Protective shell of folding electronic equipment

Abstract

The utility model provides a protective shell of folding electronic equipment, and relates to the technical field of electronic products. The protective shell comprises a bottom shell, a shaft cover and a flexible layer. The bottom shell is arranged outside a first shell body or a second shell body of the folding type electronic equipment in a sleeving mode so as to protect the first shell body or the second shell body. The shaft cover is arranged outside a rotating shaft of the folding type electronic equipment in a blocking mode so as to protect the rotating shaft. The flexible layer covers at least part of the surface of the shaft cover, and the bottom shell and the shaft cover are connected through the flexible layer. Wherein the side, away from the bottom shell, of the shaft cover and the surface of the side, facing the folding type electronic equipment, of the shaft cover are provided with a risk area, the flexible layer covers the risk area of the shaft cover, and in the process that the folding type electronic equipment is switched between the folding state and the unfolding state, the flexible layer makes contact friction with the surface of the folding type electronic equipment. Therefore, the phenomenon that the folding electronic equipment is scratched by the protective shell can be improved, the appearance of the folding electronic equipment is prevented from being damaged, and the integrity and the service life of the folding electronic equipment are guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and particularly relates to a protective case for a foldable electronic device. Background Art

[0002] The foldable screen has the characteristic of being bendable, enabling the electronic device equipped with the foldable screen, that is, the foldable electronic device, to switch between the unfolded state and the folded state. The foldable electronic device has a large display area and is convenient to carry, and is increasingly favored by consumers.

[0003] With the application of foldable electronic devices, protective cases for foldable electronic devices have emerged accordingly to protect the foldable electronic devices from scratches, collisions, falls and other damages. In the related art, the protective case of the foldable electronic device may include a bottom case and a shaft cover. The bottom case covers the battery cover of the foldable electronic device, and the shaft cover covers the rotating shaft of the foldable electronic device. The shaft cover and the bottom case are connected through an inner PU layer and an outer PU layer. The inner PU layer is arranged on the inner surfaces of the shaft cover and the bottom case, and the outer PU layer is arranged on the outer surfaces of the shaft cover and the bottom case.

[0004] However, when the foldable electronic device is in the unfolded state, the shaft cover will inevitably rub against the screen, the rotating shaft and the middle frame of the electronic device. During the long-term use of the foldable electronic device, it will cause damage to the appearance of the electronic device. Summary of the Utility Model

[0005] The present application provides a protective case for a foldable electronic device, which can improve the rubbing phenomenon against the foldable electronic device, prevent damage to the appearance of the foldable electronic device, and ensure the integrity and service life of the foldable electronic device.

[0006] The present application provides a protective case for a foldable electronic device, including: a bottom case sleeved outside the housing of the foldable electronic device; a shaft cover blocking outside the rotating shaft of the foldable electronic device, and a risk area is provided on the surface of the shaft cover away from the bottom case and facing the foldable electronic device; a flexible layer covering at least part of the surface of the shaft cover and connected to the bottom case; wherein, the flexible layer covers the risk area, and the shaft cover contacts the foldable electronic device through the flexible layer.

[0007] The protective case of the foldable electronic device provided by the present application includes a bottom case, a shaft cover, and a flexible layer. The bottom case is sleeved outside the first housing or the second housing of the foldable electronic device to protect the first housing or the second housing. The shaft cover is blocked outside the rotating shaft of the foldable electronic device to protect the rotating shaft. The flexible layer covers at least a part of the surface of the shaft cover, and the bottom case and the shaft cover are connected through the flexible layer. Wherein, on the side of the shaft cover away from the bottom case and on the surface of the shaft cover facing the foldable electronic device, there is a risk area. By making the flexible layer cover the risk area of the shaft cover, during the process of the foldable electronic device switching between the folded state and the unfolded state, the flexible layer contacts and rubs against the surface of the foldable electronic device. In this way, the scratching phenomenon of the protective case on the foldable electronic device can be improved, damage to the appearance of the foldable electronic device can be prevented, and the integrity and service life of the foldable electronic device can be ensured.

[0008] In a possible implementation manner, the flexible layer includes a first flexible layer and a second flexible layer. The first flexible layer covers the outer wall surface of the shaft cover, and the second flexible layer covers the inner wall surface of the shaft cover. At least one of the first flexible layer and the second flexible layer is connected to the bottom case; wherein, the second flexible layer covers the risk area, and the shaft cover contacts the foldable electronic device through the second flexible layer.

[0009] By covering the outer wall surface of the shaft cover with the first flexible layer and covering the inner wall surface of the shaft cover with the second flexible layer, and connecting at least one of the first flexible layer and the second flexible layer to the bottom case, the connection between the shaft cover and the bottom case is realized. Both side wall surfaces of the shaft cover are covered with the flexible layer, which can improve the appearance effect of the protective case and make the protection of the flexible layer on the shaft cover more comprehensive. Among them, by making the second flexible layer cover the risk area on the inner wall surface of the shaft cover, the second flexible layer contacts the foldable electronic device, which can improve the scratching phenomenon of the shaft cover on the foldable electronic device and prevent the protective case from damaging the appearance of the foldable electronic device.

[0010] In a possible implementation manner, the side edge of the shaft cover away from the bottom case has an outer rounded corner portion, the edge of the risk area is connected to the outer rounded corner portion, and the second flexible layer is connected to the outer rounded corner portion.

[0011] By forming an outer rounded corner portion on the side edge of the shaft cover away from the bottom case, the outer rounded corner portion makes the side edge of the shaft cover have a smooth transition. In this way, the size of the side edge of the shaft cover shrinks inward and will not interfere with the foldable electronic device. Moreover, the stress concentration phenomenon on the side edge of the shaft cover can be weakened, the risk of damage to the side edge of the shaft cover can be reduced, and the reliability and service life of the shaft cover can be improved. Among them, the risk area on the inner wall surface of the shaft cover is connected to the outer rounded corner portion of the shaft cover, and the second flexible layer covering the risk area of the shaft cover can also be connected to the outer rounded corner portion of the shaft cover.

[0012] In a possible implementation, an outer mounting groove is provided on the outer wall surface of the shaft cover, and the first flexible layer is mounted in the outer mounting groove; an inner mounting groove is provided on the inner wall surface of the shaft cover, the inner mounting groove covers the risk area, and the second flexible layer is mounted in the inner mounting groove; wherein, on the side of the shaft cover away from the bottom case, the outer mounting groove and the inner mounting groove are spaced apart.

[0013] By providing an outer mounting groove on the outer wall surface of the shaft cover and arranging the first flexible layer in the outer mounting groove, the outer mounting groove positions the first flexible layer. An inner mounting groove is provided on the inner wall surface of the shaft cover, and the second flexible layer is arranged in the inner mounting groove, and the inner mounting groove positions the second flexible layer. By making the outer mounting groove and the inner mounting groove have a gap on the side of the shaft cover away from the bottom case, there is also a gap between the first flexible layer and the second flexible layer, which can avoid interference between the two. Moreover, the second flexible layer can be completely located on the inner wall surface of the shaft cover, ensuring the appearance effect of the protective case.

[0014] In a possible implementation, the first flexible layer covers the outer surface of the bottom case, and the second flexible layer covers at least part of the inner surface of the bottom case.

[0015] By making the first flexible layer cover the outer surface of the bottom case and the second flexible layer cover at least part of the inner surface of the bottom case, the first flexible layer and the second flexible layer connect the two side wall surfaces of the shaft cover to the two side surfaces of the bottom case respectively. Under the combined action of the first flexible layer and the second flexible layer, the shaft cover and the bottom case are stably and reliably connected, and the first flexible layer and the second flexible layer generate a force that makes the two tend to converge, so that the first flexible layer and the second flexible layer can be kept in close contact with the shaft cover and the bottom case.

[0016] In a possible implementation, a mounting groove is provided on the inner surface of the bottom case near the shaft cover, the mounting groove communicates with the side wall of the bottom case, and the second flexible layer is mounted in the mounting groove.

[0017] In a possible implementation, the flexible layer includes a first flexible layer, the first flexible layer covers the outer wall surface of the shaft cover, and the first flexible layer bypasses the side of the shaft cover away from the bottom case and extends to the inner wall surface of the shaft cover so that the first flexible layer covers at least the risk area.

[0018] By making the first flexible layer covering the outer wall surface of the shaft cover bypass the edge of the shaft cover away from the bottom case and extend to the inner wall surface of the shaft cover, so that the first flexible layer covers the risk area on the inner wall surface of the shaft cover. In this way, the shaft cover contacts the surface of the foldable electronic device through the first flexible layer, and the force between the first flexible layer and the surface of the foldable electronic device is small, and the friction between the two is small. Thus, the rubbing phenomenon of the shaft cover against the foldable electronic device can be improved, and the appearance of the foldable electronic device can be prevented from being damaged by the protective case.

[0019] In a possible implementation, an outer mounting groove is provided on the outer wall surface of the shaft cover, and an inner mounting groove is provided on the inner wall surface of the shaft cover. The inner mounting groove covers the risk area. Wherein, on the side of the shaft cover away from the bottom shell, the outer mounting groove and the inner mounting groove are communicated, and the first flexible layer is mounted in the outer mounting groove and the inner mounting groove.

