Signal leakage prevention mechanism for testing surface-mounted filter

Abstract

The utility model provides a signal leakage prevention mechanism for testing a surface-mounted filter. The signal leakage prevention mechanism comprises a first test board, a second test board, a probe and a signal leakage prevention assembly, the first test board and the second test board are arranged along the X axis, a plurality of probes are arranged on the inner sides of the first test board and the second test board along the Y axis, all the probes comprise input probes and output probes, and signal leakage prevention assemblies are arranged on the non-abutting sides of the input probes and the output probes. The non-abutting sides of the other probes are communicated with the test board at the corresponding positions. According to the utility model, through the arrangement of the structure, the signal leakage prevention assembly can carry out signal shielding on the connection parts of the input probe and the output probe and the corresponding cables, thereby reducing signal leakage of the high-frequency contact connection part, and ensuring the maximum effectiveness and correctness of product test indexes.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication technical field, concretely is a kind of test table paste type filter's anti-signal leakage mechanism. BACKGROUND

[0002] For the debugging test of table paste type frequency hopping filter, the traditional test method such as direct soldering is that the cable or wire of test instrument is directly welded on product pin pad, and is disassembled after debugging;There is also a thimble type, and the cable needle of connecting test instrument is welded with probe;When testing, the transmission signal frequency is too high (especially output, input), which causes the connection part exposed in air to inevitably leak signal, thereby causing the test index to be inaccurate or even completely unable to achieve the required test index. UTILITY MODEL CONTENT

[0003] The technical problem to be solved by the utility model is how to prevent signal leakage when testing table paste type filter.

[0004] The utility model solves the above technical problem by the following technical means:

[0005] A kind of test table paste type filter's anti-signal leakage mechanism, including first test plate (8), second test plate (9), probe (12), anti-signal leakage component (13);First test plate (8) and second test plate (9) are along X axis setting, and the inside of first test plate (8), second test plate (9) is along Y axis and is provided with a plurality of probes (12), including input probe (12') and output probe in all probes (12), and the non-abutment side of input probe (12') and output probe is provided with anti-signal leakage component (13), and the non-abutment side of the rest probe (12) is communicated with the test plate of corresponding position.

[0006] Beneficial effect: through the setting of first test plate, second test plate, probe, anti-signal leakage component;Each probe can tightly press all pins of table paste type filter, so that the two rows of pins of table paste type filter on both sides are in close contact with the probe of corresponding position, signal is conducted, the non-abutment side of input probe and output probe is fixed with the two cables of external test equipment through anti-signal leakage component, and the non-abutment side of input probe, output probe is connected with the needle outlet of two cables respectively, and the non-abutment side of the rest probe is communicated with the test plate of corresponding position, anti-signal leakage component can signal shielding for the connection of input probe, output probe and corresponding cable respectively, reduce the signal leakage of high-frequency contact connection part, so as to ensure the maximum effectiveness and correctness of product test index.

[0007] Further, each anti-signal-leakage component (13) comprises a connecting barrel (131) and a metal barrel (132), each connecting barrel (131) is hollow, each connecting barrel (131) is sleeved on the shaft of the input probe (12') and the output probe, and the metal barrel (132) is fixed to one end of each connecting barrel (131) close to the non-abutment side of the input probe (12') and the output probe.

[0008] Beneficial effects: By arranging the connecting barrel and the metal barrel, the connecting barrel is sleeved on the input probe and the output probe, and the metal barrel is fixed to the connecting barrel, the metal barrel wraps the connection between the input probe and the corresponding cable and the connection between the output probe and the corresponding cable, shields the signal of the high-frequency contact connection part, and reduces the signal leakage of the high-frequency contact connection part.

[0009] Further, the size of each metal barrel (132) is greater than the size of the non-abutment side of the input probe (12') and the output probe.

[0010] Beneficial effects: The size of the metal barrel is greater than the size of the non-abutment side of the input probe and the output probe, which can ensure that the metal barrel does not contact the connection between the input probe and the corresponding cable and the connection between the output probe and the corresponding cable, and prevents short circuit.

[0011] Further, the inner layer of the connecting barrel (131) is made of insulating material, and the outer layer of the connecting barrel (131) is made of metal material.

[0012] Beneficial effects: By arranging the material of the connecting barrel, the insulating material prevents the metal material from contacting the input probe and the output probe to cause short circuit, and the metal material can shield the signal to reduce signal leakage.

