.

  By adopting the configuration as described above, it is possible to improve the adhesion to the portion with which the packing 30 is abutted while using the packing 30 as a separate member. That is, since the packing 30 is attached to the first case 10 provided with the attachment portion 14, that is, the first case 10 is separated from the first case 10, when the packing 30 is damaged or deteriorated with time, Can be exchanged. Further, even when the dimension between the mounting portion 14 and the receiving portion 24 varies in the circumferential direction or for each molded product, the fin portion 32 can be brought into contact with the receiving portion 24 with elastic deformation. As a result, insufficient adhesion or the like hardly occurs, and the adhesion to the receiving portion 24 can be improved.

  Further, in the present embodiment, the thickness of the base 34 of the fin portion 32 in the corner portion 16 that becomes the corner portion of the first case 10 is set to the fin portion 32 in the portions 15, 17, 18 other than the corner portion of the first case 10. The thickness of the base 33 is larger than the thickness of the base 33. With such a configuration, the fin portion 32 can be prevented from falling at the corner portion 16, and the fin portion 32 of the packing 30 can be more closely attached to the receiving portion 24. That is, when the packing 30 is attached so that the fin portion 32 faces the outer peripheral side, the corner portion 16 tends to fall due to a pulling force acting on the fin portion 32 in the circumferential direction. The rigidity of the base part 34 of the fin part 32 of the said part can be improved. Moreover, compared with the case where the base part of the fin part 32 is thickened over the full length, the fin part 32 in site | parts 15, 17, and 18 other than a corner part can be made to be easily elastically deformed. Thereby, the assembling property of the packing 30 is deteriorated, or when the case 1 is assembled, the fin portion 32 is pulled in the assembling direction by the receiving portion 24 and the base portion 31 is twisted so as to float from the mounting portion 14. Such a thing can be suppressed.

  Moreover, in this embodiment, the fin part 32 of the packing 30 is separated from the attachment part 14 toward the assembly direction front side of the case 20 provided with the receiving part 24 with respect to the case 10 provided with the attachment part 14. The shape is inclined like this. That is, the fin portion 32 of the packing 30 has a shape that is inclined so as to be separated from the attachment portion 14 toward the assembling direction front side of the second case 20 with respect to the first case 10. With such a configuration, when the first case 10 and the second case 20 are assembled, it is possible to prevent the circumferential fin portion 32 from falling and being bitten to an unintended side. The fin part 32 of the packing 30 can be more closely attached to the receiving part 24. Further, if the fin portion 32 is formed in an inclined shape in this way, the fin portion 32 tends to fall down at the corner portion 16 before the case 1 is assembled. Can be suppressed.

  In the present embodiment, the attachment portion 14 of the first case 10 is provided with the engagement hole 19 into which the engagement protrusion 39 provided on the base portion 31 of the packing 30 is fitted. With such a configuration, when the case 1 is assembled, it is possible to prevent the fin portion 32 from being pulled by the receiving portion 24 in the assembling direction and twisting so that the base portion 31 floats from the mounting portion 14. can do. Thereby, it can suppress that the packing 30 is bitten in the state where the case 1 is assembled, and the fin portion 32 of the packing 30 can be more closely attached to the receiving portion 24. it can. Moreover, the position shift of the circumferential direction with respect to the attaching part 14 of the packing 30 can be suppressed.

The case 1 may accommodate various electronic devices and other various objects. In addition, the case 1 may be a waterproof case or a dust-proof case that prevents moisture or dust from entering the case 1.
In the present embodiment, the case 1 is generally polygonal when viewed in the assembly direction. In the present embodiment, the case 1 has a substantially rectangular shape (in the illustrated example, a generally rectangular shape) when viewed in the assembling direction. Moreover, this case 1 is set as the structure attached to an attachment object so that one side part may become an upper side part. Further, the case 1 is a thin case in which the assembling direction is the thickness direction and the thickness dimension is relatively thin.
Moreover, in this embodiment, as shown in FIG.3 (b), the 2nd case 20 is opened toward one side which becomes a direction along an assembly direction, and the accommodation space 22 which accommodates a to-be-contained object is provided. The case main body 20 is used. The first case 10 is a substantially flat back cover 10 disposed so as to cover the opening of the case body 20.

In the present embodiment, the case 1 is provided with operation buttons, switches, and the like constituting a plurality of operation units in the case body 20, and a substrate on which electronic devices and various electronic components are mounted in the accommodation space 22. The equipment case is housed. As such a case 1, for example, an outer casing of a remote controller (remote controller) for remotely operating another device may be configured. As such a remote controller, for example, various AV devices, air conditioners, lighting devices, bathroom devices, toilet devices, and the like may be used.
Moreover, in this embodiment, this case 1 is made into the wall surface installation type attached to a wall surface so that the back cover 10 side may become the wall surface side as attachment object.

The case main body 20 is provided so as to be connected to the front plate-like portion 21 disposed on the side opposite to the attachment target side that is different from the attachment target of the case 1 and the peripheral edge portion of the front plate-like portion 21 and constitutes the peripheral edge. Peripheral wall portions 25, 26, 26 and 27. In the present embodiment, the case body 20 is substantially rectangular (in the illustrated example, generally rectangular) when viewed in the assembly direction of the case 1, and the peripheral edge of the front plate-like portion 21 is formed on the four peripheral edges. The upper plate-like portion 25, the both-side plate-like portions 26 and 26, and the lower plate-like portion 27 are provided. The front plate-like portion 21, the upper plate-like portion 25, the both-side plate-like portions 26 and 26, and the lower plate-like portion 27 define a housing space 22 that opens toward one side in the assembly direction.
Further, the surfaces (inner peripheral surfaces) facing the inner peripheral side of the upper plate-like portion 25, the both-side plate-like portions 26 and 26, and the lower plate-like portion 27 serving as the peripheral wall portions are the receiving portions 24.

