Electronic device

Abstract

An electronic device according to an embodiment of the present technology includes a first housing, a second housing, and a first gasket. The first housing has a first engaging portion with an engaging protrusion. The second housing has a second engaging portion that receives the engaging protrusion and engages with the first engaging portion. The first gasket constitutes either the first engaging portion or the second engaging portion. The first engaging portion and the second engaging portion are configured to maintain the first gasket in a compressed state in an engaged state in which engagement is completed. The second engaging portion has a stress relaxation portion that relaxes stress acting on the first gasket in the engaged state compared to a state halfway through engagement.

Description

Technical Field

[0001] This technology relates to electronic devices. Background Technology

[0002] Previously, technologies have been developed to enable waterproofing of electronic devices such as portable terminals. For example, Patent Document 1 describes a waterproof mobile phone. This mobile phone has an upper casing and a lower casing. The lower casing abuts against the upper casing via an annular waterproof gasket made of rubber material and is secured with screws. In addition, the lower casing also has a battery cover with a waterproof gasket and a locking mechanism that allows the battery cover to be installed and removed relative to the lower casing by rotating it (Patent Document 1 specification paragraphs

[0015] ,

[0016] ). Figure 1 wait).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2008-10599 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In recent years, the demand for repairing electronic devices for extended use has increased, thus requiring a structure that facilitates easy assembly and disassembly of electronic devices. On the other hand, depending on the structure of the electronic device, there is a possibility of damaging the waterproof structure during assembly or disassembly, or the waterproof structure may not be assembled accurately, thereby compromising its waterproof performance.

[0008] In view of the above, the purpose of this technology is to provide electronic devices that maintain waterproof performance while being easy to assemble and disassemble.

[0009] Methods for solving problems

[0010] To achieve the above objectives, the electronic device according to one embodiment of the present technology includes a first housing, a second housing, and a first gasket.

[0011] The first housing has a first engaging portion with an engaging protrusion.

[0012] The second housing has a second engaging portion that receives the engaging protrusion and engages with the first engaging portion.

[0013] The first gasket constitutes either the first engaging portion or the second engaging portion.

[0014] The first engaging portion and the second engaging portion are configured to maintain the first gasket in a compressed state when the engagement is completed.

[0015] The second engaging portion has a stress-relieving portion that reduces the stress acting on the first gasket in the engaging state compared to the state during engagement.

[0016] In this electronic device, either a first engaging portion provided in the first housing and having an engaging protrusion, or a second engaging portion provided in the second housing and receiving the engaging protrusion, is composed of a first gasket. In the engaged state, the first gasket is maintained in a compressed state. Furthermore, in the engaged state, the stress relief portion provided in the second engaging portion alleviates the stress acting on the first gasket compared to the state during engagement. Thus, the engaging state is maintained by the restoring force of the first gasket, thereby achieving an electronic device that maintains waterproof performance while being easy to assemble and disassemble. Attached Figure Description

[0017] Figure 1 This is a schematic perspective view showing the appearance of an electronic device according to one embodiment of the present technology.

[0018] Figure 2 This is a schematic perspective perspective view showing an example of the internal structure of an electronic device.

[0019] Figure 3 This is a schematic exploded perspective view showing an example of the structure of various parts of an electronic device.

[0020] Figure 4 This is a schematic partial sectional view showing a structural example of the rear housing.

[0021] Figure 5 This is a schematic partial sectional view showing a structural example of the front housing.

[0022] Figure 6 This is a schematic perspective view showing the assembly process of the housing unit.

[0023] Figure 7 This is a schematic perspective view showing the assembly process of the housing unit and the outer peripheral belt.

[0024] Figure 8 This is a schematic cross-sectional view showing the rear and front housings in the midst of engagement.

[0025] Figure 9 This is a schematic cross-sectional view showing the rear and front housings in the engaged state.

[0026] Figure 10 This is a schematic diagram illustrating an example of a waterproof structure based on a first gasket.

[0027] Figure 11 This is a schematic diagram illustrating another example of a waterproof construction based on a first gasket.

[0028] Figure 12 This is a schematic diagram illustrating another example of a waterproof construction based on a first gasket.

[0029] Figure 13 This is a schematic diagram illustrating another example of a waterproof construction based on a first gasket.

[0030] Figure 14 This is a schematic diagram illustrating a structure used to counteract reaction forces.

[0031] Figure 15 This is a schematic diagram showing a structural example of the outer peripheral side of a housing unit with an outer peripheral band installed.

[0032] Figure 16 This is a schematic diagram illustrating the loading and unloading method of the outer perimeter belt.

[0033] Figure 17 This is a schematic perspective view showing an example of the structure of a pressure regulating valve.

[0034] Figure 18 This is a schematic diagram used to illustrate the operation of a pressure regulating valve.

[0035] Figure 19 This is a schematic diagram showing a structural example of an electronic device listed as a comparative example. Detailed Implementation

[0036] The embodiments of this technology will now be described with reference to the accompanying drawings.

[0037] [Structure of electronic devices]

[0038] Figure 1 This is a schematic perspective view showing the appearance of an electronic device according to one embodiment of the present technology. Figure 2 This is a schematic perspective view showing an example of the internal structure of an electronic device. Figure 3 This is a schematic exploded perspective view showing an example of the structure of various parts of an electronic device.

[0039] The electronic device 100 involved in this embodiment is an electronic device such as a smartphone, and has a waterproof structure using a gasket. Figure 3 As shown, the electronic device 100 has an internal unit 10, a rear housing 20, a front housing 40, and an outer peripheral belt 60. Furthermore, the electronic device 100 also has a first gasket 1 and a second gasket 2.

[0040] Hereinafter, the side where the rear housing 20 is provided will be described as the rear side of the electronic device 100, and the opposite side will be described as the front side of the electronic device 100. In addition, a display screen 11 is provided on the front side of the electronic device 100. Figure 1 and Figure 2This is an assembly diagram of the electronic device 100 viewed from the rear (rear housing 20 side). Additionally, Figure 2 The diagram shows the interior of the electronic device 100 as seen through the rear housing 20.

[0041] like Figure 1 and Figure 2 As shown, in the electronic device 100, the rear housing 20 and the front housing 40 are assembled together to form a housing unit 3. The housing unit 3 is the outer shell of the electronic device 100 that houses the internal unit 10. In this embodiment, the housing unit 3 is configured as a plate-shaped structure with a rectangular planar shape. Furthermore, as... Figure 3 As shown, although the rear side of the housing unit 3 is covered by the rear housing 20, the front housing 40, which constitutes the front side of the housing unit 3, has an opening 4 for exposing the display screen 11.

[0042] like Figure 2 As shown, the internal unit 10 includes a display screen 11, a circuit board 12, a camera unit 13, a battery 14, an upper module 15, and a lower module 16. Additionally, as... Figure 3 As shown, a base substrate 17 is provided on the rear side of the display screen 11. A circuit board 12, a camera unit 13, a battery 14, an upper module 15, and a lower module 16 are respectively arranged on the base substrate 17.

[0043] The display screen 11 is a thin, flat display element, such as an LCD or OLED display. The circuit board 12 is a board on which arithmetic units and memory, etc., are mounted to enable the electronic device 100 to operate. The camera unit 13 constitutes a rear-facing camera facing the rear of the electronic device 100, and is a unitized component that integrates an image sensor such as a CCD or CMOS. The battery 14 is a secondary battery that powers the electronic device 100. The upper module 15 and lower module 16 are modules disposed on the upper and lower sides of the electronic device 100, respectively, and include components such as a microphone, speaker, vibrator, antenna, light sensor, camera sensor, and illumination lamp. Furthermore, the structure of the internal units is not limited to these.

[0044] The internal unit 10, which is modularized into various components, is mounted on the front housing 40 with the display surface of the display screen 11 facing forward and covering the opening 4. In this embodiment, the display screen 11 is equivalent to an exposed component.

[0045] like Figure 3 As shown, the rear housing 20 is a housing that covers the rear side of the electronic device 100. The rear housing 20 has a cover portion 21, a rear engaging portion 22, and a rear outer peripheral end portion 23. The cover portion 21, the rear engaging portion 22, and the rear outer peripheral end portion 23 are integrally molded from a resin material or the like. Furthermore, in... Figure 3In the example shown, a first gasket 1 is provided in the rear housing 20. The first gasket 1 constitutes the rear engagement portion 22.

[0046] The cover portion 21 is a plate-shaped member forming the rear surface of the electronic device 100. A shooting window 24 is provided on the cover portion 21, positioned opposite to the camera unit 13. The rear engaging portion 22 is a structural part that engages with the front housing 40 (front engaging portion 42). The rear engaging portion 22 is formed annularly on the front side of the cover portion 21. The rear outer peripheral end portion 23 is formed on the outer periphery of the cover portion 21 and is a structural part that protrudes outward from the connection point between the rear engaging portion 22 and the cover portion 21.

[0047] Figure 4 This is a schematic partial cross-sectional view showing a structural example of the rear housing 20. Figure 4 The diagram schematically shows a portion of the cross-section of the rear housing 20 after it has been cut along the thickness direction of the electronic device 100. (See diagram for reference.) Figure 4 As shown, the rear engaging portion 22 has a support portion 25 and an engaging protrusion 26.

[0048] The support portion 25 is an annular wall protruding from the front side (lower side in the figure) of the cover portion 21 and functions as a structure supporting the engaging protrusion 26. Furthermore, the support portion 25 is disposed inside the side wall portion 45 of the front housing 40, which will be described later, and forms the inner peripheral wall of the housing unit 3. Here, the thickness of the support portion 25 is uniform.

[0049] The engaging protrusion 26 is a convex engaging end that engages with the front housing 40 (front engaging portion 42). In this embodiment, the engaging protrusion 26 is formed along the entire circumference of the front end portion of the annular support portion 25. In this embodiment, the rear engaging portion 22 corresponds to the first engaging portion having the engaging protrusion, and the rear housing 20 corresponds to the first housing having the first engaging portion.

[0050] like Figure 4 As shown, the engaging protrusion 26 is formed by a first washer 1. That is, the first washer 1 forms the engaging protrusion 26 on the rear engaging portion 22. Specifically, the first washer 1 is configured to cover the front end of the front end portion of the support portion 25 and the inner and outer portions connected to the front end, and a convex engaging end is formed by the first washer 1.

[0051] The first gasket 1 is an elastic member made of resin material such as silicone rubber, and functions as a water-stopping member to achieve a waterproof structure. The first gasket 1 is formed at the front end of the support portion 25, for example, by injection molding.

[0052] return Figure 3The front housing 40 is a housing provided on the front side of the electronic device 100 and forms the front surface of the electronic device 100 together with the display screen 11. The front housing 40 has a frame portion 41, a front engaging portion 42, and a front outer peripheral end portion 43. The frame portion 41, the front engaging portion 42, and the rear outer peripheral end portion 23 are integrally molded from a resin material or the like. In addition, the front housing 40 is provided with an opening 4 surrounded by the front engaging portion 42.

[0053] The frame portion 41 is an annular plate member formed on the front surface of the electronic device 100, surrounding the display screen 11 (bezel portion). Furthermore, the portion surrounded by the frame portion 41 forms an opening 4 for exposing the display screen 11. The front engaging portion 42 is a structural portion that engages with the rear housing 20 (rear engaging portion 22). The front engaging portion 42 is formed annularly on the rear side of the frame portion 41. The front outer peripheral end portion 43 is formed on the outer periphery of the frame portion 41 and is a structural portion that protrudes outward beyond the connection point between the front engaging portion 42 and the frame portion 41.

[0054] Figure 5 This is a schematic partial cross-sectional view showing a structural example of the front housing 40. Figure 5 The diagram schematically shows a portion of the cross-section of the front housing 40 after it has been cut along the thickness direction of the electronic device 100. Furthermore, Figure 5 The diagram shows the internal unit 10 mounted on the front housing 40. (As shown) Figure 5 As shown, the front engaging portion 42 has a side wall portion 45 and an engaging groove portion 46.

[0055] The side wall portion 45 is an annular wall protruding from the rear side (upper side in the figure) of the frame portion 41 and functions as a structure forming the engaging groove portion 46. In addition, the side wall portion 45 is disposed on the outside of the support portion 25 of the rear housing 20, forming the outer peripheral wall of the housing unit 3.

[0056] The engaging groove 46 is a concave engaging groove that engages with the rear housing 20 (rear engaging portion 22). In this embodiment, a region is formed along the entire circumference at a position where the annular sidewall portion 45 is moved a predetermined distance from the front end side (rear side) to the root side (front side), causing the inner circumferential surface of the sidewall portion 45 to be recessed. This concave recess constitutes the engaging groove 46 for receiving the engaging protrusion 26 (first gasket 1) of the rear housing 20. In this embodiment, the front engaging portion 42 corresponds to a second engaging portion for receiving the engaging protrusion and engaging with the first engaging portion, and the front housing 40 corresponds to a second housing having the second engaging portion.

[0057] Furthermore, in this embodiment, a second gasket 2 is provided on the front housing 40. The second gasket 2, like the first gasket 1, is an elastic member made of resin material such as silicone rubber. The second gasket 2 is disposed between the front housing 40 and the display screen 11. This enables waterproofing between the front housing 40 and the display screen 11, thereby preventing water from entering from the front surface of the electronic device 100.

[0058] Here, the second gasket 2 is positioned closer to the frame portion 41 than the engaging groove 46, surrounding the entire circumference of the opening 4. Furthermore, in Figure 5 The lower side diagram illustrates the shape of the second gasket 2 in its free state. The second gasket 2 has a support portion 65 for supporting the display screen 11 and a peripheral portion 66 disposed outside the support portion 65. The peripheral portion 66 is thicker than the support portion 65. Furthermore, the dashed lines shown in the lower side diagram represent the amount of compression generated by being pressed by the display screen 11. The amount of compression for waterproofing is set, for example, to about 10% of the thickness.

[0059] like Figure 5 As shown, the peripheral portion 66 and the sidewall portion 45 together form an engaging groove 46 for receiving the engaging protrusion 26 of the rear housing 20. Here, the inner corner of the peripheral portion 66 is chamfered to receive the engaging protrusion 26. Thus, the engaging groove 46 can be formed using a second gasket 2.

[0060] The waterproof structure using the first gasket 1 and the second gasket 2 has now been described. However, the housing unit 3 is provided with an auxiliary engaging mechanism for engaging the rear housing 20 with the front housing 40. Figure 4 and Figure 5 As shown, in this embodiment, the rear engaging portion 22 has a hook portion 28 that is different from the engaging mechanism using the first gasket 1, and the front housing 40 has a hook receiving portion 48 that receives the hook portion 28. The hook portion 28 and the hook receiving portion 48 together form an auxiliary engaging mechanism.

[0061] like Figure 4 As shown, the hook portion 28 is a protrusion partially provided on the outer periphery of the support portion 25 of the rear engaging portion 22. For example, multiple hook portions 28 are provided at intervals on the outer periphery of the side wall portion 45. The hook portion 28 is, for example, shaped such that its cross-section in the thickness direction is triangular. Furthermore, the slope of the rear side (upper side in the figure) to which an external force is applied during disassembly is set to a steeper angle than the slope of the front side (lower side in the figure).

[0062] like Figure 5As shown, the hook receiving portion 48 is a through hole provided in the side wall portion 45 of the front engaging portion 42 for the hook portion 28 to be inserted. However, the hook receiving portion 48 does not necessarily have to be a through hole; for example, a slot could be used. Thus, the hook portion 28 of the rear housing 20 and the hook receiving portion 48 of the front housing 40 engage in a portion different from that using the first gasket 1. This helps to maintain the engagement state formed by the first gasket 1.

[0063] return Figure 3 The outer peripheral band 60 is an annular member with a width approximately the same as the thickness of the housing unit 3. As mentioned earlier, in this embodiment, the outer peripheral side surface 70 of the housing unit 3 is formed by the front engaging portion 42 (side wall portion 45) of the front housing 40. The outer peripheral band 60 is configured to cover the outer peripheral side surface 70 of the housing unit 3. This prevents unintentional disassembly of the rear housing 20 and the front housing 40. The structure of the outer peripheral side surface 70 and the outer peripheral band 60 will be explained by referring to... Figure 15 and Figure 16 This will be explained in detail in later sections.

[0064] The assembly process of electronic device 100 will be described below. Figure 6 This is a schematic perspective view showing the assembly process of the housing unit. Figure 7 This is a schematic perspective view showing the assembly process of the housing unit and the outer peripheral belt.

[0065] like Figure 6 As shown, the internal unit 10 is first installed onto the front housing 40. Thus, with the display screen 11 in contact with the second gasket 2, the internal unit 10 is housed within the front housing 40. Next, the rear housing 20 is installed from the rear side of the front housing 40. During this process, the front engaging portion 42 engages with the rear engaging portion 22, fixing the front housing 40 and the rear housing 20 to each other at the designated installation position. At this time, the hook portion 28 and the hook receiving portion 48 also engage, making it more difficult for the front housing 40 and the rear housing 20 to separate. In this manner, the housing unit 3 is constructed.

[0066] After forming shell unit 3, as Figure 7 As shown, the outer peripheral belt 60 is mounted to the housing unit 3. The outer peripheral belt 60 is mounted to be embedded in the outer peripheral side 70 of the housing unit 3. Thus, it is assembled as shown... Figure 1 (or Figure 2 The electronic device 100 is shown in the diagram. Thus, in this embodiment, the electronic device 100 can be assembled without the use of screws or similar fasteners, making it a structure easy for users to assemble when repairing the electronic device 100 themselves. Furthermore, when disassembling the electronic device 100, the assembly process described above is essentially reversed. The process of disassembling the outer peripheral belt 60 will be explained in detail later.

[0067] [The engagement of the rear engaging portion 22 and the front engaging portion 42]

[0068] The engagement process of the rear engaging part 22 and the front engaging part 42 will be explained below. Figure 8 This is a schematic cross-sectional view showing the rear and front housings in the mid-engagement state. Figure 9 This is a schematic cross-sectional view showing the rear and front housings in the engaged state.

[0069] In this disclosure, the "intermediate engagement" state refers to the state from the start of engagement between the rear engagement portion 22 and the front engagement portion 44 (the operation of installing the rear housing 20 and the front housing 40) until the engagement is completed. In the intermediate engagement state, the rear engagement portion 22 and the front engagement portion 44 are not fully engaged, and sufficient engagement cannot be achieved.

[0070] Furthermore, in this disclosure, the "engaged state" refers to the state in which the engagement of the rear engaging portion 22 and the front engaging portion 42 is completed. For example, as... Figure 9 As shown, engagement is complete when the cover 21 of the rear engaging portion 22 abuts against the front end of the side wall portion 45 of the front engaging portion 42. This state also refers to a state where the rear housing 20 abuts against a component of the front housing 40 and cannot be further inserted. Furthermore, the insertion depth for engagement can have a margin. For example, even if there is a gap between the front end of the side wall portion 45 and the cover 21, engagement is considered complete as long as certain conditions are met (e.g., the insertion depth of the engaging protrusion 26 exceeds a predetermined threshold, or the force required to separate the rear engaging portion 22 from the front engaging portion 42 exceeds a predetermined threshold).

[0071] First, let's explain the state of the card during the process. For example... Figure 8 As shown, when the rear engaging portion 22 is inserted into the front engaging portion 42, the engaging protrusion 26 and hook 28 of the rear engaging portion 22 come into contact with the side wall portion 45 of the front engaging portion 42. When the rear engaging portion 22 is further inserted, the side wall portion 45 is pushed outward by the engaging protrusion 26 or hook 28. Furthermore, while this example assumes the side wall portion 45 is bent outward, it also considers the possibility that the support portion 25 of the rear engaging portion 22 may be bent inward due to the reaction force from the side wall portion 45.

[0072] Furthermore, during the engagement phase, the first washer 1, constituting the engagement protrusion 26, is compressed by being pressed against the side wall 45 of the front engagement portion 42. For an elastic body like the first washer 1, when compressed by an external force, the greater the amount of compression (hereinafter referred to as the compression amount) from its free state without external force, the greater the stress inside the elastic body. Therefore, the engagement phase is a state where the stress on the first washer 1 increases, and a restoring force acts to restore it to its free state shape.

[0073] The following explains the card's closed / closed state. For example... Figure 9 As shown, in the engaged state, the engaging protrusion 26 (first washer 1) of the rear engaging portion 22 engages with the engaging groove 46 provided in the front engaging portion 42. Furthermore, the hook portion 28 of the rear engaging portion 22 engages with the hook receiving portion 48 of the front engaging portion 42. In this case, Figure 8 The deflection and other deformations at the side wall portion 45 of the front engaging portion 42 that occurred during the process are eliminated. As a result, the side wall portion 45 of the front engaging portion 42 and the support portion 25 of the rear engaging portion 22 are restored to their normal positions. Figure 4 and Figure 5 The natural state is shown, and they are arranged in a parallel configuration relative to each other.

