CN107707701B

CN107707701B - Fastening structure and electronic equipment

Info

Publication number: CN107707701B
Application number: CN201711099352.7A
Authority: CN
Inventors: 李帅
Original assignee: Qiku Internet Technology Shenzhen Co Ltd
Current assignee: Qiku Internet Technology Shenzhen Co Ltd
Priority date: 2017-11-09
Filing date: 2017-11-09
Publication date: 2020-05-12
Anticipated expiration: 2037-11-09
Also published as: CN107707701A

Abstract

The invention discloses a fastening structure and electronic equipment, wherein the fastening structure comprises a cover plate and a cover plate limiting component, the cover plate covers the upper part of a flexible circuit board, and the cover plate limiting component is fixedly arranged on a main board and used for limiting the cover plate when the cover plate is inserted below the cover plate limiting component, so that a connector can be fixed on the main board by the cover plate. The invention has the characteristics of simple structure and convenient assembly and disassembly, and only the cover plate is inserted between the cover plate limiting part and the flexible circuit board during assembly, thereby greatly reducing the assembly difficulty and ensuring the smooth operation of debugging or testing.

Description

Fastening structure and electronic equipment

Technical Field

The present invention relates to the field of electronic devices, and in particular, to a fastening structure and an electronic device.

Background

The market for electronic devices is increasing in variety and the development thereof is also increasing. Taking a mobile phone as an example, as the mobile phone enters an intelligent era, the appearance of the mobile phone becomes more and more concise, the internal structure of the mobile phone becomes more and more complex, and the composition of a hardware circuit of the mobile phone becomes more and more complex. The modules, circuit boards, modules and the like except the mobile phone motherboard are mostly connected to the motherboard through an FPC (flexible circuit board) to form a complete hardware circuit. Especially, the LCD display screen, the battery, the daughter board and the like are connected with the mainboard through the butt joint of the male connector and the female connector so as to realize the signal communication with the mainboard circuit.

Different with fixed equipment, the cell-phone is as individual mobile terminal, in user's daily use, has a large amount of actions such as fall, rock or mechanical collision, and these actions can lead to the not hard up of connector lock on FPC and the mainboard, and even break away from, can cause the signal contact of module, sub circuit board and module etc. and mainboard finally bad, and then influence the complete machine function, reduce user's use and experience.

Therefore, the whole mobile phone needs to be added with a fastening device or measure for the FPC and the main board to ensure the reliability of connection between the FPC and the main board, thereby improving the reliability of the whole mobile phone.

The existing modes for reinforcing the FPC and the mainboard are mainly two, one mode is that a B shell or a battery cover is adopted for compressing and fixing, and the other mode is that a fastening steel sheet and a screw are adopted for fastening and fixing. However, the two methods have the following defects: the assembly is complicated, the B shell, the battery cover, the screws and the like are not installed on the whole machine in the debugging or testing stage that the whole machine does not finish the assembly, the mobile phone mainboard and the FPC are easy to fall off due to external force in the testing or debugging process of engineers or instruments, the testing fails, and the debugging work is repeatedly carried out.

Therefore, it is necessary to provide a new way for reinforcing the FPC and the main board.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, a first aspect of the present invention is to provide a fastening structure, which has the characteristics of simple structure and convenient assembly and disassembly, so that whether to fasten a flexible circuit board or the like to a motherboard can be freely selected during debugging or testing, thereby avoiding the repeated debugging or testing due to failure of the debugging or testing caused by the problem that the flexible circuit board or the like is not firmly connected to the motherboard.

A second aspect of the present invention is to provide an electronic apparatus having the above fastening structure.

The fastening structure according to the first aspect of the invention includes:

the cover plate covers the flexible circuit board; and

the cover plate limiting component is fixedly arranged on the main board and used for limiting the cover plate when the cover plate is inserted below the cover plate limiting component, so that the connector can be fixed on the main board by the cover plate.

According to the fastening structure of the first aspect of the invention, the cover plate is only required to be inserted below the cover plate limiting part during assembly, so that the assembly difficulty is greatly reduced, and the smooth debugging or testing work is ensured.

In addition, the fastening structure according to the first aspect of the present invention may further include the following additional technical features.

As a further alternative of the fastening structure, the cover plate stopper member is circumferentially disposed at an edge of the cover plate.

As a further alternative of the fastening structure, the cover plate limiting member includes at least one limiting member for limiting the cover plate.

As a further alternative of the fastening structure, the stopper includes:

at least one first stopper disposed at one side of an edge of the cap plate; and

the second limiting piece is arranged on the other side of the edge of the cover plate and limits the cover plate together with the first limiting piece.

