CN1607394A

CN1607394A - Universal open type testing clamp for circuit board

Info

Publication number: CN1607394A
Application number: CN 200310100278
Authority: CN
Inventors: 俞容; 何英; 张丽英; 程德建; 辛书林
Original assignee: No54 Inst Headquarters Of General Staff P L A
Current assignee: No54 Inst Headquarters Of General Staff P L A
Priority date: 2003-10-16
Filing date: 2003-10-16
Publication date: 2005-04-20
Anticipated expiration: 2023-10-16
Also published as: CN100385246C

Abstract

A common open CB test clamp can provide a combined test interface for CB with less than 124 channels and provides a comparison test interface for the same CB with less tan o62 channels, the test is realized by a digital I/O device controlled by computer and external instruments. The clamp is composed of two serial slide 62 channel standard double array sockets making up of a test interface, each channel of which is connected with that of 124 two in one socket on an insulation board as the test channel, when the plug of adoptive two-in-one socket is not plugged, the standard two array socket channel forms a channel with I/O, when it is plugged, the channels connected by the plug and the standard two array socket form a channel.

Description

General open circuit board test clamp

Affiliated technical field

General open circuit board test clamp of the present invention belongs to electronic equipment and detects the maintenance technique field, for circuit board automatic test and fault diagnosis provide means.

Background technology

At present, circuit board testing for different size in the electronic equipment, mainly be by carrying out specially for the special test anchor clamps of specific standard board design and test macro, its test structure form is single, the control mode complexity, need some expensive vector conversion equipments (as matrix switch) when particularly realizing the signal converting of test channel, test to circuit board does not have stronger, the lower-cost test platform of versatility, corresponding simple, the economical and practical versatility test fixture of control of yet not operating.Chinese patent 96244370.0 has provided a kind of electronic devices and components test fixture, and the scheme of this patent is not suitable for the circuit board testing of different size.

Summary of the invention

The objective of the invention is to propose a kind of general open circuit board test clamp, for different size, have the different excitation inputs and the circuit boards of response output signal that test platform is provided.

The technical scheme that realizes the general open circuit board test clamp of the present invention is: open three parallel hollow slots at the working plate middle part, 2 62 channel standard twin-string sockets are distinguished solid welding in the middle part of printed circuit board separately, the line that joins with the socket leg is arranged on the printed circuit board, the printed circuit board both sides are equipped with bolt respectively, two printed circuit boards after the assembling are placed below the working plate, make two standard twin-string socket tandems be arranged in the middle hollow slots of three hollow slots, the standard twin-string socket is exposed at above the working plate, the bolt of printed circuit board both sides is arranged in all the other two hollow slots, equipped pad of bolt and nut, clamp nut can make two printed circuit boards that the standard twin-string socket is housed be fixed on the working plate, the standard twin-string socket does not move, unscrew nut, two printed circuit boards can independently move, then the standard twin-string socket can move in its hollow slots thereupon, working plate bolt hollow slots outside table top is the setting-in insulcrete respectively, install with standard twin-string socket pin on the insulcrete and two select a socket one to one, the passage on the standard twin-string socket selects a socket to link to each other with the I/O path of test computer or the external path of test usefulness respectively by two; Select under plug (linking to each other with external path) the not insertion state of a socket adaptive two, this passage of test jack is communicated with (two functions of selecting a socket to have itself) with the I/O path, and can control the reading and writing operation of this passage this moment by the I/O path; Select under the plug insertion state of a socket adaptive two, this passage of test jack is communicated with external path, and can carry out the loading of the required pumping signal of any test to this passage this moment by external path, or carry out the test to any response signal.

The 124 lane testing interfaces that the general open circuit board test clamp of the present invention can provide 2 62 channel standard twin-string sockets to be combined on working plate; Can utilize general open circuit board test clamp of the present invention directly or through card extender to test for the interface channel less than the circuit board of 62 passages; Can use 2 62 channel standard twin-string sockets combinations for the interface channel greater than the circuit board of 62 passages, directly or by card extender test, connect needs with the circuit-under-test board test that satisfies different size.Therefore, the general open circuit board test clamp of the present invention is used to that the circuit board testing of different size provides open test environment in the electronic equipment, for circuit board automatic test and fault diagnosis provide means.Select a test access conversion regime by the combined removable standard twin-string socket of the tandem of the general open circuit board test clamp of the present invention and two, make test process can fully utilize the I/O path or external path applies excitation to circuit board, or test response, thereby can make full use of test resources such as various instrument and meters, the circuit board that different size model, different test signal require is carried out test, and then circuit board is keeped in repair testing.During test, not only can test the single circuit board below 124 passages, can also be to the test of comparing simultaneously of the same circuit board below 62 passages.The present invention can provide flexible, various test connected mode and opening, general test platform for circuit board testing, has simplified operation, has made things convenient for test, has reduced expense, sets up general-utility test platform approaches and methods is provided for making full use of test resource.

Description of drawings

The general open circuit board test clamp test platen synoptic diagram of Fig. 1;

Fig. 2 a channel standard twin-string socket, printed circuit board upward view;

Fig. 2 b channel standard twin-string socket, printed circuit board A-A are to sectional view;

Fig. 2 c channel standard twin-string socket, printed circuit board assembly front view;

The general open circuit board test clamp circuit theory diagrams of Fig. 3;

Embodiment

Below in conjunction with accompanying drawing and example the general open circuit board test clamp of the present invention is further specified.

The general open circuit board test clamp of the present invention (as shown in Figure 1) comprises working plate 1, opens three parallel hollow slots 2,3,4 at working plate 1 middle part; Two 62 channel standard twin-string socket 5a, 5b are distinguished solid welding in the middle part of printed circuit board 6a, 6b separately, have on printed circuit board 6a, the 6b with socket 5a, the corresponding line that joins of 5b leg and (see Fig. 2 a), the line of all leg all converges at bus 7, printed circuit board 6a, 6b both sides are equipped with clamping block 8 respectively for four jiaos, with screw clamping block 8 is fixed on printed circuit board 6a, the 6b, clamping block 8 has the screw that cooperates with bolt 9, equipped pad 10 (seeing Fig. 2 b) between clamping block 8 and the bolt 9; With the printed circuit board 6a after the assembling, 6b places below the working plate 1, make two socket 5a, the 5b tandem is arranged in hollow slots 2, socket 5a, 5b is exposed at above the working plate 1, use for circuit-under-test plate or card extender, bolt 9 is positioned at hollow slots 3 separately, in 4, thereby with printed circuit board 6a, 6b is installed on the working plate 1, and make socket 5a, 5b and printed circuit board 6a, 6b can be along hollow slots 2,3,4 slide, fastening bolt 9 can be with socket 5a, 5b and printed circuit board 6a, 6b is fastened on the working plate 1, unscrew bolt 9, socket 5a, 5b and printed circuit board 6a, 6b is removable; Hollow slots 3,4 outsides setting-in insulcrete arranged side by side 11a, the 11b of working plate 1, insulcrete 11a, 11b are fixed on the working plate 1 by rivet, what the last installation of insulcrete 11a, 11b quantity was identical with socket (5a), (5b) pin quantity at least two selects a socket (12), present embodiment has been installed 128 two and has been selected a socket 12, wherein 124 pins with 5a, 5b are corresponding one by one links to each other, other 4 standby; When adaptive two selected the plug of a socket 12 not insert, two selected the B end of a socket 12 to link to each other with the I/O path, and socket 5a, 5b are last to link to each other with this I/O path with its corresponding leg thereby make; When adaptive two selected the plug insertion of a socket, two selected the B end of a socket 12 to disconnect with the I/O path, and link to each other with external path, and socket 5a, 5b are last to link to each other with external path with its corresponding leg thereby make; Be that each two B terminals that select a socket 12 links to each other with the corresponding terminals of socket 5a, 5b by bus 7, for example, first two is selected the B1 terminals of a socket 12 to be connected with the B1 pin of socket 5a by bus 7, and second two is selected the B2 terminals of a socket 12 to be connected with the B2 pin of socket 5a by the bus 7 on the printed circuit board 6a Each two selects the I/O end of a socket 12 to be connected with the I/O passage of test computer by I/O bus 13, for example, first two is selected the I/O1 of a socket 12 to be connected with the I/O1 of test computer I/O bus 13, and second two is selected the I/O2 of a socket 12 to be connected with the I/O2 of test computer I/O bus 13 Each two selects the GND of a socket 12 to terminate to public ground GND (see figure 3); Identical between the structure between socket 5b and the printed board 6b and the mode of connection and socket 5a and the printed board 6a repeats no more.

From the above, each passage on socket 5a, 5b selects a socket 12 to link to each other with the I/O path of test computer or the outer signal path of test usefulness respectively by two; Select under not insertion of the plug state of a socket 12 adaptive two, corresponding passage is communicated with (two functions of selecting a socket to have itself) among test jack 5a, the 5b with the I/O path, and can carry out the reading and writing operation this moment by I/O; Select under the plug insertion state of a socket adaptive two, the path of test jack is communicated with external path, and can import required pumping signal to test jack this moment by external path, or the response signal of test jack output is tested.

General open circuit board test clamp platen 1 among the present invention uses sheet metal to make, and can adopt corrosion resistant plate, or copper alloy plate, or the aluminium alloy plate material; Insulcrete 11a, 11b adopt engineering plastics, or glass mat, or the polyfluortetraethylene plate material; Two select a socket 12 to be general part; Clamping block 8 and bolt 9 can adopt stainless steel, or aldary, or aluminum alloy materials.

Two 62 passage dual-in-line sockets also can be selected the socket of other specifications and models, as 56 passage sockets, 72 passage sockets, 100 passage sockets etc., roughly the same, repeat no more when concrete clamp structure and principle and use 62 passage sockets.

Claims

1. a general open circuit board test clamp includes working plate (1), it is characterized in that: open three parallel hollow slots (2), (3), (4) at working plate (1) middle part; With 2 62 channel standard twin-string sockets (5a), (5b) respectively solid welding at separately printed circuit board (6a), (6b) middle part, the line that joins with socket (5a), (5b) leg is arranged on printed circuit board (6a), (6b), all leg lines all converge at bus (7), and printed circuit board (6a), (6b) both sides are equipped with clamping block (8), bolt (9) respectively for four jiaos; Two printed circuit boards (6a) after the assembling, (6b) place below the working plate (1), and two sockets (5a), (5b) tandem are arranged in hollow slots (2), and the bolt (9) of printed circuit board (6a), (6b) is arranged in hollow slots (3), (4) separately; The hollow slots (3) of working plate (1), (4) outside be setting-in insulcrete (11a), (11b) respectively, insulcrete (11a), (11b) go up install quantity identical with socket (5a), (5b) pin quantity at least two select a socket (12), each two (B) terminals that select a socket (12) is connected with socket (5a), (5b) corresponding terminals by bus (7), each two (I/O) terminals that select a socket (12) is connected with the I/O passage of test computer by I/O bus (13), and each two selects (GND) terminals of a socket (12) to receive publicly.

2. according to the general open circuit board test clamp of claim described 1, it is characterized in that: described standard twin-string socket (5a), (5b) or be 56 passages, or 72 passages, or 100 passages.