CN113889810B

CN113889810B - Pressfitting structure, circuit board subassembly and mobile terminal

Info

Publication number: CN113889810B
Application number: CN202010616879.8A
Authority: CN
Inventors: 李永光; 王先进; 刘择栋; 王天兴
Original assignee: Oneplus Technology Shenzhen Co Ltd
Current assignee: Oneplus Technology Shenzhen Co Ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2023-08-29
Anticipated expiration: 2040-07-01
Also published as: CN113889810A

Abstract

The application relates to a pressing structure, a circuit board assembly and a mobile terminal. The lamination structure comprises: the bracket is provided with an inserting port; the pressing plate comprises a plug-in connection part, a main body part and a matching part which are sequentially connected, wherein the plug-in connection part can be plugged in the plug-in connection port, and the matching part is provided with a clamping groove; and the buckle is provided with a clamping space, the buckle comprises a clamping part and a guiding part which are oppositely arranged, the clamping part and the guiding part can be elastically opened to form an opening, the matching part can enter the clamping space from the opening, the guiding part can prop the matching part to the clamping part in the process that the matching part enters the clamping space, so that the clamping groove is clamped in the clamping part. Above-mentioned pressfitting structure only needs to press the action through once and can realize the assembly of clamp plate and buckle, and convenient and fast can improve packaging efficiency.

Description

Pressfitting structure, circuit board subassembly and mobile terminal

Technical Field

The present application relates to the field of board-to-board connector fixing structures, and in particular, to a pressing structure, a circuit board assembly, and a mobile terminal.

Background

In electronic devices such as mobile phones and tablet computers, a flexible circuit Board carrying functional elements such as a camera module and a fingerprint module is generally connected with a main circuit Board through a BTB (Board To Board) connector. However, BTB connectors may have a problem of loose connection, resulting in disconnection of the flexible circuit board from the main circuit board. In the prior art, the BTB connector is fixed in a screw driving mode, so that the operation is complicated, and the assembly is inconvenient.

Disclosure of Invention

The embodiment of the application provides a pressing structure, a circuit board assembly and a mobile terminal, which are used for solving the problem that the fixing mode of a BTB connector in the prior art is complicated.

A press-fit structure, comprising:

the bracket is provided with an inserting port;

the pressing plate comprises a plug-in connection part, a main body part and a matching part which are sequentially connected, wherein the plug-in connection part can be plugged in the plug-in connection port, and the matching part is provided with a clamping groove; and

the buckle has the block space, the buckle includes relative block portion and the guide part that sets up, the block portion with the guide part can elastically open in order to form the opening, the cooperation portion can by the opening gets into the block space the in-process of cooperation portion entering the block space, the guide part can with the cooperation portion support to the block portion, so that joint groove joint in the block portion.

Above-mentioned pressfitting structure, in the assembly process, with the clamp plate lid in the connector top, the region that the cooperation portion is aimed at block portion and guide part are relative presses the clamp plate downwards, block portion and guide part elastically open under the extrusion effect of cooperation portion to in the cooperation portion gets into the block space. In the process that the matching part enters the clamping space, the guiding part and the clamping part are reset and mutually close under the action of elastic force, and the guiding part supports the matching part to the clamping part so as to realize the clamping connection of the clamping groove and the clamping part. The clamping part is matched with the clamping groove, so that the clamping buckle forms a limiting effect on the pressing plate in the Z-axis direction, and then the pressing plate is abutted to the connector to prevent the connector from loosening. The press-fit structure can realize the assembly of the press plate and the buckle only by one-time pressing action, is convenient and quick, and can improve the assembly efficiency.

In one embodiment, the guiding portion includes a free end and a first connecting wall, wherein the free end is connected to the engaging portion in a bending manner, and the free end is biased towards a side away from the engaging portion.

In one embodiment, the clamping portion includes a clamping end and a second connecting wall, wherein the clamping end is used for being clamped with the clamping groove, the second connecting wall is connected with the first connecting wall, and when the buckle is placed forward, one side of the free end, which is close to the first connecting wall, is lower than the clamping end.

