Shell assembly

Abstract

The utility model relates to a shell assembly. The shell assembly comprises a back plate, a movable assembly and a supporting assembly. A first limiting groove is formed in the back plate. The movable assembly comprises a movable part and a chassis. The chassis is rotatably arranged on the side, provided with the first limiting groove, of the back plate, and a second limiting groove is formed in the side, facing the back plate, of the chassis. The second limiting groove is communicated with the first limiting groove to form a containing cavity, a movable part is arranged in the containing cavity, and when the chassis and the back plate rotate relatively, the side wall of the first limiting groove or the side wall of the second limiting groove extrudes the movable part, so that the movable part moves in the containing cavity; the supporting assembly is arranged on the side, away from the back plate, of the base plate. When the base plate and the back plate rotate relatively, the side wall of one of the first limiting groove and the second limiting groove extrudes the movable part so that the movable part can move in the other one of the first limiting groove and the second limiting groove. And at the moment, the chassis can be parked at a certain angle.

Description

Technical Field

[0001] The present application belongs to the technical field related to protective shells, and specifically relates to a shell assembly. Background Art

[0002] With the popularization of electronic products, mobile phones, tablets and other products have been integrated into people's lives. Accordingly, a housing with a bracket has become a demand point. However, the traditional housing with a bracket often cannot fix the position of the bracket support, and the user experience is poor. Utility Model Content

[0003] The present application provides a shell assembly to solve the technical problem that the support position of the bracket of the shell assembly cannot be fixed.

[0004] To solve the above technical problems, a technical solution adopted in the present application is: a shell assembly, which includes: a back plate, formed with a first limit groove; a movable assembly, including a movable part and a chassis, the chassis is rotatably arranged on the side of the back plate provided with the first limit groove, and the side of the chassis facing the back plate is formed with a second limit groove; the second limit groove is connected with the first limit groove to form a accommodating cavity, and the movable part is arranged in the accommodating cavity, when the chassis and the back plate rotate relative to each other, the side wall of the first limit groove or the second limit groove squeezes the movable part, thereby causing the movable part to move in the accommodating cavity; a support assembly is arranged on the side of the chassis away from the back plate.

[0005] According to one embodiment of the present application, the side wall of the first limiting groove and the side wall of the second limiting groove are arranged at an acute angle or an obtuse angle.

[0006] According to an embodiment of the present application, one of the first limiting groove and the second limiting groove includes a serrated groove.

[0007] According to one embodiment of the present application, the sawtooth groove includes an annular sawtooth groove, which is arranged in the outer peripheral area of ​​the chassis around the rotation axis of the chassis.

[0008] According to one embodiment of the present application, the other of the first limiting groove and the second limiting groove comprises a square groove, and the square groove extends along the radial direction of the annular serration groove.

[0009] According to one embodiment of the present application, the back plate is provided with a third limiting groove, the first limiting groove is formed on the bottom wall of the third limiting groove; and the chassis is clamped in the third limiting groove.

[0010] According to one embodiment of the present application, one of the inner side wall of the third limiting groove and the outer peripheral wall of the chassis is formed with a protrusion, and the other is formed with a recessed portion, and the protrusion is embedded in the recessed portion to install the chassis in the third limiting groove.

[0011] According to an embodiment of the present application, the depth of the accommodating cavity is greater than or equal to the dimension of the movable part along the depth direction of the accommodating cavity.

[0012] According to an embodiment of the present application, the movable member is a spherical movable body, and the groove width of the sawtooth groove is less than or equal to the diameter of the spherical movable body.

[0013] According to one embodiment of the present application, the movable assembly further includes a rotating member, the rotating member is disposed on the chassis, and the supporting assembly is rotatably connected to the rotating member in a vertical plane of the chassis.

[0014] According to one embodiment of the present application, a receiving groove is formed on a side of the chassis away from the back plate, and the supporting assembly includes: a magnetic member received in the receiving groove; a supporting ring, the rotating member being rotatably connected to the supporting ring, the supporting ring being receivable in the receiving groove, and a projection of the supporting ring on the chassis and a projection of the magnetic member on the chassis are not folded when the supporting ring is received in the receiving groove.

