CN119815745A - Midframe components and electronic devices - Google Patents

Abstract

The present application provides a middle frame assembly and an electronic device, the middle frame assembly comprising: a first plastic part, in a first direction, the edge protrusions of the first plastic part sequentially form a first area and a second area, the first direction being the 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 the side wall of the first plastic part facing the second plastic part in the second direction, the second direction being perpendicular to the first direction; and a gap is provided between 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

Middle frame assembly and electronic equipment

Technical Field

The application relates to the field of electronic equipment, in particular to a middle frame assembly and electronic equipment.

Background

The middle frame component of the electronic device generally refers to a structural component inside the electronic product, which provides supporting, protecting and fixing functions for components such as a screen component of the electronic device. The impact resistance of the center assembly plays a critical role in the electronic device, which is directly related to the durability, safety and reliability of the device. In the current fast-paced living environment, the electronic device often risks damaging the screen assembly due to various accidental falls and collisions, and the impact resistance of the middle frame assembly is particularly critical.

In view of this, how to ensure the impact resistance of the middle frame assembly of the electronic device is a technical problem to be solved.

Disclosure of Invention

The application provides a middle frame component with good impact resistance and electronic equipment, which can improve the protection capability of a screen component.

The middle frame assembly comprises a first plastic part, wherein a first area and a second area are sequentially formed by edge protrusions of the first plastic part in a first direction, the first direction is the thickness direction of the middle frame assembly, the second plastic part surrounds the periphery of the first plastic part, first protrusions are arranged on the side wall, facing the second plastic part, of the first plastic part in a second direction, the second direction is perpendicular to the first direction, and gaps are formed among the first area, the second plastic part and the first protrusions.

The aperture has the function similar to a buffer air bag, and can buffer the impact load in the transmission process from the second plastic part to the first area in the first plastic part when the electronic equipment falls down, so that the impact load at the first area with lower structural strength is reduced. In addition, the first bulge can weaken the relative motion between the second plastic part and the first plastic part, and the impact load is conducted to the area with higher structural strength in the first plastic part, so that the impact load at the first area with lower structural strength is further reduced. Through the above-mentioned embodiment, be favorable to avoiding first regional structure damage, improve the impact resistance of middle frame subassembly, and then improve the protection dynamics of middle frame subassembly to the screen subassembly.

With reference to the first aspect, in certain implementations of the first aspect, the aperture is configured to deform when the first plastic piece and/or the second plastic piece is subjected to an impact load.

When the electronic equipment falls, the second plastic part and the first plastic part can generate relative motion, so that the holes are deformed. The deformation process can provide stress buffering for the first area, reduce impact load born by the first area, avoid structural damage of the first area with lower structural strength, and improve the impact resistance of the middle frame assembly.

With reference to the first aspect, in certain implementations of the first aspect, the first region and the second region of the first plastic part form a receiving cavity with an opening, the receiving cavity being configured to receive the screen assembly, wherein a projection of a bottom surface of the receiving cavity onto a plane parallel to the first direction coincides with a projection of mating surfaces of the first protrusion and the second plastic part onto a plane parallel to the first direction.

Through the embodiment, the first bulge can pointedly strengthen the structural strength of the transition part of the first area and the area with higher structural strength, thereby being beneficial to avoiding deformation of the first area and the accommodating cavity caused by falling impact.

With reference to the first aspect, in certain implementations of the first aspect, in the second direction, the second plastic part is provided with a second protrusion on a side wall facing the first plastic part.

Through the embodiment, when the electronic equipment falls, the impact load can be conducted to the region with higher structural strength in the first plastic part through the second bulge, so that the impact resistance of the middle frame assembly is improved, and further, the second bulge can provide buffering for the relative movement between the first plastic part and the second plastic part, the separation and the separation of the first plastic part and the second plastic part are avoided, and the protection force of the middle frame assembly on the screen assembly is improved.

With reference to the first aspect, in some implementations of the first aspect, the plastic part further includes a middle frame, in a first direction, the first plastic part includes a third area connected to the first area, and the middle frame is wrapped and partially embedded in the third area.

The part of the middle frame in the third area can be mutually meshed and supported with the plastic in the middle frame, so that the third area has higher structural strength, and the screen assembly can be protected.

With reference to the first aspect, in some implementations of the first aspect, the first protrusion of the first plastic part is in clearance fit with the second plastic part, and a maximum clearance is 0.05mm.

