JP5943788B2 - Card edge type coaxial connector - Google Patents

Description

  The present invention relates to an electrical connector, and more particularly to a connector for connecting a coaxial cable and a printed circuit board (herein referred to as a “card edge type coaxial connector”).

  An example of this type of connector is disclosed in Patent Document 1. The technique disclosed in Patent Document 1 will be briefly described with reference to FIGS. 12 and 13.

  In FIG. 12, a plug connector 2 is connected to the coaxial cable 1. The plug connector 2 includes a conductive shell 4 integrally provided with a ground contact 3 and a signal contact 5 insulated from the conductive shell 4. The ground contact 3 and the signal contact 5 are formed so as to be fitted to the edge portion 6 a of the printed circuit board 6.

  The conductive shell 4 is formed so as to have a shell body 4a and a shell lid 4b as shown in FIG. In order to connect the coaxial cable 1 to the plug connector 2, first, the coaxial cable 1 is routed to the shell body 4a. Specifically, the outer conductor 1 a of the coaxial cable 1 is brought into contact with the conductive shell 4, and the central conductor 1 b of the coaxial cable 1 is brought into contact with the signal contact 5. In this state, the shell lid portion 4b is bent with respect to the shell main body portion 4a and pressed against the coaxial cable 1. Finally, the coaxial cable 1 is held between the shell main body 4a and the shell lid 4b.

  As a result, the direction 7 in which the coaxial cable 1 is pulled out from the plug connector 2 is a direction perpendicular to the fitting direction 8 in which the plug connector 2 is fitted to the edge portion 6a of the printed circuit board 6 (hereinafter also referred to as “lateral direction”). There are things).

JP 2011-171129 A

  As described above, in the technique disclosed in Patent Document 1, since the coaxial cable is pulled out from the plug connector in the lateral direction, the symmetry of the entire transmission line is not structurally maintained. That is, the transmission path is bent at a right angle. This adversely affects high-speed transmission characteristics because the impedance of the transmission line is discontinuously changed. Furthermore, it is difficult to realize so-called multipolarization with a plurality of coaxial cables.

  Moreover, since the ground contact fitted to the printed circuit board is formed as a part of the shell, the displacement amount is large and the displacement direction tends to vary. Therefore, particularly in the case of multipolarization, a problem occurs in contact stability, and it is difficult to improve the contact stability.

  Therefore, an object of the present invention is to provide a card edge type coaxial connector that can solve the above-mentioned problems.

According to one aspect of the present invention, in a card edge type coaxial connector including a cable connection portion connected to a coaxial cable and a board connection portion connected to a printed circuit board, the card edge type coaxial connector includes an insulating housing, and the cable connection portion includes: A metal shell, an insulator held in the metal shell, and a socket contact held in the insulator, wherein the board connection portion is attached at one end to the socket contact so as to be aligned with the socket contact And a pair of elastic ground contacts disposed on both sides of the signal contact and having one end attached to the metal shell, wherein the signal contact and the ground contact are the insulating housing. In the above signa Contacts and the other end of each of said ground contacts, by being hooked on the insulating housing, are held in a state of Ko' the elastic, the insulating housing consists of two split parts having the same shape, the A card edge type coaxial connector is obtained in which the cable connection portion and the substrate connection portion are arranged between two split parts .

According to another aspect of the present invention, it includes a connector element and an insulating housing that accommodates the connector element, the connector element being connected to a coaxial cable and a board connected to a printed circuit board. The cable connection portion includes a metal shell, an insulator held in the metal shell, and a socket contact held in the insulator, and the board connection portion includes the socket contact An elastic signal contact having one end attached to the socket contact so as to be aligned, and a pair of ground contacts having elasticity arranged on both sides of the signal contact and having one end attached to the metal shell. Each including the signal contact and the ground contact , By being hooked on the insulating housing, are held in a state of Ko' the elastic, the insulating housing consists of two split parts having the same shape, the cable connection between the two split parts A card edge type coaxial connector is obtained in which the board and the board connecting part are arranged .

