JPH0439672Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a coaxial connector for connecting a coaxial cable to various devices.

[Conventional technology]

Coaxial connectors connect coaxial cables to various electronic devices such as televisions, and are used in various fields. As a coaxial connector like this,
For example, there is one shown in Japanese Utility Model Publication No. 56-51664.

To explain the general schematic structure of such a conventional coaxial connector, first, a holding part is provided that holds the coaxial cable with the exposed external conductor from the outside, and the inside of the coaxial cable held by the holding part is The core wire is fastened with fastening means such as screws, and the inner core wire is brought into contact with the inner conductor by soldering.

Further, the fastening means and the inner conductor are held by a holding portion made of an insulating material. Further, the outer cylindrical conductor portion having the inner conductor held therein by the holding means and the outer conductor of the coaxial cable are electrically connected via the aforementioned clamping portion and another soldered member. There is.

The holding part, the holding part, and the outer cylindrical conductor part are attached to a lower cover made of an insulating material, and the upper cover is covered above with an upper cover also made of an insulating material.

[The problem that the idea aims to solve]

However, in the case of the above-mentioned coaxial connector, since each member is formed separately, the assembly work becomes complicated, reducing work efficiency and reducing reliability regarding assembly accuracy. This makes it difficult to achieve cost reductions.
In particular, for the inner conductor and outer cylindrical conductor,
Assembling must be performed using soldering, and a considerable amount of man-hours are spent on positioning and fixing these members.

The present invention has been made in view of the above circumstances, and its purpose is to provide a coaxial connector that can improve workability when assembling each member.

[Means to solve the problem]

As a means for solving the above problems, in the first invention, hinge parts are provided between the holding part and the lower cover, and between the lower cover and the upper cover, and these parts are integrally formed. There is a structure.

The following three configurations can be added to the configuration of the first invention.

That is, as a second idea, it is possible to adopt a structure in which the holding part and the outer cylindrical conductor part are integrally formed.

In addition, as a third invention, the fastening means is composed of a screw member and a presser plate attached to the screw member, and a threaded portion for screwing the screw member is formed on the holding portion, and further, The base end of the conductor may be provided with a contact portion that comes into contact with the internal core wire of the coaxial cable while enclosing the screw member.

And, as the fourth idea, after pinching,
It is also possible to adopt a configuration in which a concavo-convex portion for restraining displacement of the coaxial cable in the axial direction and a locking protrusion for restraining rotation of the coaxial cable are provided.

[Effect]

In the configuration of the first invention, since the upper cover and the holding part are integrally formed through the hinge parts, the upper cover and the holding part can be attached to the lower cover depending on the order of assembly work. It can be placed in an upright position or in a laid down position, and the work of positioning each member relative to each other at that time becomes unnecessary.

In the configuration of the second invention, since the holding part and the outer cylindrical conductor part are integrally formed, they can be attached to the lower cover at the same time, and there is also a No separate work required.

In the configuration of the third invention, since the contact portion of the inner conductor is in a state of enclosing the screw member,
The inner conductor and the inner core wire can be brought into contact in the immediate vicinity of the position where the screw member tightens the inner core wire of the coaxial cable.

In the configuration of the fourth invention, both the concavo-convex portion and the locking protrusion work together to prevent the coaxial cable from shifting in the axial direction and in the rotational direction.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing the internal structure of the coaxial connector according to this embodiment.

In FIG. 1, C is a coaxial cable having an outer conductor C ₁ and an inner core C ₂ . To explain the general structure of this coaxial connector, first, a container 1 made of an insulating material such as plastic is integrally formed with a lower cover 2, an upper cover 3, and a holding part 4. The lower cover 2 includes a holding part 6, a side shield part 7, and an outer cylindrical conductor part 8.
An upper shield plate 9 is attached to the inner surface of the upper cover 3.

The holding portion 4 holds a taptight screw 10 and a presser plate 11 as fastening means, and the internal core wire _C2 is fastened by these. Further, an inner conductor 12 held by the holding part 4 is disposed inside the outer cylindrical conductor part 8, and this inner conductor ₁₂ is in contact with the inner core wire C2.

Next, each member constituting the present coaxial connector will be explained in more detail.

2 to 14 are diagrams for explaining the container 1, and FIGS. 2 and 3 are perspective views showing the internal structure of the container 1 when the holding part 4 is raised and folded down, respectively. It is.

A hinge part 1 is provided between the lower cover 2 and the holding part 4.
A hinge portion 14 is provided between the lower cover 2 and the upper cover 3, and the lower cover 2, the upper cover 3, and the holding portion 4 are integrally formed.

The lower cover 2 and the upper cover 3 are formed with half-crack holes 15 and 16 through which the coaxial cable C is inserted, and as shown in FIG. When the cover 3 is tilted toward the lower cover 2, the claw portion 17 engages with the engagement step portion 18.

Further, the holding portion 4 is also provided with a claw portion 19, and when the holding portion 4 is in a fallen state, the claw portion 19 engages with an engagement hole 20 provided in the lower cover 2.
The lower cover 2 is provided with a hole 21 into which the outer cylindrical conductor part 8 is fitted, and support protrusions 22 and 23 which support the holding part 6. These support protrusions consist of one support protrusion 22 in the center and two support protrusions 23 having a larger height arranged on both sides of the support protrusion 22 (see FIG. 9).

A flat mounting surface 24 is formed on one side (the side shown in FIG. 3) of the holding portion 4, and side walls 25 and ribs 26 are provided on both sides of the mounting surface 24. Note that one side of the side walls 25 on both sides is slightly larger in height than the other side. This is to prevent the presser plate 11 from rotating due to the rotation of the tap-tight screw 10 even when the presser plate 11 is located on the upper end surface of the side wall 25 having a lower height. On the mounting surface 24,
A threaded portion 27 formed by screwing the taptight screw 10 (this threaded portion is not formed before assembly) and a substantially T-shaped holding hole 28 for holding the inner conductor 12 are provided. .

An annular frame 29 is formed on the other side (the side shown in FIG. 2) of the holding portion 4, and a holding seat 30 having a generally gourd-shaped cross section is formed inside the annular frame 29. The holding hole 28 is opened in the bottom surface of the holding seat 30, and the opening shape is T.
It has a rectangular shape rather than a letter shape. In other words,
As shown in FIG.
Although the side has a hole 28a and a hole 28b, by forming a tapered surface 28c, the holding seat 30
On the bottom side of the hole 28a, as shown in FIG.
Only the opening is open.

Further, as shown in FIG. 14, the threaded portion 27
is constituted by a screw hole 27a and a relief portion 27b. This relief part 27b, as described later,
This is to prevent displacement of the holding hole 28 due to rotation of the taptight screw 10.

Two protrusions 31 are provided on the inner surface of the upper cover 3 to attach the upper shield plate 9.

Next, the structure of the metal fitting 5 will be explained in detail based on FIGS. 15 to 17. As mentioned above, this metal fitting 5
The holding part 6, the side shield part 7, and the outer cylindrical part 8 are integrally formed. As shown in FIG. 17b, the thickness t ₁ of the outer cylindrical conductor portion 8 is 0.3t, and the thickness t ₂ of the other portions is 0.5t. Further, the outer diameter φA of the outer cylindrical conductor portion 8 is φ10.8.

The upper end 6a of the holding part 6 is formed into a saw shape to ensure contact with the outer conductor _C1 of the coaxial cable C. Further, a cut-out portion 6b is provided to make it easier to bend the upper end portion 6a toward the outer conductor _C1 and to make it easier to hang a tool such as pliers. Further, a groove 6c is formed on the outer surface, and thereby a recess 6d and a protrusion 6e for restraining displacement of the coaxial cable C in the axial direction are formed on the inner surface. A locking protrusion 6f for restraining the rotation of the coaxial cable C is provided at the side end. Although not shown in the drawings, both ends of the convex portion 6e are shaped to protrude further toward the inside (toward the coaxial cable C side). This is because this further protruding portion applies a strong pressing force to the coaxial cable C while the coaxial cable C is being held.

A cylindrical spring 32 is provided on the inner surface side of the outer cylindrical conductor portion 8.
(See Figs. 15 and 16). This cylindrical spring 32 is intended to facilitate smooth connection when the present coaxial connector is connected to a mating connector member, that is, a connector member on the side of an electronic device. The inner diameter portion φB of the contact piece 32a is formed to a value corresponding to the outer diameter of the mating connector member, for example, φ9.52.

Moreover, the hole 33 provided between the holding part 6 and the outer cylindrical conductor part 8 is a hole through which the claw part 19 of the holding part 4 passes.

18a, b, and c are a plan view, a front view, and a side view of the upper shield plate 9. FIG. This upper shield plate 9 has a mounting surface 34 formed on the inner surface of the upper cover 3.
(see FIG. 4), and the notch 9a is engaged with the protrusion 31.

FIGS. 19a, b, and c are plan views of the inner conductor 12,
They are a front view and a side view. A contact portion 12a having a shape capable of holding the taptight screw 10, that is, a substantially U-shaped contact portion 12a, is formed at the base end of the inner conductor 12. A held portion 12b, which is held in the holding hole 28 of the holding portion 4 described above, extends from the inside of the contact portion 12a, and furthermore, a pin portion 12c is provided at the tip thereof. In addition, the held portion 12b
A gently sloping protrusion 12d is formed therein. This is to prevent the inner conductor 12 from wobbling due to a slight gap between the held part 12b and the inner wall of the holding hole 28, and to enable fixation by press-fitting. belongs to.

Next, a procedure for assembling the coaxial connector of this embodiment constructed as described above will be explained.

First, the upper cover 3 and the holding part 4 of the container 1 are
Raise it as shown in FIG. 2 and attach the metal fittings 5 shown in FIG. 15 to the lower cover 2. That is, hole 21
The outer cylindrical conductor portion 8 is inserted through the holding portion 6, and the holding portion 6 is placed on the support protrusion 23. In this state, the bottom surface of the holding portion 6 is in contact with the two support protrusions 23 on both sides, as shown in FIG. 24, and is supported in a stable state. Note that, at this time, it is assumed that the cylindrical spring 32 is already installed inside the inner conductor section 8.

Then, the holding part 4 is tilted toward the lower cover 2, and the claw part 19 is engaged with the engagement hole 20. Thereby, the metal fitting 5 can be reliably attached to the container 1.

Next, as shown in FIG. 20, the inner conductor 12
into the holding hole 28. In this case, as shown in FIG. 21, if the tip of the pin part 12c is inserted through the hole 28b, the dimensions of the hole 28b will be
2c, and since the tapered part 28c guides the pin part 12c, the pin part 12c is inserted into the hole 2.
8a can be easily inserted at a constant angle. Although the thickness of the hole 28a is small, the formation of the hole 28b facilitates mold production.

Then, the taptight screw 10 to which the holding plate 11 is attached is temporarily fixed to the threaded portion 27.
At this time, since side walls 25 are provided on both sides of the presser plate 11 (as described above, one side is larger in height than the other side), the presser plate 11 is attached to the tap-tight screw 10. It won't cause you to spin around.

Thereafter, the coaxial cable C with the external conductor C ₁ exposed is inserted into the inside through the half-crack hole 15 of the lower cover 2, the exposed external conductor C ₁ is positioned inside the clamping part 6, and the internal core wire is Insert C ₂ between the contact portion 12a and the holding plate 11.

In this state, when the temporarily tightened taptight screw 10 is further rotated, the internal core wire C ₂
is strongly pressed by the holding plate 11, and the internal core wire
C ₂ and the contact portion 12a are securely brought into contact with each other.

By the way, the cross-sectional shape of the tap-tight screw 10 is not circular like a normal screw, but is formed into a substantially triangular rice ball shape as shown by the two-dot chain line in FIG. This is to make it easier to form the threaded portion in the resin material, as is well known. The diameter of the tap-tight screw 10 is larger than the diameter of the screw hole 27a. Therefore, as the tap-tight screw 10 is rotated, the shape of the screw hole 28a also changes and widens accordingly. As a result, this deformation also affects the inner conductor 12 held in this vicinity. In other words, at the end of the tightening work of the taptight screw 10, the screw hole 28a has expanded greatly.
The position of the holding hole 28 is shifted, and therefore,
The position of the pin portion 12c will also shift.
The relief portion 27b is provided to prevent such an influence, and thereby, even if the screw hole 27a is pushed and expanded by the rotation of the taptight screw 10, the position of the pin portion 12c will be shifted. This can be prevented. Note that this relief portion 27b is
As shown in FIG. 22, it is not necessary to provide a part of the screw hole 27a; if there is sufficient space, for example, as shown in FIG. They may be provided separately.

As mentioned above, after the internal core wire C ₂ is brought into secure contact with the contact portion 12a using the taptight screw 10,
The upper ends 6a, 6a of the clamping part 6 are bent to firmly clamp the coaxial cable C. In this state, the bottom surface of the holding portion 6 is supported by one support protrusion 22 at the center, as shown in FIG.

In this way, when the holding part 6 holds the coaxial cable C, the convex part 6e strongly contacts the external conductor _C1 or the insulator and acts to restrain the displacement of the coaxial cable C in the axial direction. Latching protrusion 6f
Since it bites into the outer conductor _C1 or the inside of the insulator, it works to restrict the rotation of the coaxial cable C. In this case, according to the inventor's prototype research,
For both axial displacement restriction and rotation restriction, it is more effective to provide both the uneven portions 6d and 6e and the locking protrusion 6f.If only one of them is provided, the axial direction It has been found that the effects of both displacement restraint and rotation restraint are halved. That is, the functions of both the concavo-convex portions 6d, 6e and the locking protrusion 6f can effectively restrain the axial displacement and rotation of the coaxial cable C.

Next, the coaxial cable C is attached to the holding part 6 in this way.
After the upper shield plate 9 is clamped, the upper shield plate 9 is attached to the inner surface of the upper cover 3. Then, fold down the upper cover 3 toward the lower cover 2, and insert the claw portion 17 into the engaging stepped portion 1.
8, the assembly work is completed. Note that at this time, the upper shield plate 9 is in contact with the side shield portion 7 and is in an electrically conductive state.

The above series of assembling operations requires that the holding part 6 and the outer cylindrical conductor part 8 are integrally formed, and that the lower cover 2, the upper cover 3, and the holding part 4 are connected via the hinge parts 13 and 14. Since it is integrally formed, it can be carried out continuously and quickly. The content of the work does not include work that requires time and skill, such as soldering, and is only simple work. Thereby, when automating the assembly work, automatic machines and the like can be easily introduced into the process line.

Further, since the inner conductor 12 is provided with the contact portion 12a and the contact portion 12a is configured to hold the taptight screw 10, the inner conductor 12 and the taptight screw can be provided close to each other, which is advantageous in terms of space. It's summery.

Furthermore, the clamping portion 6 is provided with the projections 6d and 6e and the hooking projections 6f, so that the coaxial cable C
It is possible to clamp the material securely and firmly.

Note that the outer conductor C ₁ of the coaxial cable C is electrically connected to the outer cylindrical conductor portion 8 via the clamping portion 6 to be grounded. In this case, the clamping part 6 clamps the coaxial cable C from the outside of the outer conductor C ₁ with good adhesion, and the clamping part 6 and the outer cylindrical conductor part 8 are integrally formed. Therefore, the grounding of the external conductor _C1 is also more secure. Furthermore, since the area of the portion connecting the holding portion 6 and the outer cylindrical conductor portion 8 is also large, the high frequency transmission characteristics are further improved.

