JP3029012B2 - Coaxial cable 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 cable connector attached to a free end of a coaxial cable.

[0002]

2. Description of the Related Art Conventionally, as shown by reference numeral 1 in FIG. 6, (a) a center conductor 2, (b) an insulator 3 having an annular cross section disposed therearound, and (c). An outer conductor 4 having an annular cross section disposed around the outer conductor 4, and the free end face 3 a of the insulator 3 and the free end face 4 a of the outer conductor 4 The coaxial cable, which has been subjected to the terminal treatment so as to be sequentially lowered to the other free end side (not shown) opposite to the free end portion 5 side as viewed from the distal end 2a, has a coaxial cable connector. It has been proposed as a coaxial cable to be attached.

[0003] Conventionally, there has been proposed a coaxial cable connector to be attached to the above-described coaxial cable 1 as shown in FIGS.

[0004] This coaxial cable connector has a conductive cylinder 10 as a connector housing, and the cylindrical body 10 comprises (a) an insulator 3 of the coaxial cable 1.
Inner surface 11a and cylindrical outer surface 11 having diameters substantially equal to the outer diameter of
b, and a cylindrical inner surface 12a having a diameter substantially equal to the outer diameter of the outer conductor 4 of the coaxial cable 1 (b).
And (c) a diameter substantially equal to or slightly smaller than the diameter of the cylindrical inner surface 12a of the cylindrical portion 12. The cylindrical cylindrical portion 12 has a cylindrical outer surface 12b having a diameter larger than the diameter of the cylindrical outer surface 11b of the cylindrical portion 11. A cylindrical shape having a conical inner surface 13a having a diameter that gradually changes from a large diameter (slightly large diameter in the drawing) to a large diameter in the axial direction and a cylindrical outer surface 13b on the maximum diameter side of the conical inner surface 13a. And (d) the cylindrical portions 11, 12 and 13 are:
In that order and with the cylindrical portion 13 oriented such that the smaller diameter side of the inner surface 13a of the cone becomes the cylindrical portion 12 side, their axes are aligned with the common axis 0-0, and they are integrally connected. It has a configuration.

In this case, the cylindrical portion 11 has an annular end face 11c exposed to the outside on the cylindrical portion 12 side and extending in a plane perpendicular to the axis of the cylindrical body 10. In addition, the cylindrical portion 12
It has an annular groove 12d drilled from the outer cylindrical surface 12b toward the inner cylindrical surface 12a. Furthermore, the cylindrical part 1
3 has a screw 13c attached to the cylindrical outer surface 13b, which constitutes a coaxial cable propulsion means 50 described later.

[0006] Further, there is provided a cylindrical body 20 arranged so as to be rotatable around the conductive cylindrical body 10.

The cylindrical body 20 includes: (a) a cylindrical portion 1 of the cylindrical body 10;
A cylindrical inner surface 2 having a diameter larger than that of the first cylindrical outer surface 11b;
1a and a cylindrical tubular portion 21 having a cylindrical outer surface 21b;
(B) A cylindrical inner surface 22 having a diameter substantially equal to or slightly larger than the cylindrical outer surface 12b of the cylindrical portion 12 of the cylindrical body 10.
a and a cylindrical portion 22 having a cylindrical outer surface 22b, and (c) the cylindrical portions 21 and 22
It has a configuration in which the shafts are integrally connected with the common shafts thereof.

In this case, the cylindrical portion 21 has a cylindrical inner surface 21.
It has a female screw 21c attached to a. In addition, the cylindrical portion 22
It has a width that allows it to be the same as the annular groove 12d drilled from the cylindrical inner surface 22a toward the cylindrical outer surface 22b and formed on the cylindrical outer surface 12b of the cylindrical portion 12 of the cylindrical body 10. It has an annular groove 22d and its annular groove 2
The length viewed from 2d toward the cylindrical portion 21 is longer than the length viewed from the annular groove 12d of the cylindrical portion 12 of the cylindrical body 10 toward the cylindrical portion 11 and viewed from the annular groove 22d on the side opposite to the cylindrical portion 21 side. The length is shorter than the length as viewed from the annular groove 12d of the cylindrical portion 12 of the cylindrical body 10 toward the cylindrical portion 13 side.