[0020] By making the outer mounting groove on the outer wall surface of the shaft cover and the inner mounting groove on the inner wall surface of the shaft cover communicate with each other on the side of the shaft cover away from the bottom shell, the part of the first flexible layer covering the outer wall surface of the shaft cover can be mounted in the outer mounting groove, and the part of the first flexible layer covering the inner wall surface of the shaft cover can pass through the outer mounting groove and be mounted in the inner mounting groove, so that the first flexible layer covers the risk area on the inner wall surface of the shaft cover.

[0021] In a possible implementation, the first flexible layer covers the outer surface of the bottom shell, and / or the first flexible layer covers at least part of the inner surface of the bottom shell.

[0022] When the first flexible layer covers the outer surface of the bottom shell and the first flexible layer covers at least part of the inner surface of the bottom shell, the first flexible layer connects the two side wall surfaces of the shaft cover with the two side surfaces of the bottom shell respectively, which can ensure the stable and reliable connection between the shaft cover and the bottom shell. Moreover, the first flexible layers on both sides at the connection between the shaft cover and the bottom shell generate a converging force, which can make the first flexible layer keep in close contact with the shaft cover and the bottom shell, improving the integrity and reliability of the protective shell.

[0023] In a possible implementation, the flexible layer further includes a second flexible layer, and the second flexible layer covers at least part of the inner surface of the bottom shell at least.

[0024] In a possible implementation, the second flexible layer extends to cover part of the inner wall surface of the shaft cover.

[0025] The outer wall surface of the shaft cover and the outer surface of the bottom shell can be connected through the first flexible layer. By making the second flexible layer extend to cover part of the inner wall surface of the shaft cover, the first flexible layer and the second flexible layer connect the two side wall surfaces of the shaft cover with the two side surfaces of the bottom shell respectively. The connection between the shaft cover and the bottom shell is stable and reliable. Moreover, the first flexible layer and the second flexible layer generate a converging force that makes the two tend to gather, which can make the first flexible layer and the second flexible layer keep in close contact with the shaft cover and the bottom shell.

[0026] In a possible implementation, a mounting groove is provided on the inner surface of the bottom shell near the shaft cover, and the mounting groove communicates with the side wall of the bottom shell. The first flexible layer or the second flexible layer is mounted in the mounting groove.

[0027] In a possible implementation, the flexible layer is a PU skin layer.

[0028] The PU cortex is used as the flexible layer. The PU cortex has a genuine leather texture, high strength, good abrasion resistance, and excellent tear resistance. While playing the role of firmly connecting the shaft cover and the bottom shell, it can also enhance the appearance effect of the protective case. Moreover, the PU cortex has a certain tension, which can enhance the supportability of the shaft cover. The shaft cover can be supported on the surface of the foldable electronic device and slide along the surface of the foldable electronic device. It can achieve automatic adsorption of the shaft cover on the rotating shaft of the foldable electronic device without the user manually adjusting the position of the shaft cover, making the use of the protective case simpler and more convenient.

[0029] In a possible implementation manner, at least one of the first flexible layer and the second flexible layer is a double-sided elastic PU cortex.

[0030] By setting at least one of the first flexible layer and the second flexible layer as a double-sided elastic PU cortex, the overall tension of the first flexible layer and the second flexible layer can be avoided from being too large, and the tension of the flexible layer at the connection between the shaft cover and the bottom shell can be within a suitable range. In this way, the magnetic attraction force between the shaft cover and the rotating shaft can overcome the tension of the protective case, and the shaft cover can be automatically adsorbed on the rotating shaft.

[0031] In a possible implementation manner, both the first flexible layer and the second flexible layer are double-sided elastic PU cortices, and the elastic force direction of one of the first flexible layer and the second flexible layer is the width direction of itself, and the elastic force direction of the other is the length direction of itself.

[0032] When both the first flexible layer and the second flexible layer are double-sided elastic PU cortices, by making the elastic force direction of one of the first flexible layer and the second flexible layer be horizontal and the elastic force direction of the other be vertical, the overall tension of the two can be weakened. Keep the tension of the flexible layer at the connection between the shaft cover and the bottom shell moderate, and achieve automatic adsorption of the shaft cover on the rotating shaft.

[0033] In a possible implementation manner, one of the first flexible layer and the second flexible layer is a double-sided elastic PU cortex, and the other is a four-sided elastic PU cortex.

[0034] In a possible implementation manner, the flexible layer is an injection molding layer integrally formed on the surface of the shaft cover.

[0035] By injecting an injection molding layer on the surface of the shaft cover as the flexible layer, the flexible layer and the shaft cover, and the flexible layer and the bottom shell are all integral structures. The connection strength between the flexible layer and the shaft cover, and the flexible layer and the bottom shell is high, and the integrity and reliability of the protective case are good. The injection molding layer has good flexibility and low strength. When the foldable electronic device is in the unfolded state, the shaft cover may be separated from the surface of the foldable electronic device and suspended. The user can manually adjust the position of the shaft cover to make the shaft cover adsorbed on the rotating shaft.

[0036] In a possible implementation manner, at least one magnetic part is arranged in the shaft cover.

[0037] By providing at least one magnetic member inside the shaft cover and relying on the magnetic attraction force generated between the magnetic member and the rotating shaft of the foldable electronic device, when the foldable electronic device is in the folded state, the shaft cover can be stably and reliably adsorbed on the rotating shaft. Description of the Drawings

[0038] Figure 1 It is a schematic structural diagram of the foldable electronic device when it is in the unfolded state;

[0039] Figure 2 is Figure 1 a schematic structural diagram of the foldable electronic device in the folded state in

[0040] Figure 3 is Figure 1 a schematic structural diagram of the foldable electronic device in the semi-unfolded state in

[0041] Figure 4 is Figure 1 a schematic exploded view of the foldable electronic device in

[0042] Figure 5 is a schematic structural diagram of the protective case in the related art;

[0043] Figure 6 is Figure 5 a cross-sectional view of the protective case along the A-A line in

[0044] Figure 7 is a schematic structural diagram of a protective case provided by an embodiment of the present application;

[0045] Figure 8 is Figure 7 an exploded view of the protective case in

[0046] Figure 9 is Figure 7 a cross-sectional view of the protective case along the B-B line in

[0047] Figure 10 is Figure 7 a structural diagram of a perspective of the shaft cover of the protective case in

[0048] Figure 11 is Figure 10 a structural diagram of another perspective of the shaft cover in

[0049] Figure 12 is Figure 11 a cross-sectional view of the shaft cover along the C-C line in

[0050] Figure 13 is a cross-sectional structural diagram of another protective case provided by an embodiment of the present application;

[0051] Figure 14 is Figure 13 a structural diagram of a perspective view of the shaft cover of the protective case in

[0052] Figure 15 is Figure 14 a structural diagram of another perspective view of the shaft cover in

[0053] Figure 16 is Figure 15 a cross-sectional view of the shaft cover along line D-D in

[0054] Description of reference numerals:

[0055] 10 - Foldable electronic device;

[0056] 100 - Display screen; 200 - Housing assembly;

[0057] 100a - Foldable screen; 100b - Straight screen;

[0058] 110 - First non - bendable part; 120 - Bendable part; 130 - Second non - bendable part; 210 - First housing; 220 - Second housing; 230 - Rotating shaft;

[0059] 201 - Middle frame; 202 - Rear cover;

[0060] 20 - Protective case;

[0061] 300 - Bottom case; 400 - Shaft cover; 500 - Flexible layer;

[0062] 310 - Mounting groove; 410 - Magnetic part; 420 - Accommodating groove; 430 - Adhesive layer; 440 - Outer rounded corner part; 450 - Mounting groove; 510 - First flexible layer; 520 - Second flexible layer;

[0063] 451 - Outer mounting groove; 452 - Inner mounting groove. Detailed implementation manners

[0064] The terms used in the implementation manners part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application.

[0065] Figure 1 is a schematic structural diagram of the foldable electronic device in the unfolded state. Figure 2 is Figure 1 a schematic structural diagram of the foldable electronic device in the folded state in Figure 3 is Figure 1 a schematic structural diagram of the foldable electronic device in the semi - unfolded state in

[0066] Refer to Figures 1 - 3As shown in any of the figures, taking a folding mobile phone as an example, the structure of the foldable electronic device 10 is illustrated. Of course, the foldable electronic device 10 can also be a foldable electronic product such as a laptop computer, a notebook computer, a netbook, a personal digital assistant (PDA), a personal computer, a multimedia player, an e-book reader, a vehicle-mounted device, a virtual reality (VR) device, an augmented reality (AR) device, or a wearable device. Among them, wearable devices include but are not limited to smart bracelets, smart watches, smart head-mounted displays, smart glasses, etc.

[0067] For the foldable electronic device 10, in different usage scenarios, the foldable electronic device 10 can have different usage states. Among them, Figure 1 shows the foldable electronic device 10 in the unfolded state. The unfolding angle α of the foldable electronic device 10 is, for example, 180°. At this time, the foldable electronic device 10 can achieve a large-screen display. Figure 2 shows the foldable electronic device 10 in the folded state. At this time, the foldable electronic device 10 has a smaller volume and is convenient to carry. Figure 3 shows the foldable electronic device 10 in the semi-unfolded state. At this time, the foldable electronic device 10 hovers at an angle between the unfolded state and the folded state. Exemplarily, the hovering angle β of the electronic device can be 120°, 130°, 140°, 150°, etc.

[0068] It should be noted that a slight deviation is allowed for the angles illustrated in this embodiment. For example, Figure 1 the unfolding angle α of the foldable electronic device 10 shown as 180° means that the unfolding angle α can be 180°, or can be approximately 180°, such as 170°, 175°, 185°, 190°, etc. The same understanding can be made for the angles illustrated in the following text.

