Support assembly

Abstract

The utility model discloses a support assembly. The support assembly comprises a shell back plate, a rotating disc and a supporting frame. A mounting groove is formed in a back plate of the shell, and the turntable is rotatably arranged in the mounting groove; the turntable comprises a clamping part and a connecting part, and the support frame is connected with the connecting part; a lug boss is arranged on the side wall of the mounting groove, and a clamping space is formed between the lug boss and the groove bottom of the mounting groove; and the clamping part is at least partially arranged in the clamping space. The mounting groove is formed in the back plate of the shell, the protruding part is arranged on the side wall of the mounting groove, and the clamping space is formed between the protruding part and the groove bottom of the mounting groove, so that after the rotating disc is mounted into the mounting groove, the clamping part of the rotating disc can be arranged in the clamping space, the rotating disc is clamped and fixed in the mounting groove, and the rotating disc makes contact with the groove bottom of the mounting groove when rotating; electronic equipment or electronic elements on the inner side of the shell backboard are prevented from being abraded, the rotary disc is installed through the installation groove and the clamping space, and installation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment support, in particular to a bracket assembly. Background Art

[0002] At present, people's demands for using electronic devices are increasing. It has become a common way to set a bracket on the housing of electronic device accessories (such as wireless charging mobile power supply) or on the protective shell of electronic devices (such as mobile phone shell), which is convenient for users to support electronic devices and provide more convenience when using electronic devices. And according to the needs, the bracket can be supported at a required angle by rotating, so the bracket will be fixed on the housing through a turntable.

[0003] In the prior art, the turntable is usually set on the shell in an inlaid manner. The shell is provided with a through groove, and the turntable is inlaid in the through groove. In this installation method, the bottom surface of the turntable will be exposed on the inside of the shell. For example, taking a mobile phone case as an example, this installation method will make the bottom surface of the turntable exposed on the inside of the mobile phone case (i.e., the side that accommodates the mobile phone). Therefore, a patch will be set on the inside of the shell to block the turntable to prevent the turntable from directly contacting the mobile phone in the mobile phone case; but when the user rotates the bracket to adjust the support angle, the turntable will rotate on the shell. In this way, after the bracket is rotated many times, it will cause wear to the patch, or cause the patch to fall off, so that the turntable may directly contact the mobile phone in the shell. In this way, when the user continues to rotate to adjust the angle of the bracket, it may cause wear to the mobile phone in the mobile phone case, so that the mobile phone case can no longer be used, reducing the service life. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a bracket assembly, in which a turntable is clamped and fixed in a mounting groove of a shell back plate. When the turntable rotates, it contacts the bottom of the mounting groove, effectively avoiding wear of electronic equipment or electronic components on the inner side of the shell back plate.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A bracket assembly includes a shell back plate, a turntable and a support frame; a mounting groove is provided on the shell back plate, and the turntable is rotatably arranged in the mounting groove; the turntable includes a clamping portion and a connecting portion, and the support frame is connected to the connecting portion; a protrusion is provided on the side wall of the mounting groove, and a clamping space is formed between the protrusion and the bottom of the mounting groove; the clamping portion is at least partially placed in the clamping space.

[0007] As a further improvement of the above technical solution, the longest radial dimension of the mounting groove is greater than the diameter dimension of the turntable.

[0008] As a further improvement of the above technical solution, a fixing member is provided on the back plate of the shell, and the fixing member and the protrusion are respectively arranged on opposite sides of the turntable; the fixing member at least partially covers the top of the clamping portion, or the side edge of the fixing member abuts against the side edge of the clamping portion.

[0009] As a further improvement of the above technical solution, a plurality of positioning posts are provided on the back plate of the housing, a plurality of positioning holes are opened on the fixing member, and the positioning posts are connected to the positioning holes;

[0010] Alternatively, a plurality of positioning holes are formed on the back plate of the shell, a plurality of positioning posts are formed on the fixing member, and the positioning posts are connected to the positioning holes.