Then, the cylindrical portion 1 of the cylindrical body 10 having conductivity.
2d annular groove 12d formed on the side of the cylindrical outer surface 21b
The inner diameter is slightly larger than the diameter of the bottom of the annular groove 21d formed in the cylindrical outer surface 21b of the cylindrical body 10 and is formed in the cylindrical inner surface 22a of the cylindrical portion 22 of the cylindrical body 20. A C-shaped elastic body 23 having an outer diameter slightly larger than the diameter of the bottom of the annular groove 22d and a width substantially equal to or slightly smaller than the width of the annular grooves 12d and 22d is previously arranged, and In this state, the cylindrical body 20 is
The elastic body 23 is pressed and shrunk so that the cylindrical portions 11 and 12 of the cylindrical body 10 are inserted into the cylindrical body 20 in the order in which the cylindrical portions 11 and 12 are inserted into the cylindrical groove 20. Is advanced until the elastic body 23 is positioned, so that the cylindrical body 20 can rotate around the cylindrical body 10 with friction between the bottom of the annular groove 22d and the outer surface of the elastic body 23. It is arranged in.

[0010] The coaxial cable gripping / propelling means 50 has a screw 13c attached to the outer peripheral surface 13b of the cylindrical portion 13 of the cylindrical body 10 described above, and another coaxial cable gripping / propelling means 50. And bodies 30 and 40.

In this case, the cylindrical body 30 is (a) gradually formed on the inner surface of the cylinder having a diameter substantially equal to or slightly smaller than the outer diameter of the outer conductor 4 of the coaxial cable 1, for example, gradually from the small diameter in the axial direction. The inner surface 3 that is subjected to unevenness processing so that the inner surface having a diameter that changes to a large diameter and then changes to the initial diameter becomes an inner surface that is repeatedly arranged in the axial direction.
0a and (b) from the diameter substantially equal to or slightly smaller than the minimum diameter of the conical inner surface 13a of the cylindrical portion 13 of the cylindrical body 10, slightly larger than the maximum diameter of the conical inner surface 13a of the cylindrical portion 13 in the axial direction. The conical outer surface 30b has a diameter that gradually changes linearly and gradually to a larger diameter with a slightly larger change rate than the case of the conical inner surface 13a up to the diameter, and (c) extends on a surface orthogonal to the axis of the cylindrical body 30. The inner annular surface portion 31a and the conical outer surface 30b of the cylindrical body 30 in the axial direction from the diameter of the outer end thereof.
An outer conical surface portion 31b having a diameter that varies until reaching the conical outer surface 30b to a gradually larger diameter in a direction toward the side where the diameter of the conical outer surface 30b of the cylindrical body 30 is larger. And (d) a split (not shown) extending parallel to the axis between both end faces.

The cylindrical body 40 has a cylindrical shape (a) having an inner surface 41a provided with a female screw 41c capable of screwing with a screw 13c provided on the cylindrical portion 13 of the cylindrical body 10 and a cylindrical outer surface 41b. (B) From the diameter substantially equal to or slightly larger than the inner surface 41a of the cylindrical portion 41, the diameter gradually decreases in the axial direction at the same rate of change as the conical surface portion 31b of the end surface 31 of the cylindrical body 30. The inner diameter of the conical inner surface portion 42c having a diameter that is changed to be equal to or slightly smaller than the inner diameter of the annular surface portion 31a of the end surface 31 of the cylindrical body 30, and the same diameter as the minimum diameter of the conical inner surface portion 42c Cylindrical inner surface 42d having
A cylindrical portion 42 having an inner surface 42a and a cylindrical outer surface 42b capable of engaging with the aforementioned conical surface portion 31b of the end surface 31 on the largest diameter side on the conical outer surface 30b side of the cylindrical body 30, and (C) The cylindrical portions 41 and 42 are used to connect the cylindrical portion 42 to the cylindrical inner surface 42 d of the inner surface 42 a of the cylindrical portion 41.
It has a configuration in which the shafts are integrally connected in a direction opposite to the side, with their axes coinciding with the axes common to them.

The configuration of the conventionally proposed coaxial cable connector has been clarified. According to the conventional coaxial cable connector having such a configuration, FIG.
As shown in the figure, the coaxial cable 1 is formed around the outer conductor 4 of the free end portion 5 on which the terminal processing is performed, by forming a cylindrical body 40 constituting the coaxial cable gripping promotion means 50 into a cylindrical part 41. The coaxial cable 1 can be arranged in a direction on the tip 2 a side of the center conductor 2, and in this state, the outer conductor 4 of the free end 5 of the coaxial cable 1, which has been subjected to the terminal treatment, is formed. Around the circumference, the cylindrical body 30 constituting the coaxial cable grasping / propelling means 50 may be arranged in such a direction that the minimum diameter side of the conical outer surface 30b is located on the tip 2a side of the center conductor 2 of the coaxial cable 1. it can.

In a state where the cylindrical bodies 40 and 30 are arranged around the free-end portion 5 on which the terminal treatment of the coaxial cable 1 is performed, the free-end portion 5 of the coaxial cable 1 is moved to the center thereof. From the distal end 2a side of the conductor 2 into the conductive cylindrical body 10, from the cylindrical part 13 side, (a) the distal end 2a of the center conductor 2 of the free end 5 of the coaxial cable 1 is connected to the cylindrical part of the cylindrical body 10. (B) a portion from the position of the free end surface 4a of the outer conductor 4 of the insulator 3 at the free end portion 5 of the coaxial cable 1 to the end surface 3a of the insulator 3 (C) the outer conductor 4 at the free end 5 of the coaxial cable 1 is positioned within the cylindrical portions 12 and 13 of the cylindrical body 10, and (d) the outer conductor 4 of the coaxial cable 1. Free end face 4a
Can be inserted in such a state that it is in contact with or close to the annular end face 11c of the tubular portion 11 of the tubular body 10.

Further, from such a state, the main screw 41c of the cylindrical portion 41 of the cylindrical body 40 is connected to the coaxial cable gripping and pushing means 50.
The cylindrical body 40 is screwed into the screw 13c of the cylindrical part 13 of the cylindrical body 10 so as to enter into the main thread 41c of the cylindrical part 41 of the cylindrical body 40, thereby connecting the cylindrical body 40 to the cylindrical body 10 Can be propelled to the cylindrical portion 11 side. In addition, thereby, the conical inner surface portion 42c of the inner surface 42a of the cylindrical portion 42 of the cylindrical body 40 is connected to the conical surface portion 31b of the end surface 31 of the cylindrical body 30 constituting the coaxial cable gripping promotion means 50. The cylindrical body 30 is brought into contact with the side opposite to the end face 31 side.
Can be propelled toward the tubular portion 11 of the tubular body 10.
Further, at this time, the conical outer surface 30b of the cylindrical body 30 is
0 engages with the conical inner surface 13a of the cylindrical portion 13, while the cylindrical body 3
When 0 has a split, the cylindrical body 30 is pressed and shrunk so as to reduce the inner diameter, and the outer conductor 4 of the coaxial cable 1 is clamped from the outside. For this reason, the coaxial cable 1 is propelled into the cylindrical body 10 toward the cylindrical portion 11, thereby, as shown in FIG.
The free end face 4a of the outer conductor 4 is connected to a cylindrical body 10 having conductivity.
The outer conductor 4 of the coaxial cable 1 can be brought into a state of being electrically connected to the conductive cylindrical body 10 by being pressed against the annular inner surface 11c of the cylindrical portion 11. If such a state is obtained, the cylindrical body 10
The free end 5 of the coaxial cable 1 together with the cylinders 30 and 40
It will be in the state of being fixed and attached to the.

Further, from such a state, the center conductor 2 of the coaxial cable 1 and the tubular portion 11 of the conductive tubular body 10 are not described in detail, but the central conductor and the external conductor of another external coaxial cable are omitted. Can be connected using a cylinder 20 that is arranged to be rotatable around the cylinder 10.

As described above, according to the conventional coaxial cable connector shown in FIGS. 6 to 8, the coaxial cable 1 is connected to the coaxial cable 1 at the free end 5 where the terminal processing is performed. The outer conductor 4 can be mounted so that it can be connected to the outside via the conductive cylindrical body 10 and the center conductor 2 of the coaxial cable 1 can be directly connected to the outside. And it can function as a connector which connects the external conductor 4 to the outside.

[0018]

In the case of the conventional coaxial cable connector shown in FIGS. 6 to 8, as described above, the connector is connected to the outer peripheral surface 13 of the tubular portion 13 of the tubular body 10 having conductivity.
By using the coaxial cable gripping and propelling means 50 composed of the screw 13c attached to b and the cylinders 30 and 40, the coaxial cable 1 can be fixedly attached to the free end portion 5 of the coaxial cable 1, and In this case, the free end surface 4a of the outer conductor 4 of the coaxial cable 1 can be brought into pressure contact with the annular end surface 11c of the cylindrical portion 11 of the cylindrical body 10, but (a) the outer side of the coaxial cable 1 as described above. In a state where the free end face 4a of the conductor 4 is pressed against the annular end face 11c of the cylindrical portion 11 of the cylindrical body 10, the free end face 4 of the outer conductor 4 of the coaxial cable 1 is pressed.
It is practically difficult to obtain a state in which a is pressed against the annular end face 11c of the cylindrical portion 11 of the cylindrical body 10 at any position over the entire area of 360 ° from the axis of the coaxial cable 1. (B) the free end surface 4a of the outer conductor 4 of the coaxial cable 1 is connected to the annular end surface 11 of the cylindrical portion 11 of the cylindrical body 10;
In the state of being pressed against c, the pressure, vibration, heat stress, and the like are unnecessarily applied from the outside, and the cylindrical portion 13 of the conductive cylindrical body 10 that constitutes the coaxial cable gripping promotion means 50. Screw 13c and the main screw 13 of the cylindrical body 40
The cylindrical body 30 constituting the coaxial cable grasping / propelling means 50 is screwed with the cylindrical body 1 to form the cylindrical portion 1 of the conductive cylindrical body 10.
(1) If the loose end of the outer conductor 4 of the coaxial cable 1
a is the annular end face 1 of the cylindrical portion 11 of the cylindrical body 10 having conductivity.
In the state where the contacting state is in contact with the coaxial cable 1, the free end face 4 a of the outer conductor 4 of the coaxial cable 1 is connected to the free end face 4 a of the coaxial cable 1. At any position over the entire area of 360 ° from the axis, there is a case where the cylinder is not in pressure contact with the annular end face 11c of the cylindrical portion 11 of the cylindrical body 10 having conductivity. For this reason, the frequency-attenuation characteristic of the high-frequency signal transmitted to the coaxial cable 1 when functioning as the above-described connector can be obtained only as a notch as shown in FIG. There was a disadvantage that there is no.

Thus, the present invention is free from the disadvantages mentioned above,
It is intended to propose a new coaxial cable connector.

[0020]

A coaxial cable connector according to the present invention has a center conductor and an annular cross-section disposed therearound similarly to the conventional coaxial cable connector described above with reference to FIGS. And an outer conductor having an annular cross section disposed around the insulator, and one free end portion of the insulator has a free end surface of the insulator and a free end surface of the outer conductor sequentially viewed from the tip of the center conductor. A connector for a coaxial cable which is attached to a coaxial cable which is terminated so as to be located at a position lowered to the other free end side, at the free end portion which is subjected to the terminal treatment, wherein (i) (a A) a first cylindrical portion having a cylindrical inner surface having a diameter substantially equal to the outer diameter of the insulator of the coaxial cable; and (b) a cylindrical inner surface having a diameter substantially equal to the outer diameter of the outer conductor of the coaxial cable. A second cylindrical portion having a cylindrical shape, c) A cylindrical third cylinder having a conical inner surface having a diameter that changes from a diameter substantially equal to or slightly larger than the cylindrical inner surface of the second cylindrical portion linearly and gradually to a larger diameter in the axial direction. (D) the first, second, and third cylinders are arranged in the same order with their axes aligned with each other, and the third cylinder is reduced in diameter with a small inner surface of the cone. A first cylindrical body integrally connected in a direction in which the side is the second cylindrical portion side, and having conductivity;
(Ii) (a) a screw attached to the outer peripheral surface of the third cylindrical portion of the first cylindrical body, and (b) approximately equal to or slightly larger than the outer diameter of the outer conductor of the coaxial cable. It has an inner surface on which a concave and convex processing is performed on a cylindrical inner surface having a diameter, and a conical outer surface which can engage with a conical inner surface of the third cylindrical portion of the first cylindrical body, and extends between both end surfaces. A cylindrical second cylinder having a split; (c) a fourth cylinder having an inner surface provided with a female screw screwed with the screw; and a maximum of the conical outer surface of the second cylinder. A third cylindrical body having a fifth cylindrical portion having an inner surface capable of engaging with the radial end surface; and a third cylindrical body having a cylindrical shape.

However, the connector for a coaxial cable according to the present invention, in the connector for a coaxial cable having such a configuration, (iii) has a diameter substantially equal to or slightly larger than the outer diameter of the insulator of the coaxial cable. Having an inner peripheral surface having a diameter substantially equal to or slightly smaller than the diameter of the cylindrical inner surface of the second cylindrical portion of the first cylindrical body, and having elasticity or elasticity. When the coaxial cable connector is attached to the free-ended end of the coaxial cable, the first coaxial cable surrounds the insulator at the free-ended end of the coaxial cable. And disposed between the annular end surface of the first cylindrical portion exposed to the outside of the second cylindrical portion of the first cylindrical portion and the free end surface of the outer conductor of the coaxial cable. To Having conductive annulus.

According to the connector for a coaxial cable according to the present invention, as in the case of the conventional connector for a coaxial cable shown in FIGS. The coaxial cable can be fixedly attached so that the outer conductor of the coaxial cable can be connected to the outside via the conductive first cylindrical body and the center conductor of the coaxial cable can be directly connected to the outside. Can be made to function as a connector for connecting the center conductor and the outer conductor to the outside.

In the case of the coaxial cable connector according to the present invention, the conductive ring is elastically or elastically mounted in a state where the coaxial cable is fixedly attached to the free-ended end of the coaxial cable. Since it has a pressure property, it can be securely pressed against the free end surface of the outer conductor of the coaxial cable and the annular end surface of the first cylindrical portion of the first cylindrical body at any position in the entire area viewed from the axis of the coaxial cable. Can be obtained. The state is such that pressure, vibration, heat stress, etc. are unnecessarily given from the outside, or the screw of the third cylinder of the first cylinder constituting the coaxial cable gripping and propulsion means is connected to the second cylinder. The second cylindrical body constituting the coaxial cable gripping / propelling means is propelled toward the first cylindrical portion side of the first cylindrical body by being screwed with the mother screw of the third cylindrical body. Does not substantially change. For this reason, in view of the frequency-attenuation characteristic of the high-frequency signal transmitted to the coaxial cable when functioning as the above-described connector, it can be favorably obtained without a large notch.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a coaxial cable connector according to the present invention will be described with reference to FIGS.

In FIG. 1 to FIG. 3, parts corresponding to those in FIG. 6 to FIG.

The coaxial cable connector according to the present invention shown in FIGS. 1 to 3 has the same structure as that shown in FIGS.
Has the same configuration as the conventional coaxial cable connector shown in FIG.

That is, the inner peripheral surface 60 having a diameter substantially equal to or slightly larger than the outer diameter of the coaxial cable 1.
a and the cylindrical inner surface 12 of the cylindrical portion 12 of the cylindrical body 10 having conductivity
The outer peripheral surface 60b having a diameter substantially equal to or slightly smaller than the diameter of the outer peripheral surface 60a and having elasticity or elasticity, and the coaxial cable connector has been subjected to the above-described terminal treatment of the coaxial cable 1. When attached to the free end 5, the cylindrical portion 12 of the cylindrical portion 11 of the cylindrical body 10 surrounds the insulator 3 at the free end 5 where the coaxial cable 1 has been subjected to the terminal treatment.
Annular end face 11c exposed on the outer surface on the side and outer conductor 4
The conductive ring 60 is disposed so as to be interposed between the free end surface 4a and the free end surface 4a.

In this case, the conductive ring 60 is formed as shown in FIGS.
4A, one end surface 60c is gradually shifted in the axial direction of the conductive ring 60 from the position of the inner peripheral surface 60a having a diameter slightly smaller than the outer diameter of the insulator 3 of the coaxial cable 1. The coaxial cable 1 has a conical surface whose diameter changes to a larger diameter until it reaches the position of the outer peripheral surface 60b having a diameter slightly smaller than the outer diameter of the outer conductor 4 of the coaxial cable 1, and the other end surface 60d in this case is It may be a conical surface extending parallel to the conical end surface 60c so as to form a thin thickness with the conical end surface 60c, and may be made of an elastic metal conductor. As shown in FIG. 4B, in the conductive ring 60 shown in FIG. 4A, a split 61 extending parallel to the axis of the conductive ring 60 between the inner peripheral surface 60a and the outer peripheral surface 60b. 4A, and therefore may have the same configuration as the conductive ring 60 shown in FIG. 4A except that it is C-shaped. Further, as shown in FIG. 4C, the opposite end faces 60c and 60d are planes perpendicular to the axis of the conductive ring 60, and are made of a conductor having elasticity such as a conductive elastomer. It can be something.

The embodiments of the coaxial cable connector according to the present invention have been described above.

According to the coaxial cable connector according to the present invention having such an embodiment, the outer conductor 4 is provided around the free-end portion 5 of the coaxial cable 1 on which the terminal treatment is performed.
Around the cylindrical body 40 constituting the coaxial cable grasping / propelling means 50, the cylindrical part 41 can be arranged in a direction in which the cylindrical part 41 is located on the end 2a side of the center conductor 2 of the coaxial cable 1; Further, in this state, the cylindrical body 30 constituting the coaxial cable gripping / propelling means 50 is formed around the free-end portion 5 of the coaxial cable 1 around the end-treated portion and around the outer conductor 4 thereof. In a direction in which the minimum diameter side of the outer surface 30b is on the tip 2a side of the center conductor 2 of the coaxial cable 1,
In this state, around the free-end portion 5 where the coaxial cable 1 is subjected to the terminal treatment,
Around the insulator 3, a conductive ring 60 having elasticity or elasticity can be provided.

A state in which the cylinders 40 and 30 and the conductive ring 60 having elasticity or elasticity are arranged around the free end 5 of the coaxial cable 1 having been subjected to the terminal treatment. Then, the free end 5 of the coaxial cable 1 is inserted into the cylindrical body 10 from the tip 2a side of the center conductor 2 and from the cylindrical part 13 side thereof.
(A) Tip 2 of center conductor 2 at free end 5 of coaxial cable 1
a protrudes outward from the end face of the cylinder body 10 on the side of the cylinder portion 11,
(B) The portion from the free end surface 4a of the outer conductor 4 of the insulator 3 at the free end portion 5 of the coaxial cable 1 to the end surface 3a of the insulator 3 is located in the tubular portion 11 of the tubular body 10; The outer conductor 4 at the free end 5 of the coaxial cable 1 is located in the tube portions 12 and 13 of the tube 10, and (d) the free end surface 4a of the outer conductor 4 of the coaxial cable 1 is the tube of the tube 10. It can be inserted into the annular end face 11c of the portion 11 via the conductive ring 60 having elasticity or elasticity so as to be close to and facing.

Further, from such a state, the main screw 41c of the cylindrical portion 41 of the cylindrical body 40 is connected to the coaxial cable gripping / propelling means 50.
The cylindrical body 40 is screwed into the screw 13c of the cylindrical part 13 of the cylindrical body 10 so as to enter into the main thread 41c of the cylindrical part 41 of the cylindrical body 40, thereby connecting the cylindrical body 40 to the cylindrical body 10 Can be propelled to the cylindrical portion 11 side. Further, thereby, the inner surface 42 of the cylindrical portion 42 of the cylindrical body 40 is attached to the conical surface portion 31b of the end surface 31 on the largest diameter side of the conical outer surface of the cylindrical body 30 which constitutes the coaxial cable gripping promotion means 50. The cylindrical body 30 can be propelled toward the cylindrical portion 11 of the cylindrical body 10 by abutting the outer surface of the circular cone 30 toward the side opposite to the end surface 31 on the maximum diameter side. Furthermore, at this time, the conical outer surface 30b of the cylindrical body 30 engages with the conical inner surface 13a of the cylindrical portion 13 of the cylindrical body 10, while the cylindrical body 30 has a split.
The cylindrical body 30 is pressed and shrunk so as to reduce the inner diameter, and clamps the outer conductor 4 of the coaxial cable 1 from the outside.
For this reason, the coaxial cable 1 is placed inside the cylindrical body 10 in the cylindrical portion 11.
And the conductive ring 60 having elasticity or elasticity is attached to the annular inner surface 11c of the cylindrical portion 11 of the cylindrical body 10 by the free end surface 4a of the outer conductor 4 of the coaxial cable 1. The outer conductor 4 of the coaxial cable 1 is brought into pressure contact with the conductive ring 60 having elasticity or elasticity.
Can be electrically connected to the cylindrical body 10 having conductivity. If such a state is obtained, the cylindrical body 10 is fixedly attached to the free end portion 5 of the coaxial cable 1 together with the conductive ring 60 having elasticity or elasticity and the cylindrical bodies 30 and 40. State.

