JP2976325B2 - Coaxial connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial connector, and more particularly to a coaxial connector used for connecting a coaxial cable to a board in equipment requiring high-speed transmission.

[0002]

2. Description of the Related Art FIGS. 18 and 19 show a conventional example of a coaxial connector used for connecting a coaxial cable and a substrate. The connector shown in FIG. 18 has a straight plug 52 or a right angle plug 53 to which a coaxial cable is connected at a connection portion 51 to a substrate 50.
Is a two-piece coaxial connector configured to connect the two. The connector shown in FIG. 19 is a board-in type coaxial connector that directly connects the plug body 55 to which the coaxial cable 54 is connected to the substrate 50. Further, in these conventional connectors, the connection between the coaxial cable and the plug or the plug body is performed by removing the outer insulating coating of the coaxial cable or by removing the inner outer conductor (shielding mesh wire) or the center conductor (signal wire). And connecting the outer conductor and the center conductor to the corresponding terminals of the plug or the plug body, respectively.

[0003]

However, the above-mentioned conventional coaxial connector has the following problems. First, in the case of the two-piece coaxial connector shown in FIG. 18, by changing the type of plug, it is possible to cope with various different connection modes, but there is a problem that the manufacturing cost increases due to the large number of parts. . In addition, a large number of steps are required to connect the coaxial cable to the coaxial connector, which complicates the operation. Further, in the case of the board-in type coaxial connector shown in FIG. 19, although there is no cost increase due to an increase in the number of components, the work is complicated because the man-hour required to connect the coaxial cable to the coaxial connector is increased. There's a problem.

An object of the present invention is to provide a coaxial connector in which the number of steps for connecting a coaxial cable is small and the connecting operation is simple.

[0005]

According to the present invention, there is provided a coaxial connector mounted on a substrate and connected to a coaxial cable, comprising: a base; and a cover insulator engaged with the base. A base insulator having a substantially flat plate shape, and a first press-contact portion attached to the base insulator, extending at one end in a predetermined direction and press-contacting the center conductor of the coaxial cable, and the substrate at the other end. A first contact having a first terminal portion connected to the conductor pattern of the above, and a first contact attached to the base insulator, extending at one end in the predetermined direction and press-contacting a drain wire of an outer conductor of the coaxial cable. A second contact having a second pressure contact portion and having a second terminal portion connected to the conductor pattern at the other end; A lock plate attached to the cover insulator for locking the cover insulator, wherein the cover insulator receives the first and second press contact portions in the predetermined direction, respectively, in the first and second contact storage holes. A lock plate receiving portion that receives the lock plate in the predetermined direction; an engaging portion that engages with the lock plate; a cable storing portion that stores a terminal portion of the coaxial cable; A first insertion hole passing through the first contact storage hole for pressing the center conductor against the first pressure contact portion, and communicating with the cable storage portion, and connecting the drain wire to the second pressure connection portion; A second insertion hole passing through the second contact storage hole for pressing against the first portion;
A first cylindrical portion surrounding the first insertion hole and separating the first insertion hole from the first contact storage hole at an intersection of the insertion hole and the first contact storage hole; A second portion that surrounds the second insertion hole at the intersection of the second insertion hole and the second contact storage hole and separates the second insertion hole from the second contact storage hole.
And a cylindrical portion.

Further, in the coaxial connector according to the present invention, the cable storage portion is a cable storage hole opened on one side surface of the cover insulator.

Further, the coaxial connector according to the present invention is characterized in that the cable storage portion is a cable storage concave portion opened on a side surface and one side surface of the cover insulator.

Further, the coaxial connector of the present invention has the first
And a second insertion hole is opened on a side surface of the cover insulator, and a storage groove for housing the center conductor and the drain wire protruding from the opening is provided on the side surface.

