CN106981754B - Connector with a locking member - Google Patents
Connector with a locking member Download PDFInfo
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- CN106981754B CN106981754B CN201611204944.6A CN201611204944A CN106981754B CN 106981754 B CN106981754 B CN 106981754B CN 201611204944 A CN201611204944 A CN 201611204944A CN 106981754 B CN106981754 B CN 106981754B
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- China
- Prior art keywords
- contact
- contact portion
- connector
- housing
- housing space
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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
- H01R12/50—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
- H01R12/57—Fixed connections for rigid printed circuits or like structures characterised by the terminals surface mounting terminals
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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
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/10—Sockets for co-operation with pins or blades
- H01R13/11—Resilient sockets
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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
- 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
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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
- 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
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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
- 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
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- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
The plug connector (50) is configured such that, when a socket contact (40) is housed in a housing space (65), a first contact portion (86) of a first contact (80) first comes into contact with the socket contact (40) and moves in a housing direction in contact with the socket contact (40), and a second contact portion (95) of a second contact (90) comes into contact with the socket contact (40) and moves in the housing direction along a contact trajectory between the first contact portion (86) and the socket contact (40).
Description
Technical Field
The present invention relates to a connector which makes electrical connection with an object-side contact by making elastic contact therewith.
Background
Conventionally, as a connector of this type, an electrical connector is known which is composed of a plug connector having plug contacts and a receptacle connector having receptacle contacts, and which is electrically connected by fitting housings of the plug connector and the receptacle connector to each other and bringing both the contacts into elastic contact with each other (see, for example, patent document 1). With the above-described electrical connector, the plug contact has a pair of contact arm portions branched into two parts, the pair of contact arm portions being elastically brought into two-point contact with the receptacle contact and being inserted from both sides, thereby achieving stabilization of electrical connection.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2014-10964
Disclosure of Invention
Problems to be solved by the invention
The above-mentioned electric connector adopts a two-point contact structure, but it has the following problems: when foreign matter such as dust adheres to the surface of the contact at the time of fitting both connectors, the foreign matter is inserted between the contacts of the contact, and thus there is a possibility that conduction failure that makes contact between both connectors unstable is caused.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a connector having a two-point contact structure and capable of improving stability and reliability of electrical connection.
Means for solving the problems
In order to achieve the above object, a connector according to the present invention includes: a housing (for example, a plug housing 60 in an embodiment) having a housing space and a contact (for example, a plug contact 70 in an embodiment) held in the housing, the housing space accommodating an object-side contact (for example, a receptacle contact 40 in an embodiment) of an object-side connector (for example, a receptacle connector 10 in an embodiment) and the object-side contact being in elastic contact with the contact to perform electrical connection (for example, a plug connector 50 in an embodiment), wherein the contact has a first contact portion and a second contact portion which are capable of coming into contact with the object-side contact, the first contact portion and the second contact portion protrude into the housing space and are arranged so as to be shifted from each other in the housing direction, and when the object-side contact is housed in the housing space, the first contact portion contacts the object-side contact and moves in the housing direction by contacting the object-side contact, and the second contact portion moves in the housing direction by contacting the object-side contact along a contact trajectory between the first contact portion and the object-side contact.
In the connector configured as described above, it is preferable that the first contact portion and the object-side contact be capable of making contact with each other with a relatively wide contact width, and the second contact portion and the object-side contact be capable of making contact with each other with a relatively narrow contact width.
In the connector configured as described above, it is preferable that the second contact portion protrudes into the housing space further than the first contact portion, and that when the object-side contact is housed in the housing space and the first contact portion and the second contact portion are brought into elastic contact with the object-side contact, a contact pressure of the first contact portion is smaller than a contact pressure of the second contact portion.
In the connector having the above configuration, it is preferable that the first contact portion is provided at a distal end portion of a portion of the contact protruding into the housing space, and the second contact portion is provided at a convex portion (for example, a curved portion 95 in the embodiment) of the contact formed to protrude into the housing space in a convex shape.
