CN212391637U - Single-core optical fiber connector plug - Google Patents
Single-core optical fiber connector plug Download PDFInfo
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- CN212391637U CN212391637U CN202021132489.5U CN202021132489U CN212391637U CN 212391637 U CN212391637 U CN 212391637U CN 202021132489 U CN202021132489 U CN 202021132489U CN 212391637 U CN212391637 U CN 212391637U
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Abstract
The utility model discloses a single core fiber connector plug. The utility model discloses a single core fiber plug includes insulator, metal sleeve, ceramic bushing, sealing washer, hole front gasket, hole back insulator, big spring A, hole back gasket, jump ring A, phi 2.5 fiber insertion needle A before plug housing assembly, hole. The optical fiber plug can reduce the insertion loss and return loss of optical signals, finally realizes complete transmission of the signals, has the detachable optical fiber contact body and the quick plugging function, considers the factors such as appearance, weight, maintenance cost and the like, ensures the process rationality and reduces the product cost.
Description
Technical Field
The utility model belongs to the technical field of fiber connector, a single core fiber connector plug is provided very much. The method is applied to the fields of high-speed data transmission systems such as optical fiber communication, photoelectric information conversion, ships, weapons, aerospace and the like.
Background
At present, the plug and the socket of the existing single-core circular optical fiber connector generally adopt common threaded connection or bayonet connection, do not have a quick plugging function, and the optical fiber plug is easy to have the condition of butt joint dislocation in the butt joint process with the socket, so that the transmission of optical signals is influenced. Meanwhile, the existing optical fiber contact element generally adopts a clamping jaw fixing mode, the problems of high insertion loss and return loss of optical signals are solved during butt joint, the service life of a product is short, the optical fiber plug of the plug is generally not detachable, subsequent product maintenance is inconvenient, and the production cost is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a single core fiber connector plug, this fiber connector plug can reduce optical signal's insertion loss and return loss, finally realizes the complete transmission of signal, and the optic fibre contact can be dismantled and possess quick plug function, compromises factors such as outward appearance, weight, cost of maintenance to ensure its process rationality, reduced product cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a single-core optical fiber connector plug comprises a plug shell assembly, a hole front insulator, a metal sleeve, a ceramic sleeve, a sealing ring, a hole front gasket, a hole rear insulator, a large spring A, a hole rear gasket, a clamp spring A and a phi 2.5 optical fiber contact pin A;
the front insulator and the rear insulator are fixed inside the plug shell assembly through clamp springs A, a phi 2.5 optical fiber contact pin A is axially arranged in the front insulator and the rear insulator, a metal sleeve and a ceramic sleeve are sequentially arranged between the inner periphery of the front end of the front insulator and the outer periphery of the phi 2.5 optical fiber contact pin A, a hole front gasket is arranged inside the tail end of the front insulator, a hole rear gasket is arranged inside the rear insulator, a large spring A is arranged between the hole front gasket and the hole rear gasket and sleeved on the outer periphery of the phi 2.5 optical fiber contact pin A to limit the phi 2.5 optical fiber contact pin A, a sealing ring is further arranged on a butt joint face in butt joint with a socket inside the plug shell assembly, and the sealing ring is sleeved on the outer periphery of the front insulator.
Furthermore, the plug shell assembly comprises a plug shell and a connecting nut, the connecting nut is mounted on the periphery of the plug shell, a plurality of accommodating grooves are formed in the front end of the plug shell along the circumferential direction, steel balls are mounted in each accommodating groove, a through hole is formed in the plug shell, balls are arranged in the through hole, strip-shaped grooves for placing arc-shaped elastic gaskets are formed in the peripheral surface of the plug shell along the axial direction of the through hole to the two sides, and the arc-shaped elastic gaskets are arranged in the strip-shaped grooves and located between the plug shell and limiting grooves of the connecting nut;
the plug is characterized in that the plug shell is further provided with a mounting groove, a locking elastic sheet is mounted in the mounting groove, and a first locking groove and a second locking groove which are matched with the locking elastic sheet are formed in the inner periphery of the connecting nut.
