Rotary chassis assembly and mounting bracket

Abstract

The embodiment of the utility model provides a rotary chassis assembly and a mounting bracket, and the rotary chassis assembly comprises a rotary plate which is provided with a first limiting part and a hollow part and is used for being arranged on a supporting surface; the bottom plate is rotationally connected with the rotating plate and is provided with a second limiting part and a mounting part; when the bottom plate rotates to a first position relative to the rotating plate, the second limiting part is matched with the first limiting part, the degree of freedom of relative rotation of the rotating plate and the bottom plate is limited, and the hollow part is opposite to the mounting part, so that the connecting piece can extend into the mounting part from the hollow part; and when the bottom plate rotates from the first position to the second position relative to the rotating plate, the second limiting part and the first limiting part are not matched, and the degree of freedom of relative rotation of the bottom plate and the rotating plate is recovered. Even if vibration occurs in the transportation process, the hollowed-out part and the installation part can be kept opposite, a user can stretch the connecting piece into the installation part from the hollowed-out part and connect the connecting piece with the installation piece, the installation support is easy to assemble, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to display support technical field especially, it is a kind of rotary chassis assembly and installation support. BACKGROUND

[0002] Display is the common carrier used to present electronic information, it is usually installed on installation support, by installation support to support display and adjust the angle of display.

[0003] In order to reduce transportation cost, installation support is usually transported in the form of multiple components, after receiving goods, user needs to assemble multiple components to form complete installation support.In prior art, the structure design of installation support is unreasonable, after transportation is completed, the assembly between each component is more complex, and user experience is poor. UTILITARY MODEL CONTENTS

[0004] The utility model at least solves one of the technical problems in prior art. To this end, the utility model provides a rotary chassis assembly and installation support, which can simplify the assembly of each component and improve user experience.

[0005] In a first aspect, the utility model provides a rotary chassis assembly, which comprises: a rotating plate provided with a first limiting portion and a hollow portion and arranged on a support surface; a bottom plate rotationally connected with the rotating plate and provided with a second limiting portion and a mounting portion; when the bottom plate rotates relative to the rotating plate to a first position, the second limiting portion cooperates with the first limiting portion, the freedom of relative rotation of the rotating plate and the bottom plate is limited, the hollow portion is opposite to the mounting portion to allow a connecting member to extend from the hollow portion into the mounting portion, and the connecting member is used to connect a mounting member for mounting a display; when the bottom plate rotates relative to the rotating plate from the first position to a second position, the second limiting portion is disengaged from the first limiting portion, and the freedom of relative rotation of the bottom plate and the rotating plate is restored.

[0006] The rotary chassis assembly provided in the first aspect of the utility model has at least the following beneficial effects:

[0007] By setting the first limiting part on the rotating plate and the second limiting part on the bottom plate, the bottom plate can be rotated to the first position relative to the rotating plate before transportation, so that the second limiting part and the first limiting part cooperate to limit the degree of freedom of relative rotation of the rotating plate and the bottom plate. Even if vibration occurs during transportation, the hollow part and the mounting part can remain relative, the user can insert the connecting piece from the hollow part into the mounting part and connect it with the mounting piece, the assembly of the mounting bracket is relatively simple, the user experience is improved, and after assembly is completed, the user can rotate the bottom plate relative to the rotating plate from the first position to the second position by external force, so that the second limiting part and the first limiting part are disengaged, and the bottom plate and the rotating plate restore the degree of freedom of relative rotation, so as to facilitate adjustment of the angle of the display.

[0008] In an embodiment of the embodiment, one of the first limiting part and the second limiting part is configured as a groove, and the other of the first limiting part and the second limiting part is configured as a protrusion; when the bottom plate is in the first position relative to the rotating plate, the protrusion is located in the groove; when the bottom plate is in the second position relative to the rotating plate, the protrusion is located outside the groove.

