Height-adjustable optical module test tool

Abstract

The invention relates to a height-adjustable optical module test tool, which is characterized in that a base on a test board is connected with a fixed block, an insertion cavity opposite to a connector on the test board is arranged on two opposite side surfaces of the fixed block in a penetrating manner, heating / cooling modules are fixed on the upper surface and the lower surface of the fixed block, a movable block tightly attached to the bottom surface of the insertion cavity is inserted into the insertion cavity, and the movable block is connected with the test board. The upper surface of the movable block is a horizontal plane, the lower surface of the movable block is a first inclined plane which inclines upwards in the insertion direction of the movable block, the bottom surface of the insertion cavity is a second inclined plane parallel to the first inclined plane, and the height between the upper surface of the movable block and the top surface of the insertion cavity is increased and decreased when the first inclined plane of the movable block moves in the insertion direction close to the second inclined plane. The beneficial effects are that when the optical module is heated or cooled through the heating / cooling module, because the upper and lower surfaces of the optical module structural member can be tightly attached to the test tool, the air is not heated or cooled, so that the heating or cooling speed of the optical module is relatively accelerated, and the test time is shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical module testing, and particularly relates to a height-adjustable optical module testing tool. BACKGROUND

[0002] In order to determine whether the performance of the produced optical module meets the requirements, the optical module is often required to be tested in the production process. Therefore, the required equipment includes a testing tool. The traditional testing tool includes a testing board and a connector fixed on the testing board and electrically connected with the testing board. The connector is used for plug-in cooperation with the gold fingers of the optical module, so that the testing board can be electrically connected with the optical module through the connector. A base is fixed on the testing board. The base is fixedly connected with a fixed block arranged in suspension. A plug-in cavity for accommodating a structure of the optical module is formed through the fixed block on two opposite sides and faces the connector. The width size of the plug-in cavity matches the width size of the structure of the optical module. The height size of the plug-in cavity is slightly larger than the height size of the structure of the optical module. The bottom surface and the top surface of the plug-in cavity are both horizontal surfaces. When the structure of the optical module is inserted into the plug-in cavity, the fixed block can surround the structure of the optical module as much as possible and adhere to each other as much as possible. A heating / cooling module is fixed on the upper and lower surfaces of the fixed block in the area corresponding to the plug-in cavity. The heating / cooling module can be used for heating or cooling the optical module, so that the optical module can complete different temperature tests, such as low temperature 0℃, normal temperature 25℃ and high temperature 65℃. The heating / cooling module can be a common heating / cooling TEC block. The material of the fixed block is usually metal, such as red copper. The width size and the height size of the plug-in cavity are fixed values after the production of the testing tool. For common optical modules, such as Figure 1As shown, the height dimension of the structure gold finger end has a tolerance, for example, the design size is 13mm, but due to the tolerance, the upper limit value is 13.1mm and the lower limit value is 12.8mm, that is, the maximum size is 13.1mm, and in order to ensure that the optical module structure can be inserted into the insertion cavity of the fixed block, the height of the insertion cavity is usually designed as 13.11mm, the structure has a plurality of production processes, especially the mold, die casting machine and electroplating have a great influence on the size, if the height dimension of the structure is the lower limit value 12.8mm, when the optical module is tested, there is a gap between the structure and the bottom surface and the top surface of the insertion cavity, for example, the gap is 0.15mm, when the heating / cooling module heats or cools the fixed block, the heating / cooling module and the fixed block are in direct contact, so it is easy to heat or cool the fixed block, but due to the gap between the optical module structure in the fixed block and the fixed block, the heating or cooling process of the optical module by the fixed block will become heating or cooling the air in the gap first, and then heating or cooling the optical module by the air, and the air and the indoor air are flowing, so the heating or cooling speed of the optical module will become relatively slow, thereby wasting a lot of time. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a height-adjustable optical module test tool to overcome the shortcomings of the prior art.

[0004] The technical solution of the present application to solve the above technical problem is as follows: A height-adjustable optical module test tool, comprising: a test plate and a connector fixed on the test plate and electrically connected thereto, the test plate is fixedly connected with a fixed block arranged in suspension through a base, the fixed block is provided with an insertion cavity on two opposite sides for accommodating the optical module structure and facing the connector, a heating / cooling module is fixed on the upper and lower surfaces of the fixed block corresponding to the insertion cavity, an activity block is inserted into the insertion cavity and closely attached to the bottom surface of the insertion cavity, the upper surface of the activity block is a horizontal surface, the lower surface of the activity block is a first inclined surface inclined upward along the insertion direction, the bottom surface of the insertion cavity is a second inclined surface parallel to the first inclined surface, and the distance between the upper surface of the activity block and the top surface of the insertion cavity increases and decreases during the movement of the first inclined surface along the insertion direction.

[0005] The beneficial effects of the present application are: when testing the optical module by using the test tool, even if the height dimension of the optical module structure is any value within the tolerance range, the movable block in the test tool can be adjusted to ensure that there is no gap between the upper surface of the optical module structure and the fixed block, and there is no gap between the lower surface of the optical module structure and the movable block, and there is no gap between the lower surface of the movable block and the fixed block, that is, the upper and lower surfaces of the optical module structure can be tightly attached to the test tool, so that when the optical module is heated or cooled by the heating / cooling module, there is no air heating or cooling in the middle, which is conducive to temperature conduction to the optical module, thereby completing the heating or cooling of the optical module. Compared with the prior art, if the optical module structure has a size deviation, there is a gap between the optical module structure and the fixed block of the test tool, the heating or cooling speed is relatively fast, and the test time is shortened.

[0006] Based on the above technical solutions, the present application can also be improved as follows.

[0007] Further, the fixed block is provided with an adjusting slot on each side surface of the insertion cavity entrance along the insertion direction of the movable block, and the movable block is provided with an ear plate on each side surface corresponding to each adjusting slot, and a through hole is formed in the ear plate along the insertion direction of the movable block.

[0008] The above further beneficial effects are: through the cooperation of the screw, spring and ear plate, the movement of the movable block can be controlled, and stepless regulation can be realized within the stroke range, so as to adapt to the case that the height dimension of the optical module structure is any value within the tolerance range.

[0009] Further, each adjusting slot penetrates the side surface of the fixed block on the same side, and the screw is a hexagonal screw.

[0010] The above further beneficial effects are: the hexagonal wrench can be used to rotate the screw.

[0011] Further, the fixed block is provided with an insertion slot on each side surface along the insertion direction of the movable block, and the insertion slot is in communication with the insertion cavity.

[0012] The above further beneficial effects are: the running direction of the movable block can be guided.

[0013] Further, an accommodating groove for accommodating the optical module structure member is formed through the upper surface of the movable block along the insertion direction of the movable block, and the groove bottom of the accommodating groove is a horizontal surface, and the first inclined surface of the movable block makes the distance between the groove bottom of the accommodating groove and the top surface of the insertion cavity increase and decrease during the movement along the insertion direction.

[0014] Further, a plurality of threaded holes in communication with the insertion slot are formed on the upper surface of the fixed block above the insertion slot along the insertion direction of the movable block in a row, and a spring jack is threadedly connected in each threaded hole, and the head of the spring jack abuts against the area of the movable block in the insertion slot.

[0015] The further beneficial effect is that the head of the spring jack can be extended and retracted, and the movable block can be pressed on both sides during the movement of the movable block to prevent the movable block from being raised.

[0016] Further, the material of the fixed block and the movable block is metal.

[0017] The further beneficial effect is that the metal has good heat conductivity, which is beneficial to the heating or cooling of the optical module and the heat dