CN116053829A - Flat cable connector and electronic equipment - Google Patents

Flat cable connector and electronic equipment Download PDF

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Publication number
CN116053829A
CN116053829A CN202111261385.3A CN202111261385A CN116053829A CN 116053829 A CN116053829 A CN 116053829A CN 202111261385 A CN202111261385 A CN 202111261385A CN 116053829 A CN116053829 A CN 116053829A
Authority
CN
China
Prior art keywords
flat cable
cable connector
base structure
circuit board
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111261385.3A
Other languages
Chinese (zh)
Inventor
楼夏云
沈冬冬
柯建东
卢兵
洪新江
张颖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Xinfuer Electronics Co ltd
Shanghai Haisi Technology Co ltd
Original Assignee
Zhejiang Xinfuer Electronics Co ltd
Shanghai Haisi Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Xinfuer Electronics Co ltd, Shanghai Haisi Technology Co ltd filed Critical Zhejiang Xinfuer Electronics Co ltd
Priority to CN202111261385.3A priority Critical patent/CN116053829A/en
Priority to PCT/CN2022/127671 priority patent/WO2023072142A1/en
Publication of CN116053829A publication Critical patent/CN116053829A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/78—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures connecting to other flexible printed circuits, flat or ribbon cables or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces

Abstract

The application provides a flat cable connector and electronic equipment. The flat cable connector includes: the base structure, a plurality of conduction components and a cover body; the plurality of conducting components are spliced on the base structure, each conducting component is provided with a first connecting end and a second connecting end, the first connecting ends of the plurality of conducting components are used for being connected with a flat cable, each first connecting end is provided with an arc-shaped contact surface of the flat cable, and the second connecting ends are used for being connected with a circuit board; the cover body is arranged on the plurality of conducting components and is used for covering and pressing the flat cable when the flat cable is placed on the arc-shaped contact surface of the first connecting end. The conducting component can realize connection between the circuit board and the flat cable. The arc contact surface of the conducting component is connected with the flat cable, and the mode of surface connection between the conducting component and the flat cable can enable the impedance consistency of the conducting component to be higher, is beneficial to the transmission of high-speed signals, and enables the flat cable connector to have stronger capability of transmitting the high-speed signals.

Description

Flat cable connector and electronic equipment
Technical Field
The application relates to the technical field of electronics, in particular to a flat cable connector and electronic equipment.
Background
Currently, flexible flat cable (flexible flat cable, FFC)/flexible circuit board (flexible printed circuit, FPC) flat cable connectors are commonly used inside thinned products. FFC/FPC flat cable connectors are commonly used to interconnect signals between a circuit board and flat cables. With the increase of signal transmission rate, the requirement for the high-speed signal capability of FFC/FPC flat cable connector is also increasing. Conductive elements in a flat cable connector are typically used to transmit signals between a circuit board and a flat cable. After the flat cable is embedded (inserted) into the existing flat cable connector, a contact point arranged at one end of the conducting component in the flat cable connector is in contact connection with the flat cable. The conducting component in the existing flat cable connector is contacted with the flat cable through the contact point, so that the impedance consistency is poor, the transmission of high-speed signals is not facilitated, and the capability of the existing connector for supporting the transmission of the high-speed signals is poor.
Disclosure of Invention
The application provides a flat cable connector and electronic equipment, which have strong capability of transmitting high-speed signals.
In a first aspect, the present application provides a flat cable connector that may be used for connection between a circuit board and a flat cable. The connector may include: the base structure, a plurality of conduction components and a cover body; the plurality of conducting components are inserted in the base structure side by side, each conducting component is provided with a first connecting end and a second connecting end, the first connecting ends of the plurality of conducting components are used for being connected with a flat cable, each first connecting end is provided with an arc-shaped contact surface for being connected with the flat cable, and the second connecting ends are used for being connected with a circuit board. The cover body is arranged on the plurality of conducting components to the upper part and is used for covering and pressing the flat cable when the flat cable is placed on the arc-shaped contact surface of the first connecting end. The conducting component can realize connection between the circuit board and the flat cable. In general, the uniformity of the impedance of the conductive element, which may also be referred to as impedance continuity, may refer to the relative change in impedance of the conductive element as a signal continues to pass through the conductive element over a period of time. The impedance of the conductive component is relatively small, which can reflect that the impedance consistency of the conductive component is relatively high, and the impedance of the conductive component is relatively poor. According to the technical scheme, the arc-shaped contact surface of the conducting component in the flat cable connector is connected with the flat cable, and the conducting component is connected with the flat cable in a surface connection mode, so that the impedance consistency of the conducting component can be improved, the transmission of high-speed signals is facilitated, and the flat cable connector has strong high-speed signal transmission capability.