[0009] In an embodiment of the embodiment, the groove has a first inner side wall and a second inner side wall opposite in the circumferential direction, and the protrusion has a first side and a second side opposite to each other, when the protrusion is located in the groove, the first inner side wall and the first side abut, and the second inner side wall and the second side abut.

[0010] In an embodiment of the embodiment, the first inner side wall is an inner concave arc surface, the first side is an outer convex arc surface, and / or the second inner side wall is an inner concave arc surface, and the second side is an outer convex arc surface.

[0011] In an embodiment of the embodiment, the groove has a first outer side wall and a second outer side wall opposite in the circumferential direction, the first outer side wall is inclined relative to the bottom plate to enable the protrusion to slide along the first outer side wall into the groove, and / or the second outer side wall is inclined relative to the bottom plate to enable the protrusion to slide along the first outer side wall into the groove.

[0012] In an embodiment of the embodiment, the groove has a first end surface, and the protrusion has a second end surface, the first end surface and the second end surface are parallel to the bottom plate.

[0013] In an embodiment of the embodiment, the rotating bottom plate assembly comprises a locking piece, the rotating plate is provided with a shaft hole, the locking piece is rotationally fitted in the shaft hole, one end of the locking piece abuts against a side of the rotating plate away from the bottom plate, and the other end of the locking piece is connected with the bottom plate.

[0014] In one embodiment of the embodiment, a boss is formed on a side of the rotating plate facing the bottom plate, the shaft hole is formed in the boss, and the first limiting part is connected with an outer circumferential surface of the boss.

[0015] In one embodiment of the embodiment, a counterbore is formed on a side of the bottom plate facing the rotating plate, and the boss is accommodated in the counterbore.

[0016] In one embodiment of the embodiment, the hollow part is provided with a first through hole, the mounting part is provided with an avoiding slot, a bottom wall of the avoiding slot is provided with a second through hole, the avoiding slot is used for accommodating one end of the connecting piece, and the first through hole and the second through hole are used for allowing the connecting piece to pass through.

[0017] In one embodiment of the embodiment, the rotating chassis assembly comprises a cover plate, the bottom plate is fixedly connected to a bottom side of the cover plate, the cover plate is provided with a third through hole opposite to the second through hole, and the third through hole is used for allowing the connecting piece to pass through.

[0018] In a second aspect, the utility model provides a mounting support, mounting support includes connecting piece, mounting piece and first aspect any one embodiment of the rotating chassis assembly, connecting piece is located mounting part with, and with mounting piece connects, mounting piece is used for installing display.

[0019] The mounting support provided by the second aspect of the utility model has at least the following beneficial effects:

[0020] By adding the rotating chassis assembly provided by the embodiment of the utility model in the mounting support, after completing transportation, the user can complete the quick assembly of the mounting piece and the rotating chassis assembly through the connecting piece, the assembly is relatively simple, and the user experience is improved.

[0021] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further described below in combination with the drawings and embodiments, wherein:

[0023] Figure 1 is a perspective structural schematic view of the rotating chassis assembly provided with the connecting piece in one embodiment of the embodiment of the utility model;

[0024] Figure 2 is Figure 1 a structural schematic view of the connecting piece and the rotating chassis assembly in a disassembled state of

[0025] Figure 3 isFigure 1 A structural schematic diagram of the connectors and rotating chassis assembly in a disassembled state from another perspective.

[0026] Figure 4 yes Figure 2 A magnified structural diagram of region I;

[0027] Figure 5 yes Figure 3 A magnified structural diagram of region II;

[0028] Figure 6 yes Figure 1 A cross-sectional view of the connector and rotating chassis assembly through the locking element;

[0029] Figure 7 yes Figure 1 A cross-sectional view of the connector and rotating chassis assembly through the first and second limiting parts.