The first plastic part and the second plastic part are two mutually independent parts, the minimum clearance is 0, and the maximum clearance is 0.05mm in a clearance fit mode, so that the first plastic part and the second plastic part can be conveniently installed and detached.

With reference to the first aspect, in certain implementations of the first aspect, a minimum value of a height of the aperture in the first direction is greater than or equal to 0.8mm.

With reference to the first aspect, in certain implementations of the first aspect, a minimum value of a width of the aperture in the second direction is greater than or equal to 0.3mm.

With reference to the first aspect, in certain implementations of the first aspect, in the second direction, a minimum value of the widths of the first region and the first protrusion is greater than or equal to 1.0mm.

With reference to 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 direction of the opening of the accommodating cavity and a bottom surface of the accommodating cavity is 0.5mm to 0.8mm.

With reference to the first aspect, in certain implementations of the first aspect, in the first direction, a distance between an edge of the first protrusion facing away from the opening of the accommodating cavity and a bottom surface of the accommodating cavity is 0.5mm to 0.8mm.

With reference to 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 toward the opening of the accommodating cavity and a bottom surface of the accommodating cavity is the same as 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.

Through above-mentioned embodiment, the ability of first protruding transmission impact load to the higher region of structural strength can further promote, and then is favorable to avoiding first regional structure damage more, improves the impact resistance of center subassembly.

With reference to the first aspect, in some implementations of the first aspect, the second protrusion of the second plastic part is in clearance fit with the first plastic part, and a maximum clearance is 0.05mm.

With reference to the first aspect, in certain implementations of the first aspect, a minimum value of a height of the mating surfaces of the second protrusion and the first plastic part in the first direction is greater than or equal to 0.4mm.

In a second aspect, there is provided an electronic device comprising a midframe assembly as in the first aspect or in various implementations of the first aspect.

With reference to the second aspect, in some implementations of the second aspect, the electronic device further includes a screen assembly and a chassis, the middle frame assembly is located between the screen assembly and the chassis, and the screen assembly, the middle frame assembly, and the chassis are connected to form a closed structure.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 2 is a schematic exploded view of an electronic device provided by an embodiment of the present application.

FIG. 3 is an enlarged schematic view of a portion of a cross section of a middle frame assembly in the direction B-B' of FIG. 1 according to an embodiment of the present application.

FIG. 4 is an enlarged partial schematic view of a cross section taken along the direction B-B' in FIG. 1 of another middle frame assembly according to an embodiment of the present application.

Fig. 5 is an enlarged partial schematic view of region C in fig. 4.

Fig. 6 is a schematic top view of a middle frame according to an embodiment of the present application.

Fig. 7 is a schematic cross-sectional view of a middle frame assembly according to an embodiment of the present application.

FIG. 8 is an enlarged schematic view of a portion of the cross-section of the center block assembly of FIG. 7 in the direction C-C'.

Detailed Description

The technical scheme of the application will be described below with reference to the accompanying drawings.

In the description of the present application, it should be noted that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features which is being indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature.

In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and for example, "connected" may be either detachably connected or non-detachably connected, or may be directly connected or indirectly connected through an intermediary.

References to directional terms in the embodiments of the present application, such as "upper", "lower", "left", "right", "inner", "outer", etc., are merely with reference to the directions of the drawings, and thus, the directional terms are used in order to better and more clearly describe and understand the embodiments of the present application, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. In addition, unless otherwise indicated herein, the term "plurality" as used herein refers to two or more. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.

In the description of embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the embodiment of the application, "and/or" is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate that a exists alone, and a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The application relates to a middle frame assembly of an electronic device. The electronic device may be a mobile terminal such as a mobile phone, a tablet computer accessory, a wearable device, a vehicle-mounted device, an Augmented Reality (AR)/Virtual Reality (VR) device, a notebook computer, an ultra-mobile personal computer, a UMPC, a netbook, a Personal Digital Assistant (PDA), or a professional photographing device such as a digital camera, a single-lens reflex camera/micro-lens reflex camera, a motion video camera, a pan-tilt camera, or an unmanned aerial vehicle. The embodiment of the application does not limit the specific form of the electronic equipment.

80% Of electronic product damage results from a drop crash, and when a drop occurs, screen components of the electronic device are often more susceptible to damage due to material differences. The middle frame component is used as a component for supporting and protecting the screen component, and the impact resistance is important. Accordingly, researchers have considered improving the impact resistance of the center assembly to provide better fall protection for the screen assembly.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application. Fig. 2 is a schematic exploded view of an electronic device according to an embodiment of the present application. Referring to fig. 1 and 2, an electronic device may generally include a screen assembly 1, a middle frame assembly 2, and a base plate 3, the middle frame assembly 2 being positioned between the screen assembly 1 and the base plate 3, the screen assembly 1, the middle frame assembly 2, and the base plate 3 being connectable to form a closed structure.