[0011] As a further improvement of the above technical solution, a positioning piece is provided on the back plate of the shell, and an abutment portion is provided on a side of the positioning piece close to the turntable, and the abutment portion abuts against the turntable.

[0012] As a further improvement of the above technical solution, at least one positioning recess is provided on the periphery of the clamping portion, and the abutting portion can abut against the positioning recess.

[0013] As a further improvement of the above technical solution, a positioning groove is provided on the back plate of the shell, and the positioning groove is communicated with the installation groove; and the positioning member is arranged in the positioning groove.

[0014] As a further improvement of the above technical solution, a spring is provided on a side of the positioning member facing away from the clamping portion, one end of the spring abuts against the positioning member, and the other end abuts against a side wall of the positioning groove.

[0015] As a further improvement of the above technical solution, a first limiting hole is provided in the positioning groove, and a first limiting portion is provided on the positioning member, the first limiting portion is passed through the first limiting hole, and the first limiting portion can move in the positioning groove along a direction close to or away from the installation groove; or, a first limiting portion is provided in the positioning groove, and a first limiting hole is provided on the positioning member, the first limiting portion is passed through the first limiting hole, and the positioning member can move in the positioning groove along a direction close to or away from the installation groove.

[0016] As a further improvement of the above technical solution, the fixing member is fixed above the positioning member.

[0017] As a further improvement of the above technical solution, the fixing member is provided with a second limiting hole, the positioning member is provided with a second limiting portion, and the second limiting portion is located in the second limiting hole; or, the fixing member is provided with a second limiting portion, the positioning member is provided with a second limiting hole, and the second limiting portion is located in the second limiting hole.

[0018] As a further improvement of the above technical solution, a receiving groove for receiving the support frame is provided on the back plate of the shell, and the positioning groove is formed by a groove bottom depression of the receiving groove.

[0019] As a further improvement of the above technical solution, the fixing member is at least partially located in the accommodating groove, and a side of the fixing member facing the turntable is arc-shaped.

[0020] As a further improvement of the above technical solution, a connecting groove is provided on the connecting part, and the support frame is rotatably connected to the connecting part through a rotating shaft, and the rotating shaft is arranged in the connecting groove; an avoidance position is provided on the connecting part so that the connecting groove is connected to the accommodating groove.

[0021] As a further improvement of the above technical solution, a fixing groove is formed between the connecting portion and the clamping portion, and the protrusion can be clamped in the fixing groove.

[0022] The beneficial effects of the utility model are as follows: by setting a mounting groove on the back plate of the shell, a clamping space is formed between a protrusion set on the side wall of the mounting groove and the bottom of the mounting groove, after the turntable is installed in the mounting groove, its clamping portion can be placed in the clamping space, so that the turntable is clamped and fixed in the mounting groove, and when the turntable rotates, it contacts the bottom of the mounting groove to avoid wear on the electronic equipment or electronic components on the inner side of the back plate of the shell, and the turntable is installed by using the mounting groove and the clamping space, which is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a three-dimensional schematic diagram of the bracket assembly of the utility model;

[0025] Figure 2 yes Figure 1 Explosion diagram of

[0026] Figure 3 yes Figure 1 The enlarged schematic diagram of point A in the middle;

[0027] Figure 4 It is a three-dimensional schematic diagram of the rotating disk and the positioning member of the utility model;

[0028] Figure 5 It is a side view of the rotating disk and the positioning member of the utility model;

[0029] Figure 6 It is a three-dimensional schematic diagram of the fixing member of the utility model;

[0030] Figure 7 It is a cross-sectional schematic diagram of the utility model bracket cover being closed on the back plate of the shell;

[0031] Figure 8 yes Figure 7 A magnified schematic diagram of point B in the middle.

