Protective shell

Abstract

The utility model relates to the technical field of electronic equipment accessories, in particular to a protective shell. Comprising a shell, a rotating assembly and a support, and a containing cavity with an opening is formed in the shell; the rotating assembly is arranged on the side wall, away from the opening, of the shell. The support is arranged on one side of the rotating assembly and located outside the shell, and the rotating assembly is used for driving the support to rotate in the circumferential direction of the shell. An elastic clamping assembly is arranged on the support, a mounting shaft is fixedly arranged on the rotating assembly, the mounting shaft is sleeved with the elastic clamping assembly, the elastic clamping assembly can rotate on the mounting shaft so as to adjust the opening degree of the support on the outer wall of the shell, and when the opening degree is at any angle, the elastic clamping assembly is in interference fit with the mounting shaft. By means of the arrangement, when a user needs to adjust the opening degree of the support according to the actual use environment, the support can stably support the shell, and the use experience feeling of the user is improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic device accessories technology, and in particular to a protective case. Background Technology

[0002] To protect electronic devices, users typically use protective cases to extend their lifespan. With the continuous development of short videos, users' demands for the performance of these protective cases are also increasing. By incorporating stands into the protective cases, users can support their electronic devices horizontally or vertically for video viewing.

[0003] Currently, protective cases with stands have a fixed opening angle when supporting electronic devices horizontally or vertically. When users need to adjust the opening angle of the stands according to the actual usage environment, the stands cannot be stably supported, affecting the user experience. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a protective shell to solve the problem in the prior art that when the user needs to adjust the opening degree of the bracket according to the actual use environment, the bracket cannot be stably supported, which affects the user's user experience.

[0005] This utility model discloses a protective shell, including a shell, a rotating assembly, and a bracket. The shell forms a receiving cavity with an opening. The rotating assembly is disposed on the side wall of the shell away from the opening. The bracket is disposed on one side of the rotating assembly and located outside the shell. The rotating assembly is used to drive the bracket to rotate circumferentially on the shell. An elastic retaining assembly is provided on the bracket. A mounting shaft is fixedly disposed on the rotating assembly. The elastic retaining assembly is sleeved on the mounting shaft. The elastic retaining assembly can rotate on the mounting shaft to adjust the opening degree of the bracket on the outer wall of the shell. When the opening degree is at any angle, the elastic retaining assembly is in an interference fit with the mounting shaft.

[0006] Optionally, a receiving groove is formed on the housing along the length direction of the housing, and the receiving groove extends to the bottom of the housing, the receiving groove being used to receive the bracket.

[0007] Optionally, the opening degree of the bracket on the outer wall of the housing is θ, and the value of θ is in the range of 0°≤θ≤110°. When the opening degree θ is 110°, the bracket can abut against the rotating assembly.

[0008] Optionally, the elastic retaining assembly includes a connecting plate and an elastic sleeve that are connected to each other. The connecting plate is connected to the bracket, and a notch is formed between the elastic sleeve and the connecting plate. The elastic sleeve is sleeved on the mounting shaft. The cross-section of the contact surface between the elastic sleeve and the mounting shaft is a non-circular cross-section, and the cross-section of the contact surface between the mounting shaft and the elastic sleeve is also a non-circular cross-section.

[0009] Optionally, the rotating assembly includes an annular mounting plate, a rotating plate, and a positioning plate; a first annular mounting groove is formed inside the housing, the first annular mounting groove is connected to the receiving cavity, and a plurality of snap-fit ​​parts are spaced apart on the side of the first annular mounting groove near its inner ring; a plurality of snap-fit ​​interfaces are formed on the inner ring of the annular mounting plate; the annular mounting plate is disposed in the first annular mounting groove, and the snap-fit ​​parts and snap-fit ​​interfaces are correspondingly engaged; the positioning plate is located in the first annular mounting groove, and a portion of the rotating plate passes through the first annular mounting plate and is fixedly connected to the positioning plate; a positioning protrusion is provided on the side of the positioning plate near the annular mounting plate, and a plurality of positioning holes are formed on the annular mounting plate; the positioning protrusion rotates with the rotating plate and can be engaged into each of the positioning holes, so that the rotating plate is fixed on the annular mounting plate; the mounting shaft is disposed on the side of the rotating plate opposite to the annular mounting plate.