[0074] On the other hand, the engaging protrusion 26 (first gasket 1) that engages with the engaging groove 46 is compressed by the pushing of the side wall portion 45 constituting the engaging groove 46 and the second gasket 2. That is, in the engaged state, the first gasket 1 does not return to its natural shape, but remains in a compressed state with a predetermined amount of compression.

[0075] Thus, in this embodiment, the rear engaging portion 22 and the front engaging portion 42 are configured to maintain the first gasket 1 in a compressed state when the engagement is complete. To maintain airtightness, the compression amount is set, for example, to about 15% to 30% of the thickness of the first gasket 1. As a result, the first gasket 1 functions as a water-stopping member, enabling the electronic device 100 to have waterproof performance.

[0076] Furthermore, the rear engaging portion 22 has a stress-relieving portion 5, which, in the engaged state, can alleviate the stress acting on the first gasket 1 compared to the state during engagement. In other words, the stress-relieving portion 5 is a mechanism for reducing the increased stress inside the first gasket 1 during engagement. Methods for relieving stress include changing the shape of the first gasket 1, changing the compression amount per unit length (the proportion of compression amount), etc.

[0077] Furthermore, as described above, in the engaged state, the first gasket 1 is compressed by a predetermined amount of compression. Therefore, the stress relief section 5 does not reduce the stress acting on the first gasket 1 to zero (for example, it restores the first gasket 1 to its natural shape).

[0078] For example, such as Figure 8 As shown, when the rear engaging portion 22 is inserted into the front engaging portion 42, the first gasket 1 (engaging protrusion 26) is compressed by pressure from the side wall portion 45 until it reaches the engaging groove 46. Then, when the first gasket 1 (engaging protrusion 26) reaches the engaging groove 46, the first gasket 1, compressed therein, will move into the space formed by the engaging groove 46, thus reducing the amount of compression. Therefore, the space formed by the engaging groove 46 becomes a space for releasing the amount of compression from the first gasket 1. Thus, in Figure 8 In the example shown, the engagement groove 46 provided on the front engagement portion 42 functions as a stress-relieving portion 5. In this case, the engagement groove 46 reduces the amount of compression on the first gasket 1 in the engaged state compared to the state during engagement. As a result, the stress acting on the first gasket 1 is relieved.

[0079] In the first gasket 1 where stress is relieved, if the stress is to be increased again, energy is required to compress the first gasket 1. That is, without sufficient external force, the first gasket 1 cannot be moved from the locked state. It can be said that this enables the first gasket itself to function as a component that prevents the separation of the front housing 40 and the rear housing 20, thereby maintaining the state of the housing unit 3.

[0080] Thus, during the engagement process, the rear engaging portion 22 and the front engaging portion 42 compress the first gasket 1. However, when assembled to the predetermined position (engaged state), the compression of the first gasket 1 is mitigated compared to the engagement process, and even in this state, it maintains a structure and shape that ensures airtightness under compression. In other words, the rear engaging portion 22 and the front engaging portion 42 only need to be assembled until the components abut against each other, thereby achieving an engaging structure that provides waterproofing. As a result, an electronic device that maintains waterproof performance while being easy to assemble and disassemble can be achieved.

[0081] In addition, such as Figure 9 As shown, in this embodiment, a second gasket 2 is provided between the display screen 11 and the front housing 40. Furthermore, the first gasket 1 (engaging protrusion 26) provided on the rear housing 20, in the engaged state, presses the display screen 11 against the second gasket 2. That is, the flat portion of the display screen 11 located on its outer edge is clamped between the first gasket 1 and the second gasket 2.

[0082] This creates a highly airtight waterproof area on the back side of the display screen 11. Thus, the first gasket 1 can maintain the engagement of the rear housing 20 and the front housing 40 while simultaneously maintaining a tight fit between the display screen 11 and the front housing 40. This further enhances the waterproof performance.

[0083] In addition, such as Figure 9As shown, in this embodiment, in the installed state, the hook portion 28 of the rear housing 20 engages with the hook receiving portion 48 of the front housing 40. This, for example, can prevent the rear housing 20 and the front housing 40 from separating due to engagement via the first gasket 1. This improves the reliability of the electronic device 100. Furthermore, although the hook portion 28 and the hook receiving portion 48 have the function of preventing housing separation, the first gasket 1 also has a self-holding function (preventing separation), so it is not necessary to provide it.

[0084] In addition, Figure 9 In the process, after assembly to the engaged position, the outer peripheral belt 60 is installed. For example, as shown in the reference... Figure 8 As explained, it is generally believed that during the process of installing the rear housing 20 to the front housing 40, the front housing 40 (side wall portion 45) flexes outward due to the pushing force of the hook portion 28 of the rear housing 20. This also occurs when separating the rear housing 20 from the front housing 40.

[0085] The outer peripheral band 60 prevents such deformation by surrounding the front housing 40 (side wall portion 45) from the outside. This effectively prevents unintentional separation of the front housing 40 and the rear housing 20. Furthermore, the outer peripheral band 60 protects and shields the fastening functional parts (front engaging portion 42 and rear engaging portion 22). This helps prevent contamination or damage to the first gasket 1 and the like, thereby improving reliability. In addition, the outer peripheral band 60 can also be used as a decorative component to enhance the appearance of the electronic device 100.

[0086] The following describes a structural example of a waterproof structure consisting of a first gasket 1. The four structural examples described below are all waterproof structures in which a first gasket 1 is provided between the rear housing 20 and the front housing 40, and a stress-relieving portion 5 is included.

[0087] Figure 10 This is a schematic diagram illustrating an example of a waterproof structure consisting of a first gasket. Figure 10 In the waterproof structure 75a shown, the first gasket 1 is embedded in a predetermined space surrounded by the inner and outer walls, and the stress relief of the first gasket 1 maintains a secure, non-detachable engagement state and waterproof function. The waterproof structure 75a includes a rear housing 20a with a rear engagement portion 22a and a front housing 40a with a front engagement portion 42a. Furthermore, the housing unit 3a is formed by installing the rear housing 20a and the front housing 40a.

[0088] Figure 10 A is a cross-sectional view of the rear engaging part 22a. Figure 10 B is a cross-sectional view of the front engaging part 42a. Figure 10 C is a cross-sectional view of the waterproof structure 75a, showing the engagement state of the rear engaging portion 22a and the front engaging portion 42a. Additionally, Figure 10D is a structural example when a display screen 11 is installed in the waterproof structure 75a.

[0089] like Figure 10 As shown in Figure A, the rear engaging portion 22a has a support portion 25a protruding from the rear housing body 27a and an engaging protrusion 26a provided at the front end of the support portion 25a. Furthermore, in the waterproof structure 75a, a first gasket 1 is provided on the rear housing 20a and forms the engaging protrusion 26a. The first gasket 1 is, for example, integrally formed with the rear housing 20a.

[0090] like Figure 10 As shown in Figure B, the front engaging portion 42a has a groove 49a provided in the front housing body 47a. The groove 49a clamps the rear engaging portion 22a from the inside and outside of the housing unit 3a. As the surface that contacts the first gasket 1, the groove 49a has a first contact surface 51a provided on the guide side where the rear engaging portion 22a is guided, and a second contact surface 52a provided on a deeper side than the first contact surface 51a. The second contact surface 52a is configured to be more concave than the first contact surface 51a. That is, the groove 49a can be regarded as a groove with a wide step on the deeper side.

[0091] For example, in the mid-engagement state, the first washer 1 (engagement protrusion 26a) is compressed due to the narrow space clamped by the first contact surface 51a on the guide side. On the other hand, as Figure 10 As shown in Figure C, in the engaged state, the first gasket 1 is accommodated within a wide space sandwiched by the deep second contact surface 52a, thereby alleviating stress compared to the state during engagement. Consequently, the first gasket 1 itself is compressed within the groove 49a of the front housing 40a, achieving a function of maintaining airtightness and self-holding. Furthermore, in Figure 10 In C, the front end of the groove 49a abuts against the rear housing body 27a of the support engagement protrusion 26a, which is the engagement state.

[0092] Thus, in the waterproof structure 75a, the stress-relieving part 5 serves as a clearance space 6 for the first gasket 1, which is compressed during the engagement process. Here, the clearance space 6 is formed by the second contact surface 52a being more recessed than the first contact surface 51a. Furthermore, the clearance space 6 is configured such that the first gasket 1 is compressed to the amount required to perform the waterproof function. Therefore, in the engaged state, the stress on the first gasket 1 is relieved by the clearance space 6 while maintaining the waterproof function. In addition, to release the engaged state (peel off), the first gasket 1 needs to contract from the clearance space 6 (stress increases), thus preventing unintentional disassembly.

[0093] Furthermore, in the waterproof structure 75a, an engaging protrusion 26a (first gasket 1) is sandwiched between the inside and outside of the groove 49a. As a result, the reaction force generated by the compression of the first gasket 1 acts symmetrically relative to the groove 49a. This cancels out the reaction force, preventing lateral pressure on the entire housing unit 3a.

[0094] Here, the dimensions of each part of the waterproof structure 75a are defined as follows. Furthermore, the front end and rear end refer to the upper and lower ends shown in the illustration. Additionally, the front housing 40a and the rear housing 20a are assumed to be in contact with each other on the reference plane.

[0095] Rear reference surface: The end face of the rear housing body 27a that abuts against the groove 49a.

[0096] Front reference plane: Front end of groove 49a

[0097] A1: Distance from the rear reference surface to the front end of the engaging protrusion 26a

[0098] A2: Distance from the rear reference surface to the rear end of the engaging protrusion 26a

[0099] A3: Distance from the front reference plane to the front end of the clearance space 6 (second contact surface 52a) (depth of the groove 49a)

[0100] A4: Distance from the front reference plane to the rear end of the clearance space 6 (second contact surface 52a)

[0101] A5: Width of support portion 25a

[0102] A6: Width of the engaging protrusion 26a

[0103] A7: Width of the groove 49a on the inlet side (spacing of the first contact surfaces 51a)

[0104] A8: Width of the deep side of groove 49a (spacing of the second contact surface 52a)

[0105] A1 < A3 (Condition CA1)

[0106] Based on condition (CA1), there is a clearance space 6 that ensures the movement of the first pad 1 in the engaged state after it is squeezed during engagement.

[0107] A2 > A4 (Condition CA2)

[0108] According to condition (CA2), in the engaged state, the first gasket 1 can reliably reach the clearance space 6, thereby achieving stress relief.

[0109] A6 > A8 > A7 (Condition CA3)

[0110] According to condition (CA3), in the engaged state, the first gasket 1 can be compressed from its natural state, while maintaining the engaged state through stress relief.

