CA1273687A - Press-fit pin for circuit board connection - Google Patents
Press-fit pin for circuit board connectionInfo
- Publication number
- CA1273687A CA1273687A CA000528528A CA528528A CA1273687A CA 1273687 A CA1273687 A CA 1273687A CA 000528528 A CA000528528 A CA 000528528A CA 528528 A CA528528 A CA 528528A CA 1273687 A CA1273687 A CA 1273687A
- Authority
- CA
- Canada
- Prior art keywords
- contact
- hole
- section
- pin
- portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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
- 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
- H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
- H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
Landscapes
- Multi-Conductor Connections (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Press-fit pins for insertion into plated-through holes in printed circuit boards are disclosed. A pin embodying the invention has a compliant contact section comprising a pair of longitudinally extending beams whose cross sections are in the form of opposed C's. The radius of curvature of each of these C-sections is greater than that of the hole into which the pin is to be inserted and the ends of the arms of the C's fit a circle having a larger diameter than that of the hole. Accordingly, when the pin is inserted into the hole, the ends of the two arms of each C are forced toward each other. Also the compliant sections bend so that the C's are forced toward each other. With this arrangement the contact section has six circumferentially spaced areas of contact with the conductive surface of the hole.
Moreover, the pin can be removed and replaced by a pin of the same size, while retaining the desired reliability of electrical contact.
Press-fit pins for insertion into plated-through holes in printed circuit boards are disclosed. A pin embodying the invention has a compliant contact section comprising a pair of longitudinally extending beams whose cross sections are in the form of opposed C's. The radius of curvature of each of these C-sections is greater than that of the hole into which the pin is to be inserted and the ends of the arms of the C's fit a circle having a larger diameter than that of the hole. Accordingly, when the pin is inserted into the hole, the ends of the two arms of each C are forced toward each other. Also the compliant sections bend so that the C's are forced toward each other. With this arrangement the contact section has six circumferentially spaced areas of contact with the conductive surface of the hole.
Moreover, the pin can be removed and replaced by a pin of the same size, while retaining the desired reliability of electrical contact.
Description
~3~
Background o~ the Invention This invention relates to the solderless connection of contact pins to printed circuit boards. More specifically it relates to press-fit pins that are inserted into plated-through holes to make contacts with conductive surface layers in such holes thereby providingconnections to printed circuit conductors terminating in the surface layers. The pin that is provided by the invention has a compliant contact section that engages a surface layer in a plated-through hole at multiple circumferential locations that are symmetrica]
with respect to each other. It provides both reliable electrical contact and precise orienting of the pin for external connection of various circuit elements thereto.
Prior to the present invention the contact pin in widest use has been configured with a contact section whose cross section is square and which defines a circumscribed circle somewhat larger in diameter than the plated-through ho]e into which the pin is to be inserted.
~7hen the pin is inserted into the hole~ the edges of the contact section essentially coin the interior surface of the hole, thereby making a tight fit therein. Plns of this type are characterized by a relative~y high insertion force. Moreover in order to provide both reliable electrical contact and a reasonable limit to the 3~
insertion force, the difference between the diameter of the hole and the diameter of the circumscribing circle of the pin must be closely controlled. This in turn means that both the pin and the hole have to be made with relatively close tolerances. Moreover, if repair of the circuit board requires removal of the pin, the pin must be replaced with a larger pin to ensure reliable electrical contact in the hole. This, of course, requires the stocking of pins of various cross sections.
The deficiencies of the square pin are largely overcome by pins having radially compliant contact sections. These sections are larger than the holes into which the pins are to be inserted and when the pins are inserted into the holes, the contact sections are therefore squeezed inwardly. The resulting outwardly-directed spring forces of these contact sections maintain electrical contacts between the pins and the plated surfaces of the holes. They also provide sufficient frictional forces to retain the pins in the holes.
~ecause of their compliant nature, the contact sections adjust themselves to a relatively wide range of holediameters, thereby easing the tolerance requirements for both the pins and the holes. Moreover, the pins can be removed and replaced without seriously damaging the surfaces of the holes~
3~7 However, while radially compliant pins can, in principle, overcome all the deficiencies of the non-compliant pins, none of the prior compliant pin designs that we are aware of overcomes all of the deficiencies.