The receiving portion 24 is configured so that a substantially uniform gap is formed over the entire circumference between the receiving portion 24 and the mounting portion 14 of the back cover 10 in a state where the case 1 is assembled. It is provided over the circumference.
Further, as shown in FIGS. 3B and 4A, the receiving portion 24 is configured so that the upper plate-like portion 25, the both-side plate-like portions 26, 26, and the lower plate-like portion 27 are open edge side portions (anti-front plate). At the shape portion side portion).
The receiving portion 24 of the upper plate-like portion 25 and the receiving portion 24 of the lower plate-like portion 27 are provided substantially in parallel so as to face each other in the vertical direction.
The receiving portions 24, 24 of the both-side plate-like portions 26, 26 are provided substantially in parallel so as to face each other in the vertical direction and the direction orthogonal to the assembly direction (left-right direction).

Further, the corner plate receiving portion is a corner between the upper plate-like portion 25 and the side plate-like portions 26 and 26 on both sides thereof, and the corner portion between the lower plate-like portion 27 and the side plate-like portions 26 and 26 on both sides thereof. Although not shown, 24 has a concave curved surface shape (R shape). The receiving portions 24 at the corner portions of these four corners are shaped according to the corner portions 16 of the mounting portion 14 of the back cover 10 to be described later.
Further, in the illustrated example, the upper plate-like portion 25, the both-side plate-like portions 26 and 26, and the lower plate-like portion 27 are stepped lower than the receiving portion 24 at the opening peripheral edge on the opening edge side with respect to the receiving edge 24. A recessed step portion 23 is provided. The recessed step portion 23 is provided over the entire periphery of the opening periphery of the case body 20.
In addition, a drain hole or the like may be provided in the lower plate portion 27 of the case body 20 as appropriate.

The back cover 10 has a configuration in which an attachment portion 14 is provided along a circumferential end portion on one side in the thickness direction of the thin flat plate-like lid body 11.
The lid body 11 has a substantially rectangular shape (in the illustrated example, a generally rectangular shape) when viewed in the assembly direction of the case 1. In the present embodiment, the lid body 11 (the back lid 10) is configured to cover the opening so as to be accommodated in the opening of the case body 20 as shown in FIG. In the state in which the case 1 is assembled, the outer peripheral end surface of the lid main body 11 is configured to be close to or in contact with the inner peripheral surface on the opening edge side of the case main body 20. Moreover, in the example of a figure, in the state which assembled | attached the said case 1, the thickness direction other side surface (surface which faces an attachment object side) of the cover main body 11 and the opening side end surface of the case main body 20 become substantially the same planar shape. Yes.
In addition, a protruding step portion that protrudes toward the outer peripheral side and is accommodated in the concave step portion 23 of the case main body 20 is provided on the other side portion in the thickness direction of the peripheral end portion of the lid main body 11.

Moreover, in this embodiment, the attaching part 14 is made into the attaching groove 14 provided so that it might extend in the circumferential direction. The mounting groove 14 is provided so as to face the outer peripheral side over the entire circumference of the peripheral end portion of the lid main body 11. Further, in the present embodiment, the mounting groove 14 has a substantially rectangular groove shape when viewed in the groove longitudinal direction, as shown in FIGS. 3 (a) and 4 (c).
As shown in FIG. 1 and FIG. 3A, the mounting groove 14 has a groove inner wall facing the opposite mounting target side on one side in the groove width direction and is formed by one side surface in the thickness direction of the peripheral end portion of the lid body 11. Has been. Further, the groove bottom of the mounting groove 14 is provided so as to protrude from the position of the lid main body 11 on the inner peripheral side toward the one side in the thickness direction (on the side opposite to the mounting target). It is constituted by. Further, the inner wall surface of the groove facing the mounting object side on the other side in the groove width direction of the mounting groove 14 is formed by a side wall piece portion 13 provided so as to protrude from the front end portion of the groove bottom piece portion 12 toward the outer peripheral side. It is configured.

The groove width of the mounting groove 14 (the width in the direction along the assembling direction of the case 1) is substantially the same over the entire circumference.
Further, the groove depth of the mounting groove 14 (projection dimension of the side wall piece 13) is substantially the same depth (substantially the same dimension) over the entire circumference. The mounting groove 14 is provided so that a substantially uniform gap is formed over the entire circumference between the groove bottom and the receiving portion 24 of the case body 20 in a state where the case 1 is assembled. .
In addition, a gap is formed between the side wall piece 13 that divides the inner wall of the groove facing the mounting target side of the mounting groove 14 and the receiving part 24 of the case body 20 in a state where the case 1 is assembled. The protruding dimensions are as follows. That is, the projecting dimension of the side wall piece 13 from the groove bottom is smaller than the projecting dimension from the groove bottom of the peripheral end portion of the lid main body 11 constituting the inner wall surface of the groove facing the anti-attachment target side. .

  In the state where the case 1 is assembled with the groove bottom of the upper side straight groove 15 provided linearly along the upper side part of the back cover 10 in the mounting groove 14, the upper plate-like part 25 of the case body 20. It arrange | positions so that the receiving part 24 may be opposed. Further, the groove bottoms of the side straight grooves 17 and 17 that are linearly provided along the both side portions of the back cover 10 in the mounting groove 14 are in a state where the case 1 is assembled. It arrange | positions so that the receiving part 24 of each side plate-shaped part 26 of the main body 20 may each be opposed. Further, the bottom of the case main body 20 in the state where the case 1 is assembled with the groove bottom of the lower side straight groove 18 linearly provided along the lower side of the back cover 10 in the mounting groove 14. It arrange | positions so that the receiving part 24 of the part 27 may be opposed.

