Test piece embedded with straight-head-shaped tungsten alloy

Abstract

The utility model provides a test piece embedded with a straight-head-shaped tungsten alloy, which comprises a fixing plate, a plurality of fixing holes are arranged in the fixing plate, a plurality of mounting grooves are arranged in the fixing plate, and test pieces are arranged in the mounting grooves. According to the test piece embedded with the straight-head-shaped tungsten alloy, the test head is made of the tungsten alloy material, and the test piece is made of the beryllium copper material, so that the test piece has extremely high hardness due to the fact that the test piece is made of the tungsten alloy material on the basis of keeping elasticity; the tungsten alloy can bear repeated mechanical friction, abrasion is remarkably reduced in high-frequency testing equipment, the service life of the tungsten alloy is prolonged, meanwhile, the tungsten alloy has excellent high-temperature resistance, stable mechanical strength and contact performance can be kept in a high-temperature aging test, and the service life of the tungsten alloy is prolonged. And the tungsten steel is excellent in performance in a high-humidity, high-pressure or corrosive environment due to the corrosion resistance and oxidation resistance of the tungsten steel.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of test piece, especially embed a test piece of straight head shape tungsten alloy. BACKGROUND

[0002] Traditional planar test piece refers to a kind of elastic metal contact device, is widely used in electronic component test, aging test and production verification.It appears from the demand of efficient, reliable, repeatable electrical connection, especially in chip and circuit board test, sheet contact finger because of its simple structure, excellent performance and flexibility, becomes the indispensable component in test fixture and equipment, is widely used in the field such as semiconductor test, PCB function test, automotive electronics, communication equipment and consumer electronics.

[0003] Traditional planar test piece gradually shows some technical deficiencies in more complex, more demanding test environment, ordinary sheet contact finger usually uses beryllium copper as material, although it has certain wear resistance, but in frequent test, its contact surface is easy to wear due to friction, leading to the decline of contact quality, ordinary sheet contact finger in long-term use or high pressure, its contact head can be reduced due to elastic fatigue or deformation, and contact point deformation can lead to poor contact, affect the stability and accuracy of signal transmission.

[0004] Therefore, it is necessary to provide a kind of test piece of inlaid straight head shape tungsten alloy to solve the above technical problems. CONTENT OF UTILITY MODEL

[0005] The utility model provides a kind of test piece of inlaid straight head shape tungsten alloy, solve the problem that test piece is prone to damage when traditional planar test piece is tested in more complex, more demanding test environment.

[0006] To solve the above technical problems, the utility model provides a kind of test piece of inlaid straight head shape tungsten alloy, comprising:

[0007] Fixed plate, the inside of the fixed plate is provided with a plurality of fixed holes;

[0008] A plurality of installation grooves, a plurality of the installation grooves are arranged in the inside of fixed plate, the inside of a plurality of the installation grooves is provided with test piece, the test piece is made of beryllium copper material;

[0009] A plurality of test heads, a plurality of the test heads are respectively arranged on the surface of a plurality of the test pieces, and the test head is made of tungsten alloy material.

[0010] Preferably, the bottom of a plurality of the test heads is respectively fixedly installed on one end of the top of a plurality of the test pieces.

[0011] Preferably, the inside of the fixed plate is slidably connected with two limiting plates, and the inside of each of the two limiting plates is provided with a pressing piece.

[0012] Preferably, the inside of the fixed plate is provided with a plurality of positioning grooves, and the inside of each of the plurality of positioning grooves is slidably connected with a positioning block.

[0013] Preferably, the inside of each of the plurality of positioning blocks is provided with a reset groove, the inside of each of the plurality of reset grooves is slidably connected with two reset blocks, and the inside of each of the plurality of reset grooves is provided with a reset spring.

[0014] Preferably, the inside of each of the plurality of reset grooves is provided with the reset spring.

[0015] Preferably, the inside of the fixed plate is provided with a plurality of moving grooves, and the two ends of each of the plurality of moving grooves are provided with limiting grooves, and the inside of each of the plurality of limiting grooves is slidably connected with a limiting block.

