Middle frame assembly and electronic equipment

Abstract

The invention provides a middle frame assembly and electronic equipment, the middle frame assembly comprises a first plastic part, in a first direction, the edge of the first plastic part protrudes to form a first area and a second area in sequence, and the first direction is the thickness direction of the middle frame assembly; the second plastic part surrounds the periphery of the first plastic part; a first protrusion is arranged on the side wall, facing the second plastic part, of the first plastic part in the second direction, and the second direction is perpendicular to the first direction. A hole is formed among the first area, the second area, the second plastic part and the first protrusion. The middle frame assembly has good impact resistance, and can improve the protection capability of the screen assembly.

Description

Technical Field

[0001] The present application relates to the field of electronic devices, and in particular to a middle frame assembly and an electronic device. Background Art

[0002] The middle frame component of an electronic device usually refers to a structural component inside an electronic product, which provides support, protection and fixation for the screen component and other components of the electronic device. The impact resistance of the middle frame component plays a vital role in electronic devices, which is directly related to the durability, safety and reliability of the device. In today's fast-paced living environment, electronic devices are often faced with the risk of damage to the screen component due to various accidental falls and collisions. At this time, the impact resistance of the middle frame component is particularly critical.

[0003] In view of this, how to ensure the impact resistance of the middle frame assembly of electronic equipment is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present application provides a middle frame assembly and an electronic device with good impact resistance, which can improve the protection capability of the screen assembly.

[0005] In a first aspect, a middle frame assembly is provided, comprising: a first plastic part, wherein edge protrusions of the first plastic part sequentially form a first area and a second area in a first direction, and the first direction is a thickness direction of the middle frame assembly; a second plastic part surrounding the outer periphery of the first plastic part; a first protrusion is arranged on a side wall of the first plastic part facing the second plastic part in a second direction, and the second direction is perpendicular to the first direction; and gaps are provided between the first area, the second area, the second plastic part and the first protrusion.

[0006] The pore has a function similar to a cushioning airbag. When the electronic device falls, it can buffer the transmission process of the impact load from the second plastic part to the first area in the first plastic part, thereby reducing the impact load in the first area with lower structural strength. In addition, the first protrusion can weaken the relative movement between the second plastic part and the first plastic part, and transmit the impact load to the area with higher structural strength in the first plastic part, further reducing the impact load in the first area with lower structural strength. The above implementation is conducive to avoiding structural damage in the first area, improving the impact resistance of the middle frame assembly, and thus improving the protection of the middle frame assembly to the screen assembly.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the pore is configured to deform when the first plastic part and / or the second plastic part is subjected to an impact load.

[0008] When the electronic device falls, the second plastic part and the first plastic part can move relative to each other, causing the pore to deform. This deformation process can provide force buffering for the first area, reduce the impact load there, avoid structural damage to the first area with low structural strength, and improve the impact resistance of the middle frame assembly.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the first area and the second area of ​​the first plastic part form a accommodating cavity with an opening, and the accommodating cavity is used to accommodate the screen assembly; wherein, the projection of the bottom surface of the accommodating cavity on a plane parallel to the first direction partially overlaps with the projection of the first protrusion and the mating surface of the second plastic part on the plane parallel to the first direction.

[0010] Through the above-mentioned implementation mode, the first protrusion can specifically strengthen the structural strength of the transition between the first area and the area with higher structural strength, which is beneficial to avoiding deformation of the first area and the accommodating cavity due to falling impact; further, when the electronic device falls, the impact load can be transmitted to the area with higher structural strength via the first protrusion, which is beneficial to avoiding structural damage to the first area and improving the impact resistance of the middle frame assembly.

[0011] In combination with the first aspect, in certain implementations of the first aspect, in the second direction, a second protrusion is provided on a side wall of the second plastic part facing the first plastic part.

[0012] Through the above implementation, when the electronic device falls, the impact load can be transmitted to the area with higher structural strength in the first plastic part through the second protrusion, which is beneficial to improving the impact resistance of the middle frame assembly; further, the existence of the second protrusion can provide a buffer for the relative movement between the first plastic part and the second plastic part, avoiding the separation of the two, which is beneficial to improving the protection of the middle frame assembly to the screen assembly.