[0015] The beneficial effects of the present application are as follows: the shell assembly of the present application includes a back plate, a movable assembly and a support assembly. Among them, a first limiting groove is formed on the back plate. The movable assembly includes a movable part and a chassis. The chassis can be rotatably arranged on the side of the back plate provided with the first limiting groove, and a second limiting groove is formed on the side of the chassis facing the back plate. The second limiting groove is connected with the first limiting groove to form a accommodating cavity, and the movable part is arranged in the accommodating cavity. When the chassis and the back plate rotate relative to each other, the side wall of the first limiting groove or the second limiting groove squeezes the movable part, so that the movable part moves in the accommodating cavity; the support assembly is arranged on the side of the chassis away from the back plate. At this time, when the chassis and the back plate rotate relative to each other, the movable part needs to be squeezed by the side wall of one of the first limiting groove and the second limiting groove in order to move in the other of the first limiting groove and the second limiting groove. In this movement process, the movable part needs to overcome the friction generated between the first limiting groove, the second limiting groove and itself. Therefore, a certain damping feeling will be generated during the relative rotation between the chassis and the back plate, and then a certain resistance can be generated, which can achieve the chassis to stop at a certain angle relative to the back plate. Therefore, the user can adjust the chassis to the desired position according to their own needs and fix it, thereby improving the user's operating experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a housing assembly of the present application;

[0018] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of a housing assembly of the present application;

[0019] Figure 3 yes Figure 1 A schematic structural diagram of a chassis of an embodiment;

[0020] Figure 4 yes Figure 1 A schematic structural diagram of a support assembly of an embodiment;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of another embodiment of the shell of the present application. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] See also Figures 1 to 3 , Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a housing assembly of the present application; Figure 2 It is a schematic diagram of the exploded structure of an embodiment of a housing assembly of the present application; Figure 3 yes Figure 1 A schematic diagram of the structure of the chassis of an embodiment. An embodiment of the present application provides a shell assembly 10. Among them, the shell assembly 10 includes a back plate 11, a movable assembly 12 and a support assembly 13. Among them, a first limiting groove 111 is formed on the back plate 11. The movable assembly 12 includes a movable part 121 and a chassis 122. The chassis 122 is rotatably arranged on the side of the back plate 11 provided with the first limiting groove 111. And a second limiting groove 123 is formed on the side of the chassis 122 facing the back plate 11. The second limiting groove 123 is connected to the first limiting groove 111 to form a receiving cavity 124, and the movable part 121 is arranged in the receiving cavity 124. When the chassis 122 rotates relative to the back plate 11, the side wall of the first limiting groove 111 or the second limiting groove 123 squeezes the movable part 121, so that the movable part 121 moves in the receiving cavity 124.

[0027] It can be seen from the above structure that the chassis 122 can be rotatably arranged on the side of the back panel 11 where the first limit groove 111 is provided, and the support assembly 13 is arranged on the side of the chassis 122 away from the back panel 11. At this time, when the user uses the shell assembly 10, the user can adjust the supporting position of the support assembly 13 relative to the back panel 11 by rotating the chassis 122. At this time, the user will not be restricted by the supporting position of the support assembly 13 and can independently select any position, thereby improving the overall adaptability of the shell assembly 10.

[0028] Furthermore, the first limiting groove 111 on the back plate 11 and the second limiting groove 123 formed on the side of the chassis 122 facing the back plate 11 can play a certain role in giving way to the movable member 121, thereby facilitating the movement of the movable member 121. Specifically, the first limiting groove 111 and the second limiting groove 123 are connected to form a receiving cavity 124, and the movable member 121 reciprocates in the receiving cavity 124. At this time, when the chassis 122 and the back plate 11 rotate relative to each other, the side walls of the first limiting groove 111 and the second limiting groove 123 squeeze the movable member 121. At this time, the movable member 121 needs to overcome the friction between the first limiting groove 111, the second limiting groove 123 and itself. Therefore, a certain damping feeling will be generated during the relative rotation between the chassis 122 and the back plate 11, and a certain resistance can be generated, so that the chassis 122 can be stopped at a certain angle relative to the back plate 11. Therefore, the user can adjust the chassis 122 to the desired position according to his / her own needs and fix it, thereby improving the user's operating experience.