[0111] A7 = (A6 - A5) × 0.5 (Condition CA4)

[0112] According to condition (CA4), the compression amount of the first pad 1 used to release the engagement is 50%, which can improve the anti-detachment performance.

[0113] A8 = (A6 - A5) × 0.25 (Condition CA5)

[0114] According to condition (CA5), the compression amount of the first gasket 1 in the engaged state is 25%, which reliably maintains the waterproof performance. In addition, the compression amount under condition (CA5) can also be appropriately adjusted within a range of, for example, 10% to 40%.

[0115] In addition, all corners can be chamfered (C-surface machining) along the path that the first gasket 1 (engaging protrusion 26a) travels during assembly and disassembly.

[0116] In addition, such as Figure 10 As shown in Figure C, when the engaging protrusion 26a is inserted into the groove 49a, if the air inside the groove 49a is compressed, causing the pressure to increase, the force pushing the engaging protrusion 26a back will act, potentially preventing a proper engagement. Therefore, in the waterproof structure 75a, an air venting part 44a is provided in the front engaging part 42a to allow air to be discharged from the groove 49a during engagement. Here, the air venting part 44a is a through hole communicating with the interior of the groove 49a. This allows the rear engaging part 22a to engage properly with the front engaging part 42a.

[0117] in addition, Figure 10 D illustrates a structure that uses a waterproof construction 75a to hold the display screen 11 on the front housing 40a side. In this structure, a retainer 50a for pressing the display screen 11 is provided inside the rear housing body 27a. In this case, in the engaged state, the retainer 50a presses the display screen 11 from the rear. This allows the display screen 11 to fit tightly against the second gasket 2.

[0118] Figure 11 This is a schematic diagram illustrating another example of a waterproof structure based on the first gasket. (See diagram for example.) Figure 11The waterproof structure 75b shown has the following structure: when the engaging end is inserted into the space surrounded by the first gasket 1, the thickness of the first gasket 1 is intentionally changed so that the first gasket 1 can maintain the engaging end in the engaging state using restoring force (stress relief) while maintaining the waterproof function. The waterproof structure 75b has a rear housing 20b with a rear engaging portion 22b and a front housing 40b with a front engaging portion 42b. Furthermore, the rear housing 20b and the front housing 40b are assembled together to form the housing unit 3b.

[0119] like Figure 11 As shown in Figure A, the rear engaging portion 22b has a support portion 25b protruding from the rear housing body 27b and an engaging protrusion 26b provided at the front end of the support portion 25b. The engaging protrusion 26b is a structural part formed by expanding the front end of the support portion 25b, and is made of, for example, the same material as the rear housing body 27b or the support portion 25b.

[0120] like Figure 11 As shown in B, the front engaging portion 42b has a support groove 54b provided on the front housing body 47b and an engaging groove 46b formed on the inner side of the support groove 54b. Furthermore, in the waterproof structure 75b, a first gasket 1 is provided on the front housing 40b and forms the engaging groove 46b. The first gasket 1 is, for example, integrally formed with the front housing 40b.

[0121] The support groove 54b is a groove that opens towards the rear side of the front housing 40b and supports the first gasket 1. As a support surface supporting the first gasket 1 (engaging groove 46b), the support groove 54b has a first support surface 51b located on the guide side where the rear engaging portion 22b is inserted, and a second support surface 52b located deeper than the first support surface 51b. The second support surface 52b is configured to be more recessed than the first support surface 51b. In other words, the support groove 54b can be described as a groove with a wide step on the deeper side.

[0122] The engaging groove 46b is a groove that clamps the rear engaging portion 22b from the inner and outer sides of the housing unit 3b, and is constructed using a first gasket 1. A straight groove with a fixed width is formed in the first gasket 1, opening towards the rear side of the front housing 40b. This straight groove is the engaging groove 46b that clamps the rear engaging portion 22b. Furthermore, the first gasket 1 is disposed along the first support surface 51b and the second support surface 52b formed inside the support groove 54b. Therefore, it can be said that at the engaging groove 46b, the thickness of the first gasket 1 is increased by a step on the deeper side.

[0123] For example, at the start of engagement, the engagement protrusion 26b of the rear engagement portion 22b is guided into the engagement groove 46b, which serves as a straight slot. On the guiding side, the first washer 1 is disposed in a narrow space sandwiched by the first support surface 51b, and the thickness of the first washer 1 is smaller than that of the deeper side. Thus, during the middle of engagement, the thinner first washer 1 is compressed by the expansion portion of the engagement protrusion 26b.

[0124] On the other hand, such as Figure 11 As shown in Figure C, in the engaged state, the engaging protrusion 26b is guided to a predetermined position deep within the engaging groove 46b. On the deeper side, the first gasket 1 is positioned in a more spacious space sandwiched by the second support surface 52b, and the thickness of the first gasket 1 is greater than that on the guiding side. Therefore, in the engaged state, the thicker first gasket 1 is compressed by the expansion portion of the engaging protrusion 26b, just like on the guiding side. Furthermore, in... Figure 11 In C, the state in which the front end of the support groove 54b abuts against the rear housing body 27b of the support engagement protrusion 26b is the engagement state.

[0125] Therefore, at the front engaging portion 42b, the proportion of compression on the first gasket 1 at the deep side is relatively small compared to the guide side. Consequently, the stress on the first gasket 1 is reduced in the engaged state compared to the state during engagement. This means that the force exerted on the first gasket 1 by the engaging protrusion 26b is smaller in the engaged state compared to the state during engagement. Through this effect, the first gasket 1 is compressed by the engaging protrusion 26b at the deep side, achieving the function of maintaining airtightness and self-holding.

[0126] Thus, in the waterproof structure 75b, the stress-relieving part 5 is a thickened part 7 located inside the guide side of the rear engaging part 22b in the first gasket 1, and whose thickness is increased compared to the guide side. It can be said that the thickened part 7 is intentionally designed to increase the thickness of the first gasket 1 so that the proportion of compression of the first gasket 1 in the engaged state is reduced. Here, the second support surface 52b is recessed compared to the first support surface 51b, thereby forming the thickened part 7. Furthermore, the thickened part 7 is configured to compress the first gasket 1 with a compression amount sufficient to perform the waterproof function. Therefore, in the engaged state, the stress on the first gasket 1 is relieved while the thickened part 7 ensures the maintenance of the waterproof function range. In addition, to release the engaged state, a force is required to pull out the engaging protrusion 26b (i.e., a force to compress the thin portion of the first gasket 1), preventing unintentional disassembly.

[0127] Furthermore, in the waterproof structure 75b, the engaging protrusion 26b is clamped from the inside and outside by the engaging groove 46b (first gasket 1). As a result, the reaction force generated by the compression of the first gasket 1 acts symmetrically on the support groove 54b supporting the first gasket 1. Thus, the reaction forces cancel each other out, preventing lateral pressure from being generated on the entire housing unit 3b.

[0128] Here, the dimensions of each part of the waterproof structure 75b are defined as follows. The front housing 40b and the rear housing 20b are assumed to be in contact with each other on a reference plane.

[0129] Rear reference surface: The end face of the rear housing body 27b that abuts against the support groove 54b

[0130] Front reference surface: front end of support groove 54b

[0131] B1: Distance from the rear reference surface to the front end of the engaging protrusion 26b

[0132] B2: Distance from the rear reference surface to the rear end of the engaging protrusion 26b

[0133] B3: Distance from the front reference plane to the front end of the support groove 54b (depth of the support groove 54b)

[0134] B4: Distance from the front reference plane to the front end of the thickened part 7

[0135] B5: Distance from the front reference plane to the front end of the locking groove 46b (depth of the locking groove 46b)

[0136] B6: Width of support portion 25b

[0137] B7: Width of the engaging protrusion 26b

[0138] B8: Width of the inner side of the support groove 54b (spread of the second support surface 52b)

[0139] B9: Width of the guide side of the support groove 54b (split of the first support surface 51b)

[0140] B10: Width of the 46b groove

[0141] B1 < B5 < B3 …… (Condition CB1)

[0142] Condition (CB1) is a condition for receiving the engaging protrusion 26b into the engaging groove 46b.

[0143] B1 > B2 > B4 …… (Condition CB2)

[0144] By means of condition (CB2), the engaging protrusion 26b can be inserted into the deep side where the thickened portion 7 exists, thereby enabling the engaging protrusion 26b to perform its anti-dislodgement function.

[0145] B6≥B10 ……(Condition CB3)

[0146] Condition (CB3) is a condition for receiving the support portion 25b of the support engagement protrusion 26b into the engagement groove 46b. Furthermore, this condition allows the first gasket 1 to fit tightly around the support portion 25b, improving waterproof performance.

[0147] B8 > B9 > B7 > B10 …… (Condition CB4)

[0148] Condition (CB4) is a condition for properly compressing the first gasket 1. With this condition, the first gasket 1 can be compressed in a way that utilizes the anti-dislodgement function (stress relief) of the engaging protrusion 26b.

[0149] (B7 - B10) = (B9 - B10) × 0.5 (Condition CB5)

[0150] When the first gasket 1 is released from the locked state under condition (CB5), the compression amount becomes 50%, thereby improving the anti-detachment performance.

[0151] (B7 - B10) = (B8 - B10) × 0.25 (Condition CB6)

[0152] Under condition (CB6), the compression amount of the first gasket 1 in the engaged state becomes 25%, which reliably maintains the waterproof performance. In addition, the compression amount under condition (CA5) can also be appropriately adjusted within a range of, for example, 10% to 40%.

[0153] In addition, all corners can be chamfered (C-surface machining) along the path that the engaging protrusion 26b travels during assembly and disassembly.

[0154] In addition, such as Figure 11 As shown in Figure C, when the engaging protrusion 26b is inserted into the engaging groove 46b, the pressure inside the engaging groove 46b increases. That is, the pressure within the groove formed by the first gasket 1 increases. Therefore, in the waterproof structure 75b, an air vent (not shown) is provided on the rear engaging portion 22b to vent air from the engaging groove 46b during engagement. Here, the air vent is, for example, a groove formed along the engaging protrusion 26b and connected to the deep side of the engaging groove 46b. This allows the rear engaging portion 22b to properly engage with the front engaging portion 42b.

[0155] in addition, Figure 11 Figure D illustrates a structure employing a waterproof construction 75b and retaining the display screen 11 on the front housing 40b side. In this structure, with... Figure 10Similar to D, a retaining member 50b for pressing the display screen 11 is provided on the inner side of the rear housing body 27b. As a result, the display screen 11 can be tightly fitted to the second gasket 2.