[0030] Figure label:

[0031] Rotating chassis assembly 100; connector 200; rotating plate 10; first limiting part 11; groove 111; first inner side wall 1111; second inner side wall 1112; first outer side wall 1113; second outer side wall 1114; first end face 1115; hollow part 12; first through hole 121; shaft hole 13; boss 14; base plate 20; second limiting part 21; protrusion 211; first side 2111; second side 2112; second end face 2115; mounting part 22; clearance groove 221; second through hole 222; threaded hole 23; countersunk hole 24; locking part 30; cover plate 40; third through hole 41. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of the utility model, if the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. Understand as not including the number, above, below, within, etc. Understand as including the number. If it is described to the first, the second is only used for distinguishing the purpose of technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0035] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be understood broadly, and the person skilled in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0036] In the description of the utility model, the description of reference terms such as "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] In the related art, the rotating base assembly of the mounting support usually has the function of rotation to realize the angle adjustment of the display. In order to facilitate the user to install and reduce the number of components of the mounting support disassembled before transportation, the rotating base assembly is usually transported as a whole, and after being transported to the destination, the user connects the rotating base assembly through the connecting piece and connects the mounting piece, so that the rotating base assembly and the mounting piece are connected together, and the assembly of the mounting support is completed. However, since the rotating base assembly is a whole, the relative rotation freedom thereof is reserved, and the shaking and vibration generated during transportation will cause the rotating base assembly to rotate relatively, so that the installation position of the rotating base assembly cannot be leaked, and the user needs to find the installation position of the rotating base assembly for installation, which is relatively complex and has poor user experience.

[0038] Please refer to Figure 1 and Figure 2 , Figure 1 is a three-dimensional structure schematic diagram of the rotating base assembly 100 provided with the connecting piece 200 under an embodiment of the utility model embodiment; Figure 2 is Figure 1Figure 2 is a structural schematic view of the connecting piece 200 and the rotating chassis assembly 100 in an exploded state. The mounting support provided by the embodiment of the present application comprises the connecting piece 200, a mounting piece (not shown) and the rotating chassis assembly 100 of the embodiment of the present application. The connecting piece 200 is arranged on the mounting portion 22 and is connected with the mounting piece. The mounting piece is used for mounting a display. Specifically, the rotating chassis assembly 100 can be arranged on a horizontal support surface such as a desktop or can be arranged on a vertical support surface such as a wall surface. The mounting piece can be a stand column capable of realizing height adjustment, pitch angle adjustment, horizontal orientation adjustment and the like. The present application does not specifically limit the form of the mounting piece. By adding the rotating chassis assembly 100 provided by the embodiment of the present application in the mounting support, after transportation is completed, a user can complete the quick assembly of the mounting piece and the rotating chassis assembly 100 through the connecting piece 200. The assembly is relatively simple, and user experience is improved.

[0039] Please refer to Figures 2 to 4 , Figure 3 is Figure 1 Figure 2 is a structural schematic view of the connecting piece 200 and the rotating chassis assembly 100 in an exploded state from another angle; Figure 4 is Figure 2 Figure 2 is a structural schematic view of the connecting piece 200 and the rotating chassis assembly 100 in an exploded state from another angle; The embodiment of the present application provides a rotating chassis assembly 100. The rotating chassis assembly 100 comprises a rotating plate 10 and a bottom plate 20. The rotating plate 10 is provided with a first limiting portion 11 and a hollow portion 12 and is arranged on a support surface. The bottom plate 20 is rotationally connected with the rotating plate 10 and is provided with a second limiting portion 21 and a mounting portion 22. When the bottom plate 20 rotates relative to the rotating plate 10 to a first position, the second limiting portion 21 cooperates with the first limiting portion 11. The freedom of relative rotation of the rotating plate 10 and the bottom plate 20 is limited. The hollow portion 12 is opposite to the mounting portion 22 so as to allow the connecting piece 200 to extend into the mounting portion 22 from the hollow portion 12. The connecting piece 200 is used for connecting a mounting piece for mounting a display. When the bottom plate 20 rotates relative to the rotating plate 10 from the first position to a second position, the second limiting portion 21 is disengaged from the first limiting portion 11. The freedom of relative rotation of the bottom plate 20 and the rotating plate 10 is restored.

[0040] Specifically, the rotating plate 10 can be placed on a horizontal support surface such as a desktop or can be arranged on a vertical support surface such as a wall surface. The first limiting portion 11 is arranged on the side of the rotating plate 10 facing the bottom plate 20. The second limiting portion 21 is arranged on the side of the bottom plate 20 facing the bottom plate.

[0041] Specifically, both the first limiting part 11 and the hollow part 12 are spaced apart from the axis around which the base plate 20 rotates relative to the rotating plate 10, so that the positions of the first limiting part 11 and the hollow part 12 relative to the base plate 20 can change during the rotation of the base plate 20 relative to the rotating plate 10. Similarly, both the second limiting part 21 and the mounting part 22 are spaced apart from the axis around which the base plate 20 rotates relative to the rotating plate 10, so that the positions of the second limiting part 21 and the mounting part 22 relative to the rotating plate 10 can change during the rotation of the base plate 20 relative to the rotating plate 10. Thus, the first limiting part 11 and the second limiting part 21 can engage or disengage during the relative rotation of the base plate 20 and the rotating plate 10. The engagement of the first limiting part 11 and the second limiting part 21 can be various forms, such as a snap-fit ​​engagement or a convex-concave engagement.

[0042] It is understandable that with the cooperation of the first limiting part 11 and the second limiting part 21, the degree of freedom of relative rotation of the rotating plate 10 and the base plate 20 is restricted. It is possible that the rotating plate 10 and the base plate 20 can only rotate relative to each other at a certain angle, such as only 5°, or the rotating plate 10 and the base plate 20 can not rotate relative to each other at all.

[0043] By providing a first limiting part 11 on the rotating plate 10 and a second limiting part 21 on the base plate 20, the base plate 20 can be rotated relative to the rotating plate 10 to a first position before transportation, so that the second limiting part 21 and the first limiting part 11 cooperate to restrict the degree of freedom of relative rotation of the rotating plate 10 and the base plate 20. Even if vibration occurs during transportation, the cutout part 12 and the mounting part 22 can remain relative. The user can insert the connector 200 from the cutout part 12 into the mounting part 22 and connect it to the mounting part. The assembly of the mounting bracket is relatively simple, which improves the user experience. Moreover, after assembly, the user can use external force to rotate the base plate 20 relative to the rotating plate 10 from the first position to the second position, so that the second limiting part 21 and the first limiting part 11 are disengaged, and the base plate 20 and the rotating plate 10 regain the degree of freedom of relative rotation, so as to adjust the angle of the display.

[0044] In one embodiment of this implementation, please refer to Figures 4 to 6 , Figure 5 yes Figure 3 A magnified structural diagram of region II; Figure 6 yes Figure 1Figure 6 is a sectional view of the connecting piece 200 and the rotating chassis assembly 100 in a cross section passing through the locking piece 30. One of the first limiting part 11 and the second limiting part 21 is configured as a groove 111, and the other is configured as a protrusion 211. When the bottom plate 20 is in the first position relative to the rotating plate 10, the protrusion is located in the groove 111. When the bottom plate 20 is in the second position relative to the rotating plate 10, the protrusion is located outside the groove 111. In this embodiment, the first limiting part 11 is configured as the groove 111, and the second limiting part 21 is configured as the protrusion 211. In other embodiments, the first limiting part 11 can also be configured as the protrusion 211, and the second limiting part 21 can also be configured as the groove 111. The cooperation and disengagement of the protrusion 211 and the groove 111 are relatively easy, and the structure is relatively simple.

[0045] In this embodiment, when the bottom plate 20 is in the second position relative to the rotating plate 10, the bottom plate 20 has a 173° rotatable freedom relative to the rotating plate 10.

