CN2501199Y

CN2501199Y - Contact terminal for connector of telecommunication distributor

Info

Publication number: CN2501199Y
Application number: CN 01263623
Authority: CN
Inventors: 陈博义
Original assignee: Shitong Electronic Co ltd
Current assignee: Shitong Electronic Co ltd
Priority date: 2001-09-12
Filing date: 2001-09-12
Publication date: 2002-07-17
Anticipated expiration: 2011-09-12

Abstract

The utility model discloses a contact terminal of a telecom distributor joint, which is embedded at the center of the joint. The contact terminal comprises a circular tubular tube body which is hollow relative to both ends. One end of the tube body is provided with a mouth, and a welding part is formed at the other end. Furthermore two opposite grooves and an expanding rebate communicated with the two grooves is orderly and perpendicularly extended from the direction of the mouth towards the other end, therefore making the tube body form two opposite and separated arc clamps. Three or more than three convex points which are annularly provided with equidistance and are relatively convex towards the center of the mouth are formed at the place of the two arc clamps near the mouth to strengthen the ductibility of the two arc clamps and enhance the elastic clamping force thereof.

Description

The contact terminal of telecommunications distributor joint

[technical field]

The utility model relates to a kind of contact terminal of telecommunications distributor joint.

[background technology]

With reference to Figure 1 and Figure 2, a kind of in the past video distribution of cable TV or the telecommunications distributor 1 of the generally signal of telecommunication distribution of electronic instrument and structure of joint 12 thereof of being used in shown in the figure, described telecommunications distributor 1 mainly is to be provided with a circuit board 11 in a housing 10, and be provided with several joints 12 in the side of described housing 10, and the inside of each described joint 12 is embedded with a contact terminal 20, the end (socket 21) that described contact terminal 20 is coated in the joint 12 can supply cable inserted terminal grafting conducting, and its other end (welding ends) 15 exposes to outside the described joint 12 and can be welded on the circuit board 11.

As shown in Figure 2, the welding ends 15 of described contact terminal 20 is to insert earlier in the interior chock 16 of an insulation of presetting, be fixed in the joint 12 after then described contact terminal 20 being inserted in the insulation body 17, and the socket 21 that contact terminal 20 other ends are formed open front 18 of aiming at described insulation body 17, peg graft for cable.Described contact terminal 20 is to be made of two 22,23 of relative lamellar bodies, and is being formed with outstanding block fin 24,25 near the centre position, and the bottom of described block fin 24,25 (being welding ends 15) supplied and described circuit board 11 welding by pressing.And the top of described block fin 24,25 is respectively equipped with mutually externally

oblique tabs

26,27, and wherein one folding piece 27 is provided with two

side edgefolds

28,29 in addition, and forms described socket 21 jointly with tabs 26.Therefore, as shown in Figure 3, when a cable inserted terminal 200 is inserted by the open front 18 of insulation body 17, can compel the relative

lamellar body

22,23 of Zhang Suoshu contact terminal 20, then, described cable inserted terminal 200 can be held in the described contact terminal 20 by the elastic restoring force of

lamellar body

22,23 itself.

But above-mentioned contact terminal 20 but has following shortcoming:

(1) as shown in Figures 2 and 3, when described cable inserted terminal 200 inserts described contact terminal 20, the described cable inserted terminal 200 of clamping power clamping of described contact terminal 20 resilience after almost just externally

oblique tabs

26,27 broken line places 261,271 are forced to mutually with the top, so the part that contact terminal 20 contacts with described cable inserted terminal 200 almost has only described broken line place 261,271, both contact structures rather unstables, it is unsatisfactory therefore to contact effect.

(2) contact terminal 20 is with welding ends 15 and circuit board 11 welding, two relative

lamellar bodies

22,23 are opened elastic closure when including cable inserted terminal 200 or described inserted terminal 200 in and withdrawing from stressed bullet, its main stress point is all at described welding ends 15 with the seam of a small amount of scolding tin, be easy to described welding ends 15 is formed the strength of peeling off, and influence the function that connects of contact terminal 20.

(3) described contact terminal 20 is a flat, cause the distance with circle tube joint 12 to differ, make when transmitting high-frequency signal, because signal is the surface of walking at contact terminal 20, and when the distance of 20 of joint 12 and contact terminals not for the moment, promptly can cause the change of impedance therebetween, and have influence on the stability that high-frequency signal transmits.

Refer again to Fig. 4～shown in Figure 6, the structure of the another kind contact terminal in the past that is disclosed in No. the 301485th, the patent announcement of Taiwan shown in the figure " the embedded high-frequency contact chip improvement of cable and distributor joint structure ", be formed with an open circles tubulose socket end 31 on the described contact terminal 30, supply to be coated in an insulation body 41 and the interior chock 42, and its default block fin another welding ends 34 below 32,33 is exposed to outside the described insulation body 41.Port by described open circles tubulose socket end 31 is extended with a plurality of axial grooves 35 downwards, and form a plurality of arc calvus 37 between the axial groove 35 in twos, and each described arc calvus 37 is formed with a recess 38 respectively near the port, and relatively in the port center outstanding float face 39.Therefore, when the cable inserted terminal inserted the socket end 31 of contact terminal 30, described arc calvus 37 stressed compeling were opened, rebound after outwards opening earlier, and with the clamping of described cable inserted terminal wherein.

Though above-mentioned contact terminal 30 can constitute comparatively firm engagement state, but because described arc calvus 37 is when the cable inserted terminal inserts, its stressed root that is concentrated in, that is the bottom of axial groove 35, and can produce sizable stress concentration effect, under long-time grafting, form elastic fatigue easily, and cause loose contact.

In addition, modular connection according to the U.S. communication Television Engineer IPS-SP-407 of association file institute standard, its definition is must be after pegging graft with the cable of max line footpath 1.3mm, peg graft with the cable of minimum line footpath 0.6mm again, and both contact resistance value differences all must not be bigger than 50m Ω, to determine whether the contact terminal in the described joint still has good chucking power, and judge whether conformance with standard of described joint, but present and above-mentioned two kinds of contact terminals 20 in the past, 30 all can't reach this requirement, and can only be applicable to the cable inserted terminal in 0.8～1.1mm line footpath at most.

[utility model content]

The purpose of this utility model is to provide a kind of contact terminal with telecommunications distributor joint of favorable elasticity chucking power.

The contact terminal of the utility model telecommunications distributor joint is in order to the center of interlocking at described joint, described contact terminal comprises that one has the hollow round tubular body of relative first end and second end, first end of described body is formed with an opening, its second end is formed with one and is positioned at weld part on the same axis with body, and be extended with two relative elongated slots by described opening in regular turn towards described second extreme direction and reach the expansion notch that is communicated with described two elongated slots, make described body form two relatively and the arc clip that is separated from each other, and described two arc clips are in being formed with the salient point that protrudes and be equidistant annular array more than three towards described open centre relatively near described opening part.

Adopt such scheme, when the cable inserted terminal is inserted by the opening of described hollow round tubular body, can be subjected to the stable and flexibly clamping of described salient point of described two arc clips, and enlarge the extension power that notches are strengthened described two arc clips by described two, make described two arc clips can keep the better elastic chucking power.

[description of drawings]

Be elaborated below by preferred embodiment and accompanying drawing contact terminal to telecommunications distributor joint of the present utility model, in the accompanying drawing:

Fig. 1 is the external structure of a kind of in the past telecommunications distributor and joint thereof;

Fig. 2 is the three-dimensional exploded view of a kind of in the past contact terminal and its associated component;

Fig. 3 is the assembled sectional view of Fig. 2;

Fig. 4 is the three-dimensional exploded view of another kind of in the past contact terminal and its associated component;

Fig. 5 is the assembled sectional view of Fig. 4;

Fig. 6 is the vertical view of Fig. 4;

Fig. 7 is the stereogram of a preferred embodiment of the contact terminal of telecommunications distributor joint of the present utility model;

Fig. 8 is the vertical view of Fig. 7;

Fig. 9 is the schematic diagram that forms another form of three salient points described in the embodiment of Fig. 7 on two arc clips;

Figure 10 is the contact terminal of Fig. 7 and the three-dimensional exploded view of its associated component;

Figure 11 is the schematic diagram that the insulation shell in the displayed map 9 is made up of all right one way or the other lid that covers relatively;

Figure 12 is the three-dimensional assembled sectional view of Fig. 9;

Figure 13 and Figure 14 are the end view and the top views of the contact terminal of Fig. 7, and it shows the aspect when described contact terminal is not pegged graft a cable inserted terminal.

Figure 15 and Figure 16 are the end view and the vertical views of the contact terminal of Fig. 7, show among the figure when described contact terminal is pegged graft a cable inserted terminal, and described two arc sheet double-layered quilts compel to open the form that reaches the described cable inserted terminal of described salient point clamping.

[embodiment]

Consult shown in Figure 7, it is a preferred embodiment of the contact terminal 5 of the utility model telecommunications distributor joint, described contact terminal 5 has a hollow round tubular body 51, it has the first relative end and second end, first end is formed with an opening 52, the second ends and then forms one and be positioned at weld part 54 on the same axis with described body 51.Be extended with two relative elongated slots 521 from described opening 52 in regular turn towards described second extreme direction and reach the expansion notch 522 that is communicated with described elongated slot 521, make described body 51 form two relatively and the arc clip 511,512 that is separated from each other, and be formed with two salient points 513 that protrude relatively towards described opening 52 centers respectively near described opening 52 places in described two arc clips 511,512, as shown in Figure 8, and described salient point 513 be to be equidistant annular array.

Certainly, being formed on salient point on described two arc clips 511,512 has more than and is limited to two, as shown in Figure 9, also can form a salient point 516 in one of them internal face of described two arc clips 514,515, internal face at another forms two salient points 517,518, and described salient point the 516,517, the 518th, is equidistant annular array.Therefore, one of characteristic of the present utility model is can be provided with on described two arc clips salient point more than three, and described salient point mainly is the form setting with equidistant annular array.

Then, with reference to shown in Figure 10, described contact terminal 5 is to be mounted in the insulation shell 6 with in the joint (not shown) that is fixed on described telecommunications distributor.As shown in figure 11, described insulation shell 6 is by all right one way or the other lid that covers relatively 61,62 form, two

lids

61,62 periphery be provided with can corresponding engaging recess 611,612 and salient point 621,622, after it covers relatively can in the two formation be connected on, under

shed

63,64, and in its inner form one can be for the ccontaining space 65 of described hollow round tubular body 51, and on the lower end internal face of a lid 61 wherein, be formed with the location division 613 of weld part 54 shapes that cooperate described contact terminal 5, be embedded the location for described weld part 54, so that described contact terminal 5 blockings are fixed in the described insulation shell 6, and described weld part 54 can be exposed to outside the described insulation shell 6, and the form after its combination as shown in figure 12.

Then with reference to Figure 13 and shown in Figure 14, be a cable inserted terminal 8 when not inserting in the described contact terminal 5, the form of described two arc clips 511,512 and described salient point 513.Refer again to Figure 15 and shown in Figure 16, when a cable inserted terminal 8 is inserted by the opening 52 of the hollow round tubular body 51 of contact terminal 5, it compels Zhang Suoshu two arc clips 511, four salient points 513 on 512, and force described two arc clips 511,512 outwards open, then described two arc clips 511,512 promptly are clamped in described cable inserted terminal 8 between the described salient point 513 by its elastic-restoring force, and because described salient point 513 is the peripheries that are evenly distributed in opening 52, and protrude simultaneously towards opening 52 centers by four direction, so cable inserted terminal 8 can be clamped to effectively the center of opening 52, and make cable inserted terminal 8 can not produce deflection with described hollow round tubular body 51 keeping parallelism states, make the signal that on cable, transmits can keep stable.

In addition, by at the designed expansion notch 522 in described two elongated slots 521 bottoms of described hollow round tubular body 51, can strengthen the extension power of described two arc clips 511,512, the unlikely bottom that concentrates on described hollow round tubular body 51 of urgent tension force that is produced when cable inserted terminal 8 is inserted, and can avoid the elastic fatigue of pegging graft and being produced, and increase the chucking power and the elasticity of described two arc clips 511,512 because of long-time.And learn by actual experiment, contact terminal 5 of the present utility model is pegged graft with the cable inserted terminal of max line footpath 1.3mm, its contact resistance value difference all is lower than 50m Ω, and then after the cable inserted terminal grafting with minimum line footpath 0.6mm, still have better elastic and chucking power, and can be applicable to the cable inserted terminal of line footpath 0.6～1.3mm scope and reach the standard of institute of U.S. communication Television Engineer association standard.

In sum, form four salient points 513 that are equal to spacing and circular array on two arc clips 511,512 of the empty therein pipe shape of contact terminal 5 body 51 of the utility model telecommunications distributor joint, and the formed expansion notch 522 in elongated slot 521 lower ends between two arc clips 511,512, make cable inserted terminal 8 can be subjected to described salient point 513 when inserting by the simultaneously past opening 52 central packing contacts of four direction, and firmly be clamped in opening 52 central authorities and maintenance and opening 52 plumbnesss, and more stable chucking power is provided.And, more can strengthen the extension power of described two arc clips 511,512 by the design of described expansion notch 522, and increase the chucking power and the elasticity of described two arc clips 511,512, enable to accept more times plug of counting of cable inserted terminal of bigger wire range, compared to above-mentioned contact terminal in the past, can provide better clamping effect really.

Claims

1, a kind of contact terminal of telecommunications distributor joint at described joint center, is characterized in that described contact terminal includes in order to interlocking:

One hollow round tubular body, have the first relative end and second end, first end is formed with an opening, second end is formed with one and is positioned at weld part on the same axis with described body, and be extended with two relative elongated slots from described opening in regular turn towards described second extreme direction and reach the expansion notch that is communicated with described elongated slot, make described body form two relatively and the arc clip that is separated from each other, and on described two arc clip internal faces, be formed with the salient point that protrudes and be equidistant annular array more than three towards described open centre relatively near described opening part.

2, the contact terminal of telecommunications distributor joint according to claim 1 is characterized in that: be respectively equipped with two salient points on the described two arc clip internal faces, and described salient point is to be equidistant annular array.

3, the contact terminal of telecommunications distributor joint according to claim 1, it is characterized in that: on the internal face of an arc clip of described hollow round tubular body, be provided with a salient point, and be provided with two salient points on the internal face of its another arc clip, and described salient point is to be equidistant annular array.