CN218647018U - Veneer test fixture - Google Patents

Abstract

The embodiment of the application provides a veneer test fixture, includes: support plate, splint and a plurality of pressure are detained. The carrier plate is provided with a test area; the clamping plate is arranged in the test area of the carrier plate and is detachably connected with the carrier plate; the plurality of pressing buckles are arranged on the carrier plate and distributed around the clamping plate; wherein, the pressing buckle is at least partially positioned on one side of the clamping plate back to the carrier plate and used for fixing the clamping plate. The embodiment of the application can avoid the damage of the upper die element and the support plate caused by the lack of the tested plate between the upper die and the support plate in the transportation and maintenance processes of the single plate test fixture, effectively prolong the service life of the fixture and reduce the cost.

Description

A single board test fixture

technical field

The present application relates to the technical field of single-board testing, in particular to a single-board testing fixture.

Background technique

The single-board test fixture is used for the functional test (Functional Test, FT) of the main board, and generally includes an upper mold and a carrier board. During the FT test of a single board, the board to be tested needs to be placed on the carrier board, the upper mold is pressed down, and it is fastened with the carrier board before testing. However, the surface of the carrier plate facing the upper mold is uneven, so during the transportation and maintenance process, the upper mold and the carrier plate are in a buckled state, and the direct buckling of the upper mold and the carrier plate will damage the probes and presses on the upper mold. rods, connectors and other components, resulting in damage to the upper mold components and the carrier board, resulting in irreparable losses.

Utility model content

The embodiment of this application proposes a single-board test fixture, which can avoid the damage of the carrier board components caused by the lack of the tested board between the upper mold and the carrier board during the transportation and maintenance of the single-board test fixture, and effectively improve the service life of the fixture. ,cut costs.

A single board test fixture is proposed, comprising: a carrier board with a region to be tested; a splint arranged on the region to be tested on the carrier board and detachably connected to the carrier board; a plurality of buckles arranged on the carrier board, And distributed around the splint; Wherein, the buckle is at least partly located on the side of the splint facing away from the carrier plate, for fixing the splint. The splint is detachably connected to the carrier board through a press buckle, and the press buckle is at least partially located on the side of the splint facing away from the carrier board to fix the splint. The veneer test fixture fixes the splint on the carrier in the non-test state. The splint forms a physical barrier between the upper mold and the carrier. board and damage components.

In a possible implementation, the buckle includes a rotating shaft and a pressing piece, the pressing piece is fixedly arranged on the rotating shaft, and the pressing piece is free to rotate with the rotating shaft, and the pressing piece is at least partly located on the side of the splint facing away from the carrier plate . The splint is fixed with a rotary press buckle, which has a simple structure and is easy to use. The splint can be quickly fixed without using other tools, saving time and effort.

In a possible implementation manner, the carrier plate has a through hole, the rotating shaft passes through the through hole and is movably connected with the carrier plate, and the rotating shaft rotates freely in the through hole. The rotary press buckle is detachably connected to the carrier plate through the rotary shaft, which is convenient for replacement and maintenance.

In a possible implementation manner, the buckle is slidably connected to the carrier board, and the buckle can slide onto the splint for fixing the splint. The splint is fixed by a sliding buckle, which has a simple structure and is easy to use, and the splint can be quickly fixed without using other tools, saving time and effort.

In a possible implementation manner, a plurality of press buckles are all arranged at the edge of the test area, and are located outside the edge of the splint. Wherein, the plurality of buckles are arranged symmetrically with respect to the center line of the carrier board. The buckle is arranged near the outer edge of the splint, and the buckle can rotate freely. The distance between the buckle and the splint should be smaller than the radius of rotation of the buckle, so that the buckle can be effectively pressed on the splint. The symmetrical setting of the buckle can balance the force on the splint in multiple directions, and the stability is better.

In a possible implementation manner, the carrier board includes a plurality of positioning posts, and the splint includes a plurality of positioning holes. When the splint is detachably connected to the carrier board, the plurality of positioning posts are inserted into the plurality of positioning holes, wherein the plurality of The positioning post has the same number as the plurality of positioning holes, and they are in one-to-one correspondence. The flexible connection method of matching the positioning column and the positioning hole can quickly position the splint to the area to be tested on the carrier plate without error, achieving precise alignment and high assembly efficiency.