Further, in the mounting groove 14, corners of the upper side straight groove 15 and the side straight grooves 17 and 17 on both sides thereof, and a corner of the lower side straight groove 18 and the side straight grooves 17 and 17 on both sides thereof, and The corner grooves 16, 16, 16, 16 serving as corner portions are formed in a projecting curved shape (R shape).
These corner grooves 16, 16, 16, 16 have a projecting curved surface and are opposed to the receiving portions 24 at the corners at the four corners on the inner peripheral side of the case body 20 in a state where the case 1 is assembled. To be arranged. The groove bottoms of the corner grooves 16, 16, 16, 16 are substantially concentric with the receiving portions 24 at the corners at the four corners on the inner peripheral side of the case body 20 when viewed in the assembling direction with the case 1 being assembled. It is provided to become. Moreover, the curvature radii of the groove bottoms of these corner grooves 16, 16, 16, 16 are substantially the same.
In the illustrated example, the front end surface in the protruding direction at the corner portion of the side wall piece 13 that defines the inner wall surface of the groove facing the mounting target side of the mounting groove 14 is substantially concentric with the groove bottom of the corner grooves 16, 16, 16, 16. The example which made the shape of the shape of the curved surface is shown. Further, in the illustrated example, the outer peripheral end surface at the corner portion of the peripheral end portion of the lid main body 11 that defines the inner wall surface of the mounting groove 14 facing the side opposite to the mounting target is from the groove bottom of the corner grooves 16, 16, 16, 16. Also shows an example of a curved surface shape having a small curvature radius.

Further, in the present embodiment, as shown in FIG. 2B, the engagement hole 19 is provided in the central portion of the mounting groove 14 along at least one side portion of the back cover 10, and according to the engagement hole 19. The engagement protrusion 39 is provided on the base portion 31 of the packing 30 to be described later so as to be in the same position. With such a configuration, when the case 1 is assembled, it is possible to suppress the floating of the base portion 31 at the central portion of the side portion that becomes a portion (straight portion) other than the corner portion that is particularly likely to float. The twist of 30 can be effectively suppressed.
In the present embodiment, an example is shown in which engagement holes 19 and 19 are provided in the center portions in the longitudinal direction of both side straight grooves 17 and 17 as mounting grooves 14 along at least one side of the back cover 10. ing.

  In the present embodiment, the mounting groove 14 and the packing 30 have a line-symmetric outer shape except for the engagement hole 19 and the engagement protrusion 39 when viewed in the assembly direction of the case 1. Further, the engagement projections 39 cannot be fitted into the engagement holes 19 in a state where the engagement holes 19 and the engagement projections 39 are reversed so that the packing 30 is on the opposite side around the axis of symmetry. Provided. With such a configuration, when the packing 30 is attached to the attachment groove 14, it is difficult to attach the packing 30 to the opposite side. Thereby, it can suppress that the fin part 32 of the packing 30 is attached in the state which faced the other side.

In the present embodiment, as shown in FIG. 2, the mounting groove 14 and the packing 30 are arranged in a vertical direction including the positions where the engagement holes 19 and the engagement protrusions 39 are provided when viewed in the assembly direction of the case 1. It has a line-symmetric (vertically symmetric) outline with the direction center line as the axis of symmetry. Further, in this embodiment, as shown in FIGS. 3B and 4C, the engagement hole 19 is provided so as to be offset toward one side in the groove width direction of the mounting groove 14. An engaging protrusion 39 is provided on the base portion 31 of the packing 30 so as to be positioned according to the engaging hole 19. With such a configuration, the mounting groove 14 and the packing 30 are viewed in the assembling direction of the case 1 and include the positions where the engagement holes 19 and the engagement protrusions 39 are provided. In this case, it is possible to make it difficult to attach the packing 30 to the opposite side.
In the present embodiment, the engagement hole 19 opened at the groove bottom of the attachment groove 14 is an example in which the engagement hole 19 is provided so as to be offset from the attachment target side of the case 1 in the groove width direction of the groove bottom of the attachment groove 14. Show. The position of the engagement hole 19 in the groove width direction may be an appropriate position so that the engagement protrusion 39 of the packing 30 that is opposite to the front and back sides cannot be fitted into the engagement hole 19.

Further, in the present embodiment, the engagement hole 19 is provided in the mounting groove 14 along one side portion of the back cover 10 so as to be shifted to one of the side portions adjacent to both sides of the side portion. An engaging protrusion 39 is provided on the base portion 31 of the packing 30 so as to be in a position corresponding to the engaging hole 19. Even in such a configuration, it is possible to make it difficult to attach the packing 30 to the opposite side as described above.
In the present embodiment, each of the upper side straight groove 15 and the lower side straight groove 18 of the mounting groove 14 is engaged so as to be offset from one of the side straight grooves 17, 17. The holes 19 and 19A are provided. That is, the engagement holes are formed in the upper side straight grooves 15 and the lower side straight grooves 18 so that the upper side straight grooves 15 and the lower side straight grooves 18 are shifted from the center in the longitudinal direction of the upper side straight grooves 15 to the one side straight grooves 17. 19 and 19A are provided. With such a configuration, the mounting groove 14 and the packing 30 are viewed in the assembling direction of the case 1, except for the engagement holes 19 and the engagement protrusions 39, and a line-symmetric (laterally symmetric) outline. Even in this case, it is difficult to attach the packing 30 by inverting the packing 30 upside down around the symmetry axis along the vertical direction. In the illustrated example, the engagement hole 19 of the upper side straight groove 15 and the engagement hole 19A of the lower side straight groove 18 are provided so as to coincide with each other when viewed in the vertical direction. You may make it provide these so that it may become a mutually different position seeing up and down.