[0032] Explanation of the reference numerals: 1-shell back plate; 11-installation groove; 111-protrusion; 12-positioning groove; 121-positioning column; 122-first limiting hole; 13-accommodating groove; 2-support frame; 3-turntable; 31-clamping portion; 311-positioning recess; 32-connecting portion; 33-fixing groove; 34-avoidance position; 35-connecting groove; 4-fixing member; 41-second limiting hole; 42-positioning hole; 5-positioning member; 51-abutment portion; 52-first limiting portion; 53-second limiting portion; 54-spring. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0034] Please refer to Figures 1 to 4 The utility model provides a bracket assembly, including a shell back plate 1, a turntable 3 and a support frame 2. The support frame 2 is installed on the shell back plate 1 through the turntable 3, and the support frame 2 is used to provide a support function. The shell back plate 1 can be the shell back plate of a protective shell of an electronic device such as a mobile phone, or it can be the shell back plate of an electronic device accessory such as a wireless charging mobile power supply. When it is the shell back plate of a protective shell of an electronic device such as a mobile phone, the utility model solution can prevent the turntable 3 from rubbing against the mobile phone and other electronic devices. When it is the shell back plate of an electronic device accessory such as a wireless charging mobile power supply, the utility model solution can prevent the turntable 3 from rubbing against the electronic components in its shell. Specifically, in the implementation of the utility model, the shell back plate 1 takes the shell back plate of a mobile phone protective shell as an example.

[0035] The housing back plate 1 is provided with a mounting groove 11, the turntable 3 is rotatably arranged in the mounting groove 11, and the support frame 2 can rotate with the turntable 3, so that the user can adjust the support angle conveniently. The bottom of the mounting groove 11 is located between the turntable 3 and the mobile phone, which can prevent the turntable 3 from rubbing against the mobile phone in the mobile phone case when rotating in the mounting groove 11.

[0036] In order to facilitate the engagement of the turntable 3 in the mounting groove 11, the turntable 3 includes a clamping portion 31 and a connecting portion 32. The clamping portion 31 is connected to the bottom of the connecting portion 32, and the bottom of the connecting portion 32 is a side close to the mounting groove 11. The diameter of the clamping portion 31 is larger than the diameter of the connecting portion 32, forming a circle of extension at the bottom of the turntable 3.

[0037] A protrusion 111 is provided on the side wall of the installation groove 11, and the protrusion 111 is provided in the middle of the side wall of the installation groove 11. There is a certain distance between the protrusion 111 and the bottom of the installation groove 11, thereby forming a clamping space. The clamping portion 31 at the bottom of the turntable 3 is placed in the clamping space, and the turntable 3 is restricted in the installation groove 11.

[0038] The longest radial dimension of the mounting groove 11 is larger than the diameter of the turntable 3, so the turntable 3 can be first placed in the mounting groove 11 from the side of the mounting groove 11 away from the protrusion 111, and then the clamping portion 31 is placed in the clamping space by sliding the turntable 3, so as to fix the turntable 3 in the mounting groove 11. In addition, the clamping portion 31 forms a circle of extension at the bottom of the turntable 3, so that when the turntable 3 rotates in the mounting groove 11, a part of the clamping portion 31 is always located in the clamping space, which can keep the turntable 3 in the mounting groove 11 and will not fall out.

[0039] In this embodiment, the mounting groove 11 is an elliptical groove, the turntable 3 is a circular turntable, and the clamping space is arranged at one end of the mounting groove 11. The turntable 3 can be inserted into the mounting groove 11 from the other end of the mounting groove 11 and moved toward the clamping space, so that part of the clamping portion 31 is placed in the clamping space.

[0040] The turntable 3 is arranged in the mounting groove 11, and the space of the mounting groove 11 is larger than the size of the turntable 3, so that the clamping portion 31 can be directly moved into the clamping space after being placed in the mounting groove 11, and the turntable 3 is clamped and fixed. The installation of the turntable 3 is simplified, the operation is simple and convenient, and the turntable 3 is convenient to disassemble and maintain. At the same time, the combination of the mounting groove 11 and the clamping portion 31 can ensure that the turntable 3 is not easy to loosen or fall off during use, thereby improving the reliability of the entire bracket assembly.

