WO2021120580A1 - 板对板连接器及其形成方法 - Google Patents

板对板连接器及其形成方法 Download PDF

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Publication number
WO2021120580A1
WO2021120580A1 PCT/CN2020/099096 CN2020099096W WO2021120580A1 WO 2021120580 A1 WO2021120580 A1 WO 2021120580A1 CN 2020099096 W CN2020099096 W CN 2020099096W WO 2021120580 A1 WO2021120580 A1 WO 2021120580A1
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WO
WIPO (PCT)
Prior art keywords
terminals
male
female
plug
row
Prior art date
Application number
PCT/CN2020/099096
Other languages
English (en)
French (fr)
Inventor
王槐庆
陈安骏
张贞志
Original Assignee
中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US17/626,492 priority Critical patent/US20220285873A1/en
Priority to EP20902953.7A priority patent/EP3965232A4/en
Priority to KR1020217040129A priority patent/KR102662082B1/ko
Publication of WO2021120580A1 publication Critical patent/WO2021120580A1/zh

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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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14639—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles for obtaining an insulating effect, e.g. for electrical components
    • 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
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • 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
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716—Coupling device provided on the PCB
    • 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
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/73—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures connecting to other rigid printed 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve

Definitions

  • the present disclosure relates to but not limited to the field of electronic technology, and in particular to a board-to-board connector and a method of forming the same.
  • B-B connectors ie, board-to-board connectors
  • the main function of the B-B connector is to connect components to components, PCB (ie printed circuit board) and PCB connection, hard board and soft board transfer, etc., expand the function of the main PCB and increase the layout area.
  • the B-B connector can also realize complex spatial environments, such as different heights and different orientations.
  • Figs. 1 and 2 show a two-row structure as shown in Figs. 1 and 2, wherein Fig. 1 shows a female end and Fig. 2 shows a male end. If you want to increase the number of connected PIN pins, you can only increase the length of the left and right connectors. This leads to an increasingly larger horizontal space occupied by the layout on the PCB, which directly affects the utilization rate of the PCB. In addition, the length of the connector cannot be increased indefinitely. Once the number of PIN pins increases too much, it will be difficult to control the flatness of the slender connector due to the limitation of its own structure and technology. Therefore, it directly affects the welding quality of the PIN pin of the B-B connector, causing poor contact of the PIN pin.
  • an embodiment of the present disclosure proposes a board-to-board connector, which is suitable for electronic products that require connectors and can occupy a small space. Under the conditions, the actual demand for the connection of a large number of plug-in terminals can be realized. In addition, an embodiment of the present disclosure also provides a method for forming a board-to-board connector.
  • a method for forming a board-to-board connector including: forming a male end having at least three rows of male plug-in terminals; and forming a male end having at least three rows
  • the female end of the female plug-in terminal, the number of rows of female plug-in terminals is equal to the number of male plug-in terminal rows, wherein the area on the male end near the middle row of male plug-in terminals is formed with a male end window, and the male end window is injection molded from the male end
  • the clamping part in the mold for clamping the middle row of male plug-in terminals is formed in the injection molding process; and wherein, the area on the female end near the middle row of female plug-in terminals is formed with a female end window, and the female end window is formed by the female end window.
  • the clamping part in the end injection mold for clamping the middle row female connector terminal is formed during the injection molding process.
  • the at least three rows of male connector terminals include: a first row of male connector terminals and a second row of male connector terminals formed on opposite sides of the male end; At least one row of male plug-in terminals between one row of male plug-in terminals and the second row of male plug-in terminals, wherein the middle row of male plug-in terminals is at least one row of male plug-in terminals.
  • the at least three rows of female plug-in terminals include: a first row of female plug-in terminals and a second row of female plug-in terminals formed on opposite sides of the female end; At least one row of female plug-in terminals between a row of female plug-in terminals and a second row of female plug-in terminals, wherein the middle row of female plug-in terminals is at least one row of female plug-in terminals.
  • the two ends of the middle row of male plug-in terminals located on both sides of the male end window are respectively injection molded into the body of the male end.
  • an embodiment of the present disclosure also provides a board-to-board connector, including: a male end with at least three rows of male plug-in terminals; and a female end with at least three rows of female plug-in terminals.
  • the number is equal to the number of male plug-in terminal rows.
  • the area on the male end near the middle row of male plug-in terminals is provided with a male end window, and the male end window is used to clamp the middle row of male plug-in terminals in the male end injection mold.
  • the clamping part is formed during the injection molding process; and wherein, the area on the female end near the middle row female connector terminal is formed with a female end window, and the female end window is used to clamp the middle row female in the female end injection mold
  • the clamping part of the plug-in terminal is formed during the injection molding process.
  • the at least three rows of male plug-in terminals include: a first row of male plug-in terminals and a second row of male plug-in terminals arranged on opposite sides of the male end; and At least one row of male plug-in terminals between one row of male plug-in terminals and the second row of male plug-in terminals, wherein the middle row of male plug-in terminals is at least one row of male plug-in terminals.