As a further alternative of the fastening structure, the first limiting member is fixedly connected to the main board and located at an edge of the main board, the first limiting member includes a connecting portion fixedly connected to the main board and a limiting portion extending outward from a top end of the connecting portion, and the limiting portion is located above the cover plate and limits the cover plate.

As a further alternative of the fastening structure, the connecting portion is welded to the main plate.

As a further alternative of the fastening structure, the connecting portion is formed of a metal material that is good in toughness and easy to weld.

As a further alternative of the fastening structure, the first retaining member is formed of a metal material that is tough and easily weldable.

As a further alternative of the fastening structure, the first retaining member further includes an elastic support portion connected between the connecting portion and the retaining portion.

As a further alternative of the fastening structure, the second limiting member is fixedly disposed on the main board, and the second limiting member is located above the cover plate and limits the cover plate.

As a further alternative of the fastening structure, a side of the cover plate opposite to the flexible circuit board is further provided with foam.

As a further alternative to the fastening structure, the cover plate is formed of a high-strength steel material.

As a further alternative to the fastening structure, the cover plate has a recessed depression therein, and the cover plate retention member is receivable in the depression.

According to a second aspect of the present invention, the electronic device includes a motherboard, a connector, a plurality of flexible circuit boards, and a shielding case, wherein the shielding case is fixedly disposed on the motherboard, a gap is left between an outer wall of the shielding case and an edge of the motherboard, and the plurality of flexible circuit boards are connected to the motherboard through the connector and are located within the gap.

The electronic equipment further comprises a fastening structure, the fastening structure comprises a cover plate and a cover plate limiting component, the cover plate covers the flexible circuit board, the cover plate limiting component is located above the cover plate and used for limiting the cover plate when the cover plate is inserted below the cover plate limiting component, so that the cover plate can fix the connector on the mainboard, and the flexible circuit board is reliably connected with the mainboard.

According to the electronic device of the second aspect of the invention, due to the action of the cover plate and the cover plate limiting part, the flexible circuit board can be fastened on the connector, so that the flexible circuit board can be reliably connected with the main board, the flexible circuit board is convenient to assemble and disassemble, the assembling difficulty is greatly reduced, and the debugging or testing work of the electronic device can be smoothly carried out.

In addition, the electronic device according to the second aspect of the present invention may further include the following additional technical features.

As a further alternative of the electronic device, the cover plate restricting part includes:

As a further alternative of the electronic device, the first limiting member is disposed on the main board, and the second limiting member is disposed on the shield case.

As a further alternative of the electronic device, a bottom edge and/or a side surface of the main board is provided with a pad, and the first stopper is welded at the pad.

As a further alternative of the electronic apparatus, the second stopper is formed by folding a part of a side wall of the shield case.

As a further alternative of the electronic device, the electronic device further includes a shield support, the shield support is fixedly disposed on the motherboard, and the shield is fixedly buckled on the shield support.

As a further alternative of the electronic device, the electronic device further comprises a reinforcing steel sheet, and the reinforcing steel sheet is arranged on one surface of the flexible circuit board, which is far away from the connector.

As a further alternative of the electronic device, the electronic device further includes compressed foam, which is disposed between the cover plate and the reinforcing steel sheet.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 illustrates a block diagram of a handset provided in accordance with an implementation of the present invention;

fig. 2 is a schematic structural diagram illustrating a fastening structure for fastening a flexible circuit board and a main board according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram illustrating a first limiting member of a fastening structure for fastening a flexible circuit board and a main board according to an embodiment of the present invention;

FIG. 4 illustrates a cross-sectional view of an electronic device provided in accordance with an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram illustrating another angle of a first limiting member of a fastening structure for fastening a flexible circuit board and a main board according to an embodiment of the present invention;

fig. 7 is an expanded view of a shield case of an electronic device according to an embodiment of the present invention;

fig. 8 is a folding view of a shield case of an electronic device according to an embodiment of the present invention.

Description of the main element symbols:

10-a mobile phone; 11-an input unit; 12-a display screen; 13-a memory; 14-a processor; 16-RF circuitry; 17-a sensor; 18-an audio circuit; 19-a WiFi module; 20-a battery connection structure; 21-a loudspeaker; 22-a microphone; 111-a touch panel; 112-other input devices; 121-a display panel; 100-a cover plate; 200-a cover plate limiting part; 300-a main board; 400-a connector; 500-a flexible circuit board; 600-a shield can; 700-shield can holder; 800-reinforcing steel sheet; 900-foam cotton; 210-a first stop; 220-a second stop; 310-a pad; 610-shield top; 620-folding; 211-a connecting portion; 212-a limiting part; 213-an elastic support; 2111-side pads; 2112-bottom pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

An electronic device according to an embodiment of the present invention is provided, and for convenience of description, only a portion related to the embodiment of the present invention is shown. The electronic device may be any terminal device such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), and a vehicle-mounted computer.

