CN2372801Y - Connector for radio-frequency coaxial cable - Google Patents

Abstract

The utility model relates to a connector for a radio-frequency coaxial cable, which is composed of a plug and a socket, wherein, the contour structure of the socket is identical to that of a BNC-type socket; the socket is a cylindrical element and comprises an outer conductor, an inner conductor, a clamping ring, an insulator and a locking nut. The connector for a radio-frequency coaxial cable is characterized in that the inner conductor in the socket, which is electrically contacted with contact pins in the plug is a component composed of four parts; one end of the outer side of the inner conductor is a cylindrical inner conductor provided with a blind hole. The inner part of a circular hole is pressed with a cylindrical bush, an inner hole of which is uniformly distributed with six beryllium bronze threads which have the same included angle with the axis, and the outer side of which is provided with a sheath. In addition, the external diameter of the sheath is identical to the external diameter of the inner conductor.

Description

The radio frequency coaxial-cable connector

The utility model relates to a kind of radio frequency coaxial-cable connector, particularly relates to a kind of wire spring type radio frequency coaxial-cable connector of BNC type connector, belongs to the line connector technical field.

The coaxial cable that the loop of rf in communication equipment and wireless instruments uses is the coaxial connector complete connection that is made of socket and plug, is about to socket, plug respectively with after coaxial cable is connected, and interconnects again, just can realize continuing of coaxial cable.According to reflection of many telecommunication bureaus and investigation, the main cause that the digital circuit transmission course error rate is high is the coaxial connector loose contact as connector, concrete crux is exactly the jack in the socket and the contact pin loose contact of plug, and this loose contact has the not trackability of irregularities, has a strong impact on communication quality.

In fact, at present the structural design and the manufacturing process of the inner wire in the various connector bodies that comprise the BNC type that use exist many factors that cause poor electric contact.Referring to Fig. 1 and Fig. 2, at first the inner wire 1 of the sheet spring structure in the socket is to adopt the beryllium-bronze bar to close up after turning, boring, groove milling through heat treatment, obtains elasticity, last gold-plated processing.Utilize its elasticity, the radial pressure that the contact pin 21 of plug 2 inserts its jack 11 back formation guarantees to electrically contact reliably.Since the internal pressure of socket itself, growth in time, internal stress is recovered to make elasticity to reduce gradually and is disappeared, thus radial pressure diminishes, and can't guarantee to contact with the reliable of contact pin.In addition, because the jack 11 of inner wire 1 is that small blind hole is gold-plated, its endoporus is difficult to plated with gold, and the inwall of the jack exactly 11 that contacts with contact pin 21, so poor electric contact just is difficult to avoid.Moreover after contact pin 21 inserted jacks 11, both were not the face contacts, but several points of two fan-shaped lines 12 on the jack 11 contacts with contact pin 21, and contact-making surface is very little, be easy to cause contact unreliable, and even inefficacy.Also have through the plug Gold plated Layer to be worn away easily, conductive surface generates sulfide; Moreover the dust in the jack also is to cause the reason that electrically contacts fault.At last, wayward because of processing in the closing in of inner wire 1, cause and close up too much, heat treatment elasticity is excessive, and scratch contact pin when pegging graft scratches Gold plated Layer easily, has a strong impact on the quality that electrically contacts.

Along with the digitlization of telecommunication circuit, the application of radio frequency (RF) coaxial connector is extensive day by day.For example, on digital distribution frame, often once just concentrate connector or the connector that has used the various models of hundreds and thousands of covers, so, effectively reduce the error rate, improve the communication line transmission quality and must adopt the high line connector of reliability.

The purpose of this utility model provide a kind of adopt line spring pore structure inner wire, with the mutual supporting wire spring type radio frequency (RF) coaxial connector of BNC type connector.This device substitutes original structure with inner wire of line spring pore structure, and new, old structure can exchange, and can effectively improve circuit transmission quality and functional reliability, can change with the connector of former model on circuit easily again.

The utility model is achieved in that by plug, socket two parts constitute, wherein the contour structures of socket is identical with BNC type socket: socket is a garden cartridge type member, include outer conductor, inner wire, trim ring, insulator, locking nut, it is characterized in that: in the socket with plug in contact pin realize that the inner wire electrically contact is an assembly that is made of four parts: its outside is the garden cylindricality inner wire that an end is provided with blind hole, in its circular hole, be pressed with the cylindrical shape lining, the endoporus of lining is uniform to be fixed with the six roots of sensation all becomes same angle angle with axis beryllium-bronze silk, and the lining outside is provided with its external diameter sheath identical with inner conductor outer diameter.

The two ends circumference external diameter of above-mentioned lining should be less than the circumference external diameter in the middle of it, so that behind this lining embedding inner wire circular hole, the gap between this circular hole and the lining two ends external diameter can ccontaining clamping beryllium-bronze silk.

The angle of above-mentioned beryllium-bronze silk and axis is 6～10 degree.

Characteristics of the present utility model are: the socket inner wire that will be the small blind hole structure originally, be made of single component, be modified into inner wire group for constituting by four parts, such four parts can be distinguished and process gold-plated assembling separately, can avoid small blind hole gold-plated, improved gold plating quality, the beryllium-bronze silk outer surface that especially contacts with contact pin also is to adopt outer surface gold-plated, and gold plating quality is improved greatly, and control easily can guarantee to electrically contact reliable.The utility model is provided with six roots of sensation beryllium-bronze silk and axis is angled evenly distributed on circumference, in the middle of the jack of socket, form the wire spring type larynx footpath jack A (referring to Fig. 5) that is small at both ends and big in the middle naturally, thisly being commonly called as the abbreviation that line spring hole is one sheet hyperboloid line spring hole, is the high connected mode of a kind of contact reliability.When contact pin inserted line spring hole, contact pin can radially efflux line spring silk, makes line spring silk form inside steady pressure to contact pin, and many gold-plated line spring silk envelopes contact with contact pin around contact pin equably simultaneously, not only increase contact-making surface, reduced contact resistance, make electrically contact more reliable; And even, stable radial pressure makes contact pin more apparent soft with contacting with plug of jack, and not fragile line spring silk makes it both to keep plugging elasticity, has protected the Gold plated Layer of line spring silk again.In addition, because the inner wire group after improving and the inner wire of former BNC type can exchange, make it rack-mounted BNC type contact and can adopt the utility model to transform renewal, make the connector that influences the communication line transmission quality improve problem and can access both economical and effective solution.

Fig. 1 is the socket schematic diagram of the present BNC type radio frequency (RF) coaxial connector that uses.

Fig. 2 is the inner wire in the socket and the contact pin structural representation in the plug in the BNC type radio frequency (RF) coaxial connector that uses now.

Fig. 3 is the socket schematic diagram in the utility model.

Fig. 4 is the inner wire modular construction schematic diagram in the socket in the utility model.

Fig. 5 is the beryllium-bronze silk scheme of installation in the socket in the utility model.

Also be made up of plug and socket two parts referring to Fig. 3, Fig. 4, Fig. 5, the utility model, wherein plug is changed, but the socket of BNC type connector is improved.The contour structures of this socket is still identical with the BNC type: socket is the cylinder type member, include inner wire 1, insulator 3, locking nut 4, trim ring 5, outer conductor 6 (referring to Fig. 1), its main improvements are to realize that with the contact pin 21 of 2 li of plugs the inner wire 1 that electrically contacts is changed into the assembly 8 (referring to Fig. 3 and Fig. 4) that is made of four parts by an independent part in the socket: its outside is the cylindrical inner conductor 81 that an end is provided with blind hole, in its circular hole, be pressed with cylindrical shape lining 82, in the endoporus of lining 82, fix the uniform six roots of sensation all becomes same angle angle with axis the beryllium-bronze silk 83 that is equipped with, beryllium-bronze silk 83 should be the 6-10 degree with the angle of axis, shape after this six roots of sensation beryllium-bronze silk installs in lining 82 as shown in Figure 5, it is big promptly to constitute two, middle little line spring pore structure shape.Wherein the two ends circumference external diameter of neck bush 82 should be less than the circumference external diameter in the middle of it, so that behind these lining 82 embedding inner wires 81 circular holes, the gap of this circular hole and lining two ends external diameter can ccontaining clamping beryllium-bronze silk 83.And being provided with oversheath 84 in lining 82 outsides of exposing the inner wire 8 blind holes outside, the interior external diameter size of this thin walled cylindrical sheath 84 is identical with the interior external diameter of inner wire 8 circular hole ends one side.

Referring to Fig. 1 and Fig. 3, the utility model is the inner wire that substitutes original sheet spring structure with the inner wire of line spring pore structure, and new and old structure can exchange, and changing for the connector on the available circuit like this provides and may and make things convenient for.And, the using method of the present utility model also connector with original structure is identical, also be that the contact pin in the plug is inserted in the inner wire assembly in the middle of the socket, when contact pin when the outer surface of beryllium-bronze silk slips into, make the beryllium-bronze silk produce stable radial pressure to contact pin.This moment, six roots of sensation beryllium-bronze silk envelope was around the face of cylinder of contact pin, constituted many one metal wires parallel system of multi-thread contact, was equivalent to severally use pin hole is in parallel, and electrical contact reliability is obviously improved.

The utility model is manufactured experimently out some samples and is tested enforcement, and through measuring and calculating, the failure rate of this sample only is 10 ^-8-10 ^-9, reliability is high.

Claims (3)

1, a kind of radio frequency coaxial-cable connector, by plug, socket two parts constitute, wherein the contour structures of socket is identical with BNC type socket: socket is a garden cartridge type member, include outer conductor, inner wire, trim ring, insulator, locking nut, it is characterized in that: in the socket with plug in contact pin realize that the inner wire electrically contact is an assembly that is made of four parts: its outside is the garden cylindricality inner wire that an end is provided with blind hole, in its circular hole, be pressed with the cylindrical shape lining, the endoporus of lining is uniform to be fixed with the six roots of sensation all becomes same angle angle with axis beryllium-bronze silk, and the lining outside is provided with its external diameter sheath identical with inner conductor outer diameter.

2, radio frequency coaxial-cable connector as claimed in claim 1, it is characterized in that: the two ends circumference external diameter of above-mentioned lining should be less than the circumference external diameter in the middle of it, so that behind this lining embedding inner wire circular hole, the gap between this circular hole and the lining two ends external diameter can ccontaining clamping beryllium-bronze silk.

3, radio frequency coaxial-cable connector as claimed in claim 1 is characterized in that: the angle of above-mentioned beryllium-bronze silk and axis is 6～10 degree.

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