WO1991004592A1 - Edge connector and board latching device for a connector - Google Patents

Edge connector and board latching device for a connector Download PDF

Info

Publication number
WO1991004592A1
WO1991004592A1 PCT/US1990/004787 US9004787W WO9104592A1 WO 1991004592 A1 WO1991004592 A1 WO 1991004592A1 US 9004787 W US9004787 W US 9004787W WO 9104592 A1 WO9104592 A1 WO 9104592A1
Authority
WO
WIPO (PCT)
Prior art keywords
latching
section
board
connector
circuit board
Prior art date
Application number
PCT/US1990/004787
Other languages
French (fr)
Inventor
Yoshio Sato
Takashi Kamono
Ryoji Nishimura
Tsutomu Nakamura
Naoki Kumagai
Original Assignee
Amp Incorporated
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 Amp Incorporated filed Critical Amp Incorporated
Priority to KR1019910700300A priority Critical patent/KR960013851B1/en
Priority to DE69025591T priority patent/DE69025591T2/en
Priority to EP90914305A priority patent/EP0445263B1/en
Publication of WO1991004592A1 publication Critical patent/WO1991004592A1/en
Priority to US08/178,484 priority patent/US5374203A/en

Links

Classifications

    • 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
    • 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
    • H01R12/7005—Guiding, mounting, polarizing or locking means; Extractors
    • 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
    • H01R12/82—Coupling devices connected with low or zero insertion force
    • H01R12/83—Coupling devices connected with low or zero insertion force connected with pivoting of printed circuits or like after insertion
    • 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
    • H01R13/627—Snap or like fastening

Definitions

  • the present invention relates to an electrical connector, more specifically to an edge connector for a PCB (printed circuit board) and a board latching device to be used with such connector.
  • An edge connector mounted on a PCB for interconnecting another PCB contains a plurality of contacts along the longitudinal direction thereof for receiving the edge of the another PCB.
  • the edge connector is provided with latching means to latchably hold both edges of the PCBs.
  • the latching means is made from a plastic material and is integral with the connector housing.
  • such latching means, made integrally with the housing are plastic and have inherent problems in that freguent latching and unlatching causes the latching or engaging sections to wear and reduce the latching force to an impractical level.
  • a metal latch is generally stronger in latching force and more durable. However, it reguires additional force when unlatching the PCB. It is especially difficult to unlatch a PCB in an electronic apparatus or the like having a plurality of closely disposed connectors.
  • the edge connector according to the present invention is an edge connector for interconnecting two PCBs comprising an insulation housing having a plurality of contacts along the longitudinal direction and openings at both ends, and a pair of board latching devices to be inserted and secured in the openings in the insulation housing.
  • Each of the board latching devices is made of a metal plate member comprising a latching section to latch the second circuit board and an unlatching section to release the latching of the second circuit board.
  • the board latching device for a connector is integrally made of a metal plate member. It features the provision of a retaining section to mount in an opening in an insulation housing of a connector, a board latching section to latch a circuit board and an unlatching section to externally release the latching of the circuit board by the board latching section. That is, the board latching devices are secured in the openings in the connector housing and provided with the unlatching section outside of the board latching section for releasing the latching of the PCB by the board latching section through external finger operation.
  • Figure 1 is a plan view of the housing for the edge connector according to the present invention.
  • Figure 2 is a front view of the housing in Figure 1;
  • Figure 3 is a front view of the housing having board latching devices and contacts installed therein;
  • Figure 4 is an enlarged cross sectional view along the line IV-IV in Figure 3;
  • Figure 5 is a partial enlarged view of the right hand portion of the above housing
  • Figure 6 is the front view of Figure 5;
  • Figure 7 is the right side view of Figure 5;
  • Figure 8 is a cross sectional view along the line VIII-VIII in Figure 5;