[Effect of idea]

As described above, according to the first invention, since the lower cover, the upper cover, and the holding part are integrally formed through the hinge part, it is easier to assemble each member. can be done.

According to the second invention, since the holding part and the outer cylindrical conductor part are integrally formed, the assembly work can be carried out quickly, and work such as soldering becomes unnecessary.

Further, according to the third invention, the fastening means is constituted by a screw member and a presser plate, and the contact portion provided on the inner conductor surrounds the screw member, so that miniaturization can be achieved. , which is also advantageous in terms of space.

According to the fourth invention, the uneven part for restraining the axial displacement of the coaxial cable and the latching protrusion for restraining the rotation of the coaxial cable are provided, so that the coaxial cable can be made even more flexible. Can be held securely and firmly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIGS. 2 and 3 are perspective views for explaining the structure of a container, which is a part of FIG. 1, and FIG.
Top view of the container shown in Figures and Figures 3, No. 5
The figure is a side view of FIG. 4, and FIGS. 6 to 10 are the - line, - line, and - line in FIG. 4, respectively.
11 is a partial enlarged view of FIG. 6, FIG. 12 is a partial enlarged view of the part in FIG. 11, and FIG. 13 is a partial enlarged view of FIG. 2 and 3. 14 is a partially enlarged view of FIG. 13, FIG. 15 is a perspective view showing the structure of the metal fitting that is a part of FIG. 1, and FIG. 16 is attached to the metal fitting shown in FIG. 15. Figures 17a, b, and c are plan views of the metal fittings shown in Figure 15, and Figures 18a, b, and c are parts of the parts shown in Figure 1, respectively. The plan view, front view, and side view of the upper shield plate, and FIG. It is an explanatory view for explaining the procedure of assembly work. C... Coaxial cable, C ₁ ... Outer conductor, C ₂ ...
...Internal core wire, 2...Lower cover, 3...Top cover, 4...Holding part, 6...Clip part, 6d...Concave part, 6e...Protrusion, 6f...Latching protrusion, 8... …
Outer cylindrical conductor, 10, 11... Fastening means (tap tight screw, holding plate), 12... Inner conductor, 12
a...Contact part, 13, 14...Hinge part, 28...
...Screw part.

Claims (1)

[Claims for Utility Model Registration] 1. A clamping part that clamps a coaxial cable with an exposed outer conductor from the outside of the outer conductor, and a clamp that clamps the inner core wire of the coaxial cable clamped by the clamping part. means; an inner conductor in contact with the internal core wire fastened to the fastening means; a holding part that holds the fastening means and the inner conductor and is formed of an insulating material; and a holding part that is held by the holding part. an outer cylindrical conductor part having an inner conductor disposed therein and electrically connected to the outer conductor of the coaxial cable via the clamping part; and the clamping part, the holding part, and the outer cylindrical conductor part are attached. A coaxial connector comprising: a lower cover made of an insulating material; an upper cover covering an upper part of the lower cover and made of an insulating material; between the holding part and the lower cover; A coaxial connector characterized in that a hinge portion is provided between the lower cover and the upper cover, and these are integrally formed. 2. The coaxial connector according to claim 1, wherein the holding portion and the outer cylindrical conductor portion are integrally formed. 3. The fastening means is composed of a screw member and a presser plate attached to the screw member, and a screw portion for screwing the screw member is formed in the holding portion, and the base end of the inner conductor is 2. The coaxial connector according to claim 1, further comprising a contact portion that contacts the internal core wire of the coaxial cable while holding the screw member. 4. The clamping part is provided with an uneven part for restraining displacement of the coaxial cable in the axial direction after clamping, and a locking protrusion for restraining rotation of the coaxial cable. Claim 1
Coaxial connector listed.