In a specific embodiment, each of the first connection ends may also be provided with a plug-in portion. The base structure may include a plurality of first through holes and a first recess corresponding to each first through hole. For each conducting component, the plugging part of the first connecting end of the conducting component can be inserted into the first groove of the base structure, and the plugging mode can be marked as plugging, so that the plugging of the conducting component and the base structure is realized. The first groove on the base structure can have a limiting effect on the conducting component, when the arc-shaped contact surface of the conducting component receives the positive pressure of the wire arrangement, the arc-shaped contact surface moves downwards, the inserting part can be continuously inserted into the first groove, the arc-shaped contact surface receives the positive pressure of the wire arrangement to be reduced or zero, the arc-shaped contact surface moves upwards, and the inserting part cannot be separated from the first groove. Typically, the first plurality of grooves of the base structure may be disposed side by side, so that the plurality of conductive assemblies may be plugged side by side on the base structure.
In a specific embodiment, the width of the arcuate contact surface along the mating direction of the conductive assembly is determined based on a predetermined impedance and the electrical characteristics of the material. The width of the arcuate contact surface may affect the impedance of the conductive element. The width of the arc contact surface of the conductive element can be designed according to the preset impedance and the electrical characteristics of the conductive element material, such as conductivity, dielectric constant, etc. By the design, the impedance of the conducting component is in the impedance range corresponding to the preset impedance, so that the consistency of the interconnection impedance between the flat cable and the circuit board is improved, the high-frequency performance of the conducting component is improved, the conducting component has smaller contact impedance, and the high-speed signal transmission is facilitated. In general, the preset impedance may be a reference value required by the signal transmission system to which the flat cable connector and the circuit board belong for the impedance between the flat cable connector and the circuit board.
In a specific embodiment, the width of the arcuate contact surface is no greater than 0.2 mm in the plugging direction of the conductive assembly. The width of the arc contact surface is in a certain range, so that the impedance of the conducting component is in a certain impedance range, the requirement of interconnection impedance between the flat cable and the circuit board is met, and the volume of the flat cable connector can be reduced.
In a specific embodiment, the width of the arc-shaped contact surface is not less than 0.15 mm along the plugging direction of the conductive component. The conducting component can be formed by adopting a bending forming process, and the width of the arc-shaped contact surface can be not less than 0.15 millimeter under the conditions of signal transmission reliability and process permission. The width of the arcuate contact surface may also be less than 0.15 mm as the process progresses.
In a specific embodiment, the first connection end and the second connection end have the same width along the plugging direction of the conductive component. In the technical scheme, the conducting component has better impedance consistency and is beneficial to the transmission of high-speed signals.
In a specific embodiment, the thickness of the first connection end and the second connection end is the same along the plugging direction of the conductive component. In the technical scheme, the thicknesses of the two ends of the conduction assembly are consistent, so that the impedance consistency of the conduction assembly can be further improved, and the high-speed signal transmission is facilitated.
In a specific embodiment, the flat cable connector may further include a connection assembly. One end of the connecting component is fixed on the base structure, and the other end of the connecting component is hinged with the cover body. In the technical scheme, the cover body can be arranged on the base structure through the connecting component and can be rotated to be opened and closed, so that the flat cable is conveniently embedded into the rear cover pressing flat cable.
In a specific embodiment, the connection assembly includes a first stop; the first limiting part is provided with a groove used for being hinged with the cover body, and the extending direction of the groove is far away from the conducting assembly so as to limit the cover body to be separated from the base structure. In the technical scheme, the grooves of the first limiting parts of the connecting assemblies can prevent the cover body from moving relatively with the base structure when the flat cable is embedded or removed.
In a specific embodiment, the flat cable connector may further include at least one positioning assembly; the positioning assembly is provided with a positioning part and a welding part; the positioning part is inserted into the base structure; the welding part is used for welding with the circuit board. In the technical scheme, the positioning part of the positioning assembly is spliced with the base structure, the welding part can be welded with the circuit board, so that the base structure is fixedly connected with the circuit board, the connection stability between the base structure and the circuit board is improved, and the risk that the flat cable connector is separated from the circuit board can be reduced.
In a specific embodiment, the orientation component is plugged in a direction opposite to the direction in which the pass-through component is plugged. The plugging direction of the positioning component is opposite to the plugging direction of the conducting component, so that the base structure and the conducting component can be prevented from being separated, and the bursting strength of a circuit board connected with the flat cable connector can be improved. Such a design may also enable the flat cable to be inserted into the flat cable connector or disengaged from the base structure and circuit board when removed from the flat cable connector.
In a specific embodiment, the solder portion of the positioning assembly is connected to a ground line of the circuit board; the positioning assembly further comprises a contact portion, wherein the contact portion is used for being connected with a grounding wire of the flat cable. In the above technical scheme, the positioning component can also have a grounding function. The ground terminal is not required to be additionally added in the flat cable connector, so that the production cost can be reduced, and the volume or thickness of the flat cable connector can be reduced.
In a specific embodiment, the positioning assembly further comprises a stop; the blocking surface is used for preventing the flat cable from being tilted upwards. According to the technical scheme, the blocking surface on the blocking part of the positioning assembly can apply force for preventing the flat cable from being tilted upwards to the flat cable when the flat cable is tilted upwards, so that the cover body is prevented from being sprung open or loose due to the fact that the flat cable is tilted upwards. The blocking part of the positioning component can improve the connection stability between the cover body of the flat cable connector and the base structure.
