CA1231403A - Coaxial multicore receptacle - Google Patents
Coaxial multicore receptacleInfo
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- CA1231403A CA1231403A CA000486447A CA486447A CA1231403A CA 1231403 A CA1231403 A CA 1231403A CA 000486447 A CA000486447 A CA 000486447A CA 486447 A CA486447 A CA 486447A CA 1231403 A CA1231403 A CA 1231403A
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Abstract
ABSTRACT OF TOE DISCLOSURE
A coaxial multi core receptacle is provided which is characterized in that a plurality of ground pins are set upright on an insulating substrate and arranged in a matrix pattern, a plurality of signal pins are set upright on the substrate each being located at the center of each box of the matrix pattern, first metallic lattice boards are provided perpendicularly to the substrate each being positioned correspondingly to and above each column of the ground pins, and second metallic lattice boards are provided perpendicularly to the substrate each being positioned correspondingly to and above each row of the ground pins.
These first and second lattice boards are crossing mutually orthogonally to define angular coaxial contact insertion holes surrounded by these boards and arranged in the matrix pattern. Each of the first lattice boards is formed with notches in the end portion on the side of the substrate to provide ground pin contact springs which are in elastic contact with the corresponding ground pins.
As a coaxial contact is fitted and inserted in the coaxial contact insertion hole, a center conductor of the coaxial contact comes into contact with the corre-sponging signal pin.
A coaxial multi core receptacle is provided which is characterized in that a plurality of ground pins are set upright on an insulating substrate and arranged in a matrix pattern, a plurality of signal pins are set upright on the substrate each being located at the center of each box of the matrix pattern, first metallic lattice boards are provided perpendicularly to the substrate each being positioned correspondingly to and above each column of the ground pins, and second metallic lattice boards are provided perpendicularly to the substrate each being positioned correspondingly to and above each row of the ground pins.
These first and second lattice boards are crossing mutually orthogonally to define angular coaxial contact insertion holes surrounded by these boards and arranged in the matrix pattern. Each of the first lattice boards is formed with notches in the end portion on the side of the substrate to provide ground pin contact springs which are in elastic contact with the corresponding ground pins.
As a coaxial contact is fitted and inserted in the coaxial contact insertion hole, a center conductor of the coaxial contact comes into contact with the corre-sponging signal pin.
Description
1 _ COAXIAL MULTI CORE RECEPTACLE
BACKGROUND OF THE INVENTION
_ . . . _ _ Field of the Invention This invention relates to a coaxial multi core receptacle for connection of coaxial contacts to a number of signal pins set upright on a substrate Description of the Prior Art The system is known wherein a plurality of signal pins provided on a substrate are applied respectively with input signals, -these input signals are processed in a circuit provided on the substrate, and a plurality of resulting signals are output through signal pins provided also on the substrate In such a system, as the transmission rate of the input and/or output signal becomes high a coaxial cable must be used for transmission of these signals. In such a case as above, a coaxial connector for connection ox the coaxial cable is mounted on the substrate in the prior art. The coaxial connector is suited for connection with the coaxial cable and can shield the signal sufficiently from external noise; but, it is expensive large it dimension and needs a comparatively annoying connecting work. Accordingly, in case a number of coaxial connector have to be mounted on the substrate, a desired system becomes a remarkably large, expensive unit and needs a number of processing steps in connecting.
In contrast to the above, another system can be thought wherein a number of signal pins are set upright on the substrate and a coaxial contact, having a similar structure as that of the coaxial cable, but smaller in size, is simply fitted and connected to the signal pin via its center conductor. In this latter system, an outer conductor does not exist in a connected section between the signal :"
~23~ 3 pin and the coaxial contact, so -that if the signal pins are located mutually closely, crosstalk occurs between signals on adjacent signal pins. Because of the above, a coaxial multi core receptacle, including a number of signal pins provided mutually closely to which a coaxial contact is connected easily and raising no crosstalk problem, was unknown up to now.
SUMMARY OF THE INVENTION
It is the object of the present invention to provide a coaxial multi core receptacle which is miniaturizable even if a number of coaxial contacts are to be connected therewith can reduce remarkably crosstalk between connection elements, and is simplified in structure and easy to connect In brief, according to the present invention, a plurality Ox ground pins are arranged in a matrix pattern and set upright on a substrate, and a plurality ox signal pins are set upright on the substrate each being located at about the center of each unit square area surrounded by adjacent rows and adjacent columns of the matrix pattern.
First metallic lattice boards are provided perpendicularly to the substrate each being located correspondingly to and above each column ox the ground pins, and second metallic lattice boards are also provided perpendicularly to the substrate each being located correspondingly to and above each row of the round pins. The first lattice boards and second lattice boards are crossing mutually orthogonally to define square coaxial contact insertion holes arranged in the matrix pattern which are surrounded by both lattice boards, each signal pin being located at the axial center position of each coaxial contact insertion hole.
Each first lattice hoard is fairyland with notches extending inward from the rear edge of the board on the side of the substrate to provide ground pin contact springs corresponding to the ground pins, each ground pin contact spring coming into elastic contact with the corresponding ground pin. Each portion between adjacent ground pin contact springs of the first lo lice board defines a coaxial ground spring which is designed so that as a coaxial contact is inserted in -the coaxial contact insertion hole the coaxial ground spring is brought into elastic contact with an outer conductor of -the coaxial contact with a center conductor of the inserted coaxial contact coming into contact with the signal pin. Each of the first lattice boards is formed with first kerns extending from the front edge toward the substrate along a line passing through each ground pin spring, each of the second lattice boards is formed with second kerns extending from the rear edge on the side of the substrate in the direction of separating from the substrate on each row position of the ground pins, the opposite portion of each second lattice board -to the substrate is inserted and coupled in the first kerns, and the portion of each first lattice board on -the side of the substrate is inserted and coupled in the second kerns.
Each of the first lattice boards is composed of two metallic plates joined back to back, so that each of the ground pin contact springs is made of a pair of mutually opposing spring segments between which the corresponding ground pin is inserted. Similarly, each of the coaxial round spring is made of a pair of mutually opposing spring segments, which are separated from each other and portions of which are positioned in the coaxial contact insertion holes on either side thereof.