  • the at least three rows of female plug-in terminals include: a first row of female plug-in terminals and a second row of female plug-in terminals arranged on opposite sides of the female end; and At least one row of female plug-in terminals between a row of female plug-in terminals and a second row of female plug-in terminals, wherein the middle row of female plug-in terminals is at least one row of female plug-in terminals.
  • the two ends of the middle row of male plug-in terminals located on both sides of the male end window are respectively injection-molded with the body of the male end as a whole.
  • the middle row of male plug-in terminals has a contact arm located at the male end window, and two ends of the contact arm located on both sides of the male end window are respectively integrally molded with the body of the male end.
  • the middle row of female plug-in terminals have contact arms exposed outside the female end window.
  • FIG. 1 is a schematic diagram of the structure of a female end of a board-to-board connector with two rows of female plug-in terminals in the prior art
  • FIG. 2 is a schematic diagram of the structure of the male end of the board-to-board connector with two rows of male plug-in terminals in the prior art
  • Figure 3 is a schematic diagram of a board-to-board connector used when increasing the number of plug-in terminals
  • Fig. 4 is a schematic structural diagram of a male end of a board-to-board connector according to an embodiment of the present disclosure
  • Fig. 5 is a schematic diagram of the structure of the female end of the board-to-board connector according to an embodiment of the present disclosure
  • Figure 6 is a perspective view of a male end of the board-to-board connector according to an embodiment of the present disclosure
  • Figure 7 is a perspective view from another perspective of the male end of the board-to-board connector according to an embodiment of the present disclosure
  • FIG. 8 is a perspective view of a female end of a board-to-board connector according to an embodiment of the present disclosure
  • Figure 9 is a perspective view from another perspective of the female end of the board-to-board connector according to an embodiment of the present disclosure.
  • Figure 10 is a perspective view of the male and female ends of the board-to-board connector after assembly according to an embodiment of the present disclosure
  • FIG. 11 is a perspective view of the male and female ends of the board-to-board connector according to the embodiment of the present disclosure when they are to be assembled;
  • Fig. 13 is a partial enlarged view of the male and female ends of the board-to-board connector according to an embodiment of the present disclosure when they are to be assembled.
  • a solution of connecting multiple B-B connectors as shown in FIG. 3 may be adopted.
  • the welding and assembly requirements between the B-B connectors will cause a lot of space.
  • the difficulty of layout and routing is increased, and the space utilization rate of the PCB is reduced, which is contrary to the demand for product miniaturization.
  • An embodiment of the present disclosure provides a board-to-board connector, including: a male end having at least three rows of male plug-in terminals; a female end having at least three rows of female plug-in terminals, the number of rows of female plug-in terminals and the number of male plug-in terminal rows The number is equal, where the area on the male end near the middle row of male plug-in terminals is provided with a male end window, and the male end window is injected by the clamping part in the male end injection mold for clamping the middle row of male plug-in terminals.
  • the area on the female end near the middle row of female plug-in terminals is formed with a female end window, and the female end window is formed by the clamping part of the female end injection mold for clamping the middle row of female plug-in terminals It is formed during the injection molding process.
  • the board-to-board connector of the present disclosure may have three, four or more rows of plug-in terminals.
  • the structure of the board-to-board connector of the present disclosure will be described in detail with reference to specific embodiments.
  • this embodiment provides a board-to-board connector with three rows of plug-in terminals, including: a male end with three rows of male plug-in terminals; a female end with three rows of female plug-in terminals, wherein ,
  • the area on the male end near the middle row of male plug-in terminals is provided with a male end window, and the male end window is formed by the clamping part of the male end injection mold for clamping the middle row of male plug-in terminals during the injection molding process;
  • a female end window is formed on the female end near the middle row female connector terminal, and the female end window is formed by the clamping part of the female end injection mold for clamping the middle row female connector terminal during the injection molding process.
  • the board-to-board connector of this embodiment includes a male end 1 and a female end 2.
  • the male end 1 adopts the structure shown in FIG. 4, FIG. 6, and FIG. 7, and the female end 2 adopts the structure shown in FIG. 5, FIG. 8, and FIG. 9.
  • the male end 1 of this embodiment has a body and a male plug terminal.
  • Three rows of male plug-in terminals parallel to each other are provided on the body.
  • the three rows of male plug-in terminals include: a first row of male plug-in terminals 10 and a second row of male plug-in terminals 12 arranged on opposite sides of the body; and A middle row of male connector terminals 11 located between the first row of male connector terminals and the second row of male connector terminals.
  • Each row of male plug-in terminals includes multiple male plug-in terminals in parallel.
  • the area of the male end 1 body near the middle row of male plug-in terminals 11 is provided with a male end window 13, and the male end window 13 is used for clamping the middle row of male plug-in terminals in the male end injection mold during the injection molding process. In the formation.