[0041] Please continue to refer to Figure 3 , Figure 6 , Figure 7 as well as Figure 8, the raised portion 111 is arranged in an annular manner around the inner circumferential wall of the mounting groove 11 to form a large semicircular ring or a small semicircular ring, and the semicircular area of ​​the clamping portion 31 can be placed in the clamping space. A fixing member 4 is provided on the back plate 1 of the shell, and the fixing member 4 is arranged on the side of the turntable 3 opposite to the raised portion 111, and is used to cooperate with the raised portion 111 to limit the turntable 3 as a whole. The side of the fixing member 4 close to the turntable 3 covers above the clamping portion 31, so that the clamping portion 31 is limited between the fixing member 4 and the bottom of the mounting groove 11, thereby limiting the turntable 3 and preventing the turntable 3 from escaping from the mounting groove 11. In other embodiments, it is also possible that the side of the fixing member 4 abuts against the side of the clamping portion 31, thereby preventing the clamping portion 31 from escaping from the clamping space and limiting the turntable 3 in the mounting groove 11.

[0042] Furthermore, in order to stably fix the fixing member 4 on the housing back plate 1 and to limit the turntable 3 more stably, the fixing member 4 is riveted on the housing back plate 1. A plurality of positioning holes 42 are provided on the fixing member 4, and a plurality of positioning posts 121 are provided on the housing back plate 1. The positioning posts 121 correspond to the positions of the positioning holes 42 one by one, and the positioning posts 121 penetrate the positioning holes 42, so that the fixing member 4 is riveted on the housing back plate 1.

[0043] Similarly, as another embodiment, a plurality of positioning posts 121 may be provided on the fixing member 4, and a plurality of positioning holes 42 may be opened on the shell back plate 1 at the same time, and the positioning posts 121 correspond to the positions of the positioning holes 42 one by one, so that the positioning posts 121 pass through the positioning holes 42, thereby riveting the fixing member 4 to the shell back plate 1.

[0044] The two sides of the clamping portion 31 of the turntable 3 are respectively clamped in the clamping space and below the fixing member 4, and the fixing member 4 is fixedly arranged on the housing back plate 1, and the fixing member 4 abuts and restricts the side of the turntable 3, thereby preventing the turntable 3 from slipping out of the mounting groove 11 upward. In addition, the fixing member 4 is provided with an arc edge matching the periphery of the turntable 3 on the side facing the turntable 3, thereby better limiting the turntable 3 and enabling the turntable 3 to rotate smoothly in the clamping space.

[0045] Please refer to Figure 2 , Figure 4 as well as Figure 5 A positioning member 5 is also provided on the shell back plate 1. The positioning member 5 abuts against the turntable 3 and is used to cooperate with the turntable 3 so that the turntable 3 can be positioned when it rotates to a predetermined angle.

[0046] Among them, the positioning member 5 is provided with an abutting portion 51 on one side close to the clamping portion 31, and the abutting portion 51 abuts against the clamping portion 31. A positioning notch 311 is provided on the clamping portion 31, and the positioning notch 311 is recessed in the outer wall of the clamping portion 31. The size of the abutting portion 51 is consistent with the size of the positioning notch 311. When the turntable 3 rotates and the positioning notch 311 rotates to correspond to the abutting portion 51, the abutting portion 51 abuts against the positioning notch 311. The abutting cooperation between the abutting portion 51 and the positioning notch 311 ensures the stable positioning of the turntable 3, so that the support frame 2 can be positioned at the preset angle after rotating to the preset angle.

[0047] The portion where the positioning notch 311 is connected to the outer wall of the clamping portion 31 has a rounded corner. When the turntable 3 rotates, the abutting portion 51 abuts against the outer wall of the clamping portion 31 and slides, and is introduced into the positioning notch 311 through the rounded corner. When the abutting portion 51 is clamped into the positioning notch 311, the turntable 3 is rotated by external force, so that the abutting portion 51 can be drawn along the arc of the rounded corner. The rounded corner between the positioning notch 311 and the outer wall can realize the smooth rotation of the turntable 3 while the abutting portion 51 remains in abutment, ensuring that the abutting portion 51 can smoothly enter and exit the positioning notch 311, thereby improving the operability and user experience of the turntable 3.