[0069] In addition, Figures 1 to 3 the foldable electronic device 10 shown in is a foldable electronic device 10 that can be folded once. The foldable electronic device 10 includes two parts that can rotate relative to each other. When the two parts rotate to be coplanar, the foldable electronic device 10 is in the unfolded state (as shown in Figure 1 ). When the two parts rotate to overlap each other, the foldable electronic device 10 is in the folded state (as shown in Figure 2As shown). In other embodiments, the foldable electronic device 10 may also be a foldable electronic device 10 that can be folded more than twice. At this time, the foldable electronic device 10 may include a plurality of parts that are sequentially rotatably connected. Two adjacent parts may be relatively far away from each other to be unfolded to the unfolded state, and two adjacent parts may also be relatively close to each other to be folded to the folded state.

[0070] Figure 4 is Figure 1 a schematic exploded view of the foldable electronic device in. Refer to Figure 4 As shown, the foldable electronic device 10 includes a display screen 100 and a housing assembly 200. One side surface of the display screen 100 is used to display image information. Generally, this side surface of the display screen 100 is defined as its front surface, and the other side surface opposite to its front surface is its back surface. The housing assembly 200 surrounds the perimeter and the back surface of the display screen 100, and is used to support and fix the display screen 100 and provide protection. The front surface of the display screen 100 is exposed outside the housing assembly 200 for the user to view the content displayed on the display screen 100 or perform input operations on the foldable electronic device 10.

[0071] The display screen 100 of the foldable electronic device 10 may include a foldable screen 100a. The foldable screen 100a may include a first non-bendable portion 110, a bendable portion 120, and a second non-bendable portion 130 that are sequentially arranged in a first direction. Or, in the first direction, the bendable portion 120 is located between the first non-bendable portion 110 and the second non-bendable portion 130. Among them, the folding method of the foldable electronic device 10 may be Figures 1 - 3 the horizontal folding shown in, and at this time, the first direction may be Figure 4 the X direction shown in. Of course, the folding method of the foldable electronic device 10 may also be vertical folding, and this embodiment does not limit this.

[0072] Among them, the foldable screen 100a may be made of a flexible material so that the bendable portion 120 can be bent. Exemplarily, the foldable screen 100a may be an organic light-emitting diode (OLED) display screen.

[0073] The housing assembly 200 is used to support and fix the foldable screen 100a and drive the foldable screen 100a to switch between the folded state and the unfolded state. Refer to Figure 4 As shown, the housing assembly 200 includes a first housing 210, a second housing 220, and a rotating shaft 230. The rotating shaft 230 is connected between the first housing 210 and the second housing 220. The first housing 210 and the second housing 220 are rotatably connected through the rotating shaft 230, thereby realizing the relative rotation between the first housing 210 and the second housing 220.

[0074] The first housing 210 supports and fixes the first non-bending portion 110 of the folding screen 100a, and the second housing 220 supports and fixes the second non-bending portion 130 of the folding screen 100a. That is to say, the first non-bending portion 110 of the folding screen 100a is fixedly connected to the first housing 210, the second non-bending portion 130 of the folding screen 100a is fixedly connected to the second housing 220, and the bendable portion 120 of the folding screen 100a is arranged corresponding to the rotating shaft 230.

[0075] During the use of the foldable electronic device 10, the first non-bending portion 110 and the second non-bending portion 130 of the folding screen 100a always remain in a planar state, while the bendable portion 120 of the folding screen 100a can be bent. When the rotating shaft 230 drives the first housing 210 and the second housing 220 to rotate relative to each other, the first non-bending portion 110 and the second non-bending portion 130 of the folding screen 100a change their orientations accordingly, and the bendable portion 120 of the folding screen 100a bends or flattens with the change of the orientations of the first non-bending portion 110 and the second non-bending portion 130.

[0076] Among them, the first housing 210 and the second housing 220 can rotate in a direction away from each other until they are coplanar. At this time, the housing assembly 200 is in an unfolded state, and the folding screen 100a is in an unfolded state following the unfolding of the housing assembly 200 (as Figure 1 shown). The first housing 210 and the second housing 220 can also rotate in a direction close to each other until they are stacked relative to each other. At this time, the housing assembly 200 is in a folded state, and the folding screen 100a is in a folded state following the folding of the housing assembly 200 (as Figure 2 shown).

[0077] It should be noted that the foldable electronic device 10 in this embodiment can be an inward-foldable electronic device. When the foldable electronic device 10 is in a folded state, the first non-bending portion 110 and the second non-bending portion 130 of the folding screen 100a are relatively attached, the bendable portion 120 of the folding screen 100a is bent, and the housing assembly 200 is arranged outside the folding screen 100a. At this time, the housing assembly 200 can provide protection for the folding screen 100a to prevent the folding screen 100a from being scratched by hard objects.

[0078] Since when the inward-foldable electronic device is in a folded state, the folding screen 100a is surrounded by the housing assembly 200 and the front side of the folding screen 100a is folded inside, the folding screen 100a is not visible from the outside. Therefore, an additional straight screen 100b can be added to the inward-foldable electronic device. When the inward-foldable electronic device is in a folded state, the display function is realized by relying on this straight screen 100b (see Figure 2 or Figure 3)。In other words, the display screen 100 of the inward-foldable electronic device may include a folding screen 100a and a straight screen 100b. The folding screen 100a may be mounted on the front of the housing assembly 200. As the housing assembly 200 moves, the folding screen 100a can switch between the unfolded state and the folded state. When the foldable electronic device 10 is in the folded state, the folding screen 100a is not visible from the outside. The straight screen 100b may be mounted on the back of the housing assembly 200, and the straight screen 100b is used for display when the foldable electronic device 10 is in the folded state.

[0079] In addition, in some embodiments, the foldable electronic device 10, especially the inward-foldable electronic device, can rely on the damping force provided by the housing assembly 200 to make the housing assembly 200 hover at a semi-unfolded state between the folded state and the unfolded state, and the folding screen 100a stays at the semi-unfolded state with the housing assembly 200. At this time, the bendable portion 120 of the folding screen 100a is also in a bent state, and the bending degree of the bendable portion 120 is less than the bending degree when the folding screen 100a is in the folded state. The first non-bendable portion 110 and the second non-bendable portion 130 of the folding screen 100a are inclined relative to each other, and the included angle (hovering angle β) between the first non-bendable portion 110 and the second non-bendable portion 130 is, for example, 120°, 130°, 140°, or 150°, etc.

[0080] Continuing to refer to Figure 4 , in the housing assembly 200 of the foldable electronic device 10, both the first housing 210 and the second housing 220 may include a middle frame 201, and the first non-bendable portion 110 and the second non-bendable portion 130 of the folding screen 100a may be supported on the front of the corresponding middle frame 201. Among them, for the inward-foldable electronic device provided with the straight screen 100b, one of the first housing 210 and the second housing 220 may include a back cover 202, and the other may not include the back cover 202. Instead, the straight screen 100b is installed on the back of the middle frame 201 as an alternative.

[0081] In the first housing 210 and the second housing 220, the middle frame 201 and the back cover 202 (or the straight screen 100b) jointly enclose a receiving cavity, and some functional components (not shown in the figure) of the foldable electronic device 10 are installed in the receiving cavity. For example, a circuit board, a battery, a camera, a microphone, a speaker, and other functional components are installed in the receiving cavity.

[0082] Considering that users may inevitably bump or accidentally drop the foldable electronic device 10 during use, there is now a protective case 20 designed specifically for the foldable electronic device 10, such as a folding mobile phone protective case 20. The protective case 20 is sleeved on the outside of the foldable electronic device 10 to protect the foldable electronic device 10 from scratches, collisions, drops, and other damages.

[0083] The following takes the protective case 20 applied to the foldable electronic device with a straight screen 100b as an example to illustrate the protective case 20 of the foldable electronic device 10.

[0084] Figure 5 It is a schematic structural diagram of a protective case in the related art. Figure 6 For Figure 5 is a cross-sectional view of the protective case in along the line A-A. Refer to Figure 5 and Figure 6 As shown, in the related art, the protective case 1 of the foldable electronic device 10 may include a bottom case 11, a shaft cover 12, an outer PU layer 13, and an inner PU layer 14. The bottom case 11 is sleeved on one of the first housing 210 or the second housing 220 of the foldable electronic device 10 where the straight screen 100b is not provided. The bottom case 11 wraps the rear cover 202 and the middle frame 201 of the first housing 210 (or the second housing 220) to protect the first housing 210 (or the second housing 220). The shaft cover 12 is blocked outside the rotating shaft 230 of the foldable electronic device 10 to protect the rotating shaft 230. The outer PU layer 13 covers the outer wall surface of the shaft cover 12 and the outer wall surface of the bottom case 11, and the inner PU layer 14 covers the inner wall surface of the shaft cover 12 and a part of the inner wall surface of the bottom case 11. The outer PU layer 13 and the inner PU layer 14 connect the shaft cover 12 and the bottom case 11 together.

[0085] However, limited by the structure of the shaft cover 12 and the connection process between the inner PU layer 14, the outer PU layer 13 and the shaft cover 12, the inner PU layer 14 usually cannot cover the entire inner wall surface of the shaft cover 12 (the side wall surface of the shaft cover 12 facing the rotating shaft 230). The edge area of the inner wall surface of the shaft cover 12 on the side far from the bottom case 11 is usually exposed outside the inner PU layer 14 (see Figure 6 shown). During the process of the foldable electronic device 10 switching from the folded state to the unfolded state, as the housing assembly 200 moves, the angle between the shaft cover 12 and the bottom case 11 gradually increases. Under the tension of the inner PU layer 14 and the outer PU layer 13, the shaft cover 12 usually clings tightly to the foldable electronic device 10, and the shaft cover 12 sequentially passes over the rotating shaft 230, the middle frame 201, and the straight screen 100b.

