JP3186021B2 - Connector for coaxial cable and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for a coaxial cable, and more particularly to a connector for a coaxial cable which fits into a header connector mounted on a circuit board and connects inner and outer conductors of the coaxial cable to a circuit on the board. It relates to a manufacturing method.

[0002]

2. Description of the Related Art Examples of this type of coaxial cable connector are disclosed in Japanese Unexamined Patent Publication No. Hei 4-28580, Japanese Unexamined Utility Model Publication No. 63-27983, and Japanese Unexamined Utility Model Publication No. 3-68376.
And Japanese Utility Model Laid-Open Nos. 3-68377 and 5-59773. This type of coaxial cable connector has a terminal for an internal conductor connected to an internal conductor of the coaxial cable, a terminal for an external conductor connected to an external conductor such as a braided wire, and a dielectric material disposed between the two. Each of the outer conductor terminal and the inner conductor terminal includes a contact portion that fits with the outer terminal and the inner terminal of the header connector.

[0003]

In this type of coaxial cable connector, the connection portion of the external conductor terminal is formed in a receptacle type connected to the outer terminal of the header connector. In a typical case, the connection portion of the external conductor terminal is formed in a substantially annular shape and has a plurality of slots in the height direction, and a plurality of elastic contact pieces formed by this form an elastic contact with the outer terminal of the header connector. Contact is possible.

In recent years, it has been desired to reduce the size of the entire coaxial cable connector. In such a case, however, the plurality of contact pieces of the external conductor terminal described above have become weak in strength, and as a result, the connector has been reduced. The contact piece may be permanently deformed when handled alone, resulting in poor contact at the time of mating,
There is a fear that even a slight prying at the time of fitting may cause permanent deformation and still cause poor contact.

A configuration for solving this problem is disclosed in Japanese Utility Model Laid-Open No. 3-68376, Japanese Utility Model Laid-Open No. 3-68377, and Japanese Utility Model Laid-Open No. 5-59773. Japanese Utility Model Application Laid-Open Nos. 3-68376 and 3-68377 disclose coaxial cable connectors including a support ring having a substantially regular octagonal outer shape, which is disposed outside the vicinity of the tips of a plurality of contact pieces. Further, Japanese Utility Model Application Laid-Open No. 5-59773 discloses a cylindrical ring surrounding the outer periphery of a contact piece. These support rings and rings strengthen the contact pieces and prevent deformation of the contact pieces.

However, the above-mentioned support ring and ring are configured as separate members arranged in contact with the periphery of the contact piece, and are supported by the connector only by the spring property of the contact piece. Therefore, in this case, the amount of deflection of the contact piece is small, and the degree of freedom of the spring is small. This means that poor contact is likely to occur. For example, due to the manufacturing tolerance of the receptacle type terminal and the supporting ring or ring, or the manufacturing tolerance of the mating contact and the mating connector housing, a dimensional deviation occurs in the product,
There is a risk of poor contact. In addition, there is a possibility that the support ring or the ring may fall off from the terminal due to a manufacturing tolerance of the receptacle type terminal and the support ring or the ring, particularly a forming tolerance, a deformation of the contact piece of the terminal at the time of assembling the both.

[0007]

SUMMARY OF THE INVENTION The present invention provides a coaxial cable connector which solves the above-mentioned problems. Coaxial cable connector of the present invention, the inner conductor terminal and the outer conductor terminal to be connected with each of the inner and outer conductors of the coaxial cable, and has a metallic cover member, the other party of the outer conductor terminal The connection part with the connector is configured as a receptacle type including a plurality of elastic contact pieces.
In the connector for a coaxial cable, the cover member
Are a bottom plate, a front plate and a top having an annular portion formed integrally.
A face plate is integrally provided, and the annular portion is arranged on the outer periphery of the connecting portion with a space provided between the elastic portion and the annular portion. "

Further, in the method of manufacturing a connector for a coaxial cable according to the present invention, a step of fixing a terminal for an internal conductor and a terminal for an external conductor to a dielectric portion to form a first subassembly; Attaching a substantially plate-shaped cover member extending substantially linearly to one surface to form a second subassembly; and connecting an end-treated coaxial cable to the internal conductor terminal and the external conductor terminal. Bending the cover member in the longitudinal direction, bending the cover member at a substantially right angle in at least two places, and arranging the cover member so as to surround the dielectric portion from above and below.

