CN106711624B - Improved 2M connector and manufacturing method thereof - Google Patents
Improved 2M connector and manufacturing method thereof Download PDFInfo
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- CN106711624B CN106711624B CN201710134475.3A CN201710134475A CN106711624B CN 106711624 B CN106711624 B CN 106711624B CN 201710134475 A CN201710134475 A CN 201710134475A CN 106711624 B CN106711624 B CN 106711624B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/04—Pins or blades for co-operation with sockets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/02—Soldered or welded connections
- H01R4/023—Soldered or welded connections between cables or wires and terminals
- H01R4/024—Soldered or welded connections between cables or wires and terminals comprising preapplied solder
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/187—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping combined with soldering or welding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/20—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
- H01R43/048—Crimping apparatus or processes
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention provides an improved 2M connector and a using method thereof, and belongs to the technical field of communication. An improved 2M connector comprises a signal pin, a signal pin plug, an insulator, a connecting piece, an elastic pad, a fixing nut, a fixing pipe, a movable connecting body and an end cap, wherein one end of the signal pin is of a hollow structure; one end of the signal pin plug is of a hollow structure; the insulator is sleeved outside the signal pin; the connecting piece comprises a first connecting piece and a second connecting piece, the first connecting piece is sleeved outside the insulator, the front end of the second connecting piece is fixed with the tail end of the first connecting piece, and an elastic pad is arranged inside the tail end of the second connecting piece; the elastic cushion is of a hollow structure; the fixed nut is sleeved outside the tail end of the second connecting piece; the fixed pipe is sleeved outside the fixed nut; the movable connecting body is sleeved outside the first connecting piece; the end cap is sleeved outside the second connecting piece. The invention adopts compression joint for fixation, has good conductivity, high compression joint speed and high working efficiency, and can be repeatedly used.
Description
Technical Field
The invention belongs to the technical field of communication equipment, and particularly relates to an improved 2M connector and a manufacturing method thereof.
Background
With the development of power communication, communication equipment of a transformer substation is improved day by day, and in the communication equipment, a distribution cabinet plays a crucial role, and only by the communication equipment, outward transfer of services can be realized.
In the data distribution, the quality of the 2M connector is related to whether each service can be normally transmitted, the existing 2M connector is welded, however, the welding space provided by the 2M connector is narrow, the 2M connector is small, the welding space provided by the 2M connector is not much larger than that of an electric soldering iron, soldering tin is not easy to place, the soldering tin is shortened and placed to be easy to leak, and short circuit can occur after the soldering tin is lengthened. A second person is necessary to assist in the welding process, and one person cannot complete the task at all. During welding, a power supply needs to be found on site, an electric soldering iron is inserted for preheating, after preheating is finished, one person holds one end of the 2M connector with one hand and holds the electric soldering iron with the other hand, a second person holds the stable data wire with one hand and cooperates with the data wire with the other hand by holding soldering tin, and the hand of the second person is extremely easy to be burnt carelessly due to small space, so that certain danger is caused; in addition, the soldering tin is easy to melt metal, and can emit unpleasant gas during welding, and the gas is inhaled into the lung by a human body and can cause potential harm to the human body. And because 2M connects the space little, weld the copper core of data line and the joint shell of 2M data line together easily when the welding, cause the short circuit, welding quality problems such as false solder can also take place, and difficult discovery.
After the 2M connectors are welded, the connectors are inserted into a numerical distribution, screws are screwed, and business circulation is achieved, but after the connector is operated for a period of time, a few 2M connectors are loosened and fall off due to infirm welding, so that business is obstructed, and an optical transceiver gives an alarm. The 2M services comprise services such as administrative telephone, dispatching automation, protection and safety control and the like, if the 2M line is the administrative telephone service, the problem is not very great, if the 2M line is the relay protection service, the service is 220kV line differential protection, the line has a fault and needs to be tripped, and because the 2M channel is not communicated, the line cannot be tripped, and then serious grid accidents such as line burning, transformer damage and the like can occur. In addition, the existing 2M joint usually adopts iron alloy, the toughness is small, the iron alloy is easy to crush during compression joint, and the joint which is just welded needs to be cut short again and then manufactured.
