Optical module test tool

Abstract

The utility model relates to an optical module testing tool which comprises a testing plate and an adapter used for being matched with an optical module to be tested in an inserted mode, a plurality of multi-head coaxial lines connected with a bit error tester are connected to the testing plate in an inserted mode, a bottom shell is fixed to the testing plate, an upper cover is fixed to the bottom shell, and the bottom shell is made of nonmetal. The upper cover is made of metal which is softer than zinc alloy, a test cavity for insertion of the optical module is formed between the bottom shell and the upper cover, a through hole penetrating through the bottom of the test cavity is formed in the bottom of the bottom shell, and the adapter is arranged in the through hole and electrically connected with the test plate. And an inner elastic sheet is arranged on the outer side of each unlocking arm on the handle in the corresponding optical module inserted in the test cavity. The optical module has the advantages that the bottom shell is made of nonmetal, the temperature can be prevented from being conducted to the test board at high temperature or low temperature, the test performance is prevented from being affected by too high or too low test temperature, the surface of the optical module is not prone to being scratched by the bottom shell made of nonmetal, and the probability that the optical module is poor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of optical module testing, and particularly relates to an optical module testing tooling. Background Art

[0002] Common testing toolings include: a stainless steel metal cage, a adapter, and a test board. A plurality of multi-headed coaxial cables connected to a bit error tester are plugged on the test board. The adapter is electrically connected to the test board and is used for plugging and matching with the optical module to be tested. The stainless steel metal cage is fixed on the test board and covers the adapter. When inserting or pulling out the optical module from the stainless steel metal cage, the optical module will inevitably rub against the stainless steel metal cage. Since the structural parts of the optical module generally adopt zinc alloy material, and the hardness of stainless steel is greater than that of zinc alloy, the structural parts of the optical module are scratched by the stainless steel metal cage, resulting in defective optical modules. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an optical module testing tooling to overcome the above deficiencies in the prior art.

[0004] The technical solution for the utility model to solve the above technical problem is as follows: an optical module testing tooling, comprising: a test board and an adapter for plugging and matching with the optical module to be tested. A plurality of multi-headed coaxial cables connected to a bit error tester are plugged on the test board. A bottom shell is fixed on the test board, and an upper cover is fixed on the bottom shell. The material of the bottom shell is non-metal, and the material of the upper cover is a metal softer than zinc alloy. There is a test cavity for inserting the optical module between the bottom shell and the upper cover. A through hole penetrating the bottom of the test cavity is opened at the bottom of the bottom shell. The adapter is arranged in the through hole and is electrically connected to the test board. An inner elastic sheet is arranged outside each unlocking arm on the handle of the optical module inserted in the test cavity.

[0005] The beneficial effect of the utility model is:

[0006] When this tool is used for testing optical modules, the gold finger end of the optical module is inserted into the test cavity and plugged into the adapter to start testing. In this solution, the structure formed by the bottom shell and the upper cover can replace the traditional stainless steel cage and meet the same testing requirements. The non-metallic material of the bottom shell can prevent the temperature from being transmitted to the test board at high or low temperatures, so as to prevent the test temperature from being too high or too low and affecting the test performance. The non-metallic material of the bottom shell is not easy to scratch the surface of the optical module, thereby reducing the probability of optical module failure. Similarly, the material of the upper cover is a metal that is softer than zinc alloy and is not easy to scratch the surface of the structural components in the optical module, thus reducing the probability of optical module failure. The internal spring clip in the test cavity is used to lock the optical module. Its function is the same as the spring clip on the metal cage in the prior art. The unlocking principle is also the same. That is, pulling the handle on the optical module, relying on the unlocking protrusion on the unlocking arm of the handle to unlock the internal spring clip for optical module plug-in and unplug testing.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, a lower concave cavity is provided on the bottom shell, and the end of the lower concave cavity away from the through hole passes through the end surface of the bottom shell. An upper concave cavity facing the lower concave cavity is opened on the upper cover, and the end of the upper concave cavity away from the through hole passes through the end surface of the upper cover. The lower concave cavity and the upper concave cavity are combined to form a test cavity.