[0010] Optionally, a second annular mounting groove is formed on the outer wall of the housing. The rotating disk includes a first rotating part and a second rotating part connected to each other. The second rotating part is rotatably disposed in the second annular mounting groove. The first rotating part passes through the inner ring of the annular mounting disk and is connected to the positioning disk. A second mounting groove is formed on the first rotating part and the second rotating part. The mounting shaft is disposed in the second mounting groove. The second annular mounting groove communicates with the receiving groove. When the opening degree θ is 110°, the bracket abuts against the second rotating part.

[0011] Optionally, a positioning shaft is provided on the side of the first rotating part near the positioning disk, and a mounting hole is formed on the positioning disk, the mounting hole being fitted onto the positioning shaft.

[0012] Optionally, two positioning convex balls are provided, located at both ends of the positioning disk along the radial direction of the positioning disk.

[0013] Optionally, the outer ring of the annular mounting disc is further provided with a plurality of mounting protrusions, which are embedded in the housing.

[0014] Optionally, the end of the bracket opposite to the mounting shaft has an arc-shaped bend, and when the arc-shaped bend is located within the receiving groove, the outer edge of the bracket is flush with the outer edge of the housing. Optionally,

[0015] Compared with the prior art, the beneficial effects of the protective shell provided by this utility model embodiment are as follows: When the protective shell of this embodiment is applied to an electronic device, the open side is fitted onto the electronic device so that the electronic device is located in the receiving cavity. Then, the user can operate the bracket according to the usage needs, so that the bracket drives the elastic clamping component to rotate on the mounting shaft, thereby adjusting the opening degree of the bracket on the outer wall of the shell, so that the bracket can support the shell according to the user's actual needs. At the same time, when the opening degree of the bracket on the outer wall of the shell is set to any angle, the elastic clamping component is always interference-fitted with the mounting shaft, which can ensure the stable support of the bracket on the shell at any position. Therefore, when the user adjusts the opening angle of the bracket according to the actual viewing needs, the stable support of the bracket on the shell can be guaranteed for the user to watch videos. Furthermore, under the action of the rotating component, the bracket is driven to rotate in the circumferential direction of the shell, so that the bracket can support the shell in the horizontal or vertical direction, thereby placing the electronic device in the horizontal or vertical screen state for the user to watch videos. With the above settings, the bracket can provide stable support for the shell when the user needs to adjust the opening degree of the bracket according to the actual use environment, thus improving the user experience. Attached Figure Description

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0017] Figure 1 This is one of the overall structural schematic diagrams of the protective shell provided in this embodiment of the utility model;

[0018] Figure 2 This is the second schematic diagram of the overall structure of the protective shell provided in this embodiment of the utility model;

[0019] Figure 3 This is one of the structural schematic diagrams of the shell provided in the embodiment of this utility model;

[0020] Figure 4 This is the second structural schematic diagram of the shell provided in this embodiment of the utility model;

[0021] Figure 5 yes Figure 3 Enlarged view of a portion of position A in the middle;

[0022] Figure 6 This is one of the schematic diagrams of the connection structure between the bracket and the elastic clamping assembly provided in this embodiment of the utility model;

[0023] Figure 7 This is the second schematic diagram of the connection structure between the bracket and the elastic clamping assembly provided in this embodiment of the utility model;

[0024] Figure 8 yes Figure 7 Enlarged view of a portion of position B in the middle;

[0025] Figure 9 This is one of the exploded structural diagrams of the rotating assembly provided in this embodiment of the utility model;

[0026] Figure 10 This is the second exploded structural diagram of the rotating assembly provided in this embodiment of the present invention;

[0027] Figure 11 This is a schematic diagram of the structure of the elastic sleeve provided in an embodiment of the present utility model;

[0028] Figure 12 This is a schematic diagram of the mounting shaft provided in an embodiment of the present invention.