[0029] Preferably, the side wall of the first limiting groove 111 is set at an acute angle or an obtuse angle with the side wall of the second limiting groove 123. When the side wall of the first limiting groove 111 is parallel or at a right angle with the side wall of the second limiting groove 123, at this time, although the compression of the side wall of the first limiting groove 111 and the side wall of the second limiting groove 123 can make the chassis have a certain degree of damping in the process of rotating relative to the back plate, the damping force is relatively weak due to the compression of the side wall alone. Therefore, in the process of the chassis 122 rotating relative to the back plate 11, by setting the side wall of the first limiting groove 111 and the side wall of the second limiting groove 123 at an acute angle or an obtuse angle, the resistance to be overcome by the movable member 121 will also be relatively increased. At this time, the chassis 122 can be more stable when it stops at a certain angle relative to the back plate 11. Therefore, the user can adjust the chassis 122 to the required position according to their own needs and fix it at the position, thereby greatly improving the user's operating experience.

[0030] Optionally, one of the first limiting groove 111 and the second limiting groove 123 is a sawtooth groove 127. When the movable member 121 reciprocates in the accommodating cavity 124, a part of it is located in the sawtooth groove 127, and the other part is located in the other of the first limiting groove 111 and the second limiting groove 123. Since the sawtooth groove 127 generally has a crest 1231 and a trough 1232, when the chassis 122 and the back plate 11 rotate relative to each other, the movable part 121 often needs to cross the crest 1231 and the trough 1232 of the sawtooth groove 127 when moving in the first limiting groove 111, that is, the movable part 121 will squeeze the sawtooth groove 127 when moving in the first limiting groove 111, thereby crossing the waveform feature of the sawtooth groove 127, and in the process of the movable part 121 crossing the waveform feature of the sawtooth groove 127, the movable part 121 needs to overcome the friction generated between the first limiting groove 111, the sawtooth groove 127 and the movable part 121 itself. Therefore, when the user manually rotates the chassis 122, the user will feel the damping of the gap, so that the chassis 122 can be stopped at a specific angle, and the chassis 122 is also more stable when stopped at a specific angle, and the user can adjust the position of the chassis 122 to make the shell assembly 10 at the position required by the user.

[0031] Of course, in some other embodiments, the second limiting groove 123 may also be a wavy groove. Since the wavy groove often has the characteristics of wave crests and troughs, when the chassis 122 rotates relative to the back plate 11, the movable member 121 passes over the wave characteristics of the wavy groove. At this time, the movable member 121 still needs to overcome the friction between the three, so that the user can generate a certain damping feeling during the manual rotation of the chassis 122. At this time, the chassis 122 can be stopped at a certain angle, so that the housing assembly 10 can be in the position required by the user. Alternatively, the second limiting groove 123 may also be a groove of other shapes with relevant characteristics of wave crests and troughs, which is not limited here.

[0032] Further, when one of the first limiting groove 111 and the second limiting groove 123 is a sawtooth groove 127, the sawtooth groove 127 includes an annular sawtooth groove. The annular sawtooth groove is arranged in the outer peripheral area of ​​the chassis 122 around the rotation axis of the chassis 122. The other of the first limiting groove 111 and the second limiting groove 123 includes a square groove 126, and the square groove 126 extends along the radial direction of the annular sawtooth groove. During the rotation of the chassis 122 relative to the back plate 11, the inner wall of the annular serrated groove will squeeze the movable part 121. At this time, the movable part 121 reciprocates in the extension direction of the square groove 126, so that when the chassis 122 rotates relative to the back plate 11, the movable part 121 needs to overcome the friction of the square groove 126, the annular serrated groove and the movable part 121 itself each time it crosses a waveform feature. At this time, when the user manually rotates the chassis 122, the user will feel intermittent damping, so that the chassis 122 can be stopped at a certain angle.