[0013] In combination with the first aspect, in some implementations of the first aspect, it also includes a middle frame; in the first direction, the first plastic part includes a third area connected to the first area; and the middle frame is covered and partially embedded in the third area.

[0014] The portion of the middle frame located in the third area can engage and support the plastic therein, so that the third area has a higher structural strength, which is beneficial to provide protection for the screen assembly.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the first protrusion of the first plastic part and the second plastic part are clearance-matched, and the maximum clearance is 0.05 mm.

[0016] The first plastic part and the second plastic part are two independent parts. The clearance matching mode with the minimum clearance of 0 and the maximum clearance of 0.05 mm can facilitate the installation and removal of the first plastic part and the second plastic part.

[0017] In combination with the first aspect, in certain implementations of the first aspect, a minimum value of a height of the pore in the first direction is greater than or equal to 0.8 mm.

[0018] In combination with the first aspect, in certain implementations of the first aspect, a minimum value of a width of the pore in the second direction is greater than or equal to 0.3 mm.

[0019] In combination with the first aspect, in certain implementations of the first aspect, in the second direction, a minimum value of a width between the first region and the first protrusion is greater than or equal to 1.0 mm.

[0020] In combination with the first aspect, in certain implementations of the first aspect, in the first direction, a distance between an edge of the first protrusion facing the opening of the accommodating cavity and a bottom surface of the accommodating cavity is 0.5 mm to 0.8 mm.

[0021] In combination with the first aspect, in certain implementations of the first aspect, in the first direction, a distance between an edge of the first protrusion in a direction away from the opening of the accommodating cavity and a bottom surface of the accommodating cavity is 0.5 mm to 0.8 mm.

[0022] In combination with the first aspect, in certain implementations of the first aspect, in the first direction, the distance between the edge of the first protrusion toward the opening of the accommodating cavity and the bottom surface of the accommodating cavity is the same as the distance between the edge of the first protrusion away from the opening of the accommodating cavity and the bottom surface of the accommodating cavity.

[0023] Through the above implementation, the ability of the first protrusion to transfer the impact load to the area with higher structural strength can be further improved, which is more conducive to avoiding structural damage in the first area and improving the impact resistance of the middle frame assembly.

[0024] In combination with the first aspect, in certain implementations of the first aspect, the second protrusion of the second plastic part is clearance-matched with the first plastic part, and the maximum clearance is 0.05 mm.

[0025] In combination with the first aspect, in certain implementations of the first aspect, in the first direction, a minimum value of a height between the second protrusion and the mating surface of the first plastic part is greater than or equal to 0.4 mm.

[0026] In a second aspect, an electronic device is provided, comprising a middle frame assembly as described in the first aspect or any implementation of the first aspect.

[0027] In combination with the second aspect, in certain implementations of the second aspect, the electronic device further includes a screen assembly and a bottom plate, the middle frame assembly is located between the screen assembly and the bottom plate, and the screen assembly, the middle frame assembly and the bottom plate are connected to form a closed structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0029] Figure 2 It is a schematic exploded diagram of an electronic device provided in an embodiment of the present application.

[0030] Figure 3 The middle frame assembly provided in the embodiment of the present application is Figure 1 Schematic diagram of a partial enlargement of the cross section along the BB′ direction.

[0031] Figure 4 Another middle frame component provided in the embodiment of the present application Figure 1 Schematic diagram of a partial enlargement of the cross section along the BB′ direction.

[0032] Figure 5 yes Figure 4 A partial enlarged schematic diagram of the C area in the middle.

[0033] Figure 6 It is a top view schematic diagram of the middle frame provided in an embodiment of the present application.

[0034] Figure 7 It is a cross-sectional schematic diagram of the middle frame assembly provided in an embodiment of the present application.

[0035] Figure 8 yes Figure 7 A partially enlarged schematic diagram of the cross-section of the middle frame assembly in the CC′ direction. DETAILED DESCRIPTION

[0036] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0037] In the description of this application, it should be noted that the terms "first", "second", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0038] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0039] The directional terms mentioned in the embodiments of the present application, such as "up", "down", "left", "right", "inside", "outside", etc., are only referenced to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying 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 on the embodiments of the present application. In addition, unless otherwise specified in the present application, the "multiple" described in the present application refers to two or more. "Vertical" is not vertical in the strict sense, but is within the allowable error range. "Parallel" is not parallel in the strict sense, but is within the allowable error range.

