TW201700902A - Protection cover - Google Patents

Abstract

A protection cover includes a board, a foldable sheet and first, second, third, fourth, fifth, and sixth magnetic members. The foldable sheet includes a first foldable member having a first slidable portion and a first foldable portion and a second foldable member having a second slidable portion and a second foldable portion. The first and second slidable portions are slidably inserted into a rail slot of the board. The first and second magnetic members are respectively located on first and second axes parallel to the rail slot. The third and fourth magnetic members are disposed on the board and located on the first and second axes respectively. The fifth magnetic member is disposed on the first slidable portion corresponding to the first magnetic member. The sixth magnetic member is disposed on the second slidable portion corresponding to the second magnetic member.

Description

Protective cover

The invention relates to a protective cover, in particular to a protective cover for magnetically supporting the electronic device by magnetically positioning the magnetic support piece so that the foldable support piece bends against the joint plate.

In recent years, electronic devices (such as mobile phones, tablet computers, etc.) have been widely used in daily life, but since electronic devices are easily damaged by collision with foreign objects, in practical applications, electronic devices are often placed. The foldable protective cover protects the electronic device. In addition, the foldable protective cover usually has the function of a support frame, that is, the foldable protective cover can be used to receive the folded sleeve type of the electronic device by the bent design of the structure itself. Converted into a support frame type for supporting the electronic device, thereby allowing the user to place the electronic device on the carrying plane for subsequent operations. However, the conventional foldable protective cover usually only provides support for the electronic device in a single placement state, so it is still not convenient enough for the application of the support and lacks flexibility in use.

One of the objects of the present invention is to provide a protective cover for magnetically supporting the electronic device by magnetically positioning the magnetic member so that the foldable support piece is bent relative to the joint plate to solve the above problem.

According to an embodiment, the protective cover of the present invention comprises a joint plate, a foldable support piece, a first magnetic piece, a second magnetic piece, a third magnetic piece, a fourth magnetic piece, and a fifth a magnetic member, and a sixth magnetic member. The joint plate is detachably coupled to an electronic device and has a slide rail groove. The foldable support sheet includes a first foldable member and a second foldable member. The first foldable member has a first sliding piece portion and a first foldable piece portion, and the first sliding piece portion is slidably inserted into one of the first ends of the sliding rail groove. The second foldable member is bendably coupled to the first foldable member and has a second slide portion and a second foldable portion, the second slide portion being slidably inserted into the slide groove One of the second ends. The first magnetic member is disposed at a position corresponding to the first end of the joint plate and located on a first axis parallel to the slide groove. The second magnetic member is disposed at a position corresponding to the second end of the joint plate and located on a second axis parallel to the slide groove. The third magnetic member is disposed on the joint plate and located on the first axis. The fourth magnetic member is disposed on the joint plate and located on the second axis. The fifth magnetic member is disposed at a position corresponding to the first magnetic member to magnetize the first magnetic member or the third magnetic member. The sixth magnetic member is disposed at a position corresponding to the second magnetic member to magnetize the second magnetic member or the fourth magnetic member. When the fifth magnetic member magnetically attracts the first magnetic member and the sixth magnetic member magnetically attracts the second magnetic member, the foldable support sheet is flatly attached to the joint plate; when the first sliding portion is Moving along the rail groove to a position where the fifth magnetic member magnetically attracts the third magnetic member to bend the foldable support piece relative to the joint plate and the sixth magnetic member magnetically attracts the first In the case of two magnetic members, the first foldable member and one of the second foldable members are connected to the flange and the first side of the joint plate is perpendicular to the first side of the slide rail to abut on a bearing plane, so as to The bonding device is coupled to the electronic device and obliquely stands at a first center of gravity of the bearing plane to fall between the connecting flange and the first side. Moving the second sliding piece along the sliding groove to a position where the sixth magnetic member magnetically attracts the fourth magnetic member to bend the foldable supporting piece relative to the engaging plate and the fifth When the magnetic member magnetically attracts the first magnetic member, a supporting end of the connecting flange and the second side of the connecting plate parallel to the sliding rail groove jointly support the bearing plane, so as to The electronic device that is coupled to the joint plate is inclined to extend between the support end point and the second side edge at a second center of gravity position on the bearing plane.

