CN113382569A

CN113382569A - Shell assembly and electronic equipment

Info

Publication number: CN113382569A
Application number: CN202110629271.3A
Authority: CN
Inventors: 王海军
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-09-10

Abstract

The present application provides housing assemblies and electronic devices. The shell assembly includes a middle frame, an outer shell, and a connecting layer. The middle frame has a first mating surface. The outer shell is covered on the middle frame and surrounds the middle frame to form a receiving space, and the outer shell has a second matching surface for matching with the middle frame. The connecting layer is arranged between the middle frame and the outer shell, one end of the connecting layer is connected to the first matching surface, and the other end is connected to the second matching surface; at least one leakage hole is arranged on the connecting layer, one end of the leakage hole is connected to the accommodation space, and the other end is connected to the second matching surface. outside gas. By changing the position of the opening, the position of the opening is changed to the connecting layer between the middle frame and the outer shell, so that there is no need to open the leakage hole in the components of the rear shell, which can greatly save space. Since the size of the connection layer between the middle frame and the outer shell is relatively large, opening a leak hole on the connection layer can reduce the difficulty of opening the connection layer. In addition, opening leakage holes on the connection layer can minimize the influence of the leakage holes on the connection performance and structural strength between the middle frame and the outer shell.

Description

Shell assembly and electronic equipment

Technical Field

The application belongs to the technical field of electronic products, and particularly relates to a shell assembly and electronic equipment.

Background

In some cases, the internal pressure and the external pressure of the electronic equipment are not balanced, so that the key noise is generated. In order to solve the above problems, holes are usually required to be formed in the components in the whole machine, which not only occupies a large space, but also reduces the structural strength.

Disclosure of Invention

In view of this, the present application provides in a first aspect a housing assembly comprising:

the middle frame is provided with a first matching surface;

the shell is covered on the middle frame and forms an accommodating space with the middle frame in an enclosing mode, and the shell is provided with a second matching surface used for matching with the middle frame; and

the connecting layer is arranged between the middle frame and the shell, one end of the connecting layer is connected with the first matching surface, and the other end of the connecting layer is connected with the second matching surface; at least one leakage hole is formed in the connecting layer, one end of the leakage hole is communicated with the accommodating space, and the other end of the leakage hole is communicated with external air.

The casing subassembly that this application first aspect provided, at first through the position of change trompil, on the position of trompil changes the articulamentum between center and the shell to need not open the hole of revealing on the part of backshell, can save space greatly, and set up other structures in accommodating space. Secondly, because the connecting layer between the middle frame and the shell has a relatively large size, the opening difficulty of the connecting layer can be reduced by opening the leakage hole. In addition, the leakage holes are formed in the connecting layer, so that the influence of the leakage holes on the connecting performance and the structural strength between the middle frame and the shell can be reduced as much as possible.

The second aspect of the present application provides an electronic device, the electronic device includes a display screen and a housing assembly as provided in the first aspect of the present application, the display screen is disposed on one side of the middle frame, and the housing is disposed on the opposite side of the middle frame.

The electronic equipment that this application second aspect provided through the casing subassembly that adopts this application first aspect to provide, can save the size in the electronic equipment accommodation space to install more structures, still can the minimize leaks the connectivity and the structural strength of hole to electronic equipment.

Drawings

In order to more clearly explain the technical solution in the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be described below.

Fig. 1 is a partial structural schematic diagram of a housing assembly according to an embodiment of the present application.

Fig. 2 is a top view of a connecting layer according to an embodiment of the present disclosure.

FIG. 3 is a top view of a tie layer according to another embodiment of the present application.

Fig. 4 is a top view of a tie layer according to yet another embodiment of the present application.

FIG. 5 is a top view of a tie layer according to yet another embodiment of the present application.

FIG. 6 is a top view of a tie layer according to yet another embodiment of the present application.

FIG. 7 is a schematic partial cross-sectional view of a housing assembly according to an embodiment of the present application.