In the present embodiment, the engagement holes 19 and 19A are provided so as to be slightly shifted from the central portions in the longitudinal direction of the upper side straight grooves 15 and the lower side straight grooves 18. The positions of the engagement holes 19 and 19A in the longitudinal direction of the groove may be appropriate positions from the viewpoint of suppressing mounting errors on the front and back of the packing 30.
That is, in this embodiment, the engagement holes 19, 19, 19, 19A are provided in the groove longitudinal direction central part of the four straight grooves 15, 17, 17, 18 on the four sides of the mounting groove 14 or in the vicinity of the groove longitudinal direction central part. It has a configuration.
These engagement holes 19, 19, 19, 19 A are substantially square holes when viewed in the depth direction, and are substantially the same size and shape (see FIG. 1). In the illustrated example, the engagement holes 19, 19, 19, 19 A have a substantially rectangular hole shape that is long in the groove longitudinal direction of the mounting groove 14. Further, the dimensions of the engagement holes 19, 19, 19, 19 A along the groove width direction of the attachment groove 14 are smaller than the groove width of the attachment groove 14.

Further, in the present embodiment, the engagement hole 19A provided in the lower straight groove 18 is replaced with the groove bottom piece 12 that defines the groove bottom of the mounting groove 14 as shown in FIGS. 1 and 3B. The engagement through hole 19A is provided so as to penetrate in the vertical direction. Further, the engagement holes 19, 19, 19 provided in portions other than the lower side straight groove 18, that is, the engagement holes 19, 19, provided in the upper side straight groove 15 and the both side straight grooves 17, 17, respectively. As shown in FIG. 3 (b), reference numeral 19 denotes a bottomed hole-shaped engaging recess 19, 19, 19. With such a configuration, even when water or the like adheres to the upper side or both sides when the case 1 is attached to the attachment target, the case 1 is inserted into the case 1 via the engagement recesses 19, 19, 19. It is possible to prevent water and the like from entering.
These engagement recesses 19, 19, 19 are provided at portions where the corresponding portions of the groove bottom piece portion 12 that partitions the groove bottom of the mounting groove 14 are projected toward the inner peripheral side.
Instead of such a mode, all of the engagement holes 19, 19, 19, 19A may be formed as engagement recesses or engagement through holes.

Further, in the illustrated example, a screw insertion hole through which a screw to be screwed into a female screw hole provided in the case main body 20 is provided at an appropriate position on the inner peripheral side of the mounting groove 14 of the back cover 10 is shown. ing.
In addition, the back cover 10 and the case main body 20 are not restricted to the aspect assembled with a screw. For example, the back cover 10 and the case main body 20 may be provided with a locking portion, a hook-and-loop fastener, and the like that are detachably locked with each other.
Further, a battery cover or the like for replacing a battery serving as a driving power source for the electronic device or the like housed in the case 1 may be provided at a suitable position on the inner peripheral side of the mounting groove 14 of the back cover 10. .
The back cover 10 and the case main body 20 may be formed of a metal material, a hard synthetic resin material, or the like.

As shown in FIGS. 2 and 3, the packing 30 is configured to be attached to the back cover 10 by fitting the base portion 31 into the mounting groove 14.
In the present embodiment, the packing 30 has a ring shape (annular shape) made of one member, as shown in FIG. That is, the packing 30 is provided over the entire circumference of the mounting groove 14 without a joint or interruption. With such a configuration, the sealing performance by the packing 30 can be improved over the entire circumference of the case body 20 and the back cover 10 in the circumferential direction.
The packing 30 has an outer shape corresponding to the mounting groove 14 when viewed in the assembly direction of the case 1. That is, the packing 30 has four sides of straight portions 35, 37, 37, 38 (upper side straight portions 35, both side straight portions 37, which are fitted into the respective straight grooves 15, 17, 17, 18 on the four sides of the mounting groove 14. , 37 and the lower side straight part 38). Further, the packing 30 includes corner portions 36, 36, 36, 36 that are fitted into the corner grooves 16, 16, 16, 16 at the four corners of the mounting groove 14.

The length dimension along the circumferential direction of the four straight portions 35, 37, 37, 38 of the packing 30 depends on the groove length of each of the straight grooves 15, 17, 17, 18 on the four sides of the mounting groove 14. It is a dimension. The dimension along the circumferential direction of these four linear portions 35, 37, 37, 38 may be the same as the length of each of the linear grooves 15, 17, 17, 18 on the four sides of the mounting groove 14, or each linear groove. It is good also as a dimension slightly smaller than the groove length of 15, 17, 17, 18.
Further, the dimension along the circumferential direction of the corner portions 36, 36, 36, 36 of the packing 30 is a dimension according to the dimension along the circumferential direction of the corner grooves 16, 16, 16, 16 of the mounting groove 14. The radius of curvature of the inner peripheral surface that is the surface of the corner portion 36, 36, 36, 36 of the packing 30 that comes into contact with the bottom of the mounting groove 14 of the base portion 31 is set to the corner groove 16, 16, It is good also as a diameter according to the curvature radius of the groove bottom of 16,16. The curvature radius of the inner peripheral surface of the base portion 31 of each corner portion 36 of the packing 30 may be the same as the curvature radius of the groove bottom of each corner groove 16 of the mounting groove 14 or each corner groove of the mounting groove 14. It is good also as a diameter slightly smaller than the curvature radius of 16 groove bottoms.

As shown in FIG. 3, the base portion 31 of the packing 30 has a strip shape along the thickness direction in the groove depth direction of the mounting groove 14. The thickness dimension of the base portion 31 (thickness dimension other than the portion where the engagement protrusion 39 is provided) is smaller than the groove depth of the mounting groove 14. Further, the width dimension of the base portion 31 (the dimension along the groove width direction of the mounting groove 14) may be an appropriate dimension so that it can be fitted into the mounting groove 14. In the example shown in the drawing, the width of the base portion 31 is slightly smaller than the width of the mounting groove 14.
Further, the base portion 31 has a substantially uniform cross-sectional shape over the entire circumference except for a portion where the engagement protrusion 39 is provided. In the illustrated example, the cross-sectional shape of the base portion 31 is a substantially rectangular shape that is long in the groove width direction of the mounting groove 14.