In summary, the protective cover provided by the present invention adopts the magnetic attraction positioning design of the magnetic member, so that the foldable support piece can support the electronic device to be placed directly or horizontally on the bearing plane with respect to the bending protrusion of the joint plate. For the user to perform operations such as viewing images played by the electronic device, the flexibility and convenience of the protective cover on the operation of the supporting electronic device can be greatly improved.

The advantages and spirit of the present invention will be further understood from the following embodiments and the accompanying drawings.

Please refer to FIG. 1 , FIG. 2 , and FIG. 3 . FIG. 1 is a perspective view showing a protective cover 10 and an electronic device 12 according to an embodiment of the present invention. FIG. 2 is the first view. FIG. 3 is a schematic view showing the assembly of the protective casing 10 of the second embodiment. FIG. As shown in FIG. 1 , FIG. 2 , and FIG. 3 , the protective cover 10 includes a joint plate 14 , a foldable support piece 16 , a first magnetic piece 18 , a second magnetic piece 20 , and a first The three magnetic members 22, a fourth magnetic member 24, a fifth magnetic member 26, and a sixth magnetic member 28. The joint plate 14 is detachably coupled to an electronic device 12 (for example, a mobile phone, a tablet computer, etc.) and has a slide rail groove 15, wherein the joint plate 14 and the electronic device 12 are combined by a common plate joint design. For example, the four corners of the engaging plate 14 are engaged with the four corners of the electronic device 12 (but not limited thereto). The foldable support sheet 16 includes a first foldable member 30 and a second foldable member 32. The first foldable member 30 has a first sliding piece portion 34 and a first foldable piece portion 36. The first sliding piece portion 34 is slidably inserted into one of the first ends P ₁ of the sliding rail groove 15. The second foldable member 32 is bendably coupled to the first foldable member 30 and has a second slide portion 38 and a second foldable portion 40. The second slide portion 38 is slidably inserted into the slide One of the rail grooves 15 is in the second end P ₂ .

Herein, the magnetic member arrangement of the protective casing 10 will be described in detail. As can be seen from FIGS. 2 and 3, the first magnetic member 18 is disposed at the position of the joint plate 14 corresponding to the first end P ₁ of the rail groove 15. The first magnetic member 20 is disposed at a position corresponding to the second end P ₂ of the sliding rail groove 15 and is parallel to the sliding rail groove 15 at a first axis L ₁ parallel to the sliding rail groove 15 . On a second axis L ₂ , the third magnetic member 22 is disposed on the joint plate 14 and located on the first axis L ₁ , and the fourth magnetic member 24 is disposed on the joint plate 14 and located on the second axis L ₂ . The fifth magnetic member 26 is disposed at a position corresponding to the first magnetic member 18 of the first sliding piece portion 34 for magnetically holding the first magnetic member 18 or the third magnetic member 22, and the sixth magnetic member 28 is disposed at the second portion The sliding piece portion 38 corresponds to the position of the second magnetic member 20 for magnetically holding the second magnetic member 20 or the fourth magnetic member 24.

Further, in this embodiment, the fourth magnetic member 24 can be disposed on the one of the slide rail grooves 15 that is not perpendicular to the foldable support piece 16 along the second axis L ₂ relative to the second magnetic member 20. the position of the center axis L _c of the third magnetic member 22 may be disposed in line along a first axis position of the center axis L ₁ beyond the adapter plate 14 L _c of the magnetic member 18 opposite the first. In practical applications, the distance between the third magnetic member 22 and the central axis L _c may be greater than the distance between the fourth magnetic member 24 and the central axis L _c , but smaller than the distance between the second magnetic member 20 and the central axis L _c , thereby further The protective cover 10 ensures that the electronic device 12 can stand between the side of the joint plate 14 and the foldable support piece 16 when the electronic device 12 is obliquely supported at the center of gravity of the support plane, thereby effectively preventing the electronic device. The device 12 occurs by overturning the support center of gravity.