[0009] Furthermore, a limit groove is opened on each side of the lower concave cavity on the bottom shell, and at least one limit screw is connected to each limit groove on the bottom shell in a threaded connection manner. One end of the inner spring piece is pressed in the limit groove by the limit screw, and the other end of the inner spring piece extends into the lower concave cavity and is distributed along the length direction of the lower concave cavity.

[0010] A further beneficial effect of the above method is that the inner spring piece is compressed by the limit screw to prevent the inner spring piece from being abnormally positioned.

[0011] Furthermore, the limiting groove includes: a first sub-groove, a second sub-groove and a third sub-groove opened on the bottom shell in a sequentially connected manner, the first sub-groove and the third sub-groove are distributed along the length direction of the lower concave cavity, the second sub-groove is distributed along the width direction of the lower concave cavity, and the side of the third sub-groove is connected to the lower concave cavity; the internal spring clip includes: a first spring clip, a second spring clip and a third spring clip connected in sequence, the first spring clip, the second spring clip and the third spring clip are respectively in the first sub-groove, the second sub-groove and the third sub-groove, the third spring clip extends into the lower concave cavity from the third sub-groove, and at least one threaded hole connected to the first sub-groove is opened on the outer side of each first sub-groove on the bottom shell, and the limiting screw is threadedly connected to the threaded hole and presses the first spring clip tightly against the groove wall of the first sub-groove.

[0012] A further beneficial effect of the above method is that the inner spring piece can be effectively fixed to prevent the inner spring piece from being abnormally positioned.

[0013] Furthermore, the inner elastic piece is formed by bending a stainless steel elastic piece.

[0014] Furthermore, a plurality of fixing holes with internal threads are provided on the upper cover, and screws are threadedly connected in the fixing holes on the upper cover to fix the tooling or equipment for the heating block or the cooling block.

[0015] The beneficial effect of the above further is that when the heating block is expanded on the upper cover, it is convenient for high-temperature testing, and when the cooling block is expanded on the upper cover, it is convenient for low-temperature testing.

[0016] Furthermore, the upper cover and the bottom shell are connected by a plurality of assembly screws.

[0017] Furthermore, a positioning structure is provided between the bottom shell and the upper cover.

[0018] The beneficial effect of the above further is that the positioning structure can prevent the upper cover and the bottom shell from being misaligned, so that the upper cover and the bottom shell can be quickly and accurately assembled.

[0019] Furthermore, the positioning structure includes: at least one positioning post fixed on the bottom shell and at least one positioning hole provided on the upper cover, and the positioning post on the bottom shell extends into the positioning hole on the upper cover.

[0020] Furthermore, the material of the upper cover is aluminum alloy or copper, and the material of the bottom shell is bakelite, Teflon or PEK. Description of the Drawings

[0021] Figure 1 is the three-dimensional view of the optical module testing tooling in the present utility model Figure 1 ;

[0022] Figure 2 is the three-dimensional view of the optical module testing tooling in the present utility model Figure 2 ;

[0023] Figure 3 is the partial structure diagram of the optical module testing tooling in the present utility model;

[0024] Figure 4 is the structure diagram of the bottom shell in the present utility model;

[0025] Figure 5 is the structure diagram of the upper cover in the present utility model;

[0026] Figure 6 is the structure diagram of the inner elastic piece in the present utility model;

[0027] Figure 7 is the structure diagram of the optical module inserted into the optical module testing tooling.

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1. Test board, 2. Adapter, 3. Multi - head coaxial cable, 4. Bottom shell, 410. Through - hole, 420. Lower concave cavity, 430. Limit groove, 431. First sub - groove, 432. Second sub - groove, 433. Third sub - groove, 440. Threaded hole, 450. Positioning post, 5. Upper cover, 510. Upper concave cavity, 520. Fixing hole, 530. Positioning hole, 6. Inner elastic piece, 610. First elastic piece, 620. Second elastic piece, 630. Third elastic piece, 7. Limit screw, 8. Assembly screw. Detailed implementation mode

[0030] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only used to explain the present utility model and are not used to limit the scope of the present utility model.

