CN219437049U - Protective housing - Google Patents

Abstract

The embodiment of the utility model discloses a protective shell, which comprises a shell, a bracket component and a hanging rope component; the support assembly comprises a fixing piece and a supporting piece, the fixing piece is fixedly connected with the shell, the supporting piece is rotatably connected with the fixing piece, and the support assembly comprises a storage state; the hanging rope assembly comprises a hanging rope and a connecting piece, the hanging rope is connected with the connecting piece, the connecting piece is detachably connected with the shell or the fixing piece, and when the supporting piece is in the storage state, the supporting piece locks the connecting piece. According to the embodiment of the utility model, the hanging rope is mounted and dismounted through the mutual matching between the bracket component and the hanging rope component, so that the convenience of arranging the hanging rope on the protective shell is greatly improved.

Description

Protective housing

Technical Field

The utility model relates to the technical field of electronic equipment brackets, in particular to a protective shell.

Background

The hanging rope on the existing protective shell (such as a mobile phone and the like) is generally tied on the protective shell in a rope fastening mode, so that the disassembly is inconvenient; if the hanging rope is used, the corresponding hanging rope hole is arranged on the protective shell to connect the hanging rope, so that the installation and the disassembly are inconvenient, dust easily enters the protective shell through the hanging rope hole, and dust is easily accumulated in the protective shell; if the hanging rope is not used, the hanging rope cannot be used for hanging the hanging rope on a hand or a neck when a user does not have a pocket to store or is inconvenient to hold, and the use convenience is affected.

Disclosure of Invention

The utility model aims to provide a protective shell, and aims to solve the problems that in the prior art, a hanging rope fixing mode on the protective shell is inconvenient to install and detach, inconvenient to use and the like.

In order to solve the technical problems, the aim of the utility model is realized by the following technical scheme: providing a protective shell, comprising a shell, a bracket component and a hanging rope component; the support assembly comprises a fixing piece and a supporting piece, the fixing piece is fixedly connected with the shell, the supporting piece is rotatably connected with the fixing piece, and the support assembly comprises a storage state; the hanging rope assembly comprises a hanging rope and a connecting piece, the hanging rope is connected with the connecting piece, the connecting piece is detachably connected with the shell or the fixing piece, and when the supporting piece is in the storage state, the supporting piece locks the connecting piece;

further, the connecting piece comprises a hanging rope part and a first connecting part, wherein the hanging rope part is connected with the hanging rope, and the first connecting part is provided with a groove or a through hole; the fixing piece is provided with a containing part for containing the supporting piece, the supporting piece is provided with a first convex part, and when the first connecting part is positioned at the containing part and the supporting piece is in the containing state, the first convex part is inserted into the groove or the through hole to lock the connecting piece;

further, the connecting piece comprises a hanging rope part and a second connecting part, the hanging rope part is connected with the hanging rope, a first slot is formed in the fixing piece along the width direction of the fixing piece, the second connecting part is inserted into the first slot, and when the supporting piece is in the storage state, the supporting piece blocks the inlet of the first slot;

further, two sides of the second connecting portion are outwards protruded relative to two sides of the hanging rope portion to form extension blocks, limiting blocks are arranged on two sides of one end, far away from the inlet, of the first slot, and when the extension blocks are in contact with the limiting blocks, the second connecting portion and the fixing piece are relatively fixed in the inserting direction;

further, a second protruding portion is arranged on one side, facing the fixing piece, of the supporting piece, and when the supporting piece is in the storage state, the second protruding portion blocks an inlet of the first slot;

further, the connecting piece comprises a hanging rope part and a third connecting part, the hanging rope part is connected with the hanging rope, a protruding part is arranged on the third connecting part, a second slot arranged along the length direction of the fixing piece is arranged on the fixing piece, the protruding part is inserted into the second slot, and the connecting piece is fixed relative to the width direction of the bracket component;

further, a third protrusion is arranged on the support piece, and when the support piece is in the storage state, the third protrusion blocks the inlet of the second slot;