Further, from such a state, though not described in detail, the center conductor 2 of the coaxial cable 1 and the tube portion 11 of the tube 10 are connected to the center conductor and the external conductor of another external coaxial cable. Can be done.

As described above, the coaxial cable connector according to the present invention is also similar to the conventional coaxial cable connector shown in FIGS. Fixedly attached to the end portion 5 so that the outer conductor 4 of the coaxial cable 1 can be connected to the outside via the conductive cylinder 10 and the center conductor 2 of the coaxial cable 1 can be directly connected to the outside; Therefore, the coaxial cable 1 can function as a connector for connecting the center conductor 2 and the outer conductor 4 to the outside.

However, in the case of the coaxial cable connector according to the present invention, as described above, the connector 13c is attached to the outer peripheral surface 13b of the cylindrical portion 13 of the conductive cylindrical member 10; In a state where the conductive ring 60 is fixed to and attached to the free end portion 5 of the coaxial cable 1 using the coaxial cable gripping and propelling means 50 composed of Therefore, at any position in the entire area viewed from the axis of the coaxial cable 1,
Free end surface 4a of outer conductor 4 of coaxial cable 1 and cylindrical body 10
Is securely pressed against the annular end face 11c of the cylindrical portion 11 of
Can be obtained. And the state is
Pressure, vibration, heat stress, etc. are unnecessarily applied from the outside, or the screw 13c of the cylindrical portion 13 of the cylindrical body 10 and the set screw 13c of the cylindrical body 40 which constitute the coaxial cable gripping / propelling means 50. Coaxial cable gripping and propelling means 50 by screwing
Does not substantially change even if the state in which the cylindrical body 30 is pushed toward the cylindrical portion 11 of the cylindrical body 10 becomes loose. For this reason, in view of the frequency-attenuation characteristic of the high-frequency signal transmitted to the coaxial cable 1 when functioning as the above-described connector, as shown in FIG. can get.

In the above description, only the embodiment of the present invention applied to the conventional coaxial cable connector shown in FIGS. 6 to 8 has been described, and various modifications may be made without departing from the spirit of the present invention. The embodiment of FIG.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a coaxial cable connector according to the present invention, together with a coaxial cable to which the connector is attached.

FIG. 2 is a schematic sectional view showing the coaxial cable connector according to the present invention shown in FIG. 1 in a state where it is attached to a coaxial cable.

FIG. 3 is a schematic sectional view showing the coaxial cable connector according to the present invention shown in FIG. 1 in a state where it is attached to a coaxial cable.

FIG. 4 is a schematic line showing a conductive ring used in the coaxial cable connector according to the present invention shown in FIG. 1 and a conductive ring that can be used instead in the coaxial cable connector according to the present invention shown in FIG. 1; FIG.

5 is a diagram illustrating a coaxial cable connector according to the present invention shown in FIG. 1; FIG. 5 is a diagram illustrating a frequency (GHz) -attenuation characteristic of a high-frequency signal transmitted to a coaxial cable to which the coaxial cable connector according to the present invention shown in FIG. It is a figure showing (db).

FIG. 6 is a schematic sectional view showing a conventional coaxial cable connector together with a coaxial cable to which it is attached.

7 shows a conventional coaxial cable connector shown in FIG.
It is an approximate line sectional view showing in the state when it is attached to a coaxial cable.

FIG. 8 shows a conventional coaxial cable connector shown in FIG.
FIG. 4 is a schematic cross-sectional view showing a state where it is attached to a coaxial cable.