The coaxial cable connector of the present invention has an internal conductor terminal, an external conductor terminal, a dielectric portion, and a metal cover member. The external conductor terminal is formed substantially in a receptacle shape and has a plurality of contact pieces defined by a plurality of slots. When the coaxial cable connector is mated with the mating header connector, the contact pieces can flex outward. The metallic cover member is arranged to surround the outer periphery of the connector and extend near the outside of the elastic contact piece. Thereby, the bending of the contact piece is restricted by the cover member, and permanent deformation of the contact piece is prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A connector for a coaxial cable according to a preferred embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a coaxial cable connector 10 that has been assembled. The coaxial cable connector 10 includes an inner conductor terminal 20, an outer conductor terminal 30, first and second dielectric portions.
40 and 50 and a cover member 60 are provided.

As shown in FIG. 1C, the internal conductor terminal 20 has a substantially disk-shaped top portion 21 and a pin portion 22 and is disposed in a first dielectric portion 40. The top 21 is the inner conductor 11 of the coaxial cable 100.
0, which is to be soldered and connected to it, but the conductor receiving surface 23 has a larger area than the diameter of the pin portion 22 in order to facilitate the alignment of the inner conductor 110 and perform the connection properly. It is formed as follows.

As shown in FIGS. 1B and 1C, the connection portion 25 of the external conductor terminal 30 is formed substantially in a receptacle shape, and includes a plurality of elastic contact pieces 31 defined by slots 32.
Having. A projection 33 is formed on each elastic contact piece 31.
The external conductor terminal 30 further has an external conductor receiving portion 34 extending from one edge of the contact portion 25. The outer conductor receiving portion 34 is shown in FIG.
As described above, the coaxial cable 100 is electrically connected to the outer conductor 120 and also electrically connected to the cover member 60 by a method such as soldering. The external conductor terminal 30 is fixed in the first dielectric portion 40 so as to be radially separated from the internal conductor terminal 20. That is, the first dielectric portion 40 supports and fixes both the internal conductor terminal 20 and the external conductor terminal 30.

As shown in FIGS. 1A to 1C, the cover member 60 is disposed so as to cover the top surface of the coaxial cable connector and the bottom surface excluding the fitting portion.
2. It has an annular portion 63 and a front plate 64 that couples the top plate 61 and the bottom plate 62 on the distal end side. Cover member 60 is a coaxial cable
A connecting means for connecting the coaxial cable 100 and the external conductor terminal 30 is provided on the 100 side, which will be described later. The second dielectric portion 50 is attached to the top plate 61 by a method such as thermocompression bonding. When assembly is completed, the second dielectric portion 50 is located on the top side of the exposed inner conductor 110 of the coaxial cable 100 as shown in FIG.
It becomes a partition between 60. The annular portion 63 formed integrally with the bottom plate 62 is located over the outer periphery of the elastic contact piece 31 of the connection portion 25 of the external conductor terminal 30. The elastic contact piece 31 as shown in FIG.
A space that allows the contact piece 31 to be elastically bent is formed between the annular member 63 and the annular portion 63.

A method for manufacturing the coaxial cable connector 10 will be described below. FIG. 2 shows a first subassembly 70 that is configured in a first stage of the manufacturing process. In the first stage, the internal conductor terminal 20 is molded integrally with the first and second dielectric portions 40 and 50, and then the external conductor terminal 30 is inserted and fixed into the molded body. A retaining portion 39 is formed on the top surface side of the external conductor terminal 30. Internal conductor terminal 20 is at the top 21
Is exposed and can be connected to the inner conductor 110 of the coaxial cable 100 to be fixed. In FIG. 2A, the conductor receiving surface 23 of the top 21 is shown by coloring. First and second dielectric portions 40 and 50
In the preferred embodiment, is formed integrally with the connecting piece 71, but may be formed as a separate member. Contact piece 71
Is removed later in the connector assembly. External conductor terminal 30
The outer conductor receiving portion 33 has a protruding piece 51 for positioning the coaxial cable 100 as shown in FIGS. 2A and 2B, and a connection surface 52 which is connected to the outer conductor 120 by soldering.

FIG. 3 shows a second subassembly 80 and a connected coaxial cable 10 which are constructed in a second stage of the manufacturing process.
0 is indicated. In the figure, the second subassembly 80 is shown with carrier strips 81,82. The second subassembly 80 includes the first subassembly 70 and the cover member.
Including 60. The cover member 60 is located on the lower surface of the first subassembly 80, and the above-described top plate constituting the cover member 60 is provided.
61, the bottom plate 62, and the front plate 64 are arranged so as to be substantially linear. The annular portion 63 is placed so as to be located over the outer periphery of the contact piece 31. Further, the second dielectric portion 50 is fixed to the top plate 61 by a method such as thermocompression bonding.

As shown in FIG. 3, after the coaxial cable 100 has been subjected to the end treatment, the coaxial cable 100 is inserted from one end of the second subassembly 80. 3 and 4 are attached to the bottom plate 62 of the cover member 60.
As shown in the figure, an insulation coating crimping section 65, an upright wall 66, and an outer conductor supporting section 67 are formed. The upright wall 66 functions as an alignment when the cover member 60 and the external conductor terminal 30 are assembled, and the insulation coating crimping portion 65 and the external conductor support portion 67 are coaxial cables, respectively.
The 100 insulation coating 130 and the outer conductor 120 are crimped and fixed. At this time, the inner conductor 110 of the coaxial cable 100 is received by the conductor receiving surface 23 of the top 21 of the inner conductor terminal 20, the outer conductor 120 is received by the connection surface 52 of the outer conductor receiving portion 34 of the outer conductor terminal 30,
At this position, solder connection is made.

In the final stage of the manufacturing process, the connecting piece 71 and the carrier strips 81 and 82 are cut and removed, and FIG.
(B) A bending process of about 180 ° is performed in the direction indicated by the middle arrow C. At this time, it is bent at substantially right angles at the positions of X and Y in FIGS. 3A and 3B, whereby the front plate 64 is disposed at the tip of the coaxial cable connector 10 and the top plate 61 is disposed at the top surface. Is done. The second dielectric portion 50 includes an exposed inner conductor 110.
It is arranged almost directly above.

The top plate 61 has a side wall 72, a guide wall 73, and a fixing portion 74 for crimping. As shown in FIGS. 1A and 1B,
The side wall 72 is disposed on the side surface of the first dielectric portion 40, and the guide wall 73
The crimp fixing portion 74 is placed at a position where the outer conductor 120 on the coaxial cable side is exposed from the first dielectric portion 40. FIG.
As shown in (c), the crimp fixing portion 74 is crimped and wrapped around and fixed to the bottom side of the bottom plate 62.
0, electrical continuity between the external conductor terminal 30 and the external conductor 120 is also ensured.

FIG. 4 shows a connector for a coaxial cable according to the present invention.
10 shows a header connector 200 to which 10 can be fitted. The header connector 200 includes an outer terminal 210, an inner terminal 220, and a dielectric portion 230. The inner terminal 220 includes a receiving portion 222 including two opposing elastic contact pieces 221 and a soldering tine portion 223. The outer terminal 210 includes an annular contact portion 212 and a solder tine portion 213, and has a recess 211 on the annular contact portion 212. In this embodiment, the outer terminal 210 is integrally molded with the dielectric portion 230, and the inner terminal 220 is fitted and fixed to the dielectric portion 230.

FIG. 5 shows how the coaxial cable connector 10 and the mating header connector 200 are fitted together. The inner conductor terminal 20 of the coaxial cable connector 10 is received in the receiving portion 222 of the inner terminal 220 of the header connector. Further, the external conductor terminal 30 is configured to be in contact with the outer terminal 210, and the protrusion 33 of the elastic contact piece 31 is engaged with the recess 211 of the outer terminal 210. That is, the elastic contact piece 31 is in a half-fitted state before the two are engaged.
Bend outward. The amount of bending is limited by the annular portion 63 formed on the cover member 60, thereby preventing the contact piece 31 from excessive bending.

FIGS. 6 to 10 show another preferred embodiment of the coaxial cable connector according to the present invention. Figures 6 to 8
FIG. 9 shows a coaxial cable connector and a method of manufacturing the same. FIG. 9 shows a header connector to be mated with the connector, and FIG.

FIG. 6 (a) shows a sub-assembly 580 constructed in the second stage of manufacturing, and FIG.
A vertical section with 100 attached is shown. The first stage is similar to the first preferred embodiment and will not be described. Figure 8
Shows a coaxial connector 510 that has been assembled. The major difference from the first preferred embodiment is that the coaxial cable connector 510 comprises a pair of opposed contact pieces 526 as shown in FIGS. 6 (c) and 8. Another difference is that the coaxial cable 100 is placed directly on the cover member 560 as shown in FIG.

The outer conductor terminal 530 is similar to that of the first preferred embodiment, and its receptacle type connection portion 525 has a slot 53.
2 includes a plurality of resilient contact pieces 531 defined by the two. A projection 533 is formed on each elastic contact piece 531. The external conductor terminal 530 further includes a bottom wall 535, a clamp portion 534 which is crimped to the external conductor 120 of the coaxial cable 100 and connected by soldering, and a latch portion 536 which engages with the engagement piece 569 of the cover member 560.
Having.

The internal conductor terminal 520 has a pair of contact pieces 526 as described above, and further has an internal conductor receiving portion 523. The inner conductor 110 of the coaxial cable 100 is crimped to the inner conductor receiving portion 523 and connected by soldering.

External conductor terminal 530 and internal conductor terminal 52
Both 0's are supported within the first derivative portion 540. The external conductor terminal 530 includes a retaining portion 539.

As shown in FIGS. 6 and 7, the cover member 560 has a top plate 561, a bottom plate 562, and a front plate 564, which are bent at the final stage of manufacturing as shown by arrow B, as shown in FIG. That is, the arrangement is similar to that of the first preferred embodiment. Before the cover member 60 is bent, the second dielectric portion 550 is folded back on the top side of the connector. After the final stage in FIG. 8, although not shown, the top plate 56
The clamp portion 568 formed in FIG. 1 presses the coaxial cable 100 and the bottom plate 562 together.

The cover member 560 further has an annular portion 563. The annular portion 563 is different from that of the first preferred embodiment,
It extends upward from the bottom side. (See FIG. 6 (c) and FIG. 8.) An annular portion 563 is arranged over the outer periphery of the resilient contact piece 531 with a space provided between the resilient contact piece 531 and the resilient contact piece 531 at the time of fitting with the mating header connector. The point of preventing excessive bending is the same as that of the first preferred embodiment, but enables the manufacture of a coaxial cable connector having a lower height.

FIG. 9 shows a mating header connector 700. The mating header connector 700 has the outer terminal 710 and the inner terminal
720 and a dielectric portion 730. The inner terminal 720 forms a substantially pin-shaped contact portion 722 by bending a metal plate. The dimensions of the contact portion 722 are optimized according to the internal conductor terminal 520 of the coaxial cable connector 510 to be contacted.
Furthermore, the outer terminal 710 and the inner terminal 720 are
Each has 3 and 723. Coaxial cable connector
510 is fitted with the mating header connector 700 as shown in FIG. At this time, the outer conductor terminal 530 contacts the outer terminal 710, and the inner conductor terminal 520 contacts the inner terminal 720. As described above, since the annular portion 563 of the coaxial cable connector 510 is disposed with a space provided between the elastic contact piece 531 and the elastic contact piece 531 over the outer periphery of the elastic contact piece 531, the elastic contact piece 531 can be sufficiently bent while excessively deforming. To prevent

Although the preferred embodiment of the present invention has been described above, it is merely an example, and various modifications and changes can be made by those skilled in the art.

[0031]

According to the connector for a coaxial cable of the present invention, a plurality of contact pieces are formed on a receptacle type terminal, and excessive bending of the contact pieces is limited to a precise position on the outer peripheral side of the contact piece. An annular portion is formed.

Therefore, when the contact piece is mated with the mating header connector, the contact piece can be sufficiently elastically bent, so that there is no possibility that a contact failure occurs and a highly reliable connection can be made.
Furthermore, the contact piece is not deformed by an external force applied reluctantly, and a highly reliable connection can be obtained even when inserting and removing a plurality of times.

In addition, since the above-mentioned annular portion is formed integrally with the cover member, an extra assembling step is not required, and the annular portion does not fall off unlike a conventional product.

Further, according to the method for manufacturing a coaxial cable connector of the present invention, the structure for protecting the end of the coaxial cable and the connector can be manufactured by a relatively simple process, and is particularly suitable for automation. Furthermore, since the portion surrounding the connector and the annular portion can be integrally formed from a single metal plate, efficiency is improved not only in terms of workability but also in terms of economy.

[Brief description of the drawings]

1A and 1B are diagrams showing a coaxial cable connector according to a preferred embodiment of the present invention together with a coaxial cable, wherein FIG.
(B) is a side view, (c) is a longitudinal sectional view.

FIGS. 2A and 2B are views showing a first subassembly manufactured in a first stage of a manufacturing process of the connector of FIG. 1; FIG.
(B) is a sectional view taken along line AA in (a), and (c) is a sectional view taken along line BB in (a).

3A and 3B are diagrams showing a second subassembly manufactured in a second stage of the manufacturing process of the connector of FIG. 1 together with a coaxial cable, wherein FIG. 3A is a plan view and FIG. 3B is a longitudinal sectional view.

4A and 4B are diagrams showing a header connector fitted with the coaxial cable connector of FIG. 1, wherein FIG. 4A is a plan view, and FIG. 4B is a side view of the inner terminal along line DD in FIG. FIG.

FIG. 5 is a partial cross-sectional view showing the inner conductor and the coaxial cable as a side view showing a fitted state of the coaxial cable connector of FIG. 1 and the header connector of FIG. 4;

6 (a) is a plan view and FIG. 6 (b) is a side view showing a second subassembly manufactured in a second step of manufacturing a coaxial cable connector according to another preferred embodiment of the present invention. (C) is a sectional view taken along line AA in (b).

FIG. 7 is a longitudinal sectional view when a coaxial cable is attached to the second subassembly of FIG. 6;

FIG. 8 is a longitudinal sectional view showing a completed state of the coaxial cable connector manufactured from the second subassembly of FIG. 6;

9A and 9B are views showing a header connector that can be fitted with the coaxial cable connector of FIG. 8, wherein FIG. 9A is a plan view, FIG. 9B is a side view when viewed from the direction of arrow C in FIG. (C)
(A) is a sectional view along the center line DD.

FIG. 10 is a sectional view showing a fitted state of the coaxial cable connector of FIG. 8 and the header connector of FIG. 9;

[Explanation of symbols]

 20, 520 Terminal for internal conductor 25, 525 Connection part 30, 530 Terminal for external conductor 31, 531 Contact piece 40, 50, 540, 550 Dielectric part 60, 560 Cover member 63, 563 Annular part 70 First sub-assembly 80, 580 Second subassembly 100 Coaxial cable 110 Inner conductor 120 Outer conductor

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H01R 24/02 H01R 9/05 H01R 43/00

Claims (2)

(57) [Claims] 1. A inner conductor terminal and the outer conductor terminal to be connected with each of the inner and outer conductors of the coaxial cable, parallel
Beauty has a metallic cover member, a coaxial cable which constitutes the connecting portion of the mating connector of the outer conductor terminal to the receptacle comprising a plurality of resilient contact pieces
The cover member has a bottom surface on which an annular portion is integrally formed.
A coaxial cable connector comprising a plate, a front plate, and a top plate integrally , wherein the annular portion is arranged on the outer periphery of the connection portion with a space provided between the annular portion and the elastic contact piece. 2. A step of fixing a terminal for an internal conductor and a terminal for an external conductor to a dielectric portion to form a first subassembly, and a substantially plate-like shape extending substantially linearly on one surface of the first subassembly. Attaching a cover member to form a second sub-assembly; connecting an end-treated coaxial cable to the internal conductor terminal and the external conductor terminal; bending the cover member in a longitudinal direction; And forming the cover member so that the cover member surrounds the dielectric portion from above and below.