[0046] In one embodiment of this implementation, referring to Figures 4 to 6 , the groove 111 has a first inner side wall 1111 and a second inner side wall 1112 opposite in the circumferential direction, and the protrusion has a first side surface 2111 and a second side surface 2112 opposite. When the protrusion is located in the groove 111, the first inner side wall 1111 and the first side surface 2111 abut, and the second inner side wall 1112 and the second side surface 2112 abut. In this way, the protrusion can be clamped in the groove 111, and the bottom plate 20 and the rotating plate 10 cannot be rotated relative to each other.

[0047] In one embodiment of this implementation, referring to Figures 4 to 6 , the first inner side wall 1111 is an arc surface concave inward, and the first side surface 2111 is an arc surface convex outward. Specifically, the first inner side wall 1111 and the first side surface 2111 are fitted to improve the shock absorption capacity and reduce the risk of disengagement of the first limiting part 11 and the second limiting part 21 during transportation. In this way, the first inner side wall 1111 and the first side surface 2111 are configured as matching arc surfaces, which can reduce the external force required for the bottom plate 20 to rotate from the first position to the second position, so as to facilitate the user to complete the assembly, release the restriction of the relative rotation freedom, and normally use the mounting bracket.

[0048] In one embodiment of this implementation, referring to Figures 4 to 6The second inner side wall 1112 is concave, and the second side surface 2112 is convex. Specifically, the second inner side wall 1112 and the second side surface 2112 are matched to improve the buffering capacity of the vibration and reduce the risk of disengagement of the first limiting part 11 and the second limiting part 21 during transportation. In this way, the second inner side wall 1112 and the second side surface 2112 are configured as matching arc surfaces, which can reduce the external force required for the bottom plate 20 to rotate from the first position to the second position, so as to facilitate the user to complete the assembly and release the limitation of the relative rotation freedom, and normally use the mounting bracket.

[0049] In this embodiment, the first inner side wall 1111 and the second inner side wall 1112 are both concave arc surfaces, and the first side surface 2111 and the second side surface 2112 are both convex arc surfaces, so as to facilitate the disengagement of the first limiting part 11 and the second limiting part 21 from the opposite two directions.

[0050] In an embodiment of this implementation, please refer to Figures 4 to 6 The groove body 111 has a first outer side wall 1113 and a second outer side wall 1114 opposite in the circumferential direction. The first outer side wall 1113 is inclined relative to the bottom plate 20, so that the protrusion 211 can slide along the first outer side wall 1113 into the groove body 111, and / or the second outer side wall is inclined relative to the bottom plate 20, so that the protrusion 211 can slide along the first outer side wall 1113 into the groove body 111. In this way, when transportation is needed, the protrusion 211 can be slid along the first outer side wall 1113 or the second outer side wall 1114 into the groove body 111 by rotating the bottom plate 20, so that the relative rotation freedom of the bottom plate 20 and the rotating plate 10 is limited, thereby facilitating subsequent assembly.

[0051] In an embodiment of this implementation, please refer to Figures 4 to 6 The groove body 111 has a first end surface 1115, and the protrusion 211 has a second end surface 2115. The first end surface 1115 and the second end surface 2115 are both parallel to the bottom plate 20. Specifically, the first end surface 1115 is closer to the bottom plate 20 than the second end surface 2115. The first end surface 1115 is a semicircular surface, and the inner side of the first end surface 1115 is connected with the first inner side wall 1111 and the outer side wall. The outer side of the first end surface 1115 is connected with the first outer side wall 1113 and the second outer side wall 1114. The two sides of the second end surface 2115 are connected with the first side surface 2111 and the second side surface 2112, respectively. In this way, the protrusion 211 can slide along the first end surface 1115 into the groove body 111 or out of the groove body 111.