further, the connecting piece comprises a hanging rope part and a fourth connecting part, the hanging rope part is connected with the hanging rope, a bracket groove corresponding to the supporting piece is formed in the shell, a step part is formed in one end of the fourth connecting part, and a step groove corresponding to the step part is formed in the bracket groove; when the supporting piece is in the storage state, the supporting piece presses the step part;

further, a fourth convex part is arranged at the bottom of the step part, and a convex part groove is arranged in the step groove corresponding to the fourth convex part;

further, the connecting piece comprises a hanging rope part and a fifth connecting part, the hanging rope part is connected with the hanging rope, a bracket groove corresponding to the supporting piece is formed in the shell, a step part is formed in one end of the fifth connecting part, a step groove corresponding to the step part is formed in the bracket groove, a stress part is arranged on the side edge of the step part in an extending mode, and a stress groove corresponding to the stress part is formed in the bracket groove; when the supporting piece is in the storage state, the supporting piece presses the step part and the stress part.

The embodiment of the utility model provides a protective shell, which comprises a shell, a bracket component and a hanging rope component; the support assembly comprises a fixing piece and a supporting piece, the fixing piece is fixedly connected with the shell, the supporting piece is rotatably connected with the fixing piece, and the support assembly comprises a storage state; the hanging rope assembly comprises a hanging rope and a connecting piece, the hanging rope is connected with the connecting piece, the connecting piece is detachably connected with the shell or the fixing piece, and when the supporting piece is in the storage state, the supporting piece locks the connecting piece. According to the embodiment of the utility model, the hanging rope is mounted and dismounted through the mutual matching between the bracket component and the hanging rope component, so that the convenience of arranging the hanging rope on the protective shell is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a protective shell according to embodiment 1 of the present utility model;

fig. 2 is an exploded view of a protective casing according to embodiment 1 of the present utility model;

fig. 3 is a second explosion diagram of the protective housing according to embodiment 1 of the present utility model;

FIG. 4 is an enlarged view of A in FIG. 3;

fig. 5 is a schematic view of a first convex portion structure provided in embodiment 1 of the present utility model;

fig. 6 is an exploded view of a protective case according to embodiment 2 of the present utility model;

fig. 7 is an exploded view of a protective case according to embodiment 2 of the present utility model;

FIG. 8 is an exploded view of a bracket assembly according to embodiment 2 of the present utility model;

fig. 9 is a schematic diagram of a protective shell according to embodiment 3 of the present utility model;

fig. 10 is an exploded view of a protective case according to embodiment 3 of the present utility model;

fig. 11 is an exploded view of a protective case according to embodiment 3 of the present utility model;

FIG. 12 is a second exploded view of the bracket assembly according to embodiment 3 of the present utility model;

fig. 13 is a schematic diagram III of a protective housing structure according to embodiment 4 of the present utility model;

fig. 14 is an exploded view of a protective case according to embodiment 4 of the present utility model;

fig. 15 is an enlarged view of B in fig. 14;

fig. 16 is a schematic diagram of a connector structure according to embodiment 4 of the present utility model;

fig. 17 is a second schematic structural diagram of the connector according to embodiment 5 of the present utility model.

The figure identifies the description:

10. a housing; 11. a bracket groove; 111. a step groove; 1111. a convex portion groove; 12. a stress groove;

20. a bracket assembly; 21. a fixing member; 211. a housing part; 212. a first slot; 2121. a limiting block; 2122. a first insertion port; 213. a second slot; 2131. a second insertion port; 22. a support; 221. a first convex portion; 222. a second convex portion; 223. a third convex portion;

30. a hanging rope assembly; 31. a connecting piece; 311. a rope hanging part; 312. a first connection portion; 3121. a through hole; 313. a second connecting portion; 3131. an extension block; 314. a third connecting portion; 3141. a boss; 315. a step portion; 3151. a fourth convex portion; 316. rope hanging holes; 317. a fourth connecting portion; 318. a fifth connecting portion; 319. a force receiving part; 32. and (5) hanging ropes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1 to 3, the embodiment of the present utility model provides a protective case, which includes a case 10, a bracket assembly 20, and a string assembly 30; the stand assembly 20 includes a fixing member 21 and a supporting member 22, the fixing member 21 is fixedly connected with the housing 10, the supporting member 22 is rotatably connected with the fixing member 21, and the stand assembly 20 includes a storage state; the hanging rope assembly 30 includes a hanging rope 32 and a connecting member 31, the hanging rope 32 is connected with the connecting member 31, the connecting member 31 is detachably connected with the housing 10 or the fixing member 21, and the supporting member 22 locks the connecting member 31 when the supporting member 22 is in the storage state.