[0009]

In the coaxial connector according to the present invention, the connection with the coaxial cable uses a press contact method. Also, a coaxial cable having a drain wire connected to an external conductor is used. And when pressing the coaxial cable,
Insert the center conductor of the coaxial cable and the drain wire into the cover insulator. This cover insulator is provided with first and second cylindrical portions for guiding a cable to a predetermined position, and these cylindrical portions are
The first and second contact receiving holes into which the first and second contacts enter are cylindrical. These cylindrical portions, when crimped, break through the crimps of the contacts, and the central conductor and drain wire passing therethrough are connected to the first and second contacts, respectively.

[0010]

Next, embodiments of the present invention will be described. First, the coaxial connector of the first embodiment will be described with reference to FIGS. This coaxial connector is configured by combining a base 4 and a cover insulator 5 as shown in FIG.

As shown in FIG. 2, the base 4 is made of a base insulator 4a made of an insulating material such as a synthetic resin.
And a center conductor connecting contact (first contact) 1 made of a conductive material such as a metal, a drain wire connecting contact (second contact) 2 made of a conductive material such as a metal, and a metal. It has lock plates 3, 3 'made. The base 4 is mounted on a substrate (not shown).

The center conductor connecting contact 1 is attached to a base insulator 4a, and is molded into the base insulator 4a in the illustrated example. The center conductor connecting contact 1 extends in a predetermined direction and is in contact with the center conductor 6a of the coaxial cable 6 shown in FIG.
a at one end thereof. Further, the contact 1 for connecting the center conductor has a first terminal 1b connected to a conductive pattern (not shown) on the substrate at the other end.
In FIG. 9, the coaxial cable 6 includes a central conductor 6a,
It is composed of the insulating coating 6b, the outer conductor 6c, the drain wire 6d connected thereto, and the outer insulating coating 6e.

The drain wire connecting contact 2 is attached to the base insulator 4a, and is molded into the base insulator 4a in the example shown. The drain wire connection contact 2 is
A contact press contact portion (second press contact portion) that extends in a predetermined direction and presses against the drain wire 6 d of the outer conductor 6 c of the coaxial cable 6.
At its one end. Further, the contact 2 for drain wire connection has a second terminal 2b connected to a conductor pattern (not shown) of the substrate at the other end.

The lock plates 3, 3 'are attached to the base insulator 4a, and are molded into the base insulator 4a in the example shown. The lock plates 3 and 3 ′ are provided with cover insulators 5.
And a square hole 3 for this locking.
a, 3a 'are formed.

FIG. 3 shows a state in which the contact 1 for connecting the central conductor, the contact 2 for connecting the drain wire, and the lock plates 3, 3 'as described above are integrally press-molded. Then, the base conductor 4 shown in FIG. 2 is manufactured by molding the center conductor connection contact 1, the drain wire connection contact 2, and the lock plates 3 and 3 'into the base insulator 4a, for example, as described above. .

The contact 1 for connecting the central conductor, the contact 2 for connecting the drain wire, and the lock plates 3 and 3 'are integrally formed by pressing, and these are molded into the base insulator 4a. By doing, the base insulator 4 in the base 4
a and the contacts 1, 2, etc. can be assembled at one time, and the cost can be reduced.

On the other hand, the cover insulator 5 has a substantially box shape made of an insulating material such as a synthetic resin. Then, as shown in FIG. 4, two side-by-side contact storage square holes 5 a and 5 a ′ (first and second contact storage holes) and two side-by-side lock plate storage square holes (lock plate) Storage portions) 5c, 5c ', lock plate fixing convex portions (engaging portions) 5d, 5d' formed on the inner surfaces of the lock plate storage square holes 5c, 5c ', respectively, a cable storage portion 5e, and a first insertion hole 5f. , A second insertion hole 5g, two juxtaposed cable guiding cylindrical portions (first and second cylindrical portions) 5b, 5b ', and two juxtaposed storage grooves 5
h, 5h '.