Effects of the invention
According to the connector of the present invention, when the object-side contact is accommodated in the accommodating space, the first contact portion is brought into contact with the object-side contact first and is moved in the accommodating direction by being brought into contact with the object-side contact, and the second contact portion is brought into contact with the object-side contact and is moved in the accommodating direction along the contact trajectory of the first contact portion and the object-side contact, whereby the first contact portion and the second contact portion slide on the same line as the object-side contact, and the second contact portion is caused to inevitably come into contact with the contact surface from which the foreign matter has been removed by the first contact portion. Further, since the wiping effect as described above can provide stability of electrical connection without increasing the contact pressure of the contacts more than necessary, the operability of inserting and extracting the conventional connectors can be maintained even if the two-point contact structure is adopted.
In the connector having the above configuration, since the contact width of the first contact portion is made larger than that of the second contact portion, even if the second contact portion is displaced in the board width direction, the contact portion of the second contact portion can be always positioned on the contact surface from which the foreign matter has been removed by the first contact portion, and thus the allowable range of the displacement between the contacts can be expanded.
In the connector having the above configuration, since the amount of projection of the first contact portion into the housing space is smaller than the amount of projection of the second contact portion (the amount of elastic displacement of the first contact portion is smaller than the amount of elastic displacement of the second contact portion), and the elastic contact pressure of the first contact portion is suppressed from being small, the insertion force generated by the multi-point contact between the two contacts can be reduced, and the reaction force generated by the contact can be reduced when the contact makes initial contact with the mating-side contact, so that the compression force in the fitting direction (housing direction) in which the contacts interact can be reduced, and the contacts can be prevented from being bent or deformed.
In the connector configured as described above, the first contact portion is provided at the tip end portion of the contact protruding into the housing space, and the second contact portion is provided at the convex surface portion of the contact formed so as to protrude into the housing space in a convex shape.
Drawings
Fig. 1 is a sectional view of a connector device with a plug connector according to an embodiment of the present invention.
Fig. 2 is a perspective view of a receptacle connector constituting the connector device.
Fig. 3 is a sectional view of the receptacle connector.
Fig. 4 is a perspective view of the plug connector.
Fig. 5 is a cross-sectional view of the plug connector described above.
Fig. 6 (a) is a perspective sectional view of the plug connector as viewed from above, and (b) is a perspective sectional view of the plug connector as viewed from below.
Fig. 7 (a) is a front view of the plug contact of the plug connector, and (b) is a right side view of the plug contact.
Fig. 8 (a) is a perspective view of the plug contact as viewed from the left, and (b) is a perspective view of the plug contact as viewed from the right.
Fig. 9 is a perspective view of the first contact of the plug contact.
Fig. 10 is a perspective view of the second contact of the plug contact.
Fig. 11(a) is a cross-sectional view of the first contact portion of the first contact, and (b) is a cross-sectional view of the second contact portion of the second contact.
Fig. 12 is a sectional view showing a state where the receptacle connector is aligned above the plug connector.
Fig. 13 (a) is a front view showing the socket contact and the plug contact in fig. 12 being pulled out, and (b) is a perspective view showing the socket contact and the plug contact in fig. 12 being pulled out.
Fig. 14 is a sectional view of the connector device in a state where the first contact is in contact with the socket contact.
Fig. 15 (a) is a front view showing the socket contact and the plug contact in fig. 14, and (b) is a perspective view showing the socket contact and the plug contact in fig. 14.
Fig. 16 is a cross-sectional view showing a state in which the receptacle connector and the plug connector are fitted to each other.
Fig. 17 is (a) a front view showing the socket contact and the plug contact in fig. 16, and (b) a perspective view showing the socket contact and the plug contact in fig. 16.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Fig. 1 shows a connector device 1 with a plug connector according to an embodiment of the present invention, and the overall structure of the connector device 1 will be schematically described with reference to the drawing.
The connector device 1 includes: the receptacle connector 10 provided on a first substrate (not shown) and the plug connector 50 provided on a second substrate (not shown) are electrically connected to each other by fitting the two connectors 10 and 50 in a direction perpendicular to the surfaces of the substrates. That is, the connector device 1 of the present embodiment is a substrate-to-substrate connector. In the following description, for convenience, the front-rear, left-right, and up-down directions are defined with reference to the states shown in fig. 1, 2, and 4, and the fitting direction of each connector 10, 50 is designated as the up-down direction, the longitudinal direction (width direction) of each connector 10, 50 is designated as the front-rear direction, and the direction orthogonal to the up-down direction and the front-rear direction is designated as the left-right direction as the arrow direction shown in fig. 1, 2, and 4.