In one embodiment, the engagement end is a bead that slopes upward away from an end of the second connecting wall when the clasp is placed in the forward direction.

In one embodiment, the engaging end is in a plate structure and is inclined towards the side where the second connecting wall is located.

In one embodiment, the buckle is an integral structure formed by bending a metal elastic sheet.

In one embodiment, the pressing structure further comprises a support, the support is provided with an inserting port, the pressing plate comprises an inserting portion, and the inserting portion can be inserted into the inserting port.

In one embodiment, the pressing plate further comprises a main body portion, the insertion portion and the main body portion form a step structure, and the step structure can be abutted to the support.

A circuit board assembly, comprising:

a circuit board;

the connector is arranged on the circuit board; and

the press-fit structure is characterized in that the buckle is fixed on the circuit board, one end of the pressing plate is inserted into the bracket, and the other end of the pressing plate is clamped with the buckle so as to press the connector on the circuit board.

A mobile terminal includes the circuit board assembly.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a mobile terminal according to an embodiment;

FIG. 2 is a schematic diagram of a circuit board assembly according to an embodiment;

FIG. 3 is an exploded view of the press-fit structure of the circuit board assembly of FIG. 2;

FIG. 4 is a schematic view of a platen of a press-fit structure according to an embodiment;

FIG. 5 is a side view of a buckle of a press-fit structure according to an embodiment;

fig. 6 is a side view of a buckle of the press-fit structure in another embodiment.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, 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 implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

As used herein, "terminal device" refers to a device capable of receiving and/or transmitting communication signals that includes, but is not limited to, devices connected via any one or several of the following connections:

(1) Via a wireline connection, such as via a public-switched telephone network (Public Switched Telephone Networks, PSTN), a digital subscriber line (Digital Subscriber Line, DSL), a digital cable, a direct cable connection;

(2) Via a wireless interface, such as a cellular network, a wireless local area network (Wireless Local Area Network, WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter.

A terminal device arranged to communicate over a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

(1) Satellite phones or cellular phones;

(2) A personal communications system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities;

(3) A radiotelephone, pager, internet/intranet access, web browser, notepad, calendar, personal digital assistant (Personal Digital Assistant, PDA) equipped with a global positioning system (Global Positioning System, GPS) receiver;

(4) Conventional laptop and/or palmtop receivers;

(5) Conventional laptop and/or palmtop radiotelephone transceivers, and the like.

The application provides a mobile terminal.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application. The mobile terminal may include Radio Frequency (RF) circuitry 501, memory 502 including one or more computer readable storage media, an input unit 503, a display unit 504, a sensor 505, audio circuitry 506, a wireless fidelity (WiFi, wireless Fidelity) module 507, a processor 508 including one or more processing cores, and a power supply 509.

The radio frequency circuit 501 may be used to send and receive information, or receive and send signals during a call, specifically, after receiving downlink information of a base station, the downlink information is processed by one or more processors 508; in addition, data relating to uplink is transmitted to the base station. Typically, the radio frequency circuitry 501 includes, but is not limited to, an antenna, at least one amplifier, a tuner, one or more oscillators, a subscriber identity module (SIM, subscriber Identity Module) card, a transceiver, a coupler, a low noise amplifier (LNA, low Noise Amplifier), a duplexer, and the like. In addition, the radio frequency circuit 501 may also communicate with networks and other devices via wireless communications.

Memory 502 may be used to store applications and data. The memory 502 stores application programs including executable code. Applications may constitute various functional modules. The processor 508 executes various functional applications and data processing by running application programs stored in the memory 502.