An engagement protrusion 39 is provided so as to protrude from a surface (inner peripheral surface) facing the inner peripheral side of the base portion 31.
In the present embodiment, the four engagement protrusions 39 are spaced apart in the circumferential direction so as to be positioned according to the engagement holes 19, 19, 19, 19 A provided in the mounting groove 14 of the back cover 10. , 39, 39, 39 are provided.
That is, the engagement protrusions 39 are provided at the longitudinal center portions of the side linear portions 37 of the packing 30. The engaging projections 39, 39 of the both side straight portions 37, 37 are fitted into the engaging holes 19, 19 of the both side straight grooves 17, 17 of the mounting groove 14, respectively.
Further, the engagement protrusions 39, 39 are positioned so as to be offset from one of the side linear portions 37, 37 on the upper linear portion 35 and the lower linear portion 38 of the packing 30. It is set as the structure which provided. The engagement protrusions 39 and 39 of the upper side straight part 35 and the lower side straight part 38 are fitted into the engagement holes 19 and 19A of the upper side straight groove 15 and the lower side straight groove 18 of the mounting groove 14, respectively.

Further, as shown in FIGS. 3B and 4C, these engaging protrusions 39, 39, 39, 39 are provided so as to be offset to one side in the width direction of the base portion 31. ing. That is, an example is shown in which each engagement protrusion 39 is provided so as to be offset from the attachment target side of the case 1 on the inner peripheral surface of the base portion 31 in correspondence with each engagement hole 19.
The engaging protrusions 39, 39, 39, 39 are substantially the same size and shape. Further, the engaging protrusions 39, 39, 39, 39 are formed in a protruding piece shape along the thickness direction in the assembling direction of the case 1. In the illustrated example, the thickness of the engagement protrusions 39, 39, 39, 39 is larger than the thickness of the base portion 31. Further, in the illustrated example, an example in which the projecting direction tip side portions of the engaging protrusions 39, 39, 39, 39 are formed in a projecting curved surface shape when viewed in the thickness direction is shown.
The dimension, thickness dimension, and protrusion dimension along the circumferential direction of these engagement protrusions 39, 39, 39, 39 are the dimension along the circumferential direction of the engagement holes 19, 19, 19, 19A, the dimension along the groove width direction, It is a dimension according to the depth dimension. The dimensions, thickness dimensions, and projecting dimensions along the circumferential direction of the engagement protrusions 39, 39, 39, 39 are the viewpoints for suppressing the positional displacement of the packing 30 in the circumferential direction, the floating and twisting of the base portion 31, and the like. It is good also as an appropriate dimension from these.

The fin part 32 is provided so that it may protrude toward the outer peripheral side from the anti-attachment object side edge part used as the width direction one side edge part of the base part 31. As shown in FIG. The projecting dimension of the fin part 32 may be an appropriate dimension so as to come into contact with the receiving part 24 of the case body 20 with elastic deformation in a state where the case 1 is assembled. In the example shown in the figure, the projecting dimension of the fin portion 32 is approximately the same as the width dimension of the base portion 31.
Further, the fin portion 32 is inclined so that the tip end portion is located closer to the attachment object than the base portions 33 and 34. That is, this fin part 32 is made into the shape which inclines in a taper-shaped taper shape as the fin part 32 goes to the anti-attachment object side in the natural state. The inclination angle of the fin portion 32 with respect to the base portion 31 in the natural state (inclination angle of the front side portion) may be an appropriate angle from the viewpoint of adhesion to the receiving portion 24 of the case body 20, for example, 30 degrees. It may be about ˜80 degrees, and in the illustrated example, an example of about 60 degrees is shown.

  In the present embodiment, the thickness of the base 34 of the fin portion 32 in the corner groove 16 as the corner portion of the mounting groove 14 is larger than the thickness of the front portion of the fin portion 32. With such a configuration, the front portion of the fin portion 32 in the corner groove 16 can be easily elastically deformed, and the rigidity of the base portion 34 can be increased, and the fin portion 32 in the corner groove 16 is effectively tilted. Can be suppressed. Further, the case main body with respect to the back cover 10 is formed so that the base portion 33 of the fin portion 32 in the portions 15, 17, 17, 18 other than the corner portion of the mounting groove 14 is thinner than the base portion 34 of the fin portion 32 in the corner groove 16. A concave portion 33a that opens toward the 20 assembling direction front side (attachment target side) is provided. If it is set as such a structure, the fin part 32 of parts other than a corner part can be made to be more elastically deformed to an appropriate direction.

  The tip portion of the fin portion 32 excluding the base portions 33 and 34 has a substantially uniform cross-sectional shape over the entire circumference of the packing 30 as shown in FIGS. In the example shown in the figure, the tip portion of the fin portion 32 excluding the base portions 33 and 34 is tapered toward the tip side. In addition, it may replace with such an aspect and you may make the tip side site | part except the bases 33 and 34 of the fin part 32 into uniform thickness over the whole protrusion direction. Further, in the illustrated example, the tip surface of the fin portion 32 is shown as a substantially flat surface that is orthogonal to the inclined surface facing the anti-attachment target side that is one surface in the thickness direction of the fin portion 32. Alternatively, it may have a curved surface shape.

As shown in FIG. 4B, the corner fin base 34 as the base of the fin portion 32 of each corner portion 36, 36, 36, 36 is a base side end that is the thickest portion of the tip portion of the fin portion 32. It is provided so as to continue to the part. In addition, each corner fin base 34 is provided so as to be thicker than the base side end of the tip portion of the fin 32. In the illustrated example, an example in which the corner fin base 34 is provided so that the inclination angle with respect to the base portion 31 of the inclined surface facing the mounting target side that is the other surface in the thickness direction of the fin portion 32 is larger than that of the front portion. ing.
Each corner fin base portion 34 has a substantially uniform cross-sectional shape over the entire circumferential direction of each corner portion 36, 36, 36, 36. 4B shows a cross section of one corner portion 36 of the four corner portions 36, 36, 36, 36 of the packing 30, the same applies to the other corner portions 36, 36, 36. It is the cross-sectional shape.