A guide board made of insulating material is interposed between the substrate and the first and second lattice boards. In the guide board there are bored ground pin insertion thrills through which the ground pins pass and signal pin insertion thrills through which the signal pins pass. The guide board, first lattice boards and second lattice boards are disposed in and maintained by an outer frame. Therefore, the outer frame supporting -the guide board, first lattice boards and second lattice boards may be designed so that i-t can be mounted on a substrate on which the foregoing pins are set upright Each portion between adjacent second kerns of each second lattice board is defined as a driving segment, -the side edges of which are positioned so as to push the ground pin contact springs against the ground pins. Each of the second lattice boards is held by the outer frame retractable with respect to the guide board. In assembling under the state that the second lattice boards are spaced from the guide board, the outer frame is attached to the substrate, each ground pin is inserted between the corresponding ground pin springy segments, thereafter the second lattice boards are shifted toward the substrate, whereby the ground pin springs are put in sufficient press contact with the ground pins by means of the driving s egr~lent s .
BRIEF DESCRIPTION OF THE DRUNKS
Fig. 1 is a perspective view showing a substrate, ground pins and signal pins;
Fig. 2 is a plan view corresponding to Fig. 1;
Fig. 3 is a plan view showing part of a guide board 14 through which -the ground pins and signal pins pasts;
Fig. 4 is a plan view showing part of lattice boards 21(s), 36(p) arranged on the guide board;
Fig. 5 is a cross sectional view -taken along line Lo 3 V-V in Fig. 4;
Fake. 6 is a cross sectional view taken along line VI VI in Fig. 4;
Fig, 7 is a cross sectional view taken along line VII-VII in Fig. 4;
Fig. 8 is a cross sectional view identical to Fig. 5, except that the lattice boards 36~p) are spaced a little from the guide board 14;
Fly. 9 is a cross sectional view taken along line IX-IX in Fig. 4;
Fig. 10 is a perspective view showing part of the lightweights boards 21(s), 36(p) arranged on the guide board 14;
Fig. 11 is an exploded perspective view showing the relation between the lattice boards 21(s), 36(p) and an outer frame 41;
Fig. 12 is a perspective view showing the guide board 14 and lattice boards 21(s), 36(p) assembled in the outer frame 41; and Fig. 13 is a perspective view corresponding to Fig. 12, except that the substrate 11 is attached to and an indication board 75 is spaced from the unit.
DESCRIPTION OF TIE PREFERRED EMBODI~IEN'r Embodiment of the present invention will now be described with reference to the drawings.
As sown in Fig. 1, a large number of ground pins 12(1,1) through 12(n,n) and signal pins 13(1,1) through Nina) are set upright on an insulclting substrate 11~
As shown in Fig. 11, metallic lattice boards 21(1) through 21(n) are arranged side by side at a regular interval and other metallic lattice hoards 36(1) through 36(n~ are also arranged stale by side at a regular interval arid disposed so as to cross orthogonally the former lattice boards 21(1) through 21(n). As shown in Fig 13, by these lattice boards 21(1) through 21(n) and 36(1) -through 36(n) a matrix pattern composed of square holes I for insertion OX coaxial contacts is formed. These lattice boards 21(1) through 21(n) and 36(1) through 36(n) are surrounded and maintained by side frames 41-1 through 42-2, these lattice boards and side frames are mounted on the substrate 11 shown in Fig.
1, and each signal pin is located inside each coaxial contact insertion hole 61.
As shown in Figs. 1 and 2, the substrate 11 made of insulator, such as synthetic resin, is shaped substantially square. On -the substrate 11 the ground pins 12(1,1) through 12(n,n) are arranged in a square matrix pattern and set upright. At about the center of each unit square area enclosed by adjacent rows and adjacent calms of the ground pins of the matrix pattern, each signal pin 13(1,1) through 13(n-1,n-1) is set upright on the substrate 11. Although not shown, on the substrate 11 a signal processing circuit will be provided, for example, whose ground lines will be connected to the respective ground pins 12(1,1) through 12(n~n) and whose input/output terminals will be connected to respective signal pins 13(1,1) through 13(n-1,n-1)~ or, pins and/or sockets (also not shown) will be provided on the opposite side of the substrate 11 to the signal pins 13(1,1) through 13(n-1/n--l) and connected to those signal pins, which in turn will be connected -through connecting means to LSI elements, for example.
The illustrated embodiment includes a guide board 14 interposed between the substrate 11 and the lattice boards 21(s) (s = 1, 2, ..., n) and up (p = 1, 2, ..., n).
3~L~03 As shown partially in Fig. 3, in this guide board 14 there are bored ground pin thrills 15(1,1) through 15(n,n) through which the ground pins 12(1,1) through 12(n,n) pass respectively and signal pin thrills 16(1,1) through 16(n-1,n-1) through which the signal pins 13(1,1) through 13(n-1,n-1) pass respectively. As shown partially in Figs. 5 and 6, the inner periphery of each of the ground pin thrills 15(1,1) through 15(n,n) and signal pin thrills 16(1,1) through 16(n-1,n-1) is tapered and enlarged as approaching the substrate 11 so that the ground pins 12(1,1) through 12(nrn) and signal pins 13(1,1) through 13(n-1,n-1) can pass smoothly through the thrills.
As shown in Fig. 10, the lattice boards 21(s) of the embodiment are designed so that each board is composed of two conductive plates aye, 21b(s) joined back to back. The lattice board 21(s) is shaped substantially rectangular in appearance and formed with kerns 23~p,s) extending from the front edge (upper edge in Fig. 10) toward the guide board I mutually puerilely at a regular interval On the extended lines of the kerns 23(p,s) (p = 1, 2, ... n) the ground pin thrills 15(p,s) are located.
In the rear edge of the lattice board 21(s) on the side of the guide board 14 contact springs Jo (pus) for the ground pins are Loomed which come into elastic contact with the ground pins 12(p,s). Specifically, as shown in Figs. 7 and 10, notches 63 are formed in the rear edge of the lattice board 21(s) on the side of the guide board 14 so as to oppose to both sides of each ground pin thrill 15(p,s). Spacing between adjacent notches 63 is uniform, whereby each grourld pin contact spring 24(p,s) is provided opposite to the corresponding ground pin thrill spouse).
Each ground pin contact spring ups is made integrally go 33 with the conductive plates aye, 21b(s) and composed of mutually opposing spring segments apse 2~b(p,s).
