JP5397058B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device.

2. Description of the Related Art Conventionally, in an electronic device having waterproof performance, a pair of cases and an annular waterproof packing interposed between the pair of cases are provided. In addition, the electronic device is provided with a fixing screw that holds the pair of cases so as to contract the waterproof packing so as to maintain waterproofness (see, for example, Patent Document 1).
Furthermore, in order to ensure a stronger waterproof property, it is desired to uniformly shrink the waterproof packing over the entire circumference of the waterproof packing. For this reason, a plurality of fixing screws are installed around the waterproof packing at predetermined intervals, and a pair of cases are locked by these fixing screws, so that the waterproof packing can be evenly shrunk over the entire circumference. Equipment has also been developed.

JP-A-8-130382

Here, fixing screw mounting holes and bosses have to be formed at the installation locations of the fixing screws in the pair of cases, which leads to design limitations. In particular, as described above, when a plurality of fixing screws are installed over the entire circumference of the waterproof packing, it is actually the case that restrictions on the design become large.
For this reason, the subject of this invention is providing the electronic device which can raise the freedom degree of a design by aiming at the reduction of the installation number of a fixing screw, maintaining high waterproofness.

The electronic device according to the invention of claim 1 is:
A first case having a first wall formed over the entire circumference;
A second case in which a second wall part contacting the first wall part of the first case is formed over the entire circumference;
A plate-shaped locking member that locks the first case and the second case by engaging the outer surface of the first wall portion and the outer surface of the second wall portion,
The locking member has a pair of claw portions extending substantially in parallel toward the outside, and at least one hole portion formed along the extending direction of the claw portion,
The hole portion has a width in a direction perpendicular to the extending direction of the claw portion, which becomes a widened wide portion at a portion close to the claw portion, and a narrow width portion narrower than the widened portion at a portion far from the claw portion, It is
The locking member is attached to the outer surface of the first wall portion and the outer surface of the second wall portion, and is formed integrally with the first wall portion and the second wall portion, respectively, and overlaps with each other. An engagement protrusion that engages with the hole and a convex portion that enters between the pair of claw portions are formed,
The width of the engagement protrusion is set to be smaller than the widened portion of the hole and larger than the narrow width portion of the hole,
The width of the convex part is formed larger than the interval between the pair of claw parts.

The invention according to claim 2 is the electronic device according to claim 1,
The distance between the pair of claws is gradually narrowed from the tip to the back.

The invention according to claim 3 is the electronic device according to claim 1 or 2,
The pair of claw portions has a step shape with respect to the extending direction.

Invention of Claim 4 is an electronic device as described in any one of Claims 1-3,
A waterproof packing is interposed between the first wall portion of the first case and the second wall portion of the second case over the entire circumference.

  According to the present invention, the degree of freedom in design can be increased by reducing the number of fixing screws installed while maintaining high waterproofness.

It is explanatory drawing which shows schematic structure of the camera which is one form of the electronic device which concerns on this invention, (a) is a front view, (b) is a bottom view, (c) is a side view. It is a disassembled perspective view which shows schematic structure of the camera of FIG. It is explanatory drawing which shows one form of the securing member with which the camera of FIG. 1 is equipped, (a) is a perspective view, (b) is a front view, (c) is a side view. It is explanatory drawing which shows one form of the securing member with which the camera of FIG. 1 is equipped, (a) is a perspective view, (b) is a front view, (c) is a side view. FIG. 4 is an explanatory view showing an engagement relationship between an engaged portion provided in the camera of FIG. 1 and a locking member shown in FIG. 3, (a) is a side view showing a state immediately before engagement, and (b) is an engagement. It is a side view which shows the state at the time. FIG. 5 is an explanatory diagram showing an engagement relationship between an engaged portion provided in the camera of FIG. 1 and a locking member shown in FIG. 4, (a) is a side view showing a state immediately before engagement, and (b) is an engagement. It is a side view which shows the state at the time. It is explanatory drawing which shows the state of the waterproof packing with which the camera of FIG. 1 is equipped, (a) is sectional drawing seen from the VIIa-VIIa cutting line in FIG. 1, (b) was seen from the VIIb-VIIb cutting line in FIG. Sectional view, (c) is a sectional view taken along line VIIc-VIIc in FIG. 1, (d) is a sectional view taken along line VIId-VIId in FIG. 1, and (e) is a sectional view taken along line VIIe-VIIe in FIG. FIG. 5F is a cross-sectional view taken along the line VIIf-VIIf in FIG. 1. It is a disassembled perspective view which shows schematic structure of the case and exterior panel with which the camera of FIG. 1 is equipped. It is explanatory drawing which shows the external appearance of the camera with which the exterior panel of FIG. 8 was attached, (a) is a front view, (b) is a bottom view, (c) is a side view. It is a side view which shows the state just before the panel fixing member shown in FIG. 8 is attached to a back panel. It is explanatory drawing which shows a state with which the panel fixing member of FIG. 10 was attached to the back panel, (a) Front view, (b) is a bottom view, (c) is a side view. It is explanatory drawing which shows the modification of the latching member of this embodiment, (a) is a front view which shows a 1st modification, (b) is a front view which shows a 2nd modification, (c) is a 3rd modification. The front view which shows an example, (d) is a front view which shows a 4th modification.