As for the magnetic design of the magnetic member of the protective cover 10, one of the first magnetic member 18 and the fifth magnetic member 26 is a magnet, and the other of the first magnetic member 18 and the fifth magnetic member 26 is a magnet. Or the magnetic material, and the third magnetic member 22 on the first axis L ₁ can be the same as the first magnetic member 18 as a magnet or a magnetic material, whereby the fifth magnetic member 26 moves to the corresponding first magnetic member 18 Or the effect of magnetic attraction when the position of the third magnetic member 22 is at the position. Similarly, one of the second magnetic member 20 and the sixth magnetic member 28 is a magnet, and the other of the second magnetic member 20 and the sixth magnetic member 28 is a magnet or a magnetic conductive material, and is located at the second axis L. the fourth magnetic member ₂₂₄ may be generated based upon the second magnetic member 20 with a magnet or a magnetically permeable material, so as to move sixth magnetic member 28 to a position corresponding to the second or the fourth magnetic member 20 of the magnetic member 24 The effect of magnetic positioning.

It should be noted that, in practical applications, the first magnetic member 18, the second magnetic member 20, the third magnetic member 22, the fourth magnetic member 24, the fifth magnetic member 26, and the sixth magnetic member 28 may each be a magnet. The first magnetic member 18, the third magnetic member 22, and the fifth magnetic member 26 are magnetically repelled from the second magnetic member 20, the fourth magnetic member 24, and the sixth magnetic member 28, thereby further avoiding erroneous operation by the user. (For example, by accidentally moving the fifth magnetic member 26 to the position corresponding to the fourth magnetic member 24), the occurrence of erroneous magnetic attraction of the magnetic member on the protective cover 10 occurs.

The following is a detailed description of the support and folding operation of the protective casing 10, please refer to FIG. 1 and FIG. 3 to FIG. 9; FIG. 4 is a perspective view of the protective casing 10 of FIG. 1 from another perspective. FIG. 5 is a rear view of the protective casing 10 of FIG. 3 when the fifth magnetic member 26 is moved to a position corresponding to the third magnetic member 22. FIG. 6 is a protective casing 10 of FIG. FIG. 7 is a schematic perspective view of the protective cover 10 of FIG. 1 when it is placed horizontally, and FIG. 8 is the protective cover 10 of FIG. 3 moved to the sixth magnetic member 28 to FIG. 9 is a side view of the protective casing 10 of FIG. 7 obliquely standing on the bearing plane 41, corresponding to the rear view of the position of the fourth magnetic member 24. When the user wants to bend the foldable support piece 16 of the protective cover 10 to directly position the electronic device 12, the user only needs to push the first slide piece 34 of the foldable support piece 16 along the slide groove 15 from the slide groove 15 The position as shown in FIG. 3 is moved to the position as shown in FIG. 5 so that the fifth magnetic member 26 magnetically attracts the third magnetic member 22, whereby the third magnetic member 26 magnetically attracts the third magnetic member. The second magnetic member 28 magnetically attracts the magnetic positioning of the second magnetic member 20, and the foldable support member 16 is configured to bend the protrusion relative to the joint plate 14, such that the first foldable member 30 and the second One of the foldable members 32 is connected to the flange 31 so as to be coextensive with the first side S _{1 of the} joint rail 14 perpendicular to the first side S _{1 of the} rail groove 15 to engage the electronic device 12 with the joint plate 14 It is inclined on the carrying plane 41 so that the electronic device 12 is placed in a straight state (as shown in Fig. 6) for the user to perform subsequent operations. More specifically, as shown in FIG. 6, through the third magnetic member 22 disposed at a position beyond the central axis 14 of the adapter plate _C L, and a third magnetic member 22 and the central axis L along a first _{axis. 1} L The distance _c is greater than the distance between the fourth magnetic member 24 and the central axis L _c but smaller than the distance between the second magnetic member 20 and the central axis L _c , and the angle θ between the first foldable member 30 and the joint plate 14 is Preferably, it is less than 90°, thereby ensuring that the electronic device 12 coupled to the joint plate 14 is inclined on the carrying plane 41. The first center of gravity position C ₁ may fall between the connecting flange 31 and the first side S ₁ . Thereby, the electronic device 12 can be firmly placed directly on the carrying plane 41.