The middle frame assembly 2 may include a middle frame 21, a first plastic piece 22 and a second plastic piece 23. The first plastic part 22 may be wrapped around the periphery of the middle frame 21, and a part of the area in the middle frame 21 is embedded in the first plastic part 22. The second plastic part 23 surrounds the outer periphery of the first plastic part 22, or the first plastic part 22 is located between the screen assembly 1and the second plastic part 23.

To facilitate the description of the embodiments below, an O-xyz coordinate system is established for the midframe component and the electronic device. 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.

In some cases, the combination of the middle frame 21 and the first plastic part 22 may be referred to as a "face shell", and the second plastic part 23 may be referred to as a "middle frame", but it should be understood that the different definitions of the component names do not affect the structure and function thereof, and do not limit the scope of the present application.

The screen assembly 1 may be a rigid screen or a flexible screen, and a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED) display, or a light-emitting diode (LED) display may be used.

The middle frame 21 may be made of metal, for example, aluminum alloy, and the forming process of the middle frame 21 may be aluminum alloy sheet stamping. In practical application, the choice of the metal material and the forming process of the middle frame 21 can be combined with the practical self-selection. Compared with the die casting process, the stamping process has the advantages that the cost is lower, the quality of the formed part is high, and the material selection range is wider on the premise that the obtained middle frame can meet the strength requirement.

The first plastic part 22 and the second plastic part 23 may be made of the same plastic material. The first plastic part 22 and the second plastic part 23 can be made of various materials, and in practical application, those skilled in the art can select according to specific needs. For example, the material may be one or more of polyphthalamide (PPA), polyamide (PA), polybutylene terephthalate (polybutylene terephthalate, PBT), polyphenylene sulfide (polyphenylene sulfide, PPS), polyether ether ketone (polyetherether ketone, PEEK), polycarbonate (polycarbonate, PC), and the like.

According to practical requirements, the material of the bottom plate 3 may be a metal material, a plastic material, a ceramic material, etc., which is not limited in the present application.

With continued reference to fig. 1 and 2, when the electronic device is dropped in the direction a of fig. 1, the corner typically contacts the drop surface first, possible situations include, but are not limited to, the first corner 231 of the first plastic 22 adjacent to the second plastic 23 contacting the drop surface first on the side facing the screen assembly 1, or the second corner 232 of the bottom panel 3 adjacent to the second plastic 23 contacting the drop surface first.

The number of first corners 231 and second corners 232 in the electronic device corresponds to, and is plural, for example, there may be 4 first corners 231 and 4 second corners 232, respectively.

Fig. 3 is a schematic partial view of a middle frame assembly according to an embodiment of the present application, taken along the direction B-B' in fig. 1. In some possible electronic device configurations, as shown in fig. 3, the screen assembly 1 may include a display module 12 and a protective top cover 11 stacked one on another in a 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 a space exists between the two parts, wherein the space can be used for accommodating the electronic part 4, and the electronic part 4 can be a flexible circuit board (flexible printed circuit, FPC) or other parts required by electronic equipment.

The first plastic member 22 of the middle frame assembly 2 sequentially includes, in the first direction z, i.e., the direction facing the screen assembly 1, or the thickness direction of the middle frame assembly 2, a third region 223 between the screen assembly 1 and the bottom plate 3, a first region 222 between the screen assembly 1 and the second plastic member 23, and a second region 221 surrounding the periphery of the screen assembly 1, which are sequentially connected.

The third area 223 has a large thickness in the first direction z, and can be embedded with metal components such as the middle frame 21 and screws (not shown in the figure), so that the screen assembly has higher structural strength, correspondingly has higher impact resistance, can support the screen assembly, the second area 221 is arranged around the circumferential side wall of the protective top cover 11 in the screen assembly 1, can protect the screen assembly 1, and the first area 222 is arranged around the circumferential side wall of the display module 12 in the screen assembly 1 and is positioned between the third area 223 and the second area 221, so that the transition receiving effect is realized, and the thickness in the first direction z is small, the structural strength is lower, and the impact resistance is correspondingly weaker.