[0040] In the description of the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0041] In the embodiments of the present application, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] The present application relates to a middle frame assembly of an electronic device. The electronic device may be a mobile phone, a tablet computer, a tablet computer accessory, a wearable device, a vehicle-mounted device, an augmented reality (AR) / virtual reality (VR) device, a laptop computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA) and other mobile terminals, or may also be a digital camera, a SLR camera / micro-single camera, a sports camera, a PTZ camera, a drone and other professional shooting equipment. The embodiments of the present application do not specifically limit the specific form of the electronic device.

[0043] 80% of electronic product damage comes from falling and collision. When a fall occurs, the screen assembly of the electronic device is usually more vulnerable to damage due to material differences. As a component that supports and protects the screen assembly, the impact resistance of the middle frame assembly is crucial. Therefore, R&D personnel considered improving the impact resistance of the middle frame assembly to provide better drop protection for the screen assembly.

[0044] Figure 1 It is a schematic structural diagram of an electronic device provided in an embodiment of the present application. Figure 2 is a schematic exploded diagram of an electronic device provided in an embodiment of the present application. Figure 1 and Figure 2 An electronic device may generally include a screen assembly 1, a middle frame assembly 2 and a bottom plate 3, wherein the middle frame assembly 2 is located between the screen assembly 1 and the bottom plate 3, and the screen assembly 1, the middle frame assembly 2 and the bottom plate 3 can be connected to form a closed structure.

[0045] The middle frame assembly 2 may include a middle frame 21, a first plastic part 22 and a second plastic part 23. The first plastic part 22 may be wrapped around the periphery of the middle frame 21, and a portion of the middle frame 21 is embedded in the first plastic part 22. The second plastic part 23 surrounds the periphery of the first plastic part 22, or in other words, the first plastic part 22 is located between the screen assembly 1 and the second plastic part 23.

[0046] In order to facilitate the description of the following embodiments, an O-xyz coordinate system is established for the middle frame assembly and the electronic device, wherein the thickness direction of the middle frame assembly or the electronic device is defined as the z-axis direction, the width direction is defined as the x-axis direction, and the length direction is defined as the y-axis direction.

[0047] In some scenarios, the combination of the middle frame 21 and the first plastic part 22 may be called a "face shell", and the second plastic part 23 may be called a "middle frame", but it should be understood that different definitions of the component names do not affect their structure and function, nor do they limit the scope of protection of this application.

[0048] The screen component 1 can be a rigid screen or a flexible screen, and can use a liquid crystal display (LCD), an organic light-emitting diode (OLED) display or a light-emitting diode (LED) display, etc.

[0049] The middle frame 21 may be made of metal, such as aluminum alloy, and the forming process of the middle frame 21 may be stamping of aluminum alloy sheets. In practical applications, the metal material and forming process of the middle frame 21 may be selected based on actual conditions. Compared with the die-casting process, the stamping process has lower costs, higher quality of formed parts, and a wider range of material options, provided that the obtained middle frame can meet the strength requirements.

[0050] The first plastic part 22 and the second plastic part 23 can be made of plastic material, and the materials of the two can be the same. The material types of the first plastic part 22 and the second plastic part 23 can be various. In practical applications, those skilled in the art can choose according to specific needs. For example, the material can be one or more of polyphthalamide (PPA), polyamide (PA), polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), polyetherether ketone (PEEK), polycarbonate (PC), etc.

[0051] According to actual needs, the material of the bottom plate 3 can be metal, plastic, ceramic, etc., which is not limited in this application.

[0052] Continue to refer Figure 1 and Figure 2 , when electronic equipment is connected Figure 1 When falling in direction A, the corner usually contacts the falling surface first. Possible situations include but are not limited to: on the side facing the screen assembly 1, the first corner 231 where the first plastic part 22 and the second plastic part 23 are adjacent to each other contacts the falling surface first; or, the second corner 232 where the bottom plate 3 and the second plastic part 23 are adjacent to each other contacts the falling surface first.

[0053] The number of the first corners 231 and the second corners 232 in the electronic device corresponds to each other and are multiple. For example, there may be four first corners 231 and four second corners 232 respectively.

[0054] Figure 3 A middle frame assembly provided in an embodiment of the present application Figure 1 A partial schematic diagram of the cross section along the BB′ direction in FIG. In some possible electronic device structures, such as Figure 3As shown, the screen assembly 1 may include a display module 12 and a protective top cover 11 stacked in sequence in the first direction z. The first plastic part 22 and the second plastic part 23 of the middle frame assembly 2 are two independent parts, and there is a space between them, which can be used to accommodate the electronic part 4, and the electronic part 4 can be a flexible printed circuit (FPC) or other parts required by the electronic device.

[0055] The first plastic part 22 of the middle frame assembly 2 includes, in the first direction z, i.e., the direction toward the screen assembly 1, or in the thickness direction of the middle frame assembly 2, a third area 223 located between the screen assembly 1 and the bottom plate 3, a first area 222 located between the screen assembly 1 and the second plastic part 23, and a second area 221 arranged around the periphery of the screen assembly 1, and the three are connected in sequence.

[0056] The third region 223 has a large thickness in the first direction z, and can be embedded with metal parts such as the middle frame 21 and screws (not shown in the figure), and has a high structural strength. Accordingly, it has strong impact resistance and can support the screen assembly; the second region 221 is arranged around the circumferential side wall of the protective top cover 11 in the screen assembly 1, and can protect the screen assembly 1; and the first region 222 surrounds the circumferential side wall of the display module 12 in the screen assembly 1, and is located between the third region 223 and the second region 221, playing a transition and taking over role, has a small thickness in the first direction z, a low structural strength, and correspondingly weak impact resistance.

[0057] The screen assembly 1 is accommodated in the accommodating cavity formed by the middle frame assembly 2, or in other words, the screen assembly 1 is accommodated in the accommodating cavity formed by the first plastic part 22; the edge of the first plastic part 22 is raised relative to the third area 223, and surrounds the side wall of the screen assembly 1, that is, the first area 222 and the second area 221 surround the side wall of the screen assembly 1, thereby providing support and protection for the screen assembly 1.

[0058] However, when the electronic device falls, especially when the first corner 231 first contacts the falling surface, the second plastic part 23 and the first plastic part 22 are subjected to force and move relative to each other, resulting in collision or even separation. The impact load is transmitted from the second plastic part 23 to the first area 222 of the first plastic part 22. Since the structural strength of this area is weak, the middle frame assembly 2 is difficult to effectively support and protect the screen assembly 1, which can easily cause the screen assembly 1 to be damaged by the impact of the fall.

[0059] Based on the above situation, the embodiment of the present application provides a middle frame assembly with good impact resistance, which can improve the protection capability of the screen assembly of the electronic device and help avoid damage to the screen caused by falling.

[0060] Figure 4This is a middle frame component provided by the embodiment of the present application. Figure 1 A partial schematic diagram of the cross section along the BB′ direction. Figure 4 As shown, the middle frame assembly 2 includes a first plastic part 22, wherein the edge protrusions of the first plastic part 22 sequentially form a first area 222 and a second area 221 in a first direction, and the first direction is the thickness direction of the middle frame assembly 2; a second plastic part 23 surrounding the outer periphery of the first plastic part 22; a first protrusion 225 is provided on the side wall of the first plastic part 22 facing the second plastic part 23 in the second direction, and the second direction is perpendicular to the first direction; and a gap 201 is provided between the first area 222, the second area 221, the second plastic part 23 and the first protrusion 225.

[0061] The second direction can be as follows Figure 1 The BB′ direction is shown in FIG.

[0062] At the corner of the electronic device, a gap 201 is formed between the first plastic part 22 and the second plastic part 23. The gap 201 has a function similar to a cushioning airbag. When the electronic device falls, it can buffer the transmission process of the impact load from the second plastic part 23 to the first area 222 of the first plastic part 22, thereby reducing the impact load at the first area 222 with lower structural strength. In addition, the first protrusion 225 can weaken the relative movement between the second plastic part 23 and the first plastic part 22, and transmit the impact load to the area with higher structural strength in the first plastic part 22, further reducing the impact load at the first area 222 with lower structural strength. Through the above embodiment, it is helpful to avoid structural damage to the first area 222, improve the impact resistance of the middle frame assembly 2, and further improve the protection of the middle frame assembly 2 to the screen assembly.