[0016] Compared with the related art, the test piece for embedding a straight head-shaped tungsten alloy has the following beneficial effects:

[0017] The utility model provides a kind of test piece for embedding straight head-shaped tungsten alloy, and test head is made of tungsten alloy material, while test piece is made of beryllium copper material, so that test piece keeps elasticity, and test head made of tungsten alloy material has extremely high hardness, so it can withstand repeated mechanical friction, significantly reduce wear in high-frequency test equipment, increase its service life, while tungsten alloy has excellent high-temperature resistance, can maintain stable mechanical strength and contact performance in high-temperature aging test, and the corrosion and oxidation resistance of tungsten steel itself makes it perform excellently in high humidity, high pressure or corrosive environment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic view of the first embodiment of the test piece for embedding straight head-shaped tungsten alloy provided by the utility model;

[0019] Figure 2 It is the structure schematic view of the first embodiment of the test piece for embedding straight head-shaped tungsten alloy provided by the utility model; Figure 1 It is the structure schematic view of the first embodiment of the test piece for embedding straight head-shaped tungsten alloy provided by the utility model;

[0020] Figure 3 It is the structure schematic view of the first embodiment of the test piece for embedding straight head-shaped tungsten alloy provided by the utility model; Figure 1 It is the structure schematic view of the first embodiment of the test piece for embedding straight head-shaped tungsten alloy provided by the utility model;

[0021] Figure 4 It is the structure schematic view of the second embodiment of the test piece for embedding straight head-shaped tungsten alloy provided by the utility model;

[0022] Figure 5 It is the structure schematic view of the second embodiment of the test piece for embedding straight head-shaped tungsten alloy provided by the utility model; Figure 4A structure diagram of the limiting plate shown in the figure;

[0023] Figure 6 For Figure 5 An enlarged schematic view of B shown in the figure.

[0024] Reference numerals in the figure: 1, fixed plate, 2, fixed hole, 3, mounting groove, 4, test piece, 5, test head, 6, limiting plate, 7, pressing piece, 8, positioning groove, 9, positioning block, 10, reset groove, 11, reset block, 12, reset spring, 13, moving groove, 14, limiting groove, 15, limiting block. DETAILED DESCRIPTION

[0025] The utility model will be further described below in combination with the drawings and embodiments.

[0026] First embodiment

[0027] Please refer to Figure 1 , Figure 2 and Figure 3 Among them, Figure 1 It is a structure schematic view of the first embodiment of the test piece of the embedded straight head shape tungsten alloy provided by the utility model; Figure 2 It is a structure schematic view of the fixed plate shown in the figure; Figure 1 It is an enlarged schematic view of A shown in the figure. A test piece of embedded straight head shape tungsten alloy comprises: Figure 3 Figure 1 A fixed plate 1, a plurality of fixed holes 2 are formed in the inside of the fixed plate 1;

[0028] A plurality of mounting grooves 3, a plurality of mounting grooves 3 are arranged in the inside of the fixed plate 1, and a plurality of test pieces 4 are arranged in the inside of a plurality of mounting grooves 3; the test piece 4 is made of beryllium copper material;

[0029] A plurality of test heads 5, a plurality of test heads 5 are arranged on the surface of a plurality of test pieces 4 respectively; the test head 5 is made of tungsten alloy material.

[0030] The bottom of a plurality of test heads 5 is fixedly installed at one end of the top of a plurality of test pieces 4 respectively.

[0031] The fixed plate 1 is composed of three pieces, and the three fixed plates 1 are stacked together, and the inside of two of the three fixed plates 1 is provided with a plurality of mounting grooves 3; after the test piece 4 is installed into the inside of the mounting groove 3, the three fixed plates 1 are stacked together, and the test piece 4 is fixed by limiting through the bolt.

[0032] The fixed plate 1 is composed of three pieces, and the three fixed plates 1 are stacked together, and the inside of two of the three fixed plates 1 is provided with a plurality of mounting grooves 3; after the test piece 4 is installed into the inside of the mounting groove 3, the three fixed plates 1 are stacked together, and the test piece 4 is fixed by limiting through the bolt.