Thus some provide adequate retention forces but unduly damage the surface of the hole so that replacement of the pins is difficult. With other designs there is minimal hole damage b~t retention forces are inadequate or the insertion forces are difficult to control. Moreover some designs provide non-symmetrical retention forces so that the pins tend to cock or splay. This makes it difficult to make external connections to the pins by devices such as automatic wire wrap machinery, which requires a fair degree of precision in the locations of the ends of the pins.
Summary of the Invention The principle object of the invention therefore is to provide a press-fit pin having a compliant contact section which makes reliable contact with the cond~ctive surface of a plated hole, has a moderate insertion force and a relatively strong retention force. ~ further object of the invention is to provide a pin, having the above characteristics~ which causes relatively little damage to a plated hole upon insertion and therefore can be replaced by a pin of the same type and size.
~3~
Yet another object of the invention is to provide a pin which can be used with a relatively wide range of hole diameters while retaining the foregoing characteristics.
Yet another object of the invention is to provide a pin having the foregoing characteristics and which retains a desired orientation with respect to a printed circuit board into which it is inserted.
A pin embodying the invention has a compliant contact section comprising a pair of longitudinally extending beams whose cross sections are in the form of opposed C's. The radius of curvature of each of these C-sections is greater than that of the hole into which the pin is to be inserted and the ends of the arms of the C's fit a circle having a larger diameter than that of the hole. Accordingly, when the pin is inserted into the hole, the ends of the two arms of each C are forced toward each other. ~lso the compliant sections bend so that the C's are forced toward each other. With this arrangement the contact section has six circumferentially spaced areas of contact with the conductive surface of the hole. Moreover, the pin can be removed and replaced by a pin of the same siæe, while retaining the desired reliability of electrical contact.
~3~3 7 69~0~-~6 The present invention may be summarized as a press-fit pin for insertion into a hole defined by conductive platlng, the hole having a selected radius, said pin havin~ a conductive contact section for engagement with the conductive plating, said contact section having two symmetrically opposed beams~ each of said beams having a generally C-shaped contact portion, each of said contact portions defining an outwardly directed outer surface with a center portion lo~ated between two opposed end portions, said contact portions dimensioned so that said outer surface center portions and said outer surface end portions are located outside the circle defined by the radius of the hole, so that when said con~act section is inserted in the hole, said beams flex inwardly towards each other so that said contact portion outer surface center portions flex inwardly toward each other, and said contact portion outer surface end portions on each of said beams flex inwardly towards each other so that said conta~t portions outer surface center portions and end portions contact the conductive plating and are substantially symmetrically located around the hole.
Background o~ the Invention This invention relates to the solderless connection of contact pins to printed circuit boards. More specifically it relates to press-fit pins that are inserted into plated-through holes to make contacts with conductive surface layers in such holes thereby providingconnections to printed circuit conductors terminating in the surface layers. The pin that is provided by the invention has a compliant contact section that engages a surface layer in a plated-through hole at multiple circumferential locations that are symmetrica]
with respect to each other. It provides both reliable electrical contact and precise orienting of the pin for external connection of various circuit elements thereto.
Prior to the present invention the contact pin in widest use has been configured with a contact section whose cross section is square and which defines a circumscribed circle somewhat larger in diameter than the plated-through ho]e into which the pin is to be inserted.
~7hen the pin is inserted into the hole~ the edges of the contact section essentially coin the interior surface of the hole, thereby making a tight fit therein. Plns of this type are characterized by a relative~y high insertion force. Moreover in order to provide both reliable electrical contact and a reasonable limit to the 3~
insertion force, the difference between the diameter of the hole and the diameter of the circumscribing circle of the pin must be closely controlled. This in turn means that both the pin and the hole have to be made with relatively close tolerances. Moreover, if repair of the circuit board requires removal of the pin, the pin must be replaced with a larger pin to ensure reliable electrical contact in the hole. This, of course, requires the stocking of pins of various cross sections.
The deficiencies of the square pin are largely overcome by pins having radially compliant contact sections. These sections are larger than the holes into which the pins are to be inserted and when the pins are inserted into the holes, the contact sections are therefore squeezed inwardly. The resulting outwardly-directed spring forces of these contact sections maintain electrical contacts between the pins and the plated surfaces of the holes. They also provide sufficient frictional forces to retain the pins in the holes.
~ecause of their compliant nature, the contact sections adjust themselves to a relatively wide range of holediameters, thereby easing the tolerance requirements for both the pins and the holes. Moreover, the pins can be removed and replaced without seriously damaging the surfaces of the holes~
3~7 However, while radially compliant pins can, in principle, overcome all the deficiencies of the non-compliant pins, none of the prior compliant pin designs that we are aware of overcomes all of the deficiencies.