  The card edge type coaxial connector according to the present invention is excellent in high-speed transmission characteristics, so that so-called multipolarization can be easily realized, and contact stability can be improved.

1 is an external perspective view of a card edge type coaxial connector according to an embodiment of the present invention. The disassembled perspective view of the card edge type | mold coaxial connector of FIG. The disassembled perspective view of the connector element contained in the card edge type | mold coaxial connector of FIG.1 and FIG.2. The longitudinal cross-sectional view of the card edge type | mold coaxial connector of FIG. The enlarged view of only the A section of FIG. The perspective view which shows the state before connecting a printed circuit board to the card edge type | mold coaxial connector of FIG. The perspective view which shows the state which connected the printed circuit board to the card edge type | mold coaxial connector of FIG. The front view in the state of FIG. Sectional drawing obtained along the IX-IX line of FIG. Sectional drawing obtained along the XX line of FIG. The perspective view similar to FIG. 6 which shows the card edge type | mold coaxial connector which concerns on other embodiment of this invention with the printed circuit board which can be connected to it. The external appearance perspective view which shows the plug connector currently disclosed by patent document 1 (Unexamined-Japanese-Patent No. 2011-171129) with a printed circuit board. The perspective view which shows the plug connector shown in FIG. 12 in the state before the connection of a coaxial cable.

  Referring to FIGS. 1 and 2, a card edge type coaxial connector 10 according to an embodiment of the present invention is a connector for connecting a coaxial cable (not shown) and a printed board (not shown). 11 and an insulating housing 12 constituting an outer shell that houses the connector element 11. The connector element 11 includes a cable connection portion 11a in which a coaxial cable is connected to one end in the first direction A1, and a board connection portion that extends from the other end in the first direction A1 of the cable connection portion 11a and is connected to the printed circuit board. 11b.

  The connector element 11 will be described with reference to FIG. 3 together with FIG.

  The cable connecting portion 11 a of the connector element 11 includes a metal shell 21, an insulator 22 held in the metal shell 21, and a conductive socket contact 23 held in the insulator 22.

  The metal shell 21 includes a main body portion 21a, a cylindrical portion 21b protruding from the main body portion 21a in the first direction A1, a through hole 21c having a circular cross section extending in the first direction A1 and continuing to the inside of the cylindrical portion 21b, It has a pair of press-fitting grooves 21d formed on the end surface of the main body portion 21a opposite to the cylindrical portion 21b. The cylinder part 21b is a part for connecting the outer conductor of the coaxial cable.

  The insulator 22 is a cylindrical part that is fitted and fixed in the through hole 21c. A small hole 22 a penetrating in the axial direction is formed at the center of the insulator 22. Of course, the insulator 22 is made of an electrical insulator.

  The socket contact 23 is held in the small hole 22a of the insulator 22 by press fitting. One end portion 23a of the socket contact 23 is located inside the cylindrical portion 21b of the metal shell 21, and is connected in a straight line with the central conductor of the coaxial cable (or coaxial connector).

  After assembling each part to the metal shell 21, the opening on the upper surface of the main body 21a is closed with a metal cap plate 21e. Thus, in the cable connection portion 11a in which the insulator 22 and the socket contact 23 are assembled to the metal shell 21, the transmission line substantially coaxial with the socket contact 23 extending in the first direction A1 and the metal shell 21 around the socket contact 23 is provided. Is formed. Therefore, the cable connection part 11a can also be called a coaxial part.

  On the other hand, the board connecting portion 11b of the connector element 11 includes a conductive signal contact 33 having elasticity substantially extending in the first direction A1, and a signal contact 33 in the second direction A2 orthogonal to the first direction A1. And a pair of conductive ground contacts 34 having elasticity substantially extending in the first direction A1. As a result, three transmission lines are formed in parallel in the board connecting portion 11b. Therefore, the board connection part 11b can also be called a parallel part.