[0086] During this process, the inner wall surface of the shaft cover 12 is exposed in the edge area outside the inner PU layer 14 and directly contacts and rubs against the middle frame 201 and the straight plate screen 100b. Since the hardness of the shaft cover 12 is relatively large while the hardness of the straight plate screen 100b (or the protective film attached to the straight plate screen 100b) is relatively small, and plus the pressure exerted on the shaft cover 12 when the user holds the foldable electronic device 10, the shaft cover 12 will inevitably scrape against the middle frame 201 and the straight plate screen 100b (or the protective film) of the foldable electronic device 10. During long-term use, as the foldable electronic device 10 repeatedly switches between the folded state and the unfolded state, scratches will be generated on the middle frame 201 and the straight plate screen 100b (or the protective film), especially causing significant wear to the straight plate screen 100b (or the protective film) with relatively small hardness, thereby resulting in damage to the appearance of the foldable electronic device 10 and affecting the appearance effect and service life of the foldable electronic device 10.

[0087] In view of this, an embodiment of the present application provides a protective case for a foldable electronic device. The protective case includes a bottom case, a shaft cover, and a flexible layer. The bottom case is sleeved outside the first housing or the second housing of the foldable electronic device to protect the first housing or the second housing. The shaft cover is blocked outside the rotating shaft of the foldable electronic device to protect the rotating shaft. The flexible layer covers at least part of the surface of the shaft cover, and the bottom case and the shaft cover are connected through the flexible layer. Among them, on the side of the shaft cover away from the bottom case and on the surface of the shaft cover facing the foldable electronic device, there is a risk area. By covering the risk area of the shaft cover with the flexible layer, during the process of the foldable electronic device switching between the folded state and the unfolded state, the flexible layer contacts and rubs against the surface of the foldable electronic device. In this way, the scraping phenomenon of the protective case against the foldable electronic device can be improved, preventing damage to the appearance of the foldable electronic device and ensuring the integrity and service life of the foldable electronic device.

[0088] Figure 7 It is a schematic structural diagram of a protective case provided by an embodiment of the present application. Figure 8 is Figure 7 the exploded structure diagram of the protective case in Figure 9 is Figure 7 the cross-sectional structure diagram of the protective case in

[0089] Referring to Figure 7 and Figure 8 As shown, the protective case 20 provided by an embodiment of the present application is applied to the foldable electronic device 10 and is used to protect the foldable electronic device 10. The protective case 20 surrounds the outer surface of the housing assembly 200 of the foldable electronic device 10 to prevent the housing assembly 200 from being scratched and protect the foldable electronic device 10 from being damaged in risk scenarios such as collision and falling.

[0090] Specifically, the protective case 20 includes a bottom case 300, a shaft cover 400, and a flexible layer 500. The bottom case 300 is disposed corresponding to the first housing 210 or the second housing 220 of the foldable electronic device 10. The bottom case 300 can be sleeved outside one of the first housing 210 and the second housing 220 where the straight plate screen 100b is not provided. The bottom case 300 covers the rear cover 202 and at least part of the middle frame 201 of the housing to protect the housing through the bottom case 300. The shaft cover 400 is blocked outside the rotating shaft 230 of the foldable electronic device 10 to protect the rotating shaft 230 through the shaft cover 400. The flexible layer 500 covers at least part of the surface of the shaft cover 400, and the flexible layer 500 is connected to the bottom case 300. To connect the shaft cover 400 and the bottom case 300 through the flexible layer 500, so that the protective case 20 is assembled into a whole. Moreover, the flexible layer 500 has a small hardness and a strong deformation ability, which can enhance the protection effect of the protective case 20 on the foldable electronic device 10.

[0091] It can be understood that when the foldable electronic device 10 is an inward-foldable electronic device with a straight plate screen 100b, since the straight plate screen 100b needs to be exposed for display, therefore, the bottom case 300 is sleeved outside one of the first housing 210 and the second housing 220 where the straight plate screen 100b is not provided, and one of the first housing 210 and the second housing 220 where the straight plate screen 100b is provided can be exposed outside. At this time, one side of the shaft cover 400 is connected to the bottom case 300 through the flexible layer 500, and the other side of the shaft cover 400 can be a free side that can move freely.

[0092] Moreover, when the foldable electronic device 10 is in a folded state, the rotating shaft 230 of the foldable electronic device 10 is completely exposed outside the first housing 210 and the second housing 220. At this time, the shaft cover 400 of the protective case 20 can be blocked outside the rotating shaft 230 to protect the rotating shaft 230. When the foldable electronic device 10 is switched from the folded state to the unfolded state, the first housing 210 and the second housing 220 of the foldable electronic device 10 gradually approach each other. During this process, the housing assembly 200 generates a force on the shaft cover 400 of the protective case 20 during movement, forcing the free side of the shaft cover 400 to gradually move away from the rotating shaft 230, so that both sides of the rotating shaft 230 can be smoothly hidden inside the first housing 210 and the second housing 220.

[0093] Refer to Figure 8 or Figure 9As shown, since the shaft cover 400 is only connected to the bottom case 300 on one side, when the foldable electronic device 10 is in the folded state, in order to stably and reliably shield the shaft 230 of the foldable electronic device 10 with the shaft cover 400 of the protective case 20, in some embodiments, a magnetic member 410 may be further provided inside the shaft cover 400. The entire shaft 230 may be made of a metal material, or a part of the structure of the shaft 230 may be made of a metal material, and a magnetic attraction force may be generated between the magnetic member 410 inside the shaft cover 400 and the shaft 230.

[0094] When the foldable electronic device 10 is in the folded state, relying on the magnetic attraction force generated between the magnetic member 410 and the shaft 230, the shaft cover 400 can be stably and reliably adsorbed on the shaft 230 to ensure the protective effect of the shaft cover 400 on the shaft 230. When the foldable electronic device 10 is switched from the folded state to the unfolded state, under the action of the housing assembly 200, the shaft cover 400 can overcome the magnetic attraction force and gradually move away from the shaft 230, and the shaft 230 gradually hides inside the first housing 210 and the second housing 220. When the foldable electronic device 10 is switched from the unfolded state to the folded state, the first housing 210 and the second housing 220 gradually move away from each other, the shaft 230 is gradually exposed, and the magnetic attraction force between the magnetic member 410 and the shaft 230 can again cause the shaft cover 400 to gradually adsorb on the shaft 230.

[0095] Among them, only one magnetic member 410 may be provided on the shaft cover 400. At this time, the magnetic member 410 may be provided at the middle part in the length direction of the shaft cover 400, so as to generate a magnetic attraction force at the middle part of the shaft cover 400 and the shaft 230, ensure the balance of the acting force between the shaft cover 400 and the shaft 230, and ensure the stability and reliability of the adsorption of the shaft cover 400. Or, more than two magnetic members 410 may be provided on the shaft cover 400. At this time, the magnetic members 410 may be sequentially arranged along the length direction of the shaft cover 400, and there may be a gap between adjacent magnetic members 410, so as to generate magnetic attraction forces at multiple parts between the shaft cover 400 and the shaft 230, and make the adsorption of the shaft cover 400 more secure.

[0096] Exemplarily, a receiving groove 420 may be formed on the shaft cover 400 of the protective case 20 (see Figure 10 shown). The receiving groove 420 may be located on the side of the shaft cover 400 facing the shaft 230, the notch of the receiving groove 420 faces the shaft 230, and the magnetic member 410 may be provided in the receiving groove 420. An adhesive layer 430 may be provided in the receiving groove 420, and the magnetic member 410 may be adhered to the receiving groove 420 through the adhesive layer 430. The adhesive layer 430 may be formed in the receiving groove 420 by dotting, or the adhesive layer 430 may also be attached to the entire layer in the receiving groove 420.

[0097] The depth of the receiving groove 420 can be greater than the thickness of the magnetic member 410, and the magnetic member 410 can be completely received within the shaft cover 400. For example, the surface of the magnetic member 410 can be flush with the surface of the shaft cover 400 facing the rotating shaft 230, or the surface of the magnetic member 410 can be lower than the surface of the shaft cover 400 facing the rotating shaft 230. In this way, the surface of the magnetic member 410 is not higher than the surface of the shaft cover 400 facing the rotating shaft 230, which can ensure the flatness of this side surface of the shaft cover 400, so as not to affect the adhesion of the flexible layer 500 to this side surface of the shaft cover 400, and ensure the stable and reliable connection between the flexible layer 500 and the shaft cover 400.

[0098] As for the flexible layer 500 that covers at least part of the surface of the shaft cover 400 and is connected to the bottom shell 300, in some embodiments, the flexible layer 500 can be a separately formed flexible member, and the flexible layer 500 can be bonded to the surfaces of the shaft cover 400 and the bottom shell 300. For example, the flexible layer 500 can be made of polyurethane (abbreviated as PU), or rather, the flexible layer 500 is a PU skin layer. Using the PU skin layer as the flexible layer 500, the PU skin layer is a simulated leather material, with a genuine leather texture, high strength, good wear resistance, and excellent tear resistance. While playing the role of firmly connecting the shaft cover 400 and the bottom shell 300, it can also improve the appearance effect of the protective shell 20.

