Test carrier

Abstract

The utility model discloses a test carrier which comprises a first fixing sheet, a second fixing sheet, a third fixing sheet, a fourth fixing sheet and a plurality of clamping assemblies, and the first fixing sheet, the second fixing sheet, the third fixing sheet and the fourth fixing sheet are fixedly connected in sequence from top to bottom through welding. The multiple clamping assemblies are arranged on the second fixing piece in an array mode and fixedly connected with the second fixing piece. First through holes are formed in the first fixing piece in an array mode, and second through holes are formed in the second fixing piece in an array mode. The clamping assembly comprises an upper clamping piece and a lower clamping piece, the upper clamping piece and the lower clamping piece are located in the second through hole and used for clamping the tested device, and the upper clamping piece and the lower clamping piece are both fixedly connected with the second fixing piece; according to the utility model, a tested device is pushed to a fixed position to fix a chip from two directions through the upper clamping element and the lower clamping element, so that the pin of the device can be accurately positioned by a probe during pressure testing, the detection accuracy is ensured, the structure is simple, and the processing difficulty coefficient is low.

Description

Technical Field

[0001] The utility model relates to the field of testing, in particular to a testing vehicle. Background Art

[0002] Nowadays, pressure sensors are widely used. As long as there is a GPS function and electronic equipment with altitude detection, such sensors are needed. Moreover, some mid-to-high-end pressure sensor tests are all conducted in high and low temperature environments and high pressure environments. The only way to conduct high, low temperature and high pressure tests is to use a carrier to carry the device under test, enter a closed high, low temperature and high pressure space, and perform electrical performance tests through pressure testing. Therefore, the carrier has become an important link that cannot be ignored. The commonly used ones now are TRAY trays, which are large in size and take up space. The test efficiency is 1 / 3 slower than that of stainless steel test carriers. The existing stainless steel test carriers have a high processing difficulty coefficient, and the requirements for materials, processing difficulty, and welding flatness are very stringent. Therefore, it is urgent to design a component test carrier for pressure sensor testing with a simple structure, low processing difficulty coefficient, and a new structure clamping component. Utility Model Content

[0003] The purpose of the utility model is to provide a test vehicle to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a test carrier, comprising a first fixing plate, a second fixing plate, a third fixing plate, a fourth fixing plate and a plurality of clamping components, wherein the first fixing plate, the second fixing plate, the third fixing plate and the fourth fixing plate are fixedly connected in sequence from top to bottom, and the plurality of clamping components are arranged in an array on the second fixing plate and fixedly connected to the second fixing plate;

[0006] The first fixing plate is provided with an array of first through holes, and the second fixing plate is provided with an array of second through holes corresponding to the positions of the first through holes;

[0007] The clamping assembly includes an upper clamping member and a lower clamping member, wherein the upper clamping member and the lower clamping member are located in the second through hole and are used to clamp the device under test, and the upper clamping member and the lower clamping member are both fixedly connected to the second fixing plate.

[0008] By adopting the above technical scheme, the technical effects produced include at least: the utility model pushes the tested device to a fixed position from two directions through the upper clamping piece and the lower clamping piece to fix the chip, so that the probe can accurately position the device pin during pressure testing, thereby ensuring the accuracy of the detection.

[0009] Preferably, the first through hole includes a first transverse through hole, a first vertical through hole and a first placement hole.

[0010] Preferably, the upper clamping member includes a first connecting portion, a first adjusting portion, and a first clamping portion. The first connecting portion, the first adjusting portion, and the first clamping portion are located in the second through hole. The first connecting portion is also fixedly connected to the second fixing plate. The first adjusting portion is located at the first vertical through hole position, and the first clamping portion is located at the first placement hole position.

[0011] Preferably, the lower clamping member includes a second connecting portion, a second adjusting portion, and a second clamping portion. The second connecting portion, the second adjusting portion, and the second clamping portion are located in the second through hole. The second connecting portion is also fixedly connected to the second fixing plate. The second adjusting portion is located at the first transverse through hole position, and the second clamping portion is located at the first placement hole position.

[0012] By adopting the above technical scheme, the technical effects produced include at least: only one end of the first connecting part and one end of the second connecting part are fixedly connected to the second fixing plate, and the first adjusting part, the first clamping part, the second adjusting part, the second clamping part and the second fixing plate have no connection relationship, so that when the first adjusting part and the second adjusting part are moved by the probe, the upper clamping part and the lower clamping part can drive the first clamping part and the second clamping part to change their positions in the second through hole, and the probe can be removed and reset.

[0013] Preferably, the first adjusting portion is arranged in a transverse direction, and the second adjusting portion is arranged in a vertical direction.