Thus some provide adequate retention forces but unduly damage the surface of the hole so that replacement of the pins is difficult. With other designs there is minimal hole damage b~t retention forces are inadequate or the insertion forces are difficult to control. Moreover some designs provide non-symmetrical retention forces so that the pins tend to cock or splay. This makes it difficult to make external connections to the pins by devices such as automatic wire wrap machinery, which requires a fair degree of precision in the locations of the ends of the pins.
Summary of the Invention The principle object of the invention therefore is to provide a press-fit pin having a compliant contact section which makes reliable contact with the cond~ctive surface of a plated hole, has a moderate insertion force and a relatively strong retention force. ~ further object of the invention is to provide a pin, having the above characteristics~ which causes relatively little damage to a plated hole upon insertion and therefore can be replaced by a pin of the same type and size.
~3~
Yet another object of the invention is to provide a pin which can be used with a relatively wide range of hole diameters while retaining the foregoing characteristics.
Yet another object of the invention is to provide a pin having the foregoing characteristics and which retains a desired orientation with respect to a printed circuit board into which it is inserted.
A pin embodying the invention has a compliant contact section comprising a pair of longitudinally extending beams whose cross sections are in the form of opposed C's. The radius of curvature of each of these C-sections is greater than that of the hole into which the pin is to be inserted and the ends of the arms of the C's fit a circle having a larger diameter than that of the hole. Accordingly, when the pin is inserted into the hole, the ends of the two arms of each C are forced toward each other. ~lso the compliant sections bend so that the C's are forced toward each other. With this arrangement the contact section has six circumferentially spaced areas of contact with the conductive surface of the hole. Moreover, the pin can be removed and replaced by a pin of the same siæe, while retaining the desired reliability of electrical contact.
~3~3 7 69~0~-~6 The present invention may be summarized as a press-fit pin for insertion into a hole defined by conductive platlng, the hole having a selected radius, said pin havin~ a conductive contact section for engagement with the conductive plating, said contact section having two symmetrically opposed beams~ each of said beams having a generally C-shaped contact portion, each of said contact portions defining an outwardly directed outer surface with a center portion lo~ated between two opposed end portions, said contact portions dimensioned so that said outer surface center portions and said outer surface end portions are located outside the circle defined by the radius of the hole, so that when said con~act section is inserted in the hole, said beams flex inwardly towards each other so that said contact portion outer surface center portions flex inwardly toward each other, and said contact portion outer surface end portions on each of said beams flex inwardly towards each other so that said conta~t portions outer surface center portions and end portions contact the conductive plating and are substantially symmetrically located around the hole.
2~
4a Brief Description of the Drawings FlGo 1 is a perspective view of a press-fit pin embodying the invention, showing the pin in position in a plated-through hole in a printed circuit board;
FIG ~ 2 i s a section on line 2-2 of FIG. l, through the contact section of the pin; and FIG. 3 is a schematic representation showing the contact between pin and the plated surface of the hole.
Detailed Des~ription of the Preferred Embodiments As shown in FIG~ 1~ a press-fit pin embodying the invention and generally indicated at 10 comprises a contact section 12, connecte~ at one end to a head section 14 and at the other end to a tail section 16.
The pin 10 is shown in position in a hole lR in a circuit board fragmentarily shown at 20. The hole 18 has a conductive surface layer 22, connected to a conductor 24 formed in a conventional manner on the board 20.
The pin 10 is inserted into the board lO with a downward motion (FIG. 1). Specifically, the insertion force is provided by a suitable tool that presses down on ears 26 on the head section 14. The downward movement continues until the ears 26 seat against the circuit board 20. During insertion, the contact section 12 is squeezed inwardly by the inner sur~ace of the hole 12 as described below. The resulting outward force exerted by 736~37 the contact section provides both reliable electrical contact with the surface layer 22 of the hole 18 and a friction force that serves to retain the pin 10 in the hole. The illustrated tail section 16 is suitable for a wire wrap connection to an external conductor.
As seen in FIG. 1, the contact section 12 has a mid portion 12a and upper and lower tapered portions 12b and 12c. The portion 12a, which is cylindrical in shape, provides the contact, described above, with the conductive layer 22. The tapered portions are tapered to accommodate the narrower head section 14 and tail section 16 to the wider contact portion 12a. The lower tapered portion 12c also serves as a guide which, on insertion, provides a smooth transition to the larger diameter of the contact portion, so as to minimize damage to the surface layer 22.
