JP4620991B2 - Coaxial cable connector - Google Patents

Description

The present invention relates to a coaxial cable connector, and more particularly to a structure of a coaxial cable connector that can be easily connected and hardly pulled out even when the coaxial cable is pulled.

Conventionally, as a coaxial cable connector to be attached to the end of a coaxial cable, a cable connecting portion connected to a braided conductor of the coaxial cable, and a base end portion of the cable connecting portion are movable in the axial direction and in the circumferential direction. A ring-shaped engaging part pivotally attached to the cable, and an elastic member performing an elastic buffering action between the cable connecting part and the engaging part; Since it has a locking piece that protrudes, and the locking piece is engaged and connected to a groove formed by a series of an introduction portion, a guide portion, and a locking portion provided on the screw surface of the connector seat. The coaxial cable connector can be connected to the connector seat only by rotating the ring-shaped engaging portion and can be firmly attached. In addition, the detachment operation can be smoothly performed by an elastic buffering action by an elastic member provided between the cable connecting portion and the engaging portion.
(For example, see Patent Document 1)

Japanese Patent No. 3034534

However, the conventional coaxial cable connector is provided with a locking piece on the inside of the end face of the ring-shaped engaging part, so that a locking groove is required on the connector seat to be mounted. Otherwise, there was a problem that it could not be installed .
Further, the elastic member, the improvement of the operability of the connection, but one that is provided for the attachment strength improvement after connection, and disc springs held by a stop ring, chrysanthemum-type contact with the front end surface of the connector seats because it is composed of a plurality of components and said spring, the structure becomes complicated, there is a problem in its turn increasing the cost of the product.
The present invention has been made to solve these problems, and its object is mounting operation of the coaxial cable is simple, it is to provide a coaxial cable connector that can provide excellent connection fixing strength .

The invention described in claim 1 made to achieve such an object,
A connection tube for connection to the external conductor to be connected;
An insertion portion for insertion into the inner side of the braided conductor of the coaxial cable is formed on one opening end side in a cylindrical shape, and a pivoting portion for rotatably fixing the connection tube on the other opening end side A connector body formed with
A tubular fastener,
For coaxial cable connectors with
The connector body is
A fastening portion for abutting a protective coating around the braided conductor of the coaxial cable is provided around the cylindrical portion between the insertion portion and the pivoting portion, and the insertion portion is inserted from the fastening portion. toward the open end of the section, the engaging portion whose inner circumference is formed to the tape par shape gradually increases, and the introduction portion a female screw is formed on the inner peripheral surface are sequentially formed,
The fastener is
Wherein in a cylindrical shape having a coaxial cable can be inserted inner diameter, the one opening end side, is formed an operation portion for rotating operation, the outer circumferential surface of the intermediate portion extending in the other open end from the operation portion, the connector It is formed the female thread to threadably male thread of the body, the other open end side, wherein the slit along the center axis direction of the tube is formed.

According to a second aspect of the present invention, there is provided the coaxial cable connector according to the first aspect, wherein at least two insertion holes having different inner peripheral diameters are provided on the same axis line in the hole of the stopper. It is characterized by becoming .

  According to a third aspect of the present invention, in the coaxial cable connector according to the first or second aspect, a ridge is formed on the inner periphery of the distal end portion of the fastener where the slit is formed. It is characterized by.

Further, the invention according to claim 4 is the coaxial cable connector according to any one of claims 1 to 3, wherein the insertion portion of the connector main body is near the tip of the insertion portion, and A raised portion is formed on the outer periphery of the fastener in the vicinity of the position facing the portion where the slit is formed.