In a possible implementation manner, the splint is an acrylic board. The splint made of acrylic material has moderate hardness and will not damage the upper mold and the components on the carrier.

In a possible implementation manner, both the splint and the carrier are rectangular in shape, and after the splint and the carrier are detachably connected, the outer contour of the splint does not exceed the outer contour of the carrier. The outline of the splint does not exceed the outline of the carrier plate to ensure that the splint is not easy to be bumped by external devices between the carrier plate and the upper mold, so it is not easy to be damaged.

In a possible implementation, after the splint is detachably connected to the carrier, the long side of the splint is parallel to the long side of the carrier. Since the splint and the carrier are rectangular, the long side of the splint is parallel to the long side of the carrier. The short sides of the splint are therefore also parallel to the short sides of the carrier plate. The projected area of the splint can be smaller than the projected area of the carrier, that is, the outer contour of the splint is within the outer contour of the carrier, which is convenient for transportation, and the splint is not easily damaged during transportation.

In a possible implementation manner, the surface of the splint is smooth and flat. When the flat and smooth splint surface is in contact with the upper mold and the components on the carrier, the sliding friction force is small, and the components are not easy to be damaged.

In a possible implementation manner, an upper mold is further included, and the upper mold is fastened with the carrier; wherein, the splint is located between the upper mold and the carrier. When the veneer test fixture is in the state of transportation or maintenance, before the upper mold and the carrier are fastened, the splint is placed between the upper mold and the carrier, so as to avoid component damage caused by the direct buckling of the upper mold and the carrier.

Description of drawings

FIG. 1 is a schematic diagram of the assembly structure of a single-board test fixture provided in the embodiment of the present application;

Fig. 2 is a schematic diagram of the assembly structure of a splint and carrier provided in the embodiment of the present application;

Fig. 3 is a schematic cross-sectional structure diagram of a press buckle provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

In the description of this application, the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", " The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limiting the application.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , can also be a contradictory connection or an integral connection; those skilled in the art can understand the specific meanings of the above terms in the present application according to specific circumstances.

FIG. 1 is a schematic diagram of an assembly structure of a test fixture for a single board 1 provided in an embodiment of the present application. Generally, the single board 1 test fixture is used to test the continuity, functional circuit performance and signal quality of the single board 1 circuit. The single board 1 test fixture can include the upper mold 3 and the carrier board 2, and the upper mold 3 and the carrier board 2 Butt joint assembly, the single board 1 is located between the upper mold 3 and the carrier board 2 during the test. In one example, the upper mold 3 and the carrier plate 2 are connected together through a rotating shaft, and the upper mold 3 can make a circular motion around the rotating shaft through the rotation of the rotating shaft, and the track of the upper mold 3 along the circular movement can be fastened to the carrier plate 2 It can also be separated from the carrier plate 2 along the track of circular motion.

The carrier board 2 includes a test surface, the test surface is the surface facing the upper mold 3 , the test surface includes a test area, and the test area is used to test the circuit continuity, circuit performance and signal quality of the single board 1 . The upper mold 3 includes various connector interfaces, probes for testing signal quality, and pressure rods for fixing the board 1, wherein the various connector interfaces are electrically connected to the connector interfaces on the board 1, and the circuit continuity can be tested And circuit performance, can also test the quality of the transmitted signal. The probes are in contact with various terminals on the single board 1 to form electrical connections, and are used to test the quality of signals transmitted by various terminals. It can be understood that the carrier board 2 also has a corresponding connector interface, and in the case that the single board 1 under test has an under-board connector, the connector interface on the carrier board 2 is connected to the connector interface of the single board 1 , forming an electrical connection.