[0029] The labels for the attached figures are as follows:

[0030] 10. Housing; 101. Receiving cavity; 102. Receiving groove; 103. First annular mounting groove; 111. Snap-fit ​​part; 104. Second annular mounting groove; 20. Rotating assembly; 210. Annular mounting plate; 2101. Snap-fit ​​interface; 2102. Positioning hole; 211. Mounting protrusion; 220. Rotating plate; 221. First rotating part; 2211. Positioning shaft; 222. Second rotating part; 2201. Second mounting groove; 230. Positioning plate; 2 31. Positioning convex ball; 30. Bracket; 310. Elastic clamping assembly; 311. Connecting plate; 312. Elastic sleeve part; 313. Notch; 31. Arc-shaped bending part; 301. First arc surface; 302. First upper plane; 303. Second arc surface; 304. First lower plane; 305. Third arc surface; 40. Mounting shaft; 401. Fourth arc surface; 402. Second upper plane; 403. Fifth arc surface; 404. Second lower plane; 70. Fastener. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] This utility model embodiment provides a protective shell, such as Figures 1 to 3As shown, the device includes a housing 10, a rotating assembly 20, and a bracket 30. The housing 10 forms a receiving cavity 101 with an opening. The rotating assembly 20 is disposed on the side wall of the housing 10 away from the opening. The bracket 30 is disposed on one side of the rotating assembly 20 and located outside the housing 10. The rotating assembly 20 is used to drive the bracket 30 to rotate in the circumferential direction of the housing 10. An elastic retaining assembly 310 is provided on the bracket 30. A mounting shaft 40 is fixedly provided on the rotating assembly 20. The elastic retaining assembly 310 is sleeved on the mounting shaft 40 and can rotate on the mounting shaft 40 to adjust the opening degree of the bracket 30 on the outer wall of the housing 10. When the opening degree is at any angle, the elastic retaining assembly 310 and the mounting shaft 40 are in an interference fit.

[0033] When the protective case of this embodiment is applied to an electronic device, the open side is fitted onto the electronic device so that the electronic device is located inside the receiving cavity 101. Then, the user can operate the bracket 30 according to the usage requirements, so that the bracket 30 drives the elastic holding component 310 to rotate on the mounting shaft 40, thereby adjusting the opening degree of the bracket 30 on the outer wall of the housing 10, so that the bracket 30 can support the housing 10 according to the user's actual needs. At the same time, when the opening degree of the bracket 30 on the outer wall of the housing 10 is set at any angle, the elastic holding component 310 is always in an interference fit with the mounting shaft 40, which can ensure the stable support of the bracket 30 on the housing 10 at any position. Thus, when the user adjusts the opening angle of the bracket 30 according to the actual viewing needs, the stable support of the bracket 30 on the housing 10 can be guaranteed for the user to watch videos. Furthermore, the rotating component 20 drives the bracket 30 to rotate circumferentially around the housing 10, enabling the bracket 30 to support the housing 10 horizontally or vertically, thus placing the electronic device in either landscape or portrait mode for user video viewing. With these features, the bracket 30 can stably support the housing 10 whenever the user needs to adjust its opening angle according to the actual usage environment, enhancing the user experience.

[0034] The accompanying drawings in this embodiment provide an example of a protective case being used on a mobile phone.

[0035] As a preferred embodiment, refer to Figure 1 and Figure 2 Along the length of the housing 10, a receiving groove 102 is formed on the housing 10, and the receiving groove 102 extends to the bottom of the housing 10. The receiving groove 102 is used to store the bracket 30.