In a specific implementation mode, two ends of the cover body are provided with rotary convex shafts, and the base structure is provided with limiting surfaces; the positioning part is provided with a step surface; the step surface and the limit surface form a limit groove, and the rotary protruding shaft is rotatably arranged in the limit groove. In the above technical scheme, the locating component can have a limiting effect on the cover body. The positioning portion of the positioning assembly may be formed with a stepped surface. The step surface and the limiting surface of the base can form a limiting groove to limit the rotary convex shaft of the cover body. The design can further improve the connection stability of the cover body and the base structural member.
In a second aspect, an electronic device is provided that may include a circuit board and a flat cable connector as in the first aspect and any of the possible embodiments. A flat cable connector may be used to make electrical connection between the circuit board and the flat cable. In the technical scheme, the flat cable is connected with the arc-shaped contact surface of the conducting component in the flat cable connector, the arc-shaped contact surface is smaller in contact impedance with the flat cable, and the impedance consistency is higher, so that the flat cable connector can support transmission of high-speed signals between the flat cable and the circuit board. The electronic device may also include a flat cable.
In a specific embodiment, the electronic device may include a display system. The circuit board is a circuit board of an application processor (application processor, AP) in the display system, and the flat cable is a flat cable on a Timing Controller (TCON) in the display system. In the above technical scheme, the flat cable connector can be used for connecting the circuit board of the AP and the flat cable on the TCON chip, and supporting high-speed signal transmission between the AP and the TCON.
In a specific embodiment, the flat cable connector may be used to transmit at least one of a video data stream, an audio data stream, a control signal, or power supply. And the flat cable connector can support the capability of high-speed transmission of video data streams, audio data streams, control signals, power supply energy and the like.
Drawings
Fig. 1 is an application scenario schematic diagram of a flat cable connector provided in an embodiment of the present application;
FIG. 2 is an exploded view of a flat cable connector according to an embodiment of the present application;
fig. 3 is a schematic diagram of a plugging direction of a conductive component according to an embodiment of the present application;
FIG. 4 is a schematic diagram of the width of a conductive element according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a conductive component according to an embodiment of the present application;
fig. 6 is a schematic diagram of the cooperation between the connection assembly and the cover provided in the embodiment of the present application;
FIG. 7 is a schematic structural diagram of a positioning assembly according to an embodiment of the present disclosure;
fig. 8 is a schematic diagram of connection between a contact portion of a positioning assembly and a ground line of a flat cable according to an embodiment of the present disclosure;
fig. 9 is a schematic diagram of a plugging direction of a positioning component and a plugging direction of a conducting component according to an embodiment of the present application;
fig. 10 is a schematic diagram of a limiting groove formed by a positioning portion and a base structure of a positioning assembly according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings. In order to facilitate understanding of the advantages of the connector provided in the embodiments of the present application, the following first describes an application scenario thereof.
The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application and the appended claims, the singular forms "a," "an," and "the" are intended to include, for example, "one or more" such forms of expression, unless the context clearly indicates to the contrary. It should also be understood that in the following embodiments of the present application, "at least one" means one, two, or more than two.
Reference in the specification to "one embodiment" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in various places throughout this specification are not necessarily all referring to the same embodiment, but mean "one or more, but not all, embodiments" unless expressly specified otherwise. The terms "comprising," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
As shown in fig. 1, the FFC/FPC flat cable connector is generally used for signal interconnection between boards inside a slim product. For example, the flat cable connector may be applied to a connection between a processor and a chip in a display system. For example, a flat cable connector may connect between a host AP and a TCON chip in a display system. The AP may be disposed on a circuit board connected by a flat cable connector, and the flat cable connected by the flat cable connector may be a flat cable on a TCON chip. The flat cable connector can be used for data transmission between the AP and the TCON chip, such as video stream, audio stream, control signal, power supply, etc. The flat cable connector can also support transmission of ultra-high definition audio and video data streams. With the increase of the signal transmission rate, the capability of the flat cable connector to support high-speed signal transmission is also required to be improved. The application provides a flat cable connector with stronger high-speed signal transmission capability.
Referring to fig. 2, the flat cable connector provided in the present application may include a plurality of conductive components 210, a base structure 220, and a cover 230 for covering the flat cable. In fig. 3, the plugging direction (which may be referred to as a first direction) of the conductive components 210 with the base structure 220 is shown, and each conductive component 210 may be plugged onto the base structure 220. In fig. 4, a top view of the conductive element 210 is shown, the conductive element 210 having a first connection terminal 211 and a second connection terminal 212. The first connection terminals 211 of the plurality of conductive elements 210 may be used to connect the flat cable. Each first connection end 211 is provided with an arc-shaped contact surface 211A connecting the flat cables. The second connection end 212 of the conductive assembly 210 may be used to connect a circuit board. In general, a plurality of conductive assemblies 210 may be plugged side-by-side onto the base structure 220. The cover 230 may be disposed over the conductive members 210 for covering the flat cable when the flat cable is disposed over the arc-shaped contact surface 211A of the first connection end 211 of the conductive members 210. Such a design allows the flat cable to be electrically connected to the circuit board through the conductive assembly 210. The flat cable may transmit data, signals, etc. with the circuit board.