[0048] Furthermore, at least one positioning recess 311 is provided on the clamping portion 31. When two or more positioning recesses 311 are provided, each positioning recess 311 is evenly distributed on the clamping portion 31, so that the turntable 3 can be positioned in multiple positions, which facilitates the support frame 2 to be fixed in different directions for support.

[0049] In this embodiment, the clamping portion 31 is evenly provided with four positioning notches 311. During the rotation of the turntable 3, the positioning member 5 can be positioned in four directions. When each positioning notch 311 rotates to a position corresponding to the positioning member 5, the positioning member 5 can be clamped in the positioning notch 311. The support frame 2 can be rotated to a desired angle direction according to needs, and the positioning member 5 can be clamped in the corresponding positioning notch 311 for fixed use.

[0050] Please continue to refer to Figure 2 , Figure 3 , Figure 4 as well as Figure 8 A positioning groove 12 is provided on the housing back plate 1 for arranging the positioning member 5 so that the positioning member 5 can abut against the clamping portion 31. The mounting groove 11 is connected to the positioning groove 12, and the positioning member 5 is arranged in the positioning groove 12, flush with and abutting against the clamping portion 31.

[0051] A spring 54 is sleeved on the side of the positioning member 5 away from the clamping portion 31, one end of the spring 54 abuts against the positioning member 5, and the other end abuts against the side wall of the positioning groove 12. The spring 54 applies an elastic force to the positioning member 5 in the direction of the clamping portion 31, so that the positioning member 5 and the clamping portion 31 always maintain an abutting state. When the turntable 3 rotates so that the positioning notch 311 corresponds to the positioning member 5, the positioning member 5 can be clamped into the notch 311 by the force of the spring 54, so that the positioning of the turntable 3 is achieved.

[0052] Due to the recessed positioning notch 311, the positioning member 5 moves back and forth in the positioning groove 12. In order to prevent the positioning member 5 from being offset, a first limiting hole 122 is provided on the positioning groove 4, and the positioning member 5 is provided with a first limiting portion 52, and the first limiting portion 52 is inserted into the first limiting hole 122. The first limiting hole 122 is provided with a certain length range, so the first limiting portion 52 moves back and forth in the first limiting hole 122 with the positioning member 5. The first limiting portion 52 cooperates with the first limiting hole 122 to limit the displacement of the positioning member 5 when it moves in the positioning groove 12 in the direction close to or away from the installation groove 11, thereby preventing the positioning member 5 from being offset when moving.

[0053] Similarly, as another embodiment, a first limiting hole 122 may be opened on the positioning member 5, and the positioning groove 4 may be provided with a first limiting portion 52, and the first limiting portion 52 is passed through the first limiting hole 122, so that the positioning member 5 can move in a direction close to or away from the installation groove 11.

[0054] Furthermore, in this embodiment, the fixing member 4 is arranged above the positioning member 5, and the positioning member 5 is restricted in the positioning groove 12. In addition, a second limiting hole 41 is provided on the fixing member 4, and the positioning member 5 is provided with a second limiting portion 53 opposite to the second limiting hole 41, and is penetrated in the second limiting hole 41, and the second limiting portion 53 moves back and forth in the second limiting hole 41 along with the positioning member 5. Similarly, as another embodiment, a second limiting portion 53 may be provided on the fixing member 4, and the positioning member 5 is provided with a second limiting hole 41 opposite to the second limiting portion 53, and the second limiting portion 53 is penetrated in the second limiting hole 41.