With reference to both Figs. 1 and 2, the contact section 12 comprises a pair of longitudinally extending beams 28 and 30. At least the mid portion of each beam has the shape of a truncated "C" in cross section, with the C's facing each other. In the unstressed condition of the contact section 12, the outer surfaces of the C's have a radius of curvature which is greater than that of the inner surface of the hole 18. Moreover, the ends 28a, 28b, 30a and 38b of the C's define a circumscribing circle whose radius is greater than that of the hole 18.
4a Brief Description of the Drawings FlGo 1 is a perspective view of a press-fit pin embodying the invention, showing the pin in position in a plated-through hole in a printed circuit board;
FIG ~ 2 i s a section on line 2-2 of FIG. l, through the contact section of the pin; and FIG. 3 is a schematic representation showing the contact between pin and the plated surface of the hole.
Detailed Des~ription of the Preferred Embodiments As shown in FIG~ 1~ a press-fit pin embodying the invention and generally indicated at 10 comprises a contact section 12, connecte~ at one end to a head section 14 and at the other end to a tail section 16.
The pin 10 is shown in position in a hole lR in a circuit board fragmentarily shown at 20. The hole 18 has a conductive surface layer 22, connected to a conductor 24 formed in a conventional manner on the board 20.
The pin 10 is inserted into the board lO with a downward motion (FIG. 1). Specifically, the insertion force is provided by a suitable tool that presses down on ears 26 on the head section 14. The downward movement continues until the ears 26 seat against the circuit board 20. During insertion, the contact section 12 is squeezed inwardly by the inner sur~ace of the hole 12 as described below. The resulting outward force exerted by 736~37 the contact section provides both reliable electrical contact with the surface layer 22 of the hole 18 and a friction force that serves to retain the pin 10 in the hole. The illustrated tail section 16 is suitable for a wire wrap connection to an external conductor.
As seen in FIG. 1, the contact section 12 has a mid portion 12a and upper and lower tapered portions 12b and 12c. The portion 12a, which is cylindrical in shape, provides the contact, described above, with the conductive layer 22. The tapered portions are tapered to accommodate the narrower head section 14 and tail section 16 to the wider contact portion 12a. The lower tapered portion 12c also serves as a guide which, on insertion, provides a smooth transition to the larger diameter of the contact portion, so as to minimize damage to the surface layer 22.
With reference to both Figs. 1 and 2, the contact section 12 comprises a pair of longitudinally extending beams 28 and 30. At least the mid portion of each beam has the shape of a truncated "C" in cross section, with the C's facing each other. In the unstressed condition of the contact section 12, the outer surfaces of the C's have a radius of curvature which is greater than that of the inner surface of the hole 18. Moreover, the ends 28a, 28b, 30a and 38b of the C's define a circumscribing circle whose radius is greater than that of the hole 18.
3~8~ , Also, the central portions 28C and 30C of the C's are spaced apart by a distance greater than the diameter of the hol.e 18.
Accordingly, when the pin 10 is inserted into the hole 18, the C ends 28a, 28b, 30a and 30b contact the conductive layer 18 and are electrically forced inwardly thereby. Also the beams 2P and 30 bend inwardly so that the distance between the central portionC 28C and 30C
conforms to the diameter of the hole 18.
For ease of illustration, FIG. 2 shows the C's in continuous contact with the conductive layer 22.
Actually, reliable electrical contact will generally take place only at the ends 28a, 28b, 30a and 30b and the central portions 28c and 30c of the C's, as shown in FIG.
3. This is because the forces exerted by the contact section 12 on the conductive layer 22 are applied primarily at these points. ~n any case, with six areas of contact, the pin provides a reliable electrical connection with the conductive layer 22. Moreover, since the contact areas are symetrical]y disposed, there is no tendency of the pin to splay and thus the tail section ~6 is assured of a prede~ermined, usually perpendicular, orientation with respect to the board 20.
Thus we have described a novel press-~it contact pin having a compliant contact section which can accommodate a relatively wide range of hole diameters in providing 6~37 reliable electrical contact with a conductive surface of a hole Moreover, the pin is readily inserted into a hole and yet, at the same time, it provides sufficient retention force. Furthermore, the pin is readily removed with minimal damage to the conductive layer in the hole and it provides a pre-determined orientation with respect to the circuit board into which it is inserted.