FIG. 8 is a schematic partial cross-sectional view of a housing assembly according to another embodiment of the present application.

FIG. 9 is a schematic partial cross-sectional view of a housing assembly according to yet another embodiment of the present application.

Fig. 10 is a partial structural schematic diagram of a housing assembly according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Description of reference numerals:

the display device comprises a shell component-1, electronic equipment-2, a display screen-3, a middle frame-10, a first matching surface-11, a first flat part-12, a first bent part-13, a shell-20, a second matching surface-21, a second flat part-22, a second bent part-23, an accommodating space-24, a connecting layer-30, a leakage hole-31, a first sub-leakage hole-311, a second sub-leakage hole-312, a third sub-leakage hole-313, a fourth sub-leakage hole-314, an anti-dust layer-40, a convex part-50 and a gap-51.

Detailed Description

The following is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications are also considered as the protection scope of the present application.

Before the technical solutions of the present application are introduced, the technical problems in the related art will be described in detail.

With the continuous development of electronic devices, electronic devices are now popular with users due to their portability and rich and varied operability. But at the same time, the expectations and requirements of users for electronic devices are also increasing. For example, in order to improve the performance of the external stereo sound of the electronic device, a two-in-one receiver is generally used, a speaker-type multipurpose open back cavity device is adopted, and a cavity between a speaker diaphragm and a housing serves as a back cavity of the speaker. However, in some special cases of the electronic device, for example, when the user presses a key, the electronic device is impacted by external force, or in a high-pressure or low-pressure environment, the internal air pressure of the electronic device may be different from the external air pressure, so that the shell may change the internal air pressure to push the diaphragm of the speaker to deviate from a normal working state under the condition of the external pressure, thereby generating noise, i.e., what is commonly called a key noise.

To solve this problem, holes are usually formed in a structural member (e.g., a glue layer between the cover plate and the rear case) on the rear case, and the holes are used to communicate the receiving space in the electronic device with the outside air. But this results in the structural member taking up more space. And the strength of the structural member is reduced after the hole is opened, thereby reducing the connection performance of the electronic device.

In view of the above, in order to solve the above problems, the present application provides a housing assembly. Please refer to fig. 1-2 together. Fig. 1 is a partial structural schematic diagram of a housing assembly according to an embodiment of the present application. Fig. 2 is a top view of a connecting layer according to an embodiment of the present disclosure. The present embodiment provides a housing assembly 1. Specifically, the housing assembly 1 includes a middle frame 10, an outer shell 20, and a connection layer 30. Wherein, the middle frame 10 is provided with a first matching surface 11. The outer shell 20 is covered on the middle frame 10 and forms an accommodating space 24 with the middle frame 10, and the outer shell 20 has a second matching surface 21 for matching with the middle frame 10. The connecting layer 30 is arranged between the middle frame 10 and the outer shell 20, one end of the connecting layer 30 is connected with the first matching surface 11, and the other end is connected with the second matching surface 21; at least one leakage hole 31 is formed in the connecting layer 30, one end of the leakage hole 31 is communicated with the accommodating space 24, and the other end of the leakage hole 31 is communicated with the outside air.

The present embodiment provides a case assembly 1, wherein the case assembly 1 may be a partial structure in an electronic device 2. In addition, the housing assembly 1 is an assembly, and as the name suggests, is not composed of one structural member, but is composed of a plurality of structural members.

Alternatively, the electronic device 2 referred to in this embodiment generally includes, but is not limited to, a mobile terminal such as a mobile phone, a tablet Computer, a notebook Computer, a palm top Computer, a Personal Computer (PC), a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and a fixed terminal such as a Digital TV, a desktop Computer, and the like. The present embodiment is illustrated with the electronic device 2 as a mobile phone.