[0033] Since the serration 127 is an annular serration 127, and the annular serration 127 is arranged on the outer periphery of the chassis 122 around the axis of rotation, during the rotation of the chassis 122, at any angle, the movable part 121 will squeeze the waveform characteristics of the serration 127, so that the chassis 122 can be stopped at any angle of 360°. The user can rotate the chassis 122 to any position according to his or her own needs, and the shell assembly 10 can remain stationary at this position.

[0034] Of course, in some other embodiments, the first limiting groove 111 may also be a slot of other shapes, which is not limited here. In other embodiments, the first limiting groove 111 may be arranged on the chassis 122 , and the second limiting groove 123 may be arranged on the back plate 11 .

[0035] In one embodiment of the present application, a third limiting groove 113 is provided on the back plate 11. The first limiting groove 111 is formed on the bottom wall of the third limiting groove 113. The chassis 122 is clamped in the third limiting groove 113. By providing the third limiting groove 113, the third limiting groove 113 can provide a certain amount of clearance space for the chassis 122, so that the chassis 122 can be clamped in the third limiting groove 113, thereby reducing the overall thickness of the housing assembly 10.

[0036] Specifically, during the installation of the chassis 122 on the back plate 11, one of the inner side wall of the third limiting groove 113 and the outer peripheral wall of the chassis 122 is formed with a protrusion 114, and the other is formed with a recessed portion 115, wherein the protrusion 114 is embedded in the recessed portion 115, so as to install the chassis 122 in the third limiting groove 113. By the cooperation between the protrusion 114 and the recessed portion 115, at this time, not only can the installation process of the chassis 122 be made simpler and more convenient, but also the connection between the back plate 11 and the chassis 122 can be made more stable. In addition, the design of the protrusion 114 and the recessed portion 115 is also simpler in production process, which can be realized by the production personnel by making corresponding grooves, thereby reducing a certain process flow and facilitating production.

[0037] Optionally, a protrusion 114 is formed on the inner side wall of the third limiting groove 113, and a recess 115 is formed on the outer peripheral wall of the chassis 122. At this time, in the process of installing the chassis 122 in the third limiting groove 113, the protrusion 114 can be clamped in the recess 115 and a certain external force is applied to the chassis 122, and the chassis 122 can be installed on the back plate 11. Alternatively, a recess 115 is formed on the inner side wall of the third limiting groove 113, and a protrusion 114 is formed on the outer peripheral wall of the chassis 122. At this time, in the process of installing the chassis 122 in the third limiting groove 113, the protrusion 114 of the chassis 122 is aligned with the recess 115, and a certain external force is applied to the chassis 122 to achieve the installation between the back plate 11 and the chassis 122, which is convenient and quick to operate; and the chassis 122 can be rotatably connected with the back plate 11.

[0038] In other embodiments, the bottom plate 122 may be provided with a recessed portion 115, and the inner side wall of the third limiting groove 113 may be provided with a protruding portion 114. Alternatively, a structure is adopted to realize the rotation connection between the bottom plate 122 and the back plate 11.

[0039] In one embodiment of the present application, the movable member 121 is a spherical movable member, and the depth of the accommodating cavity 124 is greater than or equal to the dimension of the movable member 121 along the depth direction of the accommodating cavity 124. That is, the depth of the accommodating cavity 124 is greater than or equal to the diameter of the spherical movable member. At this time, the movable member 121 can be easily moved. In addition, the groove width of the sawtooth groove 127 needs to be less than or equal to the diameter of the spherical movable member. At this time, during the rotation of the chassis 122 relative to the back plate 11, the diameter of the spherical movable member is greater than or equal to the width of the sawtooth groove 127, and then the inner side wall of the sawtooth groove 127 will squeeze the spherical movable member. At this time, the spherical movable member can move flexibly in the extension direction of the square groove 126. At this time, during the rotation of the chassis 122, the spherical movable member will overcome the friction between the sawtooth groove 127, the square groove 126 and itself, so that a certain resistance can be generated during the rotation of the chassis 122 relative to the back plate 11, so that the housing assembly 10 can be stationary at a certain position.