As shown in FIG. 4C, the straight fin base 33 serving as the base of the fin portion 32 of each straight portion 35, 37, 37, 38 is a base side end that is the thickest portion of the tip portion of the fin portion 32. It is provided so as to continue to the part. In addition, each straight fin base portion 33 is provided so as to have a smaller thickness than the base side end portion of the front portion of the fin portion 32. In the illustrated example, a concave portion 33a is provided on the other side in the thickness direction of each linear fin base portion 33 so that the other surface in the thickness direction of each linear fin base portion 33 has a concave curved surface shape. The concave portion 33 a is provided in the shape of a concave groove so as to extend over the entire length of each linear fin base portion 33.
Further, each linear fin base 33 has a substantially uniform cross-sectional shape over the entire circumferential direction (longitudinal direction) of each linear portion 35, 37, 37, 38. 3 and 4, the cross sections of the upper side straight portion 35 and the lower side straight portion 38 of the packing 30 are illustrated, but the side straight portions 37 and 37 have the same cross sectional shape.

The surfaces of the corner fin base portion 34 and the straight fin base portion 33 that face one side in the thickness direction and that are opposite to the attachment target side are formed in a series. In the example of the figure, the surface facing the anti-attachment target side of the corner fin base portion 34 and the straight fin base portion 33 is shown as a projecting curved surface shape.
In addition, as an aspect which makes the thickness of the corner fin base part 34 larger than the thickness of the linear fin base part 33 as a base part of the fin part 32 of another site | part, it is not restricted to the above aspects. For example, a mode in which concave portions are provided on both sides in the thickness direction of the linear fin base portion 33 or the thickness of the linear fin base portion 33 may be the same as the base side end portion of the front portion of the fin portion 32 may be used. . Moreover, you may make it the aspect which provided the protruding step part which protrudes in a thickness direction in the thickness direction one side or both sides of the corner fin base part 34. FIG. In addition, it is good also as various aspects.

Further, the thickness of the corner fin base 34 and the straight fin base 33 may be an appropriate thickness from the viewpoint of elastic deformability at the straight portions 35, 37, 37, 38, or from the viewpoint of suppressing the collapse at the corner portion 36. Good. For example, the thickness of each corner fin base 34 may be about 1.1 to 3 times the thickness of each linear fin base 33, and the example shown in the figure is about 1.5 times.
Moreover, the dimension along the protrusion direction of the said fin part 32 of the corner fin base part 34 and the linear fin base part 33 is good also as an appropriate dimension from a viewpoint similar to the above. For example, the dimension along the projecting direction of the fin part 32 of the corner fin base 34 and the straight fin base 33 may be less than ½ of the projecting dimension of the fin part 32 itself, and preferably 1/10 to 1 It may be set to about / 3, and in the illustrated example, an example in which all are set to about 1/4 is shown.

Further, the packing 30 may be attached only by fitting the base portion 31 into the attachment groove 14 of the back cover 10 or may be attached using an adhesive material, an adhesive, or the like.
The packing 30 may be formed of a soft synthetic resin material, rubber, various elastomer materials, or the like.

Next, another embodiment according to the present invention will be described with reference to the drawings.
Drawing 5 is a figure showing typically an example of back cover 10A and packing 30A as the 1st case with which the case concerning a 2nd embodiment is provided.
Note that differences from the first embodiment will be mainly described, and the same components will be denoted by the same reference numerals, and description thereof will be omitted or briefly described.

In the present embodiment, the configurations of the back cover 10A and the packing 30A are mainly different from those of the first embodiment.
In this embodiment, as shown in FIG. 5A, the mounting groove of the back cover 10A is formed at the boundary between the corner portion 36 of the packing 30A and the portions 35A, 37A (37A, 38A) on both sides of the corner portion 36. 14 is provided with engagement protrusions 39, 39 that can be fitted into the engagement holes 19, 19 (19, 19A). With such a configuration, the circumferential displacement of the packing 30A with respect to the mounting groove 14 can be effectively suppressed. Further, since the engagement protrusions 39 are provided at the boundary portions on both sides of the corner portion 36, the tensile force acting on the corner portion 36 of the packing 30A can be reduced, and the fin portion 32 in the corner portion 36 falls down. Can be more effectively suppressed.

  Also in the present embodiment, the packing 30A has an annular shape (ring shape) having corner portions 36, 36, 36, 36 and straight portions 35A, 37A, 37A, 38A, as in the first embodiment. . Further, the engaging projections 39 are provided at the boundary portions on both sides of each of the corner portions 36, 36, 36, 36. Further, the engagement holes 19 and 19 (in the boundary portions on both sides of each corner groove 16 of the mounting groove 14 of the back cover 10A so that the positions correspond to the respective engagement protrusions 39 provided on the packing 30A. 19, 19A). With such a configuration, the dimensions along the circumferential direction of the corner portions 36, 36, 36, 36 of the packing 30A and the dimensions along the circumferential direction of the straight portions 35A, 37A, 37A, 38A can be respectively defined. it can. For example, the dimension along the circumferential direction of each corner portion 36 of the packing 30A is the same as the dimension along the circumferential direction of each corner groove 16 of the mounting groove 14 of the back cover 10A. Further, the dimension along the circumferential direction of the linear portions 35A, 37A, 37A, and 38A of the packing 30A is shorter than the dimension along the circumferential direction of the linear grooves 15A, 17A, 17A, and 18A of the mounting groove 14 of the back cover 10A. You can. With such a configuration, the collapse of the fin portion 32 at the corner portion 36 can be more effectively suppressed while the packing 30A can be firmly attached to the attachment groove 14 of the back cover 10A.