[0014] The technical effects produced by adopting the above technical solution include at least: facilitating the operation of the upper clamping member and the lower clamping member as a whole.

[0015] Preferably, the third fixing plate is provided with third through holes in an array, and the third through holes include a first avoidance hole and a second avoidance hole.

[0016] By adopting the above technical scheme, the technical effects produced include at least: setting the first avoidance hole and the second avoidance hole to avoid the range of movement of the upper clamping member and the lower clamping member, avoiding contact and friction with the third fixing plate when they move, causing damage and reducing losses.

[0017] Preferably, the fourth fixing plate is provided with fourth through holes in an array, and the fourth through holes include second transverse through holes and second vertical through holes.

[0018] The technical effects produced by adopting the above technical solution include at least: the fourth fixing piece serves as the bottom for receiving the device under test, thereby ensuring the stability of the device under test.

[0019] Preferably, the first fixing plate, the second fixing plate, the third fixing plate and the fourth fixing plate are all stainless steel plates and are fixedly connected by welding in sequence from top to bottom.

[0020] The technical effects produced by adopting the above technical solution include at least: each fixing plate is made of stainless steel and is fixedly connected by welding, thereby ensuring the stability of the overall structure.

[0021] Preferably, the sum of the thickness of the first fixing plate, the thickness of the second fixing plate, and the thickness of the third fixing plate is the thickness of the cavity, and the thickness of the cavity is 0.5-1 mm greater than the thickness of the product to be measured.

[0022] By adopting the above technical solution, the technical effects produced include at least: the second fixing plate is thicker than other fixing plates, the second fixing plate exists as a part with increased thickness of the carrier cavity, and provides fixation and support for the clamping assembly.

[0023] Preferably, the hole corners of the first avoidance hole and the second avoidance hole are both rounded.

[0024] The technical effect produced by adopting the above technical solution at least includes: setting the avoidance hole as a positioning avoidance for the device under test.

[0025] Preferably, the two sides of the device under test that are not adjacent to the first placement hole are 1-1.5 mm away from the hole wall of the first placement hole.

[0026] By adopting the above technical scheme, the technical effects produced include at least: after the needle plate opens the spring card, the device can be better placed into the cavity through the suction nozzle, avoiding collision between the product and the carrier due to too small a gap, resulting in scratches on the product and failed placement of the product jumping out of the cavity.

[0027] Preferably, the corner where the first abutting portion contacts the device under test is a rounded corner, and the corner where the second abutting portion contacts the device under test is a rounded corner.

[0028] By adopting the above technical scheme, the technical effects produced include at least: the places on the first abutting part and the second abutting part that conflict with the device under test are set to rounded corners to prevent damage to the chip, increase the contact area with the chip, and fix the chip more stably, thereby ensuring the stability of the detection.

[0029] Compared with the prior art, the utility model has achieved the following beneficial technical effects:

[0030] 1. The clamping assembly provided by the utility model pushes the tested device to a fixed position from two directions through the upper clamping piece and the lower clamping piece to fix the chip, so that the probe can accurately position the device pin during pressure testing to ensure the accuracy of the test;

[0031] 2. The fourth fixing plate provided by the utility model provides a stable bottom support for the overall structure, ensuring the stability of the detection process;

[0032] 3. The clamping assembly provided by the utility model is arranged in the second through hole and has a certain distance from the surface of the second through hole. The positions of the upper clamping piece and the lower clamping piece can be elastically changed and reset, and is suitable for chips of various specifications;

[0033] The utility model provides a test carrier with simple structure, easy operation and simple processing, which is more conducive to realizing stable detection of the pressure sensor chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 It is a schematic diagram of the overall structure of the test vehicle in the utility model;

[0036] Figure 2 Bit Figure 1 The enlarged schematic diagram at A in the middle;

[0037] Figure 3 This is a schematic diagram of the structure of the first fixing plate in the utility model;

[0038] Figure 4 This is a schematic diagram of the structure of the second fixing plate in the utility model;

[0039] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0040] Figure 6 This is a schematic diagram of the structure of the third fixing plate in the utility model;

[0041] Figure 7 This is a schematic diagram of the structure of the fourth fixing plate in the utility model;

[0042] In the figure: 1 is the first fixing plate, 11 is the first transverse through hole, 12 is the first vertical through hole, 13 is the first placement hole, 2 is the second fixing plate, 21 is the second through hole, 3 is the third fixing plate, 31 is the first avoidance hole, 32 is the second avoidance hole, 4 is the fourth fixing plate, 41 is the second transverse through hole, 42 is the second vertical through hole, 5 is the clamping assembly, 51 is the upper clamping piece, 511 is the first connecting part, 512 is the first adjusting part, 513 is the first pressing part, 52 is the lower clamping piece, 521 is the second connecting part, 522 is the second adjusting part, 523 is the second pressing part, and 6 is the probe. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] The purpose of the utility model is to provide a method to solve the problems existing in the prior art.

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0046] Embodiment 1:

[0047] This embodiment provides a test vehicle, such as Figure 1-7 As shown, it includes a first fixing plate 1, a second fixing plate 2, a third fixing plate 3, a fourth fixing plate 4 and a plurality of clamping components 5, the first fixing plate 1, the second fixing plate 2, the third fixing plate 3 and the fourth fixing plate 4 are fixedly connected in sequence from top to bottom, and the plurality of clamping components 5 are arranged in an array on the second fixing plate 2 and are fixedly connected to the second fixing plate 2;

[0048] The first fixing plate 1 is provided with first through holes in an array, and the second fixing plate 2 is provided with second through holes 21 in an array corresponding to the positions of the first through holes;

[0049] The clamping assembly includes an upper clamping member 51 and a lower clamping member 52 . The upper clamping member 51 and the lower clamping member 52 are located in the second through hole 21 and are used to clamp the device under test. The upper clamping member 51 and the lower clamping member 52 are both fixedly connected to the second fixing plate 2 .

[0050] In this embodiment, the first through hole includes a first transverse through hole 11, a first vertical through hole 12 and a first placement hole 13;

[0051] In this embodiment, the upper clamping member 51 includes a first connecting portion 511, a first adjusting portion 512, and a first pressing portion 513. The first connecting portion 511, the first adjusting portion 512, and the first pressing portion 513 are located in the second through hole 21. One end of the first connecting portion 511, one end of the first adjusting portion 512, and one end of the first pressing portion 513 are fixedly connected. The other end of the first connecting portion 511 is fixedly connected to the second fixing plate 2. The first adjusting portion 512 is located at the first vertical through hole 12, and the first pressing portion 513 is located at the first placement hole position 13.

[0052] In this embodiment, the lower clamping member 52 includes a second connecting portion 521, a second adjusting portion 522, and a second clamping portion 523. The second connecting portion 521, the second adjusting portion 522, and the second clamping portion 523 are located in the second through hole 21. One end of the second connecting portion 521, one end of the second adjusting portion 522, and one end of the second clamping portion 523 are fixedly connected. The other end of the second connecting portion 521 is fixedly connected to the second fixing plate 2. The second adjusting portion 522 is located at the first transverse through hole 11, and the second clamping portion 523 is located at the first placement hole 13.

[0053] In this embodiment, the first adjusting portion 512 of the upper clamping member 51 is arranged horizontally, and the first clamping portion 513 forms an obtuse angle with the first adjusting portion 512; the second adjusting portion 522 of the lower clamping member 52 is arranged vertically, and the first clamping portion 523 and the second adjusting portion 522 are arranged perpendicular to each other, the first clamping portion 513 abuts against one of the two sides that are not connected to the device under test and the first placement through hole 13, and the second clamping portion 523 abuts against the other side.

[0054] In this embodiment, the second through hole 21 is of an irregular shape, which is consistent with the shape of the surface that can be swept by the overall movement trajectory of the upper clamping member 51 and the lower clamping member 52 .

[0055] In this embodiment, the third fixing plate 3 is provided with third through holes in an array, and the third through holes include a first avoidance hole 31 and a second avoidance hole 32 .

[0056] In this embodiment, fourth through holes are arranged in an array on the fourth fixing plate 4 , and the fourth through holes include second transverse through holes 41 and second vertical through holes 42 .

[0057] In this embodiment, the first transverse through hole 11, the second avoidance hole 32, and the second transverse through hole 41 have the same shape, the first vertical through hole 12 and the second vertical through hole 42 have the same shape, and the second avoidance hole 32 and the upper clamping member 51, the second connecting portion 521, and the second clamping portion 523 have the same surface shape swept by the overall motion trajectory.

[0058] In this embodiment, the first fixing plate 1 , the second fixing plate 2 , the third fixing plate 3 and the fourth fixing plate 4 are fixedly connected in sequence from top to bottom by welding.

[0059] In this embodiment, the first fixing plate 1 , the second fixing plate 2 , the third fixing plate 3 and the fourth fixing plate 4 are all made of stainless steel.

[0060] In this embodiment, when the product thickness is 0.75 mm, the first fixing sheet 1 is 0.2 mm thick, the second fixing sheet 2 is 0.4 mm thick, the third fixing sheet 3 is 0.2 mm thick, and the fourth fixing sheet 4 is 0.2 mm thick.