In the present embodiment, the fixing member 21 is provided on the housing 10 and the supporting member 22 is rotatable about the fixing member 21, and the connecting member 31 can be taken out from the housing 10 or the fixing member 21 when the stand assembly 20 is in the open state (i.e., the non-housed state); when the stand assembly 20 is in the closed state (i.e., the storage state), the connector 31 is in a locked state with the housing 10 or the fixing member 21, and cannot be removed (the locked connector 31 means that the connector 31 cannot be detached from the housing 10 or the fixing member 21). In general, the connection member 31 and the hanging rope 32 are connected in advance (the hanging rope hole 316 is provided in the connection member 31, the hanging rope 32 is connected to the hanging rope hole 316), and when the connection member 31 is taken out, the hanging rope 32 is taken out together. When the protective shell needs to use the hanging rope 32, the protective shell can be quickly installed, namely the bracket assembly 20 is rotated to an open state, the connecting piece 31 is arranged in the bracket assembly 20, and then the bracket assembly 20 is rotated to a closed state, so that locking can be completed; when the protective shell does not require the use of a hanging rope 32, the bracket assembly 20 can be opened to remove the connecting piece 31 from the hanging rope 32.

In addition, the bracket assembly 20 is generally disposed on the back of the housing 10, and the specific position is not limited, so long as the installation and the removal of the hanging rope assembly 30 can be realized; the support assembly 20 can also play a role in supporting the protective shell in an open state, namely, the protective shell is erected on a desktop, so that a user can conveniently use equipment installed in the protective shell. In a specific application scenario, the bracket component 20 may be disposed at one end of the housing 10 in the length direction or the width direction, and after the bracket component 20 is opened, the protective housing can be supported by the frame of the protective housing and the bracket component 20 together, so that the protective housing is supported on the desktop in a vertical screen or horizontal screen manner.

Further, the fixing member 21 is fixed to the housing 10, and can be understood as a bracket assembly base of the bracket assembly 20, which serves as a supporting function; the junction of support piece 22 and mounting 21 can set up the spring (like torsion spring) for more make things convenient for the rotation between support piece 22 and the mounting 21, the spring can provide certain elasticity for the junction of support piece 22 and mounting 21, also makes things convenient for simultaneously to make support piece 22 be difficult for rocking when the open state, thereby better support the protective housing and stand on the desktop.

As shown in fig. 4 and 5, in an embodiment, the connection member 31 includes a hanging rope portion 311 and a first connection portion 312, the hanging rope portion 311 is connected to the hanging rope 32, and the first connection portion 312 has a through hole 3121; the fixing member 21 has a receiving portion 211 for receiving the supporting member 22, the supporting member 22 has a first protrusion 221, and when the first connecting portion 312 is located in the receiving portion 211 and the supporting member 22 is in the receiving state, the first protrusion 221 is inserted into the through hole 3121 to lock the connecting member 31.

In this embodiment, after the connecting member 31 is inserted into the fixing member 21, the supporting member 22 is covered towards the fixing member 21, and the first protrusion 221 is just embedded into the through hole 3121 to lock the first connecting portion 312 (when the first connecting portion 312 is located in the accommodating portion 211), so as to achieve a stable state. Of course, the through hole 3121 may be replaced by a groove, and the engagement with the first protrusion 221 may be achieved. For the fixation between the support 22 and the fixing 21, a magnet may be provided to magnetically attract; the fixing member 21 may be provided with a locking position, and the supporting member 22 may be provided with locking buckles corresponding to each other in a matching manner, so that a slight force is applied when the supporting member 22 is opened or closed.

