TWM464662U - Testing fixture for a printed circuit board - Google Patents

Abstract

A testing fixture for electrically connecting a circuit board to an external plug is disclosed. The testing fixture includes a first board, a second board, a transferring board and a resilient supporting component. An opening slot is formed on a surface of the second board. A first end of the transferring board is disposed on the first board. A second end of the transferring board opposite to the first end aligns with the opening slot on the second board. The resilient supporting component is disposed between the first board and the second board. The first board moves relative to the second board via the resilient supporting component, so that the second end of the transferring board can pass through the opening slot to move from a surface of the second board to the opposite surface of the second board.

Description

Board test fixture

This creation provides a board test fixture, especially a board test fixture that is not limited by the slot of the board to be tested, to improve test efficiency.

In the traditional circuit board function test program, the slot of the board to be tested is used as a mechanism for fixing the test board. The slot of the board to be tested usually has a locking mechanism, and the latching mechanism can abut one end of the test board when the test board is mounted to the slot to prevent the test board from coming off the slot. In order to perform a large number of rapid functional tests, the traditional test program generally combines and separates the test board and the test board by manual insertion or removal. However, the manual insertion and removal method will consume a large amount of physical strength of the operator for a long time, and it is easy to cause errors such as leakage or misalignment due to fatigue, which not only reduces the product yield but also increases the difficulty of debugging. Although the tool insertion and removal method can improve the execution speed of the test program, it still has to be manpowered and has no automation advantage. Therefore, how to design a test that can quickly install and separate the test board into the slot of the test board. The use of fixtures to make them highly automated to improve test efficiency and quality is one of the development goals of the design of the relevant test industry.

This creation provides a board test fixture that is not limited by the slot of the board to be tested to improve test efficiency to solve the above problems.

The patent application scope of the present invention discloses a board test fixture for electrically connecting a circuit board to an external slot. The board test fixture includes a first pressure plate, A second pressure plate, an adapter plate and an elastic support member. The surface of the second pressure plate forms a slot. The first end of the adapter plate is disposed on the first pressure plate, and the adapter plate is aligned with the second end of the first end to the slot of the second pressure plate. The elastic support member is disposed between the first pressure plate and the second pressure plate. The first pressure plate is moved relative to the second pressure plate by the elastic support member, so that the second end of the adapter plate can pass through the slot from one end surface of the second pressure plate to the other end surface of the second pressure plate. .

The scope of the patent application of the present invention further discloses that the adapter plate has a fixing hole. The card test fixture further includes a fixing member disposed on the first pressure plate. The fixing member penetrates the fixing hole to fix the adapter plate to the first pressure plate.

The scope of the patent application of the present invention further discloses that the first pressure plate comprises a first plate portion and a second plate portion. The first plate portion has a recessed structure. The fixing member is disposed in the recessed structure, and the second plate portion is attached to the first plate portion to limit the fixing member.

The scope of the patent application of the present invention further discloses that the adapter plate includes a first body and a second body. The second body is coupled to the first body, and a width of one of the first bodies is substantially greater than a width of one of the second bodies.

The scope of the patent application of the present invention further discloses that the width of the second body is substantially smaller than the pitch of the two cassettes of the external slot.

The scope of the patent application of the present invention further discloses that one of the second bodies has a height substantially greater than a height of the card.

The scope of the patent application of the present invention further discloses that the adapter plate includes a guiding slot disposed on the second body. The guide groove is formed at a position of the second body substantially corresponding to one of the outer slots.

The scope of the patent application of the present invention further discloses that the adapter plate includes a transition slot disposed in the first body.

The scope of the patent application of the present invention further discloses that the card test fixture further includes a driving mechanism for adjusting the relative distance between the first pressure plate and the second pressure plate.

The scope of the patent application of the present invention further discloses that the driving mechanism is disposed on the first pressure plate. The drive mechanism pushes the first pressure plate to compress the elastic support member to move the first pressure plate relative to the second pressure plate.

The scope of the patent application of the present invention further discloses that the driving mechanism is disposed in the first external slot. The driving mechanism pushes the outer slot to abut the second pressure plate, and the second pressure plate compresses the elastic support to move relative to the first pressure plate.

The scope of the patent application of the present invention further discloses that the elastic support member comprises a first connecting portion, a second connecting portion and an elastic member. The first connecting portion is disposed on the first pressure plate. The second connecting portion is disposed on the second pressure plate. The second connecting portion slidably connects the first connecting portion. The elastic element is disposed between the first connecting portion and the second connecting portion.

The patent application scope of the present invention further discloses that the first connecting portion is a receiving groove structure, and the second connecting portion is a rod portion. Two ends of the rod portion are respectively disposed on the receiving groove structure and the second pressure plate.

This creation partially cuts the side edges of the adapter plate so that the card does not interfere with the side structure of the adapter plate when the adapter plate is inserted into the external slot, so the adapter plate and the external slot are The combination and separation process does not need to provide the limit and release limit function through the cassette, so the adapter board can be quickly inserted and removed into the external slot along with the board test fixture. This creation does not use the cassette for the limit position. The board test fixture of the present invention uses the fixing member to pass through the fixing hole of the adapter plate and is disposed in the plate portion of the first pressure plate to securely mount the adapter plate in the first a pressure plate. In this way, the board test fixture can be pushed by the drive mechanism to accurately insert or unplug the adapter board into the external slot, and the adapter board is not limited by the external slot, thereby achieving full automation and rapid testing. the goal of. Compared with the prior art, the creation is simple in structure, easy to operate, and highly automated, and can automatically combine and separate the test circuit board and the circuit board to be tested, improving test efficiency to meet high quality. Design specifications.

10‧‧‧ board test fixture

12‧‧‧ boards

14‧‧‧Test board

16‧‧‧External slots

18‧‧‧First pressure plate

20‧‧‧Second platen

22‧‧‧Adapter plate

221‧‧‧ first end

223‧‧‧ second end

24‧‧‧elastic support

26‧‧‧Opening

28‧‧‧ slotting

30‧‧‧Fixed holes

32‧‧‧Fixed parts

34‧‧‧First Board

36‧‧‧Second Board

38‧‧‧ recessed structure

40‧‧‧Slot

42‧‧‧ first subject

44‧‧‧Second subject

441‧‧‧Connecting terminal

46‧‧‧Carmen

48‧‧‧ Guide slot

50‧‧ ‧ sales guide

52‧‧‧Transfer slot

54‧‧‧First connection

56‧‧‧Second connection

58‧‧‧Flexible components

60‧‧‧ drive mechanism

62‧‧‧First positioning element

64‧‧‧Second positioning element

W1‧‧‧Width

W2‧‧‧Width

W3‧‧‧ spacing

H1‧‧‧ Height

H2‧‧‧ Height

FIG. 1 is an exploded view of the components of the board test fixture of the present embodiment.

Figure 2 is a block diagram of the card test fixture of the present embodiment.

FIG. 3 is a schematic view of the adapter plate and the first pressure plate according to the embodiment of the present invention.

Figure 4 is a schematic view of the adapter plate of the present embodiment.

Figure 5 is a schematic view of the elastic support member of the present embodiment.

Fig. 6 and Fig. 7 are respectively schematic diagrams of the driving card test fixtures of different embodiments.

8 to 11 are schematic views of the board test fixture of the creation embodiment in different operation stages, respectively.

Please refer to FIG. 1 and FIG. 2 . FIG. 1 is an exploded view of a component of the card test fixture 10 of the present embodiment, and FIG. 2 is a block diagram of the card test fixture 10 of the present embodiment. The board test fixture 10 is used to enable the circuit board 12 to be electrically and quickly connected to the external slot 16 of the board 14 to be tested. The board test fixture 10 includes a first pressure plate 18, a second pressure plate 20, at least one adapter plate 22, and a plurality of elastic support members 24. The surface of the first pressure plate 18 forms a plurality of openings 26, and the surface of the second pressure plate 20 forms a plurality of slots 28, and the number of the openings 26 and the slots 28 may correspond to the number of the adapter plates 22. The first end 221 of each of the adapter plates 22 is fixed in the corresponding opening 26 of the first pressure plate 18, and the elastic support member 24 is disposed between the first pressure plate 18 and the second pressure plate 20 for each transfer. The second end 223 of the plate 22 opposite the first end 221 can be aligned with the slot 28 of the second platen 20.

