JPH09320699A - Coaxial connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a cutting hardly widened even if a coaxial cable in the rear side is lifted up at the time when a connector is fitted with a counterpart connector and improve the fitting strength by forming the cutting in the front end part of a cylindrical outside terminal part. SOLUTION: A case to be connected with an outside conductor of a transverse coaxial cable 100 and at the same time to surround and hold an insulating body 20 is divided into an inside case 30 and an outside case 50. In the inside case 30, a vertical cylindrical outside terminal part 31, insulator holding parts 36, 36, a joining plate part 42, and outside conductor pressure connecting piece parts 44, 44 are unitedly formed and the terminal part 31 has a cutting 32 in the front end part, the parts 36, 36 are projected upward from the upper end parts in both sides of the outside terminal part 31, the plate part 42 is projected backward from the rear side upper end part of the outside terminal part 31, and the parts 44, 44 are projected upward from end parts in both sides of the joining plate part 42. Also, in the outside case 50, a side plate part 51 and an upper plate part 56 are unitedly formed and the part 51 surrounds the outer parts of the insulator holding parts 36, 36 and the part 56 covers the upper sides of the inside aperture parts of the insulator holding parts 36, 36.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direction in which a coaxial cable to be connected, such as a mobile phone, a car phone, and a surface mount type coaxial connector for PHS, and a mating direction of a mating connector (projecting direction of a terminal portion). Relates to a substantially vertical coaxial connector.

[0002]

2. Description of the Related Art A conventional surface mount type coaxial connector comprises a contact (center contact), an insulator, a case (shield case), etc., as disclosed in Japanese Unexamined Patent Publication No. 8-17523.

A center terminal portion protruding downward and a center conductor crimping piece portion (conductor crimping portion) for holding and crimping the center conductor of the coaxial cable are integrally formed on the contact. Further, the insulator has a contact holding portion having an upper holding groove (accommodating recess) into which the center conductor crimping piece portion of the contact is inserted and a terminal mounting hole (contact insertion hole) into which the central terminal portion is inserted, and an upper portion. A lid piece portion that closes above the holding groove is integrally formed.

The case has a cylindrical external terminal portion (shell portion) opened downward, an insulator holding portion (cylindrical body) surrounding and holding the outer periphery of the insulator, and an insulator holding portion. An upper plate portion (lid plate) that closes the upper side and an outer conductor crimping piece portion (braided crimping portion) that laterally holds and crimps the outer conductor of the coaxial cable are integrally formed.

In the present specification, "portrait",
"Upward" and "Downward" are directions that are substantially parallel to the mating direction with the mating connector, "Upward" is opposite to the mating side with the mating connector, and "Down" is mating with the mating connector. It shall indicate the side direction. Also, "sideways", "forward", and "rearward" are directions that are substantially perpendicular to the mating direction with the mating connector, "forward" is the opposite direction of the extension side of the coaxial cable, and "rearward" is the coaxial cable. The direction of the distraction side of The same applies to "upper", "lower", "front", "rear" and other similar expressions.

[0006]

In the case of the surface mount type coaxial connector described above, the insulator holding portion is formed so as to project from the upper end portion of the external terminal portion, and the upper plate portion is formed from the front upper end portion of the insulator holding portion. The external terminal portion is formed in a protruding shape and has a tubular shape having a cut (joint) at the rear end portion.

Therefore, when the mating connector fixed to a printed wiring board or the like is fitted, if the rear portion of the connected coaxial cable is lifted upward, the cut of the external terminal portion is likely to open and the fitting strength is weak. There was a problem.

The present invention has been made in view of such a conventional problem,
The purpose of the present invention is to provide a coaxial connector having a strong mating strength.

[0009]

The features of the present invention for solving the above-mentioned conventional problems and achieving the intended purpose are as follows.
A contact having a vertically oriented center terminal portion, connected to a center conductor of a horizontally oriented coaxial cable, an insulator surrounding and holding the contact, and a vertically oriented cylindrical external terminal portion, In a coaxial connector, which is connected to an outer conductor of a coaxial cable and includes a case that surrounds and holds the insulator, the case is coupled via mutually engaging convex or concave engaging portions. The inner case and the outer case, the inner case, the external terminal portion,
An insulator holding portion projecting upward from both side upper end portions of the external terminal portion is integrally formed, the external terminal portion has a vertical cut at a front end portion, and the insulator is provided in the outer case. The upper plate part is formed to close the upper part of the holding part.

Further, the present invention is characterized in that a central terminal portion protruding downward, a connecting portion protruding forward or backward from an upper end portion of the central terminal portion, and an upward or downward protruding portion from both side end portions of the connecting portion. And a contact integrally formed with a central conductor crimping piece portion for laterally sandwiching and crimping the central conductor of the coaxial cable, and a horizontally elongated upward and backward opening to form the connecting portion of the contact and the central conductor crimping piece portion. An upper holding groove to be inserted, a contact holding portion having a terminal mounting hole penetrating downward from the upper holding groove to insert the central terminal portion, and an upper holding groove protruding upward from the contact holding portion. An insulator integrally formed with a lid piece that closes the upper side, a cylindrical external terminal portion having a vertical cut at the front end portion and opening downward, the outer peripheral terminal portion An insulator holding portion projecting upward from both side upper end portions and holding the outer peripheral side of the insulator, a connecting plate portion protruding rearward from a rear upper end portion of the external terminal portion, and both side end portions of the connecting plate portion. An inner case integrally formed with an outer conductor crimping piece portion that projects upward and laterally holds and crimps the outer conductor of the coaxial cable;
A side plate portion that surrounds and engages with an outer peripheral side of the insulator holding portion of the inner case; an upper plate portion that projects rearward from a front upper end portion of the side plate portion and closes an upper portion of the insulator holding portion; and And an outer case integrally formed with a case holding piece that projects downward from both rear end portions of the upper plate and engages with the lower side of the connecting plate of the inner case.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. In the figure, 10, 20, 3
Reference numerals 0 and 50 are contacts, insulators, inner case, and outer case that constitute a coaxial connector such as an ultra-small size (external terminal portion diameter is about 2 mm) surface-mounted coaxial connector, and 100 is connected to the coaxial connector. It is a coaxial cable.

As shown in FIGS. 6 to 8, the contact 10 includes a central terminal portion 11 (female terminal) which is detachably fitted to a central terminal portion of a mating connector, and a coaxial cable 10.
It is provided with central conductor crimping pieces 17 and 17 for laterally sandwiching and crimping the 0 central conductor 101, and these are integrally formed by punching, bending, etc. of one copper alloy plate material.

The center terminal portion 11 is formed by projecting two terminal piece portions downward, and has a substantially inverted U-shaped vertical cross-sectional shape and opens downward. Further, contacts 12 and 12 are provided at the lower ends (tips) of both sides so as to project inward. In addition, the contact 10 has the connecting portion 16 at the center terminal portion 11.
Is formed to project rearward from the upper rear end portion of
The center conductor crimping pieces 17, 17 are formed so as to project downward from both end portions of the connecting portion 16. The center conductor crimping pieces 17, 17 have a substantially inverted U-shaped vertical sectional shape and open downward before assembly.

As shown in FIG. 20, the contact 10 is formed by inserting the central conductor 101 of the coaxial cable 100 between the central conductor crimping pieces 17, 17 and then bending the central conductor crimping pieces 17, 17 inward. By sandwiching and crimping the center conductor 101, the center conductor 1 of the coaxial cable 100
01 is connected. As a result, the central terminal portion 11 projects perpendicularly to the axial direction of the coaxial cable 100.

As shown in FIGS. 9 to 12, the insulator 20 includes a contact holding portion 21 that holds the upper portion of the contact 10, a lid piece portion 25 that closes the upper portion of the contact holding portion 21, and the outside of the mating connector. A fitting portion 26 to be inserted inside the terminal portion is provided, and these are integrally formed by injection molding of a synthetic resin material.

The contact holding portion 21 has a front portion formed in a substantially cylindrical shape, and has a rearward protruding portion of a substantially rectangular parallelepiped shape, and the fitting portion 26 faces downward from a lower end portion of a front portion of the contact holding portion 21. It is formed in a substantially columnar shape protruding in the direction of. An upper holding groove 22 that is horizontally long and opens upward and backward is provided in the upper surface portion of the contact holding portion 21, and the contact holding portion 21 and the fitting portion 26 penetrate downward from the upper holding groove 22. Terminal mounting hole 2
3 are provided.

Further, a lid piece 25 is provided on the front end portion of the upper surface of the contact holding portion 21 so as to project upward, and engaging flanges 28, 28 are provided on both front side surface portions of the contact holding portion 21. Engaging projections 29, 29 are provided so as to project downward at both end portions of the lower surface of the rear projecting portion of the contact holding portion 21.

Then, as shown in FIG. 22, in the insulator 20, the central terminal portion 11 of the contact 10 is provided with the terminal mounting hole 2
3, and the connecting portion 16 and the center conductor crimping piece portion 17, 1
7 and the center conductor 101 and the inner insulator 103 of the coaxial cable 100 are fitted into the upper holding groove 22, and the base portion of the lid piece portion 25 is bent backward to cover the upper portion of the contact 10 so that the contact 10 is mounted. It has become.

As shown in FIGS. 13 to 16, the inner case 30 has an external terminal portion 31 (female terminal) which is detachably fitted to the external terminal portion of the mating connector, and an insulating material which holds the insulator 20. Body holding portions 36, 36 and the coaxial cable 10
Outer conductor crimping portions 44, 44 for laterally holding and crimping the outer conductor 105 of 0, and cable holding piece portions 46, 46 for holding the outer insulator (outer skin) 107 of the coaxial cable 100.
And these are integrally formed by punching, bending, etc. of one copper alloy plate material.

The external terminal portion 31 is formed in a vertically open cylindrical shape having a vertical cut (joint) 32 at the front end, and vertical cuts 33, 33 are provided at the rear lower edge portion. A lateral contact portion 34 is provided on the inner surface so as to project inward.

The insulator holding portions 36, 36 are formed so as to project upward from the upper end portions on both sides of the external terminal portion 31 and open upward, and the engaging protrusions 37, 37 are formed on both side portions of the outer surface thereof. Is provided so as to project outward, and engagement hooks 38, 38 are provided at the front end portion so as to project forward and upward.

The inner case 30 has a connecting plate portion 42.
However, the upper rear portion of the external terminal portion 31 (the insulator holding portion 3
The intermediate conductors 6 and 36) are formed so as to project rearward through the bent portions, and the outer conductor crimping piece portions 44, 44 are formed.
Are formed so as to project upward from both side end portions of the connecting plate portion 42, and the cable holding pieces 46, 46 are connected to each other by the connecting plate portion 42.
Is formed so as to project upward from the rear end portions on both sides of the. The outer conductor crimping portions 44, 44 and the cable holding piece portions 46, 46 have a substantially U-shaped vertical sectional shape and open upward before assembly. Therefore, the inner case 30 has a shape in which there is no portion protruding above the insulator holding portions 36, 36.

Then, in the inner case 30, as shown in FIG. 21, the fitting portion 26 of the insulator 20 is inserted into the outer terminal portion 31 from above, and the contact holding portion 21 is inserted into the insulator holding portion 36. It is fitted in the inside of 36, and the engaging collars 28, 2
8 is brought into contact with the upper edges of the insulator holding portions 36, 36, and the connecting plate portion 42 is sandwiched between the engaging protrusions 29, 29,
The insulator 20 is attached. The upper surface of the insulator 20 is exposed from the inner case 30.

Further, in the inner case 30, as shown in FIG. 22, after the outer conductor 105 of the coaxial cable 100 is inserted between the outer conductor crimping pieces 44, 44, the outer conductor crimping pieces 44, 44 are bent inward. The outer conductor 105 is clamped by holding the outer conductor 105, and the outer insulator 107 of the coaxial cable 100 is inserted between the cable holding pieces 46 and 46, and then the cable holding pieces 46 and 46 are bent inward to form the outer insulator 107. The outer conductor 1 of the coaxial cable 100 by holding the
05 is connected. As a result, the external terminal portion 31 projects perpendicularly to the axial direction of the coaxial cable 100.

The outer case 50, as shown in FIGS. 17 to 19, has a side plate portion 51 surrounding the outside of the insulator holding portions 36, 36 of the inner case 30 and an inner opening portion of the insulator holding portions 36, 36. And an upper plate portion 56 that covers the upper part of the above (the upper surface of the insulator 20), and these are integrally formed by punching, bending or the like of one copper alloy plate material.

The side plate portion 51 has a front surface portion and a side surface portion, and a front portion thereof has a substantially C-shaped lateral cross-sectional shape that opens vertically and rearward, and rear side portions of both side surfaces have a linear lateral cross-sectional shape that projects rearward. The engaging holes 52, 52 are provided in the front portions of both side surfaces, and the vertically extending engaging notch 53 is provided in the lower edge portion of the front surface. Then, the upper plate portion 56 is
The side plate portion 51 is formed so as to project rearward from the upper end portion of the front surface of the side plate portion 51 through the bent portion, the front portion is formed in a substantially disc shape, and has a rectangular plate-shaped protruding portion in the rear side. The shape is such that the upper part of the inner opening portion of 51 is closed.

Further, the outer case 50 is formed with case holding pieces 57, 57 projecting downward from both rear end portions of the upper plate portion 51 and projecting to the outside of both rear end portions of the side plate portion 51. ing. In addition, the case holding pieces 57, 5
7 is open downward before assembly.

As shown in FIGS. 1 to 5, the outer case 50 is fitted on the inner case 30 from above so that the insulator holding portions 36, 36 are fitted inside the side plate portion 51, and the front portion is covered. The engaging projections 37, 37 of the engaging holes 52, 5
2, the engagement hooks 38, 38 are engaged with the engagement notches 53, and further, the case holding piece portions 57, 57 at the rear end portion.
Bend inward to bend the connecting plate 42 forward (external terminal 3
1 and the outer conductor crimping piece portions 44, 44 are sandwiched from below to engage with the inner case 30.

The contact 10, the insulator 20,
To assemble a coaxial connector including the inner case 30 and the outer case 50, first, as shown in FIG. 20, the center conductor 101 of the coaxial cable 100 was inserted between the center conductor crimping pieces 17, 17 of the contact 10. After that, the center conductor crimping pieces 17, 17 are bent inward and crimped to the center conductor, and the contact 10 is attached to the coaxial cable 1.
00 to the central conductor 101.

Further, as shown in FIG. 21, the fitting portion 26 of the insulator 20 is inserted into the inside of the external terminal portion 31 of the inner case 30 from above, and the contact holding portion 21 is attached to the insulator holding portions 36, 36. The engagement protrusions 28, 28 are fitted inwardly, and the engagement flanges 28, 28 are brought into contact with the upper edges of the insulator holding portions 36, 36.
The insulator 20 is attached to the inner case 30 such that the connecting plate portion 42 is sandwiched between the 9 and 29.

Next, as shown in FIG. 22, the contact 1
The center terminal portion 11 of 0 is inserted into the terminal mounting hole 23 of the insulator 20, and the connecting portion 16 and the center conductor crimping piece portions 17 and 17, the center conductor 101 of the coaxial cable 100, and the inner insulator 10 are inserted.
3 is fitted in the upper holding groove 22, and the coaxial cable 1
The outer conductor 105 of No. 00 is inserted between the outer conductor crimping pieces 44, 44 of the inner case 30, and the outer insulator 107 is inserted between the cable holding pieces 46, 46. And insulator 2
The base portion of the lid piece 25 of 0 is bent backward to cover the upper part of the contact 10, and the outer conductor crimping pieces 44, 44 of the inner case 30 are bent inward to crimp the outer conductor 105 of the coaxial cable 100, The contacts 10 are attached to the insulator 20 by bending the holding pieces 46, 46 to hold the outer insulator 107, and the inner case 30 is connected to the outer conductor 105 of the coaxial cable 100.

As shown in FIGS. 1 to 5, the insulator holding portions 36, 36 are fitted inside the side plate portion 51 so that the outer case 50 covers the inner case 30, and the engaging projections 37, 37 are formed. Are engaged with the engaging holes 52, 52, the engaging hooks 38, 38 are engaged with the engaging notches 53, the case holding pieces 57, 57 are bent inward, and the front portion of the connecting plate portion 42 is moved downward. The inner case 30 and the outer case 50 are joined together by being held between them, and the insulator 20 is surrounded and securely fixed by both.

Therefore, the upper plate portion 56 is provided on the outer case 50, and the outer terminal portion 31, the insulator holding portions 36, 36, and the outer conductor crimping piece portions 44, 44 are provided on the inner case 30 to crimp the outer conductor. Since the piece portions 44, 44 are formed so as to project upward from both side end portions of the connecting plate portion 42 projecting rearward from the rear upper end portion of the external terminal portion 31, the insulator holding portions 36, 36 of the inner case 30 are formed. Since there is no part protruding upward, the insulator 20 can be easily inserted,
Further, since the coaxial connector 100 can be attached to the inner case 30 and the outer conductor 105 can be directly clamped and fixed, the assembly is easy and automation is possible, and the quality is stable.

Then, the external terminal portion 31 of the inner case 30
Since the notch 32 is provided at the front end portion, the notch 32 of the external terminal portion 31 can be removed even when the rear portion of the coaxial cable 100 is lifted up when fitted with a mating connector fixed to a printed wiring board or the like. It is difficult to open and the fitting strength is improved.

In the above embodiment, the outer conductor crimping piece portion is provided in the inner case, but the outer conductor crimping piece portion may be provided in the outer case. Further, in the above-described embodiment, the convex engaging portion (engaging protrusion 3
7, 37, engaging hooks 38, 38) and concave engaging portions (engaging holes 52, 52, engaging notch 53) are provided in the outer case, the concave shape is provided in the inner case. The engaging portion may be provided, and the convex engaging portion may be provided on the outer case.