The present embodiment provides the housing assembly 1 including the middle frame 10. The middle frame 10 is a "keystone" in the housing assembly 1 and the electronic device 2. The middle frame 10 is used to carry most of the structural members of the electronic device 2 and provide a base for mounting the same. For example, one end of the middle frame 10 can be provided with the display screen 3, the other end can be provided with the rear shell, and the middle frame 10 can also be provided with components such as a circuit board, a battery and the like. And the middle frame 10 may also function to protect the structural members. In addition, the middle frame 10 may also sometimes serve as a partial appearance surface in the case assembly 1.

The center 10 of the present embodiment has a first engagement surface 11, and the first engagement surface 11 functions to engage with the housing 20 so that the housing 20 is favorably mounted on the center 10. Optionally, the middle frame 10 has a first flat portion 12 and a first bent portion 13 connected to the periphery of the first flat portion 12 in a bent manner, and a side surface of the first bent portion 13 away from the first flat portion 12 is a first mating surface 11. In addition, the material of the middle frame 10 includes metal, plastic, or metal and plastic.

The housing assembly 1 provided in this embodiment further includes a housing 20, and the housing 20 acts as an appearance housing of the housing assembly 1 and the electronic device 2, so as to effectively protect structural members disposed on the middle frame 10, and some of the structural members may also be directly disposed on the housing 20. And the outer surface of the shell 20 is the appearance surface of the electronic device 2, and the surface performance of the shell assembly 1 can be effectively improved by processing the outer surface of the shell 20. Alternatively, the housing 20 may be a rear or front housing. The present embodiment is illustrated with the case 20 as a rear case. Alternatively, the material of the housing 20 may also include metal, plastic, or both.

The rear case in this embodiment has a second engagement surface 21, and the second engagement surface 21 is used to engage with the first engagement surface 11 of the middle frame 10, so that the outer case 20 is favorably mounted on the middle frame 10. Optionally, the housing 20 has a second flat portion 22 and a second bent portion 23 connected to the periphery of the second flat portion 22 in a bent manner, a side surface of the second bent portion 23 away from the second flat portion 22 is a second engagement surface 21, and the second engagement surface 21 corresponds to the first engagement surface 11.

The housing assembly 1 according to the present embodiment includes a connection layer 30 in addition to the middle frame 10 and the outer case 20. The connecting layer 30 includes an adhesive layer or a glue layer, and is disposed between the middle frame 10 and the outer shell 20, and one end of the connecting layer 30 is connected to the first matching surface 11, and the other end is connected to the second matching surface 21, so that the rear shell and the middle frame 10 can be bonded together.

Alternatively, the housing 20 may be provided, and then one end of the connecting layer 30 is adhered to the second mating surface 21, and then the other end of the connecting layer 30 is adhered to the first mating surface 11 of the middle frame 10, so as to assemble the three. Alternatively, the connection layer 30 may be disposed around the second mating face 21 by one turn, i.e., the connection layer 30 may be disposed 360 ° with respect to the housing 20.

As can be seen from the above, the provision of structural members and openings in the rear housing takes up a lot of space. Therefore, in the present embodiment, the position of the opening is changed to the position on the connection layer 30 between the middle frame 10 and the outer casing 20 by changing the position of the opening, and one end of the leakage hole 31 is communicated with the receiving space 24, and the other end is communicated with the outside air. Thus, there is no need to provide the rear housing part with the vent hole 31, which results in a significant space saving, and additional structural elements are provided in the receiving space 24. Secondly, since the size of the connection layer 30 between the middle frame 10 and the outer casing 20 is relatively large, the position thereof is relatively flat, and the connection layer 30 is a separate component, the opening of the connection layer 30 with the leakage holes 31 can reduce the difficulty of opening the connection layer. In addition, since the size of the connection layer 30 is relatively large, the leakage holes 31 are formed in the connection layer 30 to minimize the influence of the leakage holes 31 on the connection performance and the structural strength between the frame 10 and the case 20.