On the other hand, when the user wants to bend the foldable support piece 16 of the protective cover 10 to lie on the electronic device 12, the user only needs to push the second slide piece 38 of the foldable support piece 16 along the slide. The rail groove 15 is moved from the position as shown in FIG. 3 to the position as shown in FIG. 8 so that the sixth magnetic member 28 magnetically attracts the fourth magnetic member 24, whereby the magnetic member 6 is magnetically attracted. The fourth magnetic member 24 is held and the fifth magnetic member 26 magnetically attracts the magnetic positioning of the first magnetic member 18. The foldable support sheet 16 is bendable with respect to the joint plate 14 (as shown in FIG. 9A, which is FIG. 9 is a schematic view of the protective casing 10 of the electronic device 12, such that the supporting end a of the connecting flange 31 and the engaging plate 14 are parallel to the second side of the sliding groove 15 The side S ₂ can be supported on the bearing plane 41 so that the electronic device 12 combined with the joint plate 14 is inclined on the carrying plane 41, so that the electronic device 12 is placed in a horizontal position (as shown in FIG. 9). For the user to follow up. In more detail, as shown in FIG. 9 , the fourth magnetic member 24 is disposed through the second magnetic member 20 along the second axis L ₂ without crossing the foldable support piece 16 perpendicular to the slide groove 15 . The design of the position of the central axis L _c protects the casing 10 to further ensure that the electronic device 12 coupled with the joint plate 14 is inclined on the carrying plane 41. The second center of gravity position C ₂ can fall on the support end point a and Between the second sides S ₂ such that the electronic device 12 can be stably placed across the carrying plane 41.

In addition, if the user wants to close the protective cover 10 and the electronic device 12 in the horizontal state as shown in FIG. 6 or in the horizontal position as shown in FIG. 9, the user only needs to push. The first sliding piece portion 34 or the second sliding piece portion 38 of the foldable support piece 16 is moved back along the slide rail groove 15 to the position shown in FIG. 3 so that the fifth magnetic piece 26 magnetically attracts the first The magnetic member 18 and the sixth magnetic member 28 magnetically attract the second magnetic member 20 such that the foldable support sheet 16 is flatly attached to the joint plate 14 (as shown in FIG. 3), thereby completing the electronic device 12 and the protective cover 10. The fold is folded so that the user can carry it with him.

It is to be noted that, as shown in FIG. 2, in this embodiment, the protective cover 10 may further include at least a seventh magnetic member 42 and at least an eighth magnetic member 44 (three are shown in FIG. 2 respectively). The fourth magnetic member 44 is disposed on the foldable support piece 16 , and the eighth magnetic member 44 is disposed on the position of the joint plate 14 corresponding to the seventh magnetic member 42 . The eighth magnetic member 44 is disposed at a position corresponding to the seventh magnetic member 42 . And magnetically repelling the seventh magnetic member 42 such that the first foldable member 30 and the second foldable member 32 can have a tendency to bend the protrusion relative to the joint plate 14, thereby facilitating the user to more easily push the first The foldable member 30 and the second foldable member 32 are relatively bent to enhance the operational convenience of the protective cover 10.