[0036]

As described above, in the coaxial connector according to the present invention, since the notch of the cylindrical external terminal portion is provided at the front end portion, when the mating connector is fitted, the rear coaxial cable is lifted upward. Even if the cut is difficult to open, the fitting strength can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an embodiment of a coaxial connector according to the present invention and an example of a mating connector.

FIG. 2 is a side view of the coaxial connector in FIG.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a bottom view of FIG.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a side view of a contact (before assembly) that constitutes the coaxial connector of FIG.

FIG. 7 is a rear view of FIG. 6;

FIG. 8 is a bottom view of FIG.

9 is a side view of an insulator (before assembly) that constitutes the coaxial connector of FIG.

FIG. 10 is a plan view of FIG.

FIG. 11 is a front view of FIG. 9;

12 is a cross-sectional view taken along the line BB of FIG.

FIG. 13 is a side view of an inner case (before assembly) that constitutes the coaxial connector of FIG.

FIG. 14 is a plan view of FIG.

FIG. 15 is a front view of FIG.

16 is a cross-sectional view taken along the line CC of FIG.

17 is a side view of an outer case (before assembly) that constitutes the coaxial connector of FIG. 2. FIG.

18 is a front view of FIG.

FIG. 19 is a bottom view of FIG.

20 is a side view showing a first step of the assembling work of the coaxial connector of FIG.

21 is a cross-sectional view showing a second step of the assembling work of the coaxial connector of FIG.

22 is a sectional view showing a third step of the assembling work of the coaxial connector of FIG.

[Explanation of symbols]

 10 contact 11 center terminal part 12 contact point 16 connecting part 17 center conductor crimping piece part 20 insulator 21 contact holding part 22 upper holding groove 23 terminal mounting hole 25 lid piece part 26 fitting part 28 engaging flange 29 engaging protrusion 30 inside Case 31 External terminal part 32 Cut (joint) 33 Notch 34 Contact point 36 Insulator holding part 37 Engagement protrusion 38 Engagement hook 42 Connecting plate part 44 External conductor crimping piece part 46 Cable holding piece part 50 Outer case 51 Side plate part 52 Engagement hole 53 Engagement notch 56 Upper plate part 57 Case holding piece part 100 Coaxial cable 101 Central conductor 103 Internal insulator 105 External conductor 107 External insulator

Claims (2)

[Claims] 1. A contact having a vertically oriented center terminal portion, which is connected to a center conductor of a horizontally oriented coaxial cable, an insulator surrounding and holding the contact, and a vertically oriented cylindrical external terminal portion. And a case that is connected to the outer conductor of the coaxial cable, and that includes a case that surrounds and holds the insulator, the case having a convex or concave engaging portion that engages with each other. The outer case is integrally formed with the outer terminal part and the insulator holding part projecting upward from both upper end portions of both sides of the outer terminal part. A coaxial connector, wherein the external terminal portion has a vertical cut in a front end portion, and an upper plate portion that closes above the insulator holding portion is formed in the outer case. 2. A central terminal portion of a coaxial cable that projects downward, a connecting portion that projects forward or backward from an upper end portion of the central terminal portion, and a central conductor that projects upward or downward from both end portions of the connecting portion. A contact integrally formed with a central conductor crimping piece for laterally sandwiching and crimping, and an upper holding groove into which the connecting portion of the contact and the central conductor crimping piece are inserted by opening in a horizontally elongated upward and backward direction. And a contact holding portion having a terminal mounting hole penetrating downward from the upper holding groove and into which the central terminal portion is inserted, and a lid piece projecting upward from the contact holding portion and closing the upper side of the upper holding groove. An integrally formed portion, a cylindrical external terminal portion having a vertical cut at the front end portion and opening downwards, and an upper side portion on both sides of the external terminal portion. An insulator holding portion projecting in the direction to hold the outer peripheral side of the insulator, a connecting plate portion projecting rearward from a rear upper end portion of the external terminal portion, and an upward projecting portion from both side end portions of the connecting plate portion. An inner case integrally formed with an outer conductor crimping piece for laterally sandwiching and crimping the outer conductor of the coaxial cable; and a side plate portion surrounding and engaging the outer peripheral side of the insulator holding portion of the inner case, An upper plate portion that projects rearward from a front upper end portion of the side plate portion and closes the upper part of the insulator holding portion, and a lower plate portion that projects downward from both rear end portions of the upper plate portion and below the connecting plate portion of the inner case. A coaxial connector comprising an outer case integrally formed with a case holding piece portion that engages with a side.