In one example, both the upper mold 3 and the carrier board 2 may have various components such as probes, pressing rods and connectors, and various types of single boards 1 may be used for testing. When the test fixture tests the single board 1, the single board 1 is placed in the test area, and the connector interface and probes of the upper mold 3 are respectively connected to the corresponding interfaces or devices of the single board 1 to be tested, and then corresponding tests are performed. The single board 1 may be a PCB board with various functional circuits, including but not limited to communication, power conversion, signal processing and other functions. In the process of testing the veneer 1, the test veneer 1 is placed on the carrier 2, and then the upper mold 3 and the carrier 2 are fastened together, and the pressure rod is pressed against the veneer 1 to prevent the veneer 1 from occurring during the test. Displacement affects test results. Components such as probes and connectors are electrically connected to the single board 1 for testing.

When the single board 1 test fixture is in the non-test state, if the upper mold 3 and the carrier board 2 are fastened together, the components on the upper mold 3 and the carrier board 2 will bump together, resulting in damage to the upper mold 3 and the carrier board 2 components , resulting in irreparable losses.

As shown in FIG. 1 and FIG. 2 , FIG. 2 is a schematic diagram of an assembly structure of a splint 4 and a carrier plate 2 provided by an embodiment of the present application.

Based on this, the veneer 1 test fixture in the embodiment of the present application further includes a splint 4 . During transportation, a splint 4 can be placed between the upper mold 3 of the single board 1 test fixture and the carrier 2 to isolate the upper mold 3 and the devices on the carrier 2 to avoid damage caused by direct contact and collision between the devices. During the maintenance process, the components of the upper mold 3 can be disassembled under the condition that the upper mold 3 and the carrier plate 2 are fastened. Therefore, it is also necessary to place a splint 4 between the upper mold 3 and the carrier plate 2 during maintenance. The devices on the upper mold 3 and the carrier plate 2 are physically separated to avoid damage caused by direct contact and collision between the devices.

As shown in Figure 1 and Figure 2, when testing the single board 1 with the veneer 1 test fixture, the veneer 1 is first placed on the carrier 2, and then the upper mold 3 and the carrier 2 are fastened together. The mold 3 and the carrier board 2 are electrically connected to the single board 1. It can be understood that the upper mold 3 and the connector interface on the carrier board 2 are connected with the connector on the single board 1 to form a test circuit; wherein, the upper mold 3 1. Test the connection between the test components (such as probes, connectors, etc.) on the carrier board 2 and the components on the single board 1. After the test is completed, the upper mold 3 is separated from the carrier board 2, and the single board 1 is taken out. Put the splint 4 in the test area, fasten the upper mold 3 and the carrier 2, so that the splint 4 physically blocks the devices on the upper mold 3 and the carrier 2, and avoids damage caused by direct contact and collision between the devices.

As shown in Figure 2, the single-board test fixture can also include: a plurality of press buckles 5, the press buckles 5 are arranged around the test area of the carrier board 2, and the splint 4 is detachably connected with the carrier board 2; In this state, the splint 4 is installed on the carrier board 2 to replace the single board. When the upper mold and the carrier plate 2 are fastened, the splint 4 is set as a physical barrier between the upper mold and the carrier plate 2, so that the components of the upper mold will not touch the components on the carrier plate 2, so that the upper mold can be avoided. Components such as probes, pressure rods and connectors on the carrier board 2 are damaged.

In some embodiments, the carrier board 2 may have a plurality of through holes for mounting buckles.

The splint 4 and the carrier 2 can be fixed by a plurality of press buttons 5 , and the plurality of press buttons 5 can be fixedly arranged on the carrier 2 along the outer contour of the splint 4 . In some embodiments, multiple press buttons 5 are mounted on the carrier board 2 through multiple through holes; it should be noted that the number of multiple through holes may be equal to or greater than the number of press buttons 5 . When the number of multiple through holes is greater than the number of press buckles 5, one press buckle 5 can be detachably installed in the multiple through holes. In some embodiments, multiple press buckles 5 can also be installed on the carrier board in a bolt-fixed manner.