[0055] The positioning member 5 is provided with a first limiting portion 52 and a second limiting portion 53, which are respectively movably arranged in the first limiting hole 122 and the second limiting hole 41, so that the upper and lower sides of the positioning member 5 have limiting structures to avoid deviation during the movement process. At the same time, the positioning member 5 can also be limited up and down to ensure that the positioning member 5 is always in the positioning groove 12 and abuts against the clamping portion 31 of the turntable 3.

[0056] Furthermore, the side of the fixing member 4 facing the turntable 3 is arc-shaped, which can match the curvature of the turntable 3, so that the fixing member 4 and the turntable 3 are more closely fitted, thereby ensuring the limiting effect on the turntable 3.

[0057] Please continue to refer to Figure 1 as well as Figure 2 A receiving groove 13 for receiving the support frame 2 is provided on the back plate 1 of the housing, and the shape of the receiving groove 13 matches the support frame 2. The support frame 2 can be turned over on the turntable 3 to the receiving groove 13, so that the support frame 2 is stored in the receiving groove 13 of the back plate 1 of the housing, which can make the entire housing more compact and easy to carry.

[0058] Furthermore, the positioning groove 12 is provided on one side of the receiving groove 13 adjacent to the mounting groove 11, and the positioning groove 12 is formed by being recessed from the bottom of the receiving groove 13. Among them, the fixing member 4 is at least partially provided in the receiving groove 13, and the rest is fixed above the clamping portion 31, so as to simultaneously restrict the positioning member 5 in the positioning groove 12 and restrict the turntable 3 in the mounting groove 11. Moreover, the side of the fixing member 4 close to the turntable 3 is in a concave arc shape, which can be clamped into the fixing groove 33 of the turntable 3 and match the outer circumference of the turntable 3. By fixing the fixing member 4 with the other side of the turntable 3, the turntable 3 can be restricted in the mounting groove 11 to avoid back and forth movement, and the turntable 3 is more stable when rotating in the mounting groove 11.

[0059] Please continue to refer to Figure 2 as well as Figure 4 In order to facilitate the connection between the support frame 2 and the turntable 3 and enable the support frame 2 to rotate relative to the turntable 3, the connection portion 32 is provided with a connection groove 35 for setting a rotation shaft, and the support frame 2 is rotatably connected to the connection portion 32 through the rotation shaft. The rotation shaft is arranged in the connection groove 35, so that the support frame 2 can be turned over on the housing back plate 1 through the rotation shaft.

[0060] The connection portion 32 is provided with an escape position 34, and the support frame 2 can rotate within the range of the escape position 34, and the escape position 34 ensures the rotation range of the support frame 2 on the turntable 3; when the support frame 2 is stored in the receiving groove 13, the support frame 2 is at least partially placed in the escape position 34. The escape position 34 allows the connection groove 35 to communicate with the receiving groove 13, ensuring that the support frame 2 remains flat after being covered and stored on the shell back plate 1.

[0061] Please refer again Figure 4 as well as Figure 5 A fixing groove 33 is concavely formed in the circumferential direction of the outer wall of the connecting portion 32, and the fixing groove 33 is located between the clamping portion 31 and the connecting portion 32. When the clamping portion 31 is arranged in the clamping space, the protrusion 111 can be placed in the fixing groove 33, so that the turntable 3 is further restricted in the installation groove 11, and the protrusion 111 can be hidden in the fixing groove 33.

[0062] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A bracket assembly, characterized in that: The invention comprises a shell back plate (1), a rotating disk (3) and a supporting frame (2); the shell back plate (1) is provided with a mounting groove (11), and the rotating disk (3) is rotatably arranged in the mounting groove (11); the rotating disk (3) comprises a clamping portion (31) and a connecting portion (32), and the supporting frame (2) is connected to the connecting portion (32); A protrusion (111) is provided on the side wall of the installation groove (11), and a clamping space is formed between the protrusion (111) and the groove bottom of the installation groove (11); the clamping portion (31) is at least partially disposed in the clamping space.

2. The bracket assembly according to claim 1, characterized in that: The longest radial dimension of the mounting groove (11) is greater than the diameter dimension of the rotating disk (3).