Further, the insulator includes first cylinder body before the hole, is equipped with first circular hole and notch cuttype hole from the front end in proper order to the rear end along the axial in first cylinder body is internal, and is equipped with 1 first rectangle constant head tank and 4 first arc positioning keys along the circumferencial direction on the periphery of first cylinder body.
Further, the insulator is the cavity cylinder behind the hole, is equipped with first annular boss at the terminal interior week of cavity cylinder, and is equipped with the rectangle opening that the symmetry set up in first annular boss inboard, and is equipped with the rectangle recess that 2 symmetries set up on the preceding terminal surface of first annular boss, and 2 rectangle recesses are the vertical angle with the rectangle opening respectively, and are equipped with 1 second rectangle constant head tank and 4 second arc positioning keys along the circumferencial direction in the periphery of cavity cylinder.
Further, the phi 2.5 optical fiber contact pin A comprises a phi 2.5 standard ferrule, a small spring, a front shell, a rear shell and a crimping sleeve; the periphery of the phi 2.5 standard insertion core is sleeved with a small spring, the front shell and the rear shell are connected through threads, the tail end of the front shell is provided with a closing structure, the phi 2.5 standard insertion core and the small spring are axially and limitedly fixed inside the rear shell, the periphery of the tail end of the rear shell is provided with a crimping sleeve, and the periphery of the rear shell is provided with a first rectangular positioning key protruding outwards.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a single core fiber optic plug phi 2.5 fiber insertion needle A's little spring design has structurally not only guaranteed contact length, is guaranteeing moreover when butt joint length, has realized fiber insertion needle's dismantlement function. The large spring A can freely stretch out and draw back in the insulator, rapid taking and sending of the contact piece are guaranteed through stretching of the large spring A, insertion loss and return loss of optical signals are reduced, and complete transmission of the signals is finally achieved. Meanwhile, the insulator adopts a multi-key-groove design, the coaxiality of products is better improved, the design of the plug shell assembly is more unique, five different convex keys are designed, the butt joint and the misplugging of the products are prevented, a metal sleeve is additionally arranged outside the ceramic sleeve, the ceramic sleeve is better ensured not to be broken, and the guide butt joint effect is achieved. Therefore, on the basis of meeting the performance requirements, the product realizes the transmission of optical signals, gives consideration to factors such as appearance, weight, maintenance cost and the like, ensures the process reasonability and reduces the product cost.
Drawings
Fig. 1 is a schematic structural diagram of the plug of the present invention;
fig. 2 is a schematic view of the external structure of the plug of the present invention;
FIG. 3 is a right side view of FIG. 2;
FIG. 4 is a schematic view of the external structure of the plug housing;
FIG. 5 is a schematic view of the coupling nut;
FIG. 6 is a right side view of FIG. 5;
fig. 7 is a schematic view of the structure of the pre-hole insulator of the plug of the present invention;
fig. 8 is a schematic view of the structure of the rear hole insulator of the plug or the rear pin insulator of the socket of the present invention;
FIG. 9 is a right side view of FIG. 8;
FIG. 10 is a left side view of FIG. 8;
FIG. 11 is a schematic view of the structure of either a Φ 2.5 fiber stub A or a Φ 2.5 fiber stub B;
FIG. 12 is a schematic view of the half-section of FIG. 11;
FIG. 13 is a schematic structural diagram of a Φ 2.5 standard ferrule;
fig. 14 is a schematic view of a plug structure interfacing with the plug of the present invention;
FIG. 15 is a right side view of FIG. 14;
fig. 16 is a schematic structural view of the plug and the socket of the present invention after being butted;