  • Figure 9 is a cross sectional view along the line IX-IX in Figure 6;
  • Figure 10 is a plan view of the board latching device used in the above embodiment;
  • Figure 11 is the right side view of Figure 10;
  • Figure 12 is the front view of Figure 10;
  • Figure 13 is the back view of Figure 10;
  • Figure 14 is the left side view of Figure 10;
  • Figure 15 is the bottom view of Figure 10;
  • Figure 16 is a cross sectional view along the line XVI-XVI in Figure 11;
  • Figure 17 is a cross sectional view of the edge portion of the housing having the board latching device secured in the opening thereof;
  • Figure 18 is a central cross sectional view of the housing having the contacts and the board latching device installed therein (with the latching device hatched) ; and Figure 19 is a cross sectional view of Figure 18 further having a circuit board mounted thereon.
  • FIGS 1, 2 and 3 Illustrated in Figures 1, 2 and 3 are respectively a plan view, a front view, and a front view of an insulation housing 2 of the edge connector 1 of Figure 3.
  • Housing 2 has a large number of contacts 3 (see Figure 4) inserted in parallel with each other along the longitudinal direction thereof.
  • Each contact 3 has a tine 31 extending outwardly from the bottom of the housing 2 for making electrical connection with one of two PCBs.
  • FIG. 1 There are two openings 21 at both ends of the housing 2 to insert and secure board latching devices 5 for latching another circuit board (as referred to by a reference number 4 in Figure 19) .
  • the detailed construction of the both ends is discussed hereinafter by reference to Figures 5 through 9.
  • the detailed construction of the board latching devices 5 will be illustrated in Figures 10 through 16.
  • FIGs 5 through 9 there are symmetrically formed a pair of openings 21 to receive and retain the latching devices 5 therein.
  • Illustrated in Figure 5 is the right hand end portion in Figures 1 through 3.
  • Figures 5, 6 and 7 illustrate plan, front and right side views, respectively.
  • Figure 8 is a cross sectional view along the line VIII-VIII in Figure 5 and Figure 9 is a cross sectional view along the line IX-IX in Figure 6.
  • the opening 21 has an elongated receiving cavity 2la for receiving base section 51 of the metal latching device 5 as illustrated in Figures 10 through 16.
  • a slot portion 22 (see Figure 17) having a step portion 22a is provided to engage with a hook portion 52 of the latching device 5 inserted in the opening 21 from the above, thereby preventing the latching device 5 from being pulled out in the above direction.
  • the board latching device 5 is made of a metal plate member and has a board latching section 53 extending laterally with a curved surface 53a above a U- shaped (in cross section) base section 51 having the above mentioned hook section 52. It also has an unlatching section 54 extending horizontally above the board latching section 53.
  • the unlatching section 54 allows the upper half portion of the latching device 5 as well as the latching section 53 to deform sideways (in the direction A) by pushing it down by a finger, thereby releasing the circuit board 4 latched by the latching section 53.
  • the connector according to the present invention is made of a metal plate member and comprises the retaining section (the hook section 52 on the base section 51) for mounting on the housing 2, the latching section 53 for engaging with the circuit board 4 and the unlatching section 54 for releasing the engagement. It is, therefore, excellent in mechanical strength, durable and easy to remove the circuit board 4 by simply pushing the unlatching section 54 by a finger.
  • the formation of the curved surface 53a at the latching section 53 allows the engagement with the circuit board 4 to be released by guiding the side edge of the circuit board 4 along the curved surface 53a even if an excessive force is applied to the circuit board 4 from the back side of the connector (e.g., when the operator pushed the circuit board 4 from the back side of the connector by mistake) .
  • This is important to prevent the board latching devices 5 and the retaining sections therefor in the housing 2 from being broken.
  • the shape of the board latching device may not be limited to the particular embodiment and may be modified in many ways without departing from the spirit of the invention as long as the above mentioned functions are maintained.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

An edge connector (1) having metal latching devices (5) to latch and unlatch a circuit board (4) is disclosed. More particularly the latching devices (5) include a latching section (53) for latching the board (4) and an unlatching section (54) for releasing the board (4).

Description

EDGE CONNECTOR AND BOARD LATCHING DEVICE FOR A CONNECTOR The present invention relates to an electrical connector, more specifically to an edge connector for a PCB (printed circuit board) and a board latching device to be used with such connector.
An edge connector mounted on a PCB for interconnecting another PCB contains a plurality of contacts along the longitudinal direction thereof for receiving the edge of the another PCB. The edge connector is provided with latching means to latchably hold both edges of the PCBs. Conventionally, the latching means is made from a plastic material and is integral with the connector housing. However, such latching means, made integrally with the housing, are plastic and have inherent problems in that freguent latching and unlatching causes the latching or engaging sections to wear and reduce the latching force to an impractical level.
One approach to solve the above problems may be the use of separate metal members to be mounted on a housing. A metal latch is generally stronger in latching force and more durable. However, it reguires additional force when unlatching the PCB. It is especially difficult to unlatch a PCB in an electronic apparatus or the like having a plurality of closely disposed connectors.
It is now proposed to provide a connector having latching devices with improved latching force, durability and unlatching of the PCB and a board latching device for such connector.
The edge connector according to the present invention is an edge connector for interconnecting two PCBs comprising an insulation housing having a plurality of contacts along the longitudinal direction and openings at both ends, and a pair of board latching devices to be inserted and secured in the openings in the insulation housing. Each of the board latching devices is made of a metal plate member comprising a latching section to latch the second circuit board and an unlatching section to release the latching of the second circuit board.
Additionally, the board latching device for a connector according to the present invention is integrally made of a metal plate member. It features the provision of a retaining section to mount in an opening in an insulation housing of a connector, a board latching section to latch a circuit board and an unlatching section to externally release the latching of the circuit board by the board latching section. That is, the board latching devices are secured in the openings in the connector housing and provided with the unlatching section outside of the board latching section for releasing the latching of the PCB by the board latching section through external finger operation.
Figure 1 is a plan view of the housing for the edge connector according to the present invention;
Figure 2 is a front view of the housing in Figure 1;
Figure 3 is a front view of the housing having board latching devices and contacts installed therein; Figure 4 is an enlarged cross sectional view along the line IV-IV in Figure 3;
Figure 5 is a partial enlarged view of the right hand portion of the above housing;
Figure 6 is the front view of Figure 5; Figure 7 is the right side view of Figure 5;
Figure 8 is a cross sectional view along the line VIII-VIII in Figure 5;
Figure 9 is a cross sectional view along the line IX-IX in Figure 6; Figure 10 is a plan view of the board latching device used in the above embodiment; Figure 11 is the right side view of Figure 10; Figure 12 is the front view of Figure 10; Figure 13 is the back view of Figure 10; Figure 14 is the left side view of Figure 10; Figure 15 is the bottom view of Figure 10;
Figure 16 is a cross sectional view along the line XVI-XVI in Figure 11;
Figure 17 is a cross sectional view of the edge portion of the housing having the board latching device secured in the opening thereof;
Figure 18 is a central cross sectional view of the housing having the contacts and the board latching device installed therein (with the latching device hatched) ; and Figure 19 is a cross sectional view of Figure 18 further having a circuit board mounted thereon.
An embodiment of the present invention will be described in detail hereunder by reference to the accompanying drawings. Illustrated in Figures 1, 2 and 3 are respectively a plan view, a front view, and a front view of an insulation housing 2 of the edge connector 1 of Figure 3. Housing 2 has a large number of contacts 3 (see Figure 4) inserted in parallel with each other along the longitudinal direction thereof. Each contact 3 has a tine 31 extending outwardly from the bottom of the housing 2 for making electrical connection with one of two PCBs.
There are two openings 21 at both ends of the housing 2 to insert and secure board latching devices 5 for latching another circuit board (as referred to by a reference number 4 in Figure 19) . The detailed construction of the both ends is discussed hereinafter by reference to Figures 5 through 9. Also, the detailed construction of the board latching devices 5 will be illustrated in Figures 10 through 16. As illustrated in Figures 5 through 9, there are symmetrically formed a pair of openings 21 to receive and retain the latching devices 5 therein. Illustrated in Figure 5 is the right hand end portion in Figures 1 through 3. Figures 5, 6 and 7 illustrate plan, front and right side views, respectively. Figure 8 is a cross sectional view along the line VIII-VIII in Figure 5 and Figure 9 is a cross sectional view along the line IX-IX in Figure 6. The opening 21 has an elongated receiving cavity 2la for receiving base section 51 of the metal latching device 5 as illustrated in Figures 10 through 16. A slot portion 22 (see Figure 17) having a step portion 22a is provided to engage with a hook portion 52 of the latching device 5 inserted in the opening 21 from the above, thereby preventing the latching device 5 from being pulled out in the above direction.
The board latching device 5 is made of a metal plate member and has a board latching section 53 extending laterally with a curved surface 53a above a U- shaped (in cross section) base section 51 having the above mentioned hook section 52. It also has an unlatching section 54 extending horizontally above the board latching section 53. The unlatching section 54 allows the upper half portion of the latching device 5 as well as the latching section 53 to deform sideways (in the direction A) by pushing it down by a finger, thereby releasing the circuit board 4 latched by the latching section 53.
When the circuit board 4 is inserted in the direction B in Figure 10, a side edge 4a of the circuit board 4 rides over the curved surface 53a of the latching section 53 (by resiliently bending the upper half of the latching device 5) for engagement with the latching section 53. In this manner, the edge of the circuit board 4 is received in the contacts 3 in the housing 2 for making electrical connection. In order to unlatch the circuit board 4, the unlatching section 54 is pushed sideward from the above, thereby resiliently deforming the upper half of the latching device 5 outwardly from the engaging location of the latching section 53 with the circuit board 4.
As mentioned above, the connector according to the present invention is made of a metal plate member and comprises the retaining section (the hook section 52 on the base section 51) for mounting on the housing 2, the latching section 53 for engaging with the circuit board 4 and the unlatching section 54 for releasing the engagement. It is, therefore, excellent in mechanical strength, durable and easy to remove the circuit board 4 by simply pushing the unlatching section 54 by a finger. The formation of the curved surface 53a at the latching section 53 allows the engagement with the circuit board 4 to be released by guiding the side edge of the circuit board 4 along the curved surface 53a even if an excessive force is applied to the circuit board 4 from the back side of the connector (e.g., when the operator pushed the circuit board 4 from the back side of the connector by mistake) . This is important to prevent the board latching devices 5 and the retaining sections therefor in the housing 2 from being broken. It should be understood that the shape of the board latching device may not be limited to the particular embodiment and may be modified in many ways without departing from the spirit of the invention as long as the above mentioned functions are maintained.