First, the structure of the receptacle connector (target-side connector) 10 will be described with additional reference to fig. 2 to 3. The receptacle connector 10 includes: a fixed-side case 20 fixed to the first substrate; a movable-side case 30 mounted to be movable relative to the fixed-side case 20; and a plurality of socket contacts 40 which are arranged in two rows across the housings 20 and 30 in the width direction (longitudinal direction) of the housings 20 and 30.
The fixed-side case 20 is formed of an electrically insulating material such as a synthetic resin, and has a substantially rectangular plate-shaped base wall 21 vertically opposed to the first substrate; projecting walls 22 provided at the left and right ends of the base wall 21; and side walls 23 provided at front and rear end portions of the base wall 21. The base wall 21 is provided with a cylindrical positioning projection 21a for positioning the fixed-side housing 20 on the first substrate. The protruding wall 22 is provided with a plurality of contact holding holes 22a penetrating in the vertical direction at a predetermined arrangement pitch in the front-rear direction. The side walls 23 are mounted with a pair of mounting jigs 25 for fixing the fixed-side case 20 to the first substrate and restricting excessive relative movement of the movable-side case 30 with respect to the fixed-side case 20.
The movable-side case 30 is formed of an electrically insulating material such as a synthetic resin, and has a main wall 31 vertically opposed to the base wall 21 of the fixed-side case 20; protection walls 32 provided at the left and right ends of the main body wall 31 and bent into a substantially U shape; and standing walls 33 provided at front and rear end portions of main body wall 31, and a fitting recess 34 (a fitting space for receiving the upper half of plug connector 50) surrounded by these wall surfaces and opened downward is defined at the center thereof. A convex protrusion 35 is formed on the inner surface side of the main body wall 31, and is inserted into the fitting recess 34 to protrude downward in the front-rear direction. The left and right side surfaces of the protruding portion 35 are provided with a plurality of contact accommodating grooves 35a, which are recessed in cross section and extend in the vertical direction, at a predetermined arrangement pitch in the front-rear direction. The body wall 31 is provided with a plurality of vertically penetrating contact receiving holes 31a at a predetermined arrangement pitch in the front-rear direction, and the contact receiving holes 31a and the contact receiving grooves 35a are aligned in the vertical direction and are in a positional relationship of communicating with each other. Further, a contact protection space 36 for accommodating an elastically deformed portion of the receptacle contact 40 is formed between the outer wall portion 32a and the inner wall portion 32b of the U-shaped protection wall 32.
The socket contact 40 is formed by subjecting a thin flat plate of a conductive material such as a metal to press working (punching, bending, etc.) to form a predetermined shape as shown in fig. 3, etc. The socket contact 40 includes: a holding portion 41 held by the fixed-side case 20; a lead portion 42 extending outward from an upper end of the holding portion 41 by being bent substantially vertically; a bent portion 43 connected to a lower end of the holding portion 41 and bent in a U-shape; an intermediate portion 44 connected to an upper end of the bent portion 43 and extending in the left-right direction along the surface of the main body wall 31; and a contact portion 45 connected to an end portion of the intermediate portion 44 and extending substantially vertically downward. The surface of the socket contact 40 is subjected to a desired surface treatment (plating treatment) such as plating with a thin film of gold (Au). The holding portion 41 on one end side of the socket contact 40 is press-fitted into the contact holding hole 22a and held by the fixed-side housing 20, and the contact portion 45 on the other end side is press-fitted into the contact holding groove 35a and the contact accommodating hole 31a and held by the movable-side housing 30, whereby the fixed-side housing 20 and the movable-side housing 30 are connected by the plurality of socket contacts 40 so as to be movable relatively in the front-rear direction, the left-right direction, and the up-down direction. The lead portion 42 is soldered to a wiring pattern on the first substrate so as to be electrically connectable.
The mounting jig 25 is formed by punching, bending, and the like a flat metal plate, and includes: a main plate portion 26 press-fitted into a mold holding groove 23a recessed in the side wall 23 of the fixed-side case 20; leg portions 27 extending laterally outward from a lower portion of the main plate portion 26; and a restricting portion 28 bent inward in an L-shape from the upper end of the main plate portion 26. The leg portions 27 are soldered to the mounting pattern on the first substrate.