in the figure: 1-a plug housing assembly; 1-1-a plug housing; 1-1-1-holding tank; 1-1-2-steel ball; 1-1-3-via; 1-1-4-strip-shaped grooves; 1-1-5-mounting groove; 1-1-6-locking spring plate; 1-2-connecting nuts; 1-2-1-a limiting groove; 1-2-2-first locking groove; 1-2-3-a second locking groove;
2-a pre-hole insulator; 2-1-a first cylindrical body; 2-1-1-a first circular inner bore; 2-1-2-first step type inner hole; 2-1-3-a first rectangular positioning slot; 2-1-4-a first arc positioning key;
3-a metal sleeve; 3-1-a hollow cylindrical sleeve body; 3-2-closing up the torus; 3-3-a second annular boss;
4-a ceramic bushing; 5-sealing ring;
6-hole front gasket; 6-1-a hollow cylindrical body; 6-2-first torus;
7-hole rear insulator; 8-big spring A; 9-hole rear gasket; 10-clamp spring A; 11-phi 2.5 optical fiber pin A; 12-an arc-shaped elastic gasket; 13-a ball bearing;
14-a socket housing; 14-1-cambered surface groove; 14-2- "concave" character type positioning key; 14-3-rectangular alignment key a; 14-4-arc alignment key a;
15-needle front insulator; 15-1-a second cylindrical body; 15-2-first stepped bore; 15-3-a third rectangular positioning slot; 15-4-a third arc alignment key;
16-needle front gasket; 17-big spring B; 18-needle back pad; 19-needle rear insulator; 20-clamp spring B; a 21-phi 2.5 optical fiber pin B; 22-square disc washer;
23-a first annular boss; 23-1-rectangular opening; 23-2-rectangular grooves; 23-3-a second rectangular positioning slot; 23-4-a second arced alignment key;
24-phi 2.5 standard ferrule; 24-1-phi 2.5 ceramic ferrule; 24-2-metal holder; 24-2-1-second stepped inner bore; 24-2-2-boss structure; 25-small spring;
26-a front housing; 26-1-a first hollow cylindrical body; 26-1-1-internal threads; 26-2-circular ring-shaped closing-up structure;
27-a rear housing; 27-1-a second hollow cylindrical body; 27-1-1-external threads; 27-1-2-a first rectangular alignment key; 27-1-3-stepped inner holes; 27-1-4-annular groove; 28-crimp sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, a single-core optical fiber connector plug comprises a plug housing assembly 1, a hole front insulator 2, a metal sleeve 3, a ceramic sleeve 4, a sealing ring 5, a hole front gasket 6, a hole rear insulator 7, a large spring A8, a hole rear gasket 9, a clamp spring A10 and a phi 2.5 optical fiber pin A11;
the hole front insulator 2 and the hole rear insulator 7 are fixed inside the plug shell assembly 1 through clamp springs A10, a phi 2.5 optical fiber contact pin A11 is axially arranged inside the hole front insulator 2 and the hole rear insulator 7, a metal sleeve 3 and a ceramic sleeve 4 are sequentially arranged between the inner periphery of the front end of the hole front insulator 2 and the outer periphery of a phi 2.5 optical fiber contact pin A11, a hole front gasket 6 is arranged inside the tail end of the hole front insulator 2, a hole rear gasket 9 is arranged inside the hole rear insulator 7, a large spring A8 is arranged between the hole front gasket 6 and the hole rear gasket 9, the large spring A8 is sleeved on the outer periphery of the phi 2.5 optical fiber contact pin A11 to limit the phi 2.5 optical fiber contact pin A11, a seal ring 5 is further arranged on a butt joint surface of the plug shell assembly 1 and in butt joint with a socket, and the seal ring 355 is sleeved on the outer periphery;
referring to fig. 1 and 16, the plug housing assembly 1 includes a plug housing 1-1 and a connection nut 1-2, the connection nut 1-2 is installed on the periphery of the plug housing 1-1, a plurality of receiving grooves 1-1-1 are formed in the front end of the plug housing 1-1 along the circumferential direction, a steel ball 1-1-2 is installed in each receiving groove 1-1-1, a through hole 1-1-3 is formed in the plug housing 1-1, a ball 13 is disposed in the through hole 1-1-3, a strip-shaped groove 1-1-4 for placing an arc-shaped elastic gasket 12 is formed in the periphery of the plug housing 1-1 along the axial direction of the through hole 1-1-3, the arc-shaped elastic gasket 12 is disposed in the strip-shaped groove 1-1-4 and is located in the limiting groove 1-1 of the plug housing 1-1 and the connection nut 1-2 2-1.
