KR101286898B1 - Bnc connector with good stability of signal transmission - Google Patents

Abstract

PURPOSE: A BNC connector with excellent signal transmission stability is provided to solve inaccuracy and disconnection of the prior signal transmission, by using a connection member and a fixing member between a signal core and a cable as a medium. CONSTITUTION: A signal core (42) of a BNC jack and a signal core (21) of a BNC plug are electrically connected with each other. Fixing members (47,26) are connected to the rear of each signal core respectively. Insertion cores (49,28) of connection members (51,30) are inserted to the end of the fixing member. Compression portions (50,29) for compression combining with the cable are comprised in the rear of the connection member. The compression portion removes a part of coating of wires (46',24') in signal cables (46,24), by the compression by a tool. The wire, whose coating is removed, is electrically connected to the connection member. A part, in which coating is left, is stably compressed in the connection member.

Description

BNC connector with good stability of signal transmission}

The present invention relates to a BNC connector consisting of a BNC plug and a BNC jack. More particularly, the present invention relates to a BNC connector which improves signal transmission stability by preventing contact defects and prevents movement back and forth and is manufactured by a method of die casting, thereby improving productivity. It is about.

A coaxial cable is a cable for transmitting high frequency electrical signals. A Bayonet Neil Concelman (BNC) plug and a BNC jack are used to connect the ends of the coaxial cable. These BNC plugs and BNC jacks are connected to each other in a male and female form to make them easy to connect. They are also used for general analog signals, but are also used for high-speed data transmission, and are also used for transmitting CCTV signals or broadcast signals.

This BNC connector is composed of a BNC plug which is a female device and a BNC jack which is a male device. FIG. 1 shows such a BNC plug (a) and a BNC jack (b). As shown in FIG. 1, when the BNC jack (b) is inserted into the BNC plug (a) in a male-to-female coupling state and rotated in opposite directions, the engaging protrusion 1 protruding from the outer circumferential surface of the BNC jack is external to the BNC plug. Inserted into the engaging projection groove 2 formed in the cap main surface portion is seated in the corner portion of the engaging projection groove, the signal cores 3 and 4 therein are connected to each other by male and female coupling to transmit a signal.

At this time, the existing BNC plug (a) and the BNC jack (b) is connected to the cable 11 to the signal core 10, as shown in Figure 2 in the insertion hole 10 formed in the rear of the signal core 10 A method of inserting the wire of 11) and connecting it by soldering 12 (a) or a method of directly compressing using a tool (b) was used.

In order to increase the signal transmission rate in the BNC connector, the signal core is mainly made of, for example, brass and coated with gold on its outside. When connecting by soldering, the lead material differs from the material of the signal core. There is a problem in that it is difficult to accurately transmit signals and noise occurs due to the difference in conductivity, and there is a problem in that disconnection of wires occurs around the hardened portion of the solder, and assembly is inconvenient because soldering must be done one by one. There was a problem.

In addition, in the case of directly crimping with a tool, since the wire of a small diameter cable must be inserted into the rear insertion groove of the signal core and crimped with a tool, the diameter of the insertion groove is usually slightly larger than that of the cable wire. The signal core with such small diameter insertion hole is not easy to be cut and the circulation of plating liquid is not easy, so the electroplating of gold is not smooth and the gold plating is difficult to be made inside the insertion groove. Even if is connected, there was a problem that the signal transmission rate is not high. In addition, there is a problem that the signal core is deformed in the crimping part 10 because it must be forcibly pressed inwardly to the outside of the insertion groove of the signal core using a tool, and also confirmed that the connection between the signal core and the cable wire proceeds stably inside. There was a difficult problem.

In addition, in the case of using conventional soldering or direct crimping using a tool, there is a problem that the signal core is moved back and forth because the signal core is not stably supported, and only the wire is soldered or crimped while the cable is peeled off. This was a frequent problem and the need for improvement was great.

The present invention was developed to solve the problems of the prior art as described above. Instead of connecting the cable and the signal core by soldering or direct crimping, the present invention uses both a connecting member and a fixing member made of a high dielectric constant as a medium. By connecting, it solves the problems such as signal defect and noise caused by material difference, and there is no problem of disconnection, it is relatively simple to assemble, and the signal core is supported stably to provide a new structure of BNC connector which eliminates the possibility of defects.

In order to achieve the above object, the present invention, the coupling groove for coupling with the BNC jack, the outer cap is provided in the main surface portion, the plug inner body is inserted into the outer cap is installed, the plug is included in the inner body of the plug Plug insulator to insulate the signal core, is installed in close contact with the inner hole of the plug insulator, one side is connected to the signal cable, the other side is exposed in the opposite direction to the signal cable, the plug for transmitting the signal through the male and female jack signal core A BNC plug including a signal core; And

A jack main body provided with an outer circumferential surface for coupling with the BNC plug, a jack insulator included inside the jack main body, and installed in close contact with an inner hole of the jack insulator, one side of which is connected to a signal cable. A BNC connector comprising a BNC jack which is connected and is exposed in the opposite direction to the signal cable and comprises a jack signal core for carrying a signal through a male and female coupling with a plug signal core,

In connecting the signal cable to the plug signal core and the jack signal core, respectively, one side has an insertion core provided with a step so as to be fastened to a fixing member seated in a rear insertion hole of the plug signal core and the jack signal core, and on the opposite side. Provides a BNC connector characterized in that it is connected via a connection member provided with a crimping portion for crimping with the signal cable.

Referring to the features and advantages of the new structure of the BNC connector according to the present invention.

1. In the prior art, in connecting the cable and the signal core, the cable is inserted into the rear hole of the signal core and soldered or connected by using a tool. Because of the use of a material such as silver, it is difficult to accurately transmit signals, noise is generated, and the soldering part is hardened and the cable wires around the solder are cut, causing disconnection defects. It is difficult to make an accurate connection, the internal plating is not complete, the signal transmission rate is lowered, there is a problem that the disconnection of the cable wire occurs, there is a problem of signal core deformation failure. The present invention can solve problems of signal inaccuracy and disconnection by using a connecting member and a fixing member as a medium between the signal core and the cable.

2. In addition, since the connecting member is connected to the cable by crimping with a tool rather than assembling by soldering, the assembling work is relatively easy, and there is no fear of the cable falling out of the connecting member, and only the front part of the cable is removed. Since the sheath is pressed as it is, the sheath of the plastic material maintains the strength, thereby preventing the problem of wire breakage failure.

3. In addition, when inserting the connecting member into the signal core, the connecting member is seated in the rear insertion hole of the signal core, and then the front end of the fixing member is caught by the step provided in the insertion core of the connecting member. Desorption in the reverse direction can be prevented, and the tensioning action of the fixing member enables accurate signal transmission without disconnection.

4. In addition, since the main body of the BNC jack and the inner body of the BNC plug can be manufactured in a cylindrical shape, the main body of the BNC jack can be manufactured by injection molding (die-casting) instead of cutting. In addition, parts such as fixing members and connecting members can be easily manufactured by the method of press working, thereby reducing the overall manufacturing cost.

5. In addition, it is possible to solve the problem that the cable moves back and forth in the manufactured connector by using the cable support member, and also the problem that the outer handle cover portion rotates due to the groove formed on the cable support member.

1 is a perspective view illustrating a general BNC plug and a BNC jack.
2 shows a method of connecting a signal core and a signal cable in a conventional BNC plug and a BNC jack, in which (a) is connected by soldering and (b) is connected by direct compression.
3 is a cross-sectional view and an exploded cross-sectional view showing a BNC plug inner body part of a BNC connector according to an embodiment of the present invention.
4 is a cross-sectional view illustrating an BNC jack of a BNC connector according to an embodiment of the present invention, and an exploded cross-sectional view thereof.
5 is an exploded perspective view showing a cross-sectional view and an internal element showing that the BNC plug inner body portion and the BNC jack are coupled as a BNC connector according to an embodiment of the present invention.
Figure 6 is a perspective view of the coupling of each element of the BNC plug inner body portion and the BNC jack in the BNC connector according to an embodiment of the present invention.
7 is a perspective view showing in detail the connection form of the connection member and the signal core and the signal cable used for the BNC plug and BNC jack in the BNC connector according to an embodiment of the present invention.
8 is a perspective view showing in detail the fixing member used for the BNC plug and BNC jack in the BNC connector according to an embodiment of the present invention.
FIG. 9 shows that in one embodiment of the present invention, the crimp portion of the connection member and the signal cable cover the periphery of the crimp portion formed by the crimp with a heat shrink tube.
FIG. 10 illustrates a form in which the crimping portion is separated into a wire connection portion and a cover connection portion as another embodiment of the connection member in one embodiment of the present invention.
FIG. 11 shows that in one embodiment of the present invention, a rotation preventing groove is formed in the middle as another form of the cable support member.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, this is only to explain to those skilled in the art to easily understand and practice the present invention, and the scope of the present invention should not be construed as being limited to the scope of the following examples.

1 is a view showing a BNC connector used in the field of the present invention, the BNC connector is composed of a BNC plug (a) and a BNC jack (b), the engaging projection (1) formed on the outer peripheral surface of the main body of the BNC jack is a BNC plug It is inserted into the engaging groove (2) formed in the outer cap main surface portion of the fastening by rotation.

At this time, the signal of the cable is transmitted by the male and female coupling of the inner signal cores 3 and 4 connected to the cable. The material of the signal cores 3 and 4 generally uses brass having excellent electrical conductivity. It is used after plating.

Figure 2 shows a method of connecting the signal core 10 and the signal cable 11 in the conventional BNC plug and BNC jack (a) is connected by soldering (b) shows the connection by crimping. As shown in (a) of FIG. 2, the method of connecting using the solder 12 includes inserting a wire end from which the cable is removed from the signal cable 11 into the rear insertion hole 10 ′ of the signal core and soldering the periphery thereof. As a method of connecting by using a low electrical conductivity of the lead (or silver lead) material, there is a problem that the signal transmission is not accurate due to the material difference and noise occurs, and the solder 12 is hardened, the cutting defect in the peripheral portion There is a possibility that a bad problem occurs in which a signal is not transmitted. In addition, in the method of crimping as shown in (b), the wire end from which the cable is removed from the cable 11 is inserted into the insertion hole 10 'formed at the rear of the signal core 10, and the peripheral part is used with a tool or the like. In order to manufacture the signal core by cutting, it is difficult to manufacture the diameter of the insertion hole, and it is difficult to manufacture. Since the diameter is small after manufacture, it is not easy to circulate the plating solution. Since it is not made, there is a problem of poor signal transmission, and since the cable wire is inserted without the coating, there is a problem that wires having weak durability, such as silver, are easily broken.

3 is a cross-sectional view and an exploded cross-sectional view showing a BNC plug inner body part of a BNC connector according to an embodiment of the present invention.

As shown in FIG. 3, the BNC plug of the present invention has an outer cap (not shown) having a coupling groove for coupling with a BNC jack, and a plug inner body 20 inserted into the outer cap. And a plug insulator 22 and 23 included in the plug inner body 20 to insulate the plug signal core 21 and installed in close contact with an inner hole of the plug insulator. The other side is connected to the signal cable in the opposite direction and comprises a plug signal core 21 for transmitting the signal through the male and female coupling with the jack signal core, the signal cable 24 and the plug signal core ( In connection 21, one side is provided with an insertion shim 28 provided with a step 27 so as to be inserted into and fastened to the fixing member 26 seated in the rear insertion hole 25 of the plug signal shim 21 and the opposite side. Is used for crimping with signal cables Through the squeezed portion 29 is provided with the connecting member 30 is characterized in that the crimp connection.

In addition, in one embodiment of the present invention, the opposite side of the opening 31 of the BNC plug inner body 20 is closed by the cable support member 32 and the connection member (inside the inner surface of the cable support member 32) ( A plug first insulator 22 is intimately provided to insulate the plug 30 from the plug body 20 and the cable support member 32.

In addition, in an embodiment of the present invention, the plug signal core 21 is insulated from the plug body 20 toward the opening 31 of the BNC plug inner body and supports a part of the plug signal core 21 to support the plug. A plug second insulator 23 is provided to allow the end of the signal core 21 to protrude in the direction of the opening 31.

4 is a cross-sectional view illustrating an BNC jack of a BNC connector according to an embodiment of the present invention, and an exploded cross-sectional view thereof.

As shown in FIG. 4, the BNC jack of the present invention includes a jack main body 40 having a coupling protrusion 41 for coupling with the BNC plug on an outer circumferential surface thereof, the jack signal core ( 42, jack insulators 43, 44, and 45 for insulated, installed in close contact with the inner holes of the jack insulator, one end of which is connected to the signal cable 46 and the other of which is exposed in the opposite direction to the signal cable. It is configured to include a jack signal core 42 for transmitting a signal through the male and female coupling of, in connecting the signal cable 46 and the jack signal core 42 one side of the jack signal core 42 The insertion core 49 is provided with a step 48 to insert and fasten to the fixing member 47 seated in the rear insertion hole 42 ', and the opposite side is a crimping portion for crimping with the signal cable 46 ( It is characterized in that it is connected via a connecting member 51 provided with 50.

In addition, in one embodiment of the present invention, the opposite side of the opening 52 of the BNC jack is closed by the cable support member 53, the inner surface of the cable support member 53 is connected to the plug member 51 plug body A jack first insulator 43 for insulated from the 40 and the cable support member 53 is provided in close contact.

In addition, in an embodiment of the present invention, the jack signal core 42 is insulated from the jack body 40 toward the opening 52 of the BNC jack, and the jack signal core 42 is supported so that the end of the jack signal core 42 A jack second insulator 44 is provided to stably be supported in the direction of the opening 52.

In addition, in an embodiment of the present invention, a jack third insulator (not shown) covering the jack signal core as a whole to prevent the end of the jack signal core 42 from moving left and right and to facilitate coupling with the plug signal core 21 ( 45 may be further provided.

In the present invention, the insulator of the plug and the jack is preferably made of Teflon having a low dielectric constant, but may be made of another polymer resin material having a low dielectric constant.

5 is an exploded perspective view showing a cross-sectional view and an internal element showing that the BNC plug inner body portion and the BNC jack are coupled as a BNC connector according to an embodiment of the present invention. As shown in FIG. 5, in the BNC connector of the present invention, the signal core 42 of the BNC jack and the signal core 21 of the BNC plug are electrically connected to each other as the male and female, respectively. 47 and 26 are connected, and insertion cores 49 and 28 of the connecting member are inserted into and fastened to the end of the fixing member, and the connecting members 51 and 30 are provided with steps 48 and 27 to the fixing member. It should not be detached in the reverse direction after insertion. In addition, the rear of the connection member is provided with a crimping portion (50, 29) for crimping coupling with the cable signal cable 46, 24 to the crimping portion (50, 29) of the connection member due to the crimping by the tool This press-bonded, the pressing portion (50, 29) of the connecting member is thin so as to prevent the cable from being pulled out by crimping in a folding manner from each side inward. At this time, the crimping portion of the connecting member is elongated back and forth so that only part of the wires 46 'and 24' are removed from the signal cables 46 and 24 so that the stripped wire is electrically connected to the connecting member and the coating remains. The indented portion can be stably pressed onto the connecting member without fear of disconnection.

In the present invention, the connecting members 51 and 30 are made of a material having a high dielectric constant such as silver, gold or an alloy thereof, and are preferably manufactured by a press molding method, but may also be manufactured by cutting or injection.

Further, in the present invention, the signal cables 46 and 24 are supported by the cable support members 53 and 32, and the plug inner body and the rear of the jack body are closed by the cable support members.

The cable support members 53 and 32 used in the present invention are ones newly introduced in the present invention, which are not present in the existing BNC plugs or BNC jacks. In the present invention, the cable support member serves to close the inner elements from the rear while supporting the cable. In the past, the main body of the BNC plug and the main body and the rear closing element of the BNC jack have been manufactured by a cutting method integrally. When manufacturing by the cutting method takes a long manufacturing time and productivity is low, the manufacturing cost was high. In the present invention, it is possible to manufacture the cylindrical BNC plug body and the BNC jack body by injection molding by separating the rear closing element, that is, the cable support member. Accordingly, it is possible to mass-produce and reduce manufacturing costs even though components such as connecting members and fixing members are added.

In addition, there is also an effect that can be utilized in a variety of forms, such as soldering, crimping, terminal connection to the cable support member.

On the opposite side of the cable support members 53 and 32, openings 52 and 31 for male and female coupling of signal cores are formed, respectively. On the opening side, the signal core 42 of the BNC jack and the signal core of the BNC plug ( 21) are each connected to a male and female, electrically transmitting a signal.

In this case, the jack signal core 42 and the plug signal core 21 are provided through holes of an insulator for insulating the external body, respectively, and the insulators are formed of the first insulator 43 and 22 and the second insulator 44, respectively. 23). The first insulator is provided to be in close contact with the inner circumferential surfaces of the jack body and the plug body, respectively, and is connected to the signal core through a connection member through a hole in the center. In addition, the second insulator may have a shape different from that of the second insulator 44 of the BNC jack and the second insulator 23 of the BNC plug. That is, the second insulator 44 of the BNC jack is configured to support the jack signal core 42 as a whole, and the second insulator 23 of the BNC plug is configured to support only a part of the plug signal core 21 and the plug signal. The portion of the shim 21 not supported by the second insulator 23 is exposed and inserted into the jack signal core 42 to transmit an electrical signal. In this case, a third insulator 45 may be further provided to completely surround the jack signal core in order to prevent the end of the jack signal core 42 from moving from side to side and to facilitate coupling with the plug signal core 21. .

Figure 6 is a perspective view of the coupling of each element of the BNC plug inner body portion and the BNC jack in the BNC connector according to an embodiment of the present invention. As shown in FIG. 6, the elements included in the inner body 20 of the plug include a signal cable 24 in which a wire 24 'is crimpedly coupled to the connecting member 30 from the rear, and an insertion core of the connecting member ( The fixing member 26 to which the fixing member 28 is inserted and the plug signal core 21 to which the fixing member is inserted are arranged in a row, and the supporting elements are provided from the rear with the cable supporting member 32, the first insulator 22 and The second insulator 23 is arranged in order.

In addition, the element included in the BNC jack also has a signal cable 46 in which the wire 46 'is press-coupled to the connection member 51 from the rear side, and a fixing member 47 in which the insertion shim 49 of the connection member is inserted. ) And the jack signal cores 42 to which the fixing member is inserted are arranged in a row, and the supporting elements are provided from the rear with the cable supporting member 53, the first insulator 43 and the second insulator 44 (and optional In the order of the third insulator 45).

Although the first insulator and the second insulator (and optionally the third insulator) have been described as being separated from each other in one embodiment of the present invention, they may be provided integrally.

In addition, in one embodiment of the present invention, it has been described that the signal core 21 of the plug serves as a male and the signal core 42 of the jack serves as a female, but vice versa. It is included in a range.

7 is a perspective view showing in detail the connection form of the connection member and the signal core and the signal cable used for the BNC plug and BNC jack in the BNC connector according to an embodiment of the present invention. (It is shown in FIG. 7 that the BNC jack is related to the BNC plug.)

As shown in FIG. 7, the connection member 51 is fixed to the crimping portion 50 and the rear insertion hole 42 ′ of the signal core 42 to couple the signal cable 46 by crimping. It is inserted into the member 47 is composed of an insertion shim 49 for fixing the connecting member 51 and the end of the insertion shim 49 is a step for preventing the discharge in the reverse direction after being fastened to the fixing member ( 48).

The connection member 51 may be manufactured using silver or gold having a high dielectric constant for efficiency of signal transmission and prevention of noise generation, but is not limited thereto. Another material having a high dielectric constant may be used.

In addition, since the fixing member 47 should not be pushed back after being inserted into the insertion hole 42 formed at the rear of the signal core 42, the end of the insertion hole 42 has a stepped step for preventing rear discharge of the fixing member ( 59 is preferably provided in the circumferential inner direction.

8 is a perspective view showing in detail the fixing member used for the BNC plug and BNC jack in the BNC connector according to an embodiment of the present invention. The fixing member has a tapered shape in which the width becomes narrower from the rear to the front, and the front includes a plurality of side trimming lines 26 'and 47' in the longitudinal direction, and the rear end of the fixing member is in circular contact with each other in a circular shape. have. Such a fixing member may be manufactured by bending a plate shape manufactured through press working so that both ends are rounded and brought into contact with each other. Thus, after the insertion shims 28 and 49 provided at the front of the connecting member are inserted into the fixing member, the step 27 and 48 of the connecting member is caught in front of the insertion shim of the connecting member and is discharged back. You can prevent it.

FIG. 9 illustrates a heat shrink tube 58 around a crimping portion formed by crimping the crimping portions 29 and 50 and the signal cables 24 and 46 of the connecting members 30 and 51 in one embodiment of the present invention. Coated with. The heat shrink tube 58 is coated to further secure the connection of the crimping portion, and is contracted by applying heat with a dryer to secure the crimping portion.

FIG. 10 shows a form in which the crimping portion is separated into a wire connecting portion 29 ", 50" and a cable connecting portion 29 ', 50' as another form of the connecting member 30, 51 in one embodiment of the present invention. As shown in Fig. 10, the connecting member according to the present invention can crimp the signal cable in the state with the sheath instead of the sheath being removed. That is, by removing the sheath from only part of the front end of the signal cable and leaving the rest of the sheath in the crimp of the connecting member, crimping on both sides, the electrical signal is transmitted by the stripped wire and the sheath is not removed. Since the cable sheath of the plastic material maintains its strength, it can simultaneously achieve the effect of smooth transmission of electrical signals and elimination of the possibility of wire breakage.

FIG. 11 shows that the anti-rotation grooves 32 'and 53' are formed in the middle of the cable support members 32 and 53 in one embodiment of the present invention. The anti-rotation groove may be provided on the outside of the cable support member to prevent the external handle cover (not shown) portion, which functions as an insulation and a handle, from rotating, thereby further increasing the stability and robustness of the product.

As described above, the BNC connector composed of the BNC plug and the BNC jack according to the present invention is not a conventional soldering method or a direct crimping method for connecting cables and signal cores for signal transmission. There is no fear of signal cutting due to disconnection and no noise generation problem.

In addition, in the present invention, not only the plug outer cap but also the plug inner body and the jack body, which were conventionally manufactured by cutting, may be manufactured by injection molding (die casting) in a cylindrical shape, thereby increasing productivity and thus reducing the overall manufacturing cost. There are also advantages to be saved.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the appended claims. You will understand.

1: engaging projection 2: engaging projection groove
3, 4: signal core 10: signal core
11: signal cable 12: soldering
10 ': Insertion hole 10 ": Crimping part
20: plug inner body 21: plug signal core
22: plug first insulator 23: plug second insulator
24: signal cable 25: insertion hole
26: fixing member 26 ': side trimming line
27: step 28: insertion core
29: crimp part 29 ': cable connection part
29 wire connection 30 connection member
31: opening 32: cable support member
32: anti-rotation groove 39: plug outer cap
40: jack body 41: engaging projection
42: jack signal core 42 ': insertion hole
43: jack first insulator 44: jack second insulator
45 jack third insulator 46 signal cable
47: fixing member 47 ': side trimming line
48: step 49: insertion core
50: crimping part 50 ': cable connection part
50 ": Wire connection 51: Connection member
52: opening 53: cable support member
53 ': anti-rotation groove 58: heat shrink tubing
59: step

Claims (12)

An outer cap having a coupling groove for coupling with a BNC jack, a plug inner body inserted into and installed inside the outer cap, a plug insulator included in the plug inner body to insulate the plug signal core, and the plug A BNC plug installed in close contact with an inner hole of the insulator and having one end connected to the signal cable and the other side exposed in the opposite direction to the signal cable, the plug signal core including a plug signal core for transmitting a signal through a male and female jack signal core; And a jack main body provided with an outer circumferential surface for coupling with the BNC plug, a jack insulator included inside the jack main body, insulated from the jack signal core, and installed in close contact with an inner hole of the jack insulator. A BNC connector comprising: a BNC jack connected to a second cable, the BNC jack including a jack signal core for transmitting a signal through a male and female connection with a plug signal core, the other end being exposed in a direction opposite to the signal cable. In each connection to the jack signal core, one side has an insertion core provided with a step so as to be inserted into the fixing member seated in the plug signal core and the rear insertion hole of the jack signal core, and the other side for the crimp coupling with the signal cable BNC connector, characterized in that connected via a connecting member provided with a crimping portion.
The method of claim 1, wherein the opposite side of the opening of the BNC plug inner body is closed by a cable support member, the inner surface of the cable support member is in close contact with the plug first insulator for insulating the connecting member from the plug body and the cable support member. And a plug second insulator which insulates the plug signal core from the plug body and supports a part of the plug signal core so that an end of the plug signal core protrudes in the opening direction toward an opening of the BNC plug inner body. BNC connector. The method of claim 1, wherein the opposite side of the opening of the BNC jack is closed by a cable support member, the inner surface of the cable support member is provided in close contact with the jack first insulator for insulating the connecting member from the plug body and the cable support member; And a second jack for insulating the jack signal core from the jack main body and supporting the jack signal core so that the end of the jack signal core is stably supported in the opening direction. The method of claim 1, wherein a fixing member is connected to the rear of the plug signal core and the connector signal core, respectively, and an insertion core of the connecting member is inserted into and fastened to an end of the fixing member, and the connecting member is provided with a step so as to be inserted into the fixing member. BNC connector characterized in that it does not detach in the reverse direction. The method of claim 1, wherein the rear of the connection member is provided with a crimping portion for crimping with the cable, and the signal cable is crimped, and the crimping portion of the connecting member is crimped in a folding manner on both sides to prevent the cable from being pulled out. BNC connector, characterized in that. The method according to claim 5, wherein the crimping portion of the connecting member is formed long before and after the wire to remove only the part of the wire from the cable so that the wire is removed is electrically connected to the connecting member and the remaining part is stably without fear of disconnection BNC connector, characterized in that to be crimped to the connecting member. The BNC connector according to claim 1, wherein the BNC plug body and the BNC jack body are manufactured by injection molding. 2. The BNC connector according to claim 1, wherein an end of the insertion hole of the plug signal core and the jack signal core is provided with a step for preventing the fixing member from being discharged backward after being inserted into the insertion hole. The method of claim 1, wherein the fixing member has a tapered shape that becomes narrower from the rear toward the front, the front includes a plurality of side trimming lines in the longitudinal direction, the rear end is in contact with each other in a circular shape BNC connector. The BNC connector according to claim 1, wherein the crimp portion of the connection member and the periphery of the crimp portion formed by the crimping of the signal cable are covered with a heat shrink tube. The BNC connector according to claim 1, wherein the crimping portion is separated into a wire connecting portion and a cable connecting portion in the connecting member. The BNC connector according to claim 2 or 3, wherein an anti-rotation groove is formed in the cable support member.

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