JP2012038601A - Coaxial connector for lightning protection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coaxial connector 10 for lightning protection having a structure in which heat treatment (superheating process) such as brazing and soldering is not needed, employing a simple structure according to the present invention.SOLUTION: In a coaxial connector 10 for lightning protection, one internal conductor is divided into two (a first internal conductor 12 and second internal conductor 14), and the first internal conductor 12 and second internal conductor 14 divided into two connect with and hold another internal conductor (a third internal conductor 16). In a stub tube 24, a flange part 243 is provided on a connection side to a body 22 and the flange part 243 is connected to the body 22. When an insulator is one, the insulator is divided into two (a first insulator 18 and second insulator 20). While the internal conductor 12 is held in the first insulator 18, the second internal conductor 14 is held in the second insulator 20. The third internal conductor 16 is interposed between and held by the first internal conductor 12 and second internal conductor 14 in the state that they are held in the first insulator 18 and second insulator 20, and thereby, it is connected and held.

Description

  The present invention relates to a lightning protection coaxial connector used in electrical equipment and electronic equipment such as communication, and more particularly, to a structure that has a simple structure and does not require heat treatment (overheating process) such as brazing or soldering. Is.

In general, it is considered that a lightning protection circuit is preferably arranged in a substantially T-shape as disclosed in Patent Document 3.
Therefore, in general, the coaxial connector for lightning protection has a substantially T shape. That is, the lightning protection coaxial connector is structured to be connected to three connection objects (mating connector and cable), and two directions are signal lines and one direction is an earth line. The lightning protection coaxial connector includes at least two inner conductors, one or more insulators, one or more outer conductors, a body, and a stub tube. The two inner conductors are formed in a T shape by screwing or soldering. The body and the stub tube are formed in a T shape by brazing. The outer conductor is fixed to the body by press fitting.
The following is a literature on lightning coaxial connectors: Patent Document 1 (Japanese Patent Laid-Open No. 2001-203045) and Patent Document 2 (Japanese Patent Laid-Open No. 2003-304631), and Patent Document 3 (actual) in which a transmission line is short-circuited with a lightning arrester. Kaihei 5-88144).
According to the summary of Japanese Patent Laid-Open No. 2001-203045, it is an object to provide an arrester mounting structure for a coaxial connector that can easily and surely mount an arrester and can perform replacement of the arrester quickly and easily. An electrode portion 5 is provided in the inner contact 1 of the coaxial connector E having the inner contact 1 and the outer contact 2 concentrically formed, a screw hole 12 is provided in the outer contact 2, and an arrester G is inserted through the screw hole 12. The arrester G is fastened and fixed by an electrically conductive cap 13 having a male screw portion 14 that is in contact with the electrode portion 5 and screwed into the screw hole 12, and further, a screw hole is formed on the distal end side of the male screw portion 14 of the cap 13. The outer peripheral surface portion 17 having a smaller diameter than 12 is formed, and the coaxial connector arrester mounting structure in which the outer peripheral surface portion 17 and the outer peripheral surface 19 of the arrester G are fitted and held by the cylindrical holder 20 is opened. It is. According to the summary of Japanese Patent Application Laid-Open No. 2003-304631, for the purpose of providing a lightning arrester for a coaxial cable that can be directly installed on a through plate and easy to install, for connecting a cable through a through hole of the through plate 23 A nut 17 is screwed into the male threaded portion 16 of the connector 13 and firmly fixed to the through plate 23, and a plurality of arresters (not shown) are grounded to the centralized grounding plate 25 via ground wires 24, respectively. A lightning arrester for a coaxial cable that prevents potential difference from occurring at the ground electrode of the arrester is disclosed. According to the summary of Japanese Utility Model Laid-Open No. 5-88144, in a lightning arrester, a surge voltage below the discharge start voltage of the discharge gap passes through the lightning arrester, and the loss due to the capacity component increases as the frequency of the signal propagating through the transmission line increases. In order to solve the problem that the output voltage is limited when a signal with a large peak voltage is input, the transmission line is short-circuited in a direct current with a conductor such as a short tab or a coil whose impedance is infinite at the operating frequency. A structure is disclosed.