Taking an electronic device as a mobile phone as an example: as shown in fig. 1, the mobile phone 10 includes a housing and components disposed within the housing, such as an input unit 11, a display 12, a memory 13, a processor 14, RF circuitry 16, a sensor 17, audio circuitry 18, a WiFi module 19, and a battery connection structure 20. Those skilled in the art will appreciate that the handset configuration shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes the components of the mobile phone 10 in detail with reference to fig. 1:

the RF circuit 16 may be used for receiving and transmitting signals during information transmission and reception or during a call, and in particular, for processing the downlink information of the base station after receiving the downlink information; in addition, the data for designing uplink is transmitted to the base station. In general, the RF circuitry 16 includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuitry 16 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to Global System for mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.

The memory 13 may be used to store software programs and modules, and the processor 14 executes various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 13. The memory 13 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 13 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 11 is operable to receive input numeric or character information and to generate key signal inputs relating to user settings and function control of the screen-scale display device 15. Specifically, the input unit 11 may include a touch panel 111 and other input devices 112. The touch panel 111 is also called a touch screen, and can collect touch operations performed by a user on or near the touch panel 111 (e.g., operations performed by the user on or near the touch panel 111 using any suitable object or accessory such as a finger or a stylus), and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 111 may include two parts, a touch detection device and a touch controller. The input unit 11 may include other input devices 112 in addition to the touch panel 111. In particular, other input devices 112 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display 12 may be used to display information entered by or provided to the user as well as various menus of the handset. The display 12 may include a display panel 121, and optionally, the display panel 121 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch panel 111 can cover the display panel 121, and when the touch panel 111 detects a touch operation on or near the touch panel, the touch operation is transmitted to the processor 14 to determine the type of the touch event, and then the processor 14 performs processing according to the type of the touch event. Although in fig. 1, the touch panel 111 and the display panel 121 are two separate components to implement the input and output functions of the mobile phone, in practice, the touch panel 111 and the display panel 121 may be integrated to implement the input and output functions of the screen ruler display device 15.

The handset 10 may also include at least one sensor 17, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel according to the brightness of ambient light, and a proximity sensor that turns off the display panel and/or the backlight when the mobile phone is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), can detect the magnitude and direction of gravity when the mobile phone is stationary, can be used for applications of recognizing the gesture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and tapping) and the like, and can also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor and the like, which are not described herein again.

Audio circuitry 18, speaker 21, microphone 22 may provide an audio interface between the user and the handset. The audio circuit 18 can transmit the electrical signal converted from the received audio data to the speaker 21, and the electrical signal is converted into a sound signal by the speaker 21 and output; on the other hand, the microphone 22 converts the collected sound signals into electrical signals, which are received by the audio circuit 18 and converted into audio data, which are then processed by the audio data output processor 14, either via the RF circuit 16 for transmission to, for example, another cell phone, or output to memory for further processing.

WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 19, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 19, it is understood that it does not belong to the essential constitution of the handset, and can be omitted entirely as needed within the scope not changing the essence of the invention.

The processor 14 is a control center of the mobile phone 10, connects various parts of the whole mobile phone 10 by various interfaces and lines, and performs various functions of the mobile phone 10 and processes data by operating or executing software programs and/or modules stored in the memory 13 and calling data stored in the memory 13, thereby performing overall monitoring of the mobile phone. Alternatively, processor 14 may include one or more processing units; preferably, the processor 14 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 14.

The handset 10 also includes a battery interface 20 for powering the various components, and preferably, the battery interface 20 is logically connected to the processor 14 via a power management system, so as to manage charging, discharging, and power consumption via the power management system.

Although not shown, the handset 10 may also include a camera, a bluetooth module, etc., which will not be described in detail herein.

It will be appreciated that the configuration shown in fig. 1 is merely illustrative and that the handset 10 may include more or fewer components than shown in fig. 1 or may have a different configuration than shown in fig. 1. The components shown in fig. 1 may be implemented in hardware, software, or a combination thereof.

In one aspect of the present invention, a fastening structure for fastening a connector to a main board is provided, and herein, a fastening structure for fastening a Flexible Printed Circuit (FPC) and a connector thereof to a main board is explained as an example. Referring to fig. 2, the fastening structure includes a cover plate 100 and a cover plate stopper 200 according to an embodiment of the present invention.

Wherein, apron 100 lid closes the top at the flexible circuit board, and apron spacing part 200 is fixed to be set up on the mainboard for when inserting apron 100 apron spacing part 200 below, spacing apron 100 carries out, make apron 100 can fix the connector on the mainboard.