As described above, in the receptacle connector 10 having the above-described structure, the movable-side housing 30 can be moved forward and backward, rightward and leftward, and upward and downward with respect to the fixed-side housing 20 by elastically deforming a part of the receptacle contact 40. Therefore, for example, even when the first board to which the receptacle connector 10 is fixed and the second board to which the plug connector 50 is fixed are in a state of being positionally shifted, and the two boards are fitted and connected, the movable-side housing 30 can be relatively moved with respect to the fixed-side housing 20 in a direction in which the positional shift is absorbed, and therefore the receptacle connector 10 and the plug connector 50 can be accurately fitted. By the movable-side housing 30 abutting against the mounting jig 25 locked to the fixed-side housing 20, the relative movement range of the movable-side housing 30 is limited to a predetermined range, and excessive relative movement such as plastic deformation of the socket contact 40 can be limited.
Next, the structure of plug connector 50 will be described with additional reference to fig. 4 to 11. The plug connector 50 includes: a header housing 60 fixed to the second substrate, and a plurality of header contacts 70 held in an aligned state in two rows along a width direction (longitudinal direction) of the header housing 60.
The plug housing 60 is molded from an electrically insulating material such as a synthetic resin, and includes a housing main body 61 formed in a laterally elongated rectangular parallelepiped shape, and stepped portions 68 provided at front and rear end portions of the housing main body 61.
The housing main body 61 has: a base 62 having a U-shaped cross section and extending in the front-rear direction; left and right walls 63 provided at left and right end portions of the base 62; and front and rear walls 64 provided at front and rear end portions of the base 62 and having a substantially rectangular box shape with an open upper surface as a whole. A receiving space 65 (a space for receiving the protruding portion 35 of the receptacle connector 10) having a rectangular cross section and opening upward is recessed in the center of the housing main body 61 in the right and left directions. The upper half portion (portion above the stepped portion 68) of the housing main body 61 is configured as a fitting projection 66 having an external shape capable of fitting into the fitting recess 34 of the receptacle connector 10. In addition, contact receiving spaces 67 for receiving the plug contacts 70 in a predetermined arrangement posture are provided in the base portion 62 in two rows on the left and right and arranged at a predetermined arrangement pitch in the front-rear direction. Each of the contact accommodating spaces 67 communicates with the accommodating space 65 at the upper side thereof, and is opened outward by a first contact insertion port 63a opened at the side of the left and right walls 63 and a second contact insertion port 62a opened at the bottom surface side of the base portion 62. Each of the contact insertion openings 62a, 63a is formed as an insertion opening when the plug contact 70 is inserted into the plug housing 60. In each contact housing space 67, a contact locking groove 67a is recessed in the substantially vertical direction in the vicinity of the boundary between the base 62 and the left and right walls 63.
A fixing piece 69 formed by bending a metal thin plate into an L shape is attached to the lower surface side of the step portion 68. By soldering the fixing piece 69 to the mounting pattern on the second board, the plug connector 50 can be firmly fixed to the second board. Further, a cylindrical positioning projection 68a for positioning the plug connector 50 on the second substrate is projected from the lower surface side of the step portion 68.
The plug contact 70 includes two contacts (a first contact 80 and a second contact 90) independent of each other, and has a two-point contact structure in which a contact portion of the first contact 80 and a contact portion of the second contact 90 are arranged in parallel in a fitting direction (housing direction). Each of the contacts 80 and 90 is formed in a predetermined shape as shown in fig. 7 to 10 by performing press working (punching, bending, and the like) on a thin flat plate of a conductive material such as a metal. The surface of each of the contacts 80 and 90 is subjected to a desired surface treatment (plating treatment) such as a thin film of gold (Au).
The first contact 80 includes: a holding portion 81 held by the contact locking groove 67 a; a leg portion 82 bent from the lower end of the holding portion 81 and extending toward the first contact insertion port 63 a; and an elastic portion 83 connected to an upper end of the holding portion 81 and elastically displaced in a substantially plate thickness direction with respect to the holding portion 81. The plate width (lateral width) of the first contact 80 is set to be substantially the same width throughout the entire contact. A plurality of locking projections 81a are formed on the front and rear side surfaces of the holding portion 81, and the holding portion 81 of the first contact 80 can be fixed to the plug housing 60 by the engagement of the locking projections 81a with the inner surfaces of the contact locking grooves 67 a. The elastic portion 83 has: an arm portion 84 extending obliquely upward toward the housing space 65; a curved portion 85 connected to an upper end of the arm portion 84, and bent in a U-shape so as to protrude toward an opening end side of the housing space 65; and a tip portion 86 extending obliquely downward from the lower end of the curved portion 85 toward the housing space 65. In this example, the tip portion 86 of the first contact 80 that protrudes most toward the housing space 65 is configured as a contact portion (first contact portion) that is a portion that contacts the receptacle contact 40 on the target side (hereinafter, the tip portion 86 is referred to as a "first contact portion 86"). As shown in fig. 11(a), the first contact portion 86 is formed in a rectangular shape in a cross section (a section intersecting with the longitudinal direction of the first contact 80) in which a contact portion with the receptacle contact 40 on the mating side forms a linear portion extending in the front-rear direction. Therefore, the first contact 80 is in contact (line contact) with the socket contact 40 with a contact width corresponding to the plate width of the first contact portion 86. An R chamfer 86a is formed along the plate width direction at the front end edge of the first contact portion 86.