[0031] Embodiment 1

[0032] As Figure 1 、 Figure 2 shown, an optical module test tooling includes: a test board 1 and an adapter 2 for plugging and mating with the optical module to be tested. A plurality of multi - head coaxial cables 3 connected to an error code detector are plugged on the test board 1. A bottom shell 4 is fixed on the test board 1, and an upper cover 5 is fixed on the bottom shell 4. The material of the bottom shell 4 is non - metal, and the material of the upper cover 5 is a metal softer than zinc alloy. There is a test cavity for the optical module to be inserted between the bottom shell 4 and the upper cover 5. In addition, a through - hole 410 penetrating the bottom of the test cavity is opened at the bottom of the bottom shell 4. The adapter 2 is arranged in the through - hole 410 and is electrically connected to the test board 1. Inside the test cavity, an inner elastic piece 6 is provided on the outer side of each unlocking arm of the handle in the inserted optical module.

[0033] As Figure 7 shown, when this tooling is used for optical module testing, the gold - finger end of the optical module is inserted into the test cavity, and the gold - finger end of the optical module is plugged into the adapter 2, then the testing work can be carried out. In this solution, the structure composed of the bottom shell 4 and the upper cover 5 can replace the traditional stainless - steel cage and meet the same testing requirements. Since the material of the bottom shell 4 is non - metal, it can prevent the temperature from being conducted to the test board 1 at high or low temperatures, so as to avoid the test temperature being too high or too low and affecting the test performance. The non - metal bottom shell 4 is not easy to scratch the surface of the optical module, thus reducing the probability of causing defects in the optical module. Similarly, the material of the upper cover 5 is a metal softer than zinc alloy, which is also not easy to scratch the surface of the structural parts in the optical module, and also reduces the probability of causing defects in the optical module. The inner elastic piece 6 in the test cavity is used to lock the optical module, and its function and unlocking principle are the same as those of the elastic piece on the metal cage in the prior art, that is, by pulling the handle on the optical module, the unlocking convex point on the unlocking arm of the handle is relied on to unlock the inner elastic piece 6 for optical module plug - and - unplug testing.

[0034] Embodiment 2

[0035] As Figure 3 , Figure 4 , Figure 5 shown, this embodiment is a further improvement on the basis of Embodiment 1, specifically as follows:

[0036] A lower concave cavity 420 is provided on the bottom case 4, and one end of the lower concave cavity 420 facing away from the through hole 410 penetrates through the end face of the bottom case 4. An upper concave cavity 510 facing the lower concave cavity 420 is provided on the upper cover 5, and one end of the upper concave cavity 510 facing away from the through hole 410 penetrates through the end face of the upper cover 5. When the upper cover 5 is fixed to the bottom case 4, the lower concave cavity 420 and the upper concave cavity 510 will combine to form a test cavity.

[0037] Embodiment 3

[0038] As Figure 3 , Figure 4 , Figure 5 , Figure 6 shown, this embodiment is a further improvement on the basis of Embodiment 2, specifically as follows:

[0039] On both sides of the lower concave cavity 420 on the bottom case 4, a limit groove 430 is opened respectively. At each limit groove 430 on the bottom case 4, at least one limit screw 7 is connected in a threaded connection manner. The number of limit screws 7 can be determined according to the actual situation, such as one, two, or three. One end of the inner elastic sheet 6 is pressed by the limit screw 7 in the limit groove 430, and the other end of the inner elastic sheet 6 extends into the lower concave cavity 420 and is distributed along the length direction of the lower concave cavity 420. The inner elastic sheet 6 is pressed by the limit screw 7 to prevent the abnormal position of the inner elastic sheet 6.

[0040] According to the protocol requirements, the two inner elastic sheets 6 can be symmetrically distributed or asymmetrically distributed. Therefore, at this time, the depths of the two limit grooves 430 can be the same or different, which is specifically determined according to the actual situation.

[0041] Furthermore, the limit groove 430 includes: a first sub-groove 431, a second sub-groove 432, and a third sub-groove 433. Among them, the first sub-groove 431, the second sub-groove 432, and the third sub-groove 433 are opened on the bottom case 4 in a sequentially connected manner. The first sub-groove 431 is distributed along the length direction of the lower concave cavity 420, the third sub-groove 433 is distributed along the length direction of the lower concave cavity 420, and the second sub-groove 432 is distributed along the width direction of the lower concave cavity 420. In addition, the side surface of the third sub-groove 433 is communicated with the lower concave cavity 420;

[0042] The inner elastic piece 6 includes: a first elastic piece 610, a second elastic piece 620, and a third elastic piece 630. The first elastic piece 610, the second elastic piece 620, and the third elastic piece 630 are connected in sequence. The first elastic piece 610, the second elastic piece 620, and the third elastic piece 630 are respectively located in the first sub-groove 431, the second sub-groove 432, and the third sub-groove 433. The third elastic piece 630 extends from the third sub-groove 433 into the concave cavity 420. At least one threaded hole 440 communicating with the first sub-groove 431 is opened on the bottom case 4 outside each first sub-groove 431. The limit screw 7 is threadedly connected to the threaded hole 440 and presses the first elastic piece 610 tightly against the groove wall of the first sub-groove 431. This method can effectively fix the inner elastic piece 6 to prevent the abnormal position of the inner elastic piece 6.

[0043] In this embodiment: The inner elastic piece 6 is bent from a stainless steel elastic piece with a certain thickness. For example, a stainless steel elastic piece with a thickness of 0.2 mm.

[0044] Embodiment 4

[0045] As Figure 1 、 Figure 5 shown, this embodiment is a further improvement based on any one of Embodiments 1 to 3, and the specific content is as follows:

[0046] A plurality of fixing holes 520 with internal threads are opened on the upper cover 5, and screws are threadedly connected in the fixing holes 520 on the upper cover 5 to fix the tooling or equipment of the heating block or the refrigerating block. When the heating block is expanded on the upper cover 5, it is convenient for high-temperature testing. When the refrigerating block is expanded on the upper cover 5, it is convenient for low-temperature testing.

[0047] Embodiment 5

[0048] As Figure 1 、 Figure 4 、 Figure 5 shown, this embodiment is a further improvement based on any one of Embodiments 1 to 4, and the specific content is as follows:

[0049] The upper cover 5 and the bottom case 4 are connected by a plurality of assembly screws 8, which is convenient for disassembly and assembly.

[0050] There is a positioning structure between the bottom case 4 and the upper cover 5. Among them, the positioning structure includes: at least one positioning post 450 fixed on the bottom case 4 and at least one positioning hole 530 formed on the upper cover 5. The positioning post 450 on the bottom case 4 extends into the positioning hole 530 on the upper cover 5. Through the positioning structure, the dislocation between the upper cover 5 and the bottom case 4 can be prevented, so that the upper cover 5 and the bottom case 4 can be assembled quickly and accurately. The number of the positioning posts 450 can be one, two, three, etc., which is specifically determined according to the cross-sectional shapes of the positioning post 450 and the positioning hole 530. For example, if the cross-sectional shapes of the positioning post 450 and the positioning hole 530 are polygons, then one positioning post 450 can meet the positioning requirements. If the cross-sectional shape of the positioning post 450 is circular, then at least two positioning posts 450 are required. For example, as shown in the attached drawings, there are three positioning posts 450.

[0051] Embodiment 6

[0052] As Figures 1 to 5 shown, this embodiment is a further improvement on any one of Embodiments 1 to 5, and the specific details are as follows:

[0053] The material of the upper cover 5 is aluminum alloy or copper, which is softer than zinc alloy, so as not to scratch the structural parts of the optical module. The material of the bottom case 4 is bakelite, Teflon or PEK (polyether ketone).