The contact storage rectangular holes 5a and 5a 'are used to receive the contact pressure contact portions 1a and 2a in predetermined directions, that is, in the first embodiment, that is, in the direction perpendicular to the plane of FIG. 4A. Part. The lock plate storage square holes 5c and 5c '
3 'in a predetermined direction, that is, in the first embodiment, FIG.
This is a portion for receiving along a direction perpendicular to the paper surface in FIG. In the first embodiment, the lock plate storage portions are the lock plate storage square holes 5c and 5c '. However, for example, the side surface of the cover insulator 5 having a shape in which the upper opening is closed in FIG. The recess may be formed as shown in FIG.

The lock plate fixing projections 5d, 5d '
When the lock plates 3, 3 'are inserted into the lock plate storage holes 5c, 5c', the lock plates 3, 3 '
This is a portion for engaging the cover insulator 5 with the base insulator 4a by engaging with the square holes 3a, 3a 'of 3'. The cable storage portion 5e is a portion that receives and stores the end of the coaxial cable 6.

One end of the first insertion hole 5f communicates with the cable storage portion 5e, and the other portion passes through the contact storage square hole 5a. By this passage, the center conductor 6a of the coaxial cable 6 can be pressed against the contact press contact portion 1a. One end of the second insertion hole 5g communicates with the cable storage portion 5e, and the other portion passes through the second contact storage square hole 5a '. By this passage, the drain wire 6d connected to the outer conductor 6c of the coaxial cable 6 can be pressed against the contact press contact portion 2a.

A cable guiding cylindrical portion (first cylindrical portion) 5
b surrounds the first insertion hole 5f at the intersection of the first insertion hole 5f and the contact storage square hole 5a, and separates the first insertion hole 5f from the contact storage hole 5a. This makes it easier for the center conductor 6a of the coaxial cable 6 to pass through the rectangular hole 5a. Similarly, the cable guiding cylindrical portion (second cylindrical portion) 5b 'surrounds the second insertion hole 5g at the intersection of the second insertion hole 5g and the contact storage rectangular hole 5a'. Insertion hole 5
g is separated from the contact receiving hole 5a '. This makes it easier for the drain wire 6d of the coaxial cable 6 to pass through the contact housing rectangular hole 5a '.

Next, the procedure for connecting the coaxial cable 6 to the coaxial connector of the first embodiment having the above configuration will be described with reference to FIGS.
This will be described below. First, the coaxial cable 6 is inserted into the cover insulator 5 to obtain a state as shown in FIG. That is, the end of the coaxial cable 6 is covered with the cover insulator 5.
, The center conductor 6a of the coaxial cable 6 is inserted into the first insertion hole 5f, and the drain wire 6d is inserted into the second insertion hole 5g.

At this time, the cable guiding cylindrical portions 5b, 5
With the presence of b ', the center conductor 6a and the drain wire 6d can be inserted without being obstructed by the contact housing rectangular holes 5a, 5a' as shown in FIG.
On the other hand, when the cable guiding cylindrical portions 5b and 5b 'are not provided, the center conductor 6a and the drain wire 6d hit the contact housing rectangular holes 5a and 5a' as shown in FIG. .

After the insertion, the excess portions of the central conductor 6a and the drain wire 6d are bent and stored in the storage grooves 5h, 5h 'of the cover insulator 5 (see FIGS. 6 and 7) so that the surrounding parts can be touched. Absent.

Next, as shown in FIG. 6, the cover insulator 5 is placed on the base 4 and pushed down to the base 4 side. Thereby, as shown in FIG. 7, the contact pressure contact portion 1a of the center conductor connecting contact 1 breaks through the cable invitation cylindrical portion 5b and is pressed against the center conductor 6a. Similarly, the drain wire connecting contact 2 pierces the cable guiding cylindrical portion 5b 'and is pressed against the drain wire 6d, thereby completing the connection between the coaxial cable 6 and the coaxial connector. At this time, the lock plate fixing projections 5d, 5d 'of the cover insulator 5 are fitted into the square holes 3a, 3a' of the lock plates 3, 3 ', so that the cover insulator 5 is locked.