[0063] It is understandable that there are also a plurality of first protrusions 225 on the first plastic part 22 , and the number of the first protrusions 225 is the same as the number of the first corners 231 , or the number of the second corners 232 .

[0064] Optionally, the pore 201 is configured to deform when the first plastic part 22 and / or the second plastic part 23 is subjected to an impact load.

[0065] When the electronic device falls, especially when the first corner 231 first contacts the falling surface, the second plastic part 23 and the first plastic part 22 move relative to each other, causing the pore 201 to deform. This deformation process can provide force buffering for the first area 222, reduce the impact load there, avoid structural damage to the first area 222, and improve the impact resistance of the middle frame assembly.

[0066] Figure 5 yes Figure 4 A partial enlarged schematic diagram of the C region in the middle. Optionally, as Figure 5 As shown, the minimum value of the height d1 of the pore 201 in the first direction is greater than or equal to 0.8 mm; the minimum value of the width d2 in the second direction is greater than or equal to 0.3 mm.

[0067] Optionally, in the second direction, a minimum value of a width d3 between the first region 222 and the first protrusion 225 is greater than or equal to 1.0 mm.

[0068] In the second direction, the presence of the first protrusion 225 can increase the width of the first area 222 at the first corner 231 to enhance its structural strength, thereby enhancing the impact resistance of the middle frame assembly, which is beneficial to improving the protection of the screen assembly of the electronic device.

[0069] Optionally, the first area 222 and the second area 221 of the first plastic part 22 form a receiving cavity 224 with an opening, which is used to receive the screen assembly 1; wherein the projection of the bottom surface 226 of the receiving cavity 224 on a plane parallel to the first direction partially overlaps with the projection of the first protrusion 225 and the mating surface 202 of the second plastic part 23 on a plane parallel to the first direction.

[0070] The accommodating cavity 224 can be used to accommodate the screen assembly of the electronic device. In the above embodiment, the extended plane of the bottom surface 226 of the accommodating cavity 224 can intersect with the first protrusion 225 and the matching surface 202 of the second plastic part 23, that is, in the first direction, the first protrusion 225 spans the bottom surface 226 of the accommodating cavity 224.

[0071] Based on this, the first protrusion 225 can specifically strengthen the structural strength of the transition between the first area 222 and the third area 223, which is beneficial to avoid deformation of the first area 222 and the accommodating cavity 224 due to the impact of falling; in addition, when the electronic device falls and the first corner 231 first contacts the falling surface, the impact load can be transmitted to the third area 223 with higher structural strength via the first protrusion 225, which is beneficial to avoid structural damage to the first area 222, improve the impact resistance of the middle frame assembly, and thereby improve the protection of the middle frame assembly to the screen assembly.

[0072] Optionally, the first protrusion 225 of the first plastic part 22 may be loosely matched with the second plastic part 23 , and the maximum clearance is 0.05 mm.

[0073] The first plastic part 22 and the second plastic part 23 are two independent parts. The clearance matching mode with the minimum clearance of 0 and the maximum clearance of 0.05 mm can facilitate the installation and removal of the first plastic part 22 and the second plastic part 23.

[0074] Optionally, in the first direction, the distance d4 between the edge of the first protrusion 225 toward the opening of the accommodating cavity 224 and the bottom surface 226 of the accommodating cavity 224 can be 0.5 mm to 0.8 mm; the distance d5 between the edge of the first protrusion 225 away from the opening of the accommodating cavity 224 and the bottom surface 226 of the accommodating cavity 224 can be 0.5 mm to 0.8 mm.

[0075] Further, in the first direction, a distance d4 between an edge of the first protrusion 225 toward the opening of the accommodating cavity 224 and the bottom surface 226 of the accommodating cavity 224 is the same as a distance d5 between an edge of the first protrusion 225 away from the opening of the accommodating cavity 224 and the bottom surface 226 of the accommodating cavity 224 .

[0076] Through the above implementation, the first protrusion 225 has a better ability to transfer the impact load to the third area 223, and the impact resistance of the middle frame assembly and the protection of the screen assembly can be further improved.