The second contact 90 includes: a holding portion 91 held by the contact locking groove 67 a; a lead portion 92 bent from the lower end of the holding portion 91 and extending toward the second contact insertion opening 62 a; and an elastic portion 93 connected to an upper end of the holding portion 91 and elastically displaced in a substantially plate thickness direction with respect to the holding portion 91. A plurality of locking projections 91a are formed on the front and rear side surfaces of the holding portion 91, and the holding portion 91 of the second contact 90 can be fixed to the plug housing 60 by the engagement of the locking projections 91a with the inner surfaces of the contact locking grooves 67 a. The lead portion 92 is soldered to a wiring pattern on the second substrate for electrical connection. That is, the plug contact 70 including the two contacts 80 and 90 is electrically connected to the second substrate through the lead portion 92. The elastic portion 93 has: an arm portion 94 extending obliquely upward toward the housing space 65; a curved portion 95 connected to an upper end of the arm portion 94, and bent in a U-shape so as to protrude toward the accommodating space 65; and a tip portion 96 extending obliquely upward from the upper end of the curved portion 95 toward the housing space 65. In this example, the curved portion 95 of the second contact 90, which is the most protruding toward the housing space 65 side, is configured as a contact portion (second contact portion) that is a portion that contacts the receptacle contact 40 on the target side (hereinafter, the curved portion 95 is referred to as "second contact portion 95"). As shown in fig. 11(b), the second contact portion 95 has a semi-cylindrical shape or a D-shape in cross section (a cross section intersecting the longitudinal direction of the second contact 90), and a contact portion with the receptacle contact 40 on the subject side is formed in an arc shape that is curved so as to protrude toward the contact surface side of the receptacle contact 40 in the cross section. Therefore, the second contact 90 is in contact (point contact) with the socket contact 40 only at the central portion of the contact width smaller than the plate width of the second contact portion 95. The holding portion 91 of the second contact 90 and the holding portion 81 of the first contact 81 have substantially the same plate width. However, the plate width (lateral width) of the second contact 90 is formed in a shape slightly tapered from the holding portion 91 on the base end side to the tip of the tip portion 96, and the width on the tip end side is gradually narrowed. The thickness of the second contact 90 becomes gradually thinner from the holding portion 91 on the base end side to the distal end portion 96, and when a load acts on the second contact 90, an effect of dispersing the stress is exerted, and the stress concentration in the vicinity of the fulcrum portion (holding portion 91) at the time of elastic deformation is prevented.
The plug contact 70 having the above-described configuration is integrally attached to the plug housing 60 in a state where the holding portions 81 and 91 of the contacts 80 and 90 overlap each other in the plate thickness direction (a state of being held together), with the centers of the contacts in the plate width direction aligned, and in this attached state, the first contact portion 86 of the first contact 80 and the second contact portion 95 of the second contact 90 are disposed so as to protrude into the central accommodation space 65. In the housing space 65, the first contact portion 86 is disposed above the second contact portion 95 (at a position close to the upper end opening of the housing space 65), and therefore the first contact portion 86 comes into contact with the receptacle contact 40 before the second contact portion 96. Here, as described above, since the second contact portion 95 contacts the socket contact 40 only in a part of the plate width with respect to the entire width of the plate width of the first contact portion 86, the first contact portion 86 contacts the socket contact 40 with a contact width wider than the second contact portion 95. Here, by suppressing the amount of projection of the first contact portion 86 into the housing space 65 than the second contact portion 95, the elastic displacement amount at the time of contact with the receptacle contact 40 is reduced, whereby the elastic contact pressure (contact force per unit area) with respect to the receptacle contact 40 can be reduced. The first contact portion 86 and the second contact portion 95 are disposed at such an interval that they do not interfere with each other even when one or both of them are brought into contact with the receptacle contact 40 on the subject side and elastically deformed.