Next, FIGS. 10 to 17 show a coaxial connector according to a second embodiment. This coaxial connector is substantially the same as the coaxial connector of the first embodiment except for the following points, and is similarly connected to a coaxial cable. Therefore, the same reference numerals are used for the same components, and the description thereof will be omitted, and only different portions will be described.

That is, in the coaxial connector of the first embodiment, the cable housing 5e formed in the cover insulator 5 has a shape of a hole opened only on the insertion side (one side surface) of the coaxial cable 6. However, in the coaxial connector of the second embodiment, the cable housing 5e has a concave shape in which the insertion side (one side surface) of the coaxial cable 6 and the side (board side) on which the base 4 is mounted are opened. It has become.

FIGS. 10 to 13 correspond to FIGS.
14 shows a state in which the base 4 and the cover insulator 5 are slightly separated from each other, and FIGS.
8 shows the same state as in FIG.

[0029]

As described above, according to the present invention, it is possible to provide a coaxial connector in which the number of steps for connecting a coaxial cable is small and the connecting operation can be easily performed.

[Brief description of the drawings]

1A is a plan view of a coaxial connector according to a first embodiment of the present invention, FIG. 1B is a side view, FIG. 1C is a front view, and FIG. 1D is a rear view.

2A is a plan view of a base of the coaxial connector shown in FIG. 1, FIG. 2B is a side view thereof, and FIG. 2C is a front view thereof.

3A is a plan view of a state in which a contact for connecting a center conductor, a contact for connecting a drain wire, and a lock plate of the coaxial connector shown in FIG. 1 are integrally press-molded, FIG. (c) is a rear view of the same.

4A is a plan view of a partial cross section of a cover insulator of the coaxial connector shown in FIG. 1, FIG. 4B is a side view of the same, FIG. 4C is a cross-sectional view taken along line cc in FIG. () Is a front view, and (e) is a rear view.

5A is a horizontal sectional view showing a state where a coaxial cable is inserted into the cover insulator shown in FIG. 4, FIG. 5B is a sectional view taken along the line bb in FIG. 5A, FIG. (d) is a sectional view taken along line dd in (a).

6A is a horizontal sectional view of the cover insulator shown in FIG. 5 partially mounted on a base, FIG. 6B is a sectional view taken along the line bb in FIG. 6A, and FIG. (D) is a sectional view taken along line dd in (a).

7A is a horizontal cross-sectional view of a state in which the cover insulator shown in FIG. 5 is completely mounted on a base, FIG. 7B is a cross-sectional view taken along the line bb in FIG. 7A, and FIG. (D) is a sectional view taken along line dd in (a).

8A is an explanatory view showing a state in which a center conductor is inserted into a cover insulator in the coaxial connector shown in FIG. 1, and FIG. 8B is an explanatory view similar to FIG. is there.

9A is an explanatory view of a coaxial cable used in the coaxial connector shown in FIG. 1, and FIG. 9B is a cross-sectional view of the same.

10A is a plan view of a coaxial connector according to a second embodiment of the present invention, FIG. 10B is a side view, FIG. 10C is a front view, and FIG. 10D is a rear view.

11A is a plan view of a state in which the base of the coaxial connector shown in FIG. 10 is manufactured by mold-in, FIG. 11B is a side view, and FIG. 11C is a rear view.

12A is a plan view of the coaxial connector shown in FIG. 10 in which a contact for connecting a center conductor, a contact for connecting a drain wire, and a lock plate are integrally formed by pressing; FIG. 12B is a side view of FIG. (c) is a rear view of the same.

13A is a plan view of a partial cross section of the cover insulator of the coaxial connector shown in FIG. 10, FIG. 13B is a side view thereof, FIG. 13C is a cross-sectional view taken along line cc in FIG. )
Is a front view, and (e) is a rear view.

14A is a plan view of the coaxial connector shown in FIG. 10 with a cover insulator partially mounted on a base, FIG. 14B is a side view, FIG. 14C is a front view, and FIG. FIG.