So, when needs fasten flexible circuit board etc. and circuit board, only need with apron 100 insert apron spacing part 200's below can, insert apron 100 back in place, apron 100 can the pressfitting on flexible circuit board under apron spacing part 200's restriction this moment, make connector and mainboard stable connection then to accomplish the fastening work of flexible circuit board and mainboard. Equally, when needs are dismantled, only need backward take out apron 100 can, whole install and remove the process simple and conveniently for debugging or the in-process of testing, whether can freely select to fasten the flexible circuit board to the mainboard on, thereby avoided because flexible circuit board and mainboard connection not firm problem and lead to debugging or test failure, arouse debugging or test work's repetition to go on, guaranteed debugging or test work's going on smoothly then.

It should be noted that the fastening structure according to the embodiment of the present invention may be used in an electronic device such as a mobile phone and a tablet computer, and the cover plate limiting component 200 may be disposed at a suitable position of the electronic device, for example, when the fastening structure is used in a mobile phone, the cover plate limiting component 200 may be disposed on a main board or a shielding case of the mobile phone.

In some embodiments, in order to ensure stability of the cap plate 100 over the flexible circuit board and to ensure a spacing effect of the cap plate spacing member 200, the cap plate spacing member 200 may be circumferentially disposed at an edge of the cap plate 100. Thus, the cover plate limiting part 200 can limit the cover plate 100 in all directions, so that the cover plate can stably act on the flexible circuit board, and the reliable connection of the flexible circuit board and the mainboard is ensured.

According to an embodiment of the present invention, the cover plate limiting component 200 includes at least one limiting component for limiting the cover plate. It is understood that the specific shape and number of the position-limiting members can be flexibly selected according to the arrangement and number of the flexible circuit board connectors on the motherboard. Specifically, after the layout of the flexible circuit board connectors on the motherboard is determined, the shape of the cover plate may be determined according to the layout of the flexible circuit board connectors, for example, in the example shown in fig. 2, when the layout of the flexible circuit board connectors has a shape of "L" by turning, that is, the shape of letter "L" formed by sequentially arranging the touch screen FPC connector, the daughter board FPC connector, the LCD FPC connector, the battery FPC connector, and the fingerprint FPC connector in fig. 2, the cover plate 100 should also be designed into a shape of "L" to cover the flexible circuit board connectors, and at this time, the cover plate 100 does not have a regular shape, and therefore, it is desirable to use more limit pieces to form an omnidirectional limit on the cover plate 100. When the flexible printed circuit boards are arranged in a row and are linear, the cover plate 100 can be designed as a rectangular plate with a regular shape, so that a smaller number of position-limiting members can be used.

Referring to fig. 2, in the embodiment of the invention, the position-limiting members include at least one first position-limiting member 210 and at least one second position-limiting member 220.

The first limiting member 210 is disposed on one side of the edge of the cover plate 100, and the second limiting member 220 is disposed on the other side of the edge of the cover plate 100, and limits the cover plate 100 together with the first limiting member 210.

In this way, the first limiting member 210 and the second limiting member 220 limit the position of the cover plate 100 at the two side edges of the cover plate 100, so as to ensure the limiting effect of the limiting members on the cover plate 100.

As described above, referring to fig. 3, in the embodiment of the invention, the first position-limiting member 210 is fixedly connected to the motherboard and located at an edge of the motherboard, the first position-limiting member 210 includes a connecting portion 211 fixedly connected to the motherboard and a position-limiting portion 212 extending outward from a top end of the connecting portion 211, and when the cover plate 100 is inserted between the flexible circuit board and the cover plate position-limiting member 200, the position-limiting portion 212 is located above the cover plate 100 and limits the cover plate 100.

Therefore, after the first limiting member 210 is installed in place, the connecting portion 211 is fixed on the main board, and the limiting portion 212 extends from the top end of the connecting portion 211, so that the limiting portion 212 is located above the main board, and a distance is provided between the limiting portion 212 and the main board, and at this time, if the cover plate 100 is inserted between the limiting portion 212 and the flexible circuit board, it is obvious that the limiting portion 212 can limit the cover plate 100.

It should be noted that the distance between the position-limiting portion 212 and the main board may be determined according to the actual situation, for example, when the cover plate 100 is thin, the distance may be appropriately shortened. In addition, when the fastening structure in the embodiment of the invention is used in a mobile phone, some auxiliary components are arranged between the flexible circuit board and the main board, and the distance can be adjusted according to specific conditions. In summary, it is sufficient to ensure that the limiting portion 212 can stably limit the cover plate 100 when all the components are mounted in place.

In some embodiments, the connection 211 may be soldered directly to the motherboard by a board edge pad process. In this case, the connecting portion 211 is preferably made of a metal material easy to weld, and the position-limiting portion 212 is made of a hard material with a relatively low price, such as plastic, so as to reduce the manufacturing cost of the first position-limiting member 210 at least to some extent.