In some embodiments, the press buckles 5 can rotate freely in the through holes, and the multiple press buckles 5 correspond to the multiple through holes respectively and can rotate freely in the through holes, and the multiple press buckles 5 can rotate to the splint 4 On the upper surface of the clamping plate 4, pressure is applied to fix the clamping plate 4. Therefore, the splint 4 can be detachably connected to the carrier 2 through the press buckle 5 , and the press buckle 5 is at least partially located on the side of the splint 4 facing away from the carrier 2 and also fixes the splint 4 .

In some embodiments, the buckle can also be pushed instead of rotating. When the buckle is pushed toward the splint, the buckle 5 can move to the upper surface of the splint 4. At this time, the buckle 5 is on the upper surface of the splint 4. There is pressure on the surface, which can fix the splint 4 so that the splint 4 will not be displaced.

Fig. 3 is a schematic cross-sectional structure diagram of a press buckle provided by an embodiment of the present application. As shown in FIG. 3 , the buckle includes a rotating shaft 8 and an elastic pressing piece 9 , the elastic pressing piece 9 is fixed on the rotating shaft 8 , and the elastic pressing piece 9 can freely rotate on the rotating shaft 8 . The rotating shaft 8 is fixedly arranged on the carrier board, the elastic pressing piece 9 rotates on the splint along the circumferential direction of the rotating shaft 8, and the elastic pressing piece 9 exerts elastic pressure on the splint. A plurality of buckles are used to respectively apply elastic pressure to the splint, so that the splint can be fixed on the carrier plate.

In another possible embodiment, the pressing piece 9 is fixed together with the rotating shaft 8, and the rotating shaft 8 can freely rotate in the through hole on the carrier plate. Sheet 9 exerts pressure on the splint for securing the splint. A plurality of press buckles can be used to apply pressure to the splint respectively, so that the splint can be fixed on the carrier plate.

In some embodiments, the pressing piece 9 may be an elastic pressing piece. The pressing piece 9 has elasticity. When the pressing piece 9 is rotated onto the splint, the pressing piece 9 exerts elastic force on the splint, so that the splint is fixed more firmly.

In the embodiment of the present application, under the non-test state of the veneer test fixture, the splint 4 is fixed on the carrier plate 2, and the splint 4 forms a physical barrier between the upper mold and the carrier plate 2, and the upper mold and the carrier plate 2 are not buckled. The component will be damaged due to the lack of veneer between the upper mold and the carrier plate 2.

In a possible embodiment, a plurality of press buckles 5 may be arranged on the edge of the test area, and located outside the edge of the splint 4 . The press buckle 5 is arranged near the outer edge of the splint 4, and the distance between the press buckle 5 and the splint 4 should be smaller than the radius of rotation of the press buckle 5, so that the press buckle 5 can be effectively at least partially located on the side of the splint facing away from the carrier plate, that is, pressed on the On the splint 4.

A plurality of press buttons 5 can be arranged symmetrically with respect to the center line of the carrier board 2 . The symmetrical arrangement of the buckles 5 can make the splint 4 be balanced in multiple directions, and the stability is better. In addition, the plurality of press buttons 5 can also be arranged evenly or unevenly on the edge of the splint 4 , as long as they can fix the splint 4 .

The splint 4 can be made of acrylic material. The splint 4 made of acrylic material has moderate hardness and will not damage the components on the upper mold and the carrier plate 2 . In addition, the splint 4 can also be made of other materials, as long as it does not damage the components, which is not specifically limited in this application.

Both the splint 4 and the carrier 2 can be rectangular in shape, and after the splint 4 and the carrier 2 are detachably connected, the outer contour of the splint 4 does not exceed the outer contour of the carrier 2 . Since the splint and the carrier are rectangular, the long sides of the splint are parallel to the long sides of the carrier, so the short sides of the splint are also parallel to the short sides of the carrier. The projected area of the splint can be smaller than the projected area of the carrier, that is, the outer contour of the splint is within the outer contour of the carrier, which is convenient for transportation, and the splint is not easily damaged during transportation. In one example, the long side of the splint 4 is parallel to the long side of the carrier 2 , and the length of the long side of the splint 4 is smaller than the length of the long side of the carrier 2 . In addition, the surface of splint 4 needs to be smooth and flat. The surface of the clamping plate 4 is smooth and flat, which can prevent the elements on the upper mold or the carrier plate 2 from being damaged by the clamping plate 4 .