The card test fixture 10 preferably includes four resilient support members 24 disposed at the four end angles of the first pressure plate 18 and the second pressure plate 20, respectively. The first pressure plate 18 can be utilized The elastic support member 24 is smoothly moved relative to the second pressure plate 20, or the second pressure plate 20 can be smoothly moved relative to the first pressure plate 18 by the elastic support member 24, thereby adjusting the distance between the first pressure plate 18 and the second pressure plate 20, so that the rotation The second end 223 of the web 22 can pass through the slot 28 from one end surface of the second pressure plate 20 to the other end surface of the second pressure plate 20, that is, the adapter plate 22 can be inserted into the bottom end of the second pressure plate 20 to be inserted. Corresponding external slots 16 are included. At this time, the circuit board 12 can be electrically connected to the interposer 22 by the first end 221 to perform the test of the board 14 to be tested. The characteristics of the circuit board 12 and the board to be tested 14 can be interchanged according to the use requirements. For example, the board to be tested 14 can be a reference component, and the circuit board 12 can be an object to be tested.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 . FIG. 3 is a schematic view of the adapter plate 22 and the first pressure plate 18 according to the embodiment of the present invention. The board test fixture 10 may further include at least one fixing member 32 for fixing the adapter plate 22 to the first pressure plate 18. The fixing member 32 can be a locking screw, a locking mechanism or a limiting rod. When the fixing member 32 is a limiting rod member, the adapter plate 22 can have at least one fixing hole 30, and the number of the fixing members 32 corresponds to the number of the fixing holes 30, for example, three of the fixing member 32 and the fixing hole 30. The first platen 18 can include a first plate portion 34 and a second plate portion 36. The first plate portion 34 can have a recessed structure 38. Each fixing member 32 is disposed through the corresponding fixing hole 30 of the adapter plate 22 and disposed in the recess structure 38, and then the second plate portion 36 is fitted to the first plate portion 34 to clamp the fixing member 32, thereby the adapter plate 22 is limited to the first pressure plate 18. The first plate portion 34 and the second plate portion 36 can respectively form a plurality of broken grooves 40 for allowing the circuit board 12 to pass through the first plate portion 34 and be coupled to one of the transfer plates 22 of the transfer plate 52. And allowing the adapter plate 22 to pass through the second plate portion 36 and point toward the slot 28 of the second platen 20.

Please refer to FIG. 1 , FIG. 2 and FIG. 4 , and FIG. 4 is a schematic view of the adapter plate 22 of the present embodiment. The adapter plate 22 can include a first body 42 and a second body 44. The second body 44 is coupled to the first body 42 and the width W1 of the first body 42 is substantially greater than the width W2 of the second body 44. The transfer groove 52 is provided at the upper end of the first body 42. Since the second body 44 is narrower than the first body 42, and the second body 44 has The smooth side structure, so that the structural width difference between the first body 42 and the second body 44 can avoid the fixing mechanism of the cassette 46 of the external slot 16, that is, when the adapter plate 22 is inserted into the external slot 16, the card is folded. 46 pairs of adapter plate 22 have no structural interference and do not have a fixed function. In addition, the adapter plate 22 can include a guiding slot 48 disposed beside the connecting terminal 441 of the second body 44. The connection terminal 441 is a conductive contact of the adapter plate 22, and performs signal exchange as a contact conduction point. The guide groove 48 is formed at the position of the second body 44 to substantially correspond to one of the guide pins 50 of the outer slot 16. When the adapter plate 22 is to be combined with the outer slot 16, the guide slot 48 can correctly guide the adapter plate 22 into the outer slot 16 by the pulling of the guide pin 50.

Please refer to FIG. 5, which is a schematic view of the elastic support member 24 of the present embodiment. The elastic support member 24 can include a first connecting portion 54, a second connecting portion 56, and a resilient member 58. The first connecting portion 54 and the second connecting portion 56 may be fixed to the first pressure plate 18 and the second pressure plate 20, respectively. The second connecting portion 56 is slidably coupled to the first connecting portion 54 , and the elastic member 58 is disposed between the first connecting portion 54 and the second connecting portion 56 . When the distance between the first pressure plate 18 and the second pressure plate 20 is reduced, the elastic member 58 is compressed to store an elastic restoring force; if the force is applied outside the first pressure plate 18 or the second pressure plate 20, the elasticity of the elastic member 58 is obtained. The restoring force can drive the second connecting portion 56 away from the first connecting portion 54 to separate the first pressure plate 18 and the second pressure plate 20 to return to the initial spacing. For example, the first connecting portion 54 can be a receiving groove structure, and the second connecting portion 56 can be a rod portion. One end of the rod portion is disposed on the second pressure plate 20, and the other end is slidably fitted into the accommodating groove structure. However, the structures of the first connecting portion 54 and the second connecting portion 56 are not limited thereto, and depending on design requirements.