[0036] When the bracket 30 on the protective case is not in use, it is retracted into the receiving groove 102 provided in the housing 10 so that the opening between the bracket 30 and the housing 10 is zero. At this time, the protective case only serves to protect the electronic device and improve the user experience. At the same time, in actual application, a camera avoidance hole is also formed on the top of the housing 10, extending the receiving groove 102 to the bottom of the housing 10. This ensures the setting length of the bracket 30. When the bracket 30 is used for support, especially when the electronic device is in portrait mode, it can work with the housing 10 to provide a stable support effect for the electronic device.

[0037] As a preferred embodiment, refer to Figure 1 The bracket 30 has an opening degree of θ on the outer wall of the housing 10. The value of θ is in the range of 0°≤θ≤110°. When the opening degree θ is 110°, the bracket 30 can abut against the rotating component 20.

[0038] The opening angle θ can be adjusted arbitrarily within the above range to adapt to different user needs. When the opening angle θ is 110°, the bracket 30 can abut against the rotating component 20, thereby further improving the relative stability between the bracket 30 and the housing 10, enhancing the support stability of the bracket 30 on the housing 10, and thus improving the user's user experience.

[0039] As a preferred embodiment, refer to Figures 6 to 8 The elastic retaining assembly 310 includes a connecting plate 311 and an elastic sleeve 312 connected to each other. The connecting plate 311 is connected to the bracket 30. A notch 313 is formed between the elastic sleeve 312 and the connecting plate 311. The elastic sleeve 312 is sleeved on the mounting shaft 40. The cross-section of the contact surface between the elastic sleeve 312 and the mounting shaft 40 is a non-circular cross-section. The cross-section of the contact surface between the mounting shaft 40 and the elastic sleeve 312 is also a non-circular cross-section.

[0040] The elastic retaining component 310 includes a connecting plate 311 and an elastic sleeve 312 that are interconnected. The connecting plate 311 is used to connect with the bracket 30. Specifically, the connecting plate 311 can be connected to the bracket 30 by means of a fastener 70, which improves the connection stability between the two. The fastener 70 can be a screw or rivet. A notch 313 is formed between the elastic sleeve 312 and the connecting plate 311. On the one hand, it is convenient to fit the elastic sleeve 312 onto the mounting shaft 40 through the notch 313. On the other hand, the notch 313 makes it convenient for the elastic sleeve 312 to undergo elastic deformation and rotate on the mounting shaft 40. After rotation, it is retained on the mounting shaft 40 and has an interference fit with the mounting shaft 40, thereby ensuring the support stability of the bracket 30 when the opening degree of the bracket 30 is at any angle, thus ensuring the user's use effect and user experience.

[0041] Furthermore, in this embodiment, when the elastic retaining components 310 are all in an interference fit with the mounting shaft 40, this is achieved by setting the cross-section of the contact surface between the elastic sleeve portion 312 and the mounting shaft 40 to be a non-circular cross-section, and the cross-section of the contact surface between the mounting shaft 40 and the elastic sleeve portion 312 to be a non-circular cross-section.

[0042] More specifically, refer to Figure 11 and Figure 12 The inner ring of the elastic sleeve portion 312 includes a first arc surface 301, a first upper plane 302, a second arc surface 303, a first lower plane 304, and a third arc surface 305 connected in sequence, with the first arc surface 301 and the third arc surface 305 located on both sides of the notch 313; the outer periphery of the mounting shaft 40 includes a fourth arc surface 401, a second upper plane 402, a fifth arc surface 403, and a second lower plane 404 connected in sequence, as shown in the figure. Figure 8 When the bracket 30 is located in the receiving groove 102, the first upper plane 302 and the second upper plane 402 are located on different planes, and the first lower plane 304 and the second lower plane 404 are located on different planes.

