Mobile device protection shell and inner frame thereof

Abstract

The invention provides a mobile device protection shell and an inner frame thereof, the mobile device protection shell is suitable for being matched with a mobile device, and the mobile device protection shell comprises the inner frame and an outer frame. The inner frame is provided with a body and at least one supporting part, the supporting part is connected with the outer ring face of the body, and the supporting part is provided with a crumple space. The outer frame and the inner frame are connected in a joint mode, the outer frame is provided with a frame body, and the inner circumferential face of the frame body is opposite to the outer ring face of the body in a spaced mode to form an air chamber. The invention also discloses the inner frame of the mobile device protection shell. According to the protective shell of the mobile device, a cushioning structure can be formed at the position where the protective shell is prone to falling impact so as to provide moderate supporting performance and buffering and energy dissipation effects, impact force can be effectively dispersed and absorbed, and the falling protection effect on the mobile device can be improved.

Description

Technical Field

[0001] This invention relates to a peripheral accessory for a mobile device, and more particularly to a protective case for a mobile device and its inner frame. Background Technology

[0002] With the increasing frequency of mobile device use by modern people, a wide variety of protective cases are available on the market to prevent damage or malfunction caused by accidental drops. These cases are designed for mobile devices such as smartphones, tablets, e-readers, personal digital assistants, smartwatches, and wireless charging cases for earphones. Many of these existing cases have airbags in the corners to absorb the impact of drops. Summary of the Invention

[0003] However, the existing protective covers lack proper support structures at the airbag and are too weak. When subjected to impact, the airbag often deforms excessively, causing the outer wall of the airbag to contact the inner wall. As a result, a large amount of impact force is still transmitted to the mobile device, so the effect of drop protection is not ideal.

[0004] In view of the shortcomings of the existing technology, the applicant felt that it was not perfect, so he devoted his efforts to research and overcome it, and has successfully developed a protective shell for mobile devices. The corners of the shell form a shock-absorbing structure, which can effectively disperse and absorb impact force and improve the protection of mobile devices from drops.

[0005] In addition, the present invention provides an inner frame that can be used in conjunction with the outer frame to form the aforementioned protective shell for the mobile device.

[0006] To achieve the above or other objectives, the present invention provides a protective shell for a mobile device, comprising an inner frame and an outer frame. The inner frame has a body and at least one support portion, the support portion being connected to the outer circumferential surface of the body, and the support portion having a collapsible space. The outer frame is joined to the inner frame by a joining means, the outer frame having a frame body, the inner circumferential surface of the frame body being spaced apart from the outer circumferential surface of the body to form an air chamber.

[0007] The present invention also provides a protective shell for a mobile device, comprising an inner frame and an outer frame. The inner frame has a body and a plurality of support portions, the plurality of support portions being connected to the outer circumferential surface of the body. The outer frame is joined to the inner frame by a joining means, the outer frame having a frame body, the inner circumferential surface of the frame body being spaced apart from the outer circumferential surface of the body to form an air chamber.

[0008] In the aforementioned protective case for mobile devices, the light transmittance of the outer frame can be greater than that of the inner frame.

[0009] In the aforementioned protective case for mobile devices, the light transmittance of the inner frame is approximately 0-40%.

[0010] In the aforementioned protective shell for the mobile device, the inner frame may have multiple protrusions. These multiple protrusions are connected to the outer ring surface of the body and are respectively located on both sides of the body in the lateral direction. The multiple protrusions are engaged with the frame.

[0011] In the aforementioned protective casing for the mobile device, a portion of the air chamber can be filled by the protrusion to form multiple airtight buffer airbags within the air chamber.

[0012] In the aforementioned protective case for the mobile device, the inner frame may have multiple buttons, which are located on at least one side of the body in the lateral direction, and the protrusion of each protrusion from the body is greater than the protrusion of the button from the body.

[0013] In the aforementioned protective case for the mobile device, the support portion, protrusion, and buttons of the inner frame can all be integrally formed and connected to the main body.

[0014] In the aforementioned protective case for the mobile device, none of the multiple buttons are connected to the outer frame, and each button is spaced apart from the inner circumferential surface of the frame without contacting it.

[0015] In the aforementioned protective case for the mobile device, the frame can be relatively thin at the locations of the plurality of buttons.

[0016] In the aforementioned protective casing for the mobile device, the outer peripheral surface of the frame may have multiple rough portions, which are respectively located on the multiple buttons.

[0017] In the aforementioned protective shell for the mobile device, the rough portion protrudes from the outer peripheral surface of the frame by approximately 0.15 mm.

[0018] In the aforementioned protective case for the mobile device, the frame may have at least one recessed area located on the plurality of buttons, and in the recessed area, the front and rear side edges of the frame are relatively thin.

[0019] In the aforementioned protective case for the mobile device, the inner frame may have at least one skirt, which hermetically connects the button to the body.

[0020] In the aforementioned protective casing for mobile devices, the joining method can be welding.

[0021] In the aforementioned protective shell for the mobile device, the frame may have multiple protruding portions, each protruding portion protruding from the inner circumferential surface of the frame, and the free end of each protruding portion forming at least one abutting surface, the abutting surface being able to interfere with and cooperate with the outer ring surface of the body.

[0022] In the aforementioned protective casing for the mobile device, the interference between the contact surface and the outer circumferential surface of the main body is approximately 0.1 to 0.3 mm.

[0023] In the aforementioned protective shell for the mobile device, the free end of the support portion can interfere with the inner circumferential surface of the frame.

[0024] In the aforementioned protective shell for the mobile device, the interference between the free end of the support and the inner circumferential surface of the frame is approximately 0.4–1 mm.

[0025] In the aforementioned protective casing for the mobile device, the free end of the support portion abutting against the inner circumferential surface of the frame is not subject to the aforementioned engagement means.

[0026] In the aforementioned protective shell for the mobile device, the body of the inner frame has an inner annular surface, which encloses and defines a chamber suitable for accommodating the mobile device. The mobile device has two opposite long sides and two opposite short sides, and any two adjacent long sides and short sides extend and intersect at the intersection point. The line passing through the center of mass of the mobile device and any one of the intersection points is the center line. The support portion can be located at a corner of the body, and the middle position of the support portion can be located between the two center lines, and closer to the two sides of the inner frame in the longitudinal direction.

[0027] In the aforementioned protective shell for the mobile device, two cycloids pass through the center of mass and form a 20-degree angle with the center of mass line, and two extension lines are orthogonal to the two cycloids and tangent to the outer peripheral surface of the frame at two tangent points, and both tangent points can be located within the range of the support portion projected onto the outer peripheral surface.

[0028] In the aforementioned protective casing for the mobile device, the two tangent points are respectively projected onto the outer peripheral surface of the free end located on the support portion.

[0029] In the aforementioned protective shell for the mobile device, there may be multiple support portions, which are located at various corners of the main body.

[0030] In the aforementioned protective shell for the mobile device, the support portion may have a long end edge and a short end edge, the support portion being connected to the outer annular surface of the body by the long end edge, and the short end edge being located at the free end of the support portion.

[0031] In the aforementioned protective shell for the mobile device, the long end edge of the support portion has a first span, and the short end edge of the support portion has a second span, with the ratio of the first span to the second span being approximately 3:2.

[0032] In the aforementioned protective casing for the mobile device, the collapse space can be multiple holes provided in the support portion.