  • the middle row of male plug-in terminals includes a plurality of male plug-in terminals arranged side by side
  • the male end window 13 located near the middle row of male plug-in terminals also includes a plurality of small windows arranged at intervals, that is, there is one small window between adjacent small windows.
  • Male plug-in terminal Since the middle row of male plug-in terminals includes a plurality of male plug-in terminals arranged side by side, the male end window 13 located near the middle row of male plug-in terminals also includes a plurality of small windows arranged at intervals, that is, there is one small window between adjacent small windows. Male plug-in terminal.
  • the processing technology of the middle row of male plug-in terminals and the strength and reliability of the soldering between the male plug-in terminals and the corresponding circuit board pads can be ensured.
  • each male connector terminal in the three rows of male connector terminals in this embodiment includes a contact arm 101 and a contact arm 101 for electrical connection with a circuit board (not shown in the figure) adapted to the male end.
  • a conducting arm 100 perpendicular to the contact arm 101 and used for electrical connection with the female terminal 2.
  • the contact arm 101 is located between the adjacent small windows in the male end window, and the two ends of the contact arm 101 on both sides of the small window are respectively injection molded into the body.
  • the female end 2 of this embodiment has a body and a female card terminal.
  • Three rows of female plug-in terminals parallel to each other are provided on the body of the female end 2.
  • the three-row female plug-in terminals include: a first row of female plug-in terminals 20 and a second row of female plug-in terminals 22 arranged on opposite sides of the body; and A middle row of female connector terminals 21 on the body and located between the first row of female connector terminals 20 and the second row of female connector terminals 22.
  • a female end window 23 is provided in the area of the body of the female end 2 near the middle row female plug terminal 21, and the female end window 23 is formed by a clamping member in the female end injection mold for clamping the middle row female plug terminal 21 It is formed during the injection molding process.
  • the middle row of female connector terminals 21 include a plurality of female connector terminals arranged side by side, the female end windows 23 located near the middle row of female connector terminals are also separated by the plurality of female connector terminals 21 into a plurality of small windows.
  • the processing technology of the middle row of female plug-in terminals and the strength and reliability of the welding between the female plug-in terminals and the corresponding circuit board pads can be ensured.
  • each of the three rows of female plug-in terminals in this embodiment includes a contact arm 210 for electrical connection with a circuit board (not shown in the figure) adapted to the female end, and a contact arm 210.
  • the conductive arm 210 is connected by the connecting arm 211 and is used for the conductive arm 212 electrically connected to the conductive arm 100 of the male terminal 1.
  • the contact arm 210 of each female card terminal 21 in the middle row is located at the female end window 23, that is, the contact arm 210 of each female card terminal 21 is exposed to the female end window 23 and passes through a plurality of contact arms. 210 isolates the female end window 23 into a plurality of small windows, and a part of the connecting arm 211 connected with the contact arm 210 is injection molded into one body.
  • the contact arms of the female plug-in terminal are arranged in parallel with the contact arms of the corresponding male plug-in terminal.
  • using this structure can ensure the strength of the female end body after the male end window is opened, adapt to the reliability of the plug-in terminal when the female end and the male end are inserted and removed multiple times, and effectively prevent the female end window from becoming the most stress concentrated Weak parts.
  • this embodiment It also includes an anti-loosening structure.
  • the anti-loosening structure includes: an outer boss 100a arranged on the bottom end of the conducting arm 100 of the male plug-in terminal; and an inner groove 211a arranged on the connecting arm 211 of the female plug-in terminal. When the male end is inserted into the female end, the outer boss 100a can just be clamped in the inner groove 211a to prevent loosening.
  • the conducting arm 212 of the female plug-in terminal of this embodiment has a barbed portion with a certain inclination angle relative to the extending direction of the contact arm 212, which can also effectively prevent the male plug-in terminal and the female plug-in terminal from being loosened after being inserted.
  • the barbed portion of the female plug-in terminal on the female end 2 may be formed to communicate with the corresponding male plug-in terminal on the male end 1. Conductive contacts where the arms abut to connect the circuit.
  • the male plug-in terminal and the female plug-in terminal of this embodiment can adopt other structures known in the art in addition to the above-mentioned structure, as long as they overlap and form a reliable circuit connection.
  • the number of connector plug-in terminals needs to be increased, there is no need to increase the length of the connector one-sidedly. Instead, the number of rows of plug-in terminals can be increased by expanding the width of the connector to make the connector
  • the flatness of the SMT (Surface Mounted Technology, that is, surface mount technology) patch has been strengthened.
  • the bite force between the male and female ends is strengthened, and the difference between the male and female ends of the board-to-board connector is improved.
  • the contact reliability between the male and female ends especially through the partial opening of the male and female ends, improves the production and processing technology, and facilitates the mold processing and welding inspection of the middle row of plug-in terminals.
  • This embodiment provides a board-to-board connector (not shown in the figure) with four rows of plug-in terminals.
  • the difference from Embodiment 1 is that four rows of male plug-in terminals are provided on the male end.
  • the board-to-board connector according to this embodiment is also provided with a middle row of male plug-in terminals including two rows of male plug-in terminals in the middle.