The input unit 503 may be used to receive input numbers, character information or user characteristic information such as fingerprints, and to generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, in one particular embodiment, the input unit 503 may include a touch-sensitive surface, as well as other input devices. The touch-sensitive surface, also referred to as a touch display screen or a touch pad, may collect touch operations thereon or thereabout by a user (e.g., operations thereon or thereabout by a user using any suitable object or accessory such as a finger, stylus, etc.), and actuate the corresponding connection means according to a predetermined program. Alternatively, the touch-sensitive surface may comprise two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 508, and can receive commands from the processor 508 and execute them.

The display unit 504 may be used to display information input by a user or information provided to the user and various graphical user interfaces of the mobile terminal, which may be composed of graphics, text, icons, video, and any combination thereof.

The mobile terminal may also include at least one sensor 505, such as a light sensor, a motion sensor, and other sensors.

Audio circuitry 506 may provide an audio interface between the user and the mobile terminal through a speaker, microphone. The audio circuit 506 may convert the received audio data into an electrical signal, transmit to a speaker, and convert the electrical signal into a sound signal for output by the speaker; on the other hand, the microphone converts the collected sound signals into electrical signals, which are received by the audio circuit 506 and converted into audio data, which are processed by the audio data output processor 508 for transmission to, for example, another mobile terminal via the radio frequency circuit 501, or which are output to the memory 502 for further processing.

Wireless fidelity (WiFi) belongs to a short-distance wireless transmission technology, and the mobile terminal can help a user to send and receive e-mail, browse web pages, access streaming media and the like through the wireless fidelity module 507, so that wireless broadband internet access is provided for the user.

The processor 508 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or executing application programs stored in the memory 502 and calling data stored in the memory 502, thereby performing overall monitoring of the mobile terminal.

The mobile terminal also includes a power supply 509 for powering the various components. Preferably, the power supply 509 may be logically connected to the processor 508 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system. The power supply 509 may also include one or more of any of a direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.

Functional elements such as a camera module, a fingerprint module, a light sensing assembly and the like in the mobile terminal are usually provided with a flexible circuit board so as to be convenient for communication connection with a main board of the mobile terminal. In addition, the main board and the auxiliary board of the mobile terminal adopting the half-board structure design can also be in communication connection through the flexible circuit board. The connection mode of the flexible circuit board and the main board is as follows: the main board and the flexible circuit board are respectively provided with a matched male connector and a matched female connector, and the male connector and the female connector are mutually aligned and are inserted together, so that the communication connection of the main board and the flexible circuit board can be realized. It will be appreciated that the male and female connectors are both board-to-board connectors (Board to Board Connector, BTB connectors for short).

In some embodiments, the mobile terminal includes a circuit board assembly, referring to fig. 2, the circuit board assembly 200 includes a circuit board 210, a connector 220, and a pressing structure 100.

The circuit board 210 serves as a main board of the mobile terminal, and a control chip is mounted on the circuit board 210. The connector 220 includes a male connector and a female connector that are plugged together, and in one embodiment, the male connector is fixed on the circuit board 210 and is communicatively connected to the control chip, and the female connector is connected to the camera module, the fingerprint module, the light sensing assembly, or the sub-board through a flexible circuit board or a flexible flat cable. The male connector and the female connector are matched with each other, so that the camera module, the fingerprint module or the light sensing component, or the auxiliary board and other elements are in communication connection with the control chip arranged on the circuit board 210. The pressing structure 100 is used for pressing the female connector onto the male connector, preventing the female connector from loosening, and ensuring the female connector and the male connector to be in electrical contact. In other embodiments, the positions of the male and female connectors may be interchanged.

Referring to fig. 2, the pressing structure 100 includes a pressing plate 10 and a buckle 20. The pressing plate 10 can be clamped to the clamping buckle 20, and the clamping buckle 20 forms a limiting effect on the pressing plate 10 in the Z-axis direction, so that the pressing plate 10 is abutted to the female connector, the female connector and the male connector on the circuit board 210 are pressed together, and the female connector is prevented from being loosened.