9 provides a description of the conventional coaxial cable connector shown in FIG. 6, and illustrates a frequency (GHz) -attenuation characteristic (db) of a high-frequency signal transmitted to a coaxial cable to which the conventional coaxial cable connector shown in FIG. 6 is attached. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coaxial cable 2 Center conductor 2a Tip of center conductor 2 3 Insulator 3a Free end surface of insulator 3 4 External conductor 4a Free end surface of external conductor 4 5 Free end portion 10 Cylindrical body 11 Cylindrical part 11a Cylindrical inner surface 11b Cylindrical outer surface 11c Circle Annular end surface 12 Cylindrical portion 12a Cylindrical inner surface 12b Cylindrical outer surface 12d Annular groove 13 Cylindrical portion 13a Conical inner surface 13b Cylindrical outer surface 13c Screw 20 Cylindrical body 21 Cylindrical portion 21a Cylindrical inner surface 21b Cylindrical outer surface 21c Mother screw 22 Cylindrical inner surface 22a Cylindrical inner surface 22b 22d annular groove 23 elastic body 30 cylindrical body 30a inner surface 30b conical outer surface 31 end surface 31a annular surface portion 31b conical surface portion 31c cylindrical inner surface 40 cylindrical body 41 cylindrical portion 41a inner surface 41b cylindrical outer surface 41c mother screw 42 cylindrical portion 42c inner cylindrical surface 42b Conical inner surface 42d Cylindrical inner surface 50 Coaxial cable thruster Step 60 Conductive ring 60a Inner peripheral surface 60b Outer peripheral surface 60c End surface 61 split

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 61-42791 (JP, U) Japanese Utility Model Sho 51-34694 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H01R 17/00-17/18

Claims (1)

(57) [Claims] 1. A center conductor, an insulator having an annular cross section disposed around the center conductor, and an outer conductor having an annular cross section disposed around the center conductor, and one free end portion is a free end surface of the insulator. And the free end surface of the outer conductor is terminated at a position where the free end surface of the outer conductor is sequentially lowered to the other free end side as viewed from the tip of the center conductor. (I) (a) a first cylindrical portion having a cylindrical inner surface having a diameter substantially equal to an outer diameter of an insulator of the coaxial cable;
(B) a cylindrical second cylindrical portion having a cylindrical inner surface having a diameter substantially equal to the outer diameter of the outer conductor of the coaxial cable; and (c) a cylindrical inner surface of the second cylindrical portion substantially equal to or slightly smaller than the cylindrical inner surface. A third cylindrical portion having a conical inner surface having a diameter that linearly gradually changes from a large diameter to a large diameter in the axial direction; and (d) the first, second, and third Are connected together in such a manner that their axes are aligned with each other and the third cylinder is oriented such that the smaller diameter side of the inner surface of the cone becomes the second cylinder side. (Ii) (a) a screw attached to the outer peripheral surface of the third cylindrical portion of the first cylindrical body, and (b) an outer conductor of the outer conductor of the coaxial cable. The inner surface, which has been subjected to uneven processing on the inner surface of a cylinder having a diameter almost equal to or slightly larger than the diameter, and (C) a cylindrical second cylinder having a conical outer surface engageable with the conical inner surface of the third cylindrical portion of the first cylinder and having a split extending between both end surfaces; A fourth cylindrical portion having an inner surface provided with a female screw to be screwed with the screw, and a fifth cylindrical portion having an inner surface capable of engaging with the end surface on the largest diameter side of the outer conical surface of the second cylindrical body. And a coaxial cable gripping / propelling means having a cylindrical third cylindrical body having: (iii) an outer diameter of an insulator substantially equal to or slightly smaller than an outer diameter of an insulator of the coaxial cable. It has an inner peripheral surface having a large diameter and an outer peripheral surface having a diameter substantially equal to or slightly smaller than the diameter of the cylindrical inner surface of the second cylindrical portion of the first cylindrical body, and has elasticity or elasticity. And the connector for the coaxial cable is subjected to the terminal treatment of the coaxial cable. The second tube of the first tube portion of the first tube around the insulator at the free-ended end of the coaxial cable when attached to the free end of the coaxial cable. A coaxial cable connector having a conductive ring disposed so as to be interposed between the annular end surface exposed to the outside of the portion and the free end surface of the outer conductor of the coaxial cable. .