Referring to fig. 4-6, the plug housing 1-1 is further provided with a mounting groove 1-1-5, a locking elastic sheet 1-1-6 is mounted in the mounting groove 1-1-5, a first locking groove 1-2-2 and a second locking groove 1-2-3 for matching with the locking elastic sheet 1-1-6 are formed in the inner circumference of the connecting nut 1-2, when the plug is not butted, the locking elastic sheet 1-1-6 is placed in the first locking groove 1-2-2, and when the plug and the socket are in place, the connecting nut 1-2 is rotated to drive the locking elastic sheet 1-1-6 to move and fall into the second locking groove 1-2-3, so that the axial locking of the plug housing 1-1 and the socket is realized.
Referring to fig. 7, the pre-hole insulator 2 includes a first cylindrical body 2-1, a first circular inner hole 2-1-1 and a first stepped inner hole 2-1-2 are sequentially axially provided in the first cylindrical body 2-1 from a front end to a rear end, and 1 first rectangular positioning groove 2-1-3 and 4 first arc-shaped positioning keys 2-1-4 are provided on an outer circumference of the first cylindrical body 2-1 in a circumferential direction.
The metal sleeve 3 comprises a hollow cylindrical sleeve body 3-1, the front end of the hollow cylindrical sleeve body 3-1 is provided with a ring body closing-in 3-2 extending towards the inner periphery, the tail end of the hollow cylindrical sleeve body is provided with a second annular boss 3-3 extending towards the outer periphery, and the hollow cylindrical sleeve body 3-1 is axially arranged in the first circular inner hole 2-1-1;
the hole front gasket 6 comprises a hollow cylinder body 6-1, the front end of the hollow cylinder body 6-1 extends inwards along the circumference to form a first annular body 6-2, the peripheral surface of the hollow cylinder body 6-1 is in a stepped shape matched with the first stepped inner hole 2-1-2, and the hollow cylinder body 6-1 is axially arranged in the first stepped inner hole 2-1-2 of the hole front insulator 2 and is fixed through the matching of a stepped surface;
the second annular boss 3-3 of the metal sleeve 3 is arranged between the front end face of the first stepped inner hole 2-1-2 of the hole front insulator 2 and the front end face of the first annular body 6-2 of the hole front gasket 6.
The ceramic bushing 4 is of a hollow cylindrical structure. The ceramic sleeve 4 is axially arranged in the metal sleeve 3, and two ends of the ceramic sleeve 4 are respectively abutted between the inner side of the ring body closing-in 3-2 and the first ring body 6-2 of the hole front gasket 6 for fixation.
The metal sleeve 3 is additionally arranged on the ceramic sleeve 4, so that the ceramic sleeve 4 can be better prevented from being broken, the front end of the ceramic sleeve 4 is provided with a ring body closing-in 3-2, and a guiding butt joint effect is realized on a phi 2.5 optical fiber contact pin B21 when the plug is in butt joint with the socket.
Referring to fig. 8-10, the insulator 7 is a hollow cylinder, a first annular boss 23 is disposed on the inner periphery of the end of the hollow cylinder, rectangular openings 23-1 are symmetrically disposed on the inner side of the first annular boss 23, 2 rectangular grooves 23-2 are symmetrically disposed on the front end surface of the first annular boss 23, the 2 rectangular grooves 23-2 are perpendicular to the rectangular openings 23-1, and 1 second rectangular positioning groove 23-3 and 4 second arc-shaped positioning keys 23-4 are disposed on the outer periphery of the hollow cylinder along the circumferential direction.
Referring to fig. 11-13, the Φ 2.5 fiber stub a11 includes a Φ 2.5 standard ferrule 24, a small spring 25, a front housing 26, a rear housing 27, and a crimp sleeve 28; the periphery of the phi 2.5 standard ferrule 24 is sleeved with a small spring 25, the front shell 26 and the rear shell 27 are connected through threads, the tail end of the front shell 26 is provided with a closing structure, the phi 2.5 standard ferrule 24 and the small spring 25 are axially limited and fixed in the rear shell 27, the periphery of the tail end of the rear shell 27 is provided with a crimping sleeve 28, the periphery of the rear shell 27 is provided with a first rectangular positioning key 27-1-2 protruding outwards, the first rectangular positioning key 27-1-2 is matched with the rectangular opening 23-1 and can be inserted into the rectangular opening 23-1, the periphery of the tail end of the rear shell 27 is provided with a plurality of annular grooves 27-1-4, and when a wire is crimped between the rear shell 27 and the crimping sleeve 28, the wire can be fixed in an enhanced.
The phi 2.5 standard ferrule 24 comprises a phi 2.5 ceramic ferrule 24-1 and a metal support 24-2 which are integrally formed through a die, the metal support 24-2 comprises a metal support body, the inner periphery of the metal support body is provided with a second step-shaped inner hole 24-2-1, the front end of the outer periphery is provided with a boss structure 24-2-2, the tail end of the phi 2.5 ceramic ferrule 24-1 is arranged in a hole with a larger diameter of the second step-shaped inner hole 24-2-1, and a small spring 25 is sleeved on the outer periphery of the metal support body and one end of the small spring abuts against the flat end face of the boss structure 24-2-2. In the butt joint process of the phi 2.5 optical fiber inserting needle A11 and the phi 2.5 optical fiber inserting needle B21, the phi 2.5 ceramic inserting core 24-1 is stressed, the boss structure 24-2-2 of the metal support 24-2 presses the reducing spring 25 backwards, the phi 2.5 ceramic inserting core 24-1 is driven to retreat by the elastic force, and a certain contact pressure is ensured.
The front housing 26 includes a first hollow cylinder 26-1, a terminal of the first hollow cylinder 26-1 extends inward along a circumference to form a circular ring-shaped closing-in structure 26-2, and an inner circumference of the first hollow cylinder 26-1 is provided with an inner thread 26-1-1.
The rear shell 27 comprises a second hollow cylinder body 27-1, an external thread 27-1-1 is arranged on the periphery of the tail end of the second hollow cylinder body 27-1, the first rectangular positioning key 27-1-2 is located at the front end of the external thread 27-1-1, a stepped inner hole 27-1-3 is formed in the second hollow cylinder body 27-1, and the stepped surface of the stepped inner hole 27-1-3 is used for limiting when the small spring 25 stretches.
The cross section of the large spring A8 is circular.
During assembly, firstly installing a phi 2.5 standard ferrule 24, specifically, integrally molding and fixing a phi 2.5 ceramic ferrule 24-1 and a metal support 24-2 through a mold, then sleeving a small spring 11-2 on the periphery of the metal support 24-2, and abutting one end of the small spring against the flat end face of the boss structure 24-2-2; then the tail end of the phi 2.5 ceramic ferrule 24-1 penetrates out of the annular closing-in structure 26-2 of the front shell 26, the tail end face of the boss structure of the metal support 24-2 abuts against the inner end face of the annular closing-in structure 26-2, and the front shell 26 and the rear shell 27 are fixed through matching connection of the internal thread 26-1-1 and the external thread 27-1-1, so that the front end of the phi 2.5 standard ferrule 24 and the small spring 11-2 are placed in an inner hole with a larger diameter in the stepped inner hole 11-4-1-5 of the rear shell 27. The crimping sleeve 28 is used for placing the wire sheath of the wire between the outer periphery of the front end of the rear shell 27 and the inner periphery of the crimping sleeve 28 when the optical fiber contact body is connected with the wire, and then the rear shell 27, the wire sheath and the crimping sleeve 11-5 are fixed in an interference crimping mode through crimping pliers.
Assembling the plug: firstly, a first rectangular positioning key 27-1-2 of a phi 2.5 optical fiber inserting needle A11 corresponds to a rectangular opening 23-1 of a hole rear insulator 7, a front shell of the phi 2.5 optical fiber inserting needle A11 and the first rectangular positioning key 27-1-2 penetrate through the first annular boss 23 of the hole rear insulator 7, then the phi 2.5 optical fiber inserting needle A1190 degree is rotated to enable the first rectangular positioning key 27-1-2 to fall into a rectangular groove 23-2 on the front end face of the first annular boss 23 for fixation, then a hole rear gasket 9, a large spring A8, a hole front gasket 6, a ceramic sleeve 4, a metal sleeve 3 and a hole front insulator 2 are sequentially arranged to realize the fixation of the phi 2.5 optical fiber inserting needle A11, then the hole rear insulator 7 and the hole front insulator 2 are fixed in a plug shell 1-1 through a clamp spring A10, and CGSZ33-A1 sealing glue is adopted near a clamp spring A10 for encapsulation treatment, the airtightness of the connector itself is ensured and then a coupling nut 1-2 is mounted on the outside of the plug housing 1-1.
Referring to fig. 14-15, the socket structure for mating with the plug of the present invention is as follows: the socket comprises a socket shell 14, a front needle insulator 15, a front needle gasket 16, a large spring B17, a rear needle gasket 18, a rear needle insulator 19, a snap spring B20 and a phi 2.5 optical fiber pin B21, wherein the front needle insulator 15 and the rear needle insulator 19 are fixed in an inner cavity of the socket shell 14 through the snap spring B20, the front needle gasket 16 is arranged in the front needle insulator 15, the rear needle gasket 18 is arranged in the rear needle insulator 19, the phi 2.5 optical fiber pin B21 is axially arranged in the front needle insulator 15 and the rear needle insulator 19 (the structure of the rear needle insulator 19 is the same as that of the hole insulator 7, refer to fig. 5), the front needle gasket 16 and the rear needle gasket 18 are sleeved on the periphery of the phi 2.5 optical fiber pin B21, the large spring B17 is sleeved on the periphery of the phi 2.5 optical fiber pin B21, the large spring B17 is arranged between the front needle gasket 16 and the rear needle gasket 18, and the phi 2.5 optical fiber pin B21; the outer peripheral surface of the socket shell 14 is provided with an arc surface groove 14-1 used for being matched with the steel ball 1-1-2;
the plug comprises a plug shell 1, a socket shell 14 and a plug shell, wherein a square disc gasket 22 is installed on the tail end face of a square disc body of the socket shell 14, 5 positioning keys are arranged on the peripheral face of the socket shell along the circumference and comprise 1 concave positioning key 14-2, 2 rectangular positioning keys A14-3 positioned on two sides of the concave positioning key 14-2 and 2 arc positioning keys A14-4 positioned below the rectangular positioning keys A14-3, and positioning groove structures respectively matched with the concave positioning keys 14-2, the 2 rectangular positioning keys A14-3 and the 2 arc positioning keys A14-4 are arranged on the plug shell 1.
The pre-needle insulator 15 comprises a second cylinder body 15-1, a first stepped inner hole 15-2 is formed in the second cylinder body 15-1, and 1 third rectangular positioning groove 15-3 and 4 third arc-shaped positioning keys 15-4 are formed in the periphery of the second cylinder body 15-1 along the circumferential direction;
the needle front gasket 16 is in the shape of a hollow cylinder with a step surface at the periphery, the needle front gasket 16 is arranged in the first step-shaped inner hole 15-2, and the step surface is matched with the first step-shaped inner hole 15-2 to axially limit the needle front gasket 16 and the needle front insulator 15.
The phi 2.5 optical fiber pin B21 and the phi 2.5 optical fiber pin A11 are identical in structure.
The cross section of the large spring B20 is square.
Referring to fig. 16, when the plug is butted with the socket, the butting end of the socket housing 14 is axially inserted into the plug housing 1-1 and is slidably approached by the ball 13, when the butting is in place, the ball 1-1-2 falls into the arc groove 14-1, the ball 13 upwards jacks the arc elastic gasket 12, the arc elastic gasket 12 is separated from the limit of the strip groove 1-1-4 of the plug housing 1, the connecting nut 1-2 can circumferentially rotate relative to the plug housing 1, meanwhile, the front end of the Φ 2.5 optical fiber pin B21 is inserted into the metal sleeve 3 and the ceramic sleeve 4 and is in surface-to-surface contact with the Φ 2.5 optical fiber pin a11 to realize signal transmission, the ceramic sleeve 4 ensures the accurate butting of the Φ 2.5 optical fiber pin a11 and the Φ 2.5 optical fiber pin B21, and fixes the butting state, and the sealing ring 5 ensures the airtightness after the butting.
When the plug and the socket are not butted, the locking elastic sheet 1-1-6 is arranged in the first locking groove 1-2-2, and when the plug and the socket are in place, the connecting screw cap 1-2 is rotated to drive the locking elastic sheet 1-1-6 to move and fall into the second locking groove 1-2-3, so that the axial locking of the plug shell 1-1 and the socket shell 1 is realized.
The butt joint process of the plug and the socket comprises the following steps: the butt joint end of the socket shell 14 is axially inserted into the plug shell 1-1 and slides to approach through the ball 13, meanwhile, the front end of the phi 2.5 optical fiber pin B21 is inserted into the metal sleeve 3 and the ceramic sleeve 4 and contacts with the phi 2.5 optical fiber pin A11 in a surface-to-surface mode to realize signal transmission, when the butt joint is in place, the arc-shaped elastic gasket 12 pops out for limiting, and the ceramic sleeve 4 ensures the accurate butt joint of the phi 2.5 optical fiber pin A11 and the phi 2.5 optical fiber pin B21 and fixes the butt joint state. The plug and the socket contact are designed by adopting the same special structure, so that elastic butt joint can be realized, and the product can be detached when being used in a connector, thereby facilitating the subsequent maintenance of the product. When in butt joint, the small springs 25 in the phi 2.5 optical fiber pin A11 and the phi 2.5 optical fiber pin B21 are compressed at the same time, the generated elastic force drives the phi 2.5 ceramic ferrule 24-1 to retreat, and certain contact pressure is ensured until the connector socket and the plug are in butt joint in place.
The Φ 2.5 fiber stub a11 is the same as Φ 2.5 fiber stub B21, and the procedure for retrieving Φ 2.5 fiber stub a11 is described as follows: the phi 2.5 optical fiber pin A11 is limited in the plug housing 1-1 by the hole rear insulation 7, the big spring A8, the hole rear gasket 9 and the hole front gasket 6, the assembled state is that the big spring A8 is in a compressed state, when the contact body is to be taken out, a tool is used for applying pressure inwards at the crimping sleeve 28 at the tail end of the phi 2.5 optical fiber pin A11 and rotating 90 degrees, so that the two first rectangular positioning keys 27-1-2 on the rear housing 27 of the phi 2.5 optical fiber pin A11 fall into the two rectangular openings 23-1 of the hole rear insulation body 7, and further applying pulling force outwards to take out the phi 2.5 optical fiber pin A11.
The utility model discloses a single core fiber plug's design has structurally not only guaranteed contact length, is guaranteeing moreover when butt joint length, has realized fiber insertion pin's dismantlement function. The loss of like product among the prior art is about 2dB, the utility model discloses the product can reduce the loss to 0.3dB after the institutional advancement. The insulator adopts the design of many keyway, the better axiality of having improved the product, and the design of plug housing subassembly is more unique, has designed five kinds of protruding strong, prevents that the product from butt joint misplugging, adds the metal sleeve at ceramic sleeve, and better assurance ceramic sleeve is not cracked to play the guide butt joint effect. Therefore, on the basis of meeting the performance requirements, the product realizes the transmission of optical signals, gives consideration to factors such as appearance, weight, maintenance cost and the like, ensures the process reasonability and reduces the product cost.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (5)
1. A single-core optical fiber connector plug is characterized by comprising a plug shell component, a hole front insulator, a metal sleeve, a ceramic sleeve, a sealing ring, a hole front gasket, a hole rear insulator, a large spring A, a hole rear gasket, a clamp spring A and a phi 2.5 optical fiber contact pin A;
the front insulator and the rear insulator are fixed inside the plug shell assembly through clamp springs A, a phi 2.5 optical fiber contact pin A is axially arranged in the front insulator and the rear insulator, a metal sleeve and a ceramic sleeve are sequentially arranged between the inner periphery of the front end of the front insulator and the outer periphery of the phi 2.5 optical fiber contact pin A, a hole front gasket is arranged inside the tail end of the front insulator, a hole rear gasket is arranged inside the rear insulator, a large spring A is arranged between the hole front gasket and the hole rear gasket and sleeved on the outer periphery of the phi 2.5 optical fiber contact pin A to limit the phi 2.5 optical fiber contact pin A, a sealing ring is further arranged on a butt joint face in butt joint with a socket inside the plug shell assembly, and the sealing ring is sleeved on the outer periphery of the front insulator.
2. The single-core optical fiber connector plug according to claim 1, wherein the plug housing assembly comprises a plug housing and a coupling nut, the coupling nut is mounted on the outer periphery of the plug housing, a plurality of receiving grooves are formed in the front end of the plug housing in the circumferential direction, a steel ball is mounted in each receiving groove, a through hole is formed in the plug housing, a ball is disposed in the through hole, a strip-shaped groove for receiving the arc-shaped elastic gasket is formed in the outer periphery of the plug housing in the axial direction of the through hole toward both sides, and the arc-shaped elastic gasket is disposed in the strip-shaped groove and located between the limiting grooves of the plug housing and the coupling nut;
the plug is characterized in that the plug shell is further provided with a mounting groove, a locking elastic sheet is mounted in the mounting groove, and a first locking groove and a second locking groove which are matched with the locking elastic sheet are formed in the inner periphery of the connecting nut.
3. The single core fiber optic connector plug of claim 1, wherein the pre-hole insulator comprises a first cylindrical body having a first circular bore and a stepped bore axially disposed therein in sequence from a front end to a rear end, and wherein the first cylindrical body has 1 first rectangular detent and 4 first arcuate detents circumferentially disposed on an outer circumference thereof.
4. The plug of a single-core optical fiber connector according to claim 1, wherein the post-hole insulator is a hollow cylindrical body, a first annular boss is provided at an inner periphery of a distal end of the hollow cylindrical body, and symmetrically provided rectangular openings are provided at an inner side of the first annular boss, and 2 symmetrically provided rectangular recesses are provided at a front end surface of the first annular boss, the 2 rectangular recesses are respectively at a perpendicular angle to the rectangular openings, and 1 second rectangular positioning groove and 4 second arc-shaped positioning keys are provided at an outer periphery of the hollow cylindrical body in a circumferential direction.
5. The single-core fiber optic connector plug of claim 1, wherein the Φ 2.5 fiber stub a comprises a Φ 2.5 standard ferrule, a small spring, a front housing, a rear housing, and a crimp sleeve; the periphery of the phi 2.5 standard insertion core is sleeved with a small spring, the front shell and the rear shell are connected through threads, the tail end of the front shell is provided with a closing structure, the phi 2.5 standard insertion core and the small spring are axially and limitedly fixed inside the rear shell, the periphery of the tail end of the rear shell is provided with a crimping sleeve, and the periphery of the rear shell is provided with a first rectangular positioning key protruding outwards.
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| CN202021132489.5U CN212391637U (en) | 2020-06-18 | 2020-06-18 | Single-core optical fiber connector plug |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021132489.5U CN212391637U (en) | 2020-06-18 | 2020-06-18 | Single-core optical fiber connector plug |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019612A (en) * | 2021-11-23 | 2022-02-08 | 贵州电网有限责任公司 | Transformer substation's secondary equipment optical fiber link physics safety measure appurtenance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019612A (en) * | 2021-11-23 | 2022-02-08 | 贵州电网有限责任公司 | Transformer substation's secondary equipment optical fiber link physics safety measure appurtenance |
| CN114019612B (en) * | 2021-11-23 | 2022-12-23 | 贵州电网有限责任公司 | Substation secondary equipment optical fiber link physical safety measure auxiliary tool |
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