The screen assembly 1 is accommodated in the accommodating cavity formed by the middle frame assembly 2, or 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, the side wall of the screen assembly 1 is surrounded by the first area 222 and the second area 221, namely the side wall of the screen assembly 1 is surrounded by the first area 222 and the second area 221, and the screen assembly 1 is supported and protected.

However, when the electronic device is dropped, and particularly when the first corner 231 first contacts the drop surface, the second plastic part 23 and the first plastic part 22 are forced to move relatively, causing a collision, and even separation. The impact load is conducted from the second plastic part 23 to the first region 222 in the first plastic part 22, and the middle frame assembly 2 is difficult to form effective support and protection for the screen assembly 1 due to weak structural strength, so that the screen assembly 1 is easily damaged due to falling impact.

Based on the above situation, the embodiment of the application provides a middle frame assembly with better impact resistance, which can improve the protection capability of a screen assembly of electronic equipment and is beneficial to avoiding the damage of a screen caused by falling.

FIG. 4 is a partial schematic view of a cross-section of a middle frame assembly along the direction B-B' in FIG. 1 according to an embodiment of the present application. As shown in fig. 4, the middle frame assembly 2 includes a first plastic part 22, in which a first area 222 and a second area 221 are sequentially formed by edge protrusions of the first plastic part 22 in a first direction, the first direction is a thickness direction of the middle frame assembly 2, a second plastic part 23 surrounds the periphery of the first plastic part 22, a first protrusion 225 is disposed on a side wall of the first plastic part 22 facing the second plastic part 23 in a second direction, the second direction is perpendicular to the first direction, and a gap 201 is formed among the first area 222, the second area 221, the second plastic part 23 and the first protrusion 225.

Wherein the second direction may be the B-B' direction as shown in fig. 1.

At the corner of the electronic device, a void 201 is formed between the first plastic part 22 and the second plastic part 23, the void 201 has a function similar to a buffer air bag, and when the electronic device falls, the buffer air bag can buffer the impact load in the process of conducting the impact load from the second plastic part 23 to the first region 222 of the first plastic part 22, so that the impact load at the first region 222 with lower structural strength is reduced. In addition, the first protrusion 225 can attenuate the relative movement between the second plastic part 23 and the first plastic part 22, and conduct the impact load to the region of the first plastic part 22 with higher structural strength, further reducing the impact load at the first region 222 with lower structural strength. Through the above embodiment, the first region 222 is advantageously prevented from being damaged, the impact resistance of the middle frame assembly 2 is improved, and the protection of the middle frame assembly 2 to the screen assembly is further improved.

It will be appreciated that there are also a plurality of first protrusions 225 on the first plastic part 22, the number of first protrusions 225 being the same as the number of first corners 231 or the same as the number of second corners 232.

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

When the electronic device is dropped, and in particular the first corner 231 first contacts the drop surface, the second plastic part 23 and the first plastic part 22 move relatively, so that the aperture 201 is deformed. The deformation process can provide stress buffering for the first region 222, reduce impact load applied to the first region 222, avoid structural damage of the first region 222, and improve impact resistance of the middle frame assembly.

Fig. 5 is an enlarged partial schematic view of region C in fig. 4. Alternatively, as shown in fig. 5, the minimum value of the height d1 of the aperture 201 in the first direction is greater than or equal to 0.8mm, and the minimum value of the width d2 in the second direction is greater than or equal to 0.3mm.

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

In the second direction, the presence of the first protrusion 225 can increase the width of the first region 222 at the first corner 231, so as to enhance the structural strength thereof, further enhance the impact resistance of the middle frame assembly, and facilitate improving the protection of the screen assembly of the electronic device.

Optionally, the first region 222 and the second region 221 of the first plastic part 22 form a receiving cavity 224 with an opening, the receiving cavity 224 being used for receiving the screen assembly 1, wherein a projection of a bottom surface 226 of the receiving cavity 224 on a plane parallel to the first direction coincides with a projection of the mating surfaces 202 of the first protrusion 225 and the second plastic part 23 on a plane parallel to the first direction.

The receiving cavity 224 may be used to receive a screen assembly of an electronic device. In the above embodiment, the extension plane of the bottom surface 226 of the accommodating cavity 224 can intersect the mating surfaces 202 of the first protrusion 225 and the second plastic part 23, i.e. in the first direction, the first protrusion 225 spans the bottom surface 226 of the accommodating cavity 224.