In the coaxial cable connector according to claim 1, a fastening portion for contacting a protective coating around the braided conductor of the coaxial cable is provided around the cylindrical portion between the insertion portion and the pivot attachment portion of the connector body. are erected toward the open end of the insertion portion from the fastening portion, the engaging portion whose inner circumference is formed to the tape par shape gradually increases, and, the female screw on the inner peripheral surface The formed introduction portions are sequentially formed.
Further, the coaxial cable connector according to claim 1 has a cylindrical shape having an inner diameter through which the coaxial cable can be inserted, and an operation portion for rotating operation is formed on one opening end side, from the operation portion to the other. A male screw that can be screwed into the female screw of the connector body is formed on the outer peripheral surface of the intermediate portion that reaches the open end, and a slit is formed along the central axis direction of the cylinder on the other open end side. Stops are provided.
For this reason, according to the coaxial cable connector of the present invention, when the coaxial cable is attached to the tip of the coaxial cable, the coaxial cable is inserted into the hole of the stopper, and the insertion portion of the connector body is inserted into the coaxial cable. The stopper may be inserted into the introduction portion of the connector main body from the opening end side where the slit is formed, and the operating portion may be rotated to engage the male screw and the female screw.
That is, in this way, the tip of the stopper is slid while abutting against the inner wall of the locking portion of the connector body, and the tip is pressed inward.
When the tip of the stopper is pressed inward in this way, the protective coating around the coaxial cable is bitten and the coaxial cable connector is firmly fixed to the coaxial cable.
Therefore, according to the coaxial cable connector of the present invention, it is possible to easily attach to the coaxial cable without requiring a particularly difficult processing technique when processing the coaxial cable, and to remove the coaxial cable in the pull-out direction. Also, it has excellent adhesion.
As a result, even when used for a long period of time, the sticking property is maintained well, and problems such as intrusion and emission of noise from the fixed portion can be prevented. In addition, since the coaxial cable is not deformed when the coaxial cable is connected, a coaxial cable connector having excellent high-frequency characteristics can be provided.

Next, according to the coaxial cable connector of the second aspect, since the insertion hole having at least two different inner peripheral diameters is provided on the same axis line in the hole of the stopper , the insertion portion is connected to the coaxial cable. Even if the outer diameter of the coaxial cable swells due to the insertion, this bulged portion is accommodated in one insertion hole formed in the stopper with a large inner diameter, and the generally specified dimension of the coaxial cable is can Rukoto is inserted into the insertion hole of the smaller of the other inner circumference. In this case, when the fastener is tightened, no extra space is generated between the coaxial cable and the insertion hole, so that the coaxial cable can be prevented from vibrating greatly.
Further, since the two insertion holes having different inner peripheral diameters are connected in series so that the axes are at the same position, a step or the like can be formed at the connection portion of these insertion holes. This step is designed so that when the stopper is fastened to the connector body, the outer peripheral surface of the coaxial cable is pressed against the connector body, and the coaxial cable is further pulled out. It is possible to provide a coaxial cable connector having excellent adhesion to a direction.

In addition, according to the coaxial cable connector of the third aspect, since the raised portion is formed on the inner periphery of the tip portion on the side where the slit is formed in the stopper , the coaxial cable connector is further fixed in the pulling direction of the coaxial cable. As a result, it is possible to provide a coaxial cable connector that can maintain its adhesiveness well even during long-term use and can prevent problems such as noise intrusion and emission from the fixed portion.

Further, according to the coaxial cable connector of the fourth aspect, in the insertion portion of the connector main body, in the vicinity of the distal end portion of the insertion portion and in the vicinity of the position facing the portion where the slit is formed in the stopper. Since the protruding portion is formed on the outer periphery , not only can the coaxial cable be inserted and inserted easily, but also a coaxial cable connector in which the coaxial cable is difficult to be pulled out from the insertion portion can be provided.

Hereinafter, an example of an embodiment embodying the present invention will be described in detail with reference to the drawings.
FIG. 1 is an exploded sectional view showing an example of an embodiment of a coaxial cable connector according to the present invention. FIG. 2 is a cross-sectional view showing the course of assembly. FIG. 3 is a view showing an assembled state of the coaxial cable connector according to the present invention. FIG. 4 is an enlarged view of the main part in the final assembled state.

In FIG. 1, 2 is a connecting tube, 10 is a stopper, 20 is a coaxial cable in which an inner laminate 5 is covered with an aluminum laminate foil 6 and a braided conductor 7 is provided around it , and 30 is a connector body. .
The coaxial cable connector according to the present invention includes a connector body 30, a connection tube 2 to be screwed onto a connector connection target, and a stopper 10.
The connector main body 30 is formed of a conductive material, and includes an insertion portion indicated by 11 and a fastening metal fitting indicated by 12, and is tapered at the distal end of the insertion portion 11 so that the coaxial cable 20 can be easily assembled. An insertion tip portion 11a having a first raised portion 41 processed into a shape that can be easily inserted is formed on the entire circumference, and the insertion portion 11 is formed between the aluminum laminated foil 6 of the coaxial cable 20 and the braided conductor 7. Inserted into.

The fastening bracket 12 includes a fastening portion 12a for inserting and fastening the protective coating 8 of the coaxial cable 20, and an inner diameter from the distal end portion of the fastening portion 12a toward the distal end direction of the insertion portion 11. Is formed of a locking portion 12b formed in a tapered shape so as to gradually spread, and an introduction portion 12c extending to the locking portion 12b and having a female screw 42 formed on the inner peripheral surface thereof. It is press-fitted and fixed to the rear end.
A pivoting portion 18 having a mounting groove 12d into which the connection tube 2 is fitted is formed around the rear end side of the fastening fitting 12.

The connecting cylinder 2 is a cylindrical outer conductor formed of a conductive material like the connector main body 30, and the squeezed portion 2a in which one open end of the cylindrical conductor is folded inward over the entire circumference and the connector main body. The central mounting shaft 12d is pivotally attached while being brought into contact with each other in a state where the 30 mounting grooves 12d are engaged with each other.

The stopper 10 has an insertion hole 16 for inserting the coaxial cable 20 at the center position, and a male screw 43 that is screwed into a female screw 42 formed on the inner peripheral surface of the introduction portion 12c is formed on the outer peripheral surface. On the other side of the threaded portion 13, the operating portion 15 formed on one side of the threaded portion 13, and the other side of the threaded portion 13, the outer diameter of at least the other side end is the maximum inner circumference of the locking portion 12 b. The fastening portion 14 is formed so as to be smaller than the diameter and larger than the minimum inner peripheral diameter, and includes a plurality of slits 14a, 14a,.

Next, the procedure for mounting the connector and the coaxial cable 20 according to the present invention will be described with reference to FIGS.
First, the coaxial cable 20 is inserted into the stopper 10, and then the insertion tip 11 a of the connector main body 30 is stepped from the end of the coaxial cable 20 that has been stripped to a predetermined length according to the connector main body 30. Insert between the braided conductors 7 and insert. At this time, it inserts so that the process end part of the braided conductor 7 of the coaxial cable 20 and the protective coating 8 may contact | abut to the fastening part 12a of the fastening metal fitting 12. FIG.
Next, by inserting the fastening portion 14 of the fastener 10 into the introduction portion 12 c of the fastener 12, the male screw 43 formed on the peripheral surface of the screwing portion 13 of the fastener 10, and the fastener 12 The stopper 10 is screwed to the connector main body 30 by screwing the female screw 42 formed on the inner peripheral surface.
In the embodiment of the present application, the outer peripheral surface of the operation portion 15 of the stopper 10 is knurled. Even if the rotation operation of the stopper 10 is performed with a fingertip, the rotation operation is easier and more reliable. It is formed so that it can be.
The operation unit 15 is not limited to the knurling as described above. For example, if the operation unit 15 is formed in a hexagonal shape, the operation unit 15 can be tightened more reliably using a tool such as a spanner as well as a rotation operation with a fingertip. You may comprise so that it can do.

This screwed state will be described in more detail with reference to FIG. When the stopper 10 is screwed together, the distal end portion of the fastening portion 14 of the stopper 10 comes into contact with a locking portion 12b formed in a tapered shape on the inner peripheral surface of the fastening member 12. . Since the fastening portion 14 slit 14a is formed in plural, sliding further by Yuku by screwing fasteners 10, the distal end portion outer peripheral surface of the fastening portion 14 on the inner periphery of the locking portion 12b Each piece of the fastening part 14 is pressed inward while contacting, and the circumferential diameter of the fastening part 14 becomes slightly smaller.
At the inner periphery of the locking portion 12b and at the connection portion with the fastening portion 12a, the distal end of the fastening portion 14 formed on the fastening device 10 when the fastening device 10 is screwed into the connector body 30. The tip of the fastening portion 14 abuts so that the portion does not enter the direction of the fastening portion 12a into which the protective coating 8 and the braided conductor 7 of the coaxial cable 20 are inserted beyond the range of the locking portion 12b. An abutting portion 12e is formed so as to limit the screwing range of the stopper 10.
Since the protective coating 8 of the coaxial cable 20 is formed of a soft synthetic resin material, the protective coating 8 is elastically deformed by the fastening portion 14 by screwing the stopper 10 into the connector main body 30, and The protective coating 8 and the braided conductor 7 are reliably brought into contact with the insertion portion 11 to finish the mounting.

Further, in the embodiment of the present application, the insertion tip portion 11a is formed with the first raised portion 41, so that not only the coaxial cable 20 can be easily inserted and inserted, but the coaxial cable is inserted into the insertion portion. 11, and a protruding portion 14 b is projected inwardly on the inner peripheral surface of the distal end portion of the fastening portion 14, and is coaxial with the fastening portion 14. The cable 20 is configured to be more securely fastened.
In the embodiment of the present application, an example in which the first raised portion 41 is formed is shown. However, the present invention is not particularly limited to this, and the first raised portion 41 of the connector main body may be omitted.
Furthermore, at the outer peripheral surface of the insertion portion 11 facing the fastening portion 14, there is little influence on the insertion / insertion operation of the coaxial cable 20, and the removal is prevented in the withdrawal direction. A second raised portion 44 is formed, and the distal end portion of the second raised portion 44 is locked from the inward direction of the coaxial cable 20 by fastening of the fastening portion 14. By doing so, the structure is more reliable and durable against the force in the pulling direction with respect to the coaxial cable 20.

As described above, the coaxial cable connector of the present application includes the fastening portion 14, the raised portion 14 b formed on the inner peripheral surface of the fastening portion 14, the first raised portion 41 and the second raised portion formed in the insertion portion 11. The coaxial cable 20 is securely fixed by the portion 44 and is more difficult to pull out. On the other hand, by inserting the coaxial cable 20 into the connector main body 30, depending on the peripheral diameter of the insertion portion 11, The outer peripheral diameter of the coaxial cable 20 is increased, and this peripheral diameter is the largest in the vicinity of the first raised portion 41.
Therefore, in this embodiment, the insertion hole 16 formed in the stopper 10 has at least an inner peripheral diameter through which the outer diameter of the connector body 30 can be inserted and a generally defined outer periphery of the coaxial cable 20. It has a configuration in which two insertion holes having different inner peripheral diameters are provided on the same axis line with an inner peripheral diameter through which the diameter can be inserted. According to the embodiment of the present application, the insertion hole 16a formed on the fastening portion 14 side is formed to have an inner diameter that can accommodate the maximum outer diameter when the coaxial cable 20 is attached to the connector body 30. The insertion hole 16b formed on the side is formed so that the generally defined outer peripheral diameter of the coaxial cable 20 can be inserted.

Further, the connection portion between the insertion hole 16a and the insertion hole 16b is formed with an extending portion 16c so as to continuously expand in a tapered shape, and when the stopper 10 is screwed to the connector main body 30, By forming the extended portion 16 c so as to press the raised portion of the coaxial cable 20 toward the connector body 30, the coaxial cable 20 is configured to be more firmly prevented from being pulled out of the connector body 30.
The insertion hole 16a and the insertion hole 16b may be connected without forming the extended portion 16c. In this case, the corner of the step formed at the connection portion between the insertion hole 16a and the insertion hole 16b is a coaxial cable. You may form so that the force with respect to the pulling-out direction of the connector main body 30 may be received by comprising so that it may bite into 20 protruding parts.
In the case where the first raised portion 41 of the insertion portion 11 is not provided, or when the bulging portion 41 is slightly present even if the raised portion 41 is present, the insertion hole 16 may be formed as in the above embodiment. And it is good also as a structure provided with one penetration hole so that a bulging part may penetrate.

In the embodiment of the present application, when the coaxial cable 20 is stepped to a predetermined length, the end portion of the internal insulator 5 is more than the opening end of the insertion hole 30a formed in the connector body 30 on the pivot attachment portion 18 side. However, the present invention is not limited to the embodiment of the present application. For example, the pivoting portion of the insertion hole 30a may be used. A side opening end portion is formed smaller than the peripheral diameter of the insertion hole 30a, and has a sufficient space through which the central conductor 4 can be inserted while maintaining a predetermined distance from the central conductor 4 of the coaxial cable 20. By providing a core wire hole having the same axis as that of the insertion hole 30a, the end of the inner insulator 5 inserted into the insertion hole 30a abuts on the peripheral edge of the core wire hole. The body 5 protrudes in the direction of the connecting tube 2 Coaxial cable connector without can be provided.
Further, in this embodiment, the center conductor of the connector is described as a central conductor (core wire) 4 of the coaxial cable 20, and the center conductors of the connector pins of connectors are molded separately, coaxial it may be placed over the core wire of the cable.

Further, by forming an uneven hand stage on the outer peripheral surface of the insertion portion 11 of at least the connector body 30, that the the uneven hand stage and braided conductor 7 is in close contact so as to mesh with each other, more reliably pulled out difficult mechanical It is good also as a structure which ensures the connection by joining.
As the example of the concavo-convex hand stage, it may be a knurling on the outer peripheral surface of the insertion portion 11, or a method of providing a plurality of grooves in the axial direction. Needless to say, uneven means may also be provided on the outer periphery of the raised portions 41 , 44 .
The coaxial cable used to connect the coaxial cable connector of the present application is an aluminum laminated type coaxial cable in which an aluminum laminated foil 6 is covered on the outer peripheral surface of the inner insulator 5. Even with respect to a coaxial cable having no cable, the insertion portion 11 may be inserted between the inner insulator 5 of the coaxial cable 20 and the braided conductor 7.

As described above, according to the coaxial cable connector of the present application, it is possible to easily attach without processing a particularly difficult processing technique when processing the coaxial cable, but it can be fixed even in the pulling direction of the coaxial cable. As a result, even if it is used for a long period of time, its sticking property is maintained well, and problems such as noise intrusion and emission from the fixed part can be prevented.
In addition, since the coaxial cable is not deformed when the coaxial cable is connected, a coaxial cable connector having excellent high-frequency characteristics can be provided.
It should be noted that the configuration of each part can be changed as appropriate without departing from the spirit of the present invention.

It is sectional drawing of the decomposition | disassembly state which showed one example of embodiment of the coaxial cable connector which concerns on this invention. It is sectional drawing which shows progress in the middle of an assembly | attachment. It is a figure which shows the assembly | attachment state of the coaxial cable connector which concerns on this invention. It is a principal part enlarged view in an assembly | attachment state.

Explanation of symbols

2 ... Connection cylinder, 2a ... Squeezed part, 4 ... Center conductor, 5 ... Inner insulator, 6 ... Aluminum laminate, 7 ... Braided conductor ( outer conductor ) , 8 ... Protective coating , 10 ... Stopper, 11 ... Insertion part, 11a ... Insertion end, 12 ... Fastening bracket, 12a ... Fastening part, 12b ... Locking part, 12c ... Introduction part, 12d ... Mounting groove, 12e ... Contact part, 13 ... Screwing part, 14 ... Fastening Part 14a ... slot, 14b raised part, 15 operation part, 16a, 16b insertion hole, 16c extension part, 18 pivoting part, 20 coaxial cable, 30 connector body, 30a insertion hole , 41... 1st raised portion, 42... Female screw, 43... Male screw, 44 .

Claims (4)

A connection tube for connection to the external conductor to be connected;
An insertion portion for insertion into the inner side of the braided conductor of the coaxial cable is formed on one opening end side in a cylindrical shape, and a pivoting portion for rotatably fixing the connection tube on the other opening end side A connector body formed with
A tubular fastener,
For coaxial cable connectors with
The connector body is
A fastening portion for abutting a protective coating around the braided conductor of the coaxial cable is provided around the cylindrical portion between the insertion portion and the pivoting portion, and the insertion portion is inserted from the fastening portion. toward the open end of the section, the engaging portion whose inner circumference is formed to the tape par shape gradually increases, and the introduction portion a female screw is formed on the inner peripheral surface are sequentially formed,
The fastener is
Wherein in a cylindrical shape having a coaxial cable can be inserted inner diameter, the one opening end side, is formed an operation portion for rotating operation, the outer circumferential surface of the intermediate portion extending in the other open end from the operation portion, the connector A male screw that can be screwed into the female screw of the main body is formed, and a slit is formed on the other opening end side along the central axis direction of the cylinder .
A coaxial cable connector characterized by that. 2. The coaxial cable connector according to claim 1, wherein the hole of the fastener is formed by connecting at least two insertion holes having different inner peripheral diameters on the same axis. The coaxial cable connector according to claim 1 or 2, wherein a protruding portion is formed on an inner periphery of a tip portion on the side where the slit is formed in the stopper . In the insertion portion of the connector main body, a protruding portion is formed on the outer periphery of the vicinity of the distal end portion of the insertion portion and the position near the portion where the slit is formed in the stopper. The coaxial cable connector according to any one of claims 1 to 3, wherein the coaxial cable connector is characterized.

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