[0033] In the aforementioned protective casing for the mobile device, the number of holes can be three, with one hole closer to the free end of the support and the other two holes farther away from the free end of the support.

[0034] In the aforementioned protective casing for the mobile device, each hole has a maximum slot width, and each hole may have a solid material area around it. The edge of the solid material area is spaced from the edge of the hole, and the ratio of the spaced distance to the maximum slot width is approximately 0.62 to 0.93.

[0035] In the aforementioned protective casing for the mobile device, the maximum width of the hole is approximately 1 to 1.5 mm.

[0036] In the aforementioned protective casing for the mobile device, the hole can be an elongated hole with arc-shaped ends.

[0037] In the aforementioned protective casing for the mobile device, the collapse space can be multiple slots provided in the support portion, each slot extending from the free end of the support portion toward the body.

[0038] In the aforementioned protective casing for the mobile device, the radius of curvature at the corner of the frame can be smaller than the radius of curvature at the corner of the main body.

[0039] In the aforementioned protective case for the mobile device, the maximum distance between the corner of the frame and the corner of the main body is approximately 4 mm or more.

[0040] In the aforementioned protective shell for mobile devices, both the inner frame and the outer frame can be made of thermoplastic elastomer (TPE) material.

[0041] In the aforementioned protective casing for the mobile device, the outer frame may have a back plate, and the lower inner surface of the back plate may have a thin area, wherein the thickness of the back plate in the thin area is relatively thin.

[0042] In the aforementioned protective casing for the mobile device, the air chamber may contain multiple cushioning particles or at least one decorative element.

[0043] Furthermore, the inner frame of the mobile device protective shell of the present invention includes a body and at least one support portion. The body has an inner annular surface and an outer annular surface, and the inner annular surface encloses a chamber suitable for accommodating the mobile device. The support portion is connected to the outer annular surface of the body, and the support portion is provided with a collapsible space.

[0044] In the aforementioned inner frame, the inner frame may have multiple protrusions, which are connected to the outer ring surface of the body and are respectively located on both sides of the body in the lateral direction. The multiple protrusions are adapted to engage with the frame of the outer frame.

[0045] In the aforementioned inner frame, a portion of the air chamber may be filled by the protrusion to form multiple airtight buffer airbags within the air chamber.

[0046] The inner frame described above may have multiple buttons, which are located on at least one side of the body in the horizontal direction. The extent to which each protrusion extends beyond the body may be greater than the extent to which the button extends beyond the body.

[0047] In the aforementioned inner frame, the support portion, protrusion, and buttons can all be integrally formed and connected to the main body.

[0048] In the aforementioned inner frame, the inner frame may have at least one skirt, which airtightly connects the button and the body.

[0049] In the aforementioned inner frame, the moving device has two opposite long sides and two opposite short sides. Any two adjacent long sides and short sides extend and intersect at the intersection point. The line passing through the center of mass of the moving device and any one of the intersection points is the center line. The support part can be located at the corner of the body. The middle position of the support part can be located between the two center lines and closer to the two sides of the inner frame in the longitudinal direction.

[0050] In the aforementioned inner frame, there can be multiple supporting parts, each located at a different corner of the main body.

[0051] In the aforementioned inner frame, the support portion may have a long end edge and a short end edge, the support portion being connected to the outer ring surface of the body by the long end edge, and the short end edge being located at the free end of the support portion.

[0052] In the aforementioned inner frame, the long end edge of the support portion has a first span, and the short end edge of the support portion has a second span, with the ratio of the first span to the second span being approximately 3:2.

[0053] In the aforementioned inner frame, the collapse space can be multiple holes provided in the support portion.

[0054] In the aforementioned inner frame, the number of holes can be three, with one hole closer to the free end of the support and the other two holes farther away from the free end of the support.

[0055] In the aforementioned inner frame, each hole has a maximum slot width, and each hole may have a solid material area around it. The edge of the solid material area is spaced from the edge of the hole, and the ratio of the spaced distance to the maximum slot width is approximately 0.62 to 0.93.

[0056] In the aforementioned inner frame, the maximum slot width of the hole is approximately 1 to 1.5 mm.

[0057] In the aforementioned inner frame, the collapse space can be a plurality of grooves provided in the support portion, each groove extending from the free end of the support portion toward the body.

[0058] Accordingly, the mobile device protective shell of the present invention can form a shock-absorbing structure at the point where it is easily subjected to drop impact, so as to provide appropriate support and buffer energy dissipation effect, effectively disperse and absorb impact force, and improve the drop protection effect of the mobile device. Attached Figure Description

[0059] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0060] Figure 1 This is a first embodiment of the protective shell for mobile devices of the present invention and a three-dimensional exploded structural diagram of the mobile device.

[0061] Figure 2 This is a three-dimensional exploded structural diagram of the first embodiment of the protective shell for the mobile device of the present invention.

[0062] Figure 3 It is along Figure 1 Cross-sectional view of line AA in the middle.

[0063] Figure 4 yes Figure 3 Enlarged view of area B in the image.

[0064] Figure 5 yes Figure 4 A magnified view of a portion of the image, with the outer frame omitted.

[0065] Figure 6 It is along Figure 3 Cross-sectional view of the CC line.

[0066] Figure 7 yes Figure 3 Enlarged view of area D in the image.

[0067] Figure 8 This is a three-dimensional structural diagram of the inner frame according to the first embodiment of the present invention, wherein the area depicted in the diagram with fine sand dots is where the inner frame is suitable for joining with the outer frame.

[0068] Figure 9 This is a schematic diagram of the mobile device protective case and the mobile device being dropped from a corner.

[0069] Figure 10 yes Figure 9 A magnified view of a portion of the image.

[0070] Figure 11 This is a second embodiment of the protective shell for mobile devices of the present invention and a three-dimensional exploded structural diagram of the mobile device.

[0071] Figure 12 This is a three-dimensional cross-sectional view of the upper outer frame of the second embodiment of the present invention.

[0072] Figure 13 This is a three-dimensional cross-sectional view of the lower outer frame of the second embodiment of the present invention.

[0073] Figure 14 This is a top view of the second embodiment of the protective shell for the mobile device of the present invention.

[0074] Figure 15 It is along Figure 14 Cross-sectional view of the EE line.

[0075] Figure 16 It is along Figure 14 Cross-sectional view of the FF line.

[0076] Figure 17 This is a partial three-dimensional structural diagram of the third embodiment of the protective shell for mobile devices of the present invention.

[0077] Figure 18 This is a top view of the upper inner frame of the fourth embodiment of the present invention, showing the first type of grooved appearance.

[0078] Figure 19 This is a side view of the upper inner frame of the fourth embodiment of the present invention, showing the second type of grooved pattern.

[0079] Figure 20 This is a three-dimensional exploded structural diagram of the fifth embodiment of the protective shell for mobile devices of the present invention.

[0080] Figure 21 This is a side view of the fifth embodiment of the protective shell for the mobile device of the present invention.

[0081] Figure 22 It is along Figure 21 Cross-sectional view of the GG line.

[0082] Figure 23 This is a three-dimensional cross-sectional view of the protective shell for the lower moving device according to the fifth embodiment of the present invention.

[0083] Figure 24 It is along Figure 22 Cross-sectional view of the HH line.

[0084] Figure 25 yes Figure 22 Enlarged view of region I in the image.

[0085] Figure Labels

[0086] 1 Inner frame

[0087] 11 body

[0088] 111 Inner Circular Surface

[0089] 112 Outer circumference

[0090] 113 Anterior Peripheral

[0091] 114 Rear Ring Perimeter

[0092] 115 Zhou Bi

[0093] 116 Connecting Surface

[0094] 117 Lateral edge

[0095] 12 Support section

[0096] 121 Long end edge

[0097] 122 Short-end edge

[0098] 13 Collapse Space

[0099] 13a Hole

[0100] 13b Groove

[0101] 14 convex part

[0102] 15 buttons

[0103] 16 Inner Panels

[0104] 17. Skirt

[0105] 2. Outer frame

[0106] 21. Frame

[0107] 211 Inner circumferential surface

[0108] 212 Outer Peripheral Surface

[0109] 213 Rear Perimeter

[0110] 214 Convex part

[0111] 2141 Abutment Surface

[0112] 215 Roughness

[0113] 216 Inner Retraction Zone

[0114] 22 Back panel

[0115] 221 Thin Zone

[0116] 3. Buffer airbags

[0117] D Spacing

[0118] D1 First Span

[0119] D2 Second Span

[0120] D3 Third Span

[0121] L0 Ground

[0122] L1 centroid line

[0123] L2 cycloid

[0124] L3 extension line

[0125] M mobile device

[0126] M1 display screen

[0127] M2 Short Side

[0128] M3 Long Side

[0129] P1 Center of mass

[0130] P2 tangent point

[0131] R Material Area

[0132] S1 Container

[0133] S2 air chamber

[0134] T1, T2, T3 thick

[0135] W Maximum slot width Detailed Implementation

[0136] The following description, in conjunction with the accompanying drawings, will further illustrate the protective shell and inner frame of the mobile device according to embodiments of the present invention.

[0137] The foregoing and other technical contents, features and effects of the invention will be clearly presented in the following detailed description of the preferred embodiments with reference to the accompanying drawings.

[0138] It is worth noting that the use of the quantifiers "a" or "an" for components and parts throughout this invention is merely for convenience and to provide the general meaning of the scope of the invention; in this invention, it should be interpreted as including one or at least one, and the concept of a single also includes the case of a plural, unless it clearly means otherwise.

[0139] The terms "combination," "integration," or "assembly" used throughout this invention mainly include those that can be separated without damaging the components after connection, or those that make the components inseparable after connection. These are terms that those skilled in the art can choose based on the material of the components to be connected or the assembly requirements.

[0140] Furthermore, in the following embodiments, the same or similar components will be labeled with the same or similar reference numerals.

[0141] The protective case for mobile devices of the present invention is suitable for being fitted onto mobile device M (marked as...). Figure 1 In addition, the mobile device M may be, for example, but not limited to, a mobile phone, tablet computer, e-book reader, personal digital assistant, smartwatch, or wireless charging case for headphones; although the following embodiments are illustrated using mobile device protective cases for mobile phones as examples, they are not intended to limit the present invention.

[0142] Please refer to Figure 1 and Figure 2 This is a first embodiment of the mobile device protective case of the present invention. The mobile device protective case includes an inner frame 1 and an outer frame 2, and the outer frame 2 covers the inner frame 1.

[0143] In this embodiment, the mobile device M is exemplified by a non-folding, upright mobile phone. The mobile device M typically has a display screen M1, a side edge, and a back side. The display screen M1 is opposite to the back side, and the side edge can connect between the display screen M1 and the back side. When the protective case is assembled onto the mobile device M, the inner frame 1 can at least surround and cover the side edge of the mobile device M. In this invention, the direction orthogonal to the plane of the display screen M1 can be defined as the Z-direction, with the location of the display screen M1 being the forward direction and the location of the back side being the rear direction. The side edge of the mobile device M has two sets of opposite sides, where the relative directions of one set of opposite sides are orthogonal to the relative directions of the other set of opposite sides, and both sets of opposite sides are orthogonal to the Z-direction. In one embodiment of the present invention, one set of opposite sides consists of the two short sides M2 of the side edge, and the direction orthogonal to the two short sides M2 is defined as the Y direction; the other set of opposite sides consists of the two long sides M3 of the side edge, and the direction orthogonal to the two long sides M3 is defined as the X direction. In some embodiments, the side edge of the moving device M does not necessarily have to have long and short sides.

[0144] Please refer to Figures 1 to 3 The inner frame 1 has a body 11 and at least one support portion 12. The body 11 has an inner annular surface 111 and an outer annular surface 112, and the inner annular surface 111 encloses and defines a chamber S1 suitable for accommodating the mobile device M. The support portion 12 is connected to the outer annular surface 112, and the support portion 12 is provided with a collapsible space 13. The outer frame 2 is joined to the inner frame 1 by a joining means. The outer frame 2 has a frame body 21, which has an inner peripheral surface 211 and an outer peripheral surface 212. The inner peripheral surface 211 of the frame body 21 is spaced apart from the outer annular surface 112 of the body 11 to form an air chamber S2.

[0145] In this embodiment, when the mobile device M, which is covered by the protective shell, falls, the impact force generated upon contact with the ground is transmitted inward through the frame 21 of the outer frame 2. If the impact point is close to the support portion 12 of the inner frame 1, most of the impact force will be applied to the support portion 12. During this process, due to the design of the support portion 12, most of the impact force can be smoothly transmitted from the free end of the support portion 12 to the body 11. During the transmission process, the energy is buffered and dissipated by the collapse space 13 on the support portion 12, and the impact force is weakened in the support portion 12. Finally, it is transmitted to both sides to the body 11 and dissipated evenly, which can effectively prevent the impact force from concentrating in one place on the mobile device M and causing damage. On the other hand, most of the remaining impact force that is not transmitted to the support portion 12 can be dissipated by the support and buffering effect provided by the air chamber S2 on the frame 21. Even if the frame 21 is deformed to the point of touching the body 11 of the inner frame 1, the impact force can also be transmitted along the body 11 and dissipated evenly.

[0146] Therefore, the protective shell of the mobile device in this embodiment can form a shock-absorbing structure at the point where it is easily subjected to drop impact by means of the support part 12 provided in the air chamber S2 and the collapse space 13 provided in the support part 12, so as to provide appropriate support and buffer energy dissipation effect, effectively disperse and absorb impact force, and improve the drop protection effect of the mobile device M.

[0147] Please refer to Figure 2 and Figure 3 In one embodiment of the present invention, the number of support portions 12 can be multiple, and they are respectively located at each corner of the body 11. For example, the cross-section of the body 11 in the XY plane of this embodiment can be approximately a hollow rectangle, so the number of support portions 12 can be selected as four, and a support portion 12 is provided at each of the four corners of the body 11. However, the present invention is not limited thereto. For example, in other embodiments, the support portions 12 can be provided only at the two upper corners of the body 11, or only at the two lower corners of the body 11; in other words, the position of the support portions 12 is preferably located at the corners of the body 11, but the number is not limited. The number and position of the support portions 12 can be adjusted according to the overall structural configuration or appearance of the protective shell of the mobile device. Even the support portions 12 can be provided at non-corner parts of the body 11 in the horizontal (X direction) or vertical (Y direction).

[0148] Please refer to Figure 2 and Figure 4In one embodiment of the present invention, the support portion 12 may be narrower at its free end and wider at the connection point with the body 11. For example, the support portion 12 may be trapezoidal with opposing long edge 121 and short edge 122, both of which may be generally arc-shaped. The support portion 12 may be connected to the outer ring surface 112 of the body 11 via the long edge 121, while the short edge 122 is located at the free end of the support portion 12. In embodiments where the support portion 12 is integrally formed with the body 11, the long edge 121 is not a visible edge. Figure 4 The support portion 12 is represented by a two-point chain. The long edge 121 of the support portion 12 has a first span D1 (i.e., the straight-line distance between the two ends of the long edge 121), and the short edge 122 of the support portion 12 has a second span D2 (i.e., the straight-line distance between the two ends of the short edge 122). The ratio of the first span D1 to the second span D2 is approximately 3:2. Thus, during the transmission of impact force from the free end of the support portion 12 to the connection point with the body 11, because the force-bearing area of ​​the free end of the support portion 12 is relatively small, the free end of the support portion 12 can have moderate but not excessive rigidity. Furthermore, when transmitting impact force inward, the effect of dispersing the impact force can be enhanced as the cross-sectional area of ​​the support portion 12 gradually expands.

[0149] Furthermore, in one embodiment of the present invention, the radius of curvature at the corner of the frame 21 can be smaller than the radius of curvature at the corner of the body 11. This increases the distance between the two corners, thereby extending the impact force transmission path within a limited space and further enhancing the impact absorption effect of the protective shell of the mobile device. For example, but not limited to, the maximum distance between the corner of the frame 21 and the corner of the body 11 can reach 4 mm or more.

[0150] In embodiments where the inner frame 1 has multiple support portions 12, the collapse spaces 13 of each of the multiple support portions 12 may have the same or different forms, and the present invention does not impose any limitations. For example, in one embodiment of the present invention, the collapse space 13 may be multiple holes 13a provided in the support portion 12, and preferably through holes. The number of holes 13a provided in each of the multiple support portions 12 may also be the same or different.

[0151] Each hole 13a can substantially penetrate the support portion 12 along the Z direction, and the extending directions of the plurality of holes 13a provided in the same support portion 12 can be parallel or slightly inclined, with the principle that the plurality of holes 13a will not penetrate or connect with each other. On the other hand, the cross-sectional shape of each hole 13a can be, for example, circular, elliptical, or polygonal, and the cross-sectional shape and size of the plurality of holes 13a provided in the same support portion 12 can be the same or different. In one embodiment of the present invention, the number of holes 13a provided in each support portion 12 can be three, and one hole 13a is closer to the free end of the support portion 12 (closer to the short end edge 122), while the other two holes 13a are farther away from the free end of the support portion 12 (closer to the long end edge 121).

[0152] In addition, please refer to Figure 5 In the XY plane, each hole 13a has a maximum slot width W, and each hole 13a is surrounded by a solid material area R. The support portion 12, in principle, does not have holes or cuts in the solid material area R. The edge of the solid material area R (e.g.) Figure 5 The distance D from the two points on the chain line to the edge of the hole 13a is 0.62 to 0.93; for example, the distance D is 1 to 1.5 mm, and the maximum hole width W is 1.6 mm. In this way, the support 12 can have moderate rigidity without excessive collapse space, ensuring that it can elastically recover its original shape after several drops, rather than permanently deforming after one or two drops, thus improving durability.

[0153] Specifically, for example but not limited to, the maximum slot width W of the hole 13a can be approximately 1 to 1.5 mm to balance good formability and drop protection. Furthermore, actual test results show that under the same drop conditions, a circular cross-sectional shape of the hole 13a with a 1 mm hole diameter (i.e., the maximum slot width W) achieves the best drop protection effect.

[0154] Please refer to this again. Figures 1 to 3In one embodiment of the present invention, the inner frame 1 may further have a plurality of protrusions 14, which can be connected to the outer annular surface 112 of the body 11 and are respectively located on both sides of the body 11 in the transverse (X direction). The plurality of protrusions 14 may or may not be engaged with the frame 21. In this way, the plurality of protrusions 14 can enhance the support effect on both sides of the frame 21, making it easier for the air chamber S2 to maintain a predetermined shape and rigidity. In addition, when the mobile device M is dropped laterally, most of the impact force can be buffered and dissipated by the air chamber S2, and the remaining impact force can be transmitted inward to the body 11 through the protrusions 14 located on the side, making the protective shell of the mobile device also very effective in protecting against lateral drops.

[0155] Please also refer to Figure 3 and Figure 6 In one embodiment of the present invention, the shape of each protrusion 14 can generally match the cross-sectional shape of the air chamber S2 at the corresponding position; that is, a portion of the air chamber S2 can be filled by the protrusion 14 to form two separated spaces on both sides of the protrusion 14, and the gas in the two spaces does not easily flow between each other through the protrusion 14. Therefore, as long as there are no holes connecting the chamber S1 or the outside between two adjacent protrusions 14, or between adjacent protrusions 14 and the support 12, a relatively rigid buffer airbag 3 can be formed to improve the energy dissipation effect against impact. In particular, when each protrusion 14 is fixedly connected to the frame 21, the plurality of buffer airbags 3 can form a near-airtight state, which helps to improve the deformation resistance and energy dissipation effect against impact of the plurality of buffer airbags 3. Please refer to the reference. Figure 1 In this embodiment, the multiple airbags 3 are generally formed at the short side M2 ​​of the main body 11 corresponding to the mobile device M, but are not limited thereto.

[0156] Please refer to this again. Figures 1 to 3 In one embodiment of the present invention, the inner frame 1 may have a plurality of buttons 15, which are located on at least one side of the body 11 in the lateral (X direction) direction, respectively corresponding to a plurality of function buttons of the mobile device M, such as power buttons or volume control buttons. The protrusions of each protrusion 14 out of the body 11 are greater than the protrusions of each button 15 out of the body 11, and none of the buttons 15 are engaged with the outer frame 2; that is, each button 15 is spaced apart from and does not contact the inner peripheral surface 211 of the frame 21. Thus, each button 15 is less likely to be accidentally triggered when the frame 21 is deformed by force. In some embodiments, the plurality of buttons 15 may only slightly touch the outer frame 2, or some buttons 15 may touch the outer frame 2 while others do not.

[0157] It is worth mentioning that when the button 15 is located between two adjacent protrusions 14, the body 11 will not form an airtight seal at the button 15 because of the perforation formed therein. That is, the buffer airbag 3 will not form between the two adjacent protrusions 14. Therefore, even if the button 15 needs to be pressed through the frame 21, the button 15 will not be difficult to press and trigger. Furthermore, the multiple support portions 12, multiple protrusions 14, and multiple buttons 15 of the inner frame 1 can all be enclosed within the frame 21. Unlike existing protective cases that expose buttons, the mobile device protective case of this embodiment not only has a unique, integrated, and minimalist aesthetic, but also protects the button 15 from scratches or detachment through the frame 21.

[0158] Please also refer to Figure 2 and Figure 7 In one embodiment of the present invention, the thickness (wall thickness T1 on the XY plane) of the frame 21 at the location of the plurality of buttons 15 can be thinner than other parts. This not only widens the distance between each button 15 and the inner circumferential surface 211 of the frame 21, reducing the probability of accidental triggering of the buttons 15, but also allows the frame 21 to form a softer, more easily pressable and deformable state at the location of the plurality of buttons 15. This allows the user to experience the elastic feel of pressing an air cushion when pressing the buttons 15 through the frame 21, without making it difficult to trigger the buttons 15. Furthermore, the support portion 12, protrusion 14, and buttons 15 of the inner frame 1 can all be integrally formed and connected to the body 11, thereby improving the manufacturing convenience of the inner frame 1.

[0159] Please refer to Figure 1 and Figure 2 In one embodiment of the present invention, the outer frame 2 may be transparent or semi-transparent to allow the color of the inner frame 1 to show through or to make the shape of the inner frame 1 visible from the outside, creating a layered appearance and facilitating the identification of the positions of the plurality of buttons 15. Specifically, the light transmittance of the outer frame 2 may be greater than that of the inner frame 1, and the light transmittance of the inner frame 1 may be approximately 0-40%, allowing the inner frame 1 to show through the outer frame 2 and creating a cushion-like visual effect.

[0160] In addition, please refer to Figures 1 to 3 The joining means used to connect the outer frame 2 to the inner frame 1 may include, for example, but not limited to, gluing, welding or convex-concave fitting, wherein welding with high joint strength is preferred; and different joining means may be included in all joints between the outer frame 2 and the inner frame 1.

[0161] In one embodiment of the present invention, the outer frame 2 may further have a back plate 22, which can be connected to the frame body 21 and shield all or part of the rear end of the frame body 21. That is, the back plate 22 can block the back side of the mobile device M, protecting the back side of the mobile device M from damage. The back plate 22 may have openings to accommodate functional parts of the mobile device M, such as camera holes or fingerprint sensor holes. Furthermore, in one embodiment of the present invention, the back plate 22 can be integrally formed and connected to the rear end of the frame body 21 to improve the structural stability of the frame body 21 and to improve the positioning convenience and accuracy when welding the frame body 21 and the inner frame 1, thus helping to improve the welding quality.

[0162] Please refer to Figure 3 and Figure 8 ,in Figure 8 The area depicted with fine sand dots is where the inner frame 1 is adapted to join the outer frame 2. That is, the front periphery 113 of the body 11 of the inner frame 1 in the Z direction joins with the frame body 21 of the outer frame 2; please refer to the reference section. Figure 6 For example, the rear periphery 213 of the frame 21, facing backwards, abuts against the front periphery 113 of the body 11 in the Z direction. The rear periphery 114 of the body 11 of the inner frame 1 in the Z direction engages with the frame 21 or back plate 22 of the outer frame 2. A plurality of protrusions 14 of the inner frame 1 engage with the inner peripheral surface 211 of the frame 21 of the outer frame 2; in other embodiments, the plurality of protrusions 14 may not engage with the inner peripheral surface 211 of the frame 21.

[0163] Please refer to Figure 1 , Figure 3 and Figure 8The lower end of the body 11 of the inner frame 1 in the Y direction is also engaged with the inner peripheral surface 211 of the frame 21 of the outer frame 2. Since some mobile devices M may have sound holes, charging holes, data transmission holes, or stylus storage holes at their lower ends in the Y direction, in one embodiment of the present invention, the body 11 of the inner frame 1 may have multiple functional holes at its lower end, and the lower end of the body 11 may also form a protruding peripheral wall 115 around the multiple functional holes, so that the peripheral wall 115 engages with the inner peripheral surface 211 of the frame 21. In addition, the functional holes and their peripheral walls 115 may be arranged to correspond to the number and position of sound holes, charging holes, data transmission holes, or stylus storage holes, or adjacent functional holes may share the peripheral wall 115, and some of the peripheral walls 115 may also engage with the inner peripheral surface 211 of the frame 21 on one side in the front or rear direction, so that the peripheral wall 115 and the adjacent protrusion 14 can form an independent buffer airbag 3. More specifically, the peripheral wall 115 may have connecting surfaces 116 formed on its front and rearward (Z-direction) sides, respectively. These connecting surfaces 116 can connect the lower end of the peripheral wall 115 in the Y-direction and the front ring periphery 113 (or the rear ring periphery 114). Please refer to the reference provided. Figure 2 The connecting surface 116 may be arc-shaped to conform to the shape of the inner circumferential surface 211 of the frame 21.

[0164] On the other hand, please refer to Figure 4 The free end of the support portion 12 can interfere with the inner circumferential surface 211 of the frame 21. In one embodiment of the present invention, the interference between the free end of the support portion 12 and the inner circumferential surface 211 of the frame 21 is approximately 0.4 to 1 mm. In this embodiment, the interference is approximately 0.4 to 1 mm, allowing the two to fit tightly together and provide a preload effect. Furthermore, the structures at the joint between the inner frame 1 and the outer frame 2 can be assumed to have a small degree of interference to ensure that after the outer frame 2 fits onto the inner frame 1, the aforementioned jointing means can be effectively applied to the structure.

[0165] It is worth mentioning that, in this embodiment, no joining means are applied to the position where the free end of the support portion 12 abuts against the inner peripheral surface 211 of the frame 21. The purpose is to avoid the protective shell of the mobile device forming excessive rigidity at the position corresponding to the support portion 12. In other embodiments, the interference between the free end of the support portion 12 and the inner peripheral surface 211 of the frame 21 can be adjusted (for example, the interference can be reduced or adjusted to a state without interference), while applying a joining means, so as to avoid excessive rigidity and achieve the purpose of joint strength.

[0166] Please refer to Figure 1 , Figure 3 and Figure 9Taking a mobile device M that matches the protective case of the mobile device shown in this embodiment as an example, the mobile device M has two opposite long sides M3 and two opposite short sides M2. Any two adjacent long sides M3 and short sides M2 can be extended to intersect at the intersection point. One diagonal line passes through one set of two intersection points located diagonally, and another diagonal line passes through another set of two intersection points located diagonally. The intersection of the two diagonal lines is the centroid P1 of the mobile device M. The line passing through the centroid P1 and any of the aforementioned intersection points is referred to as the centroid line L1.

[0167] Please refer to Figure 9 Since the mobile device M typically lands at a corner when dropped, this invention will describe a scenario where one of its centroid lines L1 is perpendicular to the ground L0. In one embodiment of this invention, the support portion 12 is located at a corner of the body 11, and the middle portion (or most of its volume) of the support portion 12 can be located between the two centroid lines L1, and closer to the inner frame 1 on both sides in the longitudinal (Y direction) direction (also known as the top and bottom sides, corresponding to the short side M2 ​​of the mobile device M). Thus, the support portion 12 in this embodiment avoids excessive rigidity due to its large size and achieves better drop protection within a limited volume constraint.

[0168] For more details, please refer to Figure 9 and Figure 10 Two yaw lines L2 pass through the center of mass P1 and form a 20-degree angle with the center of mass line L1, which is orthogonal to the ground L0. That is, the two yaw lines L2 represent the fall paths where the device yaws 20 degrees to the left or right during a fall. Two extension lines L3 are orthogonal to the two yaw lines L2 and are tangent to the outer peripheral surface 212 of the frame 21 at two tangency points P2. Both tangency points P2 are located within the area projected onto the outer peripheral surface 212 by the support portion 12. Preferably, the two tangency points P2 are also projected onto the boundary of the area on the outer peripheral surface 212 by the free end of the support portion 12. Thus, the protective shell of the mobile device ensures that within a fall range where the center of mass L1 yaws 20 degrees to the left or right, the fall point is aligned with the support portion 12, providing optimal fall protection.