[0043] As a preferred embodiment, refer to Figures 1 to 3 , Figure 5 , Figure 9 and Figure 10The rotating assembly 20 includes an annular mounting plate 210, a rotating plate 220, and a positioning plate 230. A first annular mounting groove 103 is formed within the housing 10, communicating with the receiving cavity 101. Multiple engaging portions 111 are spaced apart on the side of the first annular mounting groove 103 near its inner ring. Multiple engaging interfaces 2101 are formed on the inner ring of the annular mounting plate 210. The annular mounting plate 210 is located within the first annular mounting groove 103, and the engaging portions 111 and engaging interfaces 2101 are engaged one-to-one. The positioning plate 230... Located within the first annular mounting groove 103, a portion of the rotating disk 220 passes through the first annular mounting disk 210 and is fixedly connected to the positioning disk 230; a positioning protrusion 231 is provided on the side of the positioning disk 230 near the annular mounting disk 210, and multiple positioning holes 2102 are formed on the annular mounting disk 210. The positioning protrusion 231 rotates with the rotating disk 220 and can be inserted into each positioning hole 2102, so that the rotating disk 220 is fixed on the annular mounting disk 210; the mounting shaft 40 is located on the side of the rotating disk 220 away from the annular mounting disk 210.

[0044] When the rotating component 20 is mounted on the housing 10, a first annular mounting groove 103 communicating with the receiving cavity 101 is formed inside the housing 10. The annular mounting plate 210 of the rotating component 20 is placed in the first annular mounting groove 103, and the locking interface 2101 provided on the inner ring of the annular mounting plate 210 is locked one-to-one with the locking parts 111 provided at intervals on the side of the first annular mounting groove 103 near its inner ring, thereby fixing the annular mounting plate 210 of the rotating component 20 in the first annular mounting groove 103. At the same time, the positioning plate 230 of the rotating component 20 is also located in the first annular mounting groove 103, and the rotating plate 210 is positioned in the first annular mounting groove 103. Part 20 passes through the first annular mounting plate 210 and is fixedly connected to the positioning plate 230. During use, rotating the rotating plate 220 can drive the positioning plate 230 to rotate, and the positioning protrusion 231 on the positioning plate 230 will rotate accordingly and can be locked into the positioning hole 2102 to fix the rotating plate 220 on the annular mounting plate 210. According to actual needs, the user can adjust the position of the bracket 30 in the circumferential direction of the housing 10 under the drive of the rotating component 20. The locking of the positioning protrusion 231 and the positioning hole 2102 can keep the bracket 30 stably in the current position, ensuring the stability of the use and thus improving the user experience.

[0045] In this embodiment, the number of positioning holes 2102 is not limited, refer to Figure 9 and Figure 10 Here is an example of eight positioning holes 2102, evenly distributed on the annular mounting plate 210. The number of snap-fit ​​parts 111 and snap-fit ​​interfaces 2101 is also not limited, and can be referenced accordingly. Figure 9 and Figure 10An example is given where eight card contacts 111 and eight card interfaces 2101 are provided. The card contacts 111 are evenly distributed on the side of the first annular mounting groove 103 near its inner ring, and the card interfaces 2101 are evenly distributed on the inner ring of the annular mounting plate 210.

[0046] As a preferred embodiment, refer to Figure 4 , Figure 9 and Figure 10 The outer wall of the housing 10 is also formed with a second annular mounting groove 104. The rotating disk 220 includes a first rotating part 221 and a second rotating part 222 that are connected to each other. The second rotating part 222 is rotatably disposed in the second annular mounting groove 104. The first rotating part 221 passes through the inner ring of the annular mounting disk 210 and is connected to the positioning disk 230. A second mounting groove 2201 is formed on the first rotating part 221 and the second rotating part 222. The mounting shaft 40 is disposed in the second mounting groove 2201. The second annular mounting groove 104 is connected to the receiving groove 102. When the opening degree θ is 110°, the bracket 30 abuts against the second rotating part 222.

