55?
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`fa
`
`TRANSPERFECT
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`AFFIDAVIT OF ACCURACY
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`I, Alexandra Hermany, hereby certify that the following is, to the best of my
`knowledge and belief, a true and accurate translation of the enclosed document:
`“Japanese Publication No. 2002-15823, published on January 18, 2002.” from
`Japanese into English.
`
`Alexandra Hermany
`
`I
`
`I _“
`
`TransPerfect Translations, inc.
`700 st“ Street NW
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`Washington, DC 20001
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`Sworn to before me this
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`7th day of June 2013
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`NOTARY PUBLIC
`District of Columbia
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`OFFICES IN 80 CITIES WORLDWIDE
`
`

`
`
`
`(19) Japan Patent Office (JP)
`
`(12) Japanese Unexamined Patent
`Application Publication (A)
`
`
`(11) Japanese Unexamined Patent
`Application Publication Number
`
`(22)
`
`2002-015823
` (P2002-15823A)
`
`
`
`(43) Publication date: January 18, 2002
`
`
`Technical Indication
`P
`H
`
`Identification codes
`
`JPO file number
`
` FI
`
`
`
`
`
`
`
`(51) Int. Cl.7
`
` H
`
` 01 R 24/02
`
`
`
`H 01 R 17/04
`
`
`
`Request for examination not yet requested. Number of Claims: 6 (Total of 24 pages)
`
`(21) Application number
`
`2000-198608
`(P2000-198608)
`
`(71) Applicant
`
`000227892
`Nippon Antenna Co., Ltd.
`7–49–8 Nishioze, Arakawa-ku, Tokyo
`
`(22) Date of application
`
`June 30, 2000
`
`
`
`
`
`
`
`
`
`
`
`
`
`(72) Inventor
`
`
`
`(74) Agent
`
`Kazumi Tatsuzuki
`c/o Nippon Antenna Co., Ltd.
`4–7–4 Kita-machi, Hagi-shi, Saitama Prefecture
`
`
`
`100102635
`Yasuo Asami, Patent Attorney (Three others)
`
`11: Plug body
`
`12: Rotating fixing body
`
`13: Disc-shaped spring
`
`14: Ring-shaped
`spring
`
`
`
`
`
`
`(54) [Title of the Invention]
`A Coaxial Plug
`(57) [Abstract]
`[Problems] To prevent deterioration in insertion loss
`characteristic and reflection loss characteristics, even in state
`of loss coaxial plug.
`[Solutions]: A disc-shaped spring 13 is accommodated in a
`spring housing groove 11e of a plug body 11, and
`accommodated in a rotary mounting element 12. Thereby, a
`ring-shaped part 11c is accommodated in the main body
`accommodation part 12a. By conducting curling processing
`with curling processed part 11f, the rotary mounting element is
`fixed to the plug body in a rotatable manner 11. A ring-shaped
`spring 14 is accommodated in a spring housing part 12c of the
`rotary mounting element 12. Thereby, the electrical connection
`of the plug body 11 and the rotary mounting element 12 is
`conducted with the disc-shaped spring 13 existing between
`them, and the electrical connection of the rotary mounting
`element 12 and a coaxial connector is conducted with the ring-
`shaped spring 14 existing between them.
`
`
`
`
`

`
`
`
`Japanese Unexamined Patent Application 2002-15823 (P2002-15823A)
`
`(2)
`
`
`[Scope of Claims]
`[Claim 1]
`A coaxial plug is installed at the tip of a coaxial cable comprising of a ring-shaped part; a cylindrically–shaped curled part protrudes from one surface
`of the ring-shaped part; the plug body formed as a protrusion from the other surface of the aforementioned ring-shaped part, with a cable-insertion
`part, can be inserted between the internal insulator of said coaxial cable and the braided wire; a disc-shaped spring accommodated in the spring–
`housing groove located on one surface of said ring-shaped part; a rotary engagement part forms an almost cylindrical shape which protrudes inside
`the center part of the inner circumferential surface and the threaded mounting section; a rotary mounting element with a main body accommodation
`part wherein said ring-shaped part is accommodated at one end of the inner circumferential surface, with a spring–housing part formed at the other
`end as part of the inner circumferential surface; a ring-shaped spring accommodated within said spring–housing part: said curled part, post-curling
`processing, is engaged with said rotary engagement part in a rotatable manner, such that said rotary mounting element can rotate relative to said plug
`body.