Next, in order to facilitate understanding of the present embodiment, a characteristic operation of the connector device 1 will be described with reference to fig. 12 to 17. In the following, a connection process of the receptacle connector 10 and the plug connector 50 will be described.
In the process of connecting the two connectors 10, 50, first, as shown in fig. 12, the receptacle connector 10 is aligned up and down with the plug connector 50. At this time, as shown in fig. 13, the receptacle contacts 40 of the receptacle connector 10 and the header contacts 70(80, 90) of the header connector 50 are separated from each other. Here, as shown in fig. 12, the contact portions 45 of the receptacle contacts 40 are arranged on the left and right side surfaces of the projecting portion 35, and the contact portions 86, 95 of the plug contacts 70(80, 90) are arranged in the housing space 65. Therefore, the fitting convex portion 66 of the plug connector 50 is fitted into the fitting concave portion 34 of the receptacle connector 10, and the projecting portion 35 of the receptacle connector 10 is inserted into the receiving space 65 of the plug connector 50, so that the first contact 80 and the receptacle contact 40 are initially brought into contact and elastically deformed as shown in fig. 14 to 15. Since the R-chamfer 86a is formed along the plate width direction at the leading edge of the first contact portion 86, the first contact portion 86 can smoothly rise at the contact portion 45 of the receptacle contact 40. Further, as described above, since the amount of elastic displacement when the first contact portion 86 is brought into contact with the receptacle contact 40 is set smaller than the second contact portion 95, the elastic contact pressure of the first contact portion 86 with respect to the receptacle contact 40 is suppressed from being small (the pressure is adjusted to a contact pressure at a level that does not affect the wiping effect), and thus the insertion force due to the multi-point contact can be reduced. Further, when the plug contact 70 (first contact 80) is initially brought into contact with the receptacle contact 40, by reducing the reaction force generated by the contact, the compression force in the fitting direction in which the contacts interact can be reduced, and the plug contact 70 can be prevented from being bent or deformed.
When the projection 35 of the receptacle connector 10 is further inserted into the receiving space 65 of the plug connector 50, the first contact portions 86 of the first contacts 80 slide on the contact portions 45 of the receptacle contacts 40 in an elastically pressed state, and the first contact portions 86 remove foreign matter (foreign matter affecting conduction) adhering to the contact portions 45 of the receptacle contacts 40 in the process of the sliding movement. At this time, since the first contact 80 is in contact with the socket contact 40 with a contact width corresponding to the board width (lateral width) of the contact 80, a wide range of foreign substances can be removed over the entire board width.
Next, as shown in fig. 16 to 17, when the projection 35 of the receptacle connector 10 is inserted into the receiving space 65 of the plug connector 50, the second contact 90 comes into contact with the receptacle contact 40 and is elastically deformed. At this time, since the cross section of the second contact portion 95 of the second contact 90 on the side of the contact surface with the socket contact 40 is formed in an arc shape, only the central portion in the plate width direction of the second contact portion 95 is in contact with the socket contact 40. The second contact portion 95 slides on the sliding track of the first contact portion 86 immediately after the first contact portion 86 (that is, the two contact portions 86 and 95 slide on the same line). Therefore, the second contact portion 95 slides on the contact surface where the first contact portion 86 performs the wiping action to remove the foreign matter.
When the fitting convex portion 66 of the plug connector 50 is completely fitted into the fitting concave portion 34 of the receptacle connector 10, the position between both connectors 10 and 50 is determined, and the contact state between the receptacle contact 40 and the plug contact 70(80, 90) is maintained. Here, as described above, since the plug contacts 70(80, 90) are in contact with the receptacle contacts 40 at two points and are elastically deformed, the receptacle contacts 40 and the plug contacts 70(80, 90) are in contact with each other with an appropriate contact force, and as a result, the connectors 10, 50 are electrically connected to each other, and signals between the substrates can be transmitted.
