CN2319932Y

CN2319932Y - RF coaxial connector

Info

Publication number: CN2319932Y
Application number: CN 97221475
Authority: CN
Inventors: 鞠玮; 杨士明; 李振生
Original assignee: Sanwei Electric Appliance Co Beijing
Current assignee: Beijing Shouxin Yineng Telecom Co., Ltd.
Priority date: 1997-07-22
Filing date: 1997-07-22
Publication date: 1999-05-19
Anticipated expiration: 2007-07-22

Abstract

The utility model relates to an RF coaxial connector which is composed of a socket and a plug. The structure of the external appearance of the socket is identical to that of the socket of the NEC company. The socket comprises an outer conductor, an insulator and a pressing sleeve and has the improvement that an inner conductor which electrically contacts contact pins is changed into a component composed of an inner conductor, a liner bushing, a beryllium bronze wire spring hole and a sheath which are processed, gilded and assembled independently, and the defect that an original small blind hole is poor in gilding and contact reliability can be avoided; moreover, the inner conductor of the structure of the wire spring hole is gentle in inserting and pulling operation and is favorable in elastic property, and can protect the gilded layer and can be interchanged with the original inner conductor. The utility model is favorable to the update and improvement of equipment and can improve the electric reliability of electric contact.

Description

Radio frequency (RF) coaxial connector

The utility model relates to a kind of coaxial cable connector, particularly relates to the wire spring type radio frequency (RF) coaxial connector of the imitative NEC Corporation of a kind of contour structures connector, belongs to the line connector technical field.

The coaxial connector complete connection that the coaxial cable that the loop of rf in communication equipment and wireless instruments uses normally is made of socket and plug, be about to socket, plug respectively with after coaxial cable is connected, interconnect 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 inner wire 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.The drawback that has above-mentioned loose contact as the connector of the one Japanese NEC Corporation of major company of world-renowned telecommunications industry equally.

In fact, at present the structural design and the manufacturing process of the interior guiding element 1 in the connector body (comprising NEC Corporation's product) that uses 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 glass bronze bar to close up and heat treatment after turning, boring, groove milling, and 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 recovery gradually can make elasticity reduce and disappear, 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 2, 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, elasticity is excessive after the heat treatment, inserting scratch contact pin on time, Gold plated Layer is scratched 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 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, exchange supporting wire spring type radio frequency (RF) coaxial connector with the NEC Corporation connector, this device substitutes original structure with the inner wire of line spring pore structure, and new, old structure can exchange, can effectively improve circuit transmission quality and functional reliability, can on circuit, change easily again with the connector of former model.

The utility model is achieved in that by socket, plug two parts and constitutes, wherein the contour structures of socket is identical with the socket of NEC Corporation: the cylinder type member that is provided with through hole for the one sidewall, mainly include: outer conductor, insulator, gland and inner wire are formed, and 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 cylindrical inner conductor that an end is provided with blind hole, gland has the cylindrical shape neck bush in its circular hole, all constitute the line spring that the bronzing silk of same angle angle is formed with axis in the uniform six roots of sensation that is fixed with of the endoporus of neck bush, the neck bush outside is provided with its external diameter oversheath identical with inner conductor outer diameter.

The two ends circumference external diameter of above-mentioned neck bush 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 thread spring.

The beryllium-bronze silk of above-mentioned line spring and the angle of axis should be the 6-12 degree.

Characteristics of the present utility model are the socket sheet spring formula inner wires that will be the small blind hole structure originally, be made of single component, be modified into inner wire group for forming by four parts, these four parts can be distinguished and process gold-plated assembling separately, thereby avoid small blind hole gold-plated, improve gold plating quality.Especially the beryllium-bronze silk outer surface that contacts with contact pin adopts outer surface gold-plated, and gold plating quality is improved greatly, and control easily, can guarantee to electrically contact reliable.It is angled evenly distributed on circumference with straight edge line by single leaf revolution that the utility model is provided with five beryllium-bronze silks, in the middle of the contact pin of socket, form two ends big, middle little wire spring type larynx footpath jack A (referring to Fig. 5) 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 inserts line spring hole, contact pin can radially efflux line spring silk, make line spring line form inside steady pressure to contact pin, and many gold-plated line spring silk envelopes are in the cylinder circumference of contact pin, contact simultaneously with contact pin equably, 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 plug elasticity, has protected the Gold plated Layer of line spring silk again.In addition, because inner wire group after improving and the inner wire of former NEC can exchange, make rack-mounted NEC connector can adopt the utility model renewal that undergoes technological transformation, make the connector that influences the communication line transmission quality improve problem and can access both economical and effective solution.

Fig. 1 is inner wire in the socket in the radio frequency (RF) coaxial connector that uses now and the contact pin structural representation in the plug.

Fig. 2 is the socket schematic diagram of the present NEC Corporation's radio frequency (RF) coaxial connector that uses.

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.

Referring to Fig. 3, Fig. 4, Fig. 5, the utility model also is made up of socket and plug two parts, wherein plug is changed, but the appearance structure socket identical with the NEC Corporation connector improved, the appearance structure of this socket still connector with NEC Corporation is identical: socket 3 is provided with the cylinder type member of through hole for the one sidewall, mainly include: outer conductor 5, insulator 6, gland 7, inner wire group 8 is formed, and its main improvements are to realize that with the contact pin 21 of 2 li of plugs the inner wire that electrically contacts changes an assembly 8 that is made of four parts into by an independent part 1 that is provided with small blind hole and open slot in the socket 3; Its outside is the cylindrical inner conductor 81 that an end is provided with blind hole, gland has cylindrical shape neck bush 82 in its circular hole, the uniform six roots of sensation that is fixed with all constitutes the line spring 83 that the bronzing silk of same angle angle constitutes with axis in the endoporus of neck bush 82, the angle of beryllium-bronze silk and axis should be the 6-12 degree, shape after this six roots of sensation beryllium-bronze silk installs in lining 82 promptly constitutes the line spring pore structure shape of being small at both ends and big in the middle as shown in Figure 5.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 between this circular hole and the lining two ends external diameter can ccontaining clamping beryllium-bronze silk thread spring 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 connector that substitutes original sheet spring structure inner wire 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 occupation mode of the present utility model also connector with original structure is identical, also be that the contact pin in the plug is inserted inner wire group in the middle of the socket, when contact pin when the line spring hole of beryllium-bronze silk is slipped 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 have 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, only is 10 through the failure rate of calculating this sample ^-8-10 ^-9, reliability is high.

Claims

1, a kind of radio frequency (RF) coaxial connector, constitute by socket, plug two parts, wherein the contour structures of socket is identical with the socket of NEC Corporation: the cylinder type member that is provided with through hole for the one sidewall, mainly include: outer conductor, insulator, gland and inner wire are formed, and 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 cylindrical inner conductor that an end is provided with blind hole, gland has the cylindrical shape neck bush in its circular hole, all constitute the line spring that the beryllium-bronze silk of same angle angle is formed with axis in the uniform six roots of sensation that is fixed with of the endoporus of neck bush, the neck bush outside is provided with its external diameter oversheath identical with inner conductor outer diameter.

2, radio frequency (RF) coaxial connector as claimed in claim 1, it is characterized in that: the two ends circumference external diameter of above-mentioned neck bush 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 thread spring.

3, radio frequency (RF) coaxial connector as claimed in claim 1 is characterized in that: the beryllium-bronze silk of above-mentioned line spring and the angle of axis should be the 6-12 degree.