Of course, in other embodiments, the first limiting member 210 may also be made of the above easily-welded metal material, and the first limiting member 210 may be integrally formed by casting or other processes, thereby simplifying the manufacturing process of the first limiting member and improving the manufacturing efficiency thereof.

In some embodiments, the first limiting member 210 further includes an elastic supporting portion 213, and the elastic supporting portion 213 is connected between the connecting portion 211 and the limiting portion 212.

In this way, the installation and removal of the cover plate 100 can be further simplified by the provision of the elastic support portions 213, and the ease of installation and removal of the cover plate 100 can be improved. Specifically, when the cover plate 100 is mounted, one side of the cover plate 100 may be inserted under the second limiting member 220, and the other side of the cover plate 100 may be pressed and inserted under the limiting portion 212 of the first limiting member 210. When the cover plate is disassembled, the first position-limiting member 210 may be pushed a distance away from the main plate, such that the range between the first position-limiting member 210 and the second position-limiting member 220 is large enough to facilitate the cover plate 100 to be taken out, and then the first position-limiting member 210 may naturally return to the original position under the elastic restoring force of the elastic supporting portion 213. Of course, when the cover plate 100 is installed, the first limiting member 210 may be pushed to a certain distance, and then the cover plate 100 is placed between the first limiting member 210 and the second limiting member 220.

In some embodiments, the cover plate 100 may be made of a high-strength steel material, such that the cover plate 100 has a certain elastic effect, such that when the cover plate 100 is disassembled, once the first limiting member 210 is pushed, the cover plate 100 can automatically separate from the constraint of the first limiting member 210 and the second limiting member 220 under the elastic action of the cover plate 100, thereby further improving the convenience of disassembling the cover plate 100.

In the embodiment of the invention, the second limiting member 220 is fixedly disposed on the main board, and the second limiting member 220 is located above the cover plate 100 and limits the cover plate 100.

As mentioned above, in the embodiment of the present invention, the second limiting member 220 is fixedly connected to the shielding case of the mobile phone, and the specific structure and the forming manner of the second limiting member 220 are described in detail below.

In some embodiments, the cover plate 100 has a recessed recess (not shown), and the cover plate limiting member 200 can be received in the recessed recess.

Specifically, both sides of the cover plate 100 are provided with recessed portions, and the shapes and the number of the recessed portions are respectively adapted to the first limiting member 210 and the second limiting member 220. Through the arrangement of the recessed portion, a positioning effect can be formed on the first limiting member 210 and the second limiting member 220, so that the first limiting member 210 and the second limiting member 220 are prevented from moving on the cover plate 100, and a limiting effect of the first limiting member 210 and the second limiting member 220 on the cover plate 100 is further ensured.

In addition to the above, in some embodiments, the side of the cover plate 100 opposite to the flexible circuit board is further provided with a foam 900. Preferably, the foam 900 is an insulating compressed foam, and the compressed foam can protect the contact surface between the cover plate 100 and the flexible circuit board on one hand, and can also improve the tightness of the press fit between the cover plate 100 and the flexible circuit board under the action of the first limiting member 210 and the second limiting member 220 on the other hand.

In another aspect of the invention, an electronic device is provided. According to an embodiment of the present invention, referring to fig. 2 or 4, the electronic device includes a motherboard 300, a connector 400, a plurality of flexible circuit boards 500, and a shielding cover 600, wherein the shielding cover 600 is fixedly disposed on the motherboard 300, a gap is left between an outer wall of the shielding cover 600 and an edge of the motherboard 300, and the plurality of flexible circuit boards 500 are connected to the motherboard 300 through the connector 400 and are within the gap. In addition, the electronic device further includes a fastening structure, the fastening structure includes a cover plate 100 and a cover plate limiting component 200, the cover plate 100 covers the flexible circuit board 500, and the cover plate limiting component 200 is located above the cover plate 100 and used for limiting the cover plate 100 when the cover plate 100 is inserted below the cover plate limiting component 200, so that the cover plate 100 can fix the connector 400 on the motherboard 300, and the flexible circuit board 500 and the motherboard 300 can be reliably connected.

Specifically, the connector 400 includes a male connector seat welded to the flexible circuit board 500 and a female connector seat welded to the motherboard 300, and in actual operation, the flexible circuit board 500 is connected to the motherboard 300 by snapping the male connector seat into the female connector seat. The fastening structure has the function of ensuring the connection reliability of the male connector seat and the female connector seat. As described above, since the cover plate 100 covers the flexible circuit board 500 and the cover plate spacing member 200 is located above the cover plate 100, when the cover plate 100 is inserted below the cover plate spacing member 200, the male connector housing and the female connector housing are pressed and spaced, thereby ensuring the reliability of the connection between the flexible circuit board 500 and the motherboard 300.