The number of the leakage holes 31 may be one or more, and the present application is not limited thereto. Optionally, the connection layer 30 is provided with a plurality of leakage holes 31 arranged at intervals. The provision of the plurality of leakage holes 31 makes it possible to reduce the opening area of each leakage hole 31 under the same total opening area, thereby preventing impurities such as water or dust from entering into the accommodation space 24 through the leakage hole 31 from the outside, and improving the sealing performance of the housing assembly 1.

Please refer to fig. 3-5. FIG. 3 is a top view of a tie layer according to another embodiment of the present application. Fig. 4 is a top view of a tie layer according to yet another embodiment of the present application. FIG. 5 is a top view of a tie layer according to yet another embodiment of the present application. In the present embodiment, the leakage hole 31 satisfies at least one of the following configurations:

referring to fig. 3, the leakage hole 31 includes a first sub-leakage hole 311 and a second sub-leakage hole 312 connected and communicated with each other in a bent manner. Optionally, the shape of the leakage hole 31 is a V shape;

referring to fig. 4, the leakage hole 31 includes a first sub-leakage hole 311, a second sub-leakage hole 312, and a third sub-leakage hole 313, which are connected to each other, one end of the second sub-leakage hole 312 is bent to connect to the first sub-leakage hole 311, the other end of the second sub-leakage hole 312 is bent to connect to the third sub-leakage hole 313, and the first sub-leakage hole 311 and the third sub-leakage hole 313 are respectively disposed on two opposite sides of the second sub-leakage hole 312. Optionally, the shape of the leakage hole 31 is zigzag;

referring to fig. 5, the leakage hole 31 includes a first sub-leakage hole 311, a second sub-leakage hole 312, a third sub-leakage hole 313 and a fourth sub-leakage hole 314 that are connected to each other, one end of the second sub-leakage hole 312 is bent to connect to the first sub-leakage hole 311, the other end of the second sub-leakage hole 312 is bent to connect to the third sub-leakage hole 313, the first sub-leakage hole 311 and the third sub-leakage hole 313 are respectively disposed on two sides of the second sub-leakage hole 312 opposite to each other, the third sub-leakage hole 313 is further bent to connect to the fourth sub-leakage hole 314, and the second sub-leakage hole 312 and the fourth sub-leakage hole 314 are respectively disposed on two sides of the third sub-leakage hole 313 opposite to each other. Alternatively, the shape of the leakage hole 31 is a "W" shape.

In the related art, in addition to the leakage hole 31 formed in the structural member of the housing 20, a pressure balance film may be installed on the leakage hole 31, and the pressure balance film may allow gas to pass therethrough but may not allow impurities such as water or dust to pass therethrough. Thus, when pressure is applied to the outside, the air pressure inside and outside can be kept consistent through the air pressure balancing film. The air pressure balancing film can improve the sealing performance of the shell assembly 1 without affecting the air pressure, so that the intelligent electronic device 2 has professional-grade (such as IP68 grade) waterproof performance, for example, the electronic device 2 does not enter water in water for 30 minutes or within one hour, which becomes the standard configuration of high-end products in the industry. The better the performance of the air pressure balance film, the better the waterproof performance of the electronic device 2, and the better the sealing performance inside the whole device.

In summary, in the related art, in order to solve the problem of good sealing performance inside the whole machine and to prevent horn noise caused by the key, the inside of the machine is provided with an air pressure leakage, and an air pressure balance film is attached to ensure that the states of the inside and the outside air pressure are basically consistent.

However, this method further occupies a certain accommodation space 24, for example, the area of the air pressure balance film needs to be at least 8mm²The stacking difficulty is increased and the cost is also increased. Therefore, in the present embodiment, by designing the shape of the leakage hole 31, one leakage hole 31 is divided into a plurality of sub leakage holes 31, and the plurality of sub leakage holes 31 are connected to each other in a bent manner, so that the original linear leakage hole 31 is changed into the irregular leakage hole 31 having a plurality of bent portions. The plurality of bent portions can reduce the probability that external water enters the accommodating space 24 inside the housing assembly 1 through the leakage holes 31, thereby achieving the waterproof and sealing effects.

As to how the bending is specifically performed, different designs are possible for different numbers of sub-leakage holes 31. For example: when the leakage hole 31 includes two sub-leakage holes 31, that is, the leakage hole 31 includes a first sub-leakage hole 311 and a second sub-leakage hole 312 connected in a bent manner, the leakage hole 31 has a V shape. When the leakage hole 31 includes three sub leakage holes 31, that is, the leakage hole 31 includes a first sub leakage hole 311, a second sub leakage hole 312, and a third sub leakage hole 313, one end of the second sub leakage hole 312 is bent and connected to the first sub leakage hole 311, and the other end is bent and connected to the third sub leakage hole 313, and the shape of the leakage hole 31 is "Z" shape. When the leakage hole 31 includes four sub leakage holes 31, that is, the leakage hole 31 includes a first sub leakage hole 311, a second sub leakage hole 312, a third sub leakage hole 313 and a fourth sub leakage hole 314, one end of the second sub leakage hole 312 is bent and connected to the first sub leakage hole 311, the other end of the second sub leakage hole 312 is bent and connected to the third sub leakage hole 313, the third sub leakage hole 313 is also bent and connected to the fourth sub leakage hole 314, and the shape of the leakage hole 31 is "W" shape.

Through the design of the special-shaped leakage hole 31, the noise problem caused by airflow due to pressing can be balanced, and the purpose of life water prevention can be achieved. The life waterproof means that the outer surface of the shell assembly 1 is stained with water or the shell assembly 1 enters water in a short time, and water can be prevented from entering the accommodating space 24 through the balance hole. This eliminates the air pressure balance film of the related art, frees more space for the housing assembly 1, and also reduces the cost of the housing assembly 1.

Referring to fig. 6, fig. 6 is a top view of a connection layer according to another embodiment of the present disclosure. In this embodiment, the opening size of the end of the leakage hole 31 close to the external air is smaller than the opening size of the end of the leakage hole 31 far away from the external air.

While it is possible for the leakage hole 31 to have openings with opposite ends, the present embodiment allows the openings at different positions to have different sizes. In the present embodiment, the opening size of the end of the leakage hole 31 close to the external air may be smaller than the opening size of the end of the leakage hole 31 far from the external air. It will also be appreciated that the opening of the leakage hole 31 near the end of the ambient air can be designed smaller, thereby further reducing the risk and probability of ambient water entering the leakage hole 31 and thus the receiving space 24.

Referring to fig. 6 again, in the present embodiment, an opening size of the end of the leakage hole 31 close to the accommodating space 24 is larger than an opening size of the end of the leakage hole 31 far from the accommodating space 24.

As for the opening at the other end of the leakage hole 31, in the present embodiment, the opening size of the end of the leakage hole 31 close to the receiving space 24 may be made larger than the opening size of the end of the leakage hole 31 far from the receiving space 24. It is also understood that the opening of the leakage hole 31 near the end of the receiving space 24 can be designed to be larger, so that other inside the receiving space 24 can enter the leakage hole 31 more easily, and the outside air can enter the receiving space 24 through the leakage hole 31 more easily, so that the pressure inside and outside can be balanced more easily.

In summary, the present embodiment can further improve the sealing performance and balance efficiency of the housing assembly 1 by changing the opening size of the leakage hole 31.

Referring to fig. 7, fig. 7 is a partial cross-sectional view of a housing assembly according to an embodiment of the present disclosure. In the present embodiment, the connection layer 30, the first mating surface 11, and the second mating surface 21 collectively enclose the leakage hole 31.