Compared to the conventional connector in which the conductive element and the flat cable are in "point contact", in the flat cable connector provided in the present application, the arc-shaped contact surface 211A of the conductive element 210 is connected to the flat cable, i.e., the flat cable is in "surface contact" with the conductive element 210. Under the condition of 'surface contact', the impedance consistency is better, and the transmission of high-speed signals is facilitated.
In one possible design, the width of the arcuate contact surface 211A of the conductive element 210 may be determined based on a predetermined impedance and electrical characteristics (e.g., conductivity, dielectric constant, etc.) of the material along the first direction (i.e., the mating direction of the conductive element 210 with the base structure 220). The material of the conductive assembly 210 includes, but is not limited to, copper, iron, aluminum, and the like. In practice, the width of the arcuate contact surface 211A may be determined based on predetermined impedance and electrical characteristics of the material, and the conductive assembly 210 may be manufactured or fabricated based on the determined width of the arcuate contact surface 211A. It can be seen that by varying the width of the arcuate contact surface 211A, the impedance of the conductive element 210 can be flexibly adjusted to enable the flat cable connector to support high speed signal transmission.
In one example, a signal transmission system to which a flat cable and a circuit board to which a flat cable connector is connected typically has a required reference value (hereinafter referred to as an impedance reference value) or a required reference range/set (hereinafter referred to as an impedance reference range) for an impedance of an interconnection between the flat cable and the circuit board. For example, the required reference value may be R, and the required reference range may be R-ref to R+ref. The preset impedance may be the required reference value R or a value within the required reference range. The width of the arc-shaped contact surface 211A is within a predetermined width range, so that the impedance of the conductive element 210 may be a predetermined impedance, such as the aforementioned required reference value R, or a value within a required reference value range. Increasing the width of the arc-shaped contact surface 211A within the predetermined width range may increase the impedance of the conductive element 210, or may decrease the impedance of the conductive element 210, but the impedance of the conductive element 210 may be within the above-mentioned required reference value range. In some signaling scenarios, the impedance reference may be 90 ohms, with the impedance reference range including values approaching 90 ohms.
In the conventional flat cable connector, the conductive member is generally integrated with the fixed terminal, and has an irregular shape, which is generally called a signal terminal. In the manufacturing process, the shape of the signal terminal needs to be etched on the metal plate, and the signal terminal is formed by utilizing a cutting process. In the flat cable connector, the side of the signal terminal, which is contacted with the flat cable, is a cutting surface.
While the arcuate contact surface 211A of the conductive element 210 is a rolled surface in this application. Compared with the cutting surface, the roughness of the rolled surface is small. Under the same contact area, the impedance consistency of the conductive component 210 in the flat cable connector provided by the application is better, and the flat cable connector can also be beneficial to high-speed signal transmission.
In one possible design, as shown in fig. 4 (a), the width of the arcuate contact surface 211A may be no greater than 0.2 millimeters. In another possible design, the width of the arcuate contact surface 211A may be no less than 0.15 millimeters as shown in (b) of fig. 4, in accordance with current manufacturing processes. As the manufacturing process increases, the width of the arcuate contact surface 211A may be less than 0.15 millimeters. It should be understood that the width of the arc-shaped contact surface 211A is within a certain range, so that the impedance of the conductive element 210 can be the impedance reference value or a value within the impedance reference range, which is beneficial to the transmission of the high-speed signal.
In one example, the width of the first connection end 211 and the width of the second connection end 212 of the conductive component 210 may be in the interval of 0.15-0.2 mm along the plugging direction of the conductive component 210, and the impedance of the conductive component 210 may be a value in the impedance reference range, where the reliability and the manufacturing process allow. The insertion loss of the pass-through component 210 can also be optimized, facilitating the transmission of high-speed signals. For example, in some simulation scenarios, where the width of the pass-through component is 0.15 millimeters, the interconnect-impedance pit location of the pass-through component 210 may be raised by 14 ohms, the insertion loss may be improved by 0.21dB at the 6GHz frequency point, and the 10GHz frequency point may be improved by 0.35dB. As can be seen, the conductive component 210 provided in the embodiment of the present application has better high-frequency performance. Alternatively, the distance between adjacent conductive components 210 may be the same. For example, the distance between adjacent conductive members 210 may be not greater than 0.35 mm or not less than 0.3 mm.
In another example, along the plugging direction of the conductive component 210, the widths of the first connection end 211 and the second connection end 212 of the conductive component 210 are the same, that is, the width of the arc-shaped contact surface 211A of the conductive component 210 is the same as the width of the second connection end. Such a design may promote impedance uniformity of the conductive element 210, i.e., the conductive element 210 has better impedance continuity. Similarly, the thickness of the first connection end 211 and the second connection end 212 of the conductive element 210 is the same, so as to improve the impedance uniformity of the conductive element 210. The design can also improve the position of the impedance pit of the conduction component 210, improve the insertion loss of the conduction component 210, and facilitate the transmission of high-speed signals.