[0052] In an embodiment of this implementation, please refer to Figure 2 , Figure 3 and Figure 7 , Figure 7 is Figure 1The cross-sectional view of the connecting piece 200 and the rotating chassis assembly 100 passing through the cross section of the first limiting part 11 and the second limiting part 21. The rotating chassis assembly 100 comprises a locking piece 30, the rotating plate 10 is provided with a shaft hole 13, the locking piece 30 is rotationally fitted in the shaft hole 13, and one end of the locking piece 30 abuts against the side of the rotating plate 10 away from the bottom plate 20, and the other end of the locking piece 30 is connected with the bottom plate 20. In this way, the locking piece 30 can connect the bottom plate 20 and the rotating plate 10 while providing the bottom plate 20 and the rotating plate 10 with the freedom of relative rotation.

[0053] In this embodiment, the locking piece 30 is configured as a screw, the head of the screw abuts against the side of the rotating plate 10 away from the bottom plate 20, the rod part of the screw is rotationally fitted in the shaft hole 13, and the end of the rod part away from the head is threadedly fitted in the threaded hole 23 on the bottom plate 20. In this way, the structure of the locking piece 30 is relatively simple, and the assembly and disassembly of the bottom plate 20 and the rotating plate 10 are facilitated.

[0054] In one embodiment of this embodiment, please refer to Figure 5 , the side of the rotating plate 10 facing the bottom plate 20 is formed with a boss 14, the shaft hole 13 is formed in the boss 14, and the first limiting part 11 is connected with the outer circumferential surface of the boss 14. Specifically, in this embodiment, the first limiting part 11 is configured as a groove body 111. In this way, the first limiting part 11 and the boss 14 can be connected to form a whole with higher strength, reducing the risk of failure of the cooperation between the first limiting part 11 and the second limiting part 21.

[0055] In one embodiment of this embodiment, please refer to Figure 5 , the side of the bottom plate 20 facing the rotating plate 10 is provided with a counterbore 24, and the boss 14 is accommodated in the counterbore 24. In this way, the connection strength of the bottom plate 20 and the rotating plate 10 can be improved, which is conducive to improving the supporting capacity of the mounting bracket.

[0056] In one embodiment of this embodiment, please refer to Figure 3 , the hollow part 12 is provided with a first through hole 121, the mounting part 22 is provided with an avoiding slot 221, the bottom wall of the avoiding slot 221 is provided with a second through hole 222, the avoiding slot 221 is used for accommodating one end of the connecting piece 200, and the first through hole 121 and the second through hole 222 are used for allowing the connecting piece 200 to pass through. On the one hand, one end of the connecting piece 200 can be accommodated in the avoiding slot 221, so that the connecting piece 200 does not interfere with the rotating plate 10 when the bottom plate 20 and the rotating plate 10 rotate relative to each other, and on the other hand, the connecting piece 200 can pass through the first through hole 121 and the second through hole 222 and be connected with the mounting piece, facilitating the user to assemble.

[0057] In the embodiment, the connecting piece 200 is configured as a screw, the head of the screw is accommodated in the avoiding groove 221, the rod of the screw passes through the first through hole 121 and the second through hole 222 in sequence, and the end of the rod away from the head is used for threadedly cooperating with the mounting piece.

[0058] In one embodiment of the embodiment, referring to Figure 2 and Figure 3 The rotating base assembly 100 comprises a cover plate 40, the bottom plate 20 is fixedly connected to the bottom side of the cover plate 40, the cover plate 40 is provided with a third through hole 41 opposite to the second through hole 222, and the third through hole 41 is used for passing through the connecting piece 200. Specifically, the top end of the connecting piece 200 is exposed on the top side of the cover plate 40 by extending out of the third through hole 41, so as to be connected with the mounting piece.

[0059] The embodiments of the utility model are explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model. In addition, the embodiments and the features in the embodiments of the utility model can be combined with each other without conflict.