In this embodiment, the fixing member 21 is laterally disposed at one end of the rear surface of the housing 10 in the longitudinal direction, which is away from the camera mounting position, so as to have a sufficient space for mounting the fixing member 21. The surface of the fixing member 21 has a receiving portion 211 that can be used to receive the first connecting portion 312. In addition, in the connection member 31, the rope hanging hole 316 (located in the rope hanging portion 311) and the through hole 3121 (located in the first connection portion 312) are respectively located at two ends of the connection member 31, an opposite interface for inserting the connection member 31 may be provided on the fixing member 21, and when the rope hanging 32 is installed, the rope hanging 32 may be installed on the rope hanging hole 316 of the rope hanging portion 311, then one end of the first connection portion 312 provided with the through hole 3121 is inserted into the fixing member 21 from the opposite interface, and then the support member 22 is closed, so that the first protrusion 221 is just embedded into the through hole 3121, and the connection member 31 is locked. When unlocking is needed, the supporting piece 22 is only required to be opened, and then the connecting piece 31 is pulled out from the butt joint. Of course, in other application scenarios, the fixing members may be disposed at other positions, such as two ends in the width direction, or a middle portion of the back surface of the housing 10, and the like, and similarly, for the subsequent embodiments, the disposition position of the bracket assembly 20 may be adjusted as required.

Referring to fig. 6 to 8, in an embodiment, the connecting member 31 includes a hanging rope portion 311 and a second connecting portion 313, the hanging rope portion 311 is connected to the hanging rope 32, the fixing member 21 has a first slot 212 disposed along a width direction of the fixing member 21, the second connecting portion 313 is inserted into the first slot 212, and when the supporting member 22 is in the storage state, the supporting member 22 blocks an entrance of the first slot 212.

In the present embodiment, a rope hanging hole 316 is provided on the rope hanging portion 311, and the rope hanging 32 is connected to the rope hanging hole 316; after the second connecting portion 313 enters the first slot 212, the supporting member 22 is rotated and pressed downwards towards the fixing member, and the supporting member 22 just blocks the entrance of the first slot 212, so that the hanging rope 32 is prevented from falling off accidentally in the use process. For convenience of distinction, the entrance of the first slot 212 is identified herein as the first insertion port 2122, and the same applies below.

In an embodiment, two sides of the second connection portion 313 protrude outwards relative to two sides of the hanging rope portion 311 to form an extension block 3131, two sides of one end of the first slot 212 away from the inlet are provided with limiting blocks 2121, and when the extension block 3131 contacts with the limiting blocks 2121, the second connection portion 313 and the fixing piece 21 are relatively fixed in the insertion direction.

In the present embodiment, the extension block 3131 is provided in an arc shape, or may be provided in a square shape, which is not limited herein; it should be noted that, after the extension block 3131 enters the first slot 212 from the first insertion port 2122, it gradually approaches the stopper 2121 until the extension block 3131 abuts against the stopper 2121; the extension blocks 3131 are disposed on both sides of the second connection portion 313, and if only one side is disposed, the connection member 31 may be accidentally detached during use.

In an embodiment, a second protrusion 222 is disposed on a side of the support 22 facing the fixing member 21, and the second protrusion 222 blocks the entrance of the first slot 212 when the support 22 is in the storage state.

In this embodiment, the length of the second protruding portion 222 may be set to be the same as the length of the second connecting portion 313, or may be greater than or less than the length of the second connecting portion 313, so long as the second connecting portion 313 can be locked (i.e. the second protruding portion 222 blocks the entrance of the first slot 212).

Referring to fig. 9 to 12, in an embodiment, the connecting member 31 includes a hanging rope portion 311 and a third connecting portion 314, the hanging rope portion 311 is connected to the hanging rope 32, the third connecting portion 314 has a protrusion 3141 thereon, the fixing member 21 has a second slot 213 disposed along a length direction of the fixing member 21, the protrusion 3141 is inserted into the second slot 213, and the connecting member 31 is fixed with respect to a width direction of the bracket assembly 20.