In the structure shown in the related art and the structures of Patent Document 1 and Patent Document 2, the connection between the internal conductors and the connection between the bodies are inevitably performed by soldering or brazing. Therefore, there is a concern that each part is exposed to a high temperature state for a certain period of time, causing thermal distortion deformation of each part, leading to poor connection.
Moreover, since each component is exposed to a high temperature state for a certain period of time, thermal degradation occurs, leading to a shortened life of each component.
Furthermore, in soldering or brazing, a certain amount of time is required for the work, and thus a lot of work time is required.

  The present invention has been made in view of such conventional problems, and does not provide a coaxial connector for lightning protection having a simple structure and a structure that does not require heat treatment (overheating process) such as brazing or soldering. It is what.

  The present object is a lightning protection coaxial connector having a substantially T-shape connected to three connection objects as described in claim 1, and two internal conductors connected to the two connection objects and the stub tube; At least one insulator holding one inner conductor, a body holding the insulator, one or more outer conductors attached to the body and connected to a connection object, and one inner conductor In the lightning protection coaxial connector having a stub tube that is held and connected to one connection object, one of the inner conductors is divided into two (first inner conductor and second inner conductor), and the first inner divided into two The conductor and the second inner conductor are connected to and held by the other inner conductor (third inner conductor), and the stub tube is provided with a flange portion on the connection portion side with the body, and the flange portion is connected to the body. When the number of the insulators is one, the insulator is divided into two (first insulator and second insulator), the first inner conductor is held by the first insulator, and the second inner conductor is The second insulator is held by the second insulator and connected and held by sandwiching the third inner conductor between the first inner conductor and the second inner conductor held by the first insulator and the second insulator. This can be achieved by using a coaxial connector for lightning protection.

The lightning protection coaxial connector according to claim 2, wherein the first inner conductor and the second inner conductor are provided with screw portions (male and female threads) for connecting and connecting each other, and the third inner conductor. Has a flange on the opposite side to the side to be connected to the object to be connected and a through-hole into which the male screw is inserted into the flange, and is held in the first insulator and the second insulator. By passing the male screw of one of the conductor and the second inner conductor through the through hole of the third inner conductor and screwing the female male screw of the first inner conductor and the second inner conductor, The coaxial connector for lightning protection according to claim 1, wherein the inner conductor, the second inner conductor, and the third inner conductor are connected and held.
The coaxial connector for lightning protection according to claim 3 is provided with a required number of holes in the flange portion of the stub tube, a female screw portion is provided in the body at a position corresponding to the hole, and the stub tube is provided by a screw member. The lightning protection coaxial connector according to claim 1, wherein the body is connected to the body.
Furthermore, the lightning-prevention coaxial connector according to claim 4 is characterized in that the outer conductor is formed integrally with the body, and the lightning-prevention coaxial connector according to claim 1, 2, or 3.
Furthermore, the coaxial connector for lightning protection according to claim 5 is provided with an engagement hole for receiving the second inner conductor or the third inner conductor in the stub tube, and the second inner conductor or the third inner conductor. 5. The lightning protection coaxial connector according to claim 1, wherein the contact portion is an elastic spring piece.