Accordingly, when the pin 10 is inserted into the hole 18, the C ends 28a, 28b, 30a and 30b contact the conductive layer 18 and are electrically forced inwardly thereby. Also the beams 2P and 30 bend inwardly so that the distance between the central portionC 28C and 30C
conforms to the diameter of the hole 18.
For ease of illustration, FIG. 2 shows the C's in continuous contact with the conductive layer 22.
Actually, reliable electrical contact will generally take place only at the ends 28a, 28b, 30a and 30b and the central portions 28c and 30c of the C's, as shown in FIG.
3. This is because the forces exerted by the contact section 12 on the conductive layer 22 are applied primarily at these points. ~n any case, with six areas of contact, the pin provides a reliable electrical connection with the conductive layer 22. Moreover, since the contact areas are symetrical]y disposed, there is no tendency of the pin to splay and thus the tail section ~6 is assured of a prede~ermined, usually perpendicular, orientation with respect to the board 20.
Thus we have described a novel press-~it contact pin having a compliant contact section which can accommodate a relatively wide range of hole diameters in providing 6~37 reliable electrical contact with a conductive surface of a hole Moreover, the pin is readily inserted into a hole and yet, at the same time, it provides sufficient retention force. Furthermore, the pin is readily removed with minimal damage to the conductive layer in the hole and it provides a pre-determined orientation with respect to the circuit board into which it is inserted.
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A press-fit pin for insertion into a hole defined by conductive plating, the hole having a selected radius, said pin having a conductive contact section for engagement with the conductive plating, said contact section having two symmetrically opposed beams, each of said beams having a generally C-shaped contact portion, each of said contact portions defining an outwardly directed outer surface with a center portion located between two opposed end portions, said contact portions dimensioned so that said outer surface center portions and said outer surface end portions are located outside the circle defined by the radius of the hole, so that when said contact section is inserted in the hole, said beams flex inwardly towards each other so that said contact portion outer surface center portions flex inwardly toward each other, and said contact portion outer surface end portions on each of said beams flex inwardly towards each other so that said contact portions outer surface center portions and end portions contact the conductive plating and are substantially symmetrically located around the hole.
2. The press-fit pin defined in claim 1 further including a tail section extending from said contact section, said tail section having a sufficiently small cross section to clear said hole, said contact portion outer surfaces having a generally cylindrical profile for contacting the hole, and said contact section having a tapered portion interconnecting said tail and said contact portions.
3. The press-fit pin defined in claim 1 further including a head section extending from said contact section, said contact portion outer surfaces having a generally cylindrical profile for contacting the hole, and said contact portion having an intermediate portion interconnecting said head section and said contact portions, said intermediate portion inwardly tapered from said contact portion outer surfaces.
4. The press-fit pin defined in claim 3 further including said head section having pin insertion tool guidance and coupling means, attached thereto.
5. The press-fit pin defined in claim 3 further including a pair of symmetrically opposed, laterally extending ears formed integral with said head section, said ears located at the base of said head section.
6. The press-fit pin defined in claim 3 further including a tail section extending from said contact section, said tail section having a sufficiently small cross section to clear said hole, said contact portion outer surfaces having a generally cylindrical profile for contacting the hole, and said contact section having a tapered portion interconnecting said tail and said contact portions.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82510086A | 1986-01-31 | 1986-01-31 | |
| US825,100 | 1986-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1273687A true CA1273687A (en) | 1990-09-04 |
Family
ID=25243108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000528528A Expired - Fee Related CA1273687A (en) | 1986-01-31 | 1987-01-30 | Press-fit pin for circuit board connection |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0236186A1 (en) |