In the present embodiment, a rope hanging hole 316 is provided on the rope hanging portion 311, and the rope hanging hole 316 is connected with the rope hanging 32; when the hanging rope 32 is needed to be used, the protruding part 3141 on the third connecting part 314 starts to slide in from the second inserting opening 2131 until the whole third connecting part 314 is positioned in the second inserting groove 213; the second slot 213 is configured as a "C" shaped slot in this embodiment, although other shapes, such as a square slot, are also possible.

In an embodiment, the support 22 is provided with a third protrusion 223, and when the support 22 is in the storage state, the third protrusion 223 blocks the entrance of the second slot 213.

In the present embodiment, the third protruding portion 223 is provided for blocking the third connecting portion 314, preventing the third connecting portion 314 from falling out of the second slot 213, and the third protruding portion 223 plays a role in fastening; since the second slot 213 is configured as a "C" slot, the second slot 213 is slightly protruded in the fixing member 21, so that the supporting member 22 cannot be well covered with the fixing member 21, and therefore, a hole needs to be hollowed out on the supporting member 22 corresponding to the second slot 213 to match the covering of the supporting member 22. A magnet may be provided at the junction of the third protruding portion 223 and the fixing member 21 to assist fastening, or the third protruding portion 223 may be provided closer to the second insertion port 2131, and may be slightly forced when opening or closing.

As shown in fig. 13 to 15, in an embodiment, the connecting member 31 includes a hanging rope portion 311 and a fourth connecting portion 317, the hanging rope portion 311 is connected with the hanging rope 32, a bracket groove 11 corresponding to the supporting member 22 is provided on the housing 10, a step portion 315 is provided at one end of the fourth connecting portion 317, and a step groove 111 corresponding to the step portion 315 is provided on the bracket groove 11; when the support 22 is in the storage state, the support 22 presses the step 315.

In the present embodiment, the bracket assembly 20 is embedded in the bracket groove 11 in a closed state; when the hanging rope 32 needs to be installed, the supporting piece 22 is opened, the step part 315 on the fourth connecting part 317 is correspondingly embedded into the step groove 111 arranged on the bracket groove 11, and at the moment, the supporting piece 22 is covered towards the bracket groove 11 (namely, the supporting piece 22 presses the step part 315), so that the installation of the connecting piece 31 is completed. When the hanging rope 32 needs to be detached, the connecting piece 31 and the hanging rope 32 can be easily taken out only by opening the supporting piece 22. Corresponding buckles or magnets can be arranged between the support piece 22 and the bracket groove 11 for fixing, so that the support piece 22 and the bracket groove 11 are prevented from being separated in the use process.

As shown in fig. 16, in an embodiment, the fourth protrusion 3151 is provided at the bottom of the step portion 315, and the protrusion groove 1111 is provided in the step groove 111 corresponding to the fourth protrusion 3151.

In this embodiment, in order to further stabilize the connection between the step portion 315 and the step groove 111, a fourth protrusion 3151 may be further provided at the bottom of the step portion 315, and a bump groove 1111 may be provided correspondingly in the step groove 111, so that the connection between the step portion 315 and the step groove 111 may be further stabilized.

Referring to fig. 17, in an embodiment, the connecting piece 31 includes a hanging rope portion 311 and a fifth connecting portion 318, the hanging rope portion 311 is connected with the hanging rope 32, a bracket groove 11 corresponding to the supporting piece 22 is provided on the housing 10, a step portion 315 is provided at one end of the fifth connecting portion 318, a step groove 315 corresponding to the step portion 315 is provided on the bracket groove 11, a stress portion 319 is provided on a side edge of the step portion 315 in an extending manner, and a stress groove 12 corresponding to the stress portion 319 is provided on the bracket groove 11; when the support 22 is in the storage state, the support 22 presses the step portion 315 and the force receiving portion 319.

In the present embodiment, the bracket assembly 20 is embedded in the bracket groove 11 in a closed state; when the hanging rope 32 needs to be installed, the supporting piece 22 is opened, the step part 315 on the fifth connecting part 318 is correspondingly embedded into the step groove 111 arranged on the bracket groove 11, the stress part 319 is correspondingly embedded into the stress groove 12, and at the moment, the supporting piece 22 is covered towards the bracket groove 11 (namely, the supporting piece 22 presses the step part 315 and the stress part 319), so that the installation of the connecting piece 31 is completed. When the hanging rope 32 needs to be detached, the connecting piece 31 and the hanging rope 32 can be easily taken out only by opening the supporting piece 22. Corresponding buckles or magnets can be arranged between the support piece 22 and the bracket groove 11 to fix, so that the support piece 22 and the bracket groove 11 are prevented from being separated in the use process. The force receiving portion 319 (fig. 17) is adopted to increase the force receiving area of the step portion 315, and the stability effect can be enhanced after the bracket assembly 20 is covered. Of course, other alternatives are possible to enhance the stabilizing effect.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. The protective shell is characterized by comprising a shell, a bracket component and a hanging rope component;

the support assembly comprises a fixing piece and a supporting piece, the fixing piece is fixedly connected with the shell, the supporting piece is rotatably connected with the fixing piece, and the support assembly comprises a storage state;

the hanging rope assembly comprises a hanging rope and a connecting piece, the hanging rope is connected with the connecting piece, the connecting piece is detachably connected with the shell or the fixing piece, and when the supporting piece is in the storage state, the supporting piece locks the connecting piece.

2. The protective case of claim 1, wherein the connection member includes a hanging string portion connected to the hanging string and a first connection portion having a groove or a through hole thereon;

the fixing piece is provided with a containing part for containing the supporting piece, the supporting piece is provided with a first protruding part, and the first protruding part is inserted into the groove or the through hole to lock the connecting piece when the first connecting part is positioned at the containing part and the supporting piece is in the containing state.

3. The protective case according to claim 1, wherein the connecting member includes a hanging rope portion and a second connecting portion, the hanging rope portion is connected with the hanging rope, the fixing member is provided with a first slot arranged along a width direction of the fixing member, the second connecting portion is inserted into the first slot, and the supporting member blocks an inlet of the first slot when the supporting member is in the storage state.

4. A protective case according to claim 3, wherein two sides of the second connecting portion protrude outwards relative to two sides of the hanging rope portion to form extension blocks, two sides of one end, away from the inlet, of the first slot are provided with limiting blocks, and when the extension blocks are in contact with the limiting blocks, the second connecting portion and the fixing piece are relatively fixed in the insertion direction.

5. The protective case according to claim 4, wherein a second protrusion is provided on a side of the support member facing the fixing member, the second protrusion blocking an entrance of the first slot when the support member is in the storage state.

6. The protective case of claim 1, wherein the connection member includes a hanging string portion and a third connection portion, the hanging string portion being connected to the hanging string, the third connection portion having a protrusion thereon, the fixing member having a second slot provided along a length direction of the fixing member, the protrusion being inserted into the second slot, the connection member being fixed with respect to a width direction of the bracket assembly.

7. The protective case of claim 6, wherein the support member is provided with a third protrusion, the third protrusion blocking an entrance of the second slot when the support member is in the storage state.

8. The protective case of claim 1, wherein the connecting member includes a hanging rope portion and a fourth connecting portion, the hanging rope portion is connected with the hanging rope, a bracket groove corresponding to the supporting member is provided on the case, a step portion is provided at one end of the fourth connecting portion, and a step groove corresponding to the step portion is provided on the bracket groove; when the supporting piece is in the storage state, the supporting piece presses the step part.

9. The protective case according to claim 8, wherein a fourth protrusion is provided at a bottom of the step portion, and a protrusion groove is provided in the step groove corresponding to the fourth protrusion.

10. The protective case according to claim 1, wherein the connecting piece comprises a hanging rope part and a fifth connecting part, the hanging rope part is connected with the hanging rope, a bracket groove corresponding to the supporting piece is arranged on the shell, a step part is arranged at one end of the fifth connecting part, a step groove corresponding to the step part is arranged on the bracket groove, a stress part is arranged on the side edge of the step part in an extending mode, and a stress groove corresponding to the stress part is arranged on the bracket groove; when the supporting piece is in the storage state, the supporting piece presses the step part and the stress part.