Based on the above, the first protrusion 225 can pointedly strengthen the structural strength at the transition between the first region 222 and the third region 223, which is favorable for avoiding deformation of the first region 222 and the accommodating cavity 224 due to falling impact, and in addition, when the electronic device falls and the first corner 231 contacts the falling surface at first, the impact load can be transferred to the third region 223 with higher structural strength via the first protrusion 225, which is favorable for avoiding structural damage of the first region 222, improving the impact resistance of the middle frame assembly, and further improving the protection of the middle frame assembly to the screen assembly.

Alternatively, the first protrusion 225 of the first plastic part 22 may be in a clearance fit with the second plastic part 23 with a maximum clearance of 0.05mm.

The two mutually independent parts of the first plastic part 22 and the second plastic part 23 are in a clearance fit mode with a minimum clearance of 0 and a maximum clearance of 0.05mm, so that the first plastic part 22 and the second plastic part 23 can be conveniently installed and detached.

Alternatively, in the first direction, a distance d4 between an edge of the first projection 225 facing the direction of the opening of the accommodating chamber 224 and the bottom surface 226 of the accommodating chamber 224 may be 0.5mm to 0.8mm, and a distance d5 between an edge of the first projection 225 facing the direction of the opening of the accommodating chamber 224 and the bottom surface 226 of the accommodating chamber 224 may be 0.5mm to 0.8mm.

Further, in the first direction, a distance d4 between an edge of the first projection 225 facing the opening of the accommodating chamber 224 and the bottom surface 226 of the accommodating chamber 224 is the same as a distance d5 between an edge of the first projection 225 facing away from the opening of the accommodating chamber 224 and the bottom surface 226 of the accommodating chamber 224.

By the above embodiment, the first protrusion 225 has better capability of transmitting the impact load to the third region 223, and the impact resistance of the middle frame assembly and the protection of the screen assembly can be further improved.

Referring back to fig. 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.

In the above embodiment, when the electronic device falls and the second corner 232 first contacts the falling surface, the impact load can be conducted to the third area 223 with higher structural strength in the first plastic part 22 through the second protrusion 233, which is favorable for improving the impact resistance of the middle frame assembly, and 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, avoid separation and disengagement of the two parts, and is favorable for improving the protection force of the middle frame assembly to the screen assembly.

It will be appreciated that there are also a plurality of second protrusions 233 on the second plastic part 23, and the number of second protrusions 233 is the same as the number of first corners 231 or the number of second corners 232.

Alternatively, the second protrusion 233 of the second plastic part 23 may be in clearance fit with the first plastic part 22 with a maximum clearance of 0.05mm.

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

In some embodiments, there is a space between the first plastic part 22, the second plastic part 23, the first protrusion 225 and the second protrusion 233, which space may be used to accommodate the electronic part 4.

Optionally, the middle frame assembly provided by the embodiment of the application may further include a middle frame, where the middle frame is wrapped and partially embedded in the first plastic part.

Fig. 6 is a schematic top view of a middle frame 21 according to an embodiment of the present application. As shown in fig. 6, at least one opening 211 for receiving a screw post 227 is provided in the center 21.

In some related art, in order to provide a space for the electronic component 4 or other components in the electronic device, such as an antenna (not shown in the drawing), a screw post (not shown in the drawing), etc., the ratio of the center frame in the first plastic member 22 is generally insufficient, especially at the corner of the electronic device, the center frame is too far from the side periphery of the accommodating cavity 224 in the second direction, resulting in insufficient protection of the center frame assembly against the screen assembly when the electronic device is dropped.

Fig. 7 is a schematic cross-sectional view of a middle frame assembly according to an embodiment of the present application along a plane parallel to the second direction. Optionally, as shown in fig. 7, at least one screw column 227 corresponding to at least one opening 211 in the middle frame 21 is provided on the second plastic member 23.

The screw post 227 may extend through the second plastic member 23 and into the first plastic member to receive a fastener, such as a screw, for connecting to an electronic device component. Therefore, it can also be said that at least one screw column 227 corresponding to at least one opening 211 in the middle frame 21 is provided on the first plastic member 22.

FIG. 8 is an enlarged schematic view of a portion of the middle frame assembly of FIG. 7 in section taken along the direction C-C'. Optionally, as shown in fig. 8, 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 wrapped and partially embedded in the third area 223.

The portion of the middle frame 21 located in the third region 223 can be engaged with and supported by the plastic therein, so that the third region 223 has higher structural strength. It should be understood that other combinations of the middle frame 21 and the first plastic member 22 are possible, besides those shown in fig. 8, such that the middle frame 21 and the first plastic member 22 are engaged with each other to form a region having a relatively high structural strength.