Claims

1. A rotating platter assembly (100) characterized by, The utility model relates to a rotatable display device, comprising: a rotating plate (10) provided with a first limiting part (11) and a hollow part (12) and arranged on a supporting surface; a bottom plate (20) rotationally connected with the rotating plate (10) and provided with a second limiting part (21) and a mounting part (22); when the bottom plate (20) rotates to a first position relative to the rotating plate (10), the second limiting part (21) cooperates with the first limiting part (11), the rotating plate (10) and the bottom plate (20) are limited in relative rotation, the hollow part (12) is opposite to the mounting part (22) to allow a connecting piece (200) to extend from the hollow part (12) into the mounting part (22), and the connecting piece (200) is used for connecting a mounting piece for mounting a display; when the bottom plate (20) rotates from the first position to a second position relative to the rotating plate (10), the second limiting part (21) is disengaged from the first limiting part (11), and the bottom plate (20) and the rotating plate (10) restore the freedom of relative rotation.

2. The rotating platen assembly (100) of claim 1, wherein, One of the first limiting part (11) and the second limiting part (21) is configured as a groove (111), and the other of the first limiting part (11) and the second limiting part (21) is configured as a protrusion (211); When the bottom plate (20) is at the first position relative to the rotating plate (10), the protrusion is located in the groove (111); when the bottom plate (20) is at the second position relative to the rotating plate (10), the protrusion is located outside the groove (111).

3. The rotating platen assembly (100) of claim 2, wherein, The groove (111) has a first inner side wall (1111) and a second inner side wall (1112) opposite in the circumferential direction, and the protrusion has a first side surface (2111) and a second side surface (2112) opposite to each other; when the protrusion is located in the groove (111), the first inner side wall (1111) and the first side surface (2111) abut against each other, and the second inner side wall (1112) and the second side surface (2112) abut against each other.

4. The rotating platen assembly (100) of claim 3, wherein, The first inner side wall (1111) is an inner concave curved surface, the first side surface (2111) is an outer convex curved surface, and / or the second inner side wall (1112) is an inner concave curved surface, and the second side surface (2112) is an outer convex curved surface.

5. The rotating platen assembly (100) of claim 3, wherein, The groove (111) has a first outer side wall (1113) and a second outer side wall (1114) opposite in the circumferential direction; the first outer side wall (1113) is inclined relative to the bottom plate (20) to allow the protrusion (211) to slide along the first outer side wall (1113) into the groove (111); and / or the second outer side wall is inclined relative to the bottom plate (20) to allow the protrusion (211) to slide along the first outer side wall (1113) into the groove (111).

6. The rotating platen assembly (100) of claim 5, wherein, The groove (111) has a first end surface (1115), and the protrusion (211) has a second end surface (2115); the first end surface (1115) and the second end surface (2115) are parallel to the bottom plate (20).

7. The rotating platen assembly (100) of claim 1, wherein, The rotating base plate assembly (100) comprises a locking piece (30), the rotating plate (10) is provided with a shaft hole (13), the locking piece (30) is rotationally fitted in the shaft hole (13), one end of the locking piece (30) abuts against one side of the rotating plate (10) away from the base plate (20), and the other end of the locking piece (30) is connected with the base plate (20).

8. The rotating platen assembly (100) of claim 7, wherein, One side of the rotating plate (10) facing the base plate (20) is formed with a boss (14), the shaft hole (13) is formed in the boss (14), and the first limiting part (11) is connected with the outer peripheral surface of the boss (14).

9. The rotating platen assembly (100) of claim 1, wherein, The hollow part (12) is provided with a first through hole (121), the mounting part (22) is provided with an avoiding groove (221), a bottom wall of the avoiding groove (221) is provided with a second through hole (222), the avoiding groove (221) is used for accommodating one end of the connecting piece (200), and the first through hole (121) and the second through hole (222) are used for allowing the connecting piece (200) to pass through.

10. A mounting bracket, characterized by The rotating base plate assembly (100) according to any one of claims 1 to 9, a connecting piece (200) and a mounting piece, wherein the connecting piece (200) is arranged on the mounting part (22) and connected with the mounting piece, and the mounting piece is used for mounting a display.

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