  The signal contact 33 includes two spring portions 33a and 33b having the same shape and symmetrical to each other in the third direction A3 orthogonal to the first direction A1 and the second direction A2. One end 33c of the signal contact 33 is fixed to the other end 23b of the socket contact 23 by press fitting. Claws 33d and 33e are formed at the other end of the signal contact 33, that is, the free end.

  Thus, since the signal contact 33 having two symmetrical spring portions 33a and 33b is press-fitted into the socket contact 23 that is connected to the coaxial cable or the coaxial connector in a straight line, the central transmission line is formed. The overall symmetry is good and the high-speed transmission characteristics are not adversely affected.

  Each of the pair of ground contacts 34 also has two spring portions 34a and 34b having the same shape and symmetrical with each other in the third direction A3. The pair of ground contacts 34 is fixed to the pair of press-fit grooves 21d of the metal shell 21 by press-fitting one end 34c. Claws 34d and 34e are formed at the other end, that is, the free end of each of the pair of ground contacts 34.

  Returning to FIG. 1 and FIG. 2, the description will be continued.

  The insulating housing 12 is configured by overlapping two split parts 12a and 12b. The two split parts 12a and 12b are parts having the same shape and being symmetrical with respect to each other made of an electrically insulating material such as plastic. The connector element 11 is disposed and fixed so as to be sandwiched between the two split parts 12a and 12b.

  On each of the overlapping surfaces of the two split parts 12a and 12b, a recess 41 for receiving the cable connecting portion 11a, a groove portion 42 for receiving the spring portions 33a and 33b of the signal contact 33, and a spring portion of the pair of ground contacts 34 are provided. A pair of groove portions 43 for receiving 34a and 34b are formed. Protrusions 42 a and 42 b are formed at the ends of the groove 42, and protrusions 43 a and 43 b are formed at the ends of each pair of grooves 43. A board insertion hole 44 for inserting a printed board is formed at the boundary between the two split parts 12a and 12b.

  The internal structure of the card edge type coaxial connector 10 will be described with reference to FIGS. 4 and 5 in addition to FIGS.

  When assembling the card edge type coaxial connector 10, the hooks 33 d and 34 d are hooked on the protrusions 42 a and 43 a of one split part 12 a, and the claws 33 e and 34 e are hooked on the protrusions 42 b and 43 b of the other split part 12 b, 11 is inserted between the split parts 12a and 12b. After that, the insulating housing 12 is configured by firmly joining the split parts 12a and 12b. Thus, the cost can be reduced because the assembly is easy.

  In the assembled card edge type coaxial connector 10, the claws 33 d and 33 e of the signal contact 33 are hooked on the protrusions 42 a and 42 b of the insulating housing 12, respectively. In this state, the signal contact 33 is held in a state of resisting its elasticity. Thus, the signal contact 33 is given a preload (preload) in the direction indicated by the arrows 46a and 46b in the third direction A3.

  Although not shown in FIGS. 4 and 5, the claws 34 d and 34 e of the ground contact 34 are also hooked on the protrusions 42 a and 42 b of the insulating housing 12 with the same structure as that of the signal contact 33. Therefore, the ground contact 34 is also held in a state of resisting the elasticity, and is preloaded in the direction indicated by the arrows 46a and 46b.

  The card edge type coaxial connector 10 described above can be fitted to an edge portion 51a of a printed circuit board 51 as shown in FIG. That is, when the edge portion 51 a of the printed board 51 is inserted into the board insertion hole 44 and the state shown in FIG. 7 is obtained, the edge portion 51 a of the printed board 51 contacts the signal contact 33 and the ground contact 34. Specifically, as shown in FIGS. 8 to 10, each of the signal contact 33 and the ground contact 34 sandwiches the edge portion 51 a of the printed circuit board 51 in the plate thickness direction. In this way, the printed circuit board 51 can be connected to the card edge type coaxial connector 10.

  The signal contact 33 and the ground contact 34 are preloaded by hooking the ends of the signal contact 33 and the ground contact 34 to the insulative housing 12, and the contact to be closed is forcibly widened. Therefore, the displacement amount of the contact is small, and the variation in the displacement direction is small. Since there are few, contact stability is good.