[0156] Figure 12 This is a schematic diagram illustrating another example of a waterproof structure consisting of a first gasket. Figure 12 The waterproof structure 75c shown is constructed as follows: a first gasket 1 is fitted into a predetermined groove provided on the side wall of the housing component, and the stress relief of the first gasket 1 maintains a difficult-to-remove engagement state and waterproof function. The waterproof structure 75c utilizes, for example... Figure 10 The waterproof structure 75a shown is constructed using the outer half of the waterproof structure 75a. Alternatively, the waterproof structure 75c can be constructed using the inner half of the waterproof structure 75a. The waterproof structure 75c has a rear housing 20c with a rear engagement portion 22c and a front housing 40c with a front engagement portion 42c. Furthermore, the rear housing 20c and the front housing 40c are assembled to form a housing unit 3c.

[0157] like Figure 12 As shown in Figure A, the rear engaging portion 22c has a support portion 25c protruding from the rear housing body 27c and an engaging protrusion 26c provided at the front end of the support portion 25c. Furthermore, in the waterproof structure 75c, a first gasket 1 is provided on the rear housing 20c and forms the engaging protrusion 26c. Here, the first gasket 1 is provided from the front end of the support portion 25c to its outer peripheral surface, forming an outwardly protruding engaging protrusion 26c.

[0158] like Figure 12 As shown in B, the front engaging portion 42c has a side wall portion 45c provided on the front housing body 47c. The side wall portion 45c presses against the rear engaging portion 22c from the outside of the housing unit 3c. Furthermore, as the surface in contact with the first gasket 1, the side wall portion 45c has a first contact surface 51c provided on the guide side where the rear engaging portion 22c is guided, and a second contact surface 52c provided on a deeper side than the first contact surface 51c. The second contact surface 52c is configured to be more recessed than the first contact surface 51c. Thus, a stepped shape that is recessed deeper than the guide side is formed on the inner side of the side wall portion 45c.

[0159] For example, in the mid-engagement state, the first washer 1 (engagement protrusion 26c) is compressed by the first contact surface 51c on the guide side. On the other hand, as Figure 12 As shown in C, in the engaged state, the first gasket 1 is recessed into the recess (recessed space 6) formed by the deep second contact surface 52c, thereby easing the stress compared to the state during engagement.

[0160] Thus, in the waterproof structure 75c, the stress-relieving part 5 serves as a clearance space 6 to allow the first gasket 1, which is compressed during the engagement process, to avoid pressure. Here, the clearance space 6 is formed by making the second contact surface 52c more concave than the first contact surface 51c. Furthermore, the clearance space 6 is configured to compress the first gasket 1 with an amount of pressure sufficient to perform the waterproof function. As a result, the first gasket 1 itself is compressed by the stepped shape of the front housing 40c, thereby achieving the functions of maintaining airtightness and self-holding.

[0161] In addition, such as Figure 12 As shown in Figure C, in the waterproof structure 75c, due to the compression of the first gasket 1, an inward reaction force 78 acts on the rear housing 20c (engaging protrusion 26c), and an outward reaction force 77 acts on the front housing 40c (side wall portion 45c). This situation will be discussed later. Figure 13 The same applies to the waterproof structure 75d shown. Such reaction forces can be offset by creating a linearly symmetrical cross-sectional shape or by incorporating structural members that bear the reaction forces. Regarding this point, refer to... Figure 14 This will be discussed in detail later.

[0162] Here, the dimensions of each part of the waterproof structure 75c are defined as follows. Furthermore, it is assumed that the front housing 40c and the rear housing 20c are in contact with each other through a reference plane. And in the engaged state, it is assumed that the outer surfaces of the front housing 40c and the rear housing 20c form the same plane (assumed reference plane). It should be noted that due to the influence of reaction forces, etc., the assumed reference planes of the housings may not be the same.

[0163] Rear reference surface: The end face of the rear housing body 27c that abuts against the side wall portion 45c

[0164] Front reference plane: Front end of side wall portion 45c

[0165] Post-assumed reference plane: the outer side of the rear housing body 27c

[0166] Pre-assumed reference plane: the outer side of the sidewall portion 45c

[0167] C1: Distance from the rear reference plane to the front end of the engaging protrusion 26c

[0168] C2: Distance from the rear reference plane to the rear end of the engaging protrusion 26c

[0169] C3: Distance from the front reference plane to the front end of the clearance space 6 (second contact surface 52c)

[0170] C4: Distance from the front reference plane to the rear end of the clearance space 6 (second contact surface 52c)

[0171] C5: Distance from the assumed rear reference plane to the outer surface of the support portion 25c

[0172] C6: Distance from the rear assumed reference plane to the outer end of the engaging protrusion 26c

[0173] C7: Distance from the previously assumed reference plane to the first contact surface 51c

[0174] C8: Distance from the previously assumed reference plane to the second contact surface 52c

[0175] C1 < C3 …… (Condition C1)

[0176] Condition (CC1) ensures that the first pad 1, which is squeezed during engagement, has sufficient clearance space 6 to move in the engaged state.

[0177] C2 > C4 …… (Condition C2)

[0178] Under condition (CC2), the first gasket 1 can reliably avoid the clearance space 6 in the engaged state, thereby relieving stress.

[0179] C7 > C8 > (C5 - C6) ... (Condition CC3)

[0180] By using condition (CC3), it is possible to achieve a state where the first gasket 1 is compressed from the free state in the engaged state, and the engaged state is maintained by stress relief.

[0181] C7 = (C5 - C6) × 0.5 …… (Condition CC4)

[0182] Under condition (CC4), the compression amount of the first pad 1 used to release the lock is 50%, which can improve the anti-loosening performance.

[0183] C8 = (C5 - C6) × 0.25 …… (Condition CC5)

[0184] Under condition (CC5), the compression amount of the first gasket 1 in the engaged state is 25%, thereby reliably maintaining waterproof performance. Furthermore, the compression amount under condition (CC5) can be appropriately adjusted, for example, within the range of 10%–40%.

[0185] Furthermore, chamfering (C-surface machining) can also be performed on all corner portions along the path traversed when the first gasket 1 (engaging protrusion 26c) is installed or removed.

[0186] also, Figure 12 Figure D illustrates a structure in which the display screen 11 is held in place on the front housing 40c side using a waterproof structure 75c. In this structure, a retaining member 50c is provided on the inner side of the rear housing body 27c to press the display screen 11 together. This allows the display screen 11 to fit tightly against the second gasket 2.

[0187] Figure 13This is a schematic diagram illustrating another example of a waterproof construction employing a first gasket. Figure 13 The waterproof structure 75d shown has the following structure: when the engaging end is inserted into the space surrounded by the first gasket 1, by intentionally changing the thickness of the first gasket 1, the first gasket 1 can retain the engaging end in the engaging state by means of restoring force (stress relief), while maintaining the waterproof function. The waterproof structure 75d is, for example, based on... Figure 11 The waterproof structure 75b shown is constructed from the outer half. Alternatively, the inner half of the waterproof structure 75b can be used to construct the waterproof structure 75d. The waterproof structure 75d includes a rear housing 20d with a rear engagement portion 22d and a front housing 40d with a front engagement portion 42d. Furthermore, by assembling the rear housing 20d and the front housing 40d, a housing unit 3d is formed.

[0188] like Figure 13 As shown in A, the rear engaging portion 22d has: a support portion 25d protruding from the rear housing body 27d; and an engaging protrusion 26d provided at the front end of the support portion 25d. The engaging protrusion 26d is a structural part formed by expanding the front end of the support portion 25d outward.

[0189] like Figure 13 As shown in B, the front engaging portion 42d has: a side wall portion 45d provided on the front housing body 47d and an engaging receiving portion 46d formed on the inner side of the side wall portion 45d. Furthermore, in the waterproof structure 75d, a first gasket 1 is provided on the front housing 40d and forms the engaging receiving portion 46d. The first gasket 1 is, for example, integrally formed with the front housing 40d.

[0190] The side wall portion 45d supports the first gasket 1 (engaging receiving portion 46d) and presses the rear engaging portion 22d against the outside of the housing unit 3d via the first gasket 1. As the surface supporting the first gasket 1, the side wall portion 45d has a first support surface 51d and a second support surface 52d, wherein the first support surface 51d is located on the receiving side where the rear engaging portion 22d is received, and the second support surface 52d is located at a deeper position than the first support surface 51d. The second support surface 52d is configured to be more recessed than the first support surface 51d. Thus, a stepped shape that is deeper than the receiving side is formed on the inner side of the side wall portion 45d.

[0191] The engaging receiving portion 46d is the part that receives the engaging protrusion 26d of the rear engaging portion 22d, and it is constructed using a first washer 1. The first washer 1 is configured such that the engaging surface 55d that contacts the engaging protrusion 26d is a plane along the guide direction (vertical direction in the figure) of the engaging protrusion 26d. Furthermore, the first washer 1 is arranged along the first support surface 51d and the second support surface 52d formed on the side wall portion 45d. Therefore, at the engaging receiving portion 46d, it can be said that the thickness of the first washer 1 is a step thicker on the deeper side. In addition, the engaging receiving portion 46d has a bottom portion 56d for receiving the front end of the engaging protrusion 26d. The bottom portion 56d is, for example, a surface orthogonal to the engaging surface 55d.

[0192] For example, at the start of engagement, the engagement protrusion 26d is introduced simultaneously with the smaller portion of the compression engagement receiving portion 46d (first gasket 1). On the other hand, as Figure 13 As shown in Figure C, in the engaged state, the engaging protrusion 26d is guided to a predetermined position on the deep side of the engaging receiving portion 46d. Since the thickness of the first gasket 1 on the deep side is greater than that on the guiding side, the ratio of compression of the first gasket 1 relative to the guiding side is relatively smaller. As a result, in the engaged state, the stress on the first gasket 1 is alleviated compared to the state during the engagement.

[0193] Thus, in the waterproof structure 75d, the stress-relieving portion 5 is a thickened portion 7 located deeper than the insertion side of the first gasket 1, where the rear engagement portion 22d is inserted, and making the thickness of the first gasket 1 greater than at the insertion side. Here, the thickened portion 7 is formed by the second support surface 52d being recessed relative to the first support surface 51d. Furthermore, the thickened portion 7 is configured to compress the first gasket 1 with an amount of pressure that enables it to perform its waterproof function. As a result, the first gasket 1 is compressed by the engagement protrusion 26d, which is inserted to the deeper side, achieving the function of maintaining airtightness and self-holding.

[0194] Here, the dimensions of each part of the waterproof structure 75d are defined as follows. Furthermore, it is assumed that the front housing 40d and the rear housing 20d are in contact with each other on a reference plane. Also, in the engaged state, it is assumed that the outer surfaces of the front housing 40d and the rear housing 20d form the same plane (the assumed reference plane).