15A is a horizontal cross-sectional view of the coaxial connector shown in FIG. 10 in which a coaxial cable is inserted into a cover insulator and then the cover insulator is partially mounted on a base, and FIG. -B line sectional view, (c) is also a front view, (d) is also (a)
FIG. 4 is a sectional view taken along line dd in FIG.

16A is a horizontal sectional view of a state in which the cover insulator is completely attached to the base from the state shown in FIG. 15,
(B) is a sectional view taken along line bb in (a), (c) is a front view of the same, and (d) is a sectional view taken along line dd in (a).

17A is an explanatory view showing a state in which a center conductor is inserted into a cover insulator in the coaxial connector shown in FIG. 10, and FIG. 17B is an explanatory view similar to FIG. is there.

18A and 18B show a conventional coaxial connector, wherein FIG. 18A is a front view of a straight type two-piece coaxial connector, and FIG.
1 is a front view of a right-angle two-piece coaxial connector.

FIG. 19 is a front view of a conventional board-in type coaxial connector.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 contact for center conductor connection (first contact) 1a contact press contact portion (first press contact portion) 1b first terminal portion 2 contact for drain wire connection (second contact) 2a contact press contact portion (second press contact) 2b 2nd terminal part 3 lock plate 3a square hole 4 base 4a base insulator 5 cover insulator 5a contact storage square hole (contact storage part) 5b cylindrical part for guiding cable (cylindrical part) 5c lock plate storage square hole ( Lock plate storage part) 5d Lock plate fixing convex part (engagement part) 5e Cable storage part 5f First insertion hole 5g Second insertion hole 5h Storage groove 6 Coaxial cable 6a Central conductor 6b Insulation coating part 6c Outer conductor 6d Drain Wire 6e sheath

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 9/03-9/11

Claims (4)

(57) [Claims] 1. A coaxial connector mounted on a substrate and connected to a coaxial cable, comprising a base and a cover insulator locked to the base, wherein the base comprises:
A substantially flat base insulator, having a first press-contact portion attached to the base insulator and extending at one end in a predetermined direction and press-contacting the center conductor of the coaxial cable, and the other end of the substrate A first contact having a first terminal connected to the conductor pattern, a first contact attached to the base insulator, extending at one end in the predetermined direction, and press-contacting a drain wire of an outer conductor of the coaxial cable. A second contact having a second pressure contact portion and a second terminal portion connected to the conductor pattern at the other end; and a lock plate attached to the base insulator for locking the cover insulator. Wherein the cover insulator receives the first and second press contact portions in the predetermined direction, respectively, in the first and second condensers. And transfected accommodating hole, and the lock plate storing portion for receiving the lock plate at the predetermined direction,
An engagement portion that engages with the lock plate, a cable storage portion that stores an end portion of the coaxial cable, and a cable storage portion that communicates with the cable storage portion and presses the center conductor against the first pressure-contact portion. A first insertion hole passing through the first contact storage hole and a second passage communicating with the cable storage portion and passing through the second contact storage hole to press the drain wire against the second pressure contact portion; 2 insertion holes,
A first cylinder that surrounds the first insertion hole and separates the first insertion hole from the first contact storage hole at an intersection between the first insertion hole and the first contact storage hole; A second portion surrounding the second insertion hole and separating the second insertion hole from the second contact storage hole at an intersection of the second insertion hole and the second contact storage hole. A coaxial connector comprising: a second cylindrical portion; 2. The coaxial connector according to claim 1, wherein said cable storage portion is a cable storage hole opened on one side surface of said cover insulator. 3. The coaxial connector according to claim 1, wherein said cable housing portion is a cable housing concave portion opened on a side surface and one side surface of a substrate of said cover insulator. 4. The first and second insertion holes are opened on a side surface of the cover insulator, and a storage groove for storing the center conductor and the drain wire protruding from the opening is provided on the side surface. 2. The method according to claim 1, wherein
Or the coaxial connector according to claim 2.