In addition, referring to FIG. 10, FIG. 11 and FIG. 12, FIG. 10 is a first slide piece portion 34 and a second slide piece portion 38 of FIG. 3 are disposed on a limit rail piece 46. A schematic view on one of the stepped slide rails 48, and FIG. 11 is a schematic view of the first slide piece portion 34 of FIG. 10 sliding on the stepped slide rail 48 to a third stepped section 54, 12th 10 is a schematic view of the second sliding piece portion 38 sliding on the stepped slide rail 48 to the third stepped section 54, wherein the first sliding piece portion 34 and the second sliding piece portion 38 are at the 10th. In the figures 11 and 12, only a partial structure is shown. As shown in FIG. 10, FIG. 11 and FIG. 12, in practice, the protective casing 10 may further include a limiting rail piece 46, and the limiting rail piece 46 is slidably disposed on the joint plate 14. And a stepped slide rail 48 is formed between the foldable support sheets 16 , and the stepped slide rail 48 has a first step section 50 corresponding to the first end P ₁ of the slide rail groove 15 and corresponding to the slide rail groove 15 A second stepped section 52 of the second end P ₂ and a third stepped section 54 connected between the first stepped section 50 and the second stepped section 52. Embodiment, to be moved up and down with the engaging plate 14, the slide stopper 15 along the first slide rail groove portion 34 and the second slide portion 38 in the direction of the axis L ₁ of the first embodiment with respect thereto The sheet 46 is slidable to the left and right with respect to the joint plate 14, whereby when the user pushes the first slide portion 34 to slide along the slide groove 15 from the first step section 50 to the third step section 54, as in the first As shown in FIG. 11, the limit rail piece 46 is slidable relative to the engagement plate 14 as the first slide piece 34 slides to bias the second step section 52 to the second slide piece 38. The position is to ensure that the second slider portion 38 does not slide relative to the engagement plate 14 during the user's pushing of the first slider portion 34, resulting in erroneous operation, thereby producing a foolproof effect. On the other hand, when the user pushes the second slider portion 38 to slide along the rail groove 15 from the second step section 52 to the third step section 54, as shown in FIG. 12, the limit rail piece 46 The sliding of the second sliding piece 38 relative to the engaging plate 14 may be offset to a position that biases the first stepped section 50 to the position of the first sliding piece 34 to ensure that the first sliding piece 34 is The period during which the user pushes the second sliding piece portion 38 does not slide relative to the engaging plate 14 to cause an erroneous operation, thereby producing a foolproof effect.

In summary, compared with the prior art, the protective cover provided by the present invention adopts a magnetic member magnetic positioning design, so that the foldable support piece can bend the protrusion relative to the joint plate to support the electronic device or It is placed on the carrying plane for the user to perform operations such as viewing images played by the electronic device, so that the flexibility and convenience of the protective cover on the operation of the supporting electronic device can be greatly improved. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

10‧‧‧ protective casing
12‧‧‧Electronic devices
13‧‧‧ Corner card slot
14‧‧‧ joint plate
15‧‧‧Sliding track
16‧‧‧Foldable support piece
18‧‧‧First magnetic parts
20‧‧‧Second magnetic parts
22‧‧‧ Third magnetic parts
24‧‧‧4th magnetic piece
26‧‧‧ Fifth magnetic piece
28‧‧‧ sixth magnetic piece
30‧‧‧First foldable member
31‧‧‧Connection Folding
32‧‧‧Second foldable member
34‧‧‧First sliding part
36‧‧‧The first foldable part
38‧‧‧Second slide
40‧‧‧Second foldable parts
41‧‧‧bearing plane
42‧‧‧The seventh magnetic piece
44‧‧‧8th magnetic piece
46‧‧‧Limited rails
48‧‧‧step rails
50‧‧‧First step section
52‧‧‧second step section
54‧‧‧ third step section
P ₁ ‧‧‧ first end
P ₂ ‧‧‧ second end
L ₁ ‧‧‧first axis
L ₂ ‧‧‧second axis
L _C ‧‧‧ center axis
S ₁ ‧‧‧ first side
S ₂ ‧‧‧ second side
C ₁ ‧‧‧First center of gravity
C ₂ ‧‧‧Second center of gravity position θ‧‧‧ angle
a‧‧‧Support endpoint