  The best mode for carrying out the present invention will be described below with reference to the drawings. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

  1A and 1B are explanatory views showing a schematic configuration of a camera which is an embodiment of an electronic apparatus according to the present invention, where FIG. 1A is a front view, FIG. 1B is a bottom view, and FIG. 1C is a side view. FIG. 2 is an exploded perspective view showing a schematic configuration of the camera of FIG. In the present embodiment, a camera will be described as an example of an electronic device. However, the configuration of the present invention is not limited to a camera. For example, a mobile phone, a mobile TV, a notebook computer, a PDA, and the like Is mentioned.

  As shown in FIGS. 1 and 2, the camera 1 has a case 3 having a substantially rectangular shape in front view that accommodates a lens unit 2, a display panel (not shown), circuit components, and the like. The case 3 includes a first case 10 located on the front side and a second case 20 located on the back side. A first wall portion 11 is formed in the first case 10 over the entire circumference. On the other hand, the second case 20 is formed with a second wall portion 21 in contact with the first wall portion 11 over the entire circumference. And between the 1st wall part 11 and the 2nd wall part 21, the cyclic | annular waterproof packing 4 is interposing over the perimeter.

  Here, in the case 3, in order to fix the first case 10 and the second case 20, a part is fixed by a screw with a fixing screw 5, and the other part is locked by a plate-shaped locking member 6. Has been. For this reason, in each of the first wall portion 11 and the second wall portion 21, a screw hole 51 and a through hole 52 that communicates with the screw hole 51 are formed at locations to be screwed. On the other hand, an engaged portion 70 is formed on each of the outer surfaces 12 and 22 of the first wall portion 11 and the second wall portion 21 at the attachment location of the locking member 6.

  In the present embodiment, two locations are provided on one short side portion 14, 24 in the first case 10 and the second case 20, one location is provided on one long side portion 15, 25, and an attachment location of the locking member 6 is provided. An example will be described in which the other short sides 16 and 26 are provided with two locations, and the other long sides 17 and 27 are provided with one location and a screwing location. Of course, the mounting location of the locking member 6 and the installation location of the screwing location are not limited thereto. Note that the locking member 6A used in one short side portion 14 and 24 and the locking member 6B used in one long side portion 15 and 25 have different shapes. Hereinafter, each of the locking members 6A and 6B will be described.

  3A and 3B are explanatory views showing a schematic configuration of the locking member 6A. FIG. 3A is a perspective view, FIG. 3B is a front view, and FIG. 3C is a side view. As shown in FIG. 3, the locking member 6A includes a main body portion 61a, a pair of claw portions 62a extending substantially parallel to the outside with respect to the main body portion 61a, a main body portion 61a, and a pair of claw portions 62a. And a connecting portion 63a for connecting the two. A pair of notches 64a is formed in the connecting portion 63a, whereby the width of the connecting portion 63a is narrower than the width of the main body portion 61a. The main body 61a has a hole 65a formed along the extending direction of the claw 62a.

  4A and 4B are explanatory views showing a schematic configuration of the locking member 6B. FIG. 4A is a perspective view, FIG. 4B is a front view, and FIG. 4C is a side view. As shown in FIG. 4, the locking member 6B includes a main body portion 61b and a pair of claw portions 62b extending substantially parallel to the outer side with respect to the main body portion 61b. The main body 61b has a hole 65b formed along the extending direction of the claw 62b. A pair of screw holes 63b are formed at the ends of the main body 61b opposite to the pair of claws 62b.