Claims

CIAIMS
1. An edge connector (1) for electrically interconnecting a first and second circuit boards and having an insulating housing (2) and a plurality of contacts (3) for receiving and electrically engaging the second circuit board (4) , characterized in that a pair of board latching devices (5) are positioned in openings (21) at each end of the housing (2) and wherein the latching devices are metal plate member comprising a latching section (53) to latch the second circuit board (4) and an unlatching section (54) to release the second circuit board (4) .
2. The edge connector (1) of claim 1 characterized in that the latching section (53) includes a curved surface (53a) above a U-shaped base section (51).
3. The edge connector (1) of claim 2 characterized in that the unlatching section (54) extends outwardly of the latching section (53) .
4. The edge connector (1) of claim 2 characterized in that the latching section (53) extends laterally relative to the base section (51) .
5. The edge connector (1) of claim 3 characterized in that the unlatching section (54) extends horizontally relative to the latching section (53).
PCT/US1990/004787 1989-09-22 1990-08-15 Edge connector and board latching device for a connector WO1991004592A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019910700300A KR960013851B1 (en) 1989-09-22 1990-08-15 Edge connector for pcb. and its latching device
DE69025591T DE69025591T2 (en) 1989-09-22 1990-08-15 PCB EDGE CONNECTORS WITH LOCKING DEVICES
EP90914305A EP0445263B1 (en) 1989-09-22 1990-08-15 Edge connector with board latching devices
US08/178,484 US5374203A (en) 1989-09-22 1994-01-06 Edge connector and board latching device for a connector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1246950A JP2704553B2 (en) 1989-09-22 1989-09-22 Edge connector and board locking device for connector
JP1/246950 1989-09-22

Publications (1)

Publication Number Publication Date
WO1991004592A1 true WO1991004592A1 (en) 1991-04-04

Family

ID=17156150

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/004787 WO1991004592A1 (en) 1989-09-22 1990-08-15 Edge connector and board latching device for a connector

Country Status (8)

Country Link
US (2) US5161994A (en)
EP (2) EP0445263B1 (en)
JP (1) JP2704553B2 (en)
KR (1) KR960013851B1 (en)
DE (2) DE69025591T2 (en)
ES (1) ES2084036T3 (en)
MY (1) MY106451A (en)
WO (1) WO1991004592A1 (en)

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WO1992000618A1 (en) * 1990-06-27 1992-01-09 Amp Incorporated Circuit board connector having improved latching system
WO1993003516A1 (en) * 1991-07-29 1993-02-18 Itt Industries, Inc. Latchable p.c. board connector
EP0528259A2 (en) * 1991-08-15 1993-02-24 Foxconn International Inc. Electrical connector with improved latch mechanism
EP0472667B1 (en) * 1990-03-19 1995-08-02 The Whitaker Corporation Electronic module socket with resilient latch

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JP3249918B2 (en) * 1996-08-08 2002-01-28 ヒロセ電機株式会社 Electrical connector for circuit board with latch
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JP2000208183A (en) 1998-07-27 2000-07-28 Tyco Electronics Amp Kk Card edge connector
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Publication number Priority date Publication date Assignee Title
EP0472667B1 (en) * 1990-03-19 1995-08-02 The Whitaker Corporation Electronic module socket with resilient latch
WO1992000618A1 (en) * 1990-06-27 1992-01-09 Amp Incorporated Circuit board connector having improved latching system
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Also Published As

Publication number Publication date
DE69033716T2 (en) 2001-09-13
EP0445263A1 (en) 1991-09-11
US5161994A (en) 1992-11-10
ES2084036T3 (en) 1996-05-01
EP0445263B1 (en) 1996-02-28
DE69033716D1 (en) 2001-04-26
KR960013851B1 (en) 1996-10-10
DE69025591D1 (en) 1996-04-04
EP0663707A2 (en) 1995-07-19
EP0663707B1 (en) 2001-03-21
US5374203A (en) 1994-12-20
EP0663707A3 (en) 1996-01-31
JP2704553B2 (en) 1998-01-26
KR920702186A (en) 1992-08-12
JPH03108286A (en) 1991-05-08
MY106451A (en) 1995-05-30
DE69025591T2 (en) 1996-09-26

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