Please refer to FIG. 6 and FIG. 7 . FIG. 6 and FIG. 7 are respectively schematic diagrams of the driving card test fixture 10 of different embodiments. The board test fixture 10 can further include a drive mechanism 60 that provides a lifting platform to regulate the relative distance between the first pressure plate 18 and the second pressure plate 20. As shown in FIG. 6, the drive mechanism 60 is selectively disposed on the first pressure plate 18. The first plate and the second plate 20 can be respectively disposed with a first positioning The component 62 and a second positioning component 64 are, for example, sized positioning posts and positioning holes. When the card test fixture 10 approaches the board 14 to be tested, the positioning members 62, 64 can assist the slot 28 of the second platen 20 to align with the outer slot 16, and then the drive mechanism 60 compresses the elastic support when the first platen 18 is pushed. The member 24 moves the first pressure plate 18 relative to the second pressure plate 20, and the adapter plate 22 can be accurately inserted into the outer slot 16 through the slot 28. In addition, a gap can be formed between the drive mechanism 60 and the first pressure plate 18 for the operator to load the circuit board 12 into the adapter slot 52 of the adapter plate 22.

On the other hand, as shown in Fig. 7, the drive mechanism 60 can also be selectively disposed in the outer slot 16 (or disposed on the board to be tested 14 to push the outer slot 16). The driving mechanism 60 pushes up the board 14 to be pressed to abut the second platen 20, and further presses the second platen 20 to compress the elastic support member 24, thereby shortening the first platen 18 and the second platen 20. Relative distance. At this time, part of the adapter plate 22 (the second end 223) is inserted into the external slot 16 through the slot 28 for the purpose of quickly and accurately engaging the adapter plate 22 with the external slot 16. It is worth mentioning that the drive mechanism 60 of the creation can be equipped with a manual, electric, pneumatic or vacuum power mechanism according to the use requirements, and the power mechanism capable of stably applying pressure to achieve a one-time quick insertion and removal function belongs to the present invention. The scope of design of the creation is therefore not described one by one.

Please refer to FIG. 1 and FIG. 8 to FIG. 11 . FIG. 8 to FIG. 11 are respectively schematic diagrams of the card test fixture 10 of the present embodiment in different operation stages. As shown in FIG. 8, the board test fixture 10 is located above the external slot 16, at which time the circuit board 12 is not yet coupled to the adapter board 22, and the adapter board 22 is not incorporated into the outer slot 16. As shown in FIG. 9, the circuit board 12 can be inserted into the transition slot 52 of the adapter plate 22 via the opening 26 of the first pressure plate 18, and the drive mechanism 60 is activated to drive the card test fixture 10 down to the outside. The slot 16, or drive mechanism 60, can additionally drive the board under test 14 up so that the outer slot 16 is adjacent to the lower platen 20 of the card test fixture 10. The lower pressing plate 20 utilizes the combination of the first positioning element 62 and the second positioning element 64 to align the slot 28 with the board to be tested 14 On the outer slot 16.

Next, as shown in Fig. 10, the lower platen 20 abuts against the outer slot 16. At this time, the elastic support member has not been compressed, and the second end 223 of the adapter plate 22 (that is, the lower end of the second body 44) is received in the slot 28 of the second pressure plate 20. If the driving mechanism 60 further strengthens the pressure to drive the card test fixture 10 to move down or drive the panel 14 to move up, the elastic support member 24 is compressed to reduce the relative distance between the first pressure plate 18 and the second pressure plate 20. As shown in FIG. 11, with the pressing of the driving mechanism 60, the distance between the first pressure plate 18 and the second pressure plate 20 is reduced by the elastic deformation of the elastic support member 24, so that the second end 223 of the adapter plate 22 can be The lower end of the slot 28 of the second pressure plate 20 is protruded and inserted into the external slot 16 to establish an electrical connection between the circuit board 12 and the board under test 14. In addition, if the adapter plate 22 and the external slot 16 are to be separated, the driving mechanism 60 can reversely drive the card test fixture 10 to move up or the board 14 to be tested to move down, and directly insert the adapter board 22 from the outside. The groove 16 is pulled out, and the elastic restoring force of the elastic support member 24 also synchronously drives the distance between the first pressure plate 18 and the second pressure plate 20 to return to the initial distance as shown in Fig. 8 or Fig. 9.

Referring to Figures 4 and 10 again, the adapter plate 22 can be a T-shaped structure. Because the width W2 of the second body 44 can be substantially smaller than the pitch W3 of the two ends of the outer slot 16, and the height H1 of each of the latches 46 can be substantially smaller than the height H2 of the second body 44, two of the T-shaped structures The gap at the lower end of the side (the gap formed by the difference in the width of the structure between the first body 42 and the second body 44) can just avoid the limit of the cassette 46. When the adapter plate 22 is electrically connected to the external slot 16, the card 46 does not interfere with the adapter plate 22 regardless of the forward and reverse rotation of the external slot 16, so the adapter plate 22 can be tested along with the card. With 10 unrestricted moves up and down, for the purpose of quick insertion and removal.