[0013] Further, the metal barrel (132) is made of copper.

[0014] Beneficial effects: By making the metal barrel of copper, the signal shielding effect of copper is better.

[0015] Further, the first test plate (8) is fixed with a first mounting plate (10) close to the second test plate (9), the first mounting plate (10) is made of insulating material, a plurality of probes (12) are sequentially and penetratively arranged on the first mounting plate (10) along the Y axis, and the connecting barrels (131) around the input probes (12') and / or the output probes are penetratively fixed on the first mounting plate (10).

[0016] Further, the second test plate (9) is fixed with a second mounting plate (11) close to the first test plate (8), the second mounting plate (11) is made of insulating material, a plurality of probes (12) are sequentially and penetratively arranged on the second mounting plate (11) along the Y axis, and the connecting barrels (131) around the input probes (12') and / or the output probes are penetratively fixed on the second mounting plate (11).

[0017] Beneficial effects: through the setting of the first mounting plate and the second mounting plate, two mounting plates with a row of holes punched respectively are used to accurately position the positions of the two rows of probes, so that the probes are uniformly stressed, and the service life of the probes is prolonged.

[0018] Further, the input probe (12') and the output probe are provided on the same side or are provided on two sides respectively.

[0019] Further, the first test plate (8) and the second test plate (9) are circuit boards.

[0020] Further, each probe (12) is a telescopic probe, and the abutting side of each telescopic probe is a telescopic part. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of a signal leakage prevention mechanism of a test table-pasted filter in the embodiment one of the utility model;

[0022] Figure 2 It is an assembly drawing of an input probe and a signal leakage prevention component in the signal leakage prevention mechanism of the test table-pasted filter in the embodiment one of the utility model;

[0023] Figure 3 It is an assembly process drawing of an input probe and a signal leakage prevention component in the signal leakage prevention mechanism of the test table-pasted filter in the embodiment one of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Embodiment one

[0026] As shown in Figure 1 , Figure 2 , the embodiment provides a signal leakage prevention mechanism of a test table-pasted filter, which comprises a first test plate 8, a second test plate 9, a first mounting plate 10, a second mounting plate 11, a probe 12 and a signal leakage prevention component 13.

[0027] As shown in Figure 1 , Figure 2 , Figure 3As shown, the first test plate 8 and the second test plate 9 are arranged along the X axis, the first test plate 8 is fixed with the first mounting plate 10 close to the side of the second test plate 9, and the second test plate 9 is fixed with the second mounting plate 11 close to the side of the first test plate 8; a plurality of probes 12 are fixed in sequence on the first mounting plate 10 along the Y axis, and a plurality of probes 12 are fixed in sequence on the second mounting plate 11 along the Y axis; two mounting plates with a row of holes punched are used to accurately position the positions of the two rows of probes 12, so that the probes 12 are uniformly stressed, and the service life of the probes 12 is prolonged; all the probes 12 include an input probe 12' and an output probe, the input probe 12' and the output probe can be arranged on the same side or on the two sides respectively, the non-abutting sides of the input probe 12' and the output probe are fixed with two cables of an external testing device through the signal leakage prevention assembly 13, and the non-abutting sides of the remaining probes 12 are welded with the test plates at corresponding positions, the probes 12 can tightly abut all the pins of the surface-mounted filter, so that the two rows of pins on the two sides of the surface-mounted filter are in close contact with the probes 12 at corresponding positions and signal conduction; the first test plate 8 and the second test plate 9 in the embodiment are circuit boards; the first mounting plate 10 and the second mounting plate 11 are made of insulating materials, and the first mounting plate 10 and the second mounting plate 11 in the embodiment are acrylic plates; the probes 12 in the embodiment are telescopic probes, and the abutting sides of the telescopic probes are telescopic parts;