[0054] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An optical module test tooling, characterized in that, Comprising: A test board (1) and an adapter (2) for plugging and mating with an optical module to be tested. A plurality of multi-headed coaxial cables (3) connected to an error detector are plugged on the test board (1). A bottom case (4) is fixed on the test board (1), and a top cover (5) is fixed on the bottom case (4). The bottom case (4) is made of a non-metal material, and the top cover (5) is made of a metal softer than zinc alloy. There is a test cavity for inserting the optical module between the bottom case (4) and the top cover (5). A through hole (410) penetrating the bottom of the test cavity is opened at the bottom of the bottom case (4). The adapter (2) is arranged in the through hole (410) and electrically connected to the test board (1). Inside the test cavity, an inner elastic piece (6) is provided outside each unlocking arm on the handle of the inserted optical module.

2. The optical module testing tooling according to claim 1, characterized in that, A lower concave cavity (420) is provided on the bottom case (4). One end of the lower concave cavity (420) facing away from the through hole (410) penetrates the end face of the bottom case (4). An upper concave cavity (510) facing the lower concave cavity (420) is opened on the top cover (5). One end of the upper concave cavity (510) facing away from the through hole (410) penetrates the end face of the top cover (5). The lower concave cavity (420) and the upper concave cavity (510) combine to form a test cavity.

3. The optical module testing tooling according to claim 2, wherein On the bottom case (4), a limiting groove (430) is opened on each side of the lower concave cavity (420). At least one limiting screw (7) is connected to each limiting groove (430) on the bottom case (4) in a threaded connection manner. One end of the inner elastic piece (6) is pressed by the limiting screw (7) in the limiting groove (430), and the other end of the inner elastic piece (6) extends into the lower concave cavity (420) and is distributed along the length direction of the lower concave cavity (420).

4. The optical module testing tooling according to claim 3, characterized in that, The limiting groove (430) includes: a first sub-groove (431), a second sub-groove (432), and a third sub-groove (433) opened on the bottom case (4) in a sequentially connected manner. The first sub-groove (431) and the third sub-groove (433) are distributed along the length direction of the lower concave cavity (420), the second sub-groove (432) is distributed along the width direction of the lower concave cavity (420), and the side of the third sub-groove (433) is communicated with the lower concave cavity (420). The inner elastic piece (6) includes: a first elastic piece (610), a second elastic piece (620), and a third elastic piece (630) connected in sequence. The first elastic piece (610), the second elastic piece (620), and the third elastic piece (630) are respectively located in the first sub-groove (431), the second sub-groove (432), and the third sub-groove (433). The third elastic piece (630) extends from the third sub-groove (433) into the lower concave cavity (420). At least one threaded hole (440) communicated with the first sub-groove (431) is opened on the outside of each first sub-groove (431) on the bottom case (4). The limiting screw (7) is threadedly connected to the threaded hole (440) and presses the first elastic piece (610) tightly against the groove wall of the first sub-groove (431).

5. The optical module testing tooling according to claim 1, characterized in that, The inner elastic piece (6) is bent from a stainless steel elastic piece.

6. The optical module test tooling according to claim 1, characterized in that, A plurality of fixing holes (520) with internal threads are formed in the upper cover (5), and screws are threadedly connected in the fixing holes (520) on the upper cover (5) to fix the tooling or equipment for the heating block or the cooling block.

7. The optical module testing tooling according to claim 1, characterized in that, The upper cover (5) and the bottom shell (4) are connected by a plurality of assembly screws (8).

8. The optical module testing tooling according to claim 1, wherein A positioning structure is provided between the bottom shell (4) and the upper cover (5).

9. The optical module testing tooling according to claim 8, wherein The positioning structure includes: at least one positioning post (450) fixed on the bottom shell (4) and at least one positioning hole (530) formed in the upper cover (5), and the positioning post (450) on the bottom shell (4) extends into the positioning hole (530) on the upper cover (5).

10. The optical module testing tooling according to claim 1, characterized in that, The material of the upper cover (5) is aluminum alloy or copper, and the material of the bottom shell (4) is bakelite, Teflon or PEK.

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