Regarding the shape of the leakage hole 31, the present embodiment may directly penetrate through the upper and lower surfaces of the connection layer 30, so that the connection layer 30 originally integrated is divided into two connection layers 30, and the two connection layers 30, the first mating surface 11 of the middle frame 10 and the second mating surface 21 of the housing 20 together enclose the leakage hole 31. It is also understood that, as for the side walls of the leak hole 31, two side walls are formed by the connection layer 30, one side wall is formed by the first mating face 11, and the other side wall is formed by the second mating face 21. The design of the connection layer 30 can reduce the difficulty in manufacturing the leakage hole 31, and the leakage hole 31 can be easily manufactured into a shape required by a user.

In another embodiment of the present application, please refer to fig. 8, and fig. 8 is a partial cross-sectional view of a housing assembly in another embodiment of the present application. In this embodiment, the leakage hole 31 may not penetrate through the upper and lower surfaces, may only penetrate through the upper and lower surfaces, or may penetrate through both the upper and lower surfaces, so as to still ensure that the connection layers 30 are integrally connected together, thereby making it easier to adhere the connection layers 30 to the housing 20. In the present embodiment, the leak hole 31 penetrates only the upper surface.

Referring to fig. 9, fig. 9 is a partial cross-sectional view of a housing assembly according to another embodiment of the present application. In this embodiment, an anti-dust layer 40 is disposed on a side wall of the connection layer 30 where the leakage hole 31 is formed.

The surface of the connection layer 30 is usually sticky, so that certain impurities such as dust can adhere to the side wall, and the size of the leakage hole 31 is reduced, so that the pressure relief is not uniform. In this embodiment, an ash prevention layer 40 may be further disposed on a sidewall of the connection layer 30 where the leakage hole 31 is formed. Therefore, the side wall of the connecting layer 30 is not adhered with ash, the size of the leakage hole 31 is not changed, and the stability of pressure relief balance is improved.

Referring to fig. 10, fig. 10 is a partial structural schematic view of a housing assembly according to an embodiment of the present disclosure. In this embodiment, the second mating surface 21 is provided with a protrusion 50, and the protrusion 50 is farther from the accommodating space 24 than the connecting layer 30.

In the present embodiment, for the housing 20, a protrusion 50 may be further disposed on the second mating surface 21, and the protrusion 50 is farther from the receiving space 24 than the connecting layer 30. It is also understood that the protrusion 50 is closer to the outside air and the connection layer 30 is closer to the receiving space 24. Thus, the connection layer 30 can be shielded by the protrusion 50, so that the connection layer 30 is not visible to the user in appearance, and the appearance performance of the housing assembly 1 is improved. And because the bulge part 50 blocks the connecting layer 30, water can be further prevented from entering the balance hole, and the waterproof performance of the shell assembly is improved.

In addition, referring to fig. 10 again, in the present embodiment, a gap 51 is formed between the protrusion 50 and the middle frame 10, and the leakage hole 31 communicates with the gap 51.

In order to ensure the normal performance of the pressure relief function while improving the waterproof performance, a gap 51 may be provided between the boss 50 and the center frame 10, the leakage hole 31 communicates with the gap 51, and the other end of the gap 51 communicates with the outside. It should also be understood that, in the present embodiment, the leakage hole 31 is not directly connected to the outside, but the leakage hole 31 is indirectly connected to the outside through the gap 51, so that the normal use of the pressure relief function can be ensured, and the sealing performance of the housing assembly 1 can be further improved.

In addition, referring to fig. 10 again, in the present embodiment, the protruding portion 50 and the housing 20 are an integral structure, and the appearance surface of the protruding portion 50 and the appearance surface of the housing 20 are in smooth transition.

In the present embodiment, the protruding portion 50 and the housing 20 may be formed as a single body, that is, the housing 20 and the protruding portion 50 are integrally formed, but the protruding portion 50 is described separately in order to better distinguish the structure. In this embodiment, the appearance surface of the protruding portion 50 and the appearance surface of the housing 20 may be smoothly transited. The appearance surface is a surface that can be seen and touched by a user, and it can be understood that the protrusion 50 and the surface of the housing 20 facing away from the receiving space 24 are smoothly transited, thereby improving the appearance performance of the housing assembly 1.