The patent of application number 201520662321.8 discloses a 2M cable head, the cable head is from interior to outer conducting layer, internal insulation layer, shielding layer, outer jacket, crimping layer of being in proper order, the internal conduction layer is formed by the contact pin welding of cable end inner conductor and 2M connector, be the roller flower cylinder of 2M connector between internal insulation layer and the shielding layer, the even roller flower cylinder of parcel of shielding layer, be connected for the crimping between crimping layer cover shielding layer and crimping layer tip and the shielding layer, thermal shrinkage layer cup joints in the 2M cable head outside. The manufacturing method comprises the following steps: now, the crimping layer 5 and the thermal shrinkage layer 6 are sleeved at one end of the cable, then the inner conductor 1 at the end part of the cable is peeled off, the peeled inner conductor 1 is inserted into a contact pin 7 of the 2M connector, a roller flower cylinder 8 of the 2M connector is inserted between an inner insulating layer 2 and a shielding layer 3 of the cable, the shielding layer 3 is uniformly attached to the roller flower cylinder 8 of the connector, the crimping layer 5 covers the shielding layer 3, then wire pressing pliers are used for tightly pressing two ends of the crimping layer 5, then the contact pins 7 of the inner conductor 1 and the 2M connector are welded, then the thermal shrinkage layer 6 is sleeved at the outer side of a cable head, and the thermal shrinkage layer 6 is in close contact with the cable head by using a hot air gun. The utility model discloses a cable head conduction performance good, life can reach more than ten years. However, the 2M cable head also has the following problems, one of which is that the 2M connector used in the 2M cable head is the conventional 2M head, the structure of the 2M cable head is not significantly improved, and the size of the pin space of the 2M connector determines the size of the soldering space, so that in order to ensure that the inner conductor at the end of the cable is well contacted with the pin, the pin space is still narrow (fig. 1), which is not favorable for operation and observation, and the problems of insufficient solder, desoldering and the like still occur, and are not easy to be found by an operator, so that the phenomena of insufficient solder, desoldering, wire breakage and the like of the core wire of the cable head, which are often caused in operation and are proposed by the background technology [0002], are not substantially solved. Secondly, it can be confirmed by combining with figure 1 that the heat-shrinkable layer is sleeved outside the crimping layer in the 2M cable head, and if the crimping layer is not firmly crimped in actual operation, the heat-shrinkable layer shrinks outside the crimping layer under the action of heat and does not play an effective role in fixing the 2M cable head. The patent with application number 201510540841.6 discloses a 2M cable head manufacturing process, which comprises the following steps: (1) sleeving a crimping sleeve and a heat-shrinkable sleeve at one end of the 2M cable in sequence; (2) stripping an inner conductor at the end part of the cable from the outer protective layer and the inner insulating layer of the cable to ensure that the end surfaces of the outer protective layer and the inner insulating layer of the cable are flush and smooth and do not damage the shielding layer and the inner conductor; (3) inserting the stripped inner conductor into a contact pin of the 2M connector to enable a step at the end part of the contact pin to be in contact with an inner insulating layer of the cable; (4) inserting a roller flower cylinder of the 2M connector between an inner insulating layer and a shielding layer of a cable, enabling the shielding layer to be uniformly attached to the roller flower cylinder of the connector, covering a crimping sleeve on the shielding layer, and then pressing two ends of the crimping sleeve tightly by using a crimping pliers; (5) separating the outer terminal of the 2M connector from the inner insulation of the 2M connector, keeping the step of the contact pin in contact with the inner insulation of the cable and the inner insulation of the 2M connector, and then welding the contact pin and the inner conductor of the cable by using welding tin; (6) after welding, inserting the outer terminal of the 2M connector and the inner insulation of the 2M connector together; and then sleeving the heat-shrinkable sleeve at the joint of the crimping sleeve and the cable, so that the heat-shrinkable sleeve is tightened at the joint. The 2M cable head manufacturing process has the following problems: firstly, the crimping sleeve is covered on the shielding layer and compressed tightly before the welding in the step (5), if a problem is found before the welding or in the welding process, the adjustment or the re-manufacture is needed, and the crimping sleeve is already crimped and fixed, so that the adjustment or the disassembly becomes troublesome, the crimping sleeve is wasted, and the manufacturing efficiency is reduced. Secondly, the contact pin and the cable inner conductor are welded by soldering tin, and due to structural limitation of the contact pin, the problems of easy cold joint, disconnection and the like still exist in soldering tin welding, and the soldering tin welding is not easy to be found by an operator.
In view of the above problems, it is desirable to develop a stable and reliable 2M joint to solve the above disadvantages of the existing 2M joint.