  As shown in FIGS. 3 and 4, in any of the holes 65a and 65b of the locking members 6A and 6B, the extending direction of the claw portions 62a and 62b (in FIGS. 3B and 4B). The width in the direction orthogonal to the X direction (the Y direction shown in FIGS. 3B and 4B) becomes the widened portions 66a and 66b which are wide at the portions close to the claw portions 62a and 62b, and the claw portion 62a. , 62b are narrow portions 67a, 67b narrower than the wide portions 66a, 66b. Tapered portions 68a and 68b that smoothly connect the wide portions 66a and 66b to the narrow portions 67a and 67b are provided between the wide portions 66a and 66b and the narrow portions 67a and 67b.

  In addition, the pair of claw portions 62a and 62b are flush with the main body portions 61a and 61b at portions close to the main body portions 61a and 61b. On the other hand, the tip portions 69a and 69b of the pair of claw portions 62a and 62b are parallel to the main body portions 61a and 61b. Thereby, a pair of nail | claw part 62a, 62b becomes a level | step difference shape with respect to the extending direction.

  Next, the engaged portion 70 will be described. In the engaged portion 70, an engaged portion 70A in which the locking member 6A is locked and an engaged portion 70B in which the locking member 6B is locked are respectively corresponding locking members 6A and 6B. It has a different shape so that only can be engaged. Hereinafter, each engaged portion 70A, 70B will be described.

  5A and 5B are explanatory views showing the engagement relationship between the engaged portion 70A and the locking member 6A. FIG. 5A is a side view showing a state immediately before the engagement, and FIG. 5B is a state at the time of engagement. FIG. As shown in FIG. 5, a pair of engaged portions 70 </ b> A are provided on the outer side surfaces 12 and 22 of one short side portion 14 and 24 of the first case 10 and the second case 20. The engaged portion 70A has an engaging protrusion 71a that engages with the hole 65a of the locking member 6A, and a convex portion 72a that enters between the pair of claw portions 62a.

  6A and 6B are explanatory views showing the engagement relationship between the engaged portion 70B and the locking member 6B. FIG. 6A is a side view showing a state immediately before the engagement, and FIG. 6B is a state at the time of engagement. FIG. As shown in FIG. 6, the engaged portion 70 </ b> B is provided on the outer side surfaces 12 and 22 of one long side portion 15 and 25 of the first case 10 and the second case 20. The engaged portion 70B has an engaging protrusion 71b that engages with the hole 65b of the locking member 6B, and a convex portion 72b that enters between the pair of claw portions 62b.

  Note that the engagement protrusion 71a of the engaged portion 70A and the engagement protrusion 71b of the engaged portion 70B have the same basic configuration although the objects to be engaged are different. Will be described together. The same applies to the convex portion 72a of the engaged portion 70A and the convex portion 72b of the engaged portion 70B.

  The engagement protrusions 71a and 71b protrude from the first wall part 11 of the first case 10 and protrude from the second wall part 21 of the second case 20 to protrude from the first protrusions 711a and 711b. Overlapping second protrusions 712a and 712b are provided. The engaging protrusions 71a and 71b are formed to have outer shapes that can be accommodated in the holes 65a and 65b of the locking members 6A and 6B. Specifically, the width H1 of the engaging protrusions 71a and 71b is set to be smaller than the width H2 of the widened portions 66a and 66b of the holes 65a and 65b and larger than the width H3 of the narrow-width portions 67a and 67b. Further, also in the length L1 in the extending direction X of the engaging protrusions 71a and 71b, the engaging protrusions 71a and 71b are set to be slidable within the holes 65a and 65b. Thereby, engagement protrusion 71a, 71b can be accommodated in the wide part 66a, 66b of hole 65a, 65b (refer Fig.5 (a) and FIG.6 (a)). Further, when the locking members 6A and 6B are slid in the fitting direction F so that the engagement protrusions 71a and 71b enter the narrow width parts 67a and 67b, the engagement protrusion 71a is inserted into the narrow width parts 67a and 67b. , 71b (see FIGS. 5B and 6B).

  In addition, it is preferable to form the taper parts 713a and 713b which incline in the same direction as the said taper parts 68a and 68b in the part facing the taper parts 68a and 68b of the engagement protrusions 71a and 71b. Since the tapered portions 713a and 713b and the tapered portions 68a and 68b of the locking members 6A and 6B are provided, friction between the engaging protrusions 71a and 71b and the locking members 6A and 6B when sliding in the fitting direction F is achieved. Can be suppressed, and can be easily fitted.