[0047] The rotating disk 220 includes a first rotating part 221 and a second rotating part 222 connected to each other. When the rotating disk 220 is mounted on the housing 10, a second annular mounting groove 104 is formed on the outer wall of the housing 10. The second rotating part 222 is rotatably disposed in the second annular mounting groove 104, and the first rotating part 221 passes through the inner ring of the annular mounting disk 210 and is connected to the positioning disk 230, so that the rotating disk 220 is rotatably mounted on the housing 10. At the same time, during the rotation of the rotating disk 220, the positioning disk 230 can be driven to rotate by the first rotating part 221. Meanwhile, a second mounting groove 2201 is provided on the first rotating part 221 and the second rotating part 222 to provide an installation environment for the mounting shaft 40, so that the mounting shaft 40 is mounted on the rotating disk 220.

[0048] The second annular mounting groove 104 is connected to the receiving groove 102 so that the bracket 30 can be retracted into the housing 10, providing a receiving environment for the bracket 30. When the bracket 30 is opened to an angle of 110°, it abuts against the second rotating part 222 so that the bracket 30 can be stably supported on the housing 10, thereby improving the support performance of the bracket 30 for electronic devices and enhancing the support stability of electronic devices.

[0049] As a preferred embodiment, refer to Figure 10 A positioning shaft 2211 is provided on the side of the first rotating part 221 near the positioning disk 230. A mounting hole is formed on the positioning disk 230, and the mounting hole is fitted onto the positioning shaft 2211.

[0050] In this embodiment, when connecting the first rotating part 221 and the positioning disk 230, a positioning shaft 2211 is provided on the side of the first rotating part 221 near the positioning disk 230. The positioning shaft 2211 extends into the mounting hole provided on the positioning disk 230, so that the mounting hole is fitted onto the positioning shaft 2211, thereby achieving a fixed connection between the first rotating part 221 and the positioning disk 230. The above connection relationship in this embodiment is stable and reliable, and the positioning disk 230 is driven to rotate along with the rotating disk 220 during the rotation process.

[0051] As a preferred embodiment, refer to Figure 9 There are two positioning convex balls 231, which are located at both ends of the positioning disk 230 along the radial direction of the positioning disk 230.

[0052] Positioning protrusions 231 are respectively provided at both ends of the positioning disk 230 along the radial direction of the positioning disk 230. In order to ensure that the stability of the rotating disk 220 and the annular mounting disk 210 is strengthened after adjusting the reverse direction of the bracket 30 along the circumference of the housing 10, the stability of the bracket 30 during use is further improved.

[0053] As a preferred embodiment, refer to Figure 9 The outer ring of the annular mounting plate 210 is also provided with a plurality of mounting protrusions 211, which are embedded in the housing 10.

[0054] The mounting protrusion 211 is provided to strengthen the connection between the annular mounting plate 210 and the housing 10. In the actual installation process, the mounting protrusion 211 is directly injection molded into the housing 10 so that the mounting protrusion 211 is embedded in the housing 10, ensuring the stability of the annular mounting plate 210 on the housing 10.

[0055] As a preferred embodiment, refer to Figure 2 and Figure 7 The bracket 30 has an arc-shaped bend 31 at one end away from the mounting shaft 40. When the arc-shaped bend 31 is located in the receiving groove 102, the outer edge of the bracket 30 is flush with the outer edge of the housing 10.

[0056] The purpose of setting the arc-shaped bending part 31 is to make the outer edge of the end of the bracket 30 away from the mounting shaft 40 flush with the outer edge of the housing 10, so that the bracket 30 and the housing 10 form a whole after being set in the receiving groove 102, which improves the user experience and also ensures the aesthetics of the housing 10.