[0033] ​The test head 5 is in a straight head shape, which is used for a large contact area, can provide uniform contact pressure, the large area contact can significantly reduce the contact resistance, ensures the stability of signal transmission, reduces signal reflection or loss, the straight head shape process is simple, the production cost is relatively low, and the batch production is suitable, reliable and stable contact, the contact surface shape and the contact area of the tungsten alloy head in the straight head shape are unchanged after repeated test friction loss, the contact position between the tungsten steel head and the pin is unchanged, and therefore more stable and reliable contact effect is brought.

[0034] The plurality of test heads 5 are connected with the test sheet 4 through welding, so that the low-resistance connection between the tungsten steel head and the test sheet body is ensured, and signal transmission loss is reduced.

[0035] The working principle of the test sheet embedded with the straight head shape tungsten alloy provided by the utility model is as follows:

[0036] In use, after the plurality of test sheets 4 are respectively installed in the plurality of installation grooves 3, the bolt pair is used to fix the fixed plate 1, a certain pressure is applied through the elastic deformation of the test sheet 4, the head of the test head 5 is in close contact with the conductive area of the test object, the head of the test head 5 forms a smooth and flat contact interface with the test object due to high hardness and precise machining, if the test object has an oxidation layer or pollution, then the edge of the head of the test head 5 can pierce the surface, and good electrical connection is ensured, after the connection is completed, the signal is transmitted from the test equipment to the head of the test head 5 through the test sheet body, and then a low-impedance electrical path is formed between the head of the test head 5 and the conductive area of the test object.

[0037] Compared with the related art, the test sheet embedded with the straight head shape tungsten alloy has the following beneficial effects:

[0038] The utility model provides a test sheet embedded with the straight head shape tungsten alloy, the test head 5 is made of tungsten alloy material, and the test sheet 4 is made of beryllium copper material, so that the test sheet 4 can maintain elasticity, the test head 5 made of tungsten alloy material has very high hardness, can withstand repeated mechanical friction, can significantly reduce wear in high-frequency test equipment, increase the service life, the tungsten alloy has excellent high-temperature resistance, can maintain stable mechanical strength and contact performance in high-temperature aging test, and the corrosion resistance and oxidation resistance of the tungsten steel make it perform excellently in high humidity, high pressure or corrosive environment.

[0039] Second embodiment

[0040] Please refer to Figure 4 , Figure 5 and Figure 6The first embodiment of the application provides a test piece of inlaid straight head-shaped tungsten alloy, and the second embodiment of the application provides another test piece of inlaid straight head-shaped tungsten alloy. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment.

[0041] Specifically, the test piece of inlaid straight head-shaped tungsten alloy provided by the second embodiment of the application is different from the test piece of inlaid straight head-shaped tungsten alloy provided by the first embodiment in that the inner part of the fixed plate 1 is slidably connected with two limiting plates 6, and the inner part of each of the two limiting plates 6 is provided with a pressing piece 7.

[0042] The inner part of one of the two limiting plates 6 is provided with a plurality of mounting grooves 3 for mounting the test piece 4.

[0043] The pressing piece 7 is a rubber pad, which is used to increase the friction between the limiting plate 6 and the test piece 4 when the limiting plate 6 limits the test piece 4, so as to increase the fixing effect.

[0044] The inner part of the fixed plate 1 is provided with a plurality of positioning grooves 8, and the inner part of each of the plurality of positioning grooves 8 is slidably connected with a positioning block 9.

[0045] One side of each of the plurality of positioning blocks 9 is fixedly connected to the two ends of the two limiting plates 6, which is used to position the two limiting plates 6 when the two limiting plates 6 are mounted.

[0046] The inner part of each of the plurality of positioning blocks 9 is provided with a reset groove 10, the inner part of each of the plurality of reset grooves 10 is slidably connected with two reset blocks 11, and the inner part of each of the plurality of reset grooves 10 is provided with a reset spring 12.

[0047] The reset spring 12 is arranged between the two reset blocks 11 and in the inner part of the reset groove 10.

[0048] The inner part of each of the plurality of reset blocks 11 is provided with a clamping hole, which is used to facilitate the movement of the reset block 11.