As is apparent from the above description, the connector 10 of the present invention provides the following excellent effects.
(1) As described in claim 1, a lightning arresting coaxial connector having a substantially T-shape connected to three connection objects, two internal conductors connected to the two connection objects and the stub tube, At least one insulator that holds one inner conductor, a body that holds the insulator, one or more outer conductors that are attached to the body and are connected to a connection object, and one inner conductor In addition, in the coaxial connector for lightning protection provided with a stub tube connected to one connection object, one of the inner conductors is divided into two (first inner conductor and second inner conductor), and the first inner conductor divided into two And the second inner conductor are connected to and held by the other inner conductor (third inner conductor), and the stub tube is provided with a flange portion on the connection portion side with the body, and the flange portion is attached to the body. Subsequently, when the number of the insulators is one, the insulator is divided into two parts (first insulator and second insulator), the first inner conductor is held by the first insulator, and the second inner conductor is Connected and held by holding the third inner conductor between the first inner conductor and the second inner conductor held by the second insulator and held by the first insulator and the second insulator. Because it is a coaxial connector for lightning protection, featuring a simple structure, there is no need to solder or braze each internal conductor or between the body and the stub tube. Each material (component) does not undergo thermal strain deformation, does not lead to poor connection, and the working time is shortened.
(2) The coaxial connector for lightning protection according to claim 2, wherein the first inner conductor and the second inner conductor are provided with screw portions (male screw and female screw) for connecting and connecting each other, 3 The internal conductor is provided with a flange on the opposite side to the side to be connected to the connection object, and is provided with a through-hole into which the male screw is inserted into the flange, and is held by the first insulator and the second insulator. By passing the male screw of one of the first inner conductor and the second inner conductor through the through hole of the third inner conductor, and screwing the female male screw of the first inner conductor and the second inner conductor. 2. The lightning protection coaxial connector according to claim 1, wherein the first inner conductor, the second inner conductor, and the third inner conductor are connected and held. Connection and body and scan There is no need for soldering or brazing to connect the tube, and since heatlessness is achieved, each material (component) does not undergo thermal strain deformation, which does not lead to poor connection and shortens the work time. become.
(3) The coaxial connector for lightning protection as set forth in claim 3, wherein a required number of holes are provided in the flange portion of the stub tube, an internal thread portion is provided in a position corresponding to the hole in the body, and the stub is provided by a screw member. 3. The lightning protection coaxial connector according to claim 1, wherein the tube and the body are connected to each other, and soldered to the connection between the internal conductors and the connection between the body and the stub tube with a simple structure. No brazing is required and heatlessness is realized, so that each material (component) does not undergo thermal strain deformation, which does not lead to poor connection, and the working time is shortened.
(4) The lightning-prevention coaxial connector according to the fourth aspect is the lightning-prevention coaxial connector according to the first, second, or third aspect, wherein the outer conductor is formed integrally with the body. With a simple structure, there is no need to solder or braze the connections between the internal conductors or between the body and the stub tube, and because it is heatless, each material (component) does not undergo thermal strain deformation. It will not lead to poor connection, reduce work time, reduce capital investment, achieve high shielding characteristics, low-IM (intermodulation distortion), and connect with surface contact. Stabilization of contact resistance and low-IM (intermodulation distortion) can be realized.
(5) In the coaxial connector for lightning protection according to claim 5, an engagement hole into which the second inner conductor or the third inner conductor enters is provided in the stub tube, and the second inner conductor or the third inner conductor is provided. 5. The lightning protection coaxial connector according to claim 1, wherein the contact portion is an elastic spring piece, so that the connection between each internal conductor and the body and stub can be achieved with a simple structure. There is no need to solder or braze the pipes, and since heatlessness is achieved, each material (component) does not undergo thermal strain deformation, which does not lead to poor connection and shortens the work time. Therefore, capital investment can be reduced, high shielding characteristics and low-IM (intermodulation distortion) can be realized, and contact resistance stabilization and low-IM (intermodulation distortion) can be achieved by connecting with surface contact. Realization is possible.

(A) It is a perspective view of the coaxial connector for lightning protection of this invention. (B) It is a perspective view in the state where three internal conductors (a first internal conductor, a second internal conductor, and a third internal conductor) are connected. (C) It is a perspective view in the state where three connected inner conductors (first inner conductor, second inner conductor, third inner conductor) are held by two insulators (first insulator, second insulator). (D) It is sectional drawing of the coaxial connector for lightning protection. FIG. 3A is a perspective view of a first inner conductor. (B) It is sectional drawing of a 1st internal conductor. (C) It is a perspective view of the 2nd inner conductor. (D) It is sectional drawing of a 2nd internal conductor. (E) It is a perspective view of the 3rd inner conductor. (F) It is sectional drawing of the 3rd inner conductor. (A) It is a perspective view of a 1st insulator. (B) It is sectional drawing of a 1st insulator. (C) It is a perspective view of a 2nd insulator. (D) It is sectional drawing of a 2nd insulator. (A) It is the perspective view of the body seen from the stub pipe attachment direction. (B) It is the perspective view of the body seen from the opposite side to the stub pipe attachment direction. (C) It is sectional drawing of a body. (A) It is a perspective view of a stub tube. (B) It is sectional drawing of a stub pipe | tube.