[0040] It should be noted that the depth of the accommodating cavity 124 may be equal to the diameter of the spherical movable body, or the depth of the accommodating cavity 124 may be greater than the diameter of the spherical movable body, which only requires that the spherical movable body can reciprocate in the square groove 126 .

[0041] Furthermore, the diameter of the spherical movable body may be equal to the groove width of the sawtooth groove 127 , or the diameter of the spherical movable body may be slightly smaller than the groove width of the sawtooth groove 127 .

[0042] In addition, the movable body may also be a movable body of other shapes, for example, a square, an ellipsoid, etc., which is not limited here.

[0043] In one embodiment of the present application, the movable assembly 12 further includes a rotating member 125. The rotating member 125 is disposed on the chassis 122, and the support assembly 13 is rotationally connected to the rotating member 125 in a vertical plane of the chassis 122. At this time, the support assembly 13 can be rotationally connected to the chassis 122 through the rotating member 125 structure. By setting the rotating member 125, the process of opening and closing the support assembly 13 can be made more labor-saving. Specifically, the rotating member 125 can be a rotating hinge. Among them, the rotating hinge generally includes a first hinge part and a second hinge part, the first hinge part is fixed to the chassis 122, one end of the second hinge part is fixedly connected to the support assembly 13, and the other end is rotationally connected to the first hinge part. Therefore, in the process of opening and closing the support assembly 13, the opening and closing of the support assembly 13 can be achieved by rotating the second hinge part relative to the first hinge part. The method of using a rotating shaft hinge to realize the opening and closing of the support assembly 13 can help control the thickness of the shell assembly 10 to reduce the volume of the shell assembly 10.

[0044] Of course, in some other embodiments, the rotating member 125 may also be implemented in the form of a rotating shaft, or may also be implemented in other rotating ways, which is not limited here.

[0045] See also Figures 1 to 5 , Figure 4 yes Figure 1 A schematic structural diagram of a support assembly of an embodiment; Figure 5 It is a schematic diagram of the three-dimensional structure of another embodiment of the shell of the present application. In one embodiment of the present application, a receiving groove 116 is formed on the side of the chassis 122 away from the back plate 11. The support assembly 13 includes a magnetic member 131 and a support ring 132. Among them, the magnetic member 131 is accommodated in the receiving groove 116. The rotating member 125 is rotatably connected to the support ring 132. The support ring 132 can be accommodated in the receiving groove 116, and when the support ring 132 is received in the receiving groove 116, the projection on the chassis 122 and the projection of the magnetic member 131 on the chassis 122 are not folded. Specifically, during the user's use, the support ring 132 can play a certain supporting role on the shell assembly 10 and the electronic device on which the shell assembly 10 is installed, so that the user can place the electronic device on which the shell assembly 10 is installed at a suitable angle. The magnetic suction component 131 can be used to adsorb the shell component 10 and the electronic device installed with the shell component 10 to certain specific devices. For example, the electronic device installed with the shell component 10 can be adsorbed on a wireless charger for wireless charging of the electronic device. Of course, it can also be some other specific devices, which will not be described here one by one.

[0046] Furthermore, when the support ring 132 is received in the receiving groove 116, the projection of the support ring 132 on the chassis 122 does not overlap with the projection of the magnetic element 131 on the chassis 122. At this time, on the one hand, it can prevent the magnetic element 131 and the support ring 132 from interfering with each other and affecting the magnetic attraction effect of the magnetic element 131. On the other hand, it can also prevent the support ring 132 from protruding from the surface of the back plate 11, thereby causing the shell assembly 10 to be unable to be placed stably on a plane, affecting the user experience. Therefore, this structure can improve the flatness of the outer surface of the shell without affecting the magnetic attraction effect of the magnetic element 131.