3. The bracket assembly according to claim 1, characterized in that: A fixing member (4) is provided on the shell back plate (1), and the fixing member (4) and the protruding portion (111) are respectively arranged on opposite sides of the turntable (3); the fixing member (4) at least partially covers the upper part of the clamping portion (31), or the side edge of the fixing member (4) abuts against the side edge of the clamping portion (31).

4. The bracket assembly according to claim 3, characterized in that: The housing back plate (1) is provided with a plurality of positioning posts (121), the fixing member (4) is provided with a plurality of positioning holes (42), and the positioning posts (121) are connected to the positioning holes (42); Alternatively, a plurality of positioning holes (42) are provided on the shell back plate (1), a plurality of positioning posts (121) are provided on the fixing member (4), and the positioning posts (121) are connected to the positioning holes (42).

5. The bracket assembly according to claim 3, characterized in that: A positioning member (5) is provided on the shell back plate (1), and a contact portion (51) is provided on a side of the positioning member (5) close to the rotating disk (3), and the contact portion (51) contacts the rotating disk (3).

6. The bracket assembly according to claim 5, characterized in that: At least one positioning notch (311) is provided on the periphery of the clamping portion (31), and the abutting portion (51) can abut against the positioning notch (311).

7. The bracket assembly according to claim 5, characterized in that: The shell back plate (1) is provided with a positioning groove (12), and the positioning groove (12) is communicated with the mounting groove (11); the positioning member (5) is arranged in the positioning groove (12).

8. The bracket assembly according to claim 7, characterized in that: A spring (54) is provided on the side of the positioning member (5) facing away from the clamping portion (31); one end of the spring (54) abuts against the positioning member (5), and the other end abuts against the side wall of the positioning groove (12).

9. The bracket assembly according to claim 7, characterized in that: A first limiting hole (122) is provided in the positioning groove (12), a first limiting portion (52) is provided on the positioning member (5), the first limiting portion (52) is inserted into the first limiting hole (122), and the positioning member (5) can move in the positioning groove (12) in a direction approaching or moving away from the installation groove (11); Alternatively, a first limiting portion (52) is provided in the positioning groove (12), a first limiting hole (122) is provided on the side of the positioning member (5) facing the positioning groove (12), the first limiting portion (52) is inserted into the first limiting hole (122), and the positioning member (5) can move in the positioning groove (12) in a direction approaching or moving away from the installation groove (11).

10. The bracket assembly according to claim 7, characterized in that: The fixing member (4) is fixed above the positioning member (5).

11. The bracket assembly according to claim 10, characterized in that: The fixing member (4) is provided with a second limiting hole (41), and the positioning member (5) is provided with a second limiting portion (53), and the second limiting portion (53) is located in the second limiting hole (41); Alternatively, the fixing member (4) is provided with a second limiting portion (53), the positioning member (5) is provided with a second limiting hole (41), and the second limiting portion (53) is located in the second limiting hole (41).

12. The bracket assembly according to any one of claims 7 to 11, characterized in that: The housing back plate (1) is provided with a receiving groove (13) for receiving the support frame (2), and the positioning groove (12) is formed by being recessed from the bottom of the receiving groove (13).

13. The bracket assembly according to claim 12, characterized in that: The fixing member (4) is at least partially located in the accommodating groove (13), and the side of the fixing member (4) facing the rotating disk (3) is arc-shaped.

14. The bracket assembly according to claim 12, characterized in that: The connecting portion (32) is provided with a connecting groove (35), and the supporting frame (2) is rotatably connected to the connecting portion (32) via a rotating shaft, and the rotating shaft is arranged in the connecting groove (35); the connecting portion (32) is provided with an avoidance position (34), so that the connecting groove (35) is communicated with the accommodating groove (13).

15. The bracket assembly according to any one of claims 1 to 11, characterized in that: A fixing groove (33) is formed between the connecting portion (32) and the clamping portion (31), and the protruding portion (111) can be clamped in the fixing groove (33).

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