[0028] As shown in Figure 2 , Figure 3 The signal leakage prevention assembly 13 includes a connecting barrel 131 and a metal barrel 132, the connecting barrel 131 is hollow, the inner layer of the connecting barrel 131 is made of insulating material, the outer layer of the connecting barrel 131 is made of metal material, the connecting barrel 131 is sleeved on the shaft of the input probe 12', the connecting barrel 131 is arranged through the mounting plate, and the outer layer of the connecting barrel 131 is welded and fixed with the mounting plate; the non-abutting side of the input probe 12' is connected with the needle outlet of the cable, the connection between the input probe 12' and the cable is wrapped and fixed by the metal barrel 132, the signal leakage of the high-frequency contact connection part is reduced, thereby ensuring the maximum effectiveness and correctness of the product test index, one end of the metal barrel 132 is welded and fixed with the cable sheath of the external testing device, the other end of the metal barrel 132 is welded and fixed with the outer layer of the connecting barrel 131, the outer surface gap is completely sealed by soldering, and the problem of signal leakage is completely solved; the metal barrel 132 does not contact the non-abutting side of the input probe 12' and the needle outlet of the cable, thereby preventing short circuit, the metal barrel 132 in the embodiment is made of copper, and the copper is preferably red copper; the connection mode between the output probe and the signal leakage prevention assembly 13 is consistent with the connection mode between the input probe 12' and the signal leakage prevention assembly 13.

[0029] In use, one row of probes 12 on the second mounting plate 11 is in contact with one row of pins on one side of the product to be tested, and one row of probes 12 on the first mounting plate 10 is in contact with one row of pins on the other side of the product to be tested; two cables of the external testing device are in communication with the input probe 12' and the output probe through the signal leakage prevention assembly 13, and the remaining probes 12 are in communication with the testing plate at the corresponding position through the solder pad for testing.

[0030] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A signal leakage preventing mechanism of a table-top filter, characterized by comprising: The first test plate (8), the second test plate (9), the probe (12), the signal leakage prevention assembly (13); The first test plate (8) and the second test plate (9) are arranged along the X axis, and the inner sides of the first test plate (8) and the second test plate (9) are each provided with a plurality of probes (12) along the Y axis, the plurality of probes (12) including input probes (12') and output probes, and the non- abutting sides of the input probes (12') and the output probes are each provided with a signal leakage prevention assembly (13), and the non- abutting sides of the remaining probes (12) are in communication with the test plate at the corresponding position.

2. The signal leakage prevention mechanism of a test table-mounted filter according to claim 1, characterized by: Each signal leakage prevention assembly (13) includes a connecting barrel (131) and a metal barrel (132), each connecting barrel (131) is hollow, each connecting barrel (131) is respectively sleeved on the shaft of the input probe (12') and the output probe, and each connecting barrel (131) is fixed with a metal barrel (132) at one end close to the non- abutting side of the input probe (12') and the output probe.

3. The signal leakage prevention mechanism of a test table-mounted filter according to claim 2, characterized by: The size of each metal barrel (132) is greater than the size of the non- abutting side of the input probe (12') and the output probe.

4. The signal leakage prevention mechanism of a test table-mounted filter according to claim 2, characterized by: The inner layer of the connecting barrel (131) is made of insulating material, and the outer layer of the connecting barrel (131) is made of metal material.

5. The signal leakage prevention mechanism of a test table-top filter according to claim 2, characterized in that: The metal barrel (132) is made of copper.

6. The signal leakage prevention mechanism of a test table-top filter according to claim 2, wherein: The first test plate (8) is fixed with a first mounting plate (10) close to the second test plate (9), the first mounting plate (10) is made of insulating material, a plurality of probes (12) are sequentially and penetratingly arranged on the first mounting plate (10) along the Y axis, and the connecting barrels (131) around the input probes (12') and / or the output probes are penetratingly fixed on the first mounting plate (10).

7. The signal leakage prevention mechanism of a test table-top filter according to claim 2, wherein: The second test plate (9) is fixed with a second mounting plate (11) close to the first test plate (8), the second mounting plate (11) is made of insulating material, a plurality of probes (12) are sequentially and penetratingly arranged on the second mounting plate (11) along the Y axis, and the connecting barrels (131) around the input probes (12') and / or the output probes are penetratingly fixed on the second mounting plate (11).

8. The signal leakage prevention mechanism of a test table-top filter according to claim 1, wherein: The input probes (12') and the output probes are arranged on the same side or arranged on two sides respectively.

9. The signal leakage prevention mechanism of a test table-top filter according to claim 1, wherein: The first test plate (8) and the second test plate (9) are each a circuit board.

10. The signal leakage prevention mechanism of a test table-top filter according to claim 1, wherein: Each probe (12) is a telescopic probe, and the abutting side of each telescopic probe is a telescopic part.

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