| JP (1) | JPS62271376A (en) |
| CA (1) | CA1273687A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3623453A1 (en) * | 1986-07-11 | 1988-01-21 | Neumayer Karl | CONTACT PEN |
| US5264063A (en) * | 1990-05-16 | 1993-11-23 | Reflexite Corporation | Method for making flexible retroreflective sheet material |
| DE9012094U1 (en) * | 1990-08-22 | 1990-10-25 | Winchester Electronics Zweigwerk der Litton Precision Products International GmbH, 7100 Heilbronn | Pressfit contact |
| JPH0677166U (en) * | 1991-08-31 | 1994-10-28 | モレックス インコーポレーテッド | Push-fit contact |
| US5548486A (en) * | 1994-01-21 | 1996-08-20 | International Business Machines Corporation | Pinned module |
| FR2732821B1 (en) * | 1995-04-04 | 1997-07-04 | Socapex Amphenol | ELECTRICAL CONTACT WITH INSERTION FORCE |
| US5878483A (en) * | 1995-06-01 | 1999-03-09 | International Business Machines Corporation | Hammer for forming bulges in an array of compliant pin blanks |
| JP2001023716A (en) * | 1999-07-13 | 2001-01-26 | Sumitomo Wiring Syst Ltd | Terminal metal fitting |
| JP2001067866A (en) | 1999-08-30 | 2001-03-16 | Mitsubishi Electric Corp | Synchronous semiconductor storage |
| US7052288B1 (en) * | 2004-11-12 | 2006-05-30 | Fci Americas Technology, Inc. | Two piece mid-plane |
| US9570832B2 (en) | 2015-03-19 | 2017-02-14 | Semiconductor Components Industries, Llc | Press-fit pin for semiconductor packages and related methods |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1615681A1 (en) * | 1967-01-27 | 1970-06-18 | Amp Inc | Electrical connector pin and method for its manufacture |
| DE7615027U1 (en) * | 1976-05-12 | 1976-09-09 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Male connector |
| JPS593477B2 (en) * | 1977-02-23 | 1984-01-24 | 三菱化学株式会社 | Method for producing cyclic ether |
| JPS5857869A (en) * | 1981-10-02 | 1983-04-06 | Toshiba Corp | Camera for clinical diagnostic device |
| JPS593477U (en) * | 1982-06-29 | 1984-01-10 | 富士通株式会社 | terminal structure |
| US4533204A (en) * | 1982-08-23 | 1985-08-06 | Minnesota Mining And Manufacturing Company | Resilient circuit board contact |
| JPS59150183U (en) * | 1983-03-29 | 1984-10-06 | 富士通株式会社 | Structure of driving pin |
| US4625936A (en) * | 1983-06-06 | 1986-12-02 | Sine Products Company | Flexible support and carrier assembly |
| GB8416723D0 (en) * | 1984-06-30 | 1984-08-01 | Smiths Industries Plc | Electrical contact elements |
-
1987
- 1987-01-30 CA CA000528528A patent/CA1273687A/en not_active Expired - Fee Related
- 1987-01-30 JP JP62020329A patent/JPS62271376A/en active Granted
- 1987-01-30 EP EP87400213A patent/EP0236186A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62271376A (en) | 1987-11-25 |
| EP0236186A1 (en) | 1987-09-09 |
| JPH0535551B2 (en) | 1993-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4842528A (en) | Solder post retention means | |
| US4526429A (en) | Compliant pin for solderless termination to a printed wiring board | |
| EP0373197B1 (en) | Tolerance forgiving boardlock | |
| CA1273687A (en) | Press-fit pin for circuit board connection | |
| US4874338A (en) | Receptacle box terminal with improved contact area | |
| EP0664581A2 (en) | Low profile board to board connector | |
| CA2018734C (en) | Electrical connector and tapered fixed beam contact therefor | |
| EP0505646A2 (en) | Electrical contact system with cantilever mating beams | |
| EP0673083A2 (en) | Electrical connector with female contact section having dual contact areas and stationary housing mounts | |
| EP0225400B1 (en) | Contact pin | |
| US3963316A (en) | Electrical connector for a printed circuit board | |
| CA2161690C (en) | Improvements relating to component mounting arrangements | |
| US4596437A (en) | Electrical contact elements, connectors and methods of manufacture | |
| US3523273A (en) | Electrical connectors | |
| US4415220A (en) | Compliant contact pin | |
| EP0084318B1 (en) | Press fit pin | |
| US4723923A (en) | Low insertion, stamped and formed contact sleeve | |
| US5403195A (en) | Socket having an auxiliary electrical component mounted thereon | |
| CA1220254A (en) | Electrical assembly and pin-receptacle for printed circuit board | |
| EP0271357A2 (en) | Press-fit connector | |
| US5009606A (en) | Separable electrical connector | |
| EP0345140A2 (en) | Spring locking device for connector | |
| JPS61279081A (en) | Manufacture of electric contact pin for printed circuit board and die for executing the same | |
| EP0558782B1 (en) | Connector with press-fit terminal pins | |
| US6322401B2 (en) | Electrical connector having contact orientation features |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |