WO2010031221A1

WO2010031221A1 - Cable testing device

Info

Publication number: WO2010031221A1
Application number: PCT/CN2008/072432
Authority: WO
Inventors: 沈奶连; 江斌; 刘杰; 涂建坤; 依晓春; 李春锋
Original assignee: 上海电缆研究所; 上海赛克力光电缆有限责任公司
Priority date: 2008-09-18
Filing date: 2008-09-19
Publication date: 2010-03-25
Also published as: CH702286B1; CN101676732A; CN101676732B

Abstract

A cable testing device includes a board and a jig (3) which is comprised of a base (325) and a cover (324) pivoted to the base. A locking device (322) is set between the base (325) and the cover (324). A contact (38) is set on the base (325), and a pressing post (323) is set on the cover (324) at the position corresponding to the contact (38).

Description

Cable test device

The present invention relates to a clamp apparatus for testing cable performance parameters, and more particularly to a high frequency wiring board that can be used for high frequency testing. Background technique

The wiring device used for cable testing determines the test conditions of the cable according to the structure of the fixture itself. The higher the test frequency, the shorter the cable stripping length must be, which puts higher requirements on the structure and shielding effect of the entire wiring device.

The Chinese utility model patent with the bulletin number CN2709992Y relates to such a cable test platform. It is wired by crimping. The utility model comprises a test body mounted on the base, and a cavity connected to the base line in the test body, the cavity body comprises a wiring clamp, a circuit board connecting the test lines in the base, and a shielding material. Wherein, the circuit board is disposed under the cavity, the wiring fixture is on the upper surface of the circuit board, and the button and the connector are further disposed on the fixture. The cable is passed from the outside to the clamp and the circuit board. The clamp is pressed down by the button, the contact spring in the connector is opened, the cable pair extends into the wiring hole, and after the button is released, the spring is closed, so that the connector is reliably clamped. Wiring is achieved by attaching the cable pair to the board. After the test is complete, simply press the button again to pull the line pair out. Very convenient to use. There may be a plurality of wiring jigs arranged in a fan shape. A plurality of pairs of such a cable can be sequentially inserted into the cavity, and connected to the test line through a wire jig in the cavity. The shielding material in the cavity and the cavity serves as a shielding.

From this point of view, this test platform has the advantages of quick connection and disassembly of the wire pair, and also has a certain shielding effect. Meets the needs of most cable testing. However, since the clamp is fixed by inserting the wire pair into the cavity (the cable stripping length is about 40 mm), the clamping is completed only when the pair of strands enters the cavity. If the space left between the clamps to be inserted into the cable is too small, it is very likely that the first pair will be operated. When the other pairs are operated, they need to be bent before they can be operated smoothly, which is easy to cause the pair structure. Changes (such as changes in the shield, etc.), thus affecting high frequency testing. Since this is determined by the structure of the fixture itself, it is difficult to further adjust the structure of the entire test platform to shorten the length of the stripping to accommodate higher frequency testing and shielding requirements. Summary of the invention

The technical problem to be solved by the present invention is to provide a wiring board capable of high frequency testing to meet the drawbacks of the prior art which can only be tested for lower frequency cables.

In order to solve the above technical problems, the present invention adopts the following technical solutions: A high frequency wiring board comprising a disk body and a first clamp, the first clamp comprising a first base, and a cover plate pivotally connected to the first base, wherein the first base and the cover plate are provided with a lock The fastening mechanism is provided with a contact on the first base, and the cover plate is provided with a pressing column at a position corresponding to the contact.

Preferably, the first base comprises a first groove, and the contact is disposed in the first groove, and the pressing column on the cover plate can be embedded in the first groove.

Preferably, the first base and the cover are pivotally connected at respective ends, and the first groove is disposed at a beginning end of the first base. Preferably, the end of the first base is further provided with a spring and a steel ball, and the steel ball presses the spring and is in contact with the cover plate. Further, the disk body of the high frequency wiring board is provided with a second groove, and the first jig is embedded in the second groove. Preferably, the first clip has a plurality of, and is evenly distributed on the disk body of the high frequency wiring board in the circumferential direction.

Preferably, the center of the disc body of the high frequency wiring board is provided with a through counterbore.

Further, the high frequency wiring board further includes a first pin that cooperates with the counterbore, and the first pin is provided with a first wire slot communicating with the first groove.

Further, the high frequency wiring board further includes a second plug engaged with the counterbore, the second plug is provided with a second wire slot communicating with the first groove, and the center is provided with a through hole.

Further, the high frequency wiring board further includes a second clamp that clamps the cable in a vertical direction.

The invention realizes the wiring by the matching arrangement of the pressing column and the contact: the first groove is provided with the contact, the cable pair enters the first groove, the first clamp is closed, and the pressing column can press the wire pair against the contact On, to achieve the connection, the locking mechanism ensures good contact between the pair and the contacts.

Since the first clamp is a clamshell clamp, after the cover is opened, sufficient space is reserved for the cable to be connected. As long as each wire pair can be in contact with the contact, the cover can be closed. Compared with prior art plug-in jigs, such jigs can greatly shorten the stripping length, preferably, the arrangement of the first jig in the circumferential direction, and the design of the first groove at the front end of the first jig can be more effective. Shorten the cable stripping length. Therefore, the present invention can be used for high frequency testing.

In addition, the present invention fully considers the shielding effect: the embedded engagement of the pressing column and the first groove; the entire first jig is embedded in the second groove of the high frequency terminal; and the central counterbore and the first and second pins With the cooperation, it can guarantee effective shielding. DRAWINGS

1 is a schematic structural view of a high frequency wiring board according to the present invention.

2 is a schematic structural view of a first jig and a first groove in the high frequency wiring board.

Figure 3 is a cross-sectional view showing the cover plate connected to the first base at the end.

Figure 4 is a plan view of the high frequency wiring board after the second jig is removed. Fig. 5 is a schematic view showing the assembly of the high frequency wiring board and the first and second pins. Figure 6 is a schematic view showing the structure of the first plug.

Figure 7 is a schematic view showing the structure of the second plug.

among them,

31. Second base

32. First fixture

33. Second fixture

34. Second groove

35. Counterbore

36. First latch

37. Second latch

38. Contacts

321. First groove

322. Locking mechanism

323. Pressure column

324. Cover

325. First base

326. Spring

327. Steel beads

361. First wire guide

371. Second wire guide

372. Through hole

detailed description

See Figure 1-6. The high frequency wiring board according to the present invention comprises a second base 31. The second base 31 is provided with four second grooves 34 at equal intervals in the circumferential direction, and a first clamp 32 is embedded in each of the grooves. The first clamp 32 includes a first base 325 and a cover 324. The cover 324 is pivotally coupled to the first base 325 at respective ends, and the first base 325 is fixedly coupled to the second recess 34. A locking mechanism 322 is provided in the middle portion of the first base 325 and the cover 324. The cover 324 is turned down and closed with the first base 325, and the locking mechanism 322 can fasten the two. Preferably, a spring 326 and a steel ball 327 are provided at the end of the first base 325, and the steel ball 327 presses the spring 326 and comes into contact with the cover plate 324. This structure allows the cover 324 to be opened and positioned at any angle from 0° to 90° for easy wiring. The cover 324 may be slightly longer than the first base 325. The first end 325 is provided with a first recess 321 at the beginning of the first base 325, and the first recess 321 is provided with a contact 38, the contact 38 and the second base 31. The board or test signal line is connected. A pressing column 323 is disposed at a corresponding position of the cover plate 324. When the cover plate 324 and the first base 325 are closed, the pressing column 323 can be embedded in the first recess 321 . When the wire is coming in, due to the downward pressure of the pressing column 323 , the pair of wires can be connected to the contacts 38.

The invention uses a flip-type clamp wiring. The first recess 321 is provided with a contact 38. When the cable pair enters the first recess 321 and the first clamp 32 is closed, the pressing column 323 can press the pair on the contact 38 to realize the connection and lock. The tightening mechanism 322 ensures good contact of the pair with the contacts 38.

Since the first jig 32 is a clamshell type jig, after the cover plate is opened, sufficient space is reserved for the cable to be connected, and as long as each wire pair can be in contact with the contact, the cover plate 32 can be closed. Compared to prior art plug-in jigs, such jigs can greatly reduce stripping length while avoiding damage to the wire-pair structure. Preferably, the arrangement of the first jig 32 in the circumferential direction and the design of the first groove 321 at the front end of the first jig 32 can better shorten the cable stripping length.

In addition, the insertion of the pressing post 323 with the first recess 321 and the entire first clamp 32 are embedded in the second recess 34 of the high frequency wiring board, which can provide good shielding effect.

Preferably, the center of the high frequency terminal block is provided with a through counterbore 35, and correspondingly, a first pin 36 and a second pin 37 are respectively engaged therewith. The first latch 36 and the second latch 37 are almost identical in shape, and are provided with four first lead slots 361 (or second lead slots 371) corresponding to the four first clamps 32 (ie, simultaneously and the first recess) The groove 321 is correspondingly connected, and the only difference is that the center of the second pin 37 is further provided with a through hole 372. The two fittings are inserted into the counterbore 35 and fixed to the high frequency terminal block, and the function of the groove is to not only fix the wire pair but also shield the effect. The wire pairs can be perforated into the cable clamp from different directions according to the actual needs of the test. The first latch 36 is used in conjunction with the cable entering the test from the front side of the high frequency patch panel. The cable is vertically clamped by the second jig 33, and the pair begins to separate at the center of the high frequency patch, and sequentially enters the respective first wire groove 361 and the first groove 321 under the first jig 32. When the cable enters from the reverse direction, change the second plug The pin 37 can be inserted.

The high-frequency wiring board of the invention has short stripping length, can be less than 18mm, and has good shielding effect, and is more suitable for high-frequency testing. When testing, the same wiring harness is used in pairs, one end of the cable is connected to one high frequency wiring board, and the other end is connected to another high frequency wiring board.

Claims

Rights request

A high frequency wiring board comprising a disk body and a first clamp (32), characterized in that: the first clamp (32) comprises a first base (325), and a pivot with the first base (325) a connecting cover plate (324), a locking mechanism (322) is disposed between the first base (325) and the cover plate (324), and the first base (325) is provided with a contact (38), a cover plate (324) A pressure post (323) is provided at a position corresponding to the contact (38).

2. The high frequency wiring board according to claim 1, wherein the first base (325) comprises a first recess (321), and the contact (38) is disposed in the first recess (321) The pressing column (323) on the cover plate (324) can be embedded in the first groove

Within (321).

3. The high frequency wiring board according to claim 2, wherein: the first base (325) and the cover plate (324) are pivotally connected at respective ends, and the first groove (321) is disposed at The beginning of the first base (325).

4. The high frequency wiring board according to claim 3, wherein: the end of the first base (325) is further provided with a spring (326) and a steel ball (327), and the steel ball (327) presses the spring (326) and in contact with the cover (324).

The high frequency wiring board according to claim 4, wherein: the disk of the high frequency wiring board (3) is provided with a second recess (34), and the first clamp (32) is embedded In the second groove (34).

The high frequency wiring board according to claim 5, characterized in that: the first jig (32) has a plurality of, and is uniformly distributed on the disk body of the high frequency wiring board (3) in the circumferential direction.

The high frequency wiring board according to claim 6, characterized in that: the center of the disk body of the high frequency wiring board (3) is provided with a through hole (35).

8. The high frequency wiring board according to claim 7, wherein: the high frequency wiring board (3) further comprises a first pin (36) cooperating with the counterbore (35), the first pin (36) a first wire slot communicating with the first groove (321 ) is disposed thereon

(361).

9. The high frequency wiring board according to claim 7, wherein: the high frequency wiring board (3) further comprises a second pin (37) cooperating with the counterbore (35), the second pin (37) a second wire slot communicating with the first groove (321 ) is disposed thereon

(371), and a through hole (372) is provided in the center.

The high frequency wiring board according to claim 8, characterized in that the high frequency wiring board (3) further includes a second jig (33) for holding the cable in the vertical direction.