  • Each row of male plug-in terminals in the middle row of male plug-in terminals is provided with a male end window, the contact arms of the row of male plug-in terminals are exposed on the window, and both ends of the two sides of the window are injection molded into the body.
  • female plug-in terminals are provided on the female end, and a middle row of female plug-in terminals including two rows of female plug-in terminals are arranged in the middle of the female end body, at each row of female plug-in terminals in the middle row of female plug-in terminals A female end window is provided, and the contact arm of the row of female plug-in terminals is exposed in the window.
  • the present disclosure also provides a method for forming a board-to-board connector, including:
  • the area on the male end near the middle row of male plug-in terminals is formed with a male end window, and the male end window is formed by the clamping part of the male end injection mold for clamping the middle row of male plug-in terminals during the injection molding process.
  • the area on the female end near the middle row female plug-in terminal is formed with a female end window, and the female end window is formed by the clamping part in the female end injection mold for clamping the middle row female plug-in terminal during the injection molding process.
  • the at least three rows of male plug-in terminals include:
  • the first row of male connector terminals and the second row of male connector terminals formed on opposite sides of the male end;
  • At least one row of male plug-in terminals formed on the male end and located between the first row of male plug-in terminals and the second row of male plug-in terminals,
  • the middle row of male plug-in terminals is at least one row of male plug-in terminals.
  • the at least three rows of female plug-in terminals include:
  • the first row of female plug-in terminals and the second row of female plug-in terminals formed on opposite sides of the female end;
  • At least one row of female plug-in terminals formed on the female end and located between the first row of female plug-in terminals and the second row of female plug-in terminals,
  • the middle row of female plug-in terminals is at least one row of female plug-in terminals.
  • the contact arms of the middle row of male plug-in terminals are located at the male end window, and the two ends of the contact arms located on both sides of the male end window are respectively injection molded into the body of the male end.
  • the contact of the middle row of female plug-in terminals is The arm is exposed from the female end window.
  • the embodiment of the present disclosure forms the male end and the female end by an injection molding method.
  • injection molding use the corresponding male end injection mold and female end injection mold.
  • the structure of the male end injection mold and the female end injection mold is basically the same as that of the corresponding injection mold in the prior art. The difference is that there is a row or more of one for clamping the plug-in terminal in the middle of the corresponding injection mold. Or multiple clamping parts, and the corresponding windows are automatically formed by the clamping parts during the injection molding process. In this way, while increasing the number of plug-in terminals and facilitating the inspection of plug-in terminal welding reliability through the window, it also facilitates mold processing and increases the application range of the connector.
  • the structure of the board-to-board connector formed according to this embodiment is as described in Embodiments 1 and 2, and will not be described in detail here.
  • the board-to-board connector according to the embodiment of the present disclosure has at least three rows of plug-in terminals. Therefore, by properly extending the width of the board-to-board connector, the number of plug-in terminals is increased, the bite force between the male and female ends is strengthened, and the contact reliability between the male and female ends is improved. Since the plug-in terminals are implemented on the same board-to-board connector, the distance between the rows can be minimized. Compared with the prior art, two two-row board-to-board connectors of the same specifications are used to increase the number of plug-in terminals. Compared with, the space utilization rate is greatly improved.
  • a transparent window is added to the plug-in terminals of the middle row, which ensures the welding strength of the plug-in terminals of the middle row, and can also perform welding reliability inspection and maintenance.
  • a transparent window is formed in the mold for clamping the plug-in terminal of the middle row in the mold, which is convenient for the plug-in terminal of the middle row.
  • the production and processing technology is improved to facilitate the mold processing of the middle row of plug-in terminals.