1 is a perspective view showing a combination of a protective cover and an electronic device according to an embodiment of the present invention. Figure 2 is a schematic view of the component disassembly of the protective casing of Figure 1. Figure 3 is a schematic view showing the assembly of the protective casing of Figure 2. Figure 4 is a perspective view of the protective cover of Figure 1 in another perspective. Fig. 5 is a rear view of the protective cover of Fig. 3 when the fifth magnetic member is moved to a position corresponding to the third magnetic member. Fig. 6 is a side elevational view showing the protective casing of Fig. 1 obliquely standing on the carrying plane. Fig. 7 is a perspective view showing the protective casing of Fig. 1 when it is placed horizontally. Figure 8 is a rear view of the protective casing of Figure 3 when the sixth magnetic member is moved to a position corresponding to the fourth magnetic member. Figure 9 is a side elevational view of the protective casing of Figure 7 obliquely standing on the carrying plane. Figure 9A is a schematic top view of the protective casing incorporating the electronic device of Figure 9. Fig. 10 is a schematic view showing the first sliding piece portion and the second sliding piece portion of Fig. 3 being disposed on the stepped slide rail of the limit rail piece. Fig. 11 is a schematic view showing the sliding portion of the first sliding piece on the stepped slide rail to the third stepped section in Fig. 10. Fig. 12 is a schematic view showing the sliding portion of the second sliding piece of Fig. 10 on the stepped slide rail to the third stepped section.

10‧‧‧ protective casing

14‧‧‧ joint plate

15‧‧‧Sliding track

16‧‧‧Foldable support piece

18‧‧‧First magnetic parts

20‧‧‧Second magnetic parts

22‧‧‧ Third magnetic parts

24‧‧‧4th magnetic piece

26‧‧‧ Fifth magnetic piece

28‧‧‧ sixth magnetic piece

30‧‧‧First foldable member

31‧‧‧Connection Folding

32‧‧‧Second foldable member

34‧‧‧First sliding part

36‧‧‧The first foldable part

38‧‧‧Second slide

40‧‧‧Second foldable parts

42‧‧‧The seventh magnetic piece

44‧‧‧8th magnetic piece

P ₁ ‧‧‧ first end

P ₂ ‧‧‧ second end

L ₁ ‧‧‧first axis

L ₂ ‧‧‧second axis

L _C ‧‧‧ center axis

S ₁ ‧‧‧ first side

S ₂ ‧‧‧ second side

a‧‧‧Support endpoint

Claims (9)