[0099] Moreover, the PU skin layer has good elasticity and high tensile strength, and there is a certain tension in the PU skin layer. When the folding electronic device 10 is switched from the folded state to the unfolded state, under the action of the housing assembly 200, the angle between the shaft cover 400 and the bottom shell 300 gradually increases. Under the tension of the PU skin layer, the supportability of the shaft cover 400 is enhanced, and the free side of the shaft cover 400 will not move away from the folding electronic device 10, but can be supported on the surface of the folding electronic device 10. As the unfolding angle of the housing assembly 200 gradually increases, the free side of the shaft cover 400 can slide along the surface of the folding electronic device 10.

[0100] Relying on the tension of the PU skin layer, during the process of the folding electronic device 10 switching between the folded state and the unfolded state, the free side of the shaft cover 400 can always be supported on the surface of the folding electronic device 10. When the folding electronic device 10 moves to the folded state, under the action of the magnetic attraction force and the PU skin layer, the shaft cover 400 can be automatically adsorbed on the rotating shaft 230 of the folding electronic device 10. In this way, regardless of the state of the folding electronic device 10, the shaft cover 400 of the protective shell 20 always closely adheres to the surface of the folding electronic device 10, without the need for the user to manually adjust the position of the shaft cover 400, and the use of the protective shell 20 is more simple and convenient.

[0101] In some other embodiments, the flexible layer 500 may be an injection-molded layer integrally formed on the surface of the shaft cover 400, and the injection-molded layer is, for example, a silicone layer 430. The bottom shell 300 of the protective shell 20 and the shaft cover 400 may be injection-molded first, and then the bottom shell 300 and the shaft cover 400 are placed in a mold, and an injection-molded layer is injection-molded on the shaft cover 400 and the bottom shell 300, so that the injection-molded layer covers at least part of the surface of the shaft cover 400, and the shaft cover 400 and the bottom shell 300 are connected together through the injection-molded layer.

[0102] By injection-molding an injection-molded layer on the surface of the shaft cover 400 as the flexible layer 500, the flexible layer 500 and the shaft cover 400, and the flexible layer 500 and the bottom shell 300 are all integral structures. The connection strength between the flexible layer 500 and the shaft cover 400, and the flexible layer 500 and the bottom shell 300 is high, and the integrity and reliability of the protective shell 20 are good.

[0103] Different from the PU leather layer, the injection-molded layer injection-molded on the surface of the shaft cover 400 is usually more flexible and has lower strength, and the injection-molded layer does not have the tension of the PU leather layer. Therefore, when the folding electronic device 10 is switched from the folded state to the unfolded state, as the angle between the shaft cover 400 and the bottom shell 300 increases, the deformation degree of the injection-molded layer becomes larger. When the folding electronic device 10 is in the unfolded state, under the gravity of the shaft cover 400, the shaft cover 400 may be completely separated from the surface of the folding electronic device 10 and suspended. At this time, when the folding electronic device 10 is switched from the unfolded state to the folded state, the user needs to manually adjust the position of the shaft cover 400 so that the shaft cover 400 is adsorbed on the rotating shaft 230.

[0104] For the convenience of description, in this embodiment, the side wall surface of the shaft cover 400 of the protective shell 20 facing the rotating shaft 230 of the folding electronic device 10 is defined as the inner wall surface of the shaft cover 400, and the side wall surface of the shaft cover 400 facing away from the rotating shaft 230 is defined as the outer wall surface of the shaft cover 400. The surface of the bottom shell 300 of the protective shell 20 facing the folding electronic device 10 is defined as the inner surface of the bottom shell 300, and the surface of the bottom shell 300 facing away from the folding electronic device 10 is defined as the outer surface of the bottom shell 300.

[0105] As described above, since there is a magnetic attraction force between the shaft cover 400 of the protective case 20 and the rotating shaft 230 of the foldable electronic device 10, and during the operation of the foldable electronic device 10, the user usually holds the side where the shaft cover 400 is located, generating an upward force on the shaft cover 400 towards the foldable electronic device 10. Therefore, during the process of the foldable electronic device 10 switching from the folded state to the unfolded state, the side of the inner wall surface of the shaft cover 400 away from the bottom case 300 usually contacts the surface of the foldable electronic device 10, successively passing over the rotating shaft 230, the middle frame 201, and the straight plate screen 100b of the foldable electronic device 10. Especially when using a PU leather layer as the flexible layer 500 covering the surface of the shaft cover 400, under the action of the tension of the PU leather layer, when the foldable electronic device 10 is in the unfolded state, the side of the inner wall surface of the shaft cover 400 away from the bottom case 300 usually also contacts the straight plate screen 100b of the foldable electronic device 10.

[0106] In this regard, in this embodiment, a risk area of the shaft cover 400 is defined, and the risk area of the shaft cover 400 is located on the side of the inner wall surface of the shaft cover 400 away from the bottom case 300. During the process of the foldable electronic device 10 switching from the folded state to the unfolded state, the risk area of the shaft cover 400 may contact the surface of the foldable electronic device 10 and slide along the surface of the foldable electronic device 10. When the foldable electronic device 10 is in the unfolded state, the risk area of the shaft cover 400 may contact the straight plate screen 100b of the foldable electronic device 10.

[0107] Combined Figure 8 and Figure 9 As shown, as an implementation manner, the flexible layer 500 covering the surface of the shaft cover 400 may include a first flexible layer 510 and a second flexible layer 520. The first flexible layer 510 may cover the outer wall surface of the shaft cover 400, and the second flexible layer 520 may cover the inner wall surface of the shaft cover 400. At least one of the first flexible layer 510 and the second flexible layer 520 is connected to the bottom case 300 to realize the connection between the shaft cover 400 and the bottom case 300, so that the protective case 20 is assembled into a whole.

[0108] The first flexible layer 510 and the second flexible layer 520 respectively cover the two side wall surfaces of the shaft cover 400, which can make both side wall surfaces of the shaft cover 400 have the texture of the flexible layer 500, so as to improve the appearance effect of the protective case 20. Moreover, the first flexible layer 510 and the second flexible layer 520 protect the two side wall surfaces of the shaft cover 400, which can prevent the two side wall surfaces of the shaft cover 400 from being worn or scratched, so as to improve the reliability and service life of the protective case 20.

[0109] Among them, the first flexible layer 510 can extend to cover at least part of the outer surface of the bottom shell 300, and the second flexible layer 520 can extend to cover at least part of the inner surface of the bottom shell 300. The two side wall surfaces of the shaft cover 400 are respectively connected to the two side surfaces of the bottom shell 300 through the first flexible layer 510 and the second flexible layer 520. Under the combined action of the first flexible layer 510 and the second flexible layer 520, the shaft cover 400 and the bottom shell 300 are stably and reliably connected. During the process of the folding electronic device 10 switching from the folded state to the unfolded state and when the folding electronic device 10 is in the unfolded state, the first flexible layer 510 and the second flexible layer 520 at the connection between the shaft cover 400 and the bottom shell 300 generate a force that tends to make the two converge, which can keep the first flexible layer 510 and the second flexible layer 520 in close contact with the shaft cover 400 and the bottom shell 300, improving the integrity and reliability of the protective shell 20.

[0110] On the premise of ensuring the connection reliability between the shaft cover 400 and the bottom shell 300, the first flexible layer 510 can extend to cover at least part of the outer surface of the bottom shell 300, and the second flexible layer 520 can only cover the inner wall surface of the shaft cover 400. The shaft cover 400 and the bottom shell 300 are only connected by the first flexible layer 510. Alternatively, the first flexible layer 510 can only cover the outer wall surface of the shaft cover 400, and the second flexible layer 520 can extend to cover at least part of the inner surface of the bottom shell 300. The shaft cover 400 and the bottom shell 300 are only connected by the second flexible layer 520. The embodiments of the present application do not limit this.

[0111] When the first flexible layer 510 is connected to the outer surface of the shell, the first flexible layer 510 can completely cover the outer surface of the shell. In this way, when the protective shell 20 is sleeved on the folding electronic device 10, the appearance surface of the protective shell 20 is almost completely covered by the first flexible layer 510, which can improve the appearance effect of the protective shell 20, making the protective shell 20 more concise and beautiful. Moreover, the first flexible layer 510 can comprehensively protect the bottom shell 300 to prevent the bottom shell 300 from being worn or scratched. In addition, because the first flexible layer 510 is soft in texture, it is also beneficial to improve the holding comfort of the protective shell 20.

[0112] When the second flexible layer 520 is connected to the inner surface of the bottom shell 300, the second flexible layer 520 can cover part of the inner surface of the bottom shell 300. At this time, the shell of the folding electronic device 10 can be directly in contact with the bottom shell 300. The bottom shell 300 has high strength and hardness, and the bottom shell 300 can be stably and reliably sleeved outside the shell, and it is more conducive to the heat dissipation of the folding electronic device 10. Of course, the second flexible layer 520 can also completely cover the inner surface of the bottom shell 300. The shell of the folding electronic device 10 can be in contact with the second flexible layer 520, and the friction between the shell and the second flexible layer 520 is relatively large, which can also ensure the stability and reliability of the shell.

[0113] Combined with Figure 8 and Figure 9 As shown, when the second flexible layer 520 only covers a part of the inner surface of the bottom shell 300, a mounting groove 310 can be provided on the inner surface of the bottom shell 300, and the second flexible layer 520 can be attached within the mounting groove 310 on the inner surface of the bottom shell 300. The thickness of the second flexible layer 520 can be less than the depth of the mounting groove 310, and the surface of the second flexible layer 520 is not higher than the inner surface of the bottom shell 300, which can ensure the flatness of the inner surface of the bottom shell 300 and avoid interference with the housing of the foldable electronic device 10.

[0114] Among them, since the second flexible layer 520 extends from the inner wall surface of the shaft cover 400 to the inner surface of the bottom shell 300, thus, the mounting groove 310 can be located on the inner surface of the bottom shell 300 close to the shaft cover 400, and the mounting groove 310 can communicate with the side wall of the bottom shell 300 facing the shaft cover 400.

[0115] Since the outer wall surface of the shaft cover 400 is covered with the first flexible layer 510 and the inner wall surface of the shaft cover 400 is covered with the second flexible layer 520, compared with integrally forming an injection layer on the shaft cover 400 by an injection molding process, it is easier to manufacture the protective shell 20 by separately forming the first flexible layer 510 and the second flexible layer 520 and attaching them to the two side wall surfaces of the shaft cover 400 respectively. For example, both the first flexible layer 510 and the second flexible layer 520 can be PU leather layers. The PU leather layer serving as the first flexible layer 510 is attached to the outer wall surface of the shaft cover 400, and the PU leather layer serving as the second flexible layer 520 is attached to the inner wall surface of the shaft cover 400.

[0116] Moreover, when the outer wall surface of the shaft cover 400 is covered with the first flexible layer 510 and the inner wall surface of the shaft cover 400 is covered with the second flexible layer 520, on the side of the shaft cover 400 away from the bottom shell 300, the first flexible layer 510 and the second flexible layer 520 can have a gap. With such a setting, it is convenient to attach the first flexible layer 510 and the second flexible layer 520 to the two side wall surfaces of the shaft cover 400 respectively, and avoid interference between the first flexible layer 510 and the second flexible layer 520. Also, the first flexible layer 510 will not extend around the edge of the shaft cover 400 to the inner wall surface of the shaft cover 400, and the second flexible layer 520 will not extend around the edge of the shaft cover 400 to the outer wall surface of the shaft cover 400, which can prevent the appearance effect of the protective shell 20 from being affected due to the difference in the materials and colors of the two.

[0117] Regarding the selection of the characteristics of the first flexible layer 510 and the second flexible layer 520, at least one of the first flexible layer 510 and the second flexible layer 520 can be a double-sided elastic PU leather layer. The double-sided elastic PU leather layer means that the PU leather layer has elasticity only in the transverse direction (the width direction of the PU leather layer) or the longitudinal direction (the length direction of the PU leather layer). By making at least one of the first flexible layer 510 and the second flexible layer 520 a double-sided elastic PU leather layer, the overall tension of the two is within a suitable range. In this way, when the foldable electronic device 10 is switched from the unfolded state to the folded state, the magnetic suction force between the shaft cover 400 and the rotating shaft 230 of the foldable electronic device 10 can overcome the tension of the flexible layer 500 in the protective shell 20, so that the shaft cover 400 is automatically adsorbed on the rotating shaft 230.

[0118] For example, both the first flexible layer 510 and the second flexible layer 520 are double-sided elastic PU leather layers. Or, the first flexible layer 510 is a double-sided elastic PU leather layer and the second flexible layer 520 is a four-way elastic PU leather layer. Or, the first flexible layer 510 is a four-way elastic PU leather layer and the second flexible layer 520 is a double-sided elastic PU leather layer. The four-way elastic PU leather layer means that the PU leather layer has elasticity in both the transverse and longitudinal directions. Compared with the double-sided elastic PU leather layer, the four-way elastic PU leather layer has a greater tension.

[0119] If both the first flexible layer 510 and the second flexible layer 520 are selected as four-way elastic PU leather layers, or both the first flexible layer 510 and the second flexible layer 520 are double-sided elastic PU layers with the same elastic direction (the elastic directions of the first flexible layer 510 and the second flexible layer 520 are both transverse or both longitudinal), then the overall tension of the first flexible layer 510 and the second flexible layer 520 is relatively large. At this time, it may be due to the excessive tension of the flexible layer 500 at the connection between the shaft cover 400 and the bottom shell 300, and the magnetic suction force between the shaft cover 400 and the rotating shaft 230 cannot overcome the tension of the protective shell 20, resulting in the shaft cover 400 not being able to be automatically adsorbed on the rotating shaft 230, and the user needs to manually adjust the shaft cover 400 to be adsorbed on the rotating shaft 230.

[0120] Therefore, when both the first flexible layer 510 and the second flexible layer 520 are double-sided elastic PU leather layers, the elastic direction of one of the first flexible layer 510 and the second flexible layer 520 can be its own width direction (transverse), and the elastic direction of the other can be its own length direction (longitudinal). In this way, the elastic directions of the first flexible layer 510 and the second flexible layer 520 are perpendicular to each other, which can weaken the overall tension of the first flexible layer 510 and the second flexible layer 520, the tension of the flexible layer 500 at the connection between the shaft cover 400 and the bottom shell 300 is moderate, and the magnetic suction force between the shaft cover 400 and the rotating shaft 230 can overcome the tension of the protective shell 20, enabling the shaft cover 400 to be automatically adsorbed on the rotating shaft 230.

[0121] Refer to Figure 9As shown, in this embodiment, the coverage area of the second flexible layer 520 provided on the inner wall surface of the shaft cover 400 is relatively large, and the second flexible layer 520 extends to be close to the edge of the shaft cover 400 away from the bottom case 300. The second flexible layer 520 covers the risk area on the inner wall surface of the shaft cover 400 ( Figure 9 as shown by the dashed box in the locally enlarged structure). With such a setting, during the process of the folding electronic device 10 switching from the folded state to the unfolded state, the shaft cover 400 can contact the folding electronic device 10 through the second flexible layer 520, and the second flexible layer 520 slides along the surface of the folding electronic device 10. When the folding electronic device 10 is in the unfolded state, the shaft cover 400 can also contact the folding electronic device 10 through the second flexible layer 520, for example, contacting the straight plate screen 100b of the folding electronic device 10.

[0122] Since the second flexible layer 520 has low strength and strong deformation ability, the acting force between the second flexible layer 520 and the surface of the folding electronic device 10 is small, and the friction force between the two is small. In this way, the scraping phenomenon of the shaft cover 400 on the folding electronic device 10 can be improved, preventing the protective case 20 from damaging the appearance of the folding electronic device 10, ensuring the integrity of the folding electronic device 10, enhancing the appearance effect of the folding electronic device 10, and prolonging the service life of the folding electronic device 10.

[0123] Continue to refer to Figure 9 , one side surface of the shaft cover 400 away from the bottom case 300 has an outer rounded corner portion 440, and the shaft cover 400 has a smooth transition at the outer rounded corner portion 440. The outer rounded corner portion 440 causes the size of the edge on this side of the shaft cover 400 to shrink inward, creating a certain avoidance space. When this side of the shaft cover 400 contacts the surface of the folding electronic device 10, the edge on this side of the shaft cover 400 will not interfere with the folding electronic device 10. Moreover, the outer rounded corner portion 440 can prevent stress concentration on the edge on this side of the shaft cover 400, weaken the concentrated stress condition on the edge on this side of the shaft cover 400, reduce the risk of damage to the edge on this side of the shaft cover 400 due to collision or drop, and can improve the reliability and service life of the shaft cover 400. In addition, the outer rounded corner portion 440 makes the edge on this side of the shaft cover 400 smoothly extend, which helps to improve the appearance effect of the shaft cover 400.

[0124] The risk area on the side of the inner wall surface of the shaft cover 400 away from the bottom case 300 can be connected to the outer rounded corner portion 440 on this side edge of the shaft cover 400. Or rather, the risk area of the shaft cover 400 is adjacently arranged to the outer rounded corner portion 440 of the shaft cover 400. At this time, the second flexible layer 520 covering the risk area of the shaft cover 400 can also be connected to the outer rounded corner portion 440 of the shaft cover 400.

[0125] Figure 10 For Figure 7Structural diagram of the shaft cover of the protective case from a certain perspective. Figure 11 is Figure 10 Structural diagram of the shaft cover from another perspective in Figure 12 is Figure 11 Cross-sectional view of the shaft cover along the C-C line in

[0126] Combined with Figure 10 and Figure 11 As shown, in order to position the flexible layer 500 covering the surface of the shaft cover 400, mounting grooves 450 can also be provided on the surface of the shaft cover 400, and the flexible layer 500 can be mounted in the mounting grooves 450. When the outer wall surface of the shaft cover 400 is covered with the first flexible layer 510 and the inner wall surface of the shaft cover 400 is covered with the second flexible layer 520, an outer mounting groove 451 can be formed on the outer wall surface of the shaft cover 400 (see Figure 10 ), and the first flexible layer 510 can be mounted in the outer mounting groove 451. Similarly, an inner mounting groove 452 can be formed on the inner wall surface of the shaft cover 400 (see Figure 11 ), and the second flexible layer 520 can be mounted in the inner mounting groove 452.