In a possible embodiment, a plurality of positioning columns 6 can also be set on the carrier plate 2; the arrangement of the positioning columns 6 on the carrier plate 2 can be set according to the actual situation, and the number of the positioning columns 6 can also be set according to the actual situation. Setup is required. There are positioning holes 7 corresponding to the position and quantity of the positioning columns 6 on the splint 4, wherein a plurality of positioning columns 6 can pass through a plurality of positioning holes 7 respectively, and the splint 4 and the carrier plate 2 are connected to a plurality of positioning holes 7 through a plurality of positioning holes 7. Column 6 is detachably connected. The shape of the positioning hole 7 corresponds to the cross-sectional shape of the positioning column 6, and it needs to be able to be sleeved on the positioning column 6. The positioning column 6 can be a cylinder or a square column. The corresponding positioning hole 7 can be a circle. Shaped hole, oblong hole or square hole, etc. In this embodiment, the positioning hole 7 on the splint 4 is set on the positioning column 6 on the carrier 2, so that the splint 4 is fixed at the preset position of the carrier 2, and the positions of the splint 4 and the carrier 2 are relatively fixed; The splint 4 and the carrier plate 2 will not be displaced relative to each other due to external forces during the transport of the fixture.

The number of multiple positioning holes 7 can also be greater than the number of positioning columns 6, but it is necessary to satisfy that multiple positioning columns 6 can pass through some positioning holes 7 in the multiple positioning holes 7, so that the splint 4 can be installed with the carrier plate 2 together.

The above is only a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person familiar with the technical field can easily conceive of changes or changes within the technical scope disclosed in this application Replacement should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (10)

1. A veneer test fixture, comprising:

a carrier plate having a test area;

the clamping plate is arranged in the test area of the carrier plate and is detachably connected with the carrier plate;

the pressing buckles are arranged on the carrier plate and distributed around the clamping plate; the pressing buckle is at least partially positioned on one side of the clamping plate, which is back to the carrier plate, and is used for fixing the clamping plate.

2. The veneer test fixture according to claim 1, wherein said press button comprises a rotating shaft and a pressing sheet, said pressing sheet is fixedly disposed on said rotating shaft, and said pressing sheet freely rotates along with said rotating shaft, and said pressing sheet is at least partially located on a side of said clamping plate facing away from said carrier plate.

3. The veneer test fixture of claim 2, wherein said carrier plate has a through hole, said rotation axis passes through said through hole and is movably connected with said carrier plate, and said rotation axis freely rotates in said through hole.

4. A veneer test fixture according to claim 1, wherein said press studs are slidably connected to said carrier plate, said press studs being slidable onto said clamping plate for securing said clamping plate.

5. The veneer test fixture of claim 1, wherein said plurality of press studs are disposed at an edge of said test area and outside an edge of said clamping plate, wherein said plurality of press studs are symmetrically disposed with respect to a center line of said carrier plate.

6. The veneer test fixture according to claim 1, wherein said carrier plate comprises a plurality of positioning posts, and said clamping plate comprises a plurality of positioning holes, and when said clamping plate is detachably connected to said carrier plate, said plurality of positioning posts are inserted into said plurality of positioning holes, wherein said plurality of positioning posts are the same in number as said plurality of positioning holes and correspond to said plurality of positioning holes one to one.

7. A veneer test jig according to any one of claims 1 to 6, wherein the clamping plates are acrylic plates.

8. A veneer test fixture according to claim 5, wherein after said clamping plate is detachably attached to said carrier plate, the long side of said clamping plate is parallel to the long side of said carrier plate.

9. A veneer test fixture according to any one of claims 1 to 6, wherein the surface of said clamping plate is smooth and even.

10. The veneer test fixture of any one of claims 1 to 6, further comprising an upper die, said upper die being snap-fitted with said carrier plate; wherein, splint are located go up the mould with between the support plate.

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