[0049] The inner part of the fixed plate 1 is provided with a plurality of moving grooves 13, and the two ends of each of the plurality of moving grooves 13 are provided with a limiting groove 14, and the inner part of each of the plurality of limiting grooves 14 is slidably connected with a limiting block 15.

[0050] Multiple limiting grooves 14 are all concealed grooves and are all opened inside the fixed plate 1. Multiple limiting blocks 15 are all L-shaped blocks. One end of each limiting block 15 is fixedly connected to one side of each reset block 11, and the other end of each limiting block 15 is slidably connected to the inside of each moving groove 13 and is slidably connected to the inside of each limiting groove 14. This is used to limit the multiple positioning blocks 9 after each limiting block 15 moves to one side inside the multiple moving grooves 13 and enters the inside of the multiple limiting grooves 14.

[0051] The working principle of the test piece with an inlaid straight-head tungsten alloy shape provided by this utility model is as follows:

[0052] When the test piece 4 needs to be replaced, the four reset blocks 11 are moved towards the center inside the two reset slots 10, while the two reset springs 12 are squeezed. When the multiple reset blocks 11 move to one side, the multiple limit blocks 15 move to one side inside the multiple limit slots 14. After the movement and separation, the four reset blocks 11 are moved upward, which causes the two positioning blocks 9 to move upward inside the two positioning slots 8. After the movement and separation, the multiple limit blocks 15 separate from the two moving slots 13, and the limit plate 6 can be removed. After the test piece 4 is removed and replaced, the limit plate 6 can be removed.

[0053] After the two positioning blocks 9 at both ends of the limiting plate 6 are inserted into the two positioning slots 8 respectively, and the multiple reset blocks 11 are released, the two reset springs 12 push the multiple reset blocks 11 to move to one side in the two reset slots 10 respectively, thereby driving the multiple limiting blocks 15 to enter the multiple limiting slots 14 respectively.

[0054] Compared with related technologies, the test piece with an inlaid straight-head tungsten alloy shape provided by this utility model has the following beneficial effects:

[0055] This utility model provides a test piece with an inlaid straight-head tungsten alloy shape. The moving groove 13, in conjunction with the limiting groove 14, limiting block 15, reset groove 10, reset block 11, reset spring 12, positioning groove 8 and positioning block 9, facilitates the installation and removal of the limiting plate 6, thereby facilitating the subsequent replacement of the test piece 4.

[0056] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A test piece of inlaid straight head shaped tungsten alloy, characterized by, Include: The inside of the fixed plate is provided with a plurality of fixing holes; A plurality of installation grooves are arranged in the inside of the fixed plate, and a test piece made of beryllium copper is arranged in the inside of each installation groove; A plurality of test heads are arranged on the surface of the test piece, and the test head is made of tungsten alloy material.

2. A test piece of inlaid straight head shaped tungsten alloy according to claim 1, characterized in that, The bottom of the test head is fixedly installed on one end of the top of the test piece.

3. A test piece of inlaid straight head shaped tungsten alloy according to claim 1, wherein The inside of the fixed plate is slidably connected with two limiting plates, and the inside of each limiting plate is provided with a pressing piece.

4. A test piece of inlaid straight head shaped tungsten alloy according to claim 3, wherein The inside of the fixed plate is provided with a plurality of positioning grooves, and the inside of each positioning groove is slidably connected with a positioning block.

5. A test piece of a mosaic straight head shape tungsten alloy according to claim 4, wherein The inside of each positioning block is provided with a reset slot, and the inside of each reset slot is slidably connected with two reset blocks, and the inside of each reset slot is provided with a reset spring.

6. A test piece of a mosaic straight head shape tungsten alloy according to claim 5, wherein The reset spring is arranged between the two reset blocks and in the reset slot.

7. A test piece of a mosaic straight head shape tungsten alloy according to claim 3, wherein The inside of the fixed plate is provided with a plurality of moving grooves, and the two ends of each moving groove are provided with a limiting groove, and the inside of each limiting groove is slidably connected with a limiting block.

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