The buckle 20 is fixed on the circuit board 210 and is located at one side of the connector 220. Specifically, the buckle 20 may be fixedly connected to the circuit board 210 by using glue bonding or soldering. Alternatively, the buckle 20 is fixed to the circuit board 210 by screwing. The buckle 20 includes a mounting portion 21, and the mounting portion 21 is attached to the circuit board 210, so that the contact area between the buckle 20 and the circuit board 210 can be increased, and the buckle 20 can be conveniently and fixedly mounted on the circuit board 210. In an embodiment, the number of the mounting portions 21 is 2, and the 2 mounting portions 21 are symmetrically arranged to enhance the connection stability between the buckle 20 and the circuit board 210.

Referring to fig. 3, the buckle 20 is generally annular and has an engaging space 20a.

In an embodiment, the pressing plate 10 includes a main body 12 and a mating portion 13, the mating portion 13 is connected to the main body 12 in a bending manner, and the mating portion 13 is provided with a clamping groove 11. Specifically, the main body 12 and the mating portion 13 may be disposed vertically, or the main body 12 and the mating portion 13 may be disposed at an included angle of 90±5°. The engaging portion 13 is bent with respect to the main body 12, so that the engaging portion 13 can enter the engaging space 20a. In another embodiment, referring to fig. 4, the platen 10 is integrally formed as a flat plate structure, and the platen 10 includes a mating portion 13, and a clamping groove 11 is formed in the mating portion 13.

The buckle 20 includes an engaging portion 22 and a guide portion 23 disposed opposite to each other, and the engaging portion 22 and the guide portion 23 can be elastically opened to form an opening 20b communicating with the engaging space 20a, and the engaging portion 13 can be inserted into the engaging space 20a through the opening 20 b. The guiding portion 23 plays a role in guiding the mating portion 13, so that the mating portion 13 can move in a direction approaching the engaging portion 22 in a process of entering the engaging space 20a, so that the engaging groove 11 is engaged with the engaging portion 22.

During the assembly of the pressing structure 100, the pressing plate 10 is covered over the connector 220, and the mating portion 13 is aligned with the area between the engaging portion 22 and the guiding portion 23. Pressing down the pressing plate 10, the engaging portion 22 and the guide portion 23 are opened by the pressing action of the engaging portion 13. And then the engaging portion 13 enters the engaging space 20a along the guide portion 23. The guide portion 23 and the engaging portion 22 elastically return to be brought together in the process of the engaging portion 13 entering the engaging space 20a. In the process that the matching part 13 moves downwards along the guiding part 23, the guiding part 23 approaches the clamping part 22 under the action of elastic restoring force, and the matching part 13 is pushed to move towards the direction approaching the clamping part 22, so that the clamping connection between the clamping groove 11 and the clamping part 22 is realized. The clamping part 22 is matched with the clamping groove 11, so that the clamping buckle 20 forms a limiting effect on the pressing plate 10 in the Z-axis direction, and the pressing plate 10 is abutted against the connector 220, thereby achieving the purpose of preventing the connector 220 from loosening. The press-fit structure 100 can realize the assembly of the press plate 10 and the buckle 20 only by one pressing action, is convenient and quick, and is beneficial to improving the assembly efficiency.

Further, the engaging portion 22 and the guide portion 23 are elastically abutted, so that when the engaging portion 13 enters the engaging space 20a along the free end 231 of the guide portion 23, the engaging portion 22 and the guide portion 23 are elastically opened to each other by the pressing action of the engaging portion 13, so that the engaging portion 13 enters the engaging space 20a. After the engaging end 221 is engaged with the engaging groove 11, the engaging portion 22 and the guiding portion 23 are not pressed by the engaging portion 13 any more and return to the initial state, i.e. elastically return to the abutting state, so as to limit the engaging portion 13 from being easily moved out of the engaging space 20a, so as to ensure the pressing effect on the connector 200. In other embodiments, the engaging portion 22 and the guide portion 23 may be formed with a certain gap.