As described above, according to the connector device 1 of the present embodiment, when the receptacle contact 40 is accommodated in the accommodating space 65, the first contact portion 86 is first brought into contact with the receptacle contact 40 and is moved in the accommodating direction while being brought into contact with the receptacle contact 40, and the second contact portion 95 is moved in the accommodating direction while being brought into contact with the receptacle contact 40 along the contact trajectory of the first contact portion 86 and the receptacle contact 40, whereby the first contact portion 86 and the second contact portion 95 slide on the same line as the receptacle contact 40, and the second contact 90 is inevitably brought into contact with the contact surface from which the foreign matter has been removed by the first contact 80, so that the wiping effect can be improved by the cooperation between the contacts, and the stability and reliability of the electrical connection between the contacts in two-point contact can be improved. In the connector device 1 of the present embodiment, since the contact pressure of the plug contacts 70 can be increased more than necessary by the wiping effect as described above and the stability of electrical connection can be obtained, the operability of inserting and extracting the conventional connectors 10 and 50 into and from each other can be maintained even if the two-point contact structure is adopted.
In the connector device 1 of the present embodiment, the contact width of the first contact portion 86 is made larger than that of the second contact portion 95, so that even if the second contact portion 95 is displaced in the board width direction, the contact portion of the second contact portion 95 can be always positioned on the contact surface from which the foreign matter has been removed by the first contact portion 86, and the allowable range of the displacement between the contacts can be expanded.
In the connector device 1 of the present embodiment, since the amount of projection of the first contact portion 86 into the housing space 65 is smaller than the amount of projection of the second contact portion 95 (the amount of elastic displacement of the first contact portion 86 is smaller than the amount of elastic displacement of the second contact portion 95), and the elastic contact pressure of the first contact portion 86 is suppressed from being small, the insertion force due to the multi-point contact between the contacts 10 and 50 can be reduced, and the reaction force due to the contact when the plug contact 70 (the first contact 80) and the receptacle contact 40 start to contact can be reduced, and therefore the compression force in the fitting direction (the housing direction) in which the contacts interact can be reduced, and the plug contact 70 can be prevented from being bent or deformed.
In the connector device 1 of the present embodiment, the first contact portion 86 is provided at the distal end portion of the first contact 80 that protrudes into the housing space 65, and the second contact portion 95 is provided at the convex surface portion (curved portion) of the second contact 90 that is formed to protrude into the housing space 65 in a convex shape, whereby the wiping effect can be enhanced by the action of the edge of the first contact portion 86, and smooth contact with the receptacle contact 40 can be achieved by the convex curved surface (arc curved surface) of the second contact portion 95.
The present invention is not limited to the above embodiments, and can be modified as appropriate within a range not departing from the gist of the present invention.
In the above embodiments, the board mount type connector has been described as an example of the connector of the present invention, but the present invention is not limited to this configuration, and can be applied to a cable mount type connector, for example. The target-side connector is not necessarily a floating connector, and various connectors can be applied as long as the target-side contact to be connected is provided.
In addition, in the above-described embodiment, the cross section of the first contact portion is formed in a rectangular shape, and the cross section of the second contact portion is formed in a semi-cylindrical shape or a D-shape, but the configuration is not limited thereto, and the cross section shape (particularly, the sliding surface shape) may be appropriately changed as long as the contact width of the first contact portion is larger than the contact width of the second contact portion.
In the above embodiment, the plug contact includes two contacts (first contact and second contact) independent of each other, but the present invention is not limited to this configuration, and for example, the plug contact may be configured by one contact, and the first contact portion and the second contact portion may be formed by performing press working such as punching or bending on the one contact.
Claims (3)
1. A connector having a housing space and a contact held by the housing, wherein an object-side contact of an object-side connector is housed in the housing space, and the object-side contact and the contact are brought into elastic contact with each other to perform electrical connection,
the contact has a first contact portion and a second contact portion contactable with the object-side contact,
the first contact portion and the second contact portion protrude into the housing space and are arranged to be shifted from each other along the housing direction,
when the object-side contact is accommodated in the accommodating space, the first contact portion first comes into contact with the object-side contact and moves in the accommodating direction while coming into contact with the object-side contact, and the second contact portion moves in the accommodating direction while coming into contact with the object-side contact along a contact trajectory between the first contact portion and the object-side contact,
wherein the first contact portion is provided at a tip end portion of a portion of the contact protruding into the housing space,
the first contact portion and the object-side contact can be contacted with a relatively wide contact width, and at a leading edge of the first contact portion, a chamfer is formed along a board width direction,
the second contact portion and the target-side contact can be brought into contact with each other with a relatively narrow contact width, and the plate thickness of the second contact portion becomes gradually thinner from the holding portion on the base end side to the tip end portion,
the first contact portion has a rectangular cross section, and a contact portion with the object-side contact is formed as a linear portion extending in the front-rear direction in the cross section,
the second contact portion has a semi-cylindrical or D-shaped cross section, and a contact portion with the object-side contact is formed in an arc shape that is curved so as to protrude toward the contact surface side of the object-side contact.