[0169] Please refer to Figures 1 to 3 In one embodiment of the present invention, the inner frame 1 and the outer frame 2 are preferably made of the same material so that they can be crushed into small pieces together during recycling without the need for disassembly and separation. This improves recycling efficiency and reduces recycling costs. For example, but not limited to, both the inner frame 1 and the outer frame 2 can be made of thermoplastic elastomer (TPE), particularly recycled TPE obtained from recyclable materials.

[0170] Furthermore, in one embodiment of the present invention, the lower inner surface of the back plate 22 may have a thin area 221, and the thickness of the back plate 22 in the thin area 221 is relatively thin to form an area for placing a hanging piece, so as to avoid the mobile device M and the mobile device protective shell failing to be accurately aligned and joined due to the thickness of the hanging piece, and the hook part of the hanging piece can pass through the frame 21 for matching mobile phone straps or lanyards.

[0171] Furthermore, in one embodiment of the present invention, the air chamber S2 may also contain a plurality of cushioning particles or at least one decorative element. Thus, the protective shell for the mobile device in this embodiment can enhance the cushioning and impact protection effect by utilizing the plurality of cushioning particles, or enhance the diversity of the overall appearance by utilizing the plurality of cushioning particles or the decorative element, providing a customizable design function and increasing consumers' willingness to purchase.

[0172] Please refer to Figure 11 This is a second embodiment of the protective shell for the mobile device of the present invention. This embodiment is largely the same as the first embodiment described above, except that the frame 21 of this embodiment may have a plurality of protruding abutments 214, each protruding abutment 214 protruding from the inner peripheral surface 211 of the frame 21, and is suitable for the outer ring surface 112 of the body 11 to abut against.

[0173] For details, please refer to Figure 11 and 12 In one embodiment of the present invention, on the side of the frame 21 without holes, for example, the side corresponding to the long side M3 of the moving device M, the protruding part 214 may extend in an elongated shape on the inner peripheral surface 211, and the cross-section of the protruding part 214 may be generally C-shaped, so that the free end of the protruding part 214 may form two abutting surfaces 2141 spaced apart in the Z direction.

[0174] Please also refer to Figure 11 and 13 On the side of the frame 21 where the hole is located, for example, on the side corresponding to the short side M2 ​​of the moving device M, the protruding abutment 214 can be in the shape of a short strip, and protruding abutments 214 are formed on both sides of the hole in the Z direction. Furthermore, the free end of each protruding abutment 214 can form an abutment surface 2141, so two abutment surfaces 2141 spaced apart in the Z direction can also be formed.

[0175] Please refer to Figures 14 to 16When the inner frame 1 is assembled into the frame 21 of the outer frame 2, each abutment surface 2141 can abut against or interfere with the outer ring surface 112 of the body 11 to form a stable support for the outer ring surface 112 of the body 11. Thus, when the inner frame 1 and the outer frame 2 are to be welded together, the fixture placed in the chamber S1 can push the inner frame 1 from the inside out, so that the outer ring surface 112 of the body 11 can maintain tight contact with each abutment surface 2141, and... Figure 15 Regarding the portion shown, the abutment surface 2141 can also serve as the bearing surface of the front circumference 113 and the rear circumference 114 of the body 11 in the X direction; Figure 16 In the indicated portion, the abutment surface 2141 can also serve as the bearing surface of the front circumference 113 and the rear circumference 114 of the body 11 in the Y direction. Therefore, each protruding part 214 can firmly stop the body 11, preventing the body 11 from moving excessively outward. This ensures that the body 11 can be maintained in a predetermined position for welding, and that the inner frame 1 and the outer frame 2 can be tightly abutted at the point to be welded, thereby effectively improving the welding quality of the inner frame 1 and the outer frame 2. For example, but not limited to, the interference between the abutment surface 2141 and the outer circumference surface 112 of the body 11 can be approximately 0.1 to 0.3 mm, preferably 0.2 mm.

[0176] It is worth mentioning that, in embodiments where the body 11 has the plurality of protrusions 14, the length of the abutment 214 can extend close to the protrusion 14, and preferably the side edge of the abutment 214 does not contact the protrusion 14, so as not to affect the engagement between the protrusion 14 and the inner peripheral surface 211 of the frame 21. In some embodiments, the side edge of the abutment 214 may also be configured to contact the protrusion 14.

[0177] Please also refer to Figure 15 and Figure 16 In one embodiment of the present invention, the back plate 22 of the outer frame 2 may have a raised portion 222 formed on its inner surface. The raised portion 222 is adjacent to the frame body 21 and is spaced at a predetermined distance from the protruding portion 214, so as to form a groove between the raised portion 222 and the protruding portion 214 to accommodate the rear periphery 114 of the body 11, which helps to improve the stability of the body 11 disposed in the outer frame 2.

[0178] In addition, please refer to Figure 11 In one embodiment of the present invention, the outer peripheral surface 212 of the frame 21 may be provided with a plurality of rough portions 215, which respectively correspond to a plurality of buttons 15 located in the inner frame 1. In this way, the plurality of rough portions 215 can provide a distinctive tactile feel, allowing the user to use touch to find the position corresponding to the button 15 for pressing and triggering.

[0179] For example, but not limited to, the rough portion 215 can be formed by knurling or polishing a portion of the outer peripheral surface 212; or, in one embodiment of the present invention, the rough portion 215 can be a raised texture protruding from the outer peripheral surface 212, the shape of the raised texture can be, for example, a strip, a particle or a specific pattern, and the height of the rough portion 215 protruding from the outer peripheral surface 212 is about 0.15 mm, so as to provide better tactile feel and recognizability.

[0180] Please refer to Figure 17 This is the third embodiment of the protective shell for the mobile device of the present invention. This embodiment is largely the same as the first embodiment described above, with the main difference being that the lower end of the body 11 of the inner frame 1 in this embodiment may have an elongated opening, so that the body 11 does not form a complete ring, but rather a partially open shape at the lower end of the body 11. The body 11 can be positioned opposite the mobile device M (labeled as...) through the elongated opening. Figure 1 The outer frame 2 has at least one of the following openings: a sound hole, a charging hole, a data transmission hole, and a stylus storage hole. The inner circumferential surface 211 of the frame 2 can engage with the side edge 117 of the elongated opening at the lower end of the body 11, thus forming an independent buffer airbag 3 with the adjacent protrusion 14.

[0181] Furthermore, the inner frame 1 in this embodiment may also include an inner plate 16, which is integrally formed and connected to the rear-facing end of the body 11, and together with the body 11 defines the chamber S1, making the chamber S1 open to the front. Thus, even if the body 11 does not form a complete ring, the inner plate 16 can enhance the structural stability of the inner frame 1, thereby improving the bonding quality between the inner frame 1 and the outer frame 2.

[0182] Please refer to Figure 18 and Figure 19 This is the fourth embodiment of the protective shell for the mobile device of the present invention. This embodiment is largely the same as the first embodiment described above, with the main difference being the shape of the collapsible space 13 in the inner frame 1.