[0127] Among them, as shown in reference to Figure 12 , on the side of the shaft cover 400 close to the bottom case 300, the outer mounting groove 451 on the outer wall surface of the shaft cover 400 can extend to the edge of this side of the shaft cover 400, and the inner mounting groove 452 on the inner wall surface of the shaft cover 400 can also extend to the edge of this side of the shaft cover 400. The outer mounting groove 451 and the inner mounting groove 452 communicate with each other at the edge of this side of the shaft cover 400. In this way, the first flexible layer 510 covering the outer wall surface of the shaft cover 400 can extend along the outer mounting groove 451 to connect with the outer surface of the bottom case 300. Similarly, the second flexible layer 520 covering the inner wall surface of the shaft cover 400 can also extend along the inner mounting groove 452 to connect with the inner surface of the bottom case 300.

[0128] On the side of the shaft cover 400 far from the bottom case 300, there is a gap between the outer mounting groove 451 on the outer wall surface of the shaft cover 400 and the inner mounting groove 452 on the inner wall surface of the shaft cover 400. In other words, on the side of the shaft cover 400 far from the bottom case 300, there is a gap between the groove walls of the outer mounting groove 451 and the groove walls of the inner mounting groove 452. In this way, the groove walls of the outer mounting groove 451 can position the first flexible layer 510, and the groove walls of the inner mounting groove 452 can position the second flexible layer 520. And under the positioning action of the outer mounting groove 451 and the inner mounting groove 452, there is a gap between the first flexible layer 510 and the second flexible layer 520, which can avoid interference between the two.

[0129] The edge of the first flexible layer 510 is located on the outer wall surface of the shaft cover 400, and the edge of the second flexible layer 520 is located on the inner wall surface of the shaft cover 400. The edges of the first flexible layer 510 and the second flexible layer 520 do not bypass the arc surface of the side edge of the shaft cover 400, which facilitates the arrangement of the first flexible layer 510 and the second flexible layer 520 on the shaft cover 400. Especially when both the first flexible layer 510 and the second flexible layer 520 are PU leather layers, the first flexible layer 510 covering the outer wall surface of the shaft cover 400 and the second flexible layer 520 covering the inner wall surface of the shaft cover 400 usually have different materials. By making the second flexible layer 520 completely located on the inner wall surface of the shaft cover 400, the exposure of the second flexible layer 520 is avoided, ensuring the appearance effect of the protective shell 20.

[0130] Among them, the inner installation groove 452 on the inner wall surface of the shaft cover 400 covers the risk area of the shaft cover 400. For example, the groove wall of the inner installation groove 452 can be connected to the outer rounded corner portion 440 of the shaft cover 400. In this way, the edge of the second flexible layer 520 can abut against the groove wall of the inner installation groove 452, and the second flexible layer 520 can also cover the risk area of the shaft cover 400.

[0131] Figure 13 This is a cross-sectional structure diagram of another protective shell provided by an embodiment of the present application. Refer to Figure 13 As shown, as another implementation manner, the flexible layer 500 covering the shaft cover 400 may include a first flexible layer 510. The first flexible layer 510 covers the outer wall surface of the shaft cover 400, and the first flexible layer 510 bypasses the side edge of the shaft cover 400 away from the bottom shell 300 and extends to the inner wall surface of the shaft cover 400. That is to say, the first flexible layer 510 bypasses the side edge of the shaft cover 400 away from the bottom shell 300 and extends from the outer wall surface of the shaft cover 400 to the inner wall surface of the shaft cover 400.

[0132] At this time, the first flexible layer 510 can cover the risk area on the inner wall surface of the shaft cover 400 ( Figure 13 shown by the dotted line frame in). During the process of the folding electronic device 10 switching from the folded state to the unfolded state, the shaft cover 400 can contact the surface of the folding electronic device 10 through the first flexible layer 510, and the first flexible layer 510 slides along the surface of the folding electronic device 10. When the folding electronic device 10 is in the unfolded state, the shaft cover 400 can also contact the folding electronic device 10 through the first flexible layer 510, for example, contacting the straight plate screen 100b of the folding electronic device 10.

[0133] Due to the low strength and strong deformation ability of the first flexible layer 510, the force between the first flexible layer 510 and the surface of the foldable electronic device 10 is small, and the frictional force between the two is small. In this way, the rubbing phenomenon of the shaft cover 400 against the foldable electronic device 10 can be improved, the appearance of the foldable electronic device 10 can be prevented from being damaged by the protective case 20, the integrity of the foldable electronic device 10 can be ensured, the appearance effect of the foldable electronic device 10 can be improved, and the service life of the foldable electronic device 10 can be extended.

[0134] As Figure 13 shown, in some examples, the flexible layer 500 in the protective case 20 may only include the first flexible layer 510.

[0135] At this time, the first flexible layer 510 can extend from the outer wall surface of the shaft cover 400 to cover at least part of the outer surface of the bottom case 300, and the first flexible layer 510 can also extend from the inner wall surface of the shaft cover 400 to cover at least part of the inner surface of the bottom case 300. By connecting the two side wall surfaces of the shaft cover 400 with the two side surfaces of the bottom case 300 respectively through the first flexible layer 510, the connection between the shaft cover 400 and the bottom case 300 can be ensured to be stable and reliable. Moreover, during the process of the foldable electronic device 10 switching from the folded state to the unfolded state and when the foldable electronic device 10 is in the unfolded state, the first flexible layers 510 on both sides at the connection between the shaft cover 400 and the bottom case 300 generate a converging force, which can keep the first flexible layer 510 in close contact with the shaft cover 400 and the bottom case 300, improving the integrity and reliability of the protective case 20.

[0136] On the premise of ensuring the connection reliability between the shaft cover 400 and the bottom case 300, the first flexible layer 510 can extend from the outer wall surface of the shaft cover 400 to cover at least part of the outer surface of the bottom case 300, and the first flexible layer 510 covers at least part of the inner wall surface of the shaft cover 400. The shaft cover 400 and the bottom case 300 are connected only by the first flexible layer 510 covering the outer surface of the bottom case 300. Or, the first flexible layer 510 can extend from the inner wall surface of the shaft cover 400 to cover at least part of the inner surface of the bottom case 300, and the first flexible layer 510 covers at least part of the outer wall surface of the shaft cover 400. The shaft cover 400 and the bottom case 300 are connected only by the first flexible layer 510 covering the inner surface of the bottom case 300. The embodiments of the present application do not limit this.

[0137] When the first flexible layer 510 is connected to the outer surface of the bottom case 300, the first flexible layer 510 can completely cover the outer surface of the bottom case 300. When the first flexible layer 510 or the second flexible layer 520 is connected to the inner surface of the bottom case 300, the first flexible layer 510 can cover part of the inner surface of the bottom case 300, or the first flexible layer 510 can also completely cover the inner surface of the bottom case 300. This will not be elaborated here.

[0138] In some other examples, the flexible layer 500 in the protective shell 20 may also include a second flexible layer 520, and the second flexible layer 520 covers at least part of the inner surface of the bottom shell 300 at least.

[0139] At this time, the first flexible layer 510 may only cover part of the inner wall surface of the shaft cover 400, and the second flexible layer 520 may extend from the inner surface of the bottom shell 300 to cover part of the inner wall surface of the shaft cover 400. As an example, the first flexible layer 510 may extend from the outer wall surface of the shaft cover 400 to connect with the outer surface of the bottom shell 300, and the shaft cover 400 and the bottom shell 300 are jointly connected by the first flexible layer 510 and the second flexible layer 520. As another example, the first flexible layer 510 may only cover the outer wall surface of the shaft cover 400, and the shaft cover 400 and the bottom shell 300 are only connected by the second flexible layer 520.

[0140] Alternatively, the first flexible layer 510 may completely cover the inner wall surface of the shaft cover 400 and extend to connect with the inner surface of the bottom shell 300, and the second flexible layer 520 only covers part of the inner surface of the bottom shell 300. As an example, the first flexible layer 510 may extend from the outer wall surface of the shaft cover 400 to connect with the outer surface of the bottom shell 300, and the shaft cover 400 and the bottom shell 300 are jointly connected by the first flexible layer 510 covering both side surfaces of the bottom shell 300. As another example, the first flexible layer 510 covers at least part of the outer wall surface of the shaft cover 400, and the shaft cover 400 and the bottom shell 300 are only connected by the first flexible layer 510 covering the inner surface of the bottom shell 300.

[0141] Or, the first flexible layer 510 may cover at least part of the inner wall surface of the shaft cover 400, and the second flexible layer 520 covers at least part of the inner wall surface of the bottom shell 300. The inner wall surface of the shaft cover 400 is not connected to the inner surface of the bottom shell 300, and the first flexible layer 510 extends from the outer wall surface of the shaft cover 400 to connect with the outer surface of the bottom shell 300. The shaft cover 400 and the bottom shell 300 are only connected by the first flexible layer 510 covering the outer surface of the bottom shell 300.

[0142] When the first flexible layer 510 is connected to the outer surface of the bottom shell 300, the first flexible layer 510 may completely cover the outer surface of the bottom shell 300. When the second flexible layer 520 is connected to the inner surface of the bottom shell 300, the second flexible layer 520 may cover part of the inner surface of the bottom shell 300, or the second flexible layer 520 may also completely cover the inner surface of the bottom shell 300. When the first flexible layer 510 and the second flexible layer 520 jointly cover the inner surface of the bottom shell 300, the first flexible layer 510 and the second flexible layer 520 may completely cover the inner surface of the bottom shell 300.