In the present embodiment, the mounting groove 14 and the packing 30A of the back cover 10A are viewed in the assembly direction of the case 1 and include the positions where the engagement holes 19 (19A) and the engagement protrusions 39 are provided. A line-symmetrical outline with the vertical centerline as the axis of symmetry and a line-symmetrical outline with the horizontal centerline as the axis of symmetry. Further, similarly to the above, each engagement hole 19 (19A) is provided so as to be shifted to one side in the groove width direction of the mounting groove 14 so as to be a position corresponding to each engagement hole 19 (19A). An engaging protrusion 39 may be provided on the surface.
In addition, although the example of illustration has shown the example which provided the engagement protrusions 39 and 39 in each of the longitudinal direction both ends of linear part 35A, 37A, 37A, 38A of four sides, it is not restricted to such an aspect. For example, instead of such a mode, engagement protrusions 39 and 39 are provided on both ends of the corner portion 36 in the circumferential direction, or straddle between the straight portions 35A, 37A, 37A, and 38A and the corner portions 36, respectively. An engaging protrusion 39 may be provided on the surface.

Next, still another embodiment according to the present invention will be described with reference to the drawings.
Drawing 6 is a figure showing typically an example of back cover 10B and packing 30B as the 1st case with which the case concerning a 3rd embodiment is provided.
Note that differences from the first embodiment will be mainly described, and the same components will be denoted by the same reference numerals, and description thereof will be omitted or briefly described.

In the present embodiment, the configurations of the back cover 10B and the packing 30B are mainly different from those of the first embodiment.
In the present embodiment, as shown in FIG. 6 (b), both side straight grooves 17, 17 as attachment portions along both side portions excluding the upper side straight groove 15B as attachment portions along the upper side portion of the back cover 10B, and The engagement holes 19, 19, 19 A are provided in each of the lower side straight grooves 18 B as attachment portions along the lower side. Further, engagement protrusions 39, 39, 39 are provided on the base portion 31 of the packing 30B so as to be in positions corresponding to the engagement holes 19, 19, 19A. That is, the engagement hole is not provided in the upper side straight groove 15B as the attachment part along the upper side part of the back cover 10B, and the engagement protrusion is not provided in the upper side straight part 35B of the packing 30B. For example, when an engagement hole is provided in the upper side straight groove 15B as an attachment part along the upper side part of the back cover 10B, if dust or water accumulates in the engagement hole or a through hole is formed, It is conceivable that water may enter the water. According to the above configuration, this can be suppressed. Moreover, the float of the base part 31 in the both sides | sides and lower side part of the back cover 10B can be suppressed, and the twist of packing 30B can be suppressed effectively.

Similarly to the first embodiment, the engagement holes 19 and 19 are provided in the center portions in the longitudinal direction of the both side straight grooves 17 and 17 of the back cover 10B, and the side straight portions 37 and 37 of the packing 30B are provided. It is set as the structure which provided the engagement protrusions 39 and 39 in each of the center part of a longitudinal direction.
In the present embodiment, the engagement hole 19A is provided at the central portion in the longitudinal direction of the lower side straight groove 18B of the back cover 10B, and the engagement protrusion 39 is provided at the central portion in the longitudinal direction of the lower side straight portion 38B of the packing 30B. It is said.
In the present embodiment, the mounting groove 14 and the packing 30B of the back cover 10B are seen in the assembly direction of the case 1, and include the positions where the engagement holes 19 (19A) and the engagement protrusions 39 are provided. A line-symmetric outline with the center line in the left-right direction as the axis of symmetry. Further, similarly to the above, each engagement hole 19 (19A) is provided so as to be shifted to one side in the groove width direction of the mounting groove 14 so as to be a position corresponding to each engagement hole 19 (19A). An engaging protrusion 39 may be provided on the surface.

Next, still another embodiment according to the present invention will be described with reference to the drawings.
FIG. 7 is a diagram schematically illustrating an example of the back cover 10 </ b> C and the packing 30 </ b> C as a first case included in the case according to the fourth embodiment.
Note that differences from the first embodiment will be mainly described, and the same components will be denoted by the same reference numerals, and description thereof will be omitted or briefly described.

In the present embodiment, the configurations of the back cover 10C and the packing 30C are mainly different from those of the first embodiment.
In the present embodiment, as shown in FIGS. 7A and 7B, the lower straight groove 18 </ b> C as a mounting portion along at least one side of the back cover 10 </ b> C is spaced in the longitudinal direction of the lower straight groove 18 </ b> C. And a plurality of (three in the illustrated example) engagement holes 19A, 19A, 19A are provided. In the illustrated example, an engagement hole 19A is provided at the longitudinal center of the lower straight groove 18C of the back cover 10C, and engagement holes 19A, 19A are provided at equal intervals on both sides of the center engagement hole 19A. An example is shown. Further, an example is shown in which each of the engagement holes 19A, 19A on both sides is provided at the center in the longitudinal direction of each half on both sides in the longitudinal direction of the lower straight groove 18C. Further, a plurality (three in the illustrated example) of engagement protrusions 39, 3 are formed on the base portion 31 of the lower side straight portion 38C of the packing 30C so that the positions correspond to the respective engagement holes 19A, 19A, 19A. 39 and 39 are provided. With such a configuration, it is possible to effectively suppress the floating of the base portion 31 on the lower side when the case 1 is assembled.

Also in this embodiment, the mounting groove 14 and the packing 30C of the back cover 10C are seen in the assembly direction of the case 1, and include the positions where the engagement holes 19A and the engagement protrusions 39 are provided. It has a line-symmetric outline with the direction center line as the axis of symmetry. Similarly to the above, each engagement hole 19A is provided so as to be shifted to one side of the mounting groove 14 in the groove width direction, and the engagement protrusion 39 is provided so as to be a position corresponding to each engagement hole 19A. You may make it provide.
In the present embodiment, an example in which a plurality of engagement holes 19A are provided only in the lower straight groove 18C of the back cover 10C is shown, but the present invention is not limited to such an embodiment. A mode in which a plurality of or single engagement holes 19 are provided in any one of the linear grooves 15B, 17B, and 17B as an attachment portion along the other side portion of the back cover 10C instead of or in addition to such a mode. It is good.