2. The connector of claim 1,
the second contact portion protrudes into the housing space more than the first contact portion,
when the object-side contact is accommodated in the accommodating space and the first contact portion and the second contact portion are in elastic contact with the object-side contact, the contact pressure of the first contact portion is smaller than the contact pressure of the second contact portion.
3. The connector of claim 1,
the second contact portion is provided on a convex surface portion of the contact formed to protrude into the housing space in a convex shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-254333 | 2015-12-25 | ||
| JP2015254333A JP2017117734A (en) | 2015-12-25 | 2015-12-25 | connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106981754A CN106981754A (en) | 2017-07-25 |
| CN106981754B true CN106981754B (en) | 2021-04-02 |
Family
ID=59010715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611204944.6A Active CN106981754B (en) | 2015-12-25 | 2016-12-23 | Connector with a locking member |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2017117734A (en) |
| CN (1) | CN106981754B (en) |
| DE (1) | DE102016123758A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6706512B2 (en) * | 2016-02-29 | 2020-06-10 | ケル株式会社 | connector |
| JP7184996B2 (en) * | 2017-07-11 | 2022-12-06 | イリソ電子工業株式会社 | connector |
| JP7139139B2 (en) * | 2018-04-18 | 2022-09-20 | イリソ電子工業株式会社 | connector |
| US10868376B2 (en) * | 2018-08-28 | 2020-12-15 | Te Connectivity Corporation | Header connector including press-fit signal contacts |
| TWM589914U (en) * | 2019-06-20 | 2020-01-21 | 禾昌興業股份有限公司 | High speed transmission board to board connector |
| JP7358171B2 (en) | 2019-10-02 | 2023-10-10 | ヒロセ電機株式会社 | electrical connectors |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662098A (en) * | 2008-08-27 | 2010-03-03 | 第一电子工业株式会社 | Fixture and floating connector using the same |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3825614B2 (en) * | 2000-08-08 | 2006-09-27 | 山一電機株式会社 | Card edge connector |
| JP2002237340A (en) * | 2001-02-09 | 2002-08-23 | Yamaichi Electronics Co Ltd | Card edge connector |
| JP4969838B2 (en) * | 2005-11-28 | 2012-07-04 | モレックス インコーポレイテド | Floating type connector |
| JP5001193B2 (en) * | 2008-02-19 | 2012-08-15 | 富士通コンポーネント株式会社 | Connector device |
| JP2012221592A (en) * | 2011-04-04 | 2012-11-12 | Fujitsu Component Ltd | Connector |
| US9118144B2 (en) * | 2012-06-08 | 2015-08-25 | International Business Machines Corporation | Multi-level connector and use thereof that mitigates data signaling reflections |
| JP5809606B2 (en) | 2012-06-28 | 2015-11-11 | ケル株式会社 | Electrical connector |
| JP5486121B1 (en) * | 2013-07-24 | 2014-05-07 | イリソ電子工業株式会社 | Electrical connector |
| JP5481595B1 (en) * | 2013-08-20 | 2014-04-23 | イリソ電子工業株式会社 | Electrical connector |
| JP6388472B2 (en) * | 2013-12-09 | 2018-09-12 | 富士通コンポーネント株式会社 | Contacts and connectors |
-
2015
- 2015-12-25 JP JP2015254333A patent/JP2017117734A/en active Pending
-
2016
- 2016-12-08 DE DE102016123758.2A patent/DE102016123758A1/en not_active Withdrawn
- 2016-12-23 CN CN201611204944.6A patent/CN106981754B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662098A (en) * | 2008-08-27 | 2010-03-03 | 第一电子工业株式会社 | Fixture and floating connector using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016123758A1 (en) | 2017-06-29 |
| JP2017117734A (en) | 2017-06-29 |
| CN106981754A (en) | 2017-07-25 |
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