Disclosure of Invention
The invention aims to solve the technical problem of providing a safe, reliable and reusable 2M connector aiming at the defects of the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an improved 2M connector comprises a signal pin, a signal pin plug, an insulator, a connecting piece, an elastic pad, a fixing nut, a fixing pipe, a movable connecting body and an end cap, wherein one end of the signal pin is of a hollow structure and is used for the signal pin plug to insert; one end of the signal pin plug is of a hollow structure for the wire core of the 2M data wire to be inserted; the insulator is sleeved outside the signal pin; the connecting piece comprises a first connecting piece and a second connecting piece, the first connecting piece is sleeved outside the insulator, and the front end of the second connecting piece is fixed with the tail end of the first connecting piece; the elastic pad is arranged in the tail end of the second connecting piece; the elastic pad is of a hollow structure and is used for the 2M data line to pass through; the fixing nut is sleeved outside the tail end of the second connecting piece; the fixed pipe is sleeved outside the fixed nut; the movable connecting body is sleeved outside the first connecting piece; the end cap is sleeved outside the second connecting piece.
Preferably, the signal pin is provided with a first step part formed by protruding the outer surface of the signal pin; the insulator comprises a first insulator and a second insulator, wherein a first hole for the signal pin to pass through is formed in the first insulator, a second step part is formed on the outer part of the first insulator, and a second hole for the tail end of the signal pin to pass through is formed in the second insulator; the first connecting piece is internally provided with a third step part matched with the second step part, the first connecting piece is externally provided with a fourth step part, the tail end of the first connecting piece is in threaded connection with the front end of the second connecting piece, the second connecting piece is internally provided with a stop part, and the insulator is fixed through the third step part and the stop part; the end part of the movable connector is bent inwards and clamped on the fourth step part; the end cap is fixedly connected with the second connecting piece.
Preferably, the tail end of the signal pin plug is provided with a chamfer.
Preferably, the tail end of the signal pin plug is provided with a flaring section.
Preferably, the inner surface of the signal pin plug is provided with a solder paste layer.
Preferably, the longitudinal section of the tail end of the second connecting piece is in a symmetrical wedge shape, the longitudinal section of the side wall of the fixing nut is in a wedge shape which is matched with the external shape of the second connecting piece, and the wedge angle of the second connecting piece is smaller than that of the fixing nut.
Preferably, the tail end of the second connecting piece is provided with a plurality of splits along the axial direction.
The invention also provides a manufacturing method of the improved 2M joint, which comprises the following steps:
1) sequentially penetrating and fixing the signal pins in the second insulator and the first insulator;
2) the first insulator and the second insulator together with the signal pin penetrate into the first connecting piece, and a movable connecting body is sleeved on the outer portion of the first connecting piece;
3) fixing the elastic pad inside the tail end of the second connecting piece;
4) stripping an outer rubber layer of the 2M data line to be manufactured according to a certain length, separating the shielding layer from the insulating layer and exposing the wire core; sequentially enabling the 2M data line to be manufactured to pass through the end cap, the fixing pipe, the fixing nut and the second connecting piece;
5) inserting the wire core into the signal pin plug, and adopting matched crimping pliers to crimp;
6) inserting the signal pin plug into the hollow end of the signal pin and fixing;
7) fixing the second connecting piece with the first connecting piece, cutting a shielding layer of the 2M data line for a certain length and then uniformly covering the shielding layer outside the tail end of the second connecting piece,
8) screwing the fixing nut to fix the fixing nut with the second connecting piece, sleeving the fixing pipe, and pressing and fixing the fixing pipe by using a crimping clamp;
9) screwing the end cap tightly to enable the end cap to be fixed with the second connecting piece through threads, and finishing the manufacture of the 2M data line;
10) inserting the completed 2M data line into a corresponding 2M connector in the digital distribution cabinet according to the requirement of a mode list so as to ensure that the connection is reliable; and (3) making a channel in a network management, configuring data to open the channel, debugging on site, carrying out short circuit on the 2M of the digital distribution cabinet, checking whether a near-end loop is normal, then connecting service equipment after switching, checking whether an optical machine alarms, and if all the circuits are normal, indicating that the loop has no problem.
Preferably, the matched crimping pliers comprise a handle, a fixed shaft, a crimping die, a die fixing screw, a power assisting arm and a movable shaft, wherein the handle is connected with the power assisting arm, the crimping die is arranged on the power assisting arm through the die fixing screw, the crimping die is composed of half dies symmetrically arranged at the front ends of the two power assisting arms, the opening parts of the two half dies are opposite, and a closed space formed during pressing is matched with the tail end shape of the signal pin.
Preferably, the half mold comprises the opening portion, a fixing hole and a limiting step portion, the mold fixing screw penetrates through the fixing hole to fix the half mold on the force assisting arm, and the limiting step portion is arranged at the connecting position of the opening portion and the force assisting arm to enable the orientation of the opening portion to be fixed.
Compared with the prior art, the invention has the following beneficial effects:
1) the improved 2M connector can be firmly fixed only by using a matched crimping clamp for crimping without welding, the 2M connector can be ensured to be reliably connected by fixing layer by layer, and experiments show that when a 100N force is adopted to pull a data line, the 2M connector is not loosened, the loop inspection is normal, and the use requirement can be completely met; and the signal needle contacts well with the wire core of the 2M data line after compression joint, and the conductivity is good. Compared with the traditional welding and fixing method, the method has the advantages of higher crimping speed and higher working efficiency. In addition, the 2M joint after the connection can be completely disassembled, so that the repeated utilization is realized, and the utilization efficiency of each component of the 2M joint is improved.
2) The improved 2M connector is crimped by matching crimping pliers and is not limited by field conditions, and the existing 2M connector is welded and can be implemented only by a power supply on the field. The linear speed of 2M manufactured by adopting the improved 2M connector can be improved by more than 90 percent.
3) The solid end part of the signal pin is conical, so that the signal pin can be conveniently inserted into the digital wiring cabinet, and the other end of the signal pin is hollow so as to insert a signal pin plug; and the tail end of the signal pin plug is additionally provided with a flaring section, so that the insulating layer of the 2M wire can be inserted into a proper distance, such as: 1mm, the insulating layer of the 2M wire is pressed together during crimping, and the 2M wire manufactured in the way is more durable.
4) According to the invention, the tail end of the signal pin plug is hollow, and the soldering paste layer is arranged in the signal pin plug, so that the soldering paste is melted by baking the compression joint with fire, and the connection reliability of the signal pin plug and the data line core can be enhanced. Through the technology, the use reliability of the 2M wire is improved, the connection firmness is better, and a plurality of defects of the traditional electric welding can be better overcome.
The improved 2M connector is convenient to use and can be normally used in occasions without a power supply; the manufacture is simple, the 2M data line is well stripped, the tail end of the signal pin plug is inserted, the matched crimping pliers are used for crimping, and the signal pin is inserted after crimping; has the advantages of high manufacturing speed, safety, reliability, low manufacturing cost and the like.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1: the invention discloses a structural schematic diagram of an improved 2M connector;
FIG. 2: the invention relates to a structural schematic diagram of a signal needle (A-front view, B-cross section);
FIG. 3: the invention discloses a structural schematic diagram of a signal pin plug (A-front view and B-cross section);
FIG. 4: the first insulator of the invention has a schematic structure (A-front view, B-sectional view, C-left view);
FIG. 5: the structure of the second insulator of the invention is shown schematically (A-front view, B-left view);
FIG. 6: the invention relates to a structural schematic diagram of a first connecting piece (A-front view, B-sectional view);
FIG. 7: the structure of the second connecting piece of the invention is shown schematically (A-front view, B-cross section);
FIG. 8: the structure of the fixing nut of the invention is schematically shown (A-front view, B-sectional view);
FIG. 9: the state schematic diagram of the wire core of the 2M data wire inserted into the signal pin plug;
FIG. 10: a schematic structural diagram of embodiment 2 of the present invention;
FIG. 11: the structure of embodiment 3 of the invention is schematically illustrated;
FIG. 12: the structure of embodiment 4 of the invention is schematically illustrated;
FIG. 13: the structure of embodiment 5 of the invention is schematically illustrated;
FIG. 14: the invention is a structural schematic diagram of matched crimping pliers;
FIG. 15: the crimping die of the invention is structurally schematic (A-front view and B-side view).
Detailed Description
In order to better understand the present invention, the following examples are further provided to clearly illustrate the contents of the present invention, but the contents of the present invention are not limited to the following examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.
Example 1
Referring to fig. 1, the improved 2M connector of the present invention comprises a signal pin 1, a signal pin plug 2, insulators 301 and 302, connecting members 401 and 402, an elastic pad 5, a fixing nut 6, a fixing tube 7, a movable connecting body 8 and an end cap 9, wherein:
referring to fig. 2, the front end 101 of the signal pin 1 is a solid structure, the head of the signal pin is conical and is used for connecting with a corresponding 2M connector on a distribution cabinet, the tail end 102 of the signal pin is a hollow structure for inserting the signal pin plug, the signal pin is provided with a first step part 103 formed by protruding the outer surface of the signal pin, and the first step part is matched with insulators 301 and 302 to play a limiting role;
referring to fig. 3, the front end of the signal pin plug 2 is inserted into the signal pin, and the tail end 201 of the signal pin plug is a hollow structure for the insertion of a wire core of a 2M data line; the head of the front end 202 of the signal pin plug is conical, when the signal pin plug is used, a wire core of a 2M data wire is inserted into the tail end of the signal pin plug, and the signal pin plug is fixed by matched crimping pliers in a crimping mode; referring to fig. 9, the size of the signal pin plug should be adapted to the wire core 11 of the 2M data line 10, so as to ensure good contact and reliable connection after crimping;
the signal pin and the signal pin plug are matched in size, so that the signal pin plug is well connected and tightly contacted after being inserted into the signal pin, and good signal quality is obtained;
referring to fig. 1, 4-5, the insulator is sleeved outside the signal pin, and includes a first insulator 301 and a second insulator 302, the first insulator has a first hole 303 for passing the front end of the signal pin inside, the first insulator has a second step portion 304 outside, the second insulator has a second hole 305 for passing the tail end 102 of the signal pin inside, and the radius of the second hole 305 is smaller than the distance between the side wall of the first step portion 103 and the central axis of the signal pin and is larger than the radius of the first hole 303; the insulator is used for isolating the inner conductor and the shell of the 2M connector, plays an insulating role, and is matched and fixed with the signal pin through the second step part of the first insulator and the second insulator;
referring to fig. 6 to 7, the connecting piece comprises a first connecting piece 401 and a second connecting piece 402, the first connecting piece is of a hollow structure, a third step part 403 matched with the second step part is arranged inside the first connecting piece, a fourth step part 404 is arranged outside the first connecting piece, the fourth step part 404 is used for limiting the moving range of the movable connecting body 8, the tail end of the first connecting piece is in threaded connection with the front end of the second connecting piece, a stop part 405 is arranged inside the front end of the second connecting piece, and the insulator is fixed with the stop part through the third step part. The first connecting piece plays a role in fixing the inner insulator and limiting the movable range of the external movable connecting body, and is matched with the 2M connector of the distribution cabinet when the 2M connector is connected with the distribution cabinet; the second connecting piece is matched with the first connecting piece (for example, in threaded connection) to realize the fixation of the internal insulator, and a fixing position of a fixing nut and an end cap is provided, so that the 2M joint is safer and more reliable; the stop element can be composed of several discrete stop projections or can be a continuous stop ring.
In addition, a hollow portion 407 is disposed on the second connecting member, so that the tail end of the signal pin is exposed within the range of the hollow portion; therefore, the connection state of the signal pin plug and the 2M data wire core can be observed conveniently from the outside, and the operation is quicker.
Referring to fig. 1, the elastic pad 5 is a hollow structure for the 2M data line to pass through, and is disposed inside the tail end of the second connecting member; the elastic pad can be a soft rubber pad, and two ends of the elastic pad protrude out of the outer surface of the elastic pad to form flanges 501, so that the elastic pad is clamped and fixed at the tail end of the second connecting piece to prevent the elastic pad from falling off; on one hand, the elastic cushion shrinks inwards to press the 2M data wire in the process of screwing the fixing nut, and the fixing nut recovers to the original state after being loosened and can be used again; on the other hand, the elastic cushion has certain elasticity, plays a certain role in protecting the 2M data line, and weakens the possible damage to the second connecting piece caused by direct compression; in addition, the surface of the elastic cushion is rough, and the elastic cushion also has a certain anti-skidding function, so that the 2M data line is prevented from falling off;
referring to fig. 1, the fixing nut 6 is sleeved outside the tail end of the second connecting member; the fixing nut is used for fastening the tail end of the second connecting piece and further tightening the elastic pad and the 2M data wire. Referring to fig. 8, an anti-slip layer 601 is provided on the outside of the fixing nut 6. This skid resistant course can select the decorative pattern layer to fixation nut and the fixed frictional force between the pipe improve the firmness.
Referring to fig. 1, the fixing tube 7 is sleeved outside the fixing nut 6; after the 2M data line is manufactured, the shielding layer of the 2M data line is uniformly pressed outside the tail end of the second connecting piece through the matched crimping pliers, and a certain supporting effect is achieved when the data line is plugged and pulled;
referring to fig. 1, the movable connecting body 8 is sleeved outside the first connecting piece, and the end part is bent inwards and clamped on the fourth step part of the first connecting piece; the movable connector is inserted into a 2M connector of the digital distribution cabinet and is connected with a 2M terminal of the comprehensive digital distribution cabinet; plays a role in fixing. The 2M connectors are generally used in pairs, and for external equipment, one connector is used for receiving signals, and the other connector is used for transmitting signals, so that a complete channel is formed in a composite optical path to realize service propagation;
referring to fig. 1, the end cap 9 is sleeved on the outside of the second connecting member and the fixed tube, and is fixedly connected (e.g., screwed) with the second connecting member; the end cap is sleeved after the conductor of the 2M data line is screwed and the shielding layer is fixed, and has the effect of protecting the internal data line from short circuit after the 2M data line is manufactured.
In the invention, the signal pin plug, the connecting piece, the fixing nut, the movable connecting body and the end cap are preferably made of red copper, and the red copper has good ductility, so that the components cannot be crushed or damaged during compression joint, and the manufacturing speed of the field 2M data line is improved. The fixed pipe is preferably made of steel, and when the data line is manufactured, the shielding layer separated from the 2M data line is connected to the outer portion of the tail portion of the second connecting piece through the crimping pliers, so that the mechanical strength is high.
In the invention, the movable connecting body 8 is provided with an internal thread, the size of an opening at the end part is matched with a 2M joint of a digital distribution cabinet, and the two parts are connected through the internal thread.
In the invention, the end cap 9 is provided with internal threads to realize the connection with the external threads of the second connecting piece, thereby playing a role in protection.
The manufacturing method of the improved 2M joint comprises the following steps:
1) sequentially penetrating and fixing the signal pins in the second insulator and the first insulator;
2) the first insulator and the second insulator together with the signal pin penetrate into the first connecting piece, and a movable connecting body is sleeved on the outer portion of the first connecting piece;
3) fixing the elastic pad inside the tail end of the second connecting piece;
4) stripping an outer rubber layer of the 2M data line to be manufactured according to a certain length, separating the shielding layer from the insulating layer and exposing the wire core; sequentially enabling the 2M data line to be manufactured to pass through the end cap, the fixing pipe, the fixing nut and the second connecting piece;
5) inserting the wire core into the signal pin plug, and adopting matched crimping pliers to crimp;
6) inserting the signal pin plug into the hollow end of the signal pin and fixing;
7) fixing the second connecting piece with the first connecting piece, cutting a shielding layer of the 2M data line for a certain length and then uniformly covering the shielding layer outside the tail end of the second connecting piece,
8) screwing the fixing nut to fix the fixing nut with the second connecting piece, sleeving the fixing pipe on the fixing nut, and pressing and fixing the fixing pipe by using a crimping clamp;
9) screwing the end cap tightly to enable the end cap to be fixed with the second connecting piece through threads, and finishing the manufacture of the 2M data line;
10) inserting the completed 2M data line into a corresponding 2M connector in the digital distribution cabinet according to the requirement of a mode list so as to ensure that the connection is reliable; and (3) making a channel in a network management, configuring data to open the channel, debugging on site, carrying out short circuit on the 2M of the digital distribution cabinet, checking whether a near-end loop is normal, then connecting service equipment after switching, checking whether an optical machine alarms, and if all the circuits are normal, indicating that the loop has no problem.
Referring to fig. 14-15, the matched crimping pliers 13 includes a handle 1301, a fixed shaft 1302, a crimping mold 1303, a mold fixing screw 1304, a power assisting arm 1305 and a movable shaft 1306, the handle is connected to the power assisting arm, the crimping mold is disposed on the power assisting arm through the mold fixing screw, the crimping mold is composed of half molds 1307 symmetrically disposed at the front ends of the two power assisting arms, the opening portions 1308 of the two half molds are opposite, a closed space formed during crimping is adapted to the shape of the tail end of the signal pin, and the shape of the closed space is preferably regular hexagon.
Referring to fig. 15, the half mold 1307 includes the opening portion 1308, a fixing hole 1309 through which the mold fixing screw passes to fix the half mold on the assist arm, and a limiting step portion 1310 provided at a connection portion of the opening portion and the assist arm to fix an orientation of the opening portion.
When in compression joint, a user holds the handle of the compression joint pliers, the movable shaft moves outwards, the opening parts of the compression joint die move oppositely under the action of the assisting arm, the signal pin plug and the wire core of the 2M data wire are pressed together, tight contact is guaranteed after compression joint, compression joint is reliable, and contact resistance is in a qualified range.
Example 2
Referring to fig. 10, the difference between the improved 2M connector described in this embodiment and embodiment 1 is:
the tail end of the signal pin plug is provided with a chamfer part 203. This chamfer portion makes the tail end of signal pin plug expand slightly than the front end, and the 2M data line sinle silk of being convenient for inserts, easily operates more.
Example 3
Referring to fig. 11, the difference between the improved 2M connector described in this embodiment and embodiment 1 is:
the tail end of the signal pin plug is provided with a flared section 204, and the flared section 204 is provided with a plurality of longitudinal cracks. The number of the longitudinal cracks can be 2-4 according to needs, and the number of the longitudinal cracks does not limit the invention. Like this, can insert the appropriate degree of depth of this flaring section with the shielding layer of 2M data line to after the crimping, the sinle silk of signal pin plug and 2M data line is fixed more firmly, is difficult for droing, more durable.
Example 4
Referring to fig. 12, the difference between the improved 2M connector described in this embodiment and embodiment 1 is:
the inner surface of the signal pin plug is provided with a solder paste layer 12.
The solder paste is soft in texture, and is more firmly pressed and better in contact performance when the crimping pliers are used for crimping. Moreover, the soldering paste can be melted, matched and fixed by adopting a fire baking method after the compression joint, so that the firmness of the 2M data line and the signal pin plug is higher, the contact condition of the signal pin plug and the 2M data line is greatly improved, and the tightness is improved.
Example 5
Referring to fig. 1, the present embodiment describes an improved 2M connector, which is different from embodiment 1 in that:
the longitudinal section of the tail end of the second connecting piece 402 is in a symmetrical wedge shape, the longitudinal section of the side wall of the fixing nut 6 is in a wedge shape which is matched with the external shape of the second connecting piece, and the wedge angle of the second connecting piece is smaller than that of the fixing nut. The second connector has an external thread on the outside and the fixing nut has an internal thread on the inside for fitting the external thread. Fixation nut connects in the outside of second connecting piece, when fixation nut screwed up, produces pressure to the second connecting piece, and then compresses tightly 2M data line through the cushion to reinforcing second connecting piece and fixation nut's joint strength is difficult for droing.
Referring to fig. 13, the rear end of the second connecting member 402 is provided with a plurality of slits 406, for example, 2 to 4 slits. Therefore, in the process of screwing the fixing nut, the split is contracted, the pressure of the second connecting piece on the elastic cushion is increased, and the elastic cushion is tightened inwards.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. An improved generation 2M connects which characterized in that: the signal pin comprises a signal pin, a signal pin plug, an insulator, a connecting piece, an elastic pad, a fixing nut, a fixing pipe, a movable connecting body and an end cap, wherein one end of the signal pin is of a hollow structure and is used for the signal pin plug to insert; one end of the signal pin plug is of a hollow structure for the wire core of the 2M data wire to be inserted; the insulator is sleeved outside the signal pin; the connecting piece comprises a first connecting piece and a second connecting piece, the first connecting piece is sleeved outside the insulator, and the front end of the second connecting piece is fixed with the tail end of the first connecting piece; the elastic pad is arranged in the tail end of the second connecting piece; the elastic pad is of a hollow structure and is used for the 2M data line to pass through; the fixing nut is sleeved outside the tail end of the second connecting piece; the fixed pipe is sleeved outside the fixed nut; the movable connecting body is sleeved outside the first connecting piece; the end cap is sleeved outside the second connecting piece; the insulator includes a first insulator having a first hole in an interior thereof through which the signal pin passes, and a second insulator having a second hole in an interior thereof through which a tail end of the signal pin passes,
the manufacturing method of the improved 2M joint comprises the following steps:
1) sequentially penetrating and fixing the signal pins in the second insulator and the first insulator;
2) the first insulator and the second insulator together with the signal pin penetrate into the first connecting piece, and a movable connecting body is sleeved on the outer portion of the first connecting piece;
3) fixing the elastic pad inside the tail end of the second connecting piece;
4) stripping an outer rubber layer of the 2M data line to be manufactured according to a certain length, separating the shielding layer from the insulating layer and exposing the wire core; sequentially enabling the 2M data line to be manufactured to pass through the end cap, the fixing pipe, the fixing nut and the second connecting piece;
5) inserting the wire core into the signal pin plug, and adopting matched crimping pliers to crimp;
6) inserting the signal pin plug into the hollow end of the signal pin and fixing;
7) fixing the second connecting piece with the first connecting piece, cutting a shielding layer of the 2M data line for a certain length and then uniformly covering the shielding layer outside the tail end of the second connecting piece,
8) screwing the fixing nut to fix the fixing nut with the second connecting piece, sleeving the fixing pipe, and pressing and fixing the fixing pipe by using a crimping clamp;
9) screwing the end cap tightly to enable the end cap to be fixed with the second connecting piece through threads, and finishing the manufacture of the 2M data line;
10) inserting the completed 2M data line into a corresponding 2M connector in the digital distribution cabinet according to the requirement of a mode list so as to ensure that the connection is reliable; and (3) making a channel in a network management, configuring data to open the channel, debugging on site, carrying out short circuit on the 2M of the digital distribution cabinet, checking whether a near-end loop is normal, then connecting service equipment after switching, checking whether an optical machine alarms, and if all the circuits are normal, indicating that the loop has no problem.
2. The improved 2M fitting according to claim 1, wherein: the signal pin is provided with a first step part formed by protruding the outer surface of the signal pin; the first insulator is provided with a second step part outside, the first connecting piece is provided with a third step part matched with the second step part inside, the first connecting piece is provided with a fourth step part outside, the tail end of the first connecting piece is in threaded connection with the front end of the second connecting piece, the second connecting piece is internally provided with a stop piece, and the insulator is fixed through the third step part and the stop piece; the end part of the movable connector is bent inwards and clamped on the fourth step part; the end cap is fixedly connected with the second connecting piece.
3. The improved 2M joint as defined in claim 2, wherein: and the tail end of the signal pin plug is provided with a chamfer part.
4. The improved 2M fitting according to claim 2, wherein: and the tail end part of the signal pin plug is provided with an expanding section.
5. The improved 2M fitting according to claim 4, wherein: and the inner surface of the signal pin plug is provided with a solder paste layer.
6. The improved 2M joint as defined in claim 2, wherein: the longitudinal section of the tail end of the second connecting piece is in a symmetrical wedge shape, the longitudinal section of the side wall of the fixing nut is in a wedge shape matched with the outer shape of the second connecting piece, and the wedge angle of the second connecting piece is smaller than that of the fixing nut.
7. The improved 2M joint as defined in claim 6, wherein: and a plurality of splits are axially arranged at the tail end of the second connecting piece.
8. The improved 2M joint as defined in claim 7, wherein: the matched crimping pliers comprise a handle, a fixed shaft, crimping dies, die fixing screws, a power assisting arm and a movable shaft, wherein the handle is connected with the power assisting arm, the crimping dies are arranged on the power assisting arm through the die fixing screws, the crimping dies are composed of half dies symmetrically arranged at the front ends of the two power assisting arms, the opening parts of the two half dies are opposite, and a closed space formed during pressing is matched with the tail end shape of a signal needle.
9. The improved 2M fitting according to claim 8, wherein: the half mould comprises the opening part, a fixing hole and a limiting step part, the mould fixing screw penetrates through the fixing hole to fix the half mould on the power assisting arm, and the limiting step part is arranged at the joint of the opening part and the power assisting arm to enable the orientation of the opening part to be fixed.
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| CN201710134475.3A CN106711624B (en) | 2017-03-08 | 2017-03-08 | Improved 2M connector and manufacturing method thereof |
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| CN201710134475.3A CN106711624B (en) | 2017-03-08 | 2017-03-08 | Improved 2M connector and manufacturing method thereof |
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| CN106711624B true CN106711624B (en) | 2022-07-05 |
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| JP7496994B2 (en) * | 2021-01-29 | 2024-06-10 | 日本圧着端子製造株式会社 | Terminals and how to connect them to cables |
| CN114678753B (en) * | 2022-03-10 | 2022-12-30 | 德尔特微波电子(南京)有限公司 | High-performance SMP cable connector connecting method and connecting structure |
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