Specifically, as shown in Figs. 5 and 10, the spring segments apse), 24b(p,s) separate gradually from each other as approaching the guide board 14, then come close together abruptly, and separate gradually again. The ground pin 12(p,s) is elastically clamped between the approached or closed portions of the spring segments. The free ends of -the spring segments apse), 24b(p,s) are spaced from each other so that the ground pin 12(p,s) can fit easily between the spring segments.
In the embodiment, each portion between adjacent ground pin contact springs 24(p,s) and 24(p~1,s) is defined as a coaxial ground spring 30(p,s). Each coaxial ground spring 30(p,s) is composed of spring segments apse), 30b(p,s) which are extensions of the conductive plates aye, 21b(s). As shown in Figs. 6 and 10, the midway portions in the lengthwise direction of the sprint segments apse), 30b(p,s) are spaced from each other and forming coupling projections aye, 64b which are located respectively on one side each of adjacent coaxial contact insertion holes 61.
On -the free ends of the spring segments apse), 30b(p,s) narrow portions aye, 22b are formed projectingly which are inserted in a coupling hole 25(p,s) bored in -the guide board 14 between adjacent signal pin thrills 16(p,s-1) and 16(p,s) so that the coaxial ground spring 30(p,s) is positioned rightly. For clear understanding of the structure one of the coaxial ground springs 30(p,s) is cut off in Fig. 10.
In the embodiment, the lattice boards 36(p) intersect orthogonally the lattice boards 21(s) such that in the rear edges of the lattice boards 36(p) on the side 1;~3~3 g of the guide board 14 kerns 35(p,s) are formed core-spondingly to the ground pin thrills 15(p,s), the rear edge portions of the lattice boards 36(p) are fitted and coupled in the kerns priest and the front edge portions of the lattice boards 21(s) are fit-ted and coupled in the kerns 35(p,s). In this mutually fitted and coupled state the inner ends of the kerns 23(p,s) coincide with the inner ends of the kerns 35(p,s) in level.
The open end portion of each of the kerns 35(p,s) formed in the lattice boards 36tp) on the side of the guide board 14 is enlarged widths to form a substantially rectangular notch 38(p,s).
in order to get a good contacted relation when the ground pins 12(p,s) are inserted so as to come into contact with the ground pin contact springs 24(p,s), a sufficient frictional force is desirable between -them However, as the number of the ground pins increases the total force of friction becomes too large Therefore, in the embodiment, the ground pins 12(p,s) are inserted and positioned between the spring segments apse and 24b(p,s) before fully inserting the lattice boards 36(p) as shown in Fig. 8 so that substantially no pressure is needed for insertion of the pins 12(p,s), and thereafter the spring segments apse), 24b(prs~ are then forced to be pushed elastically against the ground pins 12(p,s) by fully inserting the lattice boards 36~p) which are made retractable with respect to the guide board 14. That is to say, when the lattice boards 36(p) are spaced prom the guide board 14 more than a given distance as shown in Fig.
8, the ground pin spring segments apse), 24b(p,s) are separated prom the ground pins 12(p,s) or slightly in contact therewith. Accordingly in the state where the lattice boards 21(s) alone are located at ultimately L4~3 expected positions with respect to the guide board 14, each ground pin 12(p,s) can be inserted and positioned between the spring segments apse), 24b(p,s) with no insertion force.
Portions of each lattice board 36(p) between adjacent notches 38(p,s) and 38(p,s~1) are defined as driving segments 65, and the gap do between the free ends of spring segments 24b(p,s) and apse) opposite to the edges of each driving segment 65 is made, in the position shown in Fig. 8, narrower than the width we of the driving segment 65. Accordingly, as the lattice boards 36(p) are shifted close to the guide board 14 to a given extent, the gap between the spring segments 24b(p,s) and apse) on both sides of the driving segment 65 is widened by the driving segment 65, as shown in Fig 5 r whereby the ground pins 12(p,s) are clamped elastically by the pairs of spring segments apse), 24b(p,s) and a good contacted state is obtained there between. By shifting the lattice boards 36(p) one after another or several at a time from the position shown in Fig. 8 to the position shown in Fig. 5 etch ground pin 12(p,s) can be put in good contact with the ground pin contact spring without requiring a large force.
As guide means which become effective when the lattice boards 36(p) are fitted in and shifted relatively with respect to the lattice boards 21ts), substantially hemispherical projections aye, 66b are formed in opposing relation to each other on both sides of the lattice boards 21(s) as shown in Figs. 6 and 10 through pressing, which are located in a midway position between -the kerns 23(p/s) and the round pin contact springs 24(p,s) of the lattice boards 21(s) so as to guide the lattice boards 36(p) there between.
As shown in Fix. 11, the lattice boards [33 21(s), 36(p), and guide board 14 are surrounded by side frames 41-1, 41-2, 42-1, 42-2 (the latter two, 42-1, 42-~, are shown in Fig. 12) of the outer frame 41 and supported thereby.
In the inner surfaces of the side frames 41-1, 41-2 concave portions 43-1, 43-2 (43-2 not shown) are formed extending longitudinally, and below and along the concave portions 43-1, 43-2 fixing grooves 44-1, 44-2 (44-2 not shown) are formed in which the marginal edge portions of the guide board 14 are inserted. In inner upper edge portions of the side frames 41-1, 41-2 kerns 45(p) (p =
1, 2, ... n) are formed to reach the concave portions 43-1, 43-2, and the end portions of the lattice boars 36(p) are inserted in the kerns 45(p~.
The side frames 42-1, 42-2 are to be mounted orthogonally to the side frames 41-1, 41-2. Similarly, there are formed concave portions 46~1, 46-2, fixing grooves 47-1, 47-2, and kerns 48(s) us = 1, 2, ... n) in which the end portions of the lattice boards 21(s) are inserted.
On either end of each of -the lattice boards 21(s~
and 36(p) projection segments 71~ 72, 73, 74 (74 not shown are formed which are inserted and coupled in the concave portions 43-1, 43-2, 46-1, 46-2, respectively, In assembling, the peripheral portion of the guide board 14 is inserted in the fixing grooves 44-1, 44-2, 47-1, 47-2, the projection segments 71, 72, 73, 74 are inserted respectively in the concave portions 43-1, 43-2, 46-1, 46-2 so that the side frames 41-1, 41-2, 42-1, 42-2 are attached to the periphery of the lattice boards 36(p) and lattice boards 21(s) as shown in Fig, 12, and adjacent ones of the side frames 41-1, 41-2, 42-1 and 42-2 are secured together at the ends by screws 49-1 through 49-4 (49-3 not shown), thereby resulting in the assembled outer frame 41 consisting 3~L~03 of side frames aye 41-2, 42-1, 42-2. At this stage, the lattice boards 36(p) are assembled; but spaced a little from the guide board 14 as shown in Fig 8. The guide board 14 is then pushed against the substrate 11 to stake the narrow portions aye, 22b of the coaxial ground springs 30(p,s) into the corresponding coupling holes 25(p,s).