Referring to fig. 11, fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The embodiment provides an electronic device 2, the electronic device 2 includes a display screen 3 and a housing assembly 1 as provided in the above embodiments of the present application, the display screen 3 is disposed on one side of the middle frame 10, and the outer shell 20 is disposed on the other side of the middle frame 10 opposite to the middle frame.

The present embodiment provides an electronic apparatus 2 constituted by the case assembly 1 provided in the above-described embodiment of the present application, in addition to the case assembly 1. By adopting the housing assembly 1 according to the above-described embodiment of the present application, the volume of the housing space 24 in the electronic device 2 can be released, and the cost of the electronic device 2 can be reduced.

The foregoing detailed description has provided for the embodiments of the present application, and the principles and embodiments of the present application have been presented herein for purposes of illustration and description only and to facilitate understanding of the methods and their core concepts; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A housing assembly, characterized in that, comprising:

The middle frame has a first mating surface;

an outer shell, which is covered on the middle frame and forms a receiving space with the middle frame, and the outer shell has a second mating surface for matching with the middle frame; and

A connecting layer is arranged between the middle frame and the outer shell, one end of the connecting layer is connected to the first matching surface, and the other end is connected to the second matching surface; at least one leak is provided on the connecting layer One end of the leak hole communicates with the receiving space, and the other end communicates with the outside air.

2. The housing assembly of claim 1, wherein the leakage hole satisfies at least one of the following structures:

The leakage hole includes a first sub-leakage hole and a second sub-leakage hole that are connected by bending and communicated;

The leakage hole includes a first sub-leakage hole, a second sub-leakage hole, and a third sub-leakage hole, one end of the second sub-leakage hole is bent and connected to the first sub-leakage hole, and the other end of the second sub-leakage hole is bent connecting the third sub-leakage hole, and the first sub-leakage hole and the third sub-leakage hole are respectively arranged on opposite sides of the second sub-leakage hole;

The leakage hole includes a first sub-leakage hole, a second sub-leakage hole, a third sub-leakage hole, and a fourth sub-leakage hole, and one end of the second sub-leakage hole is bent and connected to the first sub-leakage hole The other end is bent and connected to the third sub-leakage hole, and the first sub-leakage hole and the third sub-leakage hole are respectively arranged on opposite sides of the second sub-leakage hole. The third sub-leakage hole is also bent and connected to the fourth sub-leakage hole, and the second sub-leakage hole and the fourth sub-leakage hole are respectively disposed on opposite sides of the third sub-leakage hole.

3 . The housing assembly according to claim 1 , wherein the size of the opening of the end of the leakage hole close to the ambient air is smaller than the size of the opening of the end of the leakage hole away from the ambient air. 4 .

4 . The housing assembly of claim 1 , wherein the size of the opening of the end of the leakage hole close to the accommodating space is larger than the size of the opening of the end of the leakage hole away from the accommodating space. 5 .

5 . The housing assembly of claim 1 , wherein the connection layer, the first mating surface, and the second mating surface jointly surround and form the leakage hole. 6 .

6 . The housing assembly according to claim 5 , wherein an anti-dust layer is provided on the side wall of the connection layer forming the leakage hole. 7 .

7 . The housing assembly of claim 1 , wherein a raised portion is provided on the second mating surface, and the raised portion is farther from the receiving space than the connection layer. 8 .

8 . The housing assembly of claim 7 , wherein a gap is formed between the protruding portion and the middle frame, and the leakage hole communicates with the gap. 9 .

9 . The housing assembly according to claim 7 , wherein the protruding portion and the outer shell are of an integral structure, and the appearance surface of the protruding portion and the outer appearance surface of the outer shell smoothly transition. 10 .

10. An electronic device, characterized in that the electronic device comprises a display screen and the housing assembly according to any one of claims 1-9, wherein the display screen is provided on one side of the middle frame, The outer shell is arranged on the opposite side of the middle frame.