Abstract

一种板对板连接器以及该板对板连接器的形成方法。所述板对板连接器包括：具有至少三排公插件端子的公端（1）；以及具有至少三排母插件端子的母端（2），母插件端子的排数与公插件端子排数相等，其中，公端（1）上的位于中间排公插件端子（11）附近的区域设置有公端窗口（13），且公端窗口（13）由公端（1）注塑模具中的用于夹持中间排公插件端子（11）的夹持部件在注塑过程中形成；并且其中，母端（2）上的位于中间排母插件端子（21）附近的区域形成有母端窗口（23），且母端窗口（23）由母端（2）注塑模具中的用于夹持中间排母插件端子（21）的夹持部件在注塑过程中形成。

Description

板对板连接器及其形成方法 技术领域
本公开涉及但不限于电子技术领域，具体地说，涉及一种板对板连接器及其形成方法。
背景技术
B-B连接器(即板对板连接器)广泛应用于电子产品中，尤其是手机等移动终端电子产品中。B-B连接器的主要功能是部件与部件连接、PCB(即印刷电路板)与PCB连接、硬板与软板的转接等，扩充主PCB的功能和增加布局面积。同时，B-B连接器还可以实现复杂的空间环境，譬如高低不同、方位不同等。
随着电子产品功能和性能的不断增加与提升，在产品外形尺寸变小以及内部布局空间有限的情况下，器件的密集度也越来越高。因此，需要B-B连接器连接的PIN脚数也越来越多。B-B连接器外形尺寸做小和PIN脚数增多成为最大的矛盾。在这种情况下，迫切需要一种面积利用率高的解决方案。
现有B-B连接器通常会采用如图1、图2所示的上下两排的结构，其中，图1示出母端，图2示出公端。如要增加连接PIN脚数，只能通过增加连接器左右的长度尺寸。这导致出现PCB上布局的横向空间占用越来越大，直接影响到PCB的利用率。另外，连接器长度不能无限增加。一旦PIN脚数增加太多，由于本身结构工艺上局限，会导致细长的连接器平面度控制困难。因此，直接影响B-B连接器PIN脚焊接质量，从而引起PIN脚接触不良。
发明内容
为了克服上述现有技术存在的缺陷，一方面，本公开的一个实施 例提出一种板对板连接器，该板对板连接器适用于需要连接器的电子产品中，可在占比空间小的条件下，实现大数量插件端子连接的实际需求。此外，本公开的一个实施例还提供一种板对板连接器的形成方法。
为了实现本公开的上述目的，一方面，根据本公开的一个实施例提供一种板对板连接器形成的方法，包括：形成具有至少三排公插件端子的公端；以及形成具有至少三排母插件端子的母端，母插件端子的排数与公插件端子排数相等，其中，公端上的位于中间排公插件端子附近的区域形成有公端窗口，且公端窗口由公端注塑模具中的用于夹持中间排公插件端子的夹持部件在注塑过程中形成；并且其中，母端上的位于中间排母插件端子附近的区域形成有母端窗口，且母端窗口由母端注塑模具中的用于夹持中间排母插件端子的夹持部件在注塑过程中形成。
在一个示例性实施例中，所述至少三排公插件端子包括：形成于公端相背两侧面的第一排公插件端子和第二排公插件端子；以及形成于公端上且位于第一排公插件端子和第二排公插件端子之间的至少一排公插件端子，其中，所述中间排公插件端子为至少一排公插件端子。
在一个示例性实施例中，所述至少三排母插件端子包括：形成于母端相背两侧面的第一排母插件端子和第二排母插件端子；以及形成于母端上且位于第一排母插件端子和第二排母插件端子之间的至少一排母插件端子，其中，所述中间排母插件端子为至少一排母插件端子。
在一个示例性实施例中，所述中间排公插件端子的位于公端窗口两侧的两端分别注塑到公端的本体中。
另一方面，本公开的一个实施例还提供一种板对板连接器，包括：具有至少三排公插件端子的公端；以及具有至少三排母插件端子的母端，母插件端子的排数与公插件端子排数相等，其中，公端上的位于中间排公插件端子附近的区域设置有公端窗口，且公端窗口由公端注塑模具中的用于夹持中间排公插件端子的夹持部件在注塑过程中形成； 并且其中，母端上的位于中间排母插件端子附近的区域形成有母端窗口，且母端窗口由母端注塑模具中的用于夹持中间排母插件端子的夹持部件在注塑过程中形成。
在一个示例性实施例中，所述至少三排公插件端子包括：设置于公端相背两侧面的第一排公插件端子和第二排公插件端子；以及设置于公端上且位于第一排公插件端子和第二排公插件端子之间的至少一排公插件端子，其中，所述中间排公插件端子为至少一排公插件端子。
在一个示例性实施例中，所述至少三排母插件端子包括：设置于母端相背两侧面的第一排母插件端子和第二排母插件端子；以及设置于母端上且位于第一排母插件端子和第二排母插件端子之间的至少一排母插件端子，其中，所述中间排母插件端子为至少一排母插件端子。
在一个示例性实施例中,所述中间排公插件端子的位于公端窗口两侧的两端分别与公端的本体注塑为一体。
在一个示例性实施例中，所述中间排公插件端子具有位于公端窗口处的接触臂，且接触臂的位于公端窗口两侧的两端分别与公端的本体注塑为一体。
在一个示例性实施例中，所述中间排母插件端子具有外露于母端窗口的接触臂。