Then, the substrate 11 is mounted on the guide board 14 so that the ground pins and signal pins pass through the thrills of the guide board 14 thereby positioning the ground pins in between the corresponding spring segments Thereafter, the lattice boards 36(p) are pushed in completely one after another or several at a time as shown in Fig. 13, thereby resulting in the position shown in Fig. 5.
When necessary, an indication board 75 is disposed so as to cover the upper side of the unit and secured to the substrate 11 and outer frame 41 together. In the indication board 75 thrills 50(1,1) through 50(n-1,n-1) are Bud at positions corresponding to the signal pins 13(1,1) through 13(n-1,n-1). If addresses indicating the coaxial contacts to be inserted are presented in connection with the thrills 50(1,1) through 50(n-1,n-1), these indicated addresses are convenient for connection work.
For indication, different colors may be used for different groups of signals, for example In case the number of the ground pins is as much as one thousand, far example, the substrate 11 and outer frame 41 can be secured and maintained mutually only by the frictional force existing between the ground pins and ground pin spring segments If necessary, appropriate locking means may be used; for example, bolts are inserted -through the outer frame 41 and substrate 11 and secured by nuts to clamp -them.
In the assembled state, as a coaxial contact 32 is inserted in one thrill, for example, 50(2,s), as shown in Figs. 4 and 6, the coaxial ground spring segments 30b(p~s) and apse) are elastically deformed by an outer conductor on tune periphery of the coaxial contact 32 and come into mutual contact therewith. A center conductor (not shown) of the coaxial contact 32 is made in the form of a female contact; thus, as the signal pin 13(p,s) is inserted in -this female contact, they come in-to elastic contact with each other. At this step, each coupling projections 64b, aye of the coaxial ground spring segments 30b(p,s), apse) are fitted in and coupled elastically with a ring-shaped coupling recess formed on the periphery at the end portion of the coaxial contact 32, whereby an lo operator can feel the click reaction of insertion ox the coaxial contact 32 and this contacted state is maintained.
As is apparent from the foregoing, the coaxial multi core receptacle according to the present invention has a comparatively simple structure and can easily be attached and assembled to the substrate on which the signal pins and ground pins are set upright. In the assembled state, the outer conductors of the coaxial contacts being connected to a nurser of signal pins set upright on the substrate are surrounded by the lattice boards 21(s), 36(p) and connected to and kept in contact with the coaxial ground springs, and each connected section is electrically shielded sufficiently from others.
Accordingly, in the present invention, the signal pins can be located mutually closely, the present receptacle can be fabricated in -the form ox a small-si~ed unit even though a large number of signal pins are to be included, and can be produced at low costs in comparison to the conventional receptacle using the coaxial connectors ~31~03 Further, even if a large number of ground pins are included in the unit, the ground pins and ground pin springs can be put in contact with each other under sufficient pressure by pushing in a little the lattice boards 36~p) one after another or several at a time after assembled.
BACKGROUND OF THE INVENTION
_ . . . _ _ Field of the Invention This invention relates to a coaxial multi core receptacle for connection of coaxial contacts to a number of signal pins set upright on a substrate Description of the Prior Art The system is known wherein a plurality of signal pins provided on a substrate are applied respectively with input signals, -these input signals are processed in a circuit provided on the substrate, and a plurality of resulting signals are output through signal pins provided also on the substrate In such a system, as the transmission rate of the input and/or output signal becomes high a coaxial cable must be used for transmission of these signals. In such a case as above, a coaxial connector for connection ox the coaxial cable is mounted on the substrate in the prior art. The coaxial connector is suited for connection with the coaxial cable and can shield the signal sufficiently from external noise; but, it is expensive large it dimension and needs a comparatively annoying connecting work. Accordingly, in case a number of coaxial connector have to be mounted on the substrate, a desired system becomes a remarkably large, expensive unit and needs a number of processing steps in connecting.
In contrast to the above, another system can be thought wherein a number of signal pins are set upright on the substrate and a coaxial contact, having a similar structure as that of the coaxial cable, but smaller in size, is simply fitted and connected to the signal pin via its center conductor. In this latter system, an outer conductor does not exist in a connected section between the signal :"
~23~ 3 pin and the coaxial contact, so -that if the signal pins are located mutually closely, crosstalk occurs between signals on adjacent signal pins. Because of the above, a coaxial multi core receptacle, including a number of signal pins provided mutually closely to which a coaxial contact is connected easily and raising no crosstalk problem, was unknown up to now.
SUMMARY OF THE INVENTION
It is the object of the present invention to provide a coaxial multi core receptacle which is miniaturizable even if a number of coaxial contacts are to be connected therewith can reduce remarkably crosstalk between connection elements, and is simplified in structure and easy to connect In brief, according to the present invention, a plurality Ox ground pins are arranged in a matrix pattern and set upright on a substrate, and a plurality ox signal pins are set upright on the substrate each being located at about the center of each unit square area surrounded by adjacent rows and adjacent columns of the matrix pattern.
First metallic lattice boards are provided perpendicularly to the substrate each being located correspondingly to and above each column ox the ground pins, and second metallic lattice boards are also provided perpendicularly to the substrate each being located correspondingly to and above each row of the round pins. The first lattice boards and second lattice boards are crossing mutually orthogonally to define square coaxial contact insertion holes arranged in the matrix pattern which are surrounded by both lattice boards, each signal pin being located at the axial center position of each coaxial contact insertion hole.