A feature of the present invention is a lightning protection coaxial connector 10 having a substantially T-shape connected to three connection objects, two internal conductors connected to two connection objects and a stub tube 24, and one internal At least one insulator for holding a conductor, a body 22 for holding the insulator, one or more external conductors attached to the body 22 and connected to a connection object, and one inner conductor In addition, in the lightning protection coaxial connector 10 including the stub tube 24 connected to one connection object, one of the inner conductors is divided into two (first inner conductor 12 and second inner conductor 14). The first inner conductor 12 and the second inner conductor 14 are connected to and held by the other inner conductor (third inner conductor 16). When the number of the insulators is one, the insulator is divided into two (the first insulator 18 and the second insulator 20), and the first inner conductor is provided. 12 is held by the first insulator 18, the second inner conductor 14 is held by the second insulator 20, and the first inner conductor 12 is held by the first insulator 18 and the second insulator 20. The lightning protection coaxial connector 10 is characterized in that the third inner conductor 16 is connected and held by sandwiching the third inner conductor 16 with the second inner conductor 14.
That is, the first inner conductor 12 and the second inner conductor 14 are provided with screw portions (male screw 122 and female screw 142) for connecting and connecting to each other, and the third inner conductor 16 is to be connected. A flange 162 is provided on the opposite side to the side to be connected to an object, and a through hole 163 into which the male screw 122 is inserted is provided in the flange 162, and the first insulator 18 and the second insulator 20 are held in the first state. The male screw 122 of one of the first inner conductor 12 and the second inner conductor 14 is passed through the through hole 163 of the third inner conductor 16, and the female male screw of the first inner conductor 12 and the second inner conductor 14 is passed. The first inner conductor 12, the second inner conductor 14, and the third inner conductor 16 are connected and held by screwing 122 and 142.

  The lightning protection coaxial connector of the present invention will be described with reference to FIGS. FIG. 1A is a perspective view of a coaxial connector for lightning protection according to the present invention, and FIG. 1B is a perspective view of a state where three internal conductors (first internal conductor, second internal conductor, and third internal conductor) are connected. (C) is a state in which three connected inner conductors (first inner conductor, second inner conductor, third inner conductor) are held by two insulators (first insulator, second insulator). It is a perspective view, (D) is sectional drawing of the coaxial connector for lightning protection. 2A is a perspective view of the first inner conductor, FIG. 2B is a sectional view of the first inner conductor, FIG. 2C is a perspective view of the second inner conductor, and FIG. It is sectional drawing of an internal conductor, (E) is a perspective view of a 3rd internal conductor, (F) is sectional drawing of a 3rd internal conductor. 3A is a perspective view of the first insulator, FIG. 3B is a sectional view of the first insulator, FIG. 3C is a perspective view of the second insulator, and FIG. 3D is a sectional view of the second insulator. FIG. 4A is a perspective view of the body viewed from the stub tube mounting direction, FIG. 4B is a perspective view of the body viewed from the side opposite to the stub tube mounting direction, and FIG. 4C is a cross-sectional view of the body. is there. FIG. 5A is a perspective view of the stub tube, and FIG. 5B is a cross-sectional view of the stub tube.

  The coaxial connector 10 for lightning protection of the present invention includes at least three inner conductors 12, 14, 16, two insulators 18, 20, a body 22, and a stub tube 24.

  The components of the lightning protection coaxial connector 10 of the present invention will be described with reference to the drawings. First, the three inner conductors 12, 14, and 16 will be described. The three inner conductors 12, 14, and 16 are made of metal and are manufactured by a known press working. As the material of the three inner conductors 12, 14, 16 is required to have springiness, conductivity, etc., examples thereof include brass, beryllium copper, phosphor bronze and the like. Any two of the three inner conductors 12, 14 and 16 (12 and 14 in this embodiment) are held in the insertion holes 181 and 201 of the two insulators 18 and 20, respectively. Hereinafter, the three inner conductors 12, 14, and 16 will be described.

  First, the first inner conductor 12 will be described. The first inner conductor 12 has a substantially cylindrical shape, and has a contact portion 121 that contacts a connection object on one side and a screw portion 122 on the other side. The connection object of this embodiment is a mating connector, and the screw portion 122 of this embodiment is a female screw. In the vicinity of the contact portion 121, an engagement portion 123 that engages with the first insulator 18 is provided.

  The contact portion 121 is a portion that comes into contact with the contact of the mating connector and has a hole shape in this embodiment, and the mating contact is inserted into the hole and comes into contact therewith. The shape and size of the contact portion 121 is appropriately designed so as to obtain a stable connection along the shape of the mating contact.

  Second, the second inner conductor 14 will be described. The second inner conductor 14 also has a substantially cylindrical shape, and has a contact portion 141 that contacts a connection object on one side and a screw portion 142 on the other side. The connection object of this embodiment is a mating connector, and the screw portion 142 of this embodiment is a male screw. An engaging portion 143 that engages with the second insulator 20 is provided in the vicinity of the contact portion 141.

  The contact portion 141 is a portion that comes into contact with the contact of the mating connector and has a hole shape in this embodiment, and the mating contact is inserted into and contacted with the hole. The shape and size of the contact portion 141 is appropriately designed so as to obtain a stable connection along the shape of the mating contact.

The engaging portions 123 and 143 of the first inner conductor 12 and the second inner conductor 14 are respectively connected when the screw portions 122 and 142 of the first inner conductor 12 and the second inner conductor 14 are screwed together. The first insulator 18 and the second insulator 20 are engaged with the first insulator 18 and the second insulator 20, and the first inner conductor 12 and the second inner conductor 14 hold the first insulator 18 and the second insulator 20 by sandwiching them. The sizes and shapes of the engaging portions 123 and 143 are appropriately designed in consideration of such a role, workability, strength, and the like.
In the present embodiment, the screw portion of the first inner conductor 12 is a female screw and the screw portion of the second inner conductor 14 is a male screw.

  Lastly (third), the third inner conductor 16 will be described. The third inner conductor 16 also has a substantially cylindrical shape, and has a contact portion 161 that contacts a connection object on one side and a flange 162 on the other side. The connection object of this embodiment is a stub tube 24. The flange 162 is provided with a through hole 163 into which the male screw 142 of the second inner conductor 14 is inserted.

  The contact portion 161 is a portion that comes into contact with the stub tube 24 and is a spring piece having elasticity in the present embodiment, and the spring piece is inserted into the engagement hole 242 of the stub tube 24 and comes into contact therewith. The shape and size of the contact portion 161 are appropriately designed so as to obtain a stable connection along the shape of the stub tube 24.

  Next, the 1st insulator 18 and the 2nd insulator 20 are demonstrated. The first insulator 18 and the second insulator 20 are electrically insulating plastics, and are manufactured by injection molding according to a known technique. The material is appropriately selected in consideration of dimensional stability, heat resistance, workability, cost, and the like. However, in general, polytetrafluoroethylene (PTFE), polyphenylene sulfide (PPS), liquid crystal polymer (LCP), polyamide (9TPA, 66PA, 46PA), polybutylene terephthalate (PBT), polycarbonate (PC), and these Mention may be made of synthetic materials. The first insulator 18 and the second insulator 20 have a substantially cylindrical shape, and in this embodiment, the first insulator 18 and the second insulator 20 are line-symmetric with respect to the axis line with which they contact each other.

  The first insulator 18 and the second insulator 20 are provided with insertion holes 181 and 201 into which the first inner conductor 12 and the second inner conductor 14 are inserted. The insertion holes 181 and 201 may be provided with the first inner conductor 12 and the second inner conductor 14, and workability, strength, and dielectric constant along the shapes of the first inner conductor 12 and the second inner conductor 14. Design appropriately considering the above.

  The first insulator 18 and the second insulator 20 are provided with locking portions 182 and 202 for engaging and positioning the engaging portions 223 and 223 of the body 22 on the outer periphery on one side, and the other side on the other side. Notches 183 and 203 for escaping the flange 162 of the third inner conductor 16 are provided. The size and shape of the notches 183 and 203 may be anything as long as they can escape the flange 162, but are appropriately designed in consideration of shielding properties, workability, strength, impedance, and the like.

  The locking portions 182 and 202 of the first insulator 18 and the second insulator 20 are connected to the body 22 when the screw portions 122 and 142 of the first inner conductor 12 and the second inner conductor 14 are screwed together. The first insulator 18 and the second insulator 20 are held by sandwiching the body 22 therebetween. The size and shape of the locking portions 182 and 202 are appropriately designed in consideration of such role, workability, strength, impedance, and the like.

  Next, the body 22 will be described. The body 22 is made of metal, and is manufactured by known techniques such as casting and cutting. As these materials, in consideration of dimensional stability, workability, strength, etc., copper alloy, zinc die cast, aluminum die cast, etc. Can be mentioned.

  The body 22 has a substantially cylindrical shape, and both end portions are cylindrical and the central portion is a quadrangle. The body 22 is provided with a through hole 222 through which the first insulator 18 and the second insulator 20 enter. Engaging portions 223 and 223 are provided in the mounting hole 222 at positions corresponding to the locking portions 182 and 202 of the first insulator 18 and the second insulator 20. The size and shape of the mounting hole 222 may be any size as long as the first insulator 18 and the second insulator 20 are inserted and can be fitted to the mating connector. The mounting hole 222 may be attached to the first insulator 18, the second insulator 20, or the mating connector. Along with this, it is designed appropriately in consideration of connection stability, workability, strength, impedance and the like. The engaging portions 223 and 223 are engaged with the first insulator 18 and the second insulator 20 when the screw portions 122 and 142 of the first inner conductor 12 and the second inner conductor 14 are screwed together. The first insulator 18 and the second insulator 20 are held by the first insulator 18 and the second insulator 20 sandwiching the body 22 by engaging with the portions 182 and 202. Therefore, the size and shape of the engaging portions 223 and 223 are appropriately designed in consideration of such role, workability, strength, impedance, and the like.

  At both ends of the body 22, external conductor portions 221 for making contact with the external conductor of the mating connector are formed integrally with the body 22 so as not to be press-fitted. The shape and size of the external conductor portion 221 may be designed as appropriate in consideration of connection stability, workability, strength, and the like as long as it can contact the external conductor of the mating connector.

  A fitting hole 225 into which the stub tube 24 is inserted is provided in the rectangular central portion of the body 22. The shape and size of the insertion hole 225 may be appropriately designed in consideration of airtightness, workability, strength, impedance, etc., as long as the stub tube 24 can be inserted and the three inner conductors 12, 14, 16 can be connected. In addition, a fixing means for fixing the stub tube 24 is provided at the rectangular central portion of the body 22. In this embodiment, the fixing means is fixed by screws (hexagon socket head bolts). Therefore, a required number of female screw portions 224 are provided in the rectangular central portion of the body 22. As the fixing means, any method may be used as long as it is good in workability and does not apply heat, but is appropriately designed in consideration of strength, workability, impedance, and the like.

  Next, the stub tube 24 will be described. The stub tube 24 is made of metal, and is manufactured by known techniques such as casting and cutting. In view of dimensional stability, workability, strength, etc., these materials include zinc die cast and aluminum die cast. be able to. The stub tube 24 has a substantially cylindrical shape.

  The stub tube 24 is provided with a flange portion 243 on one side, and the flange portion 243 has a hole 244 of a size that allows a screw (hexagon socket head bolt) to be inserted in a position corresponding to the female screw portion 224 of the body 22. Is provided. Further, the flange 243 protrudes somewhat in a cylindrical shape so as to enter the insertion hole 225 on the body 22 side.

  The stub tube 24 is integrally provided with a contact portion 241 in contact with the third inner conductor 16 on the flange portion 243 side. The contact portion 241 is provided with an engagement hole 242 so that the third inner conductor 16 can enter. The shape and size of the contact portion 241 and the engagement hole 242 only need to be in contact with the third inner conductor 16, and are appropriately designed in consideration of connection stability, workability, strength, impedance, and the like.

  The other side of the stub tube 24 is structured to be connected to a connection object. In this embodiment, a screw is formed to connect to the ground wire, and the ground wire is sandwiched by using a washer or nut as another component.

Finally, the assembly procedure of the lightning protection coaxial connector 10 of this embodiment will be described.
First, the first inner conductor 12 is inserted into the first insulator 18, and the second inner conductor 14 is inserted into the second insulator 20.
Secondly, the first insulator 18 having the first inner conductor 12 inserted therein and the second insulator 20 having the second inner conductor 14 inserted into the body 22 are respectively inserted into the mounting holes 222 from both ends, and The third inner conductor 16 is inserted through the insertion hole 125, and the male screw 142 of the second inner conductor 14 is inserted so as to enter the through hole 163 of the third inner conductor 16, and the first inner conductor 12 and the second inner conductor Fourteen screw parts 122 and 142 are screwed.
Finally, the stub tube 24 is fixed to the body 22 with screws (hexagon socket head bolts).

  In the present embodiment, the first inner conductor 12 and the second inner conductor 14 are brought into contact with the mating connector, and the third inner conductor 16 is connected to the stub rod 24. However, the first inner conductor 12 Even if the third inner conductor 16 is brought into contact with the mating connector and the second inner conductor 14 is connected to the stub bar 24, the third inner conductor 16 and the second inner conductor 14 are brought into contact with the mating connector. The first inner conductor 12 may be connected to the stub bar 24. That is, all of the components described here have a structure in which the first inner conductor 12 and the second inner conductor 14 are screwed together. In the present embodiment, the contact portions 121 and 141 of the first inner conductor 12 and the second inner conductor 14 have a socket structure, but may have a pin structure.

  The present invention relates to a lightning protection coaxial connector used in electrical equipment and electronic equipment such as communication, and more particularly, to a structure that has a simple structure and does not require heat treatment (overheating process) such as brazing or soldering. Is.

DESCRIPTION OF SYMBOLS 10 Lightning protection coaxial connector 12 1st inner conductor 121 Contact part 122 Screw part 123 Engagement part 14 2nd internal conductor 141 Contact part 142 Screw part 143 Engagement part 16 3rd internal conductor 161 Contact part 162 Flange 163 Through-hole 18 1st 1 Insulator 181 Insertion hole 182 Locking part 183 Notch part 20 Second insulator 201 Insertion hole 202 Locking part 203 Notch part 22 Body 221 External conductor part 222 Mounting hole 223 Engagement part 224 Female screw 225 Insertion hole 226 Screw part 24 Stub Tube 241 Contact portion 242 Engagement hole 243 Flange portion 244 Hole 26 Fitting port

Claims (5)

A lightning protection coaxial connector having a substantially T-shape connected to three connection objects,
Two internal conductors connected to two connection objects and a stub tube, at least one insulator holding one internal conductor, a body holding the insulator, and a connection object attached to the body and connected to the body In a coaxial connector for lightning protection, comprising one or more outer conductors connected to each other and a stub tube that holds one inner conductor and connects to one connection object,
One inner conductor is divided into two (first inner conductor and second inner conductor), and the first inner conductor and second inner conductor divided into two are connected and held with the other inner conductor (third inner conductor). And
In the stub tube, a flange portion is provided on the connection portion side with the body, the flange portion is connected to the body,
When the number of the insulators is one, the insulator is divided into two (first insulator and second insulator), the first inner conductor is held by the first insulator, and the second inner conductor is held by the second insulator. Hold on
A lightning protection coaxial, wherein the first inner conductor and the second inner conductor held in the first insulator and the second insulator are connected and held by sandwiching the third inner conductor. connector. The first inner conductor and the second inner conductor are provided with screw portions (male screw and female screw) for connecting and connecting each other,
The third inner conductor is provided with a flange on the side opposite to the side to be connected to the connection object and a through hole into which the male screw enters the flange,
The male screw of either the first inner conductor or the second inner conductor held in the first insulator and the second insulator is passed through the through hole of the third inner conductor, and the first inner conductor 2. The lightning protection element according to claim 1, wherein the first inner conductor, the second inner conductor, and the third inner conductor are connected and held by screwing a male and female screw of the conductor and the second inner conductor. Coaxial connector. A required number of holes are provided in a flange portion of the stub tube, a female screw portion is provided in a position corresponding to the hole in the body, and the stub tube and the body are connected by a screw member. Item 3. The lightning protection coaxial connector according to Item 1 or 2. The coaxial connector for lightning protection according to claim 1, wherein the outer conductor is formed integrally with the body. An engagement hole into which the second inner conductor or the third inner conductor enters is provided in the stub tube, and a contact portion of the second inner conductor or the third inner conductor is a spring piece having elasticity. The lightning protection coaxial connector according to claim 1, 2, 3, or 4.

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