Further, different configurations of the back cover 10, 10A, 10B, 10C and the packing 30, 30A, 30B, 30C as the first case described in the above embodiments are applied by appropriately combining or recombining them. It may be. In this case, you may make it deform | transform suitably as needed.
Further, the positions, the number, and the shapes of the engagement holes 19 (19A) of the back lids 10, 10A, 10B, and 10C and the engagement protrusions 39 of the packings 30, 30A, 30B, and 30C are not limited to the above-described examples. Deformation is possible. Furthermore, such engagement holes 19 (19A) and engagement protrusions 39 may not be provided in the back cover 10, 10A, 10B, 10C and the packings 30, 30A, 30B, 30C.

In each of the above embodiments, the fin portions 32 of the packings 30, 30 </ b> A, 30 </ b> B, and 30 </ b> C are shown in an inclined shape, but may be shaped so as to rise perpendicular to the base portion 31.
Moreover, in each said embodiment, although the packing 30,30A, 30B, 30C was shown as the ring shape, it is good also as what was parted in the circumferential direction. Furthermore, it is not restricted to what is provided over the perimeter of the circumferential direction of back cover 10, 10A, 10B, 10C, It is good also as what is provided only in a part. In these cases, the packing is not limited to the packing having the corner portions corresponding to the corner grooves 16 of the back covers 10, 10A, 10B, and 10C in a natural state, but is linear in the natural state, and the back covers 10, 10A, and 10B. , 10C may be a packing attached so as to be along the mounting groove 14 of 10C.
In each of the above embodiments, the mounting portion to which the base portion 31 of the packing 30, 30 </ b> A, 30 </ b> B, 30 </ b> C is attached is a concave mounting groove so that the movement of the base portion 31 to both sides in the width direction can be suppressed. However, the present invention is not limited to such an embodiment. For example, the mounting portion may be a mounting portion provided with a wall portion that suppresses only the movement of the base portion 31 to one side in the width direction, or may be a substantially flat surface mounting portion. Various other modifications are possible.

Moreover, in each said embodiment, although the case 1 showed the example used as the wall surface installation type attached to the wall surface as attachment object, it is not restricted to such an aspect, What may be attached to various attachment object may be sufficient. Alternatively, it may be placed or the like.
Further, in each of the above embodiments, the case 1 is shown as an example of a substantially rectangular shape (in the illustrated example, a generally rectangular shape) when viewed in the assembling direction. However, the case 1 has a square shape or other regular polygonal shape. Or may be another polygonal shape. In addition, various shapes may be used.
Moreover, in each said embodiment, although the site | parts other than the corner part used as the corner part of case main body 20 and case back 10,10A, 10B, 10C of case 1 are shown in the linear form, It is not restricted to an aspect. For example, a portion other than the corner portion may have a curved shape (arc shape) that is gentler than the corner portion. That is, the thickness of the base portion 34 of the fin portion 32 in the portion where the curvature radius of the packing 30, 30A, 30B, 30C is small is set to be larger than the thickness of the base portion 33 of the fin portion 32 in the portion where the curvature radius is larger than this. Also good.

Moreover, in each said embodiment, although the case body 20 of case 1 and the corner part used as the corner part of back cover 10, 10A, 10B, 10C were shown in the curved shape, it shows in the assembly direction of case 1. As seen, it may be a C chamfered shape, a multi-chamfered shape, or a substantially orthogonal corner. In this case, the packings 30, 30 </ b> A, 30 </ b> B, and 30 </ b> C may be appropriately modified as necessary.
Moreover, in each said embodiment, although the 1st case was made into substantially plate-shaped back cover 10, 10A, 10B, 10C, and the 2nd case was shown as the thin box shape opened to one side, It is not restricted to such an aspect. For example, the first case may be a front cover that covers the front side, the first case may be a thin box shape that opens in one side, the second case may be a substantially plate shape, and both may be a thin box shape. May be. Moreover, it may replace with the aspect which made case 1 itself into the shape of a thin box, and it is good also as a cylinder shape comparatively large in an assembly direction. Various other modifications are possible for the first case and the second case constituting the case 1.

1 Case 10, 10A, 10B, 10C Back cover (first case)
14 Mounting groove (Mounting part)
19 Engaging recess (engaging hole)
19A engagement through hole (engagement hole)
20 Case body (second case)
24 receiving part 30, 30A, 30B, 30C packing 31 base part 32 fin part 33 linear fin base (base part of fin part in parts other than a corner part)
33a Concave part 34 Corner fin base (base of fin part in corner part)
39 Engagement protrusion

Claims (3)

A first case having a mounting portion on the outer peripheral side, a second case having a receiving portion on the inner peripheral side arranged to face the mounting portion of the first case, and a mounting portion of the first case A packing that is integrally provided with a fin portion that comes into contact with the receiving portion of the second case with elastic deformation on the base portion to be attached;
In the packing, the thickness of the base portion of the fin portion in the corner portion which becomes the corner portion of the first case and the second case is the thickness of the base portion of the fin portion in the portion other than the corner portion of the first case and the second case. It is said that it is larger than the thickness ,
The fin portion of the packing is shaped to be inclined so as to be separated from the attachment portion as it goes toward the assembly direction of the second case with respect to the first case, and the base portion of the fin portion at a portion other than the corner portion Further, the case is characterized in that a recess is provided that opens toward the assembling direction side of the second case with respect to the first case so as to be thinner than the base of the fin portion of the corner portion . In claim 1,
Case, characterized in that is larger than the thickness of the base of the fin portion, the front side portion of the fin portion thickness at the corner portion. In claim 1 or 2 ,
A case characterized in that an engagement protrusion that is fitted into an engagement hole provided in the attachment portion of the first case is provided at a boundary portion between the corner portion of the packing and portions on both sides of the corner portion. .

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