In summary, the author cuts the side edges of the adapter plate partially, so that the card does not interfere with the side structure of the adapter plate when the adapter plate is inserted into the external slot, so the adapter The board and the external slot do not need to provide the limit and release limit function through the card during the combination and separation process, so the adapter board can be quickly inserted and removed with the board test fixture. External slot. This creation does not use the cassette for the limit position. The board test fixture of the present invention uses the fixing member to pass through the fixing hole of the adapter plate and is disposed in the plate portion of the first pressure plate to securely mount the adapter plate in the first a pressure plate. In this way, the board test fixture can be pushed by the drive mechanism to accurately insert or unplug the adapter board into the external slot, and the adapter board is not limited by the external slot, thereby achieving full automation and rapid testing. the goal of. Compared with the prior art, the creation is simple in structure, easy to operate, and highly automated, and can automatically combine and separate the test circuit board and the circuit board to be tested, and improve the test efficiency to meet high quality design specifications.

The above descriptions are only preferred embodiments of the present invention, and all changes and modifications made by the scope of the patent application of the present invention should be covered by the present invention.

10‧‧‧ board test fixture

12‧‧‧ boards

14‧‧‧Test board

18‧‧‧First pressure plate

20‧‧‧Second platen

22‧‧‧Adapter plate

24‧‧‧elastic support

46‧‧‧Carmen

52‧‧‧Transfer slot

Claims (13)

A card test fixture for electrically connecting a circuit board to an external slot, the card test fixture comprising: a first pressure plate; a second pressure plate, the surface of the second pressure plate forming a slot; An adapter plate, a first end of the adapter plate is disposed on the first pressure plate, and the adapter plate is aligned with the second end of the first end to the slot of the second pressure plate; and an elastic support Between the first pressure plate and the second pressure plate, the first pressure plate is moved relative to the second pressure plate by the elastic support member, so that the second end of the adapter plate can be self-assured by the slot One end surface of the second pressure plate passes through the other end surface of the second pressure plate. The card test fixture of claim 1, wherein the adapter plate has a fixing hole, and the card test fixture further comprises a fixing member disposed on the first pressing plate, the fixing member penetrating the fixing hole The adapter plate is fixed to the first pressure plate. The card test fixture of claim 2, wherein the first pressure plate comprises a first plate portion and a second plate portion, the first plate portion has a recessed structure, and the fixing member is disposed in the recessed structure And the second plate portion is attached to the first plate portion to limit the fixing member. The card test fixture of claim 1, wherein the adapter plate comprises a first body and a second body, the second body is connected to the first body, and a width of the first body is substantially larger than the One of the widths of the second body. The card test fixture of claim 4, wherein the width of the second body is substantially smaller than the pitch of the two cassettes of the external slot. The card test fixture of claim 5, wherein one of the second bodies is highly substantive Greater than one of the heights of the cassette. The card test fixture of claim 4, wherein the adapter plate includes a guiding slot disposed on the second body, the guiding slot formed at the position of the second body substantially corresponding to one of the external slots pin. The card test fixture of claim 4, wherein the adapter plate includes a transition slot disposed in the first body. The card test fixture of claim 1, further comprising: a driving mechanism for adjusting a relative distance between the first pressure plate and the second pressure plate. The card test fixture of claim 9, wherein the driving mechanism is disposed on the first pressure plate, and the driving mechanism pushes the first pressure plate to compress the elastic support member to move the first pressure plate relative to the second pressure plate. . The card test fixture of claim 9, wherein the driving mechanism is disposed in the external slot, the driving mechanism pushes the outer slot to abut the second pressure plate, and the second pressure plate compresses the elastic support The piece moves relative to the first platen. The card test fixture of claim 1, wherein the elastic support member comprises: a first connecting portion disposed on the first pressing plate; a second connecting portion disposed on the second pressing plate, the second The connecting portion slidably connects the first connecting portion; and an elastic member disposed between the first connecting portion and the second connecting portion. The card test fixture of claim 12, wherein the first connecting portion is a receiving groove structure, the second connecting portion is a rod portion, and the two ends of the rod portion are respectively disposed on the receiving groove structure And the second pressure plate.