Meanwhile, in combination with the above, the cover plate 100 may be designed to be a sheet shape by using a high strength steel material, and when the flexible circuit board 500 and the main board 300 are fastened by using the sheet-shaped cover plate 100, the sheet-shaped cover plate does not occupy a large space in thickness of the electronic device, thereby facilitating the development of light and thin electronic devices, such as a mobile phone with lighter weight.

Further, the cover plate limiting component 200 includes at least one first limiting member 210 and at least one second limiting member 220.

In the embodiment of the invention, in combination with the above, the first position-limiting member 210 can be directly welded on the main board 300. At this time, in order to meet the welding requirement of the first limiting member 210, the pad 310 needs to be disposed on the main board 300.

Referring to fig. 5, the position of the bonding pads 310 is designed in the gaps between the flexible circuit boards 500, so as to avoid damaging the circuit on the flexible circuit boards during the assembly process, and the width of the bonding pads is determined according to the gaps. In order to ensure the welding effect, the width of the bonding pad is generally required to be more than 1 mm. For example, in the example shown in FIG. 5, the pad width of the pad 310 on the sidewall of the motherboard is a, a ≧ 1mm, and the pad width of the pad 310 on the upper and lower surfaces of the motherboard is b, b ≧ 0.2 mm.

After the pad position is set, the first position-limiting member 210 needs to be welded to the pad 310 position. Referring to fig. 3, pads are correspondingly disposed on the first limiting member 210, and include side pads 2111 welded to the side walls of the motherboard and bottom pads 2112 welded to the bottom surface of the motherboard. It is understood that the size of the bonding pads on the first position-limiting member 210 should correspond to the size of the bonding pads 310 on the main board 300, so as to ensure good welding between the first position-limiting member 210 and the main board 300. Referring to fig. 6, the width of each of the side pads 2111 and the bottom pad 2112 along the direction of the motherboard sidewall is a, the bottom pad 2112 further has a dimension b extending inward, and the side pad 2111 further has a dimension t corresponding to the thickness of the motherboard 300, so as to ensure the perfect butt joint between the pad on the first stopper 210 and the pad 310 on the motherboard 300.

In some embodiments, the shielding cover 600 is also fixedly disposed on the motherboard, when the limiting component 200 is disposed on the shielding cover 600, after the cover plate 100 is inserted below the cover plate limiting component 200, the limiting component 200 both plays a role of limiting the cover plate 100, so that the cover plate 100 can fix the connector on the motherboard, and meanwhile, the shielding cover 600, the cover plate 100 and the limiting component 200 can all be made of metal materials to form a shielding whole body together for shielding signal interference. Preferably, the pads 310 on the motherboard 300 are electrically connected to the ground reference, and when the side pads 2111 and the bottom pads 2112 and the pads 310 are soldered together, the cover board 100 and the position limiting component 200 can be reliably connected to the ground reference, so that the FPC and its connector can be in a shielding integrity to prevent the FPC from being subjected to electromagnetic interference.

It should be noted that the side land 2111 and the bottom land 2112 are the connecting portion 211 described above, wherein the bottom land 2112 is connected to the bottom of the side land 2111 and can be bent, and in the actual welding process, the side land 2111 may be welded to the side wall of the motherboard 300, and then the bottom land 2112 is bent to be further welded.

It is understood that the connection between the first limiting member 210 and the main board 300 can be realized only by providing the side pads 2111 or the bottom pads 2112.

In other embodiments, in order to connect the first limiting member 210 to the main plate 300, the first limiting member 210 may be fixedly connected to the edge of the main plate 300 by a mechanical method, such as a screw, a bolt, or the like.

Referring to fig. 3-6, in combination with the above description, the first position-limiting member 210 can be integrally formed. At this time, in order to form the limiting portion 212, the top end of the first limiting member 210 is bent. In practical operation, the first limiting member 210 may be formed by injection molding according to the above dimensions and the distance between the limiting portion 212 and the main plate 300. Of course, a metal sheet with good toughness and easy welding can be selected first, and then the metal sheet can be cut at the later stage.

In an embodiment of the invention, referring to fig. 7-8, the second position-limiting member 220 may be formed by the shielding can 600 itself, and specifically may be formed by folding a part of the sidewall of the shielding can 600.