The projecting portions 72a and 72b project from the first projecting portions 721a and 721b projecting from the first wall portion 11 of the first case 10 and the second wall portion 21 of the second case 20, and are projected to the first projecting portions 721a and 721b. And second convex portions 722a and 722b overlapping with each other. A pair of guide grooves 723a and 723b for individually guiding the pair of claw portions 62a and 62b are formed along the sliding direction F in each of the first convex portions 721a and 721b and the second convex portions 722a and 722b. (See FIGS. 7A, 7D, and 7F). When the pair of claw portions 62a and 62b are guided by the guide grooves 723a and 723b during the above-described sliding, the convex portions 72a and 72b enter between the pair of claw portions 62a and 62b. Here, an interval H4 (see FIGS. 7A, 7D, and 7F) between the pair of guide grooves 723a and 723b in the convex portions 72a and 72b is larger than an interval H5 between the pair of claw portions 62a and 62b. Is formed. For this reason, when the convex portions 72a and 72b enter the pair of claw portions 62a and 62b, the convex portions 72a and 72b are fitted into the pair of claw portions 62a and 62b.
After the fitting, when the locking members 6A and 6B are slid in the direction G opposite to the fitting direction F, the fitting of the narrow portions 67a and 67b and the engaging projections 71a and 71b and the pair of claw portions 62a are performed. , 62b and the projections 72a, 72b are disengaged, and the locking members 6A, 6B can be removed.

  Further, as a configuration provided only in the engaged portion 70 </ b> A, the second protrusion 712 a is provided with a rib 714 a extending along the outer surface 22. The rib 714a extends toward the opposite side to the sliding direction F with respect to the second protrusion 712a. Further, a gap larger than the thickness of the locking member 6A is provided between the rib 714a and the outer side surface 22. For this reason, during the slide, the locking member 6A enters the gap, and after fitting, the movement in the direction away from the outer surface 22 is restricted by the rib 714a.

  Next, the state of the waterproof packing 4 when the engaged parts 70A and 70B are engaged with the locking members 6A and 6B will be described with reference to FIG. 7 is an explanatory view showing a state of the waterproof packing 4, wherein (a) is a cross-sectional view taken along the line VIIa-VIIa in FIG. 1, and (b) is a cross-sectional view taken along the line VIIb-VIIb in FIG. (C) is a sectional view taken along the line VIIc-VIIc in FIG. 1, (d) is a sectional view taken along the line VIId-VIId in FIG. 1, and (e) is taken from the line VIIe-VIIe in FIG. Sectional view seen, (f) is a sectional view seen from the line VIIf-VIIf in FIG.

  Here, a housing groove 211 for housing the waterproof packing 4 is formed on the entire front surface of the second wall portion 21 of the second case 20. On the other hand, a pressing projection 111 that enters the housing groove 211 and presses the waterproof packing 4 is formed on the entire front surface of the first wall portion 11 of the first case 10.

As shown in FIGS. 7B, 7C and 7E, the first protrusions 711a and 711b and the first protrusions 711a and 711b and the first protrusions 711a and 711b and The two protrusions 712a and 712b are fastened (see arrow K1). This fastening force presses the waterproof packing 4 through the housing groove 211 and the pressing protrusion 111.
On the other hand, as shown in FIGS. 7A, 7D, and 7F, in the pair of claw portions 62a, 62b of the locking members 6A, 6B, the first convex portion 721a, 721b and the second convex portions 722a and 722b are fastened. (See arrow K2). This fastening force presses the waterproof packing 4 through the housing groove 211 and the pressing protrusion 111. Here, as described above, since the pair of claw portions 62a and 62b are stepped, they can be fastened at positions closer to the waterproof packing 4 than the main body portions 61a and 61b. With such a pair of claw portions 62a and 62b, a fastening force stronger than that of the main body portions 61a and 61b can be transmitted to the waterproof packing 4, and higher waterproof properties can be exhibited.

  Further, as shown in FIGS. 8 and 9, an exterior panel 100 is attached to the case 3. FIG. 8 is an exploded perspective view showing a schematic configuration of the case 3 and the exterior panel 100. 9A and 9B are explanatory views showing the appearance of the camera 1 to which the exterior panel 100 is attached. FIG. 9A is a front view, FIG. 9B is a bottom view, and FIG. 9C is a side view.