In an embodiment, the buckle 20 may be integrally formed with a metal spring, so that the guiding portion 23 and the engaging portion 22 can be elastically deformed, so that the guiding portion 23 and the engaging portion 22 are close to or far away from each other. The metal spring plate can be made of stainless steel. Specifically, the guiding portion 23 moves away from the engaging portion 22 under the action of an external force, so that the engaging portion 13 is convenient to enter the engaging space 20a. After the pressing plate 10 is installed in place, the guide part 23 and the clamping part 22 are reset, the distance between the guide part 23 and the clamping part 22 is reduced, the matching part 13 can be limited, and the matching part 13 is prevented from being separated from the buckle 20 when the pressing plate 10 is subjected to external interference such as vibration. Alternatively, the buckle 20 may be made of plastic material, and manufactured by injection molding. In other embodiments, the guide portion 23 and the engaging portion 22 may be separate structures, where the guide portion 23 and the engaging portion 22 are hinged to each other, and an elastic element is provided between the guide portion 23 and the engaging portion 22.

Referring to fig. 5, the guiding portion 23 includes a free end 231 and a first connecting wall 232, wherein the free end 231 is bent and connected, and the first connecting wall 232 is connected to the engaging portion 22, and the free end 231 is biased towards a side away from the engaging portion 22. Specifically, the buckle 20 is placed in a forward direction, i.e. the mounting portion 21 of the buckle 20 is directed downward, and the angle α between the free end 231 and the horizontal plane is smaller than 90 °. In other words, the free end 231 is inclined such that the engagement portion 13 slides along the free end 231, generating a displacement obliquely downward, which can be decomposed into a downward movement in the vertical direction and a translational movement in the horizontal direction. During the descent of the mating portion 13, the mating portion is simultaneously translated in a direction approaching the engaging portion 22, so that the engaging groove 11 provided in the mating portion 13 can engage with the engaging portion 22.

The engaging portion 22 includes an engaging end 221 and a second connecting wall 222, the engaging end 221 is accommodated in the engaging groove 11, and the second connecting wall 222 is connected to the first connecting wall 232. When the buckle 20 is placed forward, the side of the free end 231 near the first connecting wall 232 is lower than the engaging end 221, i.e. the distance d between the free end 231 and the mounting portion 21 is smaller than the distance h between the engaging end 221 and the mounting portion 21, so as to ensure that the engaging end 221 can completely enter the engaging groove 11 when the engaging portion 13 moves to the end of the free end 231.

In an embodiment, the engaging end 221 is a curled edge, an end portion of the curled edge away from the second connecting wall 222 is inclined upwards, and an included angle θ smaller than 90 ° is formed between the end of the curled edge and the second connecting wall 222, so as to guide the mating portion 13, and facilitate the engaging between the engaging groove 11 and the engaging end 221. Meanwhile, a clamping and limiting effect is formed on the matching part 13, so that the matching part 13 is prevented from being separated from the buckle 20. In another embodiment, referring to fig. 6, the engaging end 221 is bent with respect to the second connecting wall 222, and the engaging end 221 has a plate-like structure and is inclined toward one side of the mounting portion 21. The engaging end 221 and the free end 231 form a V-shaped structure, which plays a guiding role on the engaging portion 13, so that the engaging portion 13 can enter the engaging space 20a conveniently. After the clamping groove 11 is clamped with the clamping end 221, the clamping end 221 which is obliquely arranged can limit the matching part 13, so that the matching part 13 is prevented from being separated from the buckle 20.

For easy assembly, the main body 12 is provided with a relief port 121 communicating with the clamping groove 11, and the relief port 121 is used for accommodating the clamping end 221.

In an embodiment, the number of the buckles 20 is 2,2 buckles 20 are arranged at intervals, two ends of the pressing plate 10 are respectively clamped to one of the buckles 20, and the middle part of the pressing plate 10 is abutted to the connector 220 so as to press the connector 220 onto the circuit board 210.