[0077] Return to reference Figure 4 Optionally, in the second direction, the second plastic part 23 is provided with a second protrusion 233 on the side wall facing the first plastic part 22 .

[0078] Through the above-mentioned embodiment, when the electronic device falls and the second corner 232 first contacts the falling surface, the impact load can be transmitted to the third area 223 with higher structural strength in the first plastic part 22 via the second protrusion 233, which is beneficial to improving the impact resistance of the middle frame assembly; in addition, the presence of the second protrusion 233 can slow down the relative movement between the first plastic part 22 and the second plastic part 23, avoiding the separation of the two, which is beneficial to improving the protection of the middle frame assembly to the screen assembly.

[0079] It is understandable that there are also multiple second protrusions 233 on the second plastic part 23 , and the number of the second protrusions 233 is the same as the number of the first corners 231 , or the number of the second corners 232 .

[0080] Optionally, the second protrusion 233 of the second plastic part 23 may be loosely matched with the first plastic part 22 , and the maximum clearance is 0.05 mm.

[0081] Optionally, in the first direction, a minimum value of a height d6 between the second protrusion 233 and the matching surface 203 of the first plastic part 22 is greater than or equal to 0.4 mm.

[0082] In some embodiments, there is space between the first plastic part 22 , the second plastic part 23 , the first protrusion 225 , and the second protrusion 233 , and the space can be used to accommodate the electronic part 4 .

[0083] Optionally, the middle frame assembly provided in the embodiment of the present application may further include a middle frame, which is covered and partially embedded in the first plastic part.

[0084] Figure 6 Schematic diagram of a top view of the middle frame 21 provided in the embodiment of the present application. Figure 6 As shown, there is at least one opening 211 on the middle frame 21 for avoiding the screw column 227 .

[0085] In some related technologies, in order to provide space for the electronic component 4 or other components in the electronic device, such as the antenna (not shown in the figure), the screw column (not shown in the figure), etc., the proportion of the middle frame in the first plastic part 22 is usually insufficient, especially at the corners of the electronic device, the middle frame is too far away from the side of the accommodating cavity 224 in the second direction, resulting in insufficient protection of the screen assembly by the middle frame assembly when the electronic device falls.

[0086] Figure 7 The schematic cross-sectional view of the middle frame assembly provided in the embodiment of the present application along a plane parallel to the second direction. Figure 7 As shown, there is at least one screw column 227 on the second plastic part 23 corresponding to the at least one opening 211 on the middle frame 21 .

[0087] The screw column 227 can pass through the second plastic part 23 and extend into the first plastic part, and can accommodate fasteners such as screws for connecting electronic device components. Therefore, it can also be said that there is at least one screw column 227 on the first plastic part 22 corresponding to at least one opening 211 on the middle frame 21.

[0088] Figure 8 for Figure 7 A partially enlarged schematic cross-sectional view of the middle frame assembly along the CC′ direction. Figure 8 As shown, in the first direction, the first plastic part 22 may further include a third area 223 connected to the first area 222 , and the middle frame 21 is covered and partially embedded in the third area 223 .

[0089] The portion of the middle frame 21 located in the third area 223 can engage and support the plastic therein, so that the third area 223 has a higher structural strength. Figure 8 In addition to the combination method of the middle frame 21 and the first plastic part 22 shown in FIG, there may be other possible combination methods, so that the middle frame 21 and the first plastic part 22 are engaged with each other to form a region with higher structural strength.

[0090] In some embodiments, the middle frame 21 can extend to the vicinity of the screw column 227. Based on this, the proportion of the metal middle frame 21 in the first plastic part 22 can be increased as much as possible, so that the structural strength of the first plastic part is further improved, and accordingly, the protection capability of the middle frame assembly for the screen assembly is further improved.

[0091] An electronic device provided in an embodiment of the present application includes the middle frame assembly in any of the above embodiments.

[0092] Return to reference Figure 2 Optionally, the electronic device includes a screen assembly 1 and a bottom plate 3, the middle frame assembly 2 is located between the screen assembly 1 and the bottom plate 3, and the screen assembly 1, the middle frame assembly 2 and the bottom plate 3 are connected to form a closed structure.

[0093] The structure of the electronic device can refer to the electronic device structure mentioned above, and for the sake of brevity, it will not be repeated here.

[0094] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A middle frame assembly, characterized in that: include: A first plastic part (22), wherein in a first direction, the edge protrusions of the first plastic part (22) sequentially form a first area (222) and a second area (221), and the first direction is a thickness direction of the middle frame assembly (2); A second plastic part (23) surrounding the outer periphery of the first plastic part (22); A first protrusion (225) is provided on a side wall of the first plastic part (22) facing the second plastic part (23) in a second direction, wherein the second direction is perpendicular to the first direction; There is a gap (201) between the first area (222), the second area (221), the second plastic part (23) and the first protrusion (225).

2. The middle frame assembly according to claim 1, characterized in that: The pore (201) is configured to deform when the first plastic part (22) and / or the second plastic part (23) is subjected to an impact load.

3. The middle frame assembly according to claim 1 or 2, characterized in that: The first region (222) and the second region (221) of the first plastic part (22) form a receiving cavity (224) having an opening, and the receiving cavity (224) is used to receive the screen assembly (1); The projection of the bottom surface (226) of the accommodating cavity (224) on a plane parallel to the first direction partially overlaps with the projection of the matching surface (202) of the first protrusion (225) and the second plastic part (23) on a plane parallel to the first direction.

4. The middle frame assembly according to claim 1 or 2, characterized in that: In the second direction, the second plastic part (23) is provided with a second protrusion (233) on the side wall facing the first plastic part (22).

5. The middle frame assembly according to claim 1 or 2, characterized in that: Also included is a middle frame (21); In the first direction, the first plastic part (22) comprises a third area (223) connected to the first area (222); The middle frame (21) is covered and partially embedded in the third area (223).

6. The middle frame assembly according to claim 1 or 2, characterized in that: The first protrusion (225) of the first plastic part (22) and the second plastic part (23) are clearance-matched, and the maximum clearance is 0.05 mm.

7. The middle frame assembly according to claim 1 or 2, characterized in that: The minimum value of the height (d1) of the pore (201) in the first direction is greater than or equal to 0.8 mm.

8. The middle frame assembly according to claim 1 or 2, characterized in that: The minimum value of the width (d2) of the pore (201) in the second direction is greater than or equal to 0.3 mm.

9. The middle frame assembly according to claim 1 or 2, characterized in that: In the second direction, the minimum value of the width (d3) between the first region (222) and the first protrusion (225) is greater than or equal to 1.0 mm.

10. The middle frame assembly according to claim 3, characterized in that: In the first direction, the distance (d4) between the edge of the first protrusion (225) in the direction toward the opening of the accommodating cavity (224) and the bottom surface (226) of the accommodating cavity (224) is 0.5 mm to 0.8 mm; and / or, The distance (d5) between the edge of the first protrusion (225) in the direction away from the opening of the accommodating cavity (224) and the bottom surface (226) of the accommodating cavity (224) is 0.5 mm to 0.8 mm.

11. The middle frame assembly according to claim 3, characterized in that: In the first direction, the distance (d4) between the edge of the first protrusion (225) in the direction toward the opening of the accommodating cavity (224) and the bottom surface (226) of the accommodating cavity (224) is the same as the distance (d5) between the edge of the first protrusion (225) in the direction away from the opening of the accommodating cavity (224) and the bottom surface (226) of the accommodating cavity (224).

12. The middle frame assembly according to claim 4, characterized in that: The second protrusion (233) of the second plastic part (23) is clearance-matched with the first plastic part (22), and the maximum clearance is 0.05 mm.

13. The middle frame assembly according to claim 4, characterized in that: In the first direction, a minimum value of a height (d6) between the second protrusion (233) and the matching surface (203) of the first plastic part (22) is greater than or equal to 0.4 mm.

14. An electronic device, characterized in that: include: A middle frame assembly as claimed in any one of claims 1 to 13.

15. The electronic device according to claim 14, characterized in that: The electronic device further comprises a screen assembly (1) and a bottom plate (3), wherein the middle frame assembly is located between the screen assembly (1) and the bottom plate (3), and the screen assembly (1), the middle frame assembly and the bottom plate (3) are connected to form a closed structure.

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