The exterior panel 100 includes a front panel 101 that covers the front side of the case 3 and a back panel 102 that covers the back side of the case 3. The front panel 101 and the back panel 102 surround the entirety of one short side portion 14 and 24 and one long side portion 15 and 25 in the first case 10 and the second case 20, and the other long side portions. In 17 and 27, only a part is covered, and the other short sides 16 and 26 are exposed.
For this reason, the exterior panel 100 is provided with a first auxiliary panel 103 that covers the exposed portions of the other long side portions 17 and 27 and a second auxiliary panel 104 that covers the entire other short side portions 16 and 26. ing.
The front panel 101, the back panel 102, the first auxiliary panel 103, and the second auxiliary panel 104 are assembled to the case 3 to form the exterior of the camera 1.

  Here, a panel fixing member 105 to which the back panel 102 is fixed is attached to one end of the front panel 101 by welding. FIG. 10 is a side view showing a state immediately before the panel fixing member 105 is attached to the back panel 102. FIG. 11 is an explanatory view showing a part of the state in which the panel fixing member 105 is attached to the back panel 102, (a) a front view, (b) a bottom view, and (c) a side view. As shown in FIGS. 10 and 11, the panel fixing member 105 is formed of sheet metal and is disposed on the one short side portion 14, 24 side of the front panel 101. Screw holes 106 for screwing the back panel 102 are provided at the upper and lower ends of the panel fixing member 105. In addition, a pair of restricting portions 107 that prevent the locking member 6A fitted to the engaging protrusions 71a and the convex portions 72a from coming off are provided at substantially the center of the panel fixing member 105. The pair of restricting portions 107 extend toward the back panel 102, and the side end portions thereof come into contact with the end portion on the opposite side to the claw portion 62a in the main body portion 61a of the locking member 6A. ing. Since the restricting portion 107 is in contact with the locking member 6A in this way, even if the locking member 6A is displaced in the opposite direction G due to vibration or the like, the displacement is restricted by the restricting portion 107 and is prevented from coming off.

  As shown in FIG. 9C, the back panel 102 is provided with a through hole 108 that communicates with the screw hole 106 of the panel fixing member 105. When a screw is screwed into the screw hole 106 through the through hole 108, the back panel 102 is fixed to the panel fixing member 105.

  Further, as shown in FIGS. 11A and 11B, through holes 109 respectively communicating with the screw holes 63b are provided at positions facing the screw holes 63b of the locking member 6B on the front panel 101 and the back panel 102. Is formed. When the screw 110 is screwed into the screw hole 63b through the through hole 109, the locking member 6B is fixed to the front panel 101 and the back panel 102.

  As described above, according to the present embodiment, the engagement protrusions 71a and 71b and the protrusions 72a and 72b provided on the outer surface 12 of the first case 10 and the outer surface 22 of the second case 20, respectively, The first case 10 and the second case 20 can be fixed by engaging the locking members 6A and 6B. Conventionally, if the portion fixed with the fixing screw is changed to the locking members 6A and 6B, the engaging protrusions 71a and 71b, and the projecting portions 72a and 72b as in the present embodiment, the portion is fixed. Design constraints can be reduced compared with the case of using screws, and the degree of freedom in design can be increased.

Further, in the locking members 6A and 6B, the pair of claw portions 62a and 62b are fitted to the convex portions 72a and 72b, and the hole portions 65a and 65b are fitted to the engaging projections 71a and 71b. It is possible to fasten two places with one member. Thereby, the 1st wall part 11 of the 1st case 10 and the 2nd wall part 21 of the 2nd case 20 can be firmly fixed rather than the case where it fixes with one fixing screw, and waterproofness is also good. Can be maintained.
Further, in the case of a fixing screw, the fixing screw must be rotated at the time of attachment / detachment, but at this time, the thread is worn, and there is a risk of hindering subsequent attachment / detachment work. However, if it is said locking member 6A, 6B, it can attach or detach by only sliding, and it becomes difficult to damage rather than the case where a fixing screw is rotated. For this reason, repeated disassembly and assembly can be performed more reliably.

  And the waterproof packing 4 is interposed over the perimeter between the 1st wall part 11 of the 1st case 10, and the 2nd wall part 21 of the 2nd case 20, and locking member 6A, 6B is engaged. The waterproof packing 4 is pressed by fastening the protrusions 71a and 71b and the convex portions 72a and 72b. Therefore, higher waterproofness can be ensured.

Note that the present invention is not limited to the above embodiment, and can be modified as appropriate. In the following description, the same parts as those in the above embodiment are denoted by the same reference numerals and the description thereof is omitted.
For example, in the present embodiment, the case in which the pair of claw portions 62a and 62b are at regular intervals throughout the locking members 6A and 6B has been described as an example, but FIGS. 12 (a) and 12 (b) illustrate. In the illustrated locking members 6a and 6b, the inner wall surfaces of the pair of claw portions 621a and 621b are tapered so that the distance between the pair of claw portions 621a and 621b gradually decreases from the tip to the back. Yes. Thus, as the locking members 6a and 6b advance in the sliding direction F, the pair of claw portions 62a and 62b firmly fasten the convex portions 72a and 72b.

  Moreover, although the said embodiment demonstrated and demonstrated the case where the hole parts 65a and 65b were obstruct | occluded shape, like a locking member 6C shown in FIG.12 (c), a pair of nail | claw part 62c and a hole are demonstrated. It is also possible to communicate with the portion 65c. In this locking member 6C, the entire pair of claws 62c is inclined to gradually narrow the interval between the pair of claws 62c from the tip to the back.

  In the above embodiment, the case where there is one hole 65a, 65b has been described as an example. However, as in the locking member 6D shown in FIG. 12D, the holes 65a, 65b are arranged along the extending direction. It is also possible to form a plurality of holes 651d and 652d. In this case, the distance between the pair of claw parts 62d and the adjacent hole part 651d is different from the distance between the pair of claw parts 62d and the far hole part 652d. In the embodiment, the engagement protrusion 71a and the protrusion 72a provided on one short side part 14 and 24 and the engagement protrusion 71b and the protrusion 72b provided on one long side part 15 and 25 are both Since the distances between are different, dedicated locking members 6A and 6B adapted to the respective distances have been used. However, in the locking member 6D shown in FIG. 12 (d), the engagement protrusions 71a and 71b and the projections 72a and 72b having different intervals can be engaged with one member.

1 Camera (electronic equipment)
2 Lens Unit 3 Case 4 Waterproof Packing 5 Fixing Screw 6, 6A, 6B Locking Member 10 First Case 11 First Wall 12 Outer Side 20 Second Case 21 Second Wall 22 Outer Side 61a, 61b Body 62a, 62b Claw part 65a, 65b Hole part 66a, 66b Widened part 67a, 67b Narrow part 68a, 68b Tapered part 70, 70A, 70B Engaged part 71a, 71b Engagement protrusion 72a, 72b Protrusion part 100 Exterior panel 211 Housing groove 711a, 711b first protrusion 712a, 712b second protrusion 713a, 713b taper 714a rib 721a, 721b first protrusion 722a, 722b second protrusion 723a, 723b guide groove X extending direction

Claims (4)

A first case having a first wall formed over the entire circumference;
A second case in which a second wall part contacting the first wall part of the first case is formed over the entire circumference;
A plate-shaped locking member that locks the first case and the second case by engaging the outer surface of the first wall portion and the outer surface of the second wall portion,
The locking member has a pair of claw portions extending substantially in parallel toward the outside, and at least one hole portion formed along the extending direction of the claw portion,
The hole portion has a width in a direction perpendicular to the extending direction of the claw portion, which becomes a widened wide portion at a portion close to the claw portion, and a narrow width portion narrower than the widened portion at a portion far from the claw portion, It is
The locking member is attached to the outer surface of the first wall portion and the outer surface of the second wall portion, and is formed integrally with the first wall portion and the second wall portion, respectively, and overlaps with each other. An engagement protrusion that engages with the hole and a convex portion that enters between the pair of claw portions are formed,
The width of the engagement protrusion is set to be smaller than the widened portion of the hole and larger than the narrow width portion of the hole,
The width of the convex part is formed larger than the distance between the pair of claw parts. The electronic device according to claim 1,
The electronic device is characterized in that an interval between the pair of claws is gradually narrowed from the tip to the back. The electronic device according to claim 1 or 2,
The pair of claw portions has a stepped shape with respect to the extending direction. In the electronic device as described in any one of Claims 1-3,
A waterproof packing is interposed between the first wall portion of the first case and the second wall portion of the second case over the entire periphery.

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