[0047] Preferably, in some other embodiments, the magnetic attraction member 131 is a magnetic attraction block 1311 arranged at intervals, and the support ring 132 is provided with slots at positions corresponding to the magnetic attraction block 1311, and reinforcing ribs 1321 are formed between adjacent slots of the support ring 132. At this time, although the support ring 132 is provided with slots, the structural strength of the support ring 132 can be ensured due to the formation of reinforcing ribs 1321 between adjacent slots, so as to avoid damage to the support ring 132 due to weak structural strength during the user's use of the electronic device with the housing assembly 10, thereby affecting the service life of the housing assembly 10. Therefore, the magnetic attraction blocks 1311 arranged at intervals can improve the service life of the housing assembly 10 by forming reinforcing ribs 1321 between the support rings 132.

[0048] Of course, the magnetic attraction member 131 may also be a whole magnetic strip (not shown in the figure), in which case it is only necessary to open slots corresponding to the magnetic strip on the support ring 132, and there is no limitation here.

[0049] The housing assembly 10 in the present application can be used in a variety of electronic devices such as mobile phones and tablets, and is not limited here.

[0050] It should be noted that the terms "horizontal", "vertical" and the like do not mean that the components are absolutely horizontal or vertical, but can be slightly tilted; the terms "parallel", "vertical" and the like do not mean that the components are absolutely parallel or vertical, but can form a certain angle deviation. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In addition, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the present application is usually placed when used, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0051] It is to be understood that the meaning of "plurality" herein is at least two, such as two, three, etc., unless there is a special limitation. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. The term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0052] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A housing assembly, characterized in that: The housing assembly comprises: A back plate, formed with a first limiting groove; A movable component comprises a movable part and a chassis, wherein the chassis is rotatably arranged on a side of the back plate provided with the first limiting groove, and a second limiting groove is formed on a side of the chassis facing the back plate; the second limiting groove is connected with the first limiting groove to form an accommodating cavity, and the movable part is arranged in the accommodating cavity, and when the chassis and the back plate rotate relative to each other, the side wall of the first limiting groove or the second limiting groove squeezes the movable part, so that the movable part moves in the accommodating cavity; The supporting assembly is arranged on a side of the chassis away from the back plate.

2. The housing assembly according to claim 1, characterized in that: The side wall of the first limiting groove and the side wall of the second limiting groove are arranged at an acute angle or an obtuse angle.

3. The housing assembly according to claim 2, characterized in that: One of the first limiting groove and the second limiting groove includes a sawtooth groove.

4. The housing assembly according to claim 3, characterized in that: The sawtooth groove comprises an annular sawtooth groove which is arranged in the outer peripheral area of ​​the chassis around the rotation axis of the chassis.

5. The housing assembly according to claim 4, characterized in that: The other of the first limiting groove and the second limiting groove comprises a square groove, and the square groove extends along the radial direction of the annular sawtooth groove.

6. The housing assembly according to claim 1, characterized in that: The back plate is further provided with a third limiting groove, the first limiting groove is formed on the bottom wall of the third limiting groove; the chassis is clamped in the third limiting groove.

7. The housing assembly according to claim 6, characterized in that: One of the inner side wall of the third limiting groove and the outer peripheral wall of the chassis is formed with a protrusion, and the other is formed with a recessed portion, and the protrusion is embedded in the recessed portion to install the chassis in the third limiting groove.

8. The housing assembly according to claim 3, characterized in that: The depth of the accommodating cavity is greater than or equal to the dimension of the movable part along the depth direction of the accommodating cavity.

9. The housing assembly according to claim 3, characterized in that: The movable part is a spherical movable body, and the groove width of the sawtooth groove is less than or equal to the diameter of the spherical movable body.

10. The housing assembly according to claim 1, characterized in that The movable assembly further comprises a rotating member, which is arranged on the chassis, and the supporting assembly is rotatably connected to the rotating member in a vertical plane of the chassis.

11. The housing assembly according to claim 10, characterized in that: A receiving groove is formed on one side of the chassis away from the back plate, and the supporting assembly includes: A magnetic attraction member, accommodated in the accommodation groove; The support ring is rotatably connected to the rotating member, and the support ring can be accommodated in the accommodating groove. When the support ring is accommodated in the accommodating groove, the projection of the support ring on the chassis and the projection of the magnetic member on the chassis are not folded.

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