[0183] In detail, the support portion 12 of this embodiment may have a plurality of slots 13b to form a collapsible space 13 in the support portion 12. Each slot 13b extends from the free end of the support portion 12 toward the body 11. Figure 18 In the illustrated embodiment, the groove 13b may be selected to penetrate the surface of the support portion 12 in the Z direction; or in Figure 19 In the embodiment shown, the groove 13b may be selected to penetrate the surface of the support portion 12 in the XY plane.

[0184] Please refer to Figure 20This is the fifth embodiment of the protective case for the mobile device of the present invention. This embodiment is largely the same as the second embodiment described above, except that the outer frame 21 is provided with a structure that is easier to press and deform to trigger the button 15 of the inner frame 1.

[0185] For details, please refer to Figures 20 to 24 In this embodiment, the frame 21 may have at least one recessed area 216 for the plurality of buttons 15; in the recessed area 216, the front and rear side edges of the frame 21 have a relatively thin wall thickness T2. In other words, as Figure 21 and Figure 24 As shown, on the XZ plane, the thickness T2 of the frame 21 in the recessed area 216 (especially the two opposite parts adjacent to the Z direction, i.e., the front and rear edges of the frame 21) can be thinner than the thickness of other parts of the frame 21 in the Y direction. Thus, the flexibility of the frame 21 in the recessed area 216 is improved, resulting in a softer, more easily deformable section, allowing the user to accurately trigger the button 15 located within the recessed area 216 with only moderate force. Furthermore, the difference in edge height between the recessed area 216 and other parts also creates a distinctive tactile feel, allowing the user to quickly locate the recessed area 216 by touch alone, and accurately find the corresponding position of the button 15 by combining the multiple rough parts 215 for pressing and triggering. Therefore, the frame 21 of this embodiment provides better operability and convenience.

[0186] Please refer to Figure 20 , Figure 22 and Figure 23 As mentioned above, the frame 21 in this embodiment can improve the local flexibility of the frame 21 by providing the inward recessed area 216. Therefore, this embodiment can also optionally have the inner frame 1 have at least one skirt 17, which airtightly connects the button 15 and the body 11. In this way, even if there is water vapor in the chamber S1 of the inner frame 1, the water vapor will not seep into the air chamber S2 between the inner frame 1 and the outer frame 2, causing condensation between the inner frame 1 and the outer frame 2 and affecting the aesthetics.

[0187] Please refer to the following: Figure 20 and Figure 24 In this embodiment, the skirt 17 can be formed into a convex arc shape, and the button 15 is connected to the outermost convex part of the skirt 17. The skirt 17 is preferably made thinner, especially at the point where it adjoins the button 15, to have higher flexibility. This allows the skirt 17 to elastically deform when the button 15 is pressed, enabling the button 15 to smoothly displace into the chamber S1 of the inner frame 1 to trigger the moving device M (marked as...). Figure 1The thickness T3 of the skirt 17 can be the thinnest achievable in the injection molding process (currently about 0.6 mm, but not limited to this). Furthermore, the thickness T3 of the skirt 17 can increase from the point of connection to the button 15 towards the point of connection to the body 11, for example, making the thickness T3 of the skirt 17 about 0.7 mm at the point of connection to the body 11, thereby avoiding the shrinkage deformation problem common in the injection molding process at the point of connection to the body 11. Besides thinning the thickness T3 of the skirt 17 as described above, in other embodiments, a cut can be provided at the point of connection between the skirt 17 and the button 15 (whether the cut is formed from the inside or outside of the skirt 17) so that the button 15 can smoothly trigger the button of the mobile device M.

[0188] Furthermore, the third span D3 of the skirt 17 in the Z direction is preferably wider, which helps to improve the flexibility of the skirt 17; however, care should be taken to ensure that the inner side of the body 11 still has sufficient thickness to stably support the motion device M.

[0189] It is worth mentioning that, please refer to Figure 20 and Figure 22 In this embodiment, the multiple protrusions 14 of the inner frame 1 can each have a wider bottom (at the outer ring surface 112 connecting the body 11) to provide good lateral drop protection. Each protrusion 14 can be engaged with the frame 21 or not, and the present invention does not limit this.

[0190] Please refer to Figure 20 and Figure 25 This embodiment also provides a different type of collapse space 13 for the inner frame 1. In this embodiment, the collapse space 13 is a plurality of holes 13a provided in the support portion 12, and each hole 13a can be formed into an elongated hole with arc-shaped ends. In this way, after the protective shell of the mobile device is dropped several times, each hole 13a is not prone to permanent collapse and deformation, thus improving durability.

[0191] For example, but not limited to, in one embodiment of the present invention, the number of holes 13a can be three. The middle hole 13a is approximately located at the center of the support portion 12, and its major axis is generally parallel to the direction extending from the free end of the support portion 12 towards the chamber S1. The major axes of the two side holes 13a are generally parallel to the two inclined side edges of the support portion 12, thus combining durability and aesthetics. In other embodiments, the major axes of the two side holes 13a can each be parallel to the major axis of the middle hole 13a, or form an angle of less than 60 degrees with the major axis of the middle hole 13a.

[0192] The above description is merely an embodiment of the present invention and is not intended to limit the patent scope of the present invention.

Claims

1. A protective case for a mobile device, characterized in that, include: The inner frame has a body and at least one support portion, the support portion being connected to the outer circumferential surface of the body, and the support portion having a collapsible space; and An outer frame is joined to the inner frame by a joining means. The outer frame has a frame body, and the inner peripheral surface of the frame body is spaced apart from the outer ring surface of the body to form an air chamber.

2. The protective case for mobile devices according to claim 1, characterized in that, The light transmittance of the outer frame is greater than that of the inner frame.

3. The protective case for mobile devices according to claim 2, characterized in that, The light transmittance of the inner frame is 0-40%.

4. The protective case for a mobile device according to claim 1, characterized in that, The inner frame has multiple protrusions that connect to the outer ring surface of the body and are located on both sides of the body in the lateral direction. The multiple protrusions are engaged with the frame.

5. The protective case for a mobile device according to claim 4, characterized in that, The air chamber is partially filled with the protrusion to form multiple airtight buffer airbags in the air chamber.

6. The protective case for a mobile device according to claim 4, characterized in that, The inner frame has multiple buttons located on at least one side of the body in the horizontal direction, and each protrusion protrudes from the body by a greater extent than the button protrudes from the body.

7. The protective case for a mobile device according to claim 6, characterized in that, The inner frame's support portion, protrusions, and buttons are all integrally formed and connected to the main body.

8. The protective case for a mobile device according to claim 6, characterized in that, None of the buttons are attached to the outer frame, and each button is spaced apart from the inner circumferential surface of the frame without contacting it.

9. The protective case for a mobile device according to claim 8, characterized in that, The frame is thinner at the locations of the plurality of buttons.

10. The protective case for a mobile device according to claim 6, characterized in that, The outer peripheral surface of the frame has multiple rough portions, which are respectively located on the multiple buttons.

11. The protective case for a mobile device according to claim 10, characterized in that, The rough portion protrudes 0.15 mm above the outer periphery of the frame.

12. The protective case for a mobile device according to claim 6, characterized in that, The frame has at least one recessed area at the location of the plurality of buttons, and in the recessed area, the front and rear side edges of the frame are relatively thin.

13. The protective case for a mobile device according to claim 12, characterized in that, The inner frame has at least one skirt that airtightly connects the button to the body.