Referring to fig. 7, a sheet made of an insulating material, such as copper foil, is selected, and then cut into a desired shape to form a top portion 610 of the shielding case and foldable flanges 620 arranged around the top portion of the shielding case, wherein each of the foldable flanges 620 is foldable independently (when each of the foldable flanges 620 is folded, the foldable flange 620 forms a side surface of the shielding case 600, and the top portion 610 of the shielding case forms a top surface of the shielding case 600). And then, selecting a proper folding edge 620 (the folding edge 620 should be close to the flexible circuit board 500) to perform secondary cutting so as to cut out the second limiting member 220, and then cutting the folding edge 620 along the direction from the folding edge 620 to the top 610 of the shielding case until the cutting line reaches the edge of the top 610 of the shielding case, so that the part cut by the folding edge 620 and the top 610 of the shielding case are integrated. Finally, each folded edge 620 is folded by 90 degrees, so that the sheet forms a closed cavity, at this time, since the part cut from the folded edge 620 is integrated with the top 610 of the shielding case, the second limiting member 220 is formed after folding, and the second limiting member 220 and the top 610 of the shielding case are in the same plane.

Of course, in other embodiments, the second position-limiting member 220 may be connected to the sidewall of the shielding can 600 through a subsequent process. Subsequent processes include, but are not limited to, welding, mechanical attachment, and the like.

Referring to fig. 4, in some embodiments, in order to improve the stability of the shield can 600 on the motherboard 300 and prevent the shield can 600 from deforming, a shield can bracket 700 is further fixed on the motherboard 300, and the shield can 600 is fixedly fastened on the shield can bracket 700.

Further, the shielding cover 600 and the shielding bracket 700 are further provided with a snap fastening device, so that the shielding cover 600 and the shielding bracket 700 are combined more firmly.

With continued reference to fig. 4, in some embodiments, the electronic device further includes a reinforcing steel sheet 800, the reinforcing steel sheet 800 is disposed on a side of the flexible circuit board 500 away from the connector 400, and the presence of the reinforcing steel sheet 800 facilitates the reinforcement of the operation section of the flexible circuit board 500, and facilitates the assembly and the fastening with the connector 400.

As will be apparent from the above description of the structure and features of the present invention, the fastening structure provided by the embodiment of the present invention not only allows the flexible circuit board 500 to be disposed on one side of the motherboard 300, but also on the other side of the motherboard 300.

As is apparent from the above description of the embodiments of the present invention, the present invention has at least the following technical effects:

1. the assembly and disassembly are convenient, the debugging or testing work is favorably and smoothly carried out, and the later maintenance is favorably realized;

2. the thickness of the whole electronic equipment can be effectively reduced, and the development of light and thin is facilitated;

3. the battery cover is prevented from being used for fastening, so that the battery cover is not influenced, and the appearance of the electronic equipment is not influenced;

4. the punching on the main board is avoided, so that the layout and wiring of the electronic equipment are facilitated;

5. the manufacturing is simple, and the cost is low;

6. the existence of the fastening structure enables the flexible circuit board to realize double-sided layout on the mainboard.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

The present embodiment also provides the following solutions:

a1, a fastening structure, comprising:

the cover plate covers the connector; and

A2, the fastening structure of a1, wherein the cover plate limiting member is circumferentially arranged at an edge of the cover plate.

A3, the fastening structure according to a1 or a2, wherein the cover plate limiting component comprises at least one limiting member for limiting the cover plate.

A4, the fastening structure according to A3, wherein the stopper includes:

A5, the fastening structure according to a4, wherein the first limiting member is fixedly connected to the main board and located at an edge of the main board, the first limiting member includes a connecting portion fixedly connected to the main board and a limiting portion extending outward from a top end of the connecting portion, and the limiting portion is located above the cover plate and limits the cover plate.

A6, the fastening structure of a5, wherein the connecting part is welded to the main board.

A7, the fastening structure according to a6, wherein the connecting part is made of a tough and easily weldable metal material.

A8, the fastening structure according to a5, wherein the first position limiting member is made of a tough and easily weldable metal material.

A9, the fastening structure according to a5, wherein the first retaining member further comprises an elastic support portion connected between the connecting portion and the retaining portion.

A10, the fastening structure according to a4, wherein the second limiting member is fixedly disposed on the main plate, and the second limiting member is located above the cover plate and limits the cover plate.

A11, the fastening structure of A1, wherein the side of the cover plate opposite to the flexible circuit board is also provided with foam.

A12, the fastening structure according to a1, wherein the cover plate is formed of a high-strength steel material.

A13, the fastening structure of a1, wherein the cover plate has a concave recess, and the cover plate position-limiting component can be received in the recess.

B14, an electronic device, comprising a motherboard, a connector, a plurality of flexible circuit boards and a shielding case, wherein the shielding case is fixedly arranged on the motherboard, a gap is left between the outer wall of the shielding case and the edge of the mainboard, a plurality of flexible circuit boards are connected on the mainboard through the connector and are positioned in the range of the gap, wherein the electronic equipment also comprises a fastening structure, the fastening structure comprises a cover plate and a cover plate limiting part, the cover plate covers the upper part of the flexible circuit board, the cover plate limiting part is positioned above the cover plate and used for inserting the cover plate below the cover plate limiting part, and limiting the cover plate to ensure that the cover plate can fix the connector on the mainboard, thereby realizing the reliable connection of the flexible circuit board and the mainboard.