In some embodiments, the middle frame 21 may extend to near the screw post 227. Based on this, the duty ratio of the middle frame 21 made of metal in the first plastic part 22 can be improved as much as possible, so that the structural strength of the first plastic part is further improved, and correspondingly, the protection capability of the middle frame assembly to the screen assembly is also further improved.

The embodiment of the application provides electronic equipment, which comprises the middle frame assembly in any embodiment.

Referring back to fig. 2, the electronic device optionally includes a screen assembly 1 and a chassis 3, a middle frame assembly 2 is located between the screen assembly 1 and the chassis 3, and the screen assembly 1, the middle frame assembly 2, and the chassis 3 are connected to form a closed structure.

The structure of the electronic device may refer to the above-mentioned structure of the electronic device, and for brevity, will not be described herein.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (15)

1. A center assembly, comprising:

the first plastic part (22), in a first direction, the edge of the first plastic part (22) is protruded to form a first area (222) and a second area (221) in sequence, and the first direction is the thickness direction of the middle frame assembly (2);

the second plastic part (23) surrounds the periphery of the first plastic part (22);

the first plastic part (22) is provided with a first bulge (225) on the side wall facing the second plastic part (23) in a second direction, and the second direction is perpendicular to the first direction;

the first region (222), the second region (221), the second plastic part (23) and the first protrusion (225) are provided with a hole (201) therebetween.

2. The mullion assembly of claim 1, wherein the aperture (201) is configured to deform when the first plastic piece (22) and/or the second plastic piece (23) are subjected to an impact load.

3. The middle frame assembly according to claim 1 or 2, wherein the first region (222) and the second region (221) of the first plastic part (22) form a receiving cavity (224) with an opening, the receiving cavity (224) being for receiving a screen assembly (1);

Wherein, the projection of the bottom surface (226) of the accommodating cavity (224) on the plane parallel to the first direction is overlapped with the projection part of the matching surface (202) of the first bulge (225) and the second plastic part (23) on the plane parallel to the first direction.

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

5. The middle frame assembly according to claim 1 or 2, further comprising a middle frame (21);

In the first direction, the first plastic part (22) comprises a third area (223) connected with the first area (222);

The middle frame (21) is coated and partially embedded in the third region (223).

6. The middle frame assembly according to claim 1 or 2, wherein the first protrusion (225) of the first plastic part (22) is in clearance fit with the second plastic part (23) with a maximum clearance of 0.05mm.

7. The mullion assembly of claim 1 or 2, wherein a minimum value of a height (d 1) of the aperture (201) in the first direction is greater than or equal to 0.8mm.

8. The mullion assembly of claim 1 or 2, wherein a minimum value of a width (d 2) of the aperture (201) in the second direction is greater than or equal to 0.3mm.

9. The mullion assembly of claim 1 or 2, wherein in the second direction, a minimum value of a width (d 3) of the first region (222) and the first boss (225) is greater than or equal to 1.0mm.

10. A middle frame assembly according to claim 3, wherein in the first direction, the distance (d 4) between the edge of the first projection (225) facing the opening of the accommodating cavity (224) and the bottom surface (226) of the accommodating cavity (224) is 0.5mm to 0.8mm, and/or,

The distance (d 5) between the edge of the first protrusion (225) facing away from the opening of the accommodating cavity (224) and the bottom surface (226) of the accommodating cavity (224) is 0.5mm to 0.8mm.

11. A centre frame assembly according to claim 3, wherein in the first direction the distance (d 4) between the edge of the first protrusion (225) facing the direction of the opening of the receiving cavity (224) and the bottom surface (226) of the receiving cavity (224) is the same as the distance (d 5) between the edge of the first protrusion (225) facing away from the opening of the receiving cavity (224) and the bottom surface (226) of the receiving cavity (224).

12. The middle frame assembly according to claim 4, wherein the second protrusion (233) of the second plastic part (23) is in clearance fit with the first plastic part (22) with a maximum clearance of 0.05mm.

13. The mullion assembly of claim 4, wherein a minimum value of a height (d 6) of the mating surface (203) of the second protrusion (233) and the first plastic part (22) in the first direction is greater than or equal to 0.4mm.

14. An electronic device comprising a center assembly as set forth in any one of claims 1 to 13.

15. The electronic device according to claim 14, further comprising a screen assembly (1) and a chassis (3), the middle frame assembly being located between the screen assembly (1) and the chassis (3), the screen assembly (1), the middle frame assembly and the chassis (3) being connected to form a closed structure.