Each first lattice hoard is fairyland with notches extending inward from the rear edge of the board on the side of the substrate to provide ground pin contact springs corresponding to the ground pins, each ground pin contact spring coming into elastic contact with the corresponding ground pin. Each portion between adjacent ground pin contact springs of the first lo lice board defines a coaxial ground spring which is designed so that as a coaxial contact is inserted in -the coaxial contact insertion hole the coaxial ground spring is brought into elastic contact with an outer conductor of -the coaxial contact with a center conductor of the inserted coaxial contact coming into contact with the signal pin. Each of the first lattice boards is formed with first kerns extending from the front edge toward the substrate along a line passing through each ground pin spring, each of the second lattice boards is formed with second kerns extending from the rear edge on the side of the substrate in the direction of separating from the substrate on each row position of the ground pins, the opposite portion of each second lattice board -to the substrate is inserted and coupled in the first kerns, and the portion of each first lattice board on -the side of the substrate is inserted and coupled in the second kerns.
Each of the first lattice boards is composed of two metallic plates joined back to back, so that each of the ground pin contact springs is made of a pair of mutually opposing spring segments between which the corresponding ground pin is inserted. Similarly, each of the coaxial round spring is made of a pair of mutually opposing spring segments, which are separated from each other and portions of which are positioned in the coaxial contact insertion holes on either side thereof.
A guide board made of insulating material is interposed between the substrate and the first and second lattice boards. In the guide board there are bored ground pin insertion thrills through which the ground pins pass and signal pin insertion thrills through which the signal pins pass. The guide board, first lattice boards and second lattice boards are disposed in and maintained by an outer frame. Therefore, the outer frame supporting -the guide board, first lattice boards and second lattice boards may be designed so that i-t can be mounted on a substrate on which the foregoing pins are set upright Each portion between adjacent second kerns of each second lattice board is defined as a driving segment, -the side edges of which are positioned so as to push the ground pin contact springs against the ground pins. Each of the second lattice boards is held by the outer frame retractable with respect to the guide board. In assembling under the state that the second lattice boards are spaced from the guide board, the outer frame is attached to the substrate, each ground pin is inserted between the corresponding ground pin springy segments, thereafter the second lattice boards are shifted toward the substrate, whereby the ground pin springs are put in sufficient press contact with the ground pins by means of the driving s egr~lent s .
BRIEF DESCRIPTION OF THE DRUNKS
Fig. 1 is a perspective view showing a substrate, ground pins and signal pins;
Fig. 2 is a plan view corresponding to Fig. 1;
Fig. 3 is a plan view showing part of a guide board 14 through which -the ground pins and signal pins pasts;
Fig. 4 is a plan view showing part of lattice boards 21(s), 36(p) arranged on the guide board;
Fig. 5 is a cross sectional view -taken along line Lo 3 V-V in Fig. 4;
Fake. 6 is a cross sectional view taken along line VI VI in Fig. 4;
Fig, 7 is a cross sectional view taken along line VII-VII in Fig. 4;
Fig. 8 is a cross sectional view identical to Fig. 5, except that the lattice boards 36~p) are spaced a little from the guide board 14;
Fly. 9 is a cross sectional view taken along line IX-IX in Fig. 4;
Fig. 10 is a perspective view showing part of the lightweights boards 21(s), 36(p) arranged on the guide board 14;
Fig. 11 is an exploded perspective view showing the relation between the lattice boards 21(s), 36(p) and an outer frame 41;
Fig. 12 is a perspective view showing the guide board 14 and lattice boards 21(s), 36(p) assembled in the outer frame 41; and Fig. 13 is a perspective view corresponding to Fig. 12, except that the substrate 11 is attached to and an indication board 75 is spaced from the unit.
DESCRIPTION OF TIE PREFERRED EMBODI~IEN'r Embodiment of the present invention will now be described with reference to the drawings.
As sown in Fig. 1, a large number of ground pins 12(1,1) through 12(n,n) and signal pins 13(1,1) through Nina) are set upright on an insulclting substrate 11~
As shown in Fig. 11, metallic lattice boards 21(1) through 21(n) are arranged side by side at a regular interval and other metallic lattice hoards 36(1) through 36(n~ are also arranged stale by side at a regular interval arid disposed so as to cross orthogonally the former lattice boards 21(1) through 21(n). As shown in Fig 13, by these lattice boards 21(1) through 21(n) and 36(1) -through 36(n) a matrix pattern composed of square holes I for insertion OX coaxial contacts is formed. These lattice boards 21(1) through 21(n) and 36(1) through 36(n) are surrounded and maintained by side frames 41-1 through 42-2, these lattice boards and side frames are mounted on the substrate 11 shown in Fig.
1, and each signal pin is located inside each coaxial contact insertion hole 61.
As shown in Figs. 1 and 2, the substrate 11 made of insulator, such as synthetic resin, is shaped substantially square. On -the substrate 11 the ground pins 12(1,1) through 12(n,n) are arranged in a square matrix pattern and set upright. At about the center of each unit square area enclosed by adjacent rows and adjacent calms of the ground pins of the matrix pattern, each signal pin 13(1,1) through 13(n-1,n-1) is set upright on the substrate 11. Although not shown, on the substrate 11 a signal processing circuit will be provided, for example, whose ground lines will be connected to the respective ground pins 12(1,1) through 12(n~n) and whose input/output terminals will be connected to respective signal pins 13(1,1) through 13(n-1,n-1)~ or, pins and/or sockets (also not shown) will be provided on the opposite side of the substrate 11 to the signal pins 13(1,1) through 13(n-1/n--l) and connected to those signal pins, which in turn will be connected -through connecting means to LSI elements, for example.
The illustrated embodiment includes a guide board 14 interposed between the substrate 11 and the lattice boards 21(s) (s = 1, 2, ..., n) and up (p = 1, 2, ..., n).
3~L~03 As shown partially in Fig. 3, in this guide board 14 there are bored ground pin thrills 15(1,1) through 15(n,n) through which the ground pins 12(1,1) through 12(n,n) pass respectively and signal pin thrills 16(1,1) through 16(n-1,n-1) through which the signal pins 13(1,1) through 13(n-1,n-1) pass respectively. As shown partially in Figs. 5 and 6, the inner periphery of each of the ground pin thrills 15(1,1) through 15(n,n) and signal pin thrills 16(1,1) through 16(n-1,n-1) is tapered and enlarged as approaching the substrate 11 so that the ground pins 12(1,1) through 12(nrn) and signal pins 13(1,1) through 13(n-1,n-1) can pass smoothly through the thrills.
As shown in Fig. 10, the lattice boards 21(s) of the embodiment are designed so that each board is composed of two conductive plates aye, 21b(s) joined back to back. The lattice board 21(s) is shaped substantially rectangular in appearance and formed with kerns 23~p,s) extending from the front edge (upper edge in Fig. 10) toward the guide board I mutually puerilely at a regular interval On the extended lines of the kerns 23(p,s) (p = 1, 2, ... n) the ground pin thrills 15(p,s) are located.
In the rear edge of the lattice board 21(s) on the side of the guide board 14 contact springs Jo (pus) for the ground pins are Loomed which come into elastic contact with the ground pins 12(p,s). Specifically, as shown in Figs. 7 and 10, notches 63 are formed in the rear edge of the lattice board 21(s) on the side of the guide board 14 so as to oppose to both sides of each ground pin thrill 15(p,s). Spacing between adjacent notches 63 is uniform, whereby each grourld pin contact spring 24(p,s) is provided opposite to the corresponding ground pin thrill spouse).
Each ground pin contact spring ups is made integrally go 33 with the conductive plates aye, 21b(s) and composed of mutually opposing spring segments apse 2~b(p,s).
Specifically, as shown in Figs. 5 and 10, the spring segments apse), 24b(p,s) separate gradually from each other as approaching the guide board 14, then come close together abruptly, and separate gradually again. The ground pin 12(p,s) is elastically clamped between the approached or closed portions of the spring segments. The free ends of -the spring segments apse), 24b(p,s) are spaced from each other so that the ground pin 12(p,s) can fit easily between the spring segments.
In the embodiment, each portion between adjacent ground pin contact springs 24(p,s) and 24(p~1,s) is defined as a coaxial ground spring 30(p,s). Each coaxial ground spring 30(p,s) is composed of spring segments apse), 30b(p,s) which are extensions of the conductive plates aye, 21b(s). As shown in Figs. 6 and 10, the midway portions in the lengthwise direction of the sprint segments apse), 30b(p,s) are spaced from each other and forming coupling projections aye, 64b which are located respectively on one side each of adjacent coaxial contact insertion holes 61.
On -the free ends of the spring segments apse), 30b(p,s) narrow portions aye, 22b are formed projectingly which are inserted in a coupling hole 25(p,s) bored in -the guide board 14 between adjacent signal pin thrills 16(p,s-1) and 16(p,s) so that the coaxial ground spring 30(p,s) is positioned rightly. For clear understanding of the structure one of the coaxial ground springs 30(p,s) is cut off in Fig. 10.
In the embodiment, the lattice boards 36(p) intersect orthogonally the lattice boards 21(s) such that in the rear edges of the lattice boards 36(p) on the side 1;~3~3 g of the guide board 14 kerns 35(p,s) are formed core-spondingly to the ground pin thrills 15(p,s), the rear edge portions of the lattice boards 36(p) are fitted and coupled in the kerns priest and the front edge portions of the lattice boards 21(s) are fit-ted and coupled in the kerns 35(p,s). In this mutually fitted and coupled state the inner ends of the kerns 23(p,s) coincide with the inner ends of the kerns 35(p,s) in level.
The open end portion of each of the kerns 35(p,s) formed in the lattice boards 36tp) on the side of the guide board 14 is enlarged widths to form a substantially rectangular notch 38(p,s).
in order to get a good contacted relation when the ground pins 12(p,s) are inserted so as to come into contact with the ground pin contact springs 24(p,s), a sufficient frictional force is desirable between -them However, as the number of the ground pins increases the total force of friction becomes too large Therefore, in the embodiment, the ground pins 12(p,s) are inserted and positioned between the spring segments apse and 24b(p,s) before fully inserting the lattice boards 36(p) as shown in Fig. 8 so that substantially no pressure is needed for insertion of the pins 12(p,s), and thereafter the spring segments apse), 24b(prs~ are then forced to be pushed elastically against the ground pins 12(p,s) by fully inserting the lattice boards 36~p) which are made retractable with respect to the guide board 14. That is to say, when the lattice boards 36(p) are spaced prom the guide board 14 more than a given distance as shown in Fig.
8, the ground pin spring segments apse), 24b(p,s) are separated prom the ground pins 12(p,s) or slightly in contact therewith. Accordingly in the state where the lattice boards 21(s) alone are located at ultimately L4~3 expected positions with respect to the guide board 14, each ground pin 12(p,s) can be inserted and positioned between the spring segments apse), 24b(p,s) with no insertion force.
Portions of each lattice board 36(p) between adjacent notches 38(p,s) and 38(p,s~1) are defined as driving segments 65, and the gap do between the free ends of spring segments 24b(p,s) and apse) opposite to the edges of each driving segment 65 is made, in the position shown in Fig. 8, narrower than the width we of the driving segment 65. Accordingly, as the lattice boards 36(p) are shifted close to the guide board 14 to a given extent, the gap between the spring segments 24b(p,s) and apse) on both sides of the driving segment 65 is widened by the driving segment 65, as shown in Fig 5 r whereby the ground pins 12(p,s) are clamped elastically by the pairs of spring segments apse), 24b(p,s) and a good contacted state is obtained there between. By shifting the lattice boards 36(p) one after another or several at a time from the position shown in Fig. 8 to the position shown in Fig. 5 etch ground pin 12(p,s) can be put in good contact with the ground pin contact spring without requiring a large force.
As guide means which become effective when the lattice boards 36(p) are fitted in and shifted relatively with respect to the lattice boards 21ts), substantially hemispherical projections aye, 66b are formed in opposing relation to each other on both sides of the lattice boards 21(s) as shown in Figs. 6 and 10 through pressing, which are located in a midway position between -the kerns 23(p/s) and the round pin contact springs 24(p,s) of the lattice boards 21(s) so as to guide the lattice boards 36(p) there between.
As shown in Fix. 11, the lattice boards [33 21(s), 36(p), and guide board 14 are surrounded by side frames 41-1, 41-2, 42-1, 42-2 (the latter two, 42-1, 42-~, are shown in Fig. 12) of the outer frame 41 and supported thereby.
In the inner surfaces of the side frames 41-1, 41-2 concave portions 43-1, 43-2 (43-2 not shown) are formed extending longitudinally, and below and along the concave portions 43-1, 43-2 fixing grooves 44-1, 44-2 (44-2 not shown) are formed in which the marginal edge portions of the guide board 14 are inserted. In inner upper edge portions of the side frames 41-1, 41-2 kerns 45(p) (p =
1, 2, ... n) are formed to reach the concave portions 43-1, 43-2, and the end portions of the lattice boars 36(p) are inserted in the kerns 45(p~.
The side frames 42-1, 42-2 are to be mounted orthogonally to the side frames 41-1, 41-2. Similarly, there are formed concave portions 46~1, 46-2, fixing grooves 47-1, 47-2, and kerns 48(s) us = 1, 2, ... n) in which the end portions of the lattice boards 21(s) are inserted.
On either end of each of -the lattice boards 21(s~
and 36(p) projection segments 71~ 72, 73, 74 (74 not shown are formed which are inserted and coupled in the concave portions 43-1, 43-2, 46-1, 46-2, respectively, In assembling, the peripheral portion of the guide board 14 is inserted in the fixing grooves 44-1, 44-2, 47-1, 47-2, the projection segments 71, 72, 73, 74 are inserted respectively in the concave portions 43-1, 43-2, 46-1, 46-2 so that the side frames 41-1, 41-2, 42-1, 42-2 are attached to the periphery of the lattice boards 36(p) and lattice boards 21(s) as shown in Fig, 12, and adjacent ones of the side frames 41-1, 41-2, 42-1 and 42-2 are secured together at the ends by screws 49-1 through 49-4 (49-3 not shown), thereby resulting in the assembled outer frame 41 consisting 3~L~03 of side frames aye 41-2, 42-1, 42-2. At this stage, the lattice boards 36(p) are assembled; but spaced a little from the guide board 14 as shown in Fig 8. The guide board 14 is then pushed against the substrate 11 to stake the narrow portions aye, 22b of the coaxial ground springs 30(p,s) into the corresponding coupling holes 25(p,s).
Then, the substrate 11 is mounted on the guide board 14 so that the ground pins and signal pins pass through the thrills of the guide board 14 thereby positioning the ground pins in between the corresponding spring segments Thereafter, the lattice boards 36(p) are pushed in completely one after another or several at a time as shown in Fig. 13, thereby resulting in the position shown in Fig. 5.
When necessary, an indication board 75 is disposed so as to cover the upper side of the unit and secured to the substrate 11 and outer frame 41 together. In the indication board 75 thrills 50(1,1) through 50(n-1,n-1) are Bud at positions corresponding to the signal pins 13(1,1) through 13(n-1,n-1). If addresses indicating the coaxial contacts to be inserted are presented in connection with the thrills 50(1,1) through 50(n-1,n-1), these indicated addresses are convenient for connection work.
For indication, different colors may be used for different groups of signals, for example In case the number of the ground pins is as much as one thousand, far example, the substrate 11 and outer frame 41 can be secured and maintained mutually only by the frictional force existing between the ground pins and ground pin spring segments If necessary, appropriate locking means may be used; for example, bolts are inserted -through the outer frame 41 and substrate 11 and secured by nuts to clamp -them.
In the assembled state, as a coaxial contact 32 is inserted in one thrill, for example, 50(2,s), as shown in Figs. 4 and 6, the coaxial ground spring segments 30b(p~s) and apse) are elastically deformed by an outer conductor on tune periphery of the coaxial contact 32 and come into mutual contact therewith. A center conductor (not shown) of the coaxial contact 32 is made in the form of a female contact; thus, as the signal pin 13(p,s) is inserted in -this female contact, they come in-to elastic contact with each other. At this step, each coupling projections 64b, aye of the coaxial ground spring segments 30b(p,s), apse) are fitted in and coupled elastically with a ring-shaped coupling recess formed on the periphery at the end portion of the coaxial contact 32, whereby an lo operator can feel the click reaction of insertion ox the coaxial contact 32 and this contacted state is maintained.
As is apparent from the foregoing, the coaxial multi core receptacle according to the present invention has a comparatively simple structure and can easily be attached and assembled to the substrate on which the signal pins and ground pins are set upright. In the assembled state, the outer conductors of the coaxial contacts being connected to a nurser of signal pins set upright on the substrate are surrounded by the lattice boards 21(s), 36(p) and connected to and kept in contact with the coaxial ground springs, and each connected section is electrically shielded sufficiently from others.
Accordingly, in the present invention, the signal pins can be located mutually closely, the present receptacle can be fabricated in -the form ox a small-si~ed unit even though a large number of signal pins are to be included, and can be produced at low costs in comparison to the conventional receptacle using the coaxial connectors ~31~03 Further, even if a large number of ground pins are included in the unit, the ground pins and ground pin springs can be put in contact with each other under sufficient pressure by pushing in a little the lattice boards 36~p) one after another or several at a time after assembled.
Claims (19)
1. A coaxial multicore receptacle comprising a substrate made of insulating material, a plurality of ground pins set upright and arranged in a matrix pattern on said substrate, a plurality of signal pins set upright on the same side of said substrate as that of said ground pins, each of which is located at about the center of a unit square area surrounded by adjacent rows and adjacent columns of said matrix pattern arrangement, a plurality of first metallic lattice boards provided in parallel to one another at equal intervals substantially perpendicularly to said substrate, each being positioned correspondingly to and above each column of said ground pins, a plurality of second metallic lattice boards provided in parallel to one another at equal intervals substantially perpendicularly to said substrate and crossing substantially orthogonally said first lattice boards, each being positioned correspondingly to and above each row of said ground pins, coaxial contact insertion holes defined and surrounded by said second lattice boards and said first lattice boards, which correspond one-to-one to said signal pins, and ground pin contact springs extending from said first lattice boards toward said substrate correspondingly to said ground pins, each of which is in elastic contact with the corresponding ground pin.
2. A coaxial multicore receptacle as set forth in claim 1, wherein each of said first lattice boards is formed integrally with coaxial ground springs extending toward said substrate between adjacent ones of said ground pin contact springs, each of said coaxial ground springs coming into elastic contact with an outer conductor of a coaxial contact being inserted in the corresponding coaxial contact insertion hole.
3 A coaxial multicore receptacle as set forth in claim 2, wherein each of said first lattice boards is composed of two metallic plates joined back to back, each of said ground pin contact springs is made in the form of a pair of spring segments integrally with the two metallic plates of said first lattice board, and by said pair of spring segments the corresponding ground pin is elastically clamped.
4. A coaxial multicore receptacle as set forth in claim 3, wherein each of said coaxial ground springs is made in the form of a pair of spring segments integrally with the two metallic plates of said first lattice board, and the paired spring segments are separated from each other and projecting into the adjacent coaxial contact insertion holes.