[0195] Rear reference surface: The end face of the rear housing body 27d that contacts the side wall portion 45d.

[0196] Front reference plane: Front end of sidewall 45d

[0197] Post-assumed reference plane: the outer side of the rear housing body 27d

[0198] Pre-assumed reference plane: the outer side of the sidewall portion 45d

[0199] D1: Distance from the rear reference plane to the front end of the engaging protrusion 26d

[0200] D2: Distance from the rear reference plane to the rear end of the engaging protrusion 26d

[0201] D3: Distance from the front reference plane to the front end (bottom plane 56d) of the engaging and receiving part 46d.

[0202] D4: Distance from the front reference plane to the front end of the thickened part 7

[0203] D5: Distance from the rear assumed reference plane to the outer surface of the support portion at 25d.

[0204] D6: The distance from the outer side of the support portion 25d to the outer end of the engaging protrusion 26d.

[0205] D7: Distance from the previously assumed datum plane to the mating surface 55d

[0206] D8: Distance from the second support surface 52d to the engagement surface 55d

[0207] D9: Distance from the first support surface 51d to the engagement surface 55d

[0208] D1 < D3 (Condition CD1)

[0209] Condition (CD1) is a condition for making the engaging receiving part 46d receive the entire engaging protrusion 26.

[0210] D1>D2>D4 (Condition CD2)

[0211] By means of condition (CD2), the engaging protrusion 26d is inserted into the deep side where the thickened portion 7 exists, thereby enabling the engaging protrusion 26d to perform its anti-detachment function.

[0212] D6 < D9 (Condition CD3)

[0213] Condition (CD3) is the condition used to compress the first gasket 1.

[0214] D6 = D9 × 0.5 (Condition CD4)

[0215] Under condition (CD4), the compression amount of the first gasket 1 used to release the engagement is 50%, thereby improving the anti-detachment performance.

[0216] D6 = D8 × 0.25 (Condition CD5)

[0217] Under condition (CD5), the compression amount of the first gasket 1 in the engaged state is 25%, thereby reliably maintaining the waterproof performance. Furthermore, the compression amount under condition (CD5) can be appropriately adjusted, for example, within the range of 10% to 40%.

[0218] In addition, all corners can be chamfered (C-surface machining) along the path that the engaging protrusion 26d travels during assembly and disassembly.

[0219] in addition, Figure 13 Figure D illustrates a structure in which a waterproof construction 75d holds the display screen 11 on the front housing 40d side. In this structure, a retaining member 50d for pressing the display screen 11 is provided on the inner side of the rear housing body 27d. This allows the display screen 11 to fit tightly against the second gasket 2.

[0220] The following is an explanation of... Figure 12 The waterproof construction shown is 75c and Figure 13 In the waterproof structure 75d shown, there is a reaction force generated by compressing the first gasket 1. Here, the reaction force acting on the front housing (front housing 40c and 40d) by compressing the first gasket 1 is denoted as reaction force 77, and the reaction force acting on the rear housing (rear housing 20c and 20d) by compressing the first gasket 1 is denoted as reaction force 78.

[0221] For example, such as Figure 12 As shown in Figure C, in the waterproof structure 75c, due to the compression of the first gasket 1, the reaction force 78 acts inward on the rear housing 20c (engaging protrusion 26c), and the reaction force 77 acts outward on the front housing 40c (side wall portion 45c). Additionally, as... Figure 13 As shown in Figure C, in the waterproof structure 75d, due to the compression of the first gasket 1, a reaction force 78 acts inward on the rear housing 20d (engaging protrusion 26d), and a reaction force 77 acts outward on the front housing 40d (sidewall portion 45d). Therefore, the rear housings 20c and 20d are subjected to inward lateral pressure, and the front housings 40c and 40d are subjected to outward lateral pressure. If this lateral pressure is not eliminated, the housing may deviate from its proper engagement position, or the compression of the first gasket 1 may be less than expected, resulting in reduced waterproof performance.

[0222] Figure 14 This is a schematic diagram illustrating the structure used to counteract the reaction force. As a method to counteract the reaction force generated by compressing the first gasket 1, one approach is to set the cross-sectional shape to a line-symmetrical shape. For example, this method involves configuring the waterproof structure into a line-symmetrical cross-sectional shape along the direction of action of the reaction force 78 or 77. For instance, the same cross-sectional shape can also be used throughout the circumference of the shell. Figure 14 In section A, the waterproof structure 75c is configured to make the cross-sectional structure linearly symmetrical. Similarly, in Figure 14 The waterproof structure 75d in section B is configured to make the cross-sectional structure linearly symmetrical.

[0223] For example in Figure 14In A, the reaction force 78 of the left engaging protrusion 26c and the reaction force 78' of the right engaging protrusion 26c cancel each other out, thus canceling out the overall reaction force on the rear housing 20c. Furthermore, in Figure 14 In A, the reaction force 77 on the left sidewall 45c and the reaction force 77' on the right sidewall 45c cancel each other out, thus canceling out the overall reaction force on the front housing 40c. Similarly, in Figure 14 In section B, the reaction forces 78 and 78' of the left and right engaging protrusions 26d cancel each other out, thus canceling out the overall reaction force on the rear housing 20d. Furthermore, in Figure 14 In section B, the reaction forces 77 and 77' on the left and right sidewalls 45d cancel each other out, thus canceling out the overall reaction force on the front housing 40d. Therefore, since no components are needed to cancel out the reaction forces, the engagement mechanism can be compactly constructed.

[0224] Furthermore, as another method to counteract the reaction force, one example is the provision of a back support member 79, which presses against the member bearing the reaction force from the side opposite to the side where the reaction force acts. Here, a back support member 79 for pressing against the rear housing is provided on the front housing side. In this embodiment, the back support member 79 corresponds to an engagement auxiliary part.

[0225] exist Figure 14 In section C, a back support member 79c is provided on the front engaging portion 42c constituting the waterproof structure 75c. In the engaged state, the back support member 79c presses against the rear engaging portion 22c (engaging protrusion 26c) from the side opposite to the side wall portion 45c. The engaging protrusion 26c bears an inward reaction force 78. Therefore, the inward force 77' from the engaging protrusion 26c acts on the back support member 79c, and the outward reaction force 78' from the back support member 79c acts on the engaging protrusion 26c. Thus, the inward reaction force 78 and the outward reaction force 78' acting on the rear housing 20c cancel each other out, while the outward reaction force 77 and the inward force 77' acting on the front housing 40c cancel each other out.

[0226] Similarly, in Figure 14In section D, a back support member 79d is provided on the front engaging portion 42d constituting the waterproof structure 75d. In the engaged state, the back support member 79d abuts against the rear engaging portion 22d (engaging protrusion 26d) from the side opposite to the side wall portion 45d. The engaging protrusion 26d bears an inward reaction force 78, so an inward force 77' from the engaging protrusion 26d acts on the back support member 79d, and an outward reaction force 78' from the back support member 79d acts on the engaging protrusion 26d. Thus, the inward reaction force 78 acting on the rear housing 20d and the outward reaction force 78' cancel each other out, while the outward reaction force 77 acting on the front housing 40d and the inward force 77' cancel each other out.

[0227] Thus, by providing the back support member 79, the reaction force acting on the rear or front housing can be counteracted within the engaging mechanism. For example, when it is difficult to construct a linearly symmetrical cross-section, such a back support member 79 can also be used to counteract the reaction force. Additionally, it can be used with... Figure 14 C and Figure 14 In contrast to the structure shown in D, a back support member 79 is provided on the rear housing side to press against the front housing. In this case, for example, the back support member 79 is provided on the rear housing to press against the side wall portions (side wall portions 45c and 45d) of the front housing from the outside. Even with such a structure, the reaction force can be counteracted inside the engaging mechanism.

[0228] [How to install and remove the outer strap]

[0229] The following describes the settings at the reference point. Figures 1 to 9 The method for assembling and disassembling the outer periphery of the housing unit 3 will be explained. Figure 15 This is a schematic diagram showing a structural example of the outer peripheral side 70 of the housing unit 3 with the outer peripheral band 60 installed.

[0230] Figure 15 A is a plan view showing the electronic device 100 (housing unit 3) viewed from the rear with the outer peripheral band 60 installed. The rear housing 20 is omitted here. The outer peripheral band 60 is provided on the outer peripheral side 70 of the housing unit 3. In this embodiment, the outer peripheral side 70 is formed by the front housing 40, but this technology is equally applicable even if the outer peripheral side 70 is formed by the rear housing 20.

[0231] The outer peripheral belt 60 is an elastically deformable strip-shaped member. For example, the outer peripheral belt 60 can be a member formed from a thin metal such as aluminum into a rectangular frame shape. Alternatively, for example, a resin material such as ABS resin can be used to construct the outer peripheral belt 60. The width of the outer peripheral belt 60 is set to be the same as or smaller than the width of the outer peripheral side surface 70 to facilitate its accommodation within the outer peripheral side surface 70.

[0232] The outer peripheral side 70 is a side formed on the outer periphery of the housing unit 3. In this embodiment, the rear outer peripheral end 23 (refer to) formed by the rear housing 20 Figure 4 (etc.) and the front outer peripheral end 43 formed by the front housing 40 (refer to) Figure 5 The outer periphery (etc.) is configured to protrude outwards compared to the outer peripheral side 70. Thus, the outer periphery of the housing unit 3 becomes a groove-like structure with the outer peripheral side 70 as its base. The outer peripheral band 60 is mounted to the outer peripheral side 70 in a manner that embeds into this groove-like structure.

[0233] like Figure 15 As shown in Figure A, the outer peripheral side surface 70 has a mounting surface 71 and a pair of notches 72. The mounting surface 71 is the surface of the outer peripheral side surface 70 that forms the portion other than the notches 72. For example, the outer peripheral band 60 is held in contact with the mounting surface 71. Furthermore, the rear outer peripheral end 23 and the front outer peripheral end 43 are configured to protrude approximately equal in length to the thickness of the outer peripheral band 60, based on the mounting surface 71. Therefore, in the normal state, the outer peripheral band 60 is almost invisible from the thickness direction of the housing unit 3.

[0234] In the shell unit 3 with a rectangular planar shape, a pair of notches 72 are provided at diagonal positions and avoid the outer perimeter band 60. Figure 15 Figure A shows the notch 72 formed in the upper left corner when viewing the electronic device 100 from the rear. Furthermore, another notch 72 is provided on the lower right side of the electronic device 100, diagonally opposite to the notch 72. This pair of notches 72 is designed to avoid obstructing the outer peripheral belt 60 during assembly and disassembly.

[0235] like Figure 15 As shown in Figure A, the notch 72 is formed in an L-shaped area including the corner of the outer peripheral side 70, and is recessed inward from the mounting surface 71. Furthermore, steps are formed at both ends of the notch 72 between it and the mounting surface 71. In normal operation, the outer peripheral band 60 does not contact the notch 72. The depth of the notch 72 is, for example, set to be approximately equal to the thickness of the outer peripheral band 60, but is not limited thereto; it can be appropriately set according to the dimensions of the housing unit 3, etc., so that the outer peripheral band 60 can be attached and detached.

[0236] like Figure 15 As shown in Figure B, when the outer peripheral band 60 is pressed inward at the corner where the notch 72 is provided, the outer peripheral band 60 will avoid contact with the notch 72 and move inward. Furthermore, since the outer peripheral band 60 is not fixed to the housing unit 3, it will lift up in both the long and short sides, using the steps formed at both ends of the notch 72 as fulcrums. As a result, for example... Figure 15 As shown in C, at the corner where the notch 72 is not provided, the outer peripheral band 60 will detach from the mounting surface 71 and bulge outwards.

[0237] Figure 16 This is a schematic diagram illustrating the assembly and disassembly method of the outer peripheral belt. When disassembling the outer peripheral belt 60, as follows... Figure 16 As shown, the outer peripheral band 60 is pressed inwards on both sides of the diagonal portion where the notch 72 is provided (the upper left and lower right corners in the figure). At this time, the outer peripheral band 60 will bulge on the diagonal portion where the notch 72 is not provided (the upper right and lower left corners in the figure).

[0238] In this configuration, because the outer peripheral band 60 avoids the notch 72 at both diagonal portions, the amount of bulging of the outer peripheral band 60 is greater compared to pressing only one corner portion. This allows for the bulging amount required to remove the outer peripheral band 60. By lifting the outer peripheral band 60 upwards from this bulge, it can be removed from the housing unit 3. Conversely, when only one corner portion of the outer peripheral band 60 is pressed, the bulging amount is too small, making it impossible to remove the outer peripheral band 60.

[0239] Furthermore, when assembling the outer peripheral belt 60, for example, with one corner portion of the outer peripheral belt 60 having the notch 72 attached to the housing unit 3, the corner portion diagonally opposite to the portion attached to the housing unit 3 is pressed, causing the outer peripheral belt 60 to be fitted into the outer peripheral side surface 70 of the housing unit 3. This allows for easy assembly of the outer peripheral belt 60.

[0240] Thus, by providing two notches 72 at opposite corners, unintentional disassembly of the electronic device 100 can be prevented. For example, although it is conceivable that the corners of the electronic device 100 might be crushed when it falls, the outer peripheral band 60 will not detach even if only one corner with the notch 72 is pressed. Furthermore, the outer peripheral band 60 is difficult to remove if the designated opposite corners are not pressed simultaneously. This helps prevent disassembly outside of the proper disassembly procedure. Therefore, accidental disassembly of the electronic device 100 can be avoided.

[0241] Furthermore, the outer peripheral band 60 can shield the engagement points of the rear engagement portion 22 and the front engagement portion 42, as well as the engagement points of the hook portion 28 and the hook receiving portion 48. This prevents contamination and damage to the engagement points.

[0242] Furthermore, when the outer peripheral band 60 is removed, a step (i.e., the rear outer peripheral end 23 and the front outer peripheral end 43) connecting the outer peripheral side 70 to the rear housing 20 and the front housing 40 is exposed. The housing unit 3 can be easily disassembled by gripping this step with a fingertip. From another perspective, with the outer peripheral band 60 installed, the trigger shape for disassembling the housing unit 3 is obscured. This reliably prevents, for example, unintentional disassembly of the housing unit 3.

[0243] [Pressure regulating valve]

[0244] In this embodiment, the above-described waterproof structure (e.g., Figure 10 The waterproof structure 75a shown Figure 11 The waterproof structure 75b shown Figure 12 The waterproof structure shown is 75c. Figure 13 The waterproof structure shown (75d, etc.) maintains the airtightness of the shell unit 3. When using such a waterproof terminal in an atmospheric environment, the shell may expand / contract due to changes in external air pressure. Especially in environments such as mountain climbing or aircraft cabins, the low air pressure can cause the terminal to expand, leading to an accident that compromises the airtightness.

[0245] Therefore, in this embodiment, a pressure regulating valve is provided in the housing unit 3 to make the pressure inside and outside the terminal the same. Figure 17 This is a schematic perspective view showing a structural example of a pressure regulating valve. Here, the pressure regulating valve 80 is located on the upper side of the rear housing 20 within the housing unit 3. Furthermore, there are no restrictions on the location of the pressure regulating valve 80.

[0246] The pressure regulating valve 80 includes a valve body 81, a valve fixing part 82, a discharge part 83, a release groove 84, and an operating hole 85. The valve body 81 is an elongated, plate-shaped elastic member disposed along the upper side of the rear housing 20. The valve fixing part 82 is used to fix one end of the valve body 81 to the rear housing 20. The discharge part 83 is located on the lower side of the valve body 81 and forms a discharge port 86 penetrating the side of the rear housing 20. The discharge part 83 is made of a material such as an elastomer to ensure a tight fit with the valve body 81. The release groove 84 is a groove located on the lower side of the valve body 81, sandwiching the discharge part 83 on the opposite side of the valve fixing part 82. The operating hole 85 is a through hole penetrating the front housing 40 and is formed opposite to the release groove 84.

[0247] Figure 18 This is a schematic diagram used to illustrate the operation of a pressure regulating valve. Figure 18 Figure A shows the state of the pressure regulating valve 80 during the venting operation. For example, when the pressure inside the housing unit 3 rises, pressure is applied to the outlet 86, and the valve body 81 is pushed upward. This creates a gap between the outlet 86 and the valve body 81, allowing air 8 inside the housing unit 3 to be vented through this gap, thereby reducing the pressure.

[0248] Furthermore, when the external pressure is high, the valve body 81 remains in close contact with the discharge section 83, and the discharge port 86 is closed. Therefore, the valve body 81 basically only opens the discharge port 86 when the pressure inside the housing unit 3 is high. As a result, the interior of the housing unit 3 is basically maintained at a normal pressure with the same pressure as the outside, or at a negative pressure lower than the external pressure.

[0249] The pressure regulating valve 80 functions as an exhaust valve to release the pressure inside the housing unit 3 to the outside. Specifically, the pressure regulating valve 80 releases air from inside the housing unit 3 to the outside, reducing it to normal to negative pressure. This allows for the release of internal air, for example, when the external pressure is low (such as during mountain climbing). Furthermore, internal air can be released even when the housing unit 3 is pressed. Additionally, air that expands due to heat generation in the internal unit 10 of the housing unit 3 can also be released to the outside. This prevents the internal pressure from becoming too high and compromising the airtightness of the housing unit.

[0250] Figure 18 Figure B shows the state of the pressure regulating valve 80 during the opening operation. Here, the opening operation refers to the action of forcibly opening the discharge port 86 of the pressure regulating valve 80, so that the pressure inside the housing unit 3 becomes atmospheric pressure. During the opening operation, with the outer peripheral belt 60 removed, the rod-shaped component is inserted into the operating hole 85, pressing the valve body 81 into the release groove 84. As a result, a gap can be forcibly formed between the valve body 81 and the discharge part 83, allowing air 8 to be drawn in from the outside and the internal pressure to become atmospheric pressure.

[0251] Thus, the operating port 85 and release groove 84 provided in the pressure regulating valve 80 function as an opening mechanism for introducing air into the housing unit 3 by operating the housing unit 3 from the outside.

[0252] For example, as Figure 18 The exhaust valve shown in Figure A operates to maintain a relationship where the internal pressure is less than the external pressure. However, when disassembling housing unit 3, it is anticipated that disassembly will not be easy due to the pressure exerted by atmospheric pressure. Therefore, in this embodiment, when disassembling housing unit 3, air can be allowed to flow in from the outside by utilizing the opening mechanism of the pressure regulating valve 80. This makes the internal and external pressures of housing unit 3 equal, and the atmospheric pressure acting on the gasket is canceled out. As a result, housing unit 3 can be easily disassembled.

[0253] In the electronic device 100 described in this embodiment, either the rear engaging portion 22 provided in the rear housing 20 and having an engaging protrusion 26, or the front engaging portion 42 provided in the front housing 40 and receiving the engaging protrusion 26, is composed of a first gasket 1. In the engaged state, the first gasket is maintained in a compressed state. Furthermore, in the engaged state, the stress-relieving portion 5 provided in the front engaging portion 42 alleviates the stress acting on the first gasket 1 compared to the state during engagement. As a result, the engaging state is maintained by the restoring force of the first gasket 1, thereby maintaining waterproof performance while achieving an electronic device that is easy to assemble and disassemble.

[0254] Generally, a method is known for using waterproof double-sided tape or adhesive as a waterproofing component. For example, when disassembling components assembled with waterproof double-sided tape, the components are heated to approximately 80°C to 90°C to peel off the tape. In this case, the tape may break, requiring replacement. Furthermore, waterproof double-sided tape is a very thin and long component, requiring specialized clamps for proper application. Additionally, when using adhesives, for example, if the adhesion is high, the component may be damaged, sometimes necessitating replacement. Moreover, specialized equipment is required to apply the adhesive. Therefore, when using waterproof double-sided tape or adhesive, assembling or disassembling the equipment is difficult for ordinary users.

[0255] Furthermore, the use of gaskets as waterproofing components is also known. In this case, a mechanism for compressing the gasket is provided in the component where the gasket is installed. Figure 19 This is a schematic diagram showing a structural example of an electronic device 101 listed as a comparative example. In this electronic device 101, a gasket 112 is arranged annularly between a rear housing 110 and a front housing 111. The rear housing 110 and the front housing 111 are fixed to each other with screws by sandwiching the gasket 112 in the middle.

[0256] Therefore, if the waterproof mechanism using gaskets is achieved through screw fixing or similar methods, even ordinary users can disassemble or assemble the device with just a screwdriver or similar tools. On the other hand, while the necessary compression (compression pressure) can be obtained near the screw fastener, the compression may decrease at locations away from the screw due to component deflection. In this case, the airtightness provided by the gasket will be reduced, potentially leading to a deterioration in waterproof performance.

[0257] In this embodiment, either the rear engaging portion 22 or the front engaging portion 42 is composed of a first gasket 1. Furthermore, a stress-relieving portion 5 (avoidance space 6 or thickened portion 7) is provided on the front engaging portion 42, which is used to relieve stress on the first gasket 1 within the range where the first gasket 1 can maintain its waterproof performance. Thus, the airtightness can be maintained and self-retaining functions can be achieved by utilizing the elastic deformation of the first gasket 1 itself.

[0258] Therefore, during disassembly, only the rear housing 20 needs to be separated from the front housing 40 to remove it without damaging the first gasket 1. Furthermore, during assembly, the first gasket 1 does not need to be separately installed; a waterproof structure is formed simply by mounting the front housing 40 onto the rear housing 20. Additionally, when the housings are assembled (in the engaged state), the first gasket 1 remains in a state where it can maintain its waterproof performance on its own. This avoids the situation where local compression of the first gasket 1 leads to a decrease in the airtightness of other parts. As a result, waterproof function can be maintained both during disassembly and assembly, and after assembly.

[0259] Furthermore, the electronic device 100 can be assembled and disassembled without the use of adhesives, double-sided tape, screws, etc. This allows users to replace internal components themselves, thus addressing needs such as right-to-repair. Additionally, since no special equipment or tools are required for manufacturing or repair, the equipment investment needed to manufacture the electronic device 100 can be reduced.

[0260] Among the various feature portions involved in the present technology described above, at least two feature portions can also be combined. That is, the various feature portions described in each embodiment can be arbitrarily combined without being limited by each embodiment. In addition, the various effects described above are merely examples and are not limiting; other effects can also be achieved.

[0261] In this disclosure, the concepts of "same", "equal", and "orthogonal" include "substantially the same", "substantially equal", and "substantially orthogonal". For example, it also includes states within a predetermined range (e.g., a range of ±10%) based on "completely identical", "completely equal", and "completely orthogonal".

[0262] Alternatively, this technology can also be configured as follows: (1) An electronic device comprising: The first housing has a first engaging portion having an engaging protrusion formed thereon; The second housing has a second engaging portion that receives the engaging protrusion and engages with the first engaging portion; and The first gasket constitutes either the first engaging portion or the second engaging portion. The first engaging portion and the second engaging portion are configured to maintain the first gasket in a compressed state in the engaged state after engagement is completed. The second engaging portion has a stress-relieving portion that reduces the stress acting on the first gasket in the engaging state compared to the state during engagement.

[0263] (2) The electronic device as described in (1), wherein, The stress-relieving portion reduces the amount of compression on the first gasket in the engaged state compared to the state during the engagement.

[0264] (3) The electronic device as described in (1) or (2), wherein, The first gasket is disposed at the first engaging portion. The stress-relieving section is a clearance space to avoid the first gasket being squeezed during the engagement process.

[0265] (4) The electronic device as described in (3), wherein, The second engaging portion has a first contact surface and a second contact surface as surfaces that contact the first gasket. The first contact surface is located on the inlet side where the first engaging portion is inserted, and the second contact surface is located further inward than the first contact surface. The second contact surface forms the clearance space by being more concave than the first contact surface.

[0266] (5) The electronic device as described in (1) or (2), wherein, The first gasket is disposed at the second engaging portion. The stress-relieving portion is a thickened portion, which is located in the first gasket at a position further inward than the inlet side into which the first engaging portion is introduced, and increases the thickness of the first gasket compared to the inlet side.

[0267] (6) The electronic device as described in (5), wherein, The second engaging portion has a first supporting surface and a second supporting surface as surfaces supporting the first gasket. The first supporting surface is disposed on the inlet side where the first engaging portion is inserted, and the second supporting surface is disposed at a position further inward than the first supporting surface. The first gasket is disposed along the first support surface and the second support surface. The thickened portion is formed by the second support surface being more recessed than the first support surface.

[0268] (7) The electronic device as described in any one of (1) to (6), wherein, The first housing and the second housing are assembled together to form a housing unit. The second engaging portion has a groove that clamps the first engaging portion from the inside and outside of the housing unit.

[0269] (8) The electronic device as described in (7), wherein, At least one of the first engaging portion and the second engaging portion has an air venting portion that vents air from the groove during engagement.

[0270] (9) The electronic device as described in any one of (1) to (6), wherein, The first housing and the second housing are assembled together to form a housing unit. The second engaging portion has a sidewall portion that presses against the first engaging portion from either the inner or outer side of the housing unit.

[0271] (10) The electronic device as described in (9), wherein, The second engaging portion has an engaging auxiliary portion that presses against the first engaging portion from the side opposite to the sidewall portion in the engaged state.

[0272] (11) The electronic device as described in any one of (1) to (10), wherein, The second housing has an opening formed by the second engaging portion. The electronic device further includes an exposed component mounted on the second housing in a manner that exposes from the opening, and a second gasket disposed between the second housing and the exposed component. The first engaging portion presses against the exposed part by pressing it against the second gasket in the engaged state.

[0273] (12) The electronic device as described in any one of (1) to (11), wherein, One of the first engaging portion and the second engaging portion has a hook portion that is different from the engaging mechanism using the first gasket. The other of the first engaging portion and the second engaging portion has a hook receiving portion that receives the hook portion.

[0274] (13) The electronic device as described in any one of (1) to (12), wherein, The first housing and the second housing are assembled together to form a housing unit. Either the first engaging portion or the second engaging portion forms the outer peripheral side surface of the housing unit. The electronic device also includes a peripheral band configured to cover the outer peripheral side.

[0275] (14) The electronic device as described in (13), wherein, The shell unit is a plate-like structure with a rectangular planar shape. The outer peripheral side has a pair of notches located at diagonal positions to avoid the outer peripheral band.

[0276] (15) The electronic device as described in any one of (1) to (14), wherein, The first housing and the second housing are assembled together to form a housing unit. The housing unit has an exhaust valve that releases internal pressure to the outside.

[0277] (16) The electronic device as described in (15), wherein, The exhaust valve has an opening mechanism that allows air to be introduced into the interior of the housing unit through operation from outside the housing unit.

[0278] (Symbol Explanation)

[0279] 1…First gasket

[0280] 2…Second gasket

[0281] 3, 3a, 3b, 3c, 3d… Shell Units

[0282] 5…Stress Relief Section

[0283] 6… Avoidance space

[0284] 7… Thickened section

[0285] 20, 20a, 20b, 20c, 20d… Rear shell

[0286] 22, 22a, 22b, 22c, 22d… Rear engagement section

[0287] 26, 26a, 26b, 26c, 26d… engaging protrusions

[0288] 40, 40a, 40b, 40c, 40d...front shell

[0289] 42, 42a, 42b, 42c, 42d… Front engagement part

[0290] 46d… Connecting part

[0291] 46, 46b… Kahegou section

[0292] 49a…Gutter

[0293] 60…peripheral zone

[0294] 79…back support components

[0295] 80… Pressure regulating valve

[0296] 100…electronic devices

Claims

1. An electronic device comprising: The first housing has a first engaging portion having an engaging protrusion formed thereon; The second housing has a second engaging portion that receives the engaging protrusion and engages with the first engaging portion; and The first gasket constitutes either the first engaging portion or the second engaging portion. in, The first engaging portion and the second engaging portion are configured to maintain the first gasket in a compressed state in the engaged state after engagement is completed. The second engaging portion has a stress-relieving portion that reduces the stress acting on the first gasket in the engaging state compared to the state during engagement.

2. The electronic device as claimed in claim 1, wherein, The stress-relieving portion reduces the amount of compression on the first gasket in the engaged state compared to the state during the engagement.

3. The electronic device as claimed in claim 1, wherein, The first gasket is disposed at the first engaging portion. The stress-relieving section is a clearance space to avoid the first gasket being squeezed during the engagement process.

4. The electronic device as claimed in claim 3, wherein, The second engaging portion has a first contact surface and a second contact surface as surfaces that contact the first gasket. The first contact surface is located on the inlet side where the first engaging portion is inserted, and the second contact surface is located further inward than the first contact surface. The second contact surface forms the clearance space by being more concave than the first contact surface.

5. The electronic device as claimed in claim 1, wherein, The first gasket is disposed at the second engaging portion. The stress-relieving portion is a thickened portion, which is located in the first gasket at a position further inward than the inlet side into which the first engaging portion is introduced, and increases the thickness of the first gasket compared to the inlet side.

6. The electronic device as claimed in claim 5, wherein, The second engaging portion has a first supporting surface and a second supporting surface as surfaces supporting the first gasket. The first supporting surface is disposed on the inlet side where the first engaging portion is inserted, and the second supporting surface is disposed at a position further inward than the first supporting surface. The first gasket is disposed along the first support surface and the second support surface. The thickened portion is formed by the second support surface being more recessed than the first support surface.

7. The electronic device as claimed in claim 1, wherein, The first housing and the second housing are assembled together to form a housing unit. The second engaging portion has a groove that clamps the first engaging portion from the inside and outside of the housing unit.

8. The electronic device as claimed in claim 7, wherein, At least one of the first engaging portion and the second engaging portion has an air venting portion that vents air from the groove during engagement.

9. The electronic device as claimed in claim 1, wherein, The first housing and the second housing are assembled together to form a housing unit. The second engaging portion has a sidewall portion that presses against the first engaging portion from either the inner or outer side of the housing unit.

10. The electronic device of claim 9, wherein, The second engaging portion has an engaging auxiliary portion that presses against the first engaging portion from the side opposite to the sidewall portion in the engaged state.

11. The electronic device as claimed in claim 1, wherein, The second housing has an opening formed by the second engaging portion. The electronic device further includes an exposed component mounted on the second housing in a manner that exposes from the opening, and a second gasket disposed between the second housing and the exposed component. The first engaging portion presses against the exposed part by pressing it against the second gasket in the engaged state.

12. The electronic device of claim 11, wherein, One of the first engaging portion and the second engaging portion has a hook portion that is different from the engaging mechanism using the first gasket. The other of the first engaging portion and the second engaging portion has a hook receiving portion that receives the hook portion.

13. The electronic device as claimed in claim 1, wherein, The first housing and the second housing are assembled together to form a housing unit. Either the first engaging portion or the second engaging portion forms the outer peripheral side surface of the housing unit. The electronic device also includes a peripheral band configured to cover the outer peripheral side.

14. The electronic device of claim 13, wherein, The shell unit is a plate-like structure with a rectangular planar shape. The outer peripheral side has a pair of notches located at diagonal positions to avoid the outer peripheral band.

15. The electronic device as claimed in claim 1, wherein, The first housing and the second housing are assembled together to form a housing unit. The housing unit has an exhaust valve that releases internal pressure to the outside.

16. The electronic device of claim 15, wherein, The exhaust valve has an opening mechanism that allows air to be introduced into the interior of the housing unit through operation from outside the housing unit.

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