[0061] In another embodiment, when the product thickness is 0.6 mm, the thickness of the second fixing sheet 2 is 0.3 mm.

[0062] The sum of the thicknesses of the first fixing plate 1, the second fixing plate 2 and the third fixing plate 3 of the utility model is the thickness of the cavity, and the thickness of the cavity must be greater than the thickness of the device under test so that the device under test is completely submerged in the cavity.

[0063] In this embodiment, the first avoidance hole 31 and the second avoidance hole 32 have rounded corners.

[0064] In this embodiment, the two sides of the device under test that are not adjacent to the first placement hole 13 are 1.5 mm away from the hole wall of the first placement hole 13 .

[0065] In this embodiment, the corner where the first abutting portion 513 contacts the device under test is a rounded corner, and the corner where the second abutting portion 523 contacts the device under test is a rounded corner.

[0066] The utility model provides a test carrier, and its working principle is as follows: the device moves the carrier to a fixed position on the track through a gripper, the pressure plate on the track presses down to fix the test carrier, and the bottom needle plate is lifted, so that the probe 6 on the needle plate is inserted upward from the fourth fixing plate 4 into the carrier, and acts on the first adjustment part 512 and the second adjustment part 522 respectively, so that it moves longitudinally and transversely along the first vertical through hole 12 and the first transverse through hole 11 respectively, such as Figure 5 As shown, the first abutment portion 513 and the second abutment portion 523 are moved to the outside of the first chip placement hole 13, the clamping assembly of the test carrier is opened, and the robot puts the test device into the card slot of the carrier until the card slot is full. The bottom needle plate resets the upper clamping member 51 and the lower clamping member 52 longitudinally and laterally, and the clamping assembly in the test carrier is reset. The clamping assembly will push the device under test to a fixed position in two directions, and then clamp and fix the device under test. Finally, the test carrier will be pushed into a special clip and then enter the test machine for high, low temperature and high pressure testing.

[0067] The utility model uses specific examples to illustrate the principle and implementation of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A test vehicle, characterized in that: It comprises a first fixing plate, a second fixing plate, a third fixing plate, a fourth fixing plate and a plurality of clamping components, wherein the first fixing plate, the second fixing plate, the third fixing plate and the fourth fixing plate are fixedly connected in sequence from top to bottom, and the plurality of clamping components are arranged in an array on the second fixing plate and are fixedly connected to the second fixing plate; The first fixing plate is provided with a first through hole array, and the second fixing plate is provided with a second through hole array; The clamping assembly includes an upper clamping member and a lower clamping member, wherein the upper clamping member and the lower clamping member are located in the second through hole and are used to clamp the device under test, and the upper clamping member and the lower clamping member are both fixedly connected to the second fixing plate.

2. A test vehicle according to claim 1, characterized in that: The first through hole includes a first transverse through hole, a first vertical through hole and a first placement hole.

3. A test vehicle according to claim 2, characterized in that: The upper clamping member includes a first connecting portion, a first adjusting portion, and a first tightening portion. The first connecting portion, the first adjusting portion, and the first tightening portion are located in the second through hole. The first connecting portion is also fixedly connected to the second fixing plate. The first adjusting portion is located at the first vertical through hole position, and the first tightening portion is located at the first placement hole position.

4. A test vehicle according to claim 3, characterized in that: The lower clamping member includes a second connecting portion, a second adjusting portion, and a second pressing portion. The second connecting portion, the second adjusting portion, and the second pressing portion are located in the second through hole. The second connecting portion is also fixedly connected to the second fixing plate. The second adjusting portion is located at the first transverse through hole position, and the second pressing portion is located at the first placement hole position.

5. A test carrier according to claim 4, characterized in that: The first adjusting portion is arranged in a horizontal direction, and the second adjusting portion is arranged in a vertical direction.

6. A test carrier according to claim 1, characterized in that: The third fixing plate is provided with third through holes in an array, and the third through holes include a first avoidance hole and a second avoidance hole.

7. A test vehicle according to claim 1, characterized in that: The fourth fixing plate is provided with fourth through holes in an array, and the fourth through holes include second transverse through holes and second vertical through holes.

8. A test carrier according to claim 1, characterized in that: The sum of the thickness of the first fixing plate, the thickness of the second fixing plate, and the thickness of the third fixing plate is the thickness of the cavity, and the thickness of the cavity is 0.5-1 mm greater than the thickness of the product to be measured.

9. A test carrier according to claim 6, characterized in that: The hole corners of the first avoidance hole and the second avoidance hole are both rounded.

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