[0057] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A protective shell, characterized in that, include: A housing that forms a receiving cavity with an opening; A rotating assembly is located on the side wall of the housing away from the opening; A bracket is disposed on one side of the rotating assembly and located outside the housing. The rotating assembly is used to drive the bracket to rotate circumferentially on the housing. An elastic retaining component is provided on the bracket, and a mounting shaft is fixedly provided on the rotating assembly. The elastic retaining component is sleeved on the mounting shaft and can rotate on the mounting shaft to adjust the opening degree of the bracket on the outer wall of the housing. When the opening degree is at any angle, the elastic retaining component is in an interference fit with the mounting shaft. The elastic retaining assembly includes a connecting plate and an elastic sleeve that are connected to each other. The connecting plate is connected to the bracket by fasteners. A notch is formed between the elastic sleeve and the connecting plate. The elastic sleeve is sleeved on the mounting shaft. The cross-section of the contact surface between the elastic sleeve and the mounting shaft is a non-circular cross-section, and the cross-section of the contact surface between the mounting shaft and the elastic sleeve is also a non-circular cross-section.

2. The protective shell according to claim 1, characterized in that, Along the length of the housing, a receiving groove is formed on the housing and extends to the bottom of the housing. The receiving groove is used to receive the bracket.

3. The protective shell according to claim 2, characterized in that, The opening degree of the bracket on the outer wall of the housing is θ, and the value of θ is in the range of 0°≤θ≤110°. When the opening degree θ is 110°, the bracket can abut against the rotating assembly.

4. The protective shell according to any one of claims 2 to 3, characterized in that, The rotating assembly includes an annular mounting disk, a rotating disk, and a positioning disk; A first annular mounting groove is formed inside the housing, and the first annular mounting groove communicates with the receiving cavity. A plurality of snap-fit ​​parts are provided at intervals on the side of the first annular mounting groove near its inner ring. A plurality of snap-fit ​​interfaces are formed on the inner ring of the annular mounting plate. The annular mounting plate is disposed in the first annular mounting groove, and the snap-fit ​​parts and the snap-fit ​​interfaces are snap-fitted one by one. The positioning disk is located in the first annular mounting groove, and a portion of the rotating disk passes through the first annular mounting disk and is fixedly connected to the positioning disk. The positioning disk has a positioning protrusion ball on the side near the annular mounting disk. The annular mounting disk has multiple positioning holes. The positioning protrusion ball rotates with the rotating disk and can be inserted into each of the positioning holes, so that the rotating disk is fixed on the annular mounting disk. The mounting shaft is located on the side of the rotating disk opposite to the annular mounting disk.

5. The protective shell according to claim 4, characterized in that, A second annular mounting groove is also formed on the outer wall of the housing. The rotating disk includes a first rotating part and a second rotating part connected to each other. The second rotating part is rotatably disposed in the second annular mounting groove. The first rotating part passes through the inner ring of the annular mounting disk and is connected to the positioning disk. A second mounting groove is formed on the first rotating part and the second rotating part, and the mounting shaft is disposed in the second mounting groove; The second annular mounting groove is connected to the receiving groove, and when the opening angle θ is 110°, the bracket abuts against the second rotating part.

6. The protective shell according to claim 5, characterized in that, A positioning shaft is provided on the side of the first rotating part near the positioning disk, and a mounting hole is formed on the positioning disk, which is fitted onto the positioning shaft.

7. The protective shell according to claim 5, characterized in that, The number of positioning convex balls is two, and they are arranged at both ends of the positioning disk along the radial direction of the positioning disk.

8. The protective shell according to claim 7, characterized in that, The outer ring of the annular mounting plate is also provided with a plurality of mounting protrusions, which are embedded in the housing.

9. The protective shell according to claim 8, characterized in that, The bracket has an arc-shaped bend at one end away from the mounting shaft. When the arc-shaped bend is located in the receiving groove, the outer edge of the bracket is flush with the outer edge of the housing.

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