  The connection of the coaxial cable or the coaxial connector to the card edge type coaxial connector 10 can be easily performed using the cylindrical portion 21b of the metal shell 21.

  Referring to FIG. 11, a card edge type coaxial connector 60 according to another embodiment of the present invention has a plurality of connector elements 11 accommodated in parallel in an insulating housing 12 constituting an outer shell. In other words, two combinations of the cable connection part and the board connection part are arranged in parallel at positions corresponding to the two board insertion holes 44 of the insulating housing 12 respectively. As a result, the card edge type coaxial connector 60 has a two-pole structure. Therefore, the two edge portions 61a of the printed board 61 can be inserted into the two board insertion holes 44, respectively, and two-pole connection can be obtained at the same time. In this case, since the coaxial cable or the coaxial connector connected to the card edge type coaxial connector 10 is arranged in a straight line, multipolarization is easy.

  Of course, a card edge type coaxial connector having a multi-pole structure in which three or more combinations of cable connection portions and board connection portions are arranged in one insulating housing 12 can be formed.

  The present invention is not limited to the above-described embodiment, and a part or all of the present invention can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
In a card edge type coaxial connector provided with a cable connection part 11a connected to a coaxial cable and a board connection part 11b connected to a printed circuit board,
An insulating housing 12;
The cable connecting portion includes a metal shell 21, an insulator 22 held in the metal shell, and a socket contact 23 held in the insulator.
The board connecting portions are elastic signal contacts 33 having one ends attached to the socket contacts so as to be aligned with the socket contacts, and are respectively disposed on both sides of the signal contacts and have one ends attached to the metal shell. A pair of ground contacts 34 having a defined elasticity;
The signal contact and the ground contact are housed in the insulating housing,
The other end of each of the signal contact and the ground contact is held against the elasticity by being hooked on the insulating housing.
A card edge type coaxial connector 10.

(Appendix 2)
Each of the signal contact and the pair of ground contacts has two spring portions 33a, 33b, 34a, and 34b having the same shape for sandwiching the printed circuit board in the plate thickness direction, and the socket contact and the signal contact are the first ones. The signal contact and the ground contact are arranged in a second direction A2 orthogonal to the first direction, and the two spring portions are arranged in the first direction and the first direction. The card edge type coaxial connector according to appendix 1, wherein the card edge type coaxial connectors face each other in a third direction A3 orthogonal to the direction of 2.

(Appendix 3)
The card edge type coaxial connector according to appendix 1, wherein the signal contact includes two spring portions 33a and 33b having the same shape for sandwiching the printed board in a plate thickness direction.

(Appendix 4)
4. The card edge type coaxial connector according to appendix 1 or 3, wherein each of the pair of ground contacts includes two spring portions 34a and 34b having the same shape for sandwiching the printed circuit board in a plate thickness direction.

(Appendix 5)
The card edge type coaxial connector according to any one of appendices 1 to 4, wherein the signal contact is attached to the socket contact by press-fitting.

(Appendix 6)
6. The card edge type coaxial connector according to claim 1, wherein each of the pair of ground contacts is attached to the metal shell by press-fitting.

(Appendix 7)
The insulating housing includes two split parts 12a and 12b having the same shape, and the cable connection part and the board connection part are disposed between the two split parts. The card edge type coaxial connector according to item.

(Appendix 8)
The card edge type coaxial connector 60 according to any one of appendices 1 to 7, wherein a plurality of combinations of the cable connection portion and the board connection portion are arranged to form a multipolar structure.

(Appendix 9)
A connector element 11 and an insulating housing 12 containing the connector element;
The connector element includes a cable connection portion 11a connected to a coaxial cable, and a board connection portion 11b connected to a printed board.
The cable connecting portion includes a metal shell 21, an insulator 22 held in the metal shell, and a socket contact 23 held in the insulator.
The board connecting portion is provided with elastic signal contacts 33 having one ends attached to the socket contacts so as to be aligned with the socket contacts, and arranged at both sides of the signal contacts and attached to the metal shells at one ends. A pair of ground contacts 34 having elastic properties,
The other end of each of the signal contact and the ground contact is held against the elasticity by being hooked on the insulating housing.
A card edge type coaxial connector.