In yet another example, the thickness of the conductive component 210 is uniform along the plugging direction of the conductive component 210, so that impedance discontinuity can be reduced, that is, impedance continuity can be improved, and high-speed signal transmission is facilitated. Optionally, the width of the conductive component 210 is uniform, and the thickness of the conductive component 210 is uniform along the plugging direction of the conductive component 210. Such a design may simplify the manufacturing process and production costs of the conductive assembly 210. For example, a plurality of metal sheets having the same width are cut out from a metal plate. The first connection end 211 and the second connection end 212 are formed in a metal sheet by adopting a bending molding process, and the first connection end 211 is provided with an arc-shaped contact surface 211A.
In one possible embodiment, a side view of the pass-through assembly 210 is shown in fig. 5. The first connection end 211 of the conductive element 210 may form a cantilever or a suspension to increase the resilience of the conductive element 210. The cantilever will be described by way of example. In one example, the cantilever is formed by a bending molding process. The flat cable is inserted into the flat cable connector and applies pressure downward against the conductive member 210. As shown in fig. 5, the first connection end 211 may further have a socket portion 211B. The mating portion 211B may mate with the base structure 220. The first connection end 211 may also have one or more cantilever fulcrums, such as a first cantilever fulcrum 211C and a second cantilever fulcrum 211D. When the arcuate contact surface 211A is subjected to a downward positive pressure applied by the wire, the cantilever fulcrum may move the arcuate contact surface 211A distance in the positive pressure direction. For example, after the flat cable is inserted into the flat cable connector, the flat cable contacts the arc-shaped contact surface 211A, and a downward positive pressure is applied to the arc-shaped contact surface 211A, and under the action of the positive pressure, the first cantilever fulcrum 211C and the second cantilever fulcrum 211D can move the arc-shaped contact surface 211A downward a distance until the arc-shaped contact surface 211A reaches a force balance.
The first cantilever fulcrum 211C and the second cantilever fulcrum 211D of the first connecting end 211 can make the first connecting end 211 have better rebound resilience. The maximum distance that the first and second cantilever fulcrums 211C and 211D can move the arcuate contact surface 211A downward may be referred to as a rebound stroke or a positive displacement stroke. After the flat cables with different thicknesses are embedded in the flat cable connector, the arc-shaped contact surface 211A moves downwards by different distances under the action of positive pressure of the flat cables. The first connection end 211 may be implemented as a cantilever or a suspension, so that the conductive assembly 210 has a larger rebound stroke, i.e. a larger positive pressure stroke of the flat cable, so that the flat cable connector has a low thickness tolerance requirement on the FFC/FPC flat cable, and a high tolerance. Therefore, the flat cable connector provided by the application has higher application flexibility and can be matched with flat cables with different thicknesses.
Generally, the width and thickness of the different conductive components 210 in the flat cable connector are the same, which is beneficial to the manufacture of the conductive components 210, and the assembly of the flat cable connector is convenient, so that the production cost can be reduced. Referring to fig. 3 again, in the assembly process of the flat cable connector provided in the embodiment of the present application, the plurality of conductive assemblies 210 may be plugged into the base structure 220 through one insertion operation. Or may be separated from the base structure 220 by a single removal operation. For example, the entire row of the conductive assemblies 210 can be assembled by a bending molding process, so that the convenience of assembly can be improved, and the production cost can be reduced.
In one possible design, the base structure 220 may be formed by an injection molding process, typically with structure that mates with other components in the cable connector. As shown in fig. 6, the base structure 220 may include a plurality of first through holes 221 and first grooves 222 corresponding to each of the first through holes. For each conductive component 210, the first connection end 211 of the conductive component 210 may pass through the first through hole 221, and the plugging portion 211B of the first connection end 211 may be inserted into the first groove 222 of the base structure 220, so as to plug the conductive component 210 into the base structure 220. The first recess 222 on the base structure 220 may have a limiting effect on the conductive assembly 210. When the arc-shaped contact surface 211A of the conducting component 210 receives the positive pressure of the flat cable, the plug-in portion 211B can be continuously inserted into the first groove 222, and when the arc-shaped contact surface 211A receives the positive pressure of the flat cable, the arc-shaped contact surface 211A is reduced or zero, the arc-shaped contact surface moves upwards, and the plug-in portion 211B cannot be separated from the first groove 222. Generally, the first grooves 222 of the base structure 220 may be disposed side by side, so that the conductive assemblies 210 may be plugged onto the base structure 220 side by side.
The second connection end 212 of each conductive member 210 may not pass through the first via 221. The second connection end 212 of the conductive component 210 may abut against one end (an end far away from the flat cable) of the base structure 220 to perform a limiting function. The second connection end 212 of the conductive component 210 may be directly connected to the circuit board, or fixedly connected by soldering, or electrically connected.
To promote the stability of the connection of the cover 230 to the base structure 220, the cover 230 is prevented from being separated from the base structure 220. The cover 230 may be hinged to the base structure 220 in the flat cable connector provided herein. In one possible design, as shown in FIG. 2, the flat cable connector may further include a connection assembly 240 for articulating the cover 230 with the base structure 220.
With continued reference to fig. 6, the connecting assembly 240 has one end secured to the base structure 220 and the other end hinged to the cover 230. For example, the connection assembly 240 may include a first limiting portion 241, and the first limiting portion 241 may be hinged to the cover 230 through a second through hole 223 on the base structure 220. In some examples, the first stopper 241 may have a second groove 242 for hinging with the cover 230. The second groove 242 extends away from the conducting component 210, so that the second groove 242 can be hinged to the rotating shaft 231 (also referred to as a rotating shaft) on the cover 230. The third through hole 232 on the cover 230 may accommodate the first limiting portion 241, and the second groove 242 of the first limiting portion 241 may be hinged with the rotation shaft 231 on the cover 230. Such a design may allow the cover 230 to be rotatably disposed on the base structure 220. In this embodiment, the first groove 222 of the first limiting portion 241 is locked with the rotation shaft 231, and plays a reverse limiting role after the flat cable is inserted into the flat cable connector, and prevents the cover 230 from falling off. Optionally, the cover 230 may further have a second limiting portion 233 thereon, where the second limiting portion 233 cooperates with the first limiting portion 241 to limit a rotation angle of the cover 230 relative to the base structure 220. The body portion 234 of the cover 230 may be used to cover the flat cable.
To enhance the stability of the connection of the flat cable connector to the circuit board, the flat cable connector may further include at least one positioning assembly 250, as shown in fig. 2. For convenience in describing the structure and function of the positioning assembly 250 in the present application, fig. 7 (a) shows a schematic structural diagram of the positioning assembly 250, fig. 7 (b) is a side view of the positioning assembly 250, and fig. 7 (c) is a top view of the positioning assembly 250. The positioning assembly 250 may have a positioning portion 251 and a welding portion 252. The positioning portion 251 may be inserted into the base structure 220, and the soldering portion 252 may be soldered to the circuit board. The degree of stability of the connection of the base structure 220 to the circuit board can be enhanced by soldering the solder portion 252 of the positioning assembly 250 to the circuit board.
In one possible design, referring to fig. 7, the soldering portion 252 has a soldering surface 252a, and the soldering surface 252a may contact the circuit board in order to further enhance the stability of the connection between the base structure 220 and the circuit board. The weld 252 of the positioning assembly 250 may also have a circular arc tin recess 252b. The arc solder receiving groove 252b is provided on a side surface (a surface connected to the soldering surface) of the soldering portion 252. When the welding part 252 is welded with the circuit board, the welding surface 252a is contacted with the circuit board, the arc tin-eating groove 252b can contain tin paste, the welding area of the welding part 252 after the board is attached is increased, and the welding firmness between the flat cable connector and the circuit board is improved.
In one possible design, as shown in FIG. 2, the flat cable connector may include a plurality of positioning assemblies 250 disposed at each end of the base structure 220. It will be appreciated that the more positioning assemblies 250, the more stable the connection of the base structure 220 to the circuit board, and the less likely it will be to separate.
An existing flat cable connector is provided with a separate grounding terminal for communicating a grounding wire of a flat cable with a grounding wire of a circuit board. Therefore, the number of components in the existing flat cable connector is large, so that the assembly process of the flat cable connector is complex, and the thickness of the flat cable connector is also large.
To reduce the number of components of the flat cable connector, the flat cable connector has a thinner thickness. In the flat cable connector provided in the present application, the positioning assembly 250 may have the foregoing positioning function, and may also have a grounding function. In one example, as shown in fig. 7, the positioning assembly 250 may further include a contact 253, and the contact 253 may be used to connect with a ground line of the flat cable. For example, after the flat cable is inserted into the flat cable connector, the contact portion 253 of the positioning assembly 250 contacts the ground wire or ground area of the flat cable. Fig. 8 shows the contact between the contact portion 253 of the positioning assembly 250 and the flat cable after the flat cable is inserted into the base structure 220. It should be noted that, in the present application, the ground line on the circuit board or the ground line on the flat cable may refer to the ground line, or may refer to the ground area having the ground line function. Alternatively, the contact portion 253 of the positioning assembly 250 may have a circular arc-shaped spring arm structure.
In this embodiment, the positioning assembly 250 not only has the capability of fixing the flat cable connector to the circuit board, but also has the capability of connecting the ground wire on the flat cable to the ground wire on the circuit board, as compared with the conventional flat cable connector which requires an additional ground terminal. By the design, the number of components in the flat cable connector can be reduced, the production cost is reduced, and the thickness of the flat cable connector can be reduced.
After the flat cable is inserted into the flat cable connector, the cover 230 can cover the flat cable, so that the flat cable can be closely contacted with the conductive component 210, and the conductive stability between the flat cable and the conductive component 210 is improved. If the flat cable is acted by a force in a direction opposite to the direction of the cover pressure, that is, the flat cable is tilted upward, the cover 230 may be loosened or sprung. As shown in fig. 7, the positioning assembly 250 may also include a stop 254. The blocking portion 254 may be a cantilever or a cantilever having a bending angle. After the locating portion 251 of the locating assembly 250 is inserted into the base structure 220, the blocking portion 254 may be disposed outside the base structure 220. Alternatively, the blocking portion 254 may be an L-shaped cantilever or a cantilever. When the flat cable is lifted by force, the blocking surface 254a of the blocking portion 254 can contact the flat cable, and force for preventing the flat cable from lifting up is applied to the flat cable, so that the risk of the cover 230 bouncing off or loosening is reduced. Optionally, after the positioning assembly 250 is inserted into the base structure 220, the cover 230 may apply pressure to the blocking portion 254, where the contact surface of the cover 230 and the blocking portion 254 is opposite to the blocking surface 254 a.
In one possible embodiment, (a) in fig. 9 illustrates the direction of insertion of the conductive assembly 210 into the base structure and the direction of insertion of the positioning assembly 250 into the base structure 220. Fig. 9 (b) shows a top view of one end of the flat cable connector after the conductive component 210 and the positioning component 250 are plugged into the base structure 220, respectively. The positioning component 250 in the flat cable connector is plugged into the base structure 220 in a direction opposite to the plugging direction of the conductive component 210 into the base structure 220. Alternatively, the positioning assembly 250 and the conductive assembly 210 of the flat cable connector may be disposed at opposite ends of the base structure 220. By adopting the design, the base structure 220 can be effectively prevented from being separated from the conducting component 210, the breaking force of the flat cable connector on the circuit board can be reduced, and the breaking force of the circuit board welded by the flat cable connector can be improved.
In some examples, the positioning assembly 250 may include a body portion 255, which may include a first plate and a second plate connected. The first plate may have a first end connected to the welding part 252 and a second end connected to the positioning part 251. The second plate may have a first end connected to the contactable portion 253 and a second end connected to the blocking portion 254. Alternatively, the positioning assembly 250 may be a unitary assembly. The body portion 255 may connect one or more of the positioning portion 251, the welding portion 252, the contact portion 253, and the blocking portion 254 of the positioning assembly 250 together.
With continued reference to fig. 7, to prevent displacement (wobble) in the plugging direction of the conductive assembly 210 or in the plugging direction of the positioning assembly 250 after the cover 230 is hinged to the base structure 220 may occur. In one possible design, a limit groove for locking the cover 230 may be formed between the positioning assembly 250 and the base structure 220. In one example, the locating portion 251 of the locating assembly 250 is formed with a stepped surface 256. Referring to fig. 10, the cover 230 has rotating protruding shafts 235 at two ends, and the base structure 220 is formed with a limiting surface 220A. The positioning portion 251 of the positioning assembly 250 is formed with a stepped surface 256. The step surface 256 of the positioning portion 251 and the limit surface 220A of the base structure 220 may form a limit groove 260. The rotating protruding shafts 235 at both ends of the cover 230 are rotatably disposed in the limiting groove 260. Realizing the function that the positioning assembly 250 can limit the structure of the cover 230 can prevent the displacement (shaking) between the cover 230 and the base structure 220 along the plugging direction of the conducting assembly 210 or the plugging direction of the positioning assembly 250, also reducing the risk of falling off the base structure 220 in the rotating process of the cover 230, and improving the use reliability of the flat cable connector. Alternatively, the rotating protruding shaft 235 may be a cylindrical protruding shaft. By the design, the cover body 230 can be opened or closed smoothly without clamping stagnation when rotating.
In one possible design, the base structure 220 may have a first opening where it plugs into the positioning portion 251 of the positioning assembly 250. The openings of the limit grooves 260 formed by the step surface 256 and the limit surface 220A are all located in the first opening of the base structure 220, so that the plugging degree of the positioning assembly 250 and the base structure 220 can be observed through the first switch in the process of assembling the flat cable connector, or whether the limit grooves 260 are matched with the rotating protruding shaft 235 of the cover body 230 can be observed.
The embodiment of the application also provides electronic equipment using the connector in the embodiment, and the electronic equipment can be display equipment, communication equipment, a server, a super computer or equipment such as a router and a switch in the prior art. The electronic device may include a first circuit board and a flat cable connector in any of the foregoing embodiments. The flat cable connector provided by any one of the embodiments has a strong high-speed signal transmission capability and a smaller volume or thickness, so that the electronic device can support the high-speed signal transmission capability and has a thinner thickness.
The flat cable connector can be arranged on the first circuit board, and can realize electric connection between the first circuit board and the flat cable. When the flat cable is embedded in the flat cable connector, signals can be transmitted through the flat cable connector and the first circuit board. For example, at least one of a video data stream, an audio data stream, a control signal, or power supply. The width of the arc contact surface 211A is within a certain range, and the impedance consistency of the conductive component 210 is better because the arc contact surface 211A of the conductive component 210 in the flat cable connector is connected with the flat cable. The flat cable connector can support the transmission of high-speed signals between the first circuit board and the flat cable. Optionally, the electronic device may further comprise a flat cable.
In the above technical solution, the specific types of the first circuit board and the flat cable are not limited, and the first circuit board may be a single board of an electrical component such as a chip. The flat cable can be a flat cable on an electrical component such as a chip.
In some examples, the electronic device may include a display system. For example, the electronic device may be of the type of a television, smart screen, tablet, desktop, mobile, etc. The first circuit board may be a single board of the AP, and the flat cable may specifically be a flat cable on a TCON chip.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes or substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (17)

1. A flat cable connector, comprising: the base structure, a plurality of conduction components and a cover body;
the plurality of conducting components are inserted on the base structure side by side, each conducting component is provided with a first connecting end and a second connecting end, the first connecting ends of the plurality of conducting components are used for connecting a flat cable, each first connecting end is provided with an arc-shaped contact surface for connecting the flat cable, and the second connecting ends are used for connecting a circuit board;
the cover body is arranged on the plurality of conducting components and is used for covering and pressing the flat cable when the flat cable is placed on the arc-shaped contact surface of the first connecting end.
2. The flat cable connector of claim 1, wherein the width of the arcuate contact surface along the mating direction of the conductive assembly is determined based on a predetermined impedance and an electrical characteristic of the material.
3. The electrical flat cable connector of claim 1 or 2, wherein the arcuate contact surface has a width of no more than 0.2 millimeters in the mating direction of the conductive assembly.
4. A flat cable connector according to any one of claims 1-3, wherein the width of the arcuate contact surface in the plugging direction of the conductive member is not less than 0.15 mm.
5. The flat cable connector of any one of claims 1-4, wherein the first connection end and the second connection end have the same width along the plugging direction of the conductive member.
6. The flat cable connector of any one of claims 1-5, wherein the first connection end and the second connection end have the same thickness.
7. The flat cable connector of any one of claims 1-6, further comprising a connection assembly; one end of the connecting component is fixed on the base structure, and the other end of the connecting component is hinged with the cover body.
8. The flat cable connector of claim 7, wherein the connection assembly comprises a first stop portion; the first limiting part is provided with a groove used for being hinged with the cover body, and the extending direction of the groove is far away from the conducting assembly so as to limit the cover body to be separated from the base structure.
9. The flat cable connector of any one of claims 1-8, further comprising at least one positioning assembly; the positioning assembly is provided with a positioning part and a welding part; the positioning part is inserted into the base structure; the welding part is used for welding with the circuit board.
10. The flat cable connector of claim 9, wherein the orientation assembly mates in a direction opposite to the mating direction of the pass-through assembly.
11. The flat cable connector of claim 9 or 10, wherein the solder portion is connected to a ground line of the circuit board;
the positioning assembly further comprises a contact portion, wherein the contact portion is used for being connected with a grounding wire of the flat cable.
12. The flat cable connector of any one of claims 9-11, wherein the positioning assembly further comprises a blocking portion; the blocking surface is used for preventing the flat cable from being tilted upwards.
13. The flat cable connector of claim 9, wherein the cover has a rotating protruding shaft at both ends, and the base structure is formed with a limiting surface; the positioning part is provided with a step surface;
the step surface and the limit surface form a limit groove, and the rotary protruding shaft is rotatably arranged in the limit groove.
14. An electronic device, comprising: a circuit board and a flat cable connector according to any one of claims 1 to 12;
the flat cable connector is used for realizing the electric connection between the circuit board and the flat cable.
15. The electronic device of claim 14, further comprising: the flat cable.
16. The electronic device of claim 14, wherein the electronic device comprises a display system, the circuit board is a circuit board of an application processor AP in the display system, and the flat cable is a flat cable of a timing controller TCON in the display system.
17. The electronic device of any of claims 14-16, wherein the flat cable connector is configured to transmit at least one of a video data stream, an audio data stream, a control signal, or power supply.
CN202111261385.3A 2021-10-28 2021-10-28 Flat cable connector and electronic equipment Pending CN116053829A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202111261385.3A CN116053829A (en) 2021-10-28 2021-10-28 Flat cable connector and electronic equipment
PCT/CN2022/127671 WO2023072142A1 (en) 2021-10-28 2022-10-26 Flat cable connector and electronic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111261385.3A CN116053829A (en) 2021-10-28 2021-10-28 Flat cable connector and electronic equipment

Publications (1)

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ID=86124130

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Application Number Title Priority Date Filing Date
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WO (1) WO2023072142A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1207588B1 (en) * 2000-11-20 2011-05-04 Tyco Electronics AMP GmbH Electrical connector for flat cable or flexible printed circuit
CN201018031Y (en) * 2007-03-23 2008-02-06 达昌电子科技(苏州)有限公司 Electrical connector
CN201134537Y (en) * 2007-09-07 2008-10-15 达昌电子科技(苏州)有限公司 Connector of flexible flat cable
CN210517062U (en) * 2019-09-29 2020-05-12 瀚荃电子科技(苏州)有限公司 FPC winding displacement anti-drop connector
CN211700728U (en) * 2020-05-21 2020-10-16 浙江创佳电子有限公司 Electronic connector
CN212209846U (en) * 2020-06-01 2020-12-22 东莞市钿威电子科技有限公司 Self-locking connector and connector assembly
CN112217011A (en) * 2020-09-30 2021-01-12 联宝(合肥)电子科技有限公司 Bus connector and electronic equipment
CN217239843U (en) * 2022-04-21 2022-08-19 东莞市昶通通讯科技有限公司 Electric connector

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