A protective cover comprising: a joint plate detachably coupled to an electronic device and having a slide groove; a foldable support piece comprising: a first foldable member having a first a sliding piece portion and a first foldable piece portion slidably inserted into one of the first ends of the sliding rail groove; and a second foldable member connectable to the first folding piece a first foldable member having a second slide portion and a second foldable portion, the second slide portion being slidably inserted into the second end of the slide groove; a first magnetic member Provided at a position corresponding to the first end of the joint plate and located on a first axis parallel to the slide groove; a second magnetic member disposed on the joint plate corresponding to the slide rail a second end of the slot is located on a second axis parallel to the rail slot; a third magnetic member disposed on the joint plate and located on the first axis; a fourth magnetic member Disposed on the joint plate and located on the second axis; a fifth magnetic member disposed on the first a position corresponding to the first magnetic member for magnetically holding the first magnetic member or the third magnetic member; and a sixth magnetic member disposed at the second sliding portion corresponding to the second portion Positioning the magnetic member for magnetically holding the second magnetic member or the fourth magnetic member; wherein, when the fifth magnetic member magnetically attracts the first magnetic member and the sixth magnetic member magnetically attracts the first In the case of two magnetic members, the foldable support piece is flatly attached to the joint plate; and when the first slide piece moves along the slide groove to a position where the fifth magnetic member magnetically attracts the third magnetic member When the foldable support piece is bent relative to the joint plate and the sixth magnetic piece magnetically attracts the second magnetic piece, one of the first foldable member and the second foldable member is connected to the fold and the The first side of the rail plate is perpendicular to the first side of the rail groove to abut on a bearing plane, so that the electronic device coupled with the joint plate is inclined at a first center of gravity position on the bearing plane to fall on the connection Between the folded edge and the first side edge; when the second sliding piece portion moves along the sliding track groove to enable the first The magnetic member of the six magnetic members magnetically attracts the position of the fourth magnetic member such that the foldable support sheet is bent relative to the joint plate and the fifth magnetic member magnetically attracts the first magnetic member The support end is parallel to the second side of the rail slot and the second side of the rail slot is supported on the bearing plane, so that the electronic device combined with the joint plate is obliquely standing on the bearing plane. The center of gravity position falls between the support end point and the second side edge. The protective cover of claim 1, further comprising: a limiting rail piece slidably disposed between the joint plate and the foldable support piece and forming a stepped slide rail, the step The slide rail has a first stepped section corresponding to the first end of the slide rail slot, a second stepped section corresponding to the second end of the slide rail slot, and is coupled to the first stepped section and the first a third stepped section between the two stepped sections, the first sliding piece portion and the second sliding piece portion being slidably disposed on the stepped sliding rail; wherein, when the first sliding piece portion is along When the rail groove slides from the first step section to the third step section, the limit rail piece slides relative to the joint plate with the sliding of the first sliding piece to offset the second The stepped section biases the position of the second sliding piece; when the second sliding piece slides along the sliding groove from the second stepped section to the third stepped section, the limit The rail piece slides relative to the joint plate with the sliding of the second sliding piece to bias the first stepped section Bit position of the live portion of the first slide. The protective cover of claim 1, wherein the fourth magnetic member is disposed at a position opposite to a central axis of the foldable support piece along the second axis relative to the second magnetic member, the third The magnetic member is disposed at a position relative to the first magnetic member along the first axis across the central axis of the joint plate, the central axis being perpendicular to the slide rail groove. The protective casing of claim 3, wherein the distance between the third magnetic member and the central axis is greater than a distance between the fourth magnetic member and the central axis, but smaller than the second magnetic member and the central axis a distance. The protective cover of claim 3, wherein the first sliding piece moves along the sliding groove to a position where the fifth magnetic member magnetically attracts the third magnetic member and the sixth magnetic member is magnetic When the second magnetic member is attracted, the angle between the first foldable member and the joint plate is less than 90°. The protective cover of claim 1, further comprising: a seventh magnetic member disposed on the foldable support sheet; and an eighth magnetic member disposed on the joint plate corresponding to the seventh magnetic member In the position, the eighth magnetic member and the seventh magnetic member are magnetically repelled, so that the first foldable member and the second foldable member have a tendency to bend the protrusion relative to the joint plate. The protective cover of claim 1, wherein one of the first magnetic member and the fifth magnetic member is a magnet, and the other of the first magnetic member and the fifth magnetic member is a magnet Or a magnetic material. The protective cover of claim 1, wherein one of the second magnetic member and the sixth magnetic member is a magnet, and the other of the second magnetic member and the sixth magnetic member is a magnet Or a magnetic material. The protective cover of claim 1, wherein the first magnetic member, the second magnetic member, the third magnetic member, the fourth magnetic member, the fifth magnetic member, and the sixth magnetic member are each The magnet, the first magnetic member, the third magnetic member and the fifth magnetic member are magnetically repelled from the second magnetic member, the fourth magnetic member and the sixth magnetic member.