DESCRIPTION OF SYMBOLS 1 Coaxial cable 1a Outer conductor 1b Center conductor 2 Plug connector 3 Ground contact 4 Conductive shell 4a Shell main body part 4b Shell cover part 5 Signal contact 6 Printed circuit board 6a Edge part 7 Direction 8 Fitting direction 10 Card edge type coaxial connector 11 Connector Element 11a Cable connection portion 11b Board connection portion 12 Insulating housing 12a Split part 21 Metal shell 21a Main body portion 21b Tube portion 21c Through hole 21d Press-fit groove 21e Cap plate 22 Insulator 22a Small hole 23 Socket contact 23a One end portion 23b Other end portion 33 Signal contact 33a Spring part 33c One end 33d Claw 34 Ground contact 34a Spring part 34c One end 34d Claw 41 Recess 42 Groove part 42a Projection 43 Groove part 43a Projection 44 Substrate insertion hole 4 6a arrow 51 printed circuit board 51a edge portion 60 card edge type coaxial connector 61 printed circuit board 61a edge portion A1 first direction A2 second direction A3 third direction

Claims (8)

In a card edge type coaxial connector provided with a cable connection part connected to a coaxial cable and a board connection part connected to a printed circuit board,
With an insulating housing,
The cable connection portion includes a metal shell, an insulator held in the metal shell, and a socket contact held in the insulator;
The board connecting portion is provided with an elastic signal contact having one end attached to the socket contact so as to be aligned with the socket contact, and disposed on both sides of the signal contact and one end attached to the metal shell. A pair of ground contacts with high elasticity
The signal contact and the ground contact are housed in the insulating housing,
The other end of each of the signal contact and the ground contact is held against the elasticity by being hooked on the insulating housing ,
The insulating housing is composed of two split parts having the same shape, and the cable connection part and the board connection part are disposed between the two split parts .
A card edge type coaxial connector.   Each of the signal contact and the pair of ground contacts has two spring portions having the same shape sandwiching the printed circuit board in a plate thickness direction, and the socket contact and the signal contact extend in a first direction, The signal contact and the ground contact are arranged in a second direction orthogonal to the first direction, and the two spring portions are arranged in a third direction orthogonal to the first direction and the second direction. The card edge type coaxial connector according to claim 1, which faces each other in a direction.   2. The card edge type coaxial connector according to claim 1, wherein the signal contact includes two spring portions having the same shape that sandwich the printed board in a plate thickness direction.   4. The card edge type coaxial connector according to claim 1, wherein each of the pair of ground contacts has two spring portions having the same shape sandwiching the printed circuit board in a plate thickness direction. The card edge type coaxial connector according to any one of claims 1 to 4, wherein the signal contact is attached to the socket contact by a press-fit structure . 6. The card edge type coaxial connector according to claim 1, wherein each of the pair of ground contacts is attached to the metal shell by a press-fit structure . The card edge type coaxial connector according to any one of claims 1 to 6 , wherein a plurality of combinations of the cable connection portion and the board connection portion are arranged to form a multipolar structure. A connector element and an insulating housing containing the connector element;
The connector element includes a cable connection portion connected to a coaxial cable, and a board connection portion connected to a printed circuit board,
The cable connection portion includes a metal shell, an insulator held in the metal shell, and a socket contact held in the insulator,
The board connecting portion is provided with elastic signal contacts having one ends attached to the socket contacts so as to be aligned with the socket contacts, and disposed on both sides of the signal contacts, and has one ends attached to the metal shell. A pair of ground contacts having high elasticity,
The other end of each of the signal contact and the ground contact is held against the elasticity by being hooked on the insulating housing ,
The insulating housing is composed of two split parts having the same shape, and the cable connection part and the board connection part are disposed between the two split parts .
A card edge type coaxial connector.

Images