[0143] Wherein, when the first flexible layer 510 or the second flexible layer 520 only covers a part of the inner surface of the bottom shell 300, a mounting groove 310 may be provided on the inner surface of the bottom shell 300 (see Figure 8 shown). The mounting groove 310 may be located on the inner surface of the bottom shell 300 on the side close to the shaft cover 400, and the mounting groove 310 may communicate with the side wall of the bottom shell 300 facing the shaft cover 400. The first flexible layer 510 or the second flexible layer 520 may be attached in the mounting groove 310 on the inner surface of the bottom shell 300. The thickness of the first flexible layer 510 or the second flexible layer 520 may be less than the depth of the mounting groove 310, and the surface of the first flexible layer 510 or the second flexible layer 520 is not higher than the inner surface of the bottom shell 300. Details are not described herein again.

[0144] Wherein, when the flexible layer 500 in the protective shell 20 only includes the first flexible layer 510, the first flexible layer 510 may be a PU skin layer attached to the surface of the shaft cover 400, or the first flexible layer 510 may be an injection molding layer integrally formed on the surface of the shaft cover 400. When the flexible layer 500 in the protective layer includes the first flexible layer 510 and the second flexible layer 520, the first flexible layer 510 and the second flexible layer 520 may be PU skin layers attached to the surface of the shaft cover 400, or the first flexible layer 510 and the second flexible layer 520 may be injection molding layers integrally formed on the surface of the shaft cover 400 and / or the bottom shell 300.

[0145] When the flexible layer 500 in the protective shell 20 includes the first flexible layer 510 and the second flexible layer 520, and the first flexible layer 510 and the second flexible layer 520 are PU skin layers, both the first flexible layer 510 and the second flexible layer 520 may be double-sided elastic PU skin layers, or one of the first flexible layer 510 and the second flexible layer 520 is a double-sided elastic PU skin layer and the other is a four-way elastic PU skin layer. When both the first flexible layer 510 and the second flexible layer 520 adopt double-sided elastic PU skin layers, the elastic force direction of one of the first flexible layer 510 and the second flexible layer 520 may be horizontal, and the elastic force direction of the other may be vertical. Details are not described herein again.

[0146] Figure 14 is Figure 13 a structural diagram of a perspective view of the shaft cover of the protective shell in Figure 15 is Figure 14 a structural diagram of another perspective view of the shaft cover in Figure 16 is Figure 15 a cross-sectional view of the shaft cover in

[0147] Combined with Figure 14 and Figure 15As shown, similarly, in order to position the flexible layer 500 covering the surface of the shaft cover 400, the surface of the shaft cover 400 may also be provided with a mounting groove 450, and the flexible layer 500 is mounted in the mounting groove 450. When the first flexible layer 510 covering the outer wall surface of the shaft cover 400 bypasses the edge of the shaft cover 400 away from the bottom case 300 and extends to the inner wall surface of the shaft cover 400, on the side of the shaft cover 400 away from the bottom case 300, the outer mounting groove 451 opened on the outer wall surface of the shaft cover 400 may extend to the edge of this side of the shaft cover 400, and the inner mounting groove 452 opened on the inner wall surface of the shaft cover 400 may also extend to the edge of this side of the shaft cover 400. The outer mounting groove 451 and the inner mounting groove 452 communicate with each other on the side of the shaft cover 400 away from the bottom case 300. In this way, the part of the first flexible layer 510 covering the outer wall surface of the shaft cover 400 can be mounted in the outer mounting groove 451, and the part of the first flexible layer 510 covering the inner wall surface of the shaft cover 400 can pass through the outer mounting groove 451 and be mounted in the inner mounting groove 452.

[0148] Referring to Figure 16 As shown, when the outer wall surface of the shaft cover 400 and the outer surface of the bottom case 300, and the inner wall surface of the shaft cover 400 and the inner wall surface of the bottom case 300 are all connected by the flexible layer 500, on the side of the shaft cover 400 close to the bottom case 300, the outer mounting groove 451 on the outer wall surface of the shaft cover 400 may extend to the edge of this side of the shaft cover 400, and the inner mounting groove 452 on the inner wall surface of the shaft cover 400 may also extend to the edge of this side of the shaft cover 400. The outer mounting groove 451 and the inner mounting groove 452 communicate with each other at the edge on the side of the shaft cover 400 close to the bottom case 300. In this way, the first flexible layer 510 covering the outer wall surface of the shaft cover 400 can extend along the outer mounting groove 451 to be connected to the outer surface of the bottom case 300. Similarly, the first flexible layer 510 or the second flexible layer 520 covering the inner wall surface of the shaft cover 400 can also extend along the inner mounting groove 452 to be connected to the inner surface of the bottom case 300.

[0149] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mount", "connect", and "couple" should be understood in a broad sense. For example, it may be a fixed connection, or an indirect connection through an intermediate medium, or the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the foregoing terms in the embodiments of the present application can be understood according to specific situations.

[0150] The terms "first", "second", "third", "fourth", etc. (if any) in the description, claims, and the foregoing drawings of the embodiments of the present application are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence.

Claims

1. A protective case for a foldable electronic device, characterized in that: include: A bottom shell, which is sleeved outside the shell of the foldable electronic device; A shaft cover is disposed outside the rotating shaft of the foldable electronic device, and a side of the shaft cover away from the bottom shell and a side of the shaft cover facing the foldable electronic device have a risk area; A flexible layer, covering at least a portion of the surface of the shaft cover and connected to the bottom shell; Wherein, the flexible layer covers the risk area, and the shaft cover contacts the foldable electronic device through the flexible layer.

2. The protective case for a foldable electronic device according to claim 1, characterized in that: The flexible layer includes a first flexible layer and a second flexible layer, the first flexible layer covers the outer wall surface of the shaft cover, the second flexible layer covers the inner wall surface of the shaft cover, and at least one of the first flexible layer and the second flexible layer is connected to the bottom shell; The second flexible layer covers the risk area, and the shaft cover contacts the foldable electronic device through the second flexible layer.

3. The protective case for a foldable electronic device according to claim 2, characterized in that: The edge of one side of the shaft cover away from the bottom shell has an outer rounded corner, the edge of the risk zone is connected to the outer rounded corner, and the second flexible layer is connected to the outer rounded corner.

4. The protective case for a foldable electronic device according to claim 2, characterized in that: The outer wall surface of the shaft cover is provided with an outer mounting groove, and the first flexible layer is mounted in the outer mounting groove; An inner wall surface of the shaft cover is provided with an inner mounting groove, the inner mounting groove covers the risk area, and the second flexible layer is mounted in the inner mounting groove; Wherein, on a side of the shaft cover away from the bottom shell, the outer mounting groove and the inner mounting groove are spaced apart.

5. The protective case for a foldable electronic device according to any one of claims 2 to 4, characterized in that: The first flexible layer covers an outer surface of the bottom shell, and the second flexible layer covers at least a portion of an inner surface of the bottom shell.

6. The protective case for a foldable electronic device according to claim 5, characterized in that: A mounting groove is provided on one side of the inner surface of the bottom shell close to the shaft cover, the mounting groove is connected to the side wall of the bottom shell, and the second flexible layer is mounted in the mounting groove.

7. The protective case for a foldable electronic device according to claim 1, characterized in that: The flexible layer includes a first flexible layer, which covers the outer wall surface of the shaft cover and bypasses a side of the shaft cover away from the bottom shell and extends to the inner wall surface of the shaft cover, so that the first flexible layer at least covers the risk area.

8. The protective case for a foldable electronic device according to claim 7, characterized in that: An outer wall surface of the shaft cover is provided with an outer mounting groove, and an inner wall surface of the shaft cover is provided with an inner mounting groove, and the inner mounting groove covers the risk area; Wherein, on a side of the shaft cover away from the bottom shell, the outer mounting groove is connected to the inner mounting groove, and the first flexible layer is mounted in the outer mounting groove and the inner mounting groove.

9. The protective case for a foldable electronic device according to claim 7, characterized in that: The first flexible layer covers an outer surface of the bottom shell, and / or the first flexible layer covers at least a portion of an inner surface of the bottom shell.

10. The protective case for a foldable electronic device according to claim 7, characterized in that: The flexible layer further includes a second flexible layer, and the second flexible layer covers at least a portion of an inner surface of the bottom shell.

11. The protective case for a foldable electronic device according to claim 10, characterized in that: The second flexible layer extends to cover a portion of the inner wall surface of the shaft cover.

12. The protective case for a foldable electronic device according to claim 10 or 11, characterized in that: A mounting groove is provided on one side of the inner surface of the bottom shell close to the shaft cover, the mounting groove is connected to the side wall of the bottom shell, and the first flexible layer or the second flexible layer is mounted in the mounting groove.

13. The protective case of a foldable electronic device according to claim 2 or 11, characterized in that: The flexible layer is a PU leather layer.

14. The protective case for a foldable electronic device according to claim 13, characterized in that: At least one of the first flexible layer and the second flexible layer is a double-sided elastic PU leather layer.

15. The protective case for a foldable electronic device according to claim 14, characterized in that: The first flexible layer and the second flexible layer are both the double-sided elastic PU leather layer, and the elastic force direction of one of the first flexible layer and the second flexible layer is its width direction, and the elastic force direction of the other is its length direction.

16. The protective case for a foldable electronic device according to claim 14, characterized in that: One of the first flexible layer and the second flexible layer is a double-sided elastic PU leather layer, and the other is a four-sided elastic PU leather layer.

17. The protective case for a foldable electronic device according to claim 1, characterized in that: The flexible layer is an injection-molded layer integrally formed on the surface of the shaft cover.

18. The protective case for a foldable electronic device according to claim 1, characterized in that: At least one magnetic component is arranged in the shaft cover.

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