5. A coaxial multicore receptacle as set forth in claim 2, wherein each of said first lattice boards is formed with first kerfs extending from a front edge opposite from said substrate toward said substrate along a line passing through each of said ground pin contact springs, each of said second lattice boards is formed with second kerfs extending from the rear edge on the side of said substrate in the direction of departing from said substrate on the position of each of said ground pins arranged in a row, portions of said second lattice boards opposite from said substrate are inserted and coupled in said first kerfs, and portions of said first lattice boards on the side of said substrate are inserted and coupled in said second kerfs.
6. A coaxial multicore receptacle as set forth in claim 5, wherein each of said first lattice boards is formed integrally with pairs of projections in a position between said first kerfs and said ground pin contact springs, which hold the corresponding second lattice board therebetween.
7. A coaxial multicore receptacle as set forth in claim 3, wherein each of said second lattice boards is formed integrally with driving segments extending toward said substrate between adjacent ones of said ground pins arranged in a row, the paired spring segments of each of said ground pin contact springs are formed with projections separated from each other, said projections are elastically pushed by edges of said driving segments, and said projections and said driving segments are designed so that in the state where said first lattice boards and said second lattice boards are assembled mutually, except for said second lattice boards being displaced a little away from said substrate, a pushing force of said driving segments against said spring segment is weak or disappears.
8. A coaxial multicore receptacle as set forth in claim 4, including further a guide board made of insulating material positioned opposite to said substrate and formed with thru-holes arranged in rows and columns through which said ground pins and said signal pins pass.
9. A coaxial multicore receptacle as set forth in claim 8, wherein each of said first lattice boards, each of said second lattice boards, and said guide board are disposed in and held by an outer frame made of insulating material.
10. A coaxial multicore receptacle as set forth in claim 9, wherein the end portion each of said coaxial ground springs is inserted in a corresponding coupling hole bored in said guide board
11. A coaxial multicore receptacle as set forth in claim 9, wherein each of said thru-holes of said guide board is tapered so that its diameter in portions on the side of said substrate becomes larger as approaching said substrate.
12. A coaxial multicore receptacle comprising first metallic lattice boards disposed side by side at a substantially regular interval, second metallic lattice boards disposed side by side at a substantially regular interval, crossing substantially orthogonally said first lattice boards, and defining together with said first lattice boards coaxial contact insertion holes of a square shape arranged in a matrix pattern in which coaxial contacts are to be inserted, ground pin contact springs formed integrally at one edge of each of said first lattice boards on the crossing positions between said first lattice boards and said second lattice boards, a guide board made of insulating material, provided close to and opposite to the free ends of said ground pin contact springs, bored with around pin thru-holes opposite to the crossing points between said first lattice boards and said second lattice boards and arranged in a matrix pattern, and bored with signal pin thru-holes located each at about the center of each of unit square areas surrounded by adjacent rows and adjacent columns of said ground pin thru-holes arranged in the matrix pattern, and an outer frame made of insulating material for holding therein said first lattice boards, said second lattice boards and said guide board.
13. A coaxial multicore receptacle as set forth in claim 12, wherein each of said first lattice boards is composed of two metallic plates joined back to back, each of said ground pin contact springs is made in the form of a pair of mutually opposing spring segments integrally with the two metallic plates of said first lattice board, and the free ends of said paired spring segments are separated from each other to define a gap opposing the corresponding ground pin thru-hole.
14. A coaxial multicore receptacle as set forth in claim 13, wherein each portion between adjacent ground pin contact springs of said first lattice board defines a coaxial ground spring, each of said coaxial ground springs is made in the form of a pair of spring segments integrally with said two metallic plates, and said paired spring segments are separated from each other and projecting into the adjacent coaxial contact insertion holes.
15. A coaxial multicore receptacle as set forth in claim 14, wherein the free end portions of said paired spring segments of said coaxial ground spring are close to each other and inserted in a corresponding common coupling hole bored in said guide board thereby to be positioned.
16. A coaxial multicore receptacle as set forth in claim 14, wherein each of said first lattice boards is formed with first kerfs extending from the edge opposite from said guide board toward said guide board along a line passing through each of said ground pin contact springs, each of said second lattice boards is formed with second kerfs opposite the corresponding ground pin thru-holes which extends from the edge on the side of said guide board in the direction of departing from said guide board, portions of said second lattice boards opposite from said guide board are inserted and coupled in said first kerfs, and portions of said first lattice boards on the side of said guide board are inserted and coupled in said second kerfs.
17. A coaxial multicore receptacle as set forth in claim 16, wherein each end portion between adjacent kerfs of said second lattice board defines a driving segment, the side edges of said driving segment being in elastic contact with adjacent ones of said ground pin contact springs.
18. A coaxial multicore receptacle as set forth in claim 17, wherein said second lattice boards are held in said outer frame retractably with respect to said guide board, and the configurations of said driving segments and said ground pin contact springs are designed so that the strength of elastic contact between said driving segment and said ground pin contact springs is smaller in the state where said second lattice boards are spaced a little from said guide board from the normal position than that obtained in the normal position.
19. A coaxial multicore receptacle as set forth in claim 16, including further an indication board bored with holes corresponding one-to-one to said coaxial connector insertion holes, said indication board being mounted to said outer frame on the side opposite to said guide board and bearing numerals and/or symbols for designation in connection with said holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000486447A CA1231403A (en) | 1985-07-08 | 1985-07-08 | Coaxial multicore receptacle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000486447A CA1231403A (en) | 1985-07-08 | 1985-07-08 | Coaxial multicore receptacle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1231403A true CA1231403A (en) | 1988-01-12 |
Family
ID=4130944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000486447A Expired CA1231403A (en) | 1985-07-08 | 1985-07-08 | Coaxial multicore receptacle |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1231403A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5055068A (en) * | 1989-08-22 | 1991-10-08 | Phoenix Company Of Chicago, Inc. | Stamped and formed coaxial connectors having insert-molded center conductors |
-
1985
- 1985-07-08 CA CA000486447A patent/CA1231403A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5055068A (en) * | 1989-08-22 | 1991-10-08 | Phoenix Company Of Chicago, Inc. | Stamped and formed coaxial connectors having insert-molded center conductors |
| US5060373A (en) * | 1989-08-22 | 1991-10-29 | The Phoenix Company Of Chicago, Inc. | Methods for making coaxial connectors |
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