附图说明
图1为现有技术具有两排母插件端子的板对板连接器母端的结构示意图；
图2为现有技术具有两排公插件端子的板对板连接器公端的结构示意图；
图3为增加插件端子数时采用的板对板连接器的示意图；
图4为根据本公开的一个实施例的板对板连接器的公端的结构示意图；
图5为根据本公开的一个实施例的板对板连接器的母端的结构示 意图；
图6为根据本公开的实施例的板对板连接器公端的一个视角的透视图；
图7为根据本公开的实施例的板对板连接器公端的另一个视角的透视图；
图8为根据本公开的实施例的板对板连接器母端的一个视角的透视图；
图9为根据本公开的实施例的板对板连接器母端的另一个视角的透视图；
图10为根据本公开的实施例的板对板连接器公端、母端装配后的透视图；
图11为根据本公开的实施例的板对板连接器公端、母端待装配时的透视图；
图12为根据本公开的实施例的板对板连接器公端、母端待装配时的截面图；以及
图13为根据本公开的实施例的板对板连接器公端、母端待装配时局部放大图。
具体实施方式
以下结合附图对本公开实施例的优选实施例进行详细说明，应当理解，以下所说明的优选实施例仅用于说明和解释本公开实施例，并不用于限定本公开实施例。
为解决多PIN脚需求，在一个实施例中，可以采用将如图3所示的多个B-B连接器进行连接的方案。但B-B连接器之间本身的焊接、装配要求，会导致空间占用多。在空间有限的情况下加大了布局和走线的难度，使PCB的空间利用率降低，有悖于产品小型化的需求。
本公开的一个实施例提供一种板对板连接器，包括：具有至少三排公插件端子的公端；具有至少三排母插件端子的母端，母插件端子 的排数与公插件端子排数相等，其中，公端上的位于中间排公插件端子附近的区域设置有公端窗口，且公端窗口由公端注塑模具中的用于夹持中间排公插件端子的夹持部件在注塑过程中形成；并且其中，母端上的位于中间排母插件端子附近的区域形成有母端窗口，且母端窗口由母端注塑模具中的用于夹持中间排母插件端子的夹持部件在注塑过程中形成。
在一个示例性实施例中，本公开的板对板连接器可以具有三排、四排或更多排的插件端子。下面，结合具体实施例对本公开板对板连接器的结构进行详细描述。
实施例1
如图10-图12所示，本实施例提供一种具有三排插件端子的板对板连接器，包括：具有三排公插件端子的公端；具有三排母插件端子的母端，其中，公端上的位于中间排公插件端子附近的区域设置有公端窗口，且公端窗口由公端注塑模具中的用于夹持中间排公插件端子的夹持部件在注塑过程中形成；并且其中，母端上的位于中间排母插件端子附近的区域形成有母端窗口，且母端窗口由母端注塑模具中的用于夹持中间排母插件端子的夹持部件在注塑过程中形成。
具体的，本实施例板对板连接器包括公端1与母端2。在一个示例性实施例中，公端1采用如图4、图6、图7所示的结构，母端2采用如图5、图8、图9所示的结构。
如图4、图6、图7所示，本实施例公端1具有本体及公插件端子。在本体上设置有三排相互平行的公插件端子，三排公插件端子包括：设置于本体相背两侧面的第一排公插件端子10和第二排公插件端子12；以及设置于本体上且位于第一排公插件端子和第二排公插件端子之间的一排中间排公插件端子11。每排公插件端子均包括并列的多个公插件端子。
公端1本体的位于中间排公插件端子11附近的区域设置有公端窗 口13，且公端窗口13由公端注塑模具中的用于夹持中间排公插件端子的夹持部件在注塑过程中形成。
由于中间排公插件端子包括并列安置的多个公插件端子，因此，位于中间排公插件端子附近的公端窗口13也包括间隔设置的多个小窗口，即，相邻小窗口之间有一个公插件端子。
通过在公端的本体上设置贯穿本体厚度的公端窗口，可以确保中间排公插件端子的加工工艺以及公插件端子与对应电路板上焊盘之间焊接的强度和可靠性。
制作时，中间排的每个公插件端子的位于公端窗口两侧的两端都搭接到本体内，即与本体注塑为一体。具体的，如图12所示，本实施例三排公插件端子中的每个公插件端子都包括用于与公端适配的电路板(图中未示出)电连接的接触臂101和与接触臂101垂直且用于与母端2电连接的导通臂100。
对于中间排的公插件端子来说，其接触臂101位于公端窗口中的相邻小窗口之间，而接触臂101的位于小窗口两侧的两端分别与本体注塑为一体。采用这种结构，可以保证公端的本体在开设公端窗口后的强度，适应公端与母端多次插拔时的插件端子的可靠性，有效避免公端窗口处成为应力集中的最弱部位。
如图5、图8、图9所示，本实施例的母端2具有本体及母插件端子。在母端2的本体上设置有三排相互平行的母插件端子，三排母插件端子包括：设置于本体相背两侧面的第一排母插件端子20和第二排母插件端子22；以及设置于本体上且位于第一排母插件端子20和第二排母插件端子22之间的一排中间排母插件端子21。
在母端2的本体的位于中间排母插件端子21附近的区域设置有母端窗口23，且母端窗口23由母端注塑模具中的用于夹持中间排母插件端子21的夹持部件在注塑过程中形成。
由于中间排母插件端子21包括并列安置的多个母插件端子，因此，位于中间排母插件端子附近的母端窗口23也由多个母插件端子21隔 离成多个小窗口。
同样，通过在母端的本体上设置贯穿本体厚度的母端窗口，可以确保中间排母插件端子的加工工艺以及母插件端子与对应电路板上焊盘之间焊接的强度和可靠性。
如图12所示，本实施例三排母插件端子中的每个母插件端子都包括用于与母端适配的电路板(图中未示出)电连接的接触臂210、与接触臂210通过连接臂211连接且用于与公端1的导通臂100电连接的导通臂212。
制作时，中间排的每个母插件端子21的接触臂210都位于母端窗口23处，即，每个母插件端子21的接触臂210都露出于母端窗口23，并通过多个接触臂210将母端窗口23隔离成多个小窗口，而与接触臂210连接的一部分连接臂211与本体注塑为一体。在一个示例性实施例中，母插件端子的接触臂与相适配的公插件端子的接触臂平行设置。同样，采用这种结构，可以保证母端的本体在开设公端窗口后的强度，适应母端与公端多次插拔时的插件端子的可靠性，有效避免母端窗口处成为应力集中的最弱部位。
为了在公端1与母端2插接后，确保相对应的公插件端子与母插件端子之间能够可靠电连接、有效防止连接后松脱，如图12、图13所示，本实施例在还包括防松脱结构。该防松脱结构包括：设置在公插件端子的导通臂100底端的外凸台100a；以及设置在母插件端子的连接臂211上的内凹槽211a。当公端插入到母端内时，外凸台100a正好可卡置在内凹槽211a内，防止松脱。
另外，本实施例母插件端子的导通臂212具有相对接触臂212延伸方向具有一定倾斜角度的倒钩形部，也可有效防止公插件端子与母插件端子插置后松脱。
在一个示例性实施例中，当公端1插置于母端2上时，母端2上的母插件端子的倒钩形部可形成用于与公端1上对应公插件端子的导通臂相抵接的导电触点，从而使电路连接。
本实施例的公插件端子和母插件端子除了采用上述结构外，也可以采用本领域公知的其它结构形式，只要两者相搭接并构成可靠的电路连接即可。
除了上面所提及的结构外，本实施例连接器的其它部分还可采用现有技术的结构，在此不再赘述。
本公开的板对板连接器，在需要增加连接器插件端子数的情况下，无需片面地增加连接器长度尺寸，而是通过扩展连接器的宽度来增加插件端子的排数，可使连接器的SMT(Surface Mounted Technology，即表面贴装技术)贴片的平整度得到强化，同时通过啮合排数的增加，加强了公、母端的咬合力，提高板对板连接器公端、母端之间的接触可靠性，尤其通过公母端局部开设窗口，提高了生产加工工艺，方便中间排插件端子的模具加工和焊接检查。
实施例2
本实施例提供一种具有四排插件端子的板对板连接器(图中未示出)，其与实施例1的不同之处在于，公端上设置有四排公插件端子。具体地说，除了在公端相背两侧设置的两排公插件端子外，根据本实施例的板对板连接器还在中间设置有包括两排公插件端子的中间排公插件端子，在中间排公插件端子中的每排公插件端子处设置有公端窗口，该排公插件端子的接触臂露于窗口、且窗口两侧的两端注塑到本体内。
相应的，在母端上设置有四排母插件端子，并在母端本体中间设置有包括两排母插件端子的中间排母插件端子，在中间排母插件端子中的每排母插件端子处设置有母端窗口，该排母插件端子的接触臂露于窗口。
实施例3
本公开除了提供上述的板对板连接器外，还提供一种形成板对板 连接器的方法，包括：
形成具有至少三排公插件端子的公端；以及
形成具有至少三排母插件端子的母端，母插件端子的排数与公插件端子排数相等，
其中，公端上的位于中间排公插件端子附近的区域形成有公端窗口，且公端窗口由公端注塑模具中的用于夹持中间排公插件端子的夹持部件在注塑过程中形成；并且
其中，母端上的位于中间排母插件端子附近的区域形成有母端窗口，且母端窗口由母端注塑模具中的用于夹持中间排母插件端子的夹持部件在注塑过程中形成。
具体的，在形成具有至少三排公插件端子的公端的步骤中，至少三排公插件端子包括：
形成于公端相背两侧面的第一排公插件端子和第二排公插件端子；以及
形成于公端上且位于第一排公插件端子和第二排公插件端子之间的至少一排公插件端子，
其中，中间排公插件端子为至少一排公插件端子。
在形成具有至少三排母插件端子的母端的步骤中，至少三排母插件端子包括：
形成于母端相背两侧面的第一排母插件端子和第二排母插件端子；以及
形成于母端上且位于第一排母插件端子和第二排母插件端子之间的至少一排母插件端子，
其中，中间排母插件端子为至少一排母插件端子。
在一个示例性实施例中，中间排公插件端子的接触臂位于公端窗口处、且接触臂的位于公端窗口两侧的两端分别注塑到公端的本体中，中间排母插件端子的接触臂露出于母端窗口。
本公开的实施例通过注塑方法形成公端和母端。在注塑时，采用 相应的公端注塑模具和母端注塑模具。公端注塑模具与母端注塑模具的结构与现有技术相应的注塑模具基本相同，不同之处在于，在相应注塑模具的中间还设置有一排或一排以上的用于夹持插件端子的一个或多个夹持部件，并通过夹持部件在注塑过程中自动形成上述相应的窗口。这样，在增加插件端子数量、便于通过窗口检测插件端子焊接可靠性的同时，还便于模具加工，增加连接器的适用范围。
根据本实施例形成的板对板连接器的结构如实施例1、2所述，在此不再对其详述。
根据本公开实施例的板对板连接器及其形成方法具有如下优点：
根据本公开实施例的板对板连接器，其插件端子至少为三排。因此通过适当的扩展板对板连接器的宽度，使得插件端子数成培增加，加强了公端、母端之间的咬合力，提高公、母端间的接触可靠性。由于插件端子是在同一个板对板连接器上实现，排与排间的距离可做到最小，与现有技术的使用两个相同规格的两排板对板连接器去增加插件端子数相比，空间利用率得到大大提高。
根据本公开实施例的板对板连接器，在中间排的插件端子处增加了通透的窗口，保证中间排插件端子的焊接强度的同时也能进行焊接可靠性的检测与维修。
根据本公开实施例的板对板连接器，在中间排的插件端子处通过模具中用于夹持中间排插件端子的夹持部件在注塑过程中形成通透的窗口，在方便中间排插件端子焊接检查的同时，还提高了生产加工工艺，方便中间排插件端子的模具加工。
尽管上述对本公开做了详细说明，但本公开不限于此，本技术领域的技术人员可以根据本公开的原理进行修改，因此，凡按照本公开的原理进行的各种修改都应当理解为落入本公开的保护范围。

Claims (10)

  1. 一种板对板连接器形成的方法，包括：
    形成具有至少三排公插件端子的公端；以及
    形成具有至少三排母插件端子的母端，母插件端子的排数与公插件端子排数相等，
    其中，公端上的位于中间排公插件端子附近的区域形成有公端窗口，且公端窗口由公端注塑模具中的用于夹持中间排公插件端子的夹持部件在注塑过程中形成；并且
    其中，母端上的位于中间排母插件端子附近的区域形成有母端窗口，且母端窗口由母端注塑模具中的用于夹持中间排母插件端子的夹持部件在注塑过程中形成。
  2. 根据权利要求1所述的方法，其中，所述至少三排公插件端子包括：
    形成于公端相背两侧面的第一排公插件端子和第二排公插件端子；以及
    形成于公端上且位于第一排公插件端子和第二排公插件端子之间的至少一排公插件端子，
    其中，所述中间排公插件端子为至少一排公插件端子。
  3. 根据权利要求2所述的方法，其中，所述至少三排母插件端子包括：
    形成于母端相背两侧面的第一排母插件端子和第二排母插件端子；以及
    形成于母端上且位于第一排母插件端子和第二排母插件端子之间的至少一排母插件端子，以及
    其中，所述中间排母插件端子为至少一排母插件端子。
  4. 根据权利要求1-3任一项所述的方法，其中，所述中间排公插件端子的位于公端窗口两侧的两端分别注塑到公端的本体中。
  5. 一种板对板连接器，包括：
    具有至少三排公插件端子的公端；以及
    具有至少三排母插件端子的母端，母插件端子的排数与公插件端子排数相等，
    其中，公端上的位于中间排公插件端子附近的区域设置有公端窗口，且公端窗口由公端注塑模具中的用于夹持中间排公插件端子的夹持部件在注塑过程中形成；并且
    其中，母端上的位于中间排母插件端子附近的区域形成有母端窗口，且母端窗口由母端注塑模具中的用于夹持中间排母插件端子的夹持部件在注塑过程中形成。
  6. 根据权利要求5所述的板对板连接器，其中，所述至少三排公插件端子包括：
    设置于公端相背两侧面的第一排公插件端子和第二排公插件端子；以及
    设置于公端上且位于第一排公插件端子和第二排公插件端子之间的至少一排公插件端子，
    其中，所述中间排公插件端子为至少一排公插件端子。
  7. 根据权利要求6所述的板对板连接器，其中，所述至少三排母插件端子包括：
    设置于母端相背两侧面的第一排母插件端子和第二排母插件端子；以及
    设置于母端上且位于第一排母插件端子和第二排母插件端子之间 的至少一排母插件端子，
    其中，所述中间排母插件端子为至少一排母插件端子。
  8. 根据权利要求5-7任一项所述的板对板连接器，其中,所述中间排公插件端子的位于公端窗口两侧的两端分别与公端的本体注塑为一体。
  9. 根据权利要求8所述的板对板连接器，其中，所述中间排公插件端子具有位于公端窗口处的接触臂，且接触臂的位于公端窗口两侧的两端分别与公端的本体注塑为一体。
  10. 根据权利要求5所述的板对板连接器，其中，所述中间排母插件端子具有外露于母端窗口的接触臂。
PCT/CN2020/099096 2019-12-20 2020-06-30 板对板连接器及其形成方法 WO2021120580A1 (zh)

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US20220285873A1 (en) 2022-09-08

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