JP4664704B2 - 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 to a connector seat and that is not easily 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, according to the conventional coaxial cable connector, the locking piece is provided on the inner side of the end face of the ring-shaped engaging portion, so that this coaxial cable connector requires a locking groove on the connector seat to which it is attached. Because it cannot be installed unless it is a dedicated connector seat, there was a problem in terms of versatility.
In addition, the elastic members provided to improve the operability of the connection and to improve the mounting strength after the connection are called a disc spring held by a retaining ring or a chrysanthemum spring that abuts against the end face of the connector seat. Because it is composed of a plurality of components, there is a problem that the structure becomes complicated and the cost of the product increases.
Therefore, in this application, it was made to solve these problems.
The purpose is to provide a coaxial cable connector that can be easily connected.
Another object is to provide a low-cost coaxial cable connector.
Another object is to provide a coaxial cable connector capable of making a connection with excellent adhesion.
Another object is to provide a coaxial cable connector that is difficult to pull out even when the coaxial cable is pulled.
Another object is to provide a coaxial cable connector with excellent high-frequency characteristics.
Another object is to provide a coaxial cable connector with excellent immunity.

The invention described in claim 1 made to achieve such an object,
In the coaxial cable connector to be attached to the end of the coaxial cable,
A cylindrical connector body formed so that one side is connected to the braided conductor of the coaxial cable and the other side is slidably engaged with the external conductor to be connected;
A shell that is axially movable on the outer periphery of the connector body and pivotally mounted on one side so as to be rotatable in the circumferential direction;
An internal thread is formed on the inner peripheral surface of the other end portion of the shell,
The other side of the connector body, towards the end so that the peripheral diameter is larger than the inner circumference of the shell end to form a tapered shape, forms a slit in the vicinity of the end portion, the A protrusion is formed on the inner peripheral surface near the end, and a male screw that can be screwed into the female screw is formed on the outer peripheral surface near the end.
The peripheral diameter on the other side of the connector main body can be varied by a pressing force in the axial center direction generated by screwing the female screw of the shell and the male screw of the connector main body .

The invention according to claim 2 is the coaxial cable connector according to claim 1 , wherein at least a part or all of the outer shape of the shell is hexagonal from the other side to the one side of the shell. It is characterized by that.

According to the coaxial cable connector of the first aspect, the peripheral diameter on the other side of the connector main body can be varied by screwing the female screw of the shell and the male screw of the connector main body. It is possible to provide a coaxial cable connector that can be connected to the cable and is difficult to pull out by pulling the coaxial cable. Also, if the shell is loosened, it can be easily removed, so anyone can use it easily and provide a highly reliable coaxial cable connector .
In addition, since the male screw of the connector body and the female screw of the shell are screwed together , the screwed portion is configured to be tightened in the axial center direction with respect to the base of the connector seat. Therefore, it is possible to provide a coaxial cable connector with good characteristics against high frequency characteristics such as immunity .

In addition, since a protrusion is formed on the inner peripheral surface of the other end of the connector body, the connection between the protrusion and the connector seat enables a connection with stronger adhesion and superior high-frequency characteristics. A cable connector can be provided .

According to the coaxial cable connector of claim 2, since the outer shape of the shell is configured such that at least a part or all of the outer shape from the other side of the shell to the one side is a hexagon, strongly not only can be attached, Ru can be more firmly mounted by tightening the shell with a simple tool. Therefore, it can be used in places that require high reliability, and a highly versatile coaxial cable connector 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 partial sectional view showing an example of an embodiment of a coaxial cable connector according to the present invention. FIG. 2A is a partial cross-sectional view of the side surface of the coaxial cable connector shown in FIG. (B) is the fragmentary sectional view of the side surface when a shell is fastened. FIG. 3A is a side view showing a partial cross-section of the connector main body shown in FIG. 1 attached to a coaxial cable, and FIGS. 3B and 3C are diagrams showing a procedure for attaching to the electronic device. FIG. 4 shows another embodiment of the coaxial cable connector. FIGS. 5A and 5B are examples showing different shapes of the shell. 6 (a), 6 (b), and 6 (c) show an embodiment in which the insertion portion is provided with uneven means.

In FIG. 1, 2 is a shell, 3 is a fixing ring, 20 is a coaxial cable coated with an aluminum laminate foil 6, and 30 is a connector body.
The coaxial cable connector according to the present invention has one connector body 30 that is connected to the end portion of the coaxial cable, the other is slidably locked to the connector connection target, and is movable in the axial direction of the connector body 30. The shell 2 is pivotally mounted on one side so as to be rotatable in the circumferential direction, and the fixing ring 3.
The connector body 30 is made of a conductive material, and has an insertion tip portion provided with a raised portion 42 formed on the tip of the insertion portion 11 to be inserted into the coaxial cable 20 so as to be easily inserted such as a taper. 11 a is formed, and the insertion portion 11 is inserted between the aluminum laminate foil 6 and the braided conductor 7 of the coaxial cable 20, and after the insertion into the coaxial cable 20 is completed, crimping is performed by the fixing ring 3.

A fastening ring 12 having an insertion fastening portion 12 a for inserting and fastening the protective coating 8 of the coaxial cable 20 is press-fitted and fixed to the rear end of the insertion portion 11, and an intermediate portion of the connector body 30. A mounting groove 11b into which the shell 2 is fitted is formed around.
Furthermore, a joining portion 13 is formed on the other side of the connector main body to connect to a connector seat that is a connector connection target. The outer peripheral diameter of the end portion 13a of the joint portion 13 is tapered toward the end portion 13a so as to be equal to or slightly larger than the inner peripheral diameter of the shell 2, and the opening of the joint portion 13 is formed. A plurality of slits 13b are formed from the end, and the joining portion can be slidably engaged with the connector seat.
Further, a male screw 13c is formed on the outer peripheral surface in the vicinity of the end portion 13a.

The shell 2 is a cylindrical outer conductor formed of a conductive material like the connector main body 30, and the narrowed portion 2 a in which one opening end of the cylindrical conductor is folded inward over the entire circumference, and the connector main body 30 mounting grooves 11b are pivotally mounted with their central axes aligned while being brought into contact with each other in a meshed state, and are mounted so as to be movable in the axial direction within the groove width of the mounting grooves 11b. The connector main body 30 is configured to be loosely fitted. An internal thread 2b is formed on the inner peripheral surface of the other opening end.
2A and 2B show an assembled state in which the shell 2 is pivotally attached to the connector main body 30. FIG.
In this embodiment, the shell 2 is movable in the axial direction within the groove width of the mounting groove 11b of the connector main body 30, and when the female screw 2b and the male screw 13c are screwed together, the other open end of the shell 2 is the connector main body 30. The mounting groove 11b is configured to be substantially the same position as the end portion 13a or slightly inward, but is not particularly limited to this embodiment.

The fixing ring 3 is a crimping member formed of a metal material for mounting the coaxial cable 20 and the connector main body 30.
In the embodiment of the present application, the coaxial cable 20 is a laminated coaxial cable in which the outer peripheral surface of the inner insulator is covered with an aluminum laminate foil 6 and combined with the braided conductor 7 which is an outer conductor to further improve the shielding effect. is there.

FIG. 3A is a side view, partly in section, of the state where the connector of FIG. 1 is mounted on the coaxial cable 20, and the procedure for mounting the connector and the coaxial cable 20 according to the present invention will be described below.
First, the coaxial cable 20 is inserted into the fixing ring 3, and the insertion end 11 a of the connector main body 30 is braided with the aluminum laminated foil 6 and the braid 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 conductors 7 and insert. At this time, the coaxial cable 20 is inserted until it comes into contact with the insertion fastening portion 12a of the fastening ring 12 provided in the connector main body 11.

In the embodiment of the present application, when the coaxial cable 20 is stripped to a predetermined length, the end of the internal insulator 5 protrudes from the joint-side opening end 11d of the insertion hole 11c formed in the connector body 30. However, the present invention is not limited to the embodiment of the present application, for example, the joint-side opening end 11d of the insertion hole 11c. The portion is formed to be smaller than the circumference of the insertion hole 11c, 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. The central axis is inserted into the insertion hole. If the end of the internal insulator 5 inserted into the insertion hole 11c is in contact with the peripheral edge of the core wire hole by providing the core hole having the same axis as 11c, the internal insulator 5 Projected in the direction of joint 13 Coaxial cable connector that will not can be provided.
Further, as the central conductor of the connector, the core wire 4 of the coaxial cable 20 is used in this embodiment. In addition, you may make it cover the core wire 4 of a coaxial cable with the connector pin shape | molded separately as a center conductor.

As described above, when the connector main body 30 is inserted into the coaxial cable 20, the fixing ring 3 previously inserted into the coaxial cable 20 is pressure-bonded from the outside of the protective coating 8 at the insertion portion 11, and the braided conductor 7 and the connector main body 30 are connected. The contact is made using the elasticity of the protective coating 8 to finish the mounting.

At this time, according to the embodiment of the present application, a protruding portion 42 is provided on the entire circumference of the insertion tip portion 11 a of the insertion portion 11, and the circumferential diameter around the protruding portion 42 is inserted to press the fixing ring 3. Since it becomes larger than the cylinder diameter in the vicinity of the portion 11, the coaxial cable 20 is prevented from coming out of the connector body 30.
Further, as another embodiment of the present application, at least the outer peripheral surface of the insertion portion 11 of the connector body 30 is formed with the uneven means 10 and the uneven means 10 and the braided conductor 7 are brought into close contact with each other, Not only is it more difficult to pull out and pull out more reliably, but the mechanical connection to the rotational movement of the coaxial cable can be made stronger.
Furthermore, since the fixing property is improved as described above, the fixing property can be maintained well even in long-term use, and problems such as noise intrusion and emission from the fixing portion can be prevented.

A method of attaching the coaxial cable connector assembled in this way and the operation thereof will be described with reference to FIGS. In the figure, reference numeral 50 denotes an electronic device casing, for example, a television receiving amplifying device or a distributor as a television receiving device. Reference numeral 51 denotes an input / output connector seat.
First, the joint portion 13 of the coaxial cable connector of the present application is slidably locked to the connector seat 51 to be connected. Next, while pressing the shell 2 toward the base portion of the connector seat 51, the female screw 2b formed on the inner peripheral surface of the other end portion of the shell 2 and the outer peripheral surface of the other end portion of the connector body 30 were formed. The male screw 13c is screwed. At this time, the slit 13b is formed in the joint portion 13 and the outer peripheral diameter of the end portion 13a of the joint portion 13 is formed to be the same as or slightly larger than the inner peripheral diameter of the shell 2. As a result of this screwing, a pressing force in the axial center direction is generated at the joint 13 and the peripheral diameter on the other end side of the connector body 30 is varied, so that the coaxial cable connector is securely fixed to the connector seat 51. is there.
In particular, in the coaxial cable connector of the present application, the other end portion of the joint portion 13 of the connector main body 30 and the other end side of the shell 2 are screwed together, and this screwed portion, that is, the other end side tip portion of the connector main body, Since the base portion of the seat 51 is tightened toward the axial center, not only the mounting strength is further improved, but also the contact area between the inner peripheral surface of the joint portion 13 and the outer conductor of the connector seat 51 is maximized. Therefore, it is possible to provide a coaxial cable connector having excellent immunity characteristics suitable not only for high-frequency characteristics but also for digital broadcasting.
In addition, if the projection 13d is formed on the inner peripheral surface of the other end side (joining portion 13) of the connector main body 30 as shown in FIG. In addition, a coaxial cable connector having excellent electrical characteristics can be provided.

As described above, the coaxial cable connector of the present application is configured so that it can be easily fixed to the connector seat 51 so as not to be pulled out easily by screwing the shell 2 and the connector main body 30 without using a tool. Therefore, the shell 2 may be ring-shaped, but as shown in FIGS. 5A and 5B, a rotation operation for screwing the female screw 2b of the shell 2 and the male screw 13c of the connector body 30 is performed. In order to facilitate, knurling may be applied to the surface of the shell 2. Further, it may be formed in a hexagonal shape so that it can be firmly fixed with a simple tool as well as with a fingertip. Needless to say, knurling and a hexagonal shape may be combined.

Further, as an example of the above-described concavo-convex means 10, an example in which the insertion portion 11 is knurled as shown in FIG. 6A is shown, but the present invention is not limited to this example, and FIG. (C), a method of providing a plurality of grooves in the axial direction on the outer peripheral surface of the insertion portion 11 of the connector main body 30 may be used. It goes without saying that uneven means may be provided on the outer periphery of the raised portion 42.

The coaxial cable used to connect the coaxial cable connector of the present application is an example of an aluminum laminated coaxial cable in which an aluminum laminated foil 6 is covered on the outer peripheral surface of the inner insulator 5. It goes without saying that the same effect as in the embodiment of the present application can be obtained even if the connector main body is inserted between the inner insulator 5 and the braided conductor 7 of the coaxial cable. For example, the configuration of each part can be changed as appropriate without departing from the spirit of the present invention.

It is the fragmentary sectional view of the decomposition state which showed one example of the embodiment of the coaxial cable connector concerning the present invention. (A) is the fragmentary sectional view of the side surface of the coaxial cable connector shown in FIG. (B) is the fragmentary sectional view of the side surface when a shell is fastened. (A) is the side view made into the partial cross section of the state which mounted | wore the coaxial cable with the connector main body shown in FIG. 1, (b), (c) is a figure which shows the attachment state to an electronic device. (A), (b) shows the other Example of a coaxial cable connector. (A), (b) is an example which shows the different shape of a shell. (A), (b), (c) shows the Example which provided the uneven | corrugated means in the insertion part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 ... Shell, 2a ... Restriction part, 2b ... Female screw, 3 ... Adhesion ring, 4 ... Core wire, 5 ... Internal insulator, 6 ... Aluminum laminated foil (laminate foil), 7 ... Braided conductor, 8 ... Protective coating, 10 ... Concavity and convexity means, 11... Insertion portion, 11 a... Insertion tip, 11 b .. mounting groove, 11 c .. insertion hole, 11 d. 13a ... End face, 13b ... Slot, 13c ... Male screw, 13d ... Projection, 20 ... Coaxial cable, 30 ... Connector body, 42 ... Raised portion, 50 ... Electronic equipment casing, 51 ... Connector seat

Claims (2)

In the coaxial cable connector to be attached to the end of the coaxial cable,
A cylindrical connector body formed so that one side is connected to the braided conductor of the coaxial cable and the other side is slidably engaged with the external conductor to be connected;
A shell that is axially movable on the outer periphery of the connector body and pivotally mounted on one side so as to be rotatable in the circumferential direction;
An internal thread is formed on the inner peripheral surface of the other end portion of the shell,
The other side of the connector body, towards the end so that the peripheral diameter is larger than the inner circumference of the shell end to form a tapered shape, forms a slit in the vicinity of the end portion, the A protrusion is formed on the inner peripheral surface near the end, and a male screw that can be screwed into the female screw is formed on the outer peripheral surface near the end.
A coaxial cable connector characterized in that the peripheral diameter on the other side of the connector main body can be varied by a pressing force in the axial center direction generated by screwing the female screw of the shell and the male screw of the connector main body. 2. The coaxial cable connector according to claim 1, wherein at least a part or all of the outer shape of the shell is a hexagon from the other side to the one side of the shell.

Images