`[Claim 2]
`The coaxial plug as in Claim 1 wherein said ring–shaped spring is formed by bending a band-shaped elastic metal plate into a ring shape.
`[Claim 3]
`A coaxial plug is installed at the tip of the coaxial cable comprising of a ring-shaped part; a cylindrically–shaped curled part protruding from one
`surface of the ring-shaped part; a plug body formed as a protrusion from the other surface of the aforementioned ring-shaped part, with a cable
`insertion part that can be inserted between the internal insulator of said coaxial cable and the braided wire; a rotary engagement part that forms an
`almost cylindrical shape which protrudes inside the center part of the inner circumferential surface and the threaded mounting section; a rotary
`mounting element with a main body accommodation part formed at one end of the inner circumferential surface, with the spring–housing part formed
`at the other end as part of the inner circumferential surface; a first ring-shaped spring accommodated within said main body accommodation part and
`inserted in said ring-shaped part; and the second ring-shaped spring accommodated within said spring–housing part: said curled part, post-curling
`processing, is engaged with said rotary engagement part in a rotatable manner, such that said rotary mounting element can rotate relative to said plug
`body.
`[Claim 4]
`The coaxial plug as in Claim 1 or Claim 3 wherein a stopper protrusion for stopping the spring contained in said spring housing part is formed at the
`tip of said spring housing part.
`[Claim 5]
`A coaxial plug is installed at the tip of the coaxial cable comprising a ring-shaped part; a cylindrically–shaped curled part protruded from one surface
`of the ring-shaped part; a plug body formed as a protrusion from the other surface of the aforementioned ring-shaped part, with a cable insertion part
`that can be inserted between the internal insulator of said coaxial cable and the braided wire; a rotary engagement part that forms an almost
`cylindrical shape which protrudes inside the center part of the inner circumferential surface and the spring housing part; a rotary mounting element
`with a main body accommodation part formed at one end of the inner circumferential surface, with the threaded mounting section formed at the other
`end part of the inner circumferential surface; a first ring-shaped spring accommodated within said main body accommodation part and inserted in
`said ring-shaped part; and the second ring-shaped spring accommodated within said spring–housing part: said curled part, post-curling processing, is
`engaged with said rotary engagement part in a rotatable manner, such that said rotary mounting element can rotate relative to said plug body.
`[Claim 6]
`The coaxial plug as in Claim 3 or Claim 5 wherein said ring-shaped spring is formed by bending a band-shaped elastic metal plate in a ring shape
` [Detailed Description of the Invention]
`[0001]
`[Technical Field of the Invention] The present invention relates to a coaxial plug installed at the tip of a coaxial cable.
`[0002]
`[Prior Art] In reception devices such as television satellite broadcasting tuners, a coaxial connector is installed and reception signals are inputted by
`fixing a coaxial plug installed at the tip of the coaxial cable to this coaxial connector. Fig. 34 shows the constitution of a conventional coaxial plug
`installed at the tip of a coaxial cable.
`[0003]
`The coaxial plug 300 shown in Fig. 34 comprises of a plug body 311 and a rotary mounting element 312 fixed in a rotatable manner to the plug body
`311. The rotary mounting element 312 consists of hexagonally–shaped nuts and a female screw thread cut on the internal circumferential surface to
`be screwed together with a coaxial connector. The plug body 311 is equipped with a ring–shaped part 311c, protruding part 311f supporting a rotary
`mounting element 312 in a rotatable manner which protrudes from one surface of ring–shaped part 311c, and a cable–insertion part 311that protrudes
`from the other surface of the ring–shaped part 311c. The cable insertion part 311a is to be inserted between the internal insulator of the coaxial cable
`and the braided wire; the stopper part 311b has a cross-sectional saw tooth shape formed at its tip and does not protrude from the coaxial cable.
`[0004]
`In order to install coaxial plug 300 into the coaxial cable, first an sheath at the tip of the coaxial cable is removed so that the internal insulator is
`exposed to the desired length. Further, the core wire is exposed to the desired length by removing the internal insulator.
`
`
`
`

`
`Japanese Unexamined Patent Application 2002-15823 (P2002-15823A)
`(3)
`
`The core wire processed in the coaxial cable and internal insulator are inserted from the back end of the cable insertion part 311a of the plug body
`311 such that the core wire is arranged almost at the center of the rotary mounting element 312. In this case, the cable insertion part 311a is inserted
`between the internal insulator of the coaxial cable and the braided wire such that the tip of the sheath of the coaxial cable is in contact with the
`interior of the cable contacting groove 311d formed on the other surface of the ring-shaped part 311c. In this state, a caulking ring 302 is positioned
`in the coaxial cable located between the ring-shaped part 311c and the stopper part 311b to process caulking on the caulking ring 302. By so doing,
`the coaxial cable is caulked into the cable insertion part 311a by the caulking ring 302 and the stopper part 311b is fixed not coming out of the
`coaxial cable.
`[0005]
`[Problems to be Solved by the Invention]
`The traditional coaxial plug 300 installed at the tip of the coaxial cable is fixed at the coaxial connector by bolting the rotary mounting element 312
`into the coaxial connector. In this case in the prior coaxial plug 300, the tip of the protruded part 311f is brought into contact with the tip of the
`coaxial connector such that the braided wire constituting the grounded coaxial cable is connected to the coaxial connector. The shell of the coaxial
`connector brought into contact constitutes the grounding. However, the screw connection may be loosened due to various causes. For example, in the
`coaxial plug 300, the rotary mounting element 312 may be loosened relative to the shell of the coaxial connector. In this case, the contact between the
`tip of the protruded part 311f and the shell of the coaxial connector is released such that connection due to the contact is lost between the two parts.
`Thus, it is grounded by connecting to the braided wire via the rotary mounting element 312 and the plug body 311 that are screwed into the coaxial
`connector. However, the rotary mounting element 312 is fixed in a rotatable manner to the plug body 311 so that there is a gap between the two parts
`to be rotatable. The problem is that the connection between the rotary mounting element 312 and the plug body 311 becomes incomplete due to the
`presence of this gap. If the connection between the rotary mounting element 312 and the plug body 311 becomes incomplete, the connection between
`the braided wire of the coaxial cable and the shell of the coaxial connector becomes incomplete so that the insertion loss characteristics and the
`reflection loss characteristics of the coaxial plug 300 are deteriorated and there is a problem of causing troubles of receiving signals.
`[0006]
`This mode will be explained with reference to the graphs shown in Fig. 35 through 38. Fig. 35 shows the insertion loss characteristics in the case
`when the coaxial plug 300 is securely screwed in the coaxial connector. With reference to this figure, the insertion loss becomes approximately 0.5dB
`or less over a broad band area of 2.5GHz, indicating satisfactory characteristics. Further, Fig. 36 shows the reflection loss characteristics in the case
`when the coaxial plug 300 is securely screwed into the coaxial connector. With reference to this figure, the reflection loss over a broad band of
`2.5GHz was approximately 23dB or greater, indicating satisfactory characteristics. Next, the insertion loss characteristics in the case when the
`coaxial plug 300 is fixed while the coaxial connector is loosened once are shown in Fig. 37. With reference to this figure, the insertion loss was
`significantly deteriorated in a lower frequency band area up to 0.5GHz. Further, Fig. 38 shows the reflection loss characteristics in the case when the
`coaxial plug 300 is fixed while the coaxial connector is loosened once. With reference to this figure, it is clearly shown that the reflection loss was
`significantly deteriorated over a frequency band area up to approximately 1.5GHz.
`[0007]
`Thus, the objective of the present invention is to provide a coaxial plug without deterioration of insertion loss characteristics and reflection loss
`characteristics even in the state when the coaxial plug is loosened.
`[0008]
`[Means for Solving the Problems]
`The inventors earnestly investigated in order to achieve the aforementioned objective. The first coaxial plug of this invention is a coaxial plug
`installed at the tip of the coaxial cable and comprises a ring-shaped part; a cylindrically–shaped curled part protruded from one surface of the ring-
`shaped part; a plug body formed as protruded from the other surface of the aforementioned ring-shaped part having a cable insertion part that can be
`inserted between the internal insulator of said coaxial cable and the braided wire; a disc-shaped spring accommodated in the spring – housing groove
`formed on one surface of said ring-shaped part; a rotary engagement part formed almost in a cylindrical shape which is protruded interior almost at
`the center part of the inner circumferential surface and its threaded mounting section; a main body accommodation part wherein said ring-shaped part
`formed at one end of the inner circumferential surface is accommodated; a rotary mounting element having the spring – housing part formed at the
`other end part of the inner circumferential surface; and a ring-shaped spring accommodated within said spring – housing part. The said curled part
`after curling processing is engaged in a rotatable manner with said rotary engaging part such that said rotary mounting element is rotatable relative to
`said plug body. Further, in the first coaxial plug of the present invention, said ring-shaped spring can be formed by bending an elastic band-shaped
`metallic plate into a ring shape.
`[0009]
`Further, the second coaxial plug of this invention that can achieve the aforementioned objective is a coaxial plug installed at the tip of the coaxial
`cable which comprises a ring-shaped part; a cylindrically–shaped curled part protruded from one surface of the ring-shaped part; a plug body formed
`as protruded from the other surface of the aforementioned ring-shaped part having a cable insertion part that can be inserted between the internal
`insulator of said coaxial cable and the braided wire; a rotary engagement part formed almost in a cylindrical shape which is protruded interior almost
`at the center part of the inner circumferential surface and its threaded mounting section; a main body accommodation part formed at one end of the
`inner circumferential surface; a rotary mounting element having the spring–housing part formed at the other end part of the inner circumferential
`surface; a first ring-shaped spring accommodated within said main body accommodation part in a state inserted in said ring-shaped part; and the
`second ring-shaped spring accommodated within said spring–housing part. The said
`
`
`

`
`Japanese Unexamined Patent Application 2002-15823 (P2002-15823A)
`(4)
`curled part after curling processing is engaged in a rotatable manner with said rotary engaging part such that said rotary mounting element is rotatable
`relative to said plug body. Further, in the first coaxial plug or in the second coaxial plug of the present invention, the stopper protrusion stopped by
`the spring accommodated in said spring–housing part can be formed at the tip of said spring–housing part.
`[0010]
`Further, the third coaxial plug of this invention that can achieve the aforementioned objective is a coaxial plug installed at the tip of the coaxial cable
`which comprises a ring-shaped part; a cylindrically–shaped curled part protruded from one surface of the ring-shaped part; a plug body formed as
`protruded from the other surface of the aforementioned ring-shaped part having a cable insertion part that can be inserted between the internal
`insulator of said coaxial cable and the braided wire; a rotary engagement part formed almost in a cylindrical shape which is protruded interior almost
`at the center part of the inner circumferential surface and its spring–housing part; a rotary mounting element having the main body accommodation
`part formed at one end of the inner circumferential surface and the spring–housing part formed at the other end part of the inner circumferential
`surface; a first ring-shaped spring accommodated within said main body accommodation part in a state inserted in said ring-shaped part; and the
`second ring-shaped spring accommodated within said spring–housing part. The said curled part after curling processing is engaged in a rotatable
`manner with said rotary engaging part such that said rotary mounting element is rotatable relative to said plug body. Further, in the second coaxial
`plug or the third coaxial plug of the present invention, said ring-shaped spring can be formed by bending an elastic band–shaped metallic plate into a
`ring shape.
`[0011]
`According to this invention, using a disc-shaped spring or a ring-shaped spring, the plug body and the rotary mounting element are connected and the
`rotary mounting element and the coaxial connector as the subject to be fixed are connected using a ring-shaped spring so that even if the rotary
`mounting element is loosened, it prevents connection of grounding from becoming incomplete. For this reason, even if the coaxial plug is loosened
`from the coaxial connector, the electrical characteristics of the coaxial plug are not deteriorated. In this manner, it can prevent connection of
`grounding from becoming incomplete in a simple configuration by using a disc-shaped spring and a ring-shaped spring or using two ring-shaped
`springs. Therefore, this can prevent elevation of cost as possible. Further, since the total length of the rotary mounting element becomes longer, it
`becomes easier to operate the rotary mounting element with fingers. As a result, a coaxial plug can be easily fixed in the coaxial connector which has
`been embedded in the wall.
`[0012]
`[Mode to Carry-out the Invention]
`Fig. 1 shows a first configuration example of the mode of operation of the coaxial plug of this invention and Fig. 2 shows disassembled assembly
`diagram. Fig. 3 shows a cross-sectional view when a coaxial plug in the first embodiment of the present invention is securely installed in the coaxial
`connector. Fig. 4 shows a cross-sectional view when installed loosely. Further, Fig. 5 through Fig. 8 show configurations of various parts of the
`coaxial plug in the first embodiment of the present invention.
`[0013]
`As shown in Fig. 1, the first coaxial plug in the embodiment of the present invention comprises a plug body 11 and a rotary mounting element 12
`which is fixed in a rotatable manner to the plug body 11. A plug body 11 made of metals comprises a ring-shaped part 11c formed in a ring shape as
`shown in Fig. 2 through Fig. 5, a curled part 11f supporting a rotary mounting element in a rotatable manner 12 protruded from one surface of the
`ring-shaped part 11c, and a cable insertion part 11a protruded from the other surface of the ring-shaped part 11c. Further, a through-hole is formed
`through the plug body 11 almost along the central axis. Furthermore, the cable insertion part 11a is tapered towards the tip so that it forms a portion
`to be inserted between the internal insulator of the coaxial cable and the braided wire. At the tip of the cable insertion part 11a, a stopper part 11b
`having a cross-sectional saw tooth shape is formed in a ring–shape to
`prevent it from coming out of the coaxial cable. In this case, on one side of the ring-shaped part 11c, a spring housing groove 11e is formed to
`contain a disc-shaped spring 13 formed in a disc shape. In contrast, a cable contact groove 11d is formed at the other surface of the ring-shaped part
`11c where the tip of the coaxial cable installed becomes in contact.
`[0014]
`The rotary mounting element 12 made of metals is shaped in a cylindrical form and rollet processing is applied on the other circumference for
`preventing from slipping. As shown in Fig. 2 and Fig. 6, a threaded mounting section 12b is cut to be screwed into the coaxial connector almost in
`the central portion on the inner circumferential surface of the rotary mounting element 12. Further, a main body accommodation part 12a is formed at
`one end of the inner circumferential surface of the rotary mounting element 12 to contain a ring-shaped part 11c of the plug body 11. A rotary
`engagement part 12d is formed protruded inwardly between the main body accommodation part 12a and the threaded mounting section 12b. This
`rotary engagement part 12d is a part to be engaged with the curled processed part 11f in a rotatable manner when the curled processed part 11f of the
`plug body 11 is processed by curling. Further, a ring-shaped spring 14 formed in a ring form is accommodated at the other end of the inner
`circumferential surface of the rotary mounting element 12. A latching protrusion 12e is formed in a ring form at the tip of the spring housing part 12c
`in order to prevent the ring-shaped spring from slipping off.
`[0015]
`In addition, the ring-shaped part 11c is inserted into the main body accommodation part 12a by inserting it from the side of the curled processed part
`11f to the rotary mounting element 12 while a disc-shaped spring 13 is accommodated in the spring housing groove 11e of the plug body 11 in the
`state shown in Fig. 2 and Fig. 5. If curling is applied to curl outwardly from the curling processed part 11f in this state, the curled part 11f after
`curling is engaged with the rotary engagement part 12d in a rotatable manner as shown in Fig. 3 and Fig. 4. Subsequently, a coaxial plug 1 can be
`assembled by installing the ring-shaped spring 14 into the spring housing part 12c of the rotary mounting element 12.
`
`
`
`

`
`Japanese Unexamined Patent Application 2002-15823 (P2002-15823A)
`(5)
`
`[0016]
`For the mounting of this coaxial plug 1 onto coaxial cable 3, sheath 31 on the leading end of coaxial cable 3 is removed such that inner insulator 32 is
`exposed only by a prescribed length, as shown in Fig. 1. Furthermore, inner insulator 32 is removed such that core wire 33 is exposed by a prescribed
`length. In this way, processed core wire 33 and inner insulator 32 of coaxial cable 3 are inserted from the aft end of cable insertion part 11a of plug
`body 11, and this arranges core wire 33 at the approximate center of rotary mounting element 12. The central conductor of coaxial cable 1 is
`structured from this core wire 33. At this time, as shown in Fig. 3 and Fig. 4, cable insertion part 11a is inserted between inner insulator 32 and
`braided wire 34 of coaxial cable 3, whereby braided wire 34 and cable insertion part 11a are electrically connected. In addition, as shown in Fig. 3
`and Fig. 4, the leading end of sheath 31 of coaxial cable 3 contacts cable contact channel 11d formed on another surface of ring-shaped part 11c. In
`this condition, onto coaxial cable 3 positioned between ring-shaped part 11c and slip-off stopper section 11b, there is positioned crimping ring 2 and
`performed crimp processing of crimping ring 2. In this way, as shown in Fig. 3 and Fig. 4, the coaxial cable is crimped onto cable insertion part 11a
`by crimping ring 2 and fixed such that slip-off stopper section 11b cannot remove from the coaxial cable.
`[0017]
`With coaxial plug 1 of the first implementation mode of this invention, the electrical connection between ring-shaped part 11c and rotary mounting
`element 12 is arranged to be performed by disc-shaped spring 13 interposed between them. This disc-shaped spring 13 is accommodated within
`spring housing channel 11e, and therefore it is not pressed to the point of becoming crushed flat and does not lose its spring operation. The detailed
`structure of this disc-shaped spring 13 is shown in Fig. 7 (a) and (b). Fig. 7 (a) is a plan view diagram of disc-shaped spring 13, and Fig. 7 (b) is a
`related side view diagram. As shown in these diagrams, disc-shaped spring 13 is formed by stamp cutout processing of a thin metal plate possessing
`elasticity, such as phosphor bronze. This disc-shaped spring 13 possesses spring pieces 13b comprising eight count of bent spring pieces, and these
`spring pieces 13b are formed to be integral by ring-shaped joining part 13a. In addition, the leading end of each spring piece 13b is bent in an L-
`shape.
`[0018]
`Furthermore, as shown in Fig. 3 and Fig. 4, coaxial plug 1 is installed to coaxial connector 50. This installation is performed by rotating rotary
`mounting element 12, and spiral attaching installation screw 12b of rotary mounting element 12 onto the male screw formed on the sheath of coaxial
`connector 50. In this case, the length of rotary mounting element 12 is formed to be long, such that there is ability to easily and reliably grasp rotary
`mounting element 12 with the fingers, even when coaxial connector 50 is established on a series unit embedded in such as a wall. When installing
`coaxial plug 1 to coaxial connector 50, rotary mounting element 12 and coaxial connector 50 are electrically connected by ring-shaped spring 14
`accommodated within spring housing 12c. The detailed structure of this ring-shaped spring 14 is shown in Fig. 8 (a), (b) and (c). Fig. 8 (a) is a plan
`view diagram of disc-shaped spring 14, Fig. 8 (b) is a related side view diagram, and Fig. 8 (c) shows the band-shaped metal plate that will form the
`ring-shaped spring. As shown in these diagrams, ring-shaped spring 14 is formed by stamp cutout processing a thin metal plate possessing elasticity,
`such as phosphor bronze, to a band shape, as shown in Fig. 8 (c). Subsequently, the spring is formed by executing a bending process to a ring shape
`as shown in Fig. 8 (a). On this ring-shaped spring 14, multiple spring pieces 14d are formed by stamp cutting of multiple stamp cutouts 14c. These
`spring pieces 14d are formed to be integral by first joining piece 14a and second joining piece 14b. In addition, at the time of bending to a ring-
`shaped spring pieces 14d are slightly bent to the inner side such that in cross-section an arc shape is formed.
`[0019]
`Moreover, as shown in Fig. 3 and Fig. 4, at the time coaxial plug 1 is installed to coaxial connector 50, braided wire 34, which is the ground for
`coaxial cable 3, is connected to cable insertion part 11a, and plug main body 11 is connected to rotary mounting element 12 with interposition of
`disc-shaped spring 13. Furthermore, rotary mounting element 12 is connected to coaxial connector 50 with interposition of ring-shaped spring 14. In
`this way, with coaxial plug 1 of the first implementation mode of this invention, when
`rotary mounting element 12 has been screw attached to coaxial connector 50, there is not formed a structure that connects to ground through a part by
`which the leading edge of coaxial connector 50 and coaxial plug 1 make contact.
`[0020]
`As shown in Fig. 3, when rotary mounting element 12 is screw attached without looseness to coaxial connector 50 and when coaxial plug 1 is
`installed to coaxial connector 50, the insertion loss characteristics and reflection loss characteristics of coaxial plug 1 are naturally favorable across a
`wide band. In addition, as shown in Fig. 4, even if rotary mounting element 12 is loosely connected against coaxial connector 50 and coaxial plug 1 is
`installed to coaxial connector 50, there will be reliable connecting between coaxial connector 50 and braided wire 34 of coaxial cable 3 by means of
`disc-shaped spring 13 and ring-shaped spring 14. For this reason, even if coaxial plug 1 becomes loosened, the insertion loss characteristics and
`reflection loss characteristics are favorable across a wide band.
`[0021]
`This condition is explained by referencing the graphs shown in Fig. 9 through Fig. 14. Fig. 9 shows the insertion loss characteristics when coaxial
`plug 1 of the first implementation mode of this invention is firmly screw attached to coaxial connector 50 as shown in Fig. 3. When referencing this
`diagram, it is understood that insertion loss across a wide band up to 2.5GHz is a favorable characteristic of approximately 0.5dB or less.
`Furthermore, Fig. 10 shows the reflection of loss characteristics when coaxial plug 1 of the first implementation mode of this invention is firmly
`screw attached to coaxial connector 50. When referencing this diagram, it is understood that reflection loss across a wide band up to 2.5GHz is a
`favorable characteristic of approximately 20dB or more. However,
`
`
`

`
`Japanese Unexamined Patent Application 2002-15823 (P2002-15823A)
`(6)
`
`in this case, coaxial plug 1 is mounted to the leading end of coaxial cable 3 of approximately 1m, and the reflection loss characteristics cyclically
`pulse due to a standing wave present in coaxial cable 3.
`[0022]
`Next, shown in figure 11 are the insertion loss characteristics when the primary embodiment of this invention, the coaxial plug 1, is attached to the
`coaxial connector 50 and loosened once. If one refers to this figure, one can see that the characteristics are good; despite being loosely attached, the
`insertion loss characteristics are less than approximately 0.5 dB across broadband of up to 2.5 GHz. Also, shown in figure 12 are the return loss
`characteristics when the primary embodiment of this invention, the coaxial plug 1, is attached to the coaxial connector 50 and loosened once. If one
`refers to this figure, one can see that the characteristics are good; despite being loosely attached, the return loss characteristics are more than
`approximately 20 dB across broadband of up to 2.5 GHz. However, in this case the coaxial plug 1 is also attached to the end of an approximately 1m
`coaxial cable and, as this coaxial cable 3 has standing waves occurring, the return loss characteristics the return loss characteristics are such that they
`undulate periodically.
`[0023]
`Next, shown in figure 13 are the insertion loss characteristics when the primary embodiment of this invention, the coaxial plug 1, is simply inserted
`without being screwed tight to the coaxial connector 50. If one refers to this figure, one can see that the characteristics are good; despite not being
`screwed tight, the insertion loss characteristics are less than approximately 0.6 dB across broadband of up to 2.5 GHz. Also, shown in figure 14 are
`the return loss characteristics when the primary embodiment of this invention, the coaxial plug 1, is simply inserted into the coaxial connector 50
`without being screwed tight. If one refers to this figure, one can see that the characteristics are good; despite not being screwed tight, the return loss
`characteristics are more than approximately 18 dB across broadband of up to 2.5 GHz. However, in this case the coaxial plug 1 is also attached to the
`end of an approximately 1m coaxial cable and, as this coaxial cable 3 has standing waves occurring, the return loss characteristics are such that they
`undulate periodically.
`[0024]
`Next, we will describe examples of the 2nd configuration of the primary embodiment of this invention, the coaxial plug. However, we will omit the
`description of the outward appearance of the secondary embodiment coaxial plug as its appearance is the same as the primary embodiment coaxial
`plug which was shown in figure 1. This invention’s secondary embodiment coaxial plug’s disassembly framework diagram is shown in figure 15.
`Also, the cross-sectional diagram of this invention’s secondary embodiment coaxial plug is shown in figure 16 while being securely attached to the
`coaxial connector; a cross-sectional diagram of the coaxial while being loosely attached can be found in figure 17. What is more, shown in figure 18
`an