In other embodiments, referring to fig. 3, the pressing structure 100 further includes a bracket 30, where the bracket 30 is fixed on the circuit board 210 and located on the other side of the connector 220. Specifically, the bracket 30 may be fixedly connected to the circuit board 210 by using glue bonding or soldering. Alternatively, the bracket 30 is fixed to the circuit board 210 by screwing. The bracket 30 includes a flange 31, and the flange 31 is attached to the circuit board 210, so as to increase the contact area between the bracket 30 and the circuit board 210, and facilitate the installation and fixation of the bracket 30 on the circuit board 210.

The bracket 30 is provided with an insertion port 32, and an insertion portion 14 is formed at an end of the main body portion 12 away from the mating portion 13, and the insertion portion 14 can be inserted into the insertion port 32. The bracket 30 is used for limiting the pressing plate 10 along the Z-axis direction, so that the pressing plate 10 is more stably installed. It should be noted that, the plug interface 32 and the flange 31 are located in different planes.

When the engaging portion 13 moves along the guiding portion 23, the inserting portion 14 can move along the length direction of the pressing plate 10 in the inserting port 32, so that the engaging portion 22 engages with the engaging groove 11. The length direction of the platen 10 is the X-axis direction in fig. 2.

The plug portion 14 and the main body portion 12 form a stepped structure that can abut against the bracket 30 to define the position of the platen 10 in the horizontal direction. At the same time, the spacing between the main body 12 and the circuit board 210 can be increased to accommodate the height of the connector 220.

In one embodiment, the assembly process of the lamination structure 100 is as follows: one end of the pressing plate 10 is inserted into an insertion port 32 of the bracket 30; the other end of the pressing plate 10 is pressed downwards, so that the matching part 13 slides along the guiding part 23 of the buckle 20 to enter the clamping space 10a, and the clamping groove 11 formed on the matching part 13 is clamped with the clamping part 22 of the buckle 20. The bracket 30 and the buckle 20 together form a limit on the pressing plate 10 along the Z-axis direction, so that the pressing plate 10 firmly presses the connector 220 on the circuit board 210, and the connector 220 is prevented from falling off.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A laminate structure, comprising:

the bracket is provided with an inserting port;

the buckle has the block space, the buckle includes relative joint portion and the guide part that sets up, the guide part is including the free end and the first connecting wall of buckling connection, first connecting wall connect in joint portion, the free end is kept away from the one side deflection of joint portion, joint portion includes joint end and the second connecting wall that is connected, the second connecting wall connect in first connecting wall, when the buckle is positively placed, one side that the free end is close to first connecting wall is less than the joint end, joint portion with the guide part can elastically open in order to form the opening, the cooperation portion can by the opening gets into the block space the in-process of cooperation portion entering the block space, the guide part can with cooperation portion support to joint portion, so that the joint groove joint in the joint end.

2. The pressing structure according to claim 1, wherein the fitting portion is bent and connected to the main body portion.

3. The pressing structure according to claim 2, wherein the main body portion is provided with an avoiding opening communicated with the clamping groove, and the avoiding opening is used for accommodating the clamping end.

4. The pressing structure of claim 1, wherein the engagement end is a bead that slopes upward away from an end of the second connecting wall when the clasp is placed in the forward direction.

5. The pressing structure according to claim 1, wherein the engaging end is a plate-like structure and is disposed obliquely toward the side of the second connecting wall.

6. The pressing structure of claim 1, wherein the buckle is an integral structure formed by bending a metal elastic sheet.

7. The pressing structure according to claim 1, wherein the engaging portion and the guide portion elastically abut.

8. The pressing structure according to claim 1, wherein the insertion portion and the main body portion form a step structure, and the step structure can be abutted to the bracket.

9. A circuit board assembly, comprising:

a circuit board;

the connector is arranged on the circuit board; and

the press-fit structure of any one of claims 1-8, wherein the buckle is fixed on the circuit board, one end of the pressing plate is inserted into the bracket, and the other end of the pressing plate is clamped with the buckle so as to press the connector on the circuit board.

10. A mobile terminal comprising the circuit board assembly of claim 9.