14. The protective case for a mobile device according to claim 1, characterized in that, The joining method is welding.

15. The protective case for a mobile device according to claim 14, characterized in that, The frame has multiple protruding abutments, each protruding abutment protruding from the inner circumferential surface of the frame. The free end of each protruding abutment forms at least one abutting surface, which interferes with the outer circumferential surface of the body.

16. The protective case for a mobile device according to claim 15, characterized in that, The interference between the contact surface and the outer ring surface of the body is 0.1 to 0.3 mm.

17. The protective case for a mobile device according to claim 1, characterized in that, The free end of the support part interferes with the inner circumferential surface of the frame.

18. The protective case for a mobile device according to claim 17, characterized in that, The interference between the free end of the support and the inner circumferential surface of the frame is 0.4 to 1 mm.

19. The protective case for a mobile device according to claim 17, characterized in that, The free end of the support abuts against the inner circumferential surface of the frame without being engaged by the aforementioned means.

20. The protective case for a mobile device according to claim 1, characterized in that, The inner frame has an inner ring surface that encloses a chamber suitable for accommodating a mobile device. The mobile device has two opposite long sides and two opposite short sides. Any two adjacent long sides and short sides extend and intersect at the intersection point. The line passing through the center of mass of the mobile device and any one of the intersection points is the center line. The support is located at a corner of the body. The middle position of the support is located between the two center lines and is relatively close to the two sides of the inner frame in the longitudinal direction.

21. The protective case for a mobile device according to claim 20, characterized in that, Two cycloids pass through the centroid and form a 20-degree angle with the centroid line. Two extension lines are orthogonal to the two cycloids and are tangent to the outer peripheral surface of the frame at two points of tangency. Both points of tangency are located within the range of the support portion projected onto the outer peripheral surface.

22. The protective case for a mobile device according to claim 21, characterized in that, The two tangent points are respectively projected onto the outer peripheral surface of the free end located on the support.

23. The protective case for a mobile device according to claim 1, characterized in that, There are multiple support parts, which are located at various corners of the main body.

24. The protective case for a mobile device according to claim 1, characterized in that, The support portion has a long end edge and a short end edge, the long end edge of which is connected to the outer ring surface of the body, and the short end edge is located at the free end of the support portion.

25. The protective casing for a mobile device according to claim 24, characterized in that, The long end edge of the support has a first span, and the short end edge of the support has a second span, with the ratio of the first span to the second span being 3:

2.

26. The protective case for a mobile device according to claim 1, characterized in that, The collapse space is a plurality of holes provided in the support portion.

27. The protective case for a mobile device according to claim 26, characterized in that, The number of holes is three, with one hole closer to the free end of the support and the other two holes farther away from the free end of the support.

28. The protective case for a mobile device according to claim 26, characterized in that, Each hole has a maximum slot width, and each hole has a solid material area around it. The edge of the solid material area is spaced from the edge of the hole to the hole edge. The ratio of the spaced distance to the maximum slot width is 0.62 to 0.

93.

29. The protective case for a mobile device according to claim 28, characterized in that, The maximum slot width of the hole is 1 to 1.5 mm.

30. The protective case for a mobile device according to claim 26, characterized in that, The hole is an elongated hole with arc-shaped ends.

31. The protective case for a mobile device according to claim 1, characterized in that, The collapse space is a plurality of grooves provided in the support portion, each groove extending from the free end of the support portion toward the body.

32. The protective case for a mobile device according to claim 1, characterized in that, The radius of curvature at the corner of the frame is smaller than the radius of curvature at the corner of the body.

33. The protective case for a mobile device according to claim 32, characterized in that, The maximum distance between the corner of the frame and the corner of the body is 4mm or more.

34. The protective case for a mobile device according to claim 1, characterized in that, Both the inner frame and the outer frame are made of thermoplastic elastomer material.

35. The protective case for a mobile device according to claim 1, characterized in that, The outer frame has a back panel, and the lower inner surface of the back panel has a thin area, the thickness of which is relatively thin.

36. The protective case for a mobile device according to claim 1, characterized in that, The air chamber contains multiple cushioning particles or at least one decorative element.

37. A protective case for a mobile device, characterized in that, include: The inner frame has a body and multiple supporting parts, the multiple supporting parts being connected to the outer ring surface of the body; and An outer frame is joined to the inner frame by a joining means. The outer frame has a frame body, and the inner peripheral surface of the frame body is spaced apart from the outer ring surface of the body to form an air chamber.

38. An inner frame of a protective shell for a mobile device, characterized in that, include: The body has an inner ring surface and an outer ring surface, and the inner ring surface encloses a chamber suitable for accommodating a mobile device. and At least one support portion is provided, the support portion being connected to the outer annular surface of the body, and the support portion having a collapsible space.

39. The inner frame of the protective shell for the mobile device according to claim 38, characterized in that, The inner frame has multiple protrusions that connect to the outer ring surface of the body and are located on both sides of the body in the lateral direction. The multiple protrusions are adapted to engage with the frame of the outer frame.

40. The inner frame of the protective shell for the mobile device according to claim 39, characterized in that, The inner frame has multiple buttons located on at least one side of the body in the horizontal direction, and each protrusion protrudes from the body by a greater extent than the button protrudes from the body.

41. The inner frame of the protective shell for the mobile device according to claim 40, characterized in that, The inner frame's support portion, protrusions, and buttons are all integrally formed and connected to the main body.

42. The inner frame of the protective shell for the mobile device according to claim 40, characterized in that, The inner frame has at least one skirt that airtightly connects the button to the body.

43. The inner frame of the protective shell for the mobile device according to claim 38, characterized in that, The moving device has two opposite long sides and two opposite short sides. Any two adjacent long sides and short sides extend and intersect at the intersection point. The line passing through the center of mass of the moving device and any one of the intersection points is the center line. The support part is located at the corner of the body. The middle position of the support part is located between the two center lines and is relatively close to the two sides of the inner frame in the longitudinal direction.

44. The inner frame of the protective shell for the mobile device according to claim 38, characterized in that, There are multiple support parts, which are located at various corners of the main body.

45. The inner frame of the protective shell for the mobile device according to claim 38, characterized in that, The support portion has a long end edge and a short end edge, the long end edge of which is connected to the outer ring surface of the body, and the short end edge is located at the free end of the support portion.

46. ​​The inner frame of the protective shell for the mobile device according to claim 45, characterized in that, The long end edge of the support has a first span, and the short end edge of the support has a second span, with the ratio of the first span to the second span being 3:

2.

47. The inner frame of the protective shell for the mobile device according to claim 38, characterized in that, The collapse space is a plurality of holes provided in the support portion.

48. The inner frame of the protective shell for the mobile device according to claim 47, characterized in that, The number of holes is three, with one hole closer to the free end of the support and the other two holes farther away from the free end of the support.

49. The inner frame of the protective shell for the mobile device according to claim 47, characterized in that, Each hole has a maximum slot width, and each hole has a solid material area around it. The edge of the solid material area is spaced from the edge of the hole to the hole edge. The ratio of the spaced distance to the maximum slot width is 0.62 to 0.

93.

50. The inner frame of the protective shell for the mobile device according to claim 49, characterized in that, The maximum slot width of the hole is 1 to 1.5 mm.

51. The inner frame of the protective shell for the mobile device according to claim 38, characterized in that, The collapse space is a plurality of grooves provided in the support portion, each groove extending from the free end of the support portion toward the body.

Images