B15, the electronic equipment of B14, wherein, the apron spacing part includes:

B16 the electronic apparatus of B15, wherein the first stopper is disposed on the main board, and the second stopper is disposed on the shield case.

B17, the electronic device according to B16, wherein the bottom edge and/or the side of the main board is provided with a pad, and the first limiting member is welded at the pad.

The electronic device according to B18 and B16, wherein the second stopper is formed by folding a part of a side wall of the shield case.

B19, as B14 the electronic equipment, wherein, the electronic setting still includes the shield cover support, the shield cover support is fixed to be set up on the mainboard, the fixed knot of shield cover is established on the shield cover support.

B20, the electronic device as B14, wherein the electronic device further comprises a reinforcing steel sheet, and the reinforcing steel sheet is arranged on one surface of the flexible circuit board, which faces away from the connector.

B21, the electronic device according to B20, wherein the electronic device further comprises compressed foam, and the compressed foam is arranged between the cover plate and the reinforcing steel sheet.

Claims

1. A fastening structure, comprising:

the cover plate covers the connector; and

the cover plate limiting component is fixedly arranged on the main board and used for limiting the cover plate when the cover plate is inserted below the cover plate limiting component, so that the connector can be fixed on the main board by the cover plate;

the cover plate limiting component comprises at least one limiting piece for limiting the cover plate;

the stopper includes:

at least one first stopper disposed at one side of an edge of the cap plate;

the first limiting part is fixedly connected to the mainboard and located at the edge of the mainboard, the first limiting part comprises a connecting part fixedly connected with the mainboard and a limiting part extending outwards from the top end of the connecting part, and the limiting part is located above the cover plate and is limited to the cover plate.

2. The fastening structure according to claim 1, wherein the cover-plate-restricting member is circumferentially arranged at an edge of the cover plate.

3. The fastening structure according to claim 1, wherein the retaining member comprises:

4. The fastening structure according to claim 1, wherein the connecting portion is welded to the main plate.

5. The fastening structure according to claim 4, wherein the connecting portion is formed of a tough and easily weldable metal material.

6. The fastening structure according to claim 1, wherein the first retaining member is formed of a tough and easily weldable metal material.

7. The fastening structure according to claim 1, wherein the first retaining member further comprises an elastic support portion connected between the connecting portion and the retaining portion.

8. The fastening structure according to claim 3, wherein the second retaining member is fixedly disposed on the main plate, and the second retaining member is located above the cover plate and retains the cover plate.

9. The fastening structure of claim 1, wherein the cover plate covers the flexible circuit board, and foam is further disposed on a surface of the cover plate opposite to the flexible circuit board.

10. The fastening structure according to claim 1, wherein the cover plate is formed of a high-strength steel material.

11. The fastening arrangement of claim 1, wherein said cover has a recessed depression therein, said cover retention element being receivable in said depression.

12. An electronic device comprises a mainboard, a connector, a plurality of flexible circuit boards and a shielding case, wherein the shielding case is fixedly arranged on the mainboard, a gap is left between the outer wall of the shielding case and the edge of the mainboard, a plurality of flexible circuit boards are connected on the mainboard through the connector and are positioned in the range of the gap, characterized in that the electronic equipment also comprises a fastening structure, the fastening structure comprises a cover plate and a cover plate limiting component, the cover plate covers the upper part of the flexible circuit board, the cover plate limiting part is positioned above the cover plate and used for inserting the cover plate below the cover plate limiting part, and limiting the cover plate to ensure that the cover plate can fix the connector on the mainboard, thereby realizing the reliable connection of the flexible circuit board and the mainboard.

13. The electronic device of claim 12, wherein the cover limiting member comprises:

14. The electronic device of claim 13, wherein the first retaining member is disposed on the motherboard and the second retaining member is disposed on the shield case.

15. The electronic device according to claim 14, wherein a bottom edge and/or a side surface of the main board is provided with a pad, and the first stopper is soldered at the pad.

16. The electronic device of claim 14, wherein the second retaining member is formed by folding a portion of a sidewall of the shield case.

17. The electronic device of claim 12, wherein the electronic arrangement further comprises a shield support fixedly disposed on the motherboard, the shield fixedly retained on the shield support.

18. The electronic device according to claim 12, further comprising a reinforcing steel sheet provided on a side of the flexible circuit board facing away from the connector.

19. The electronic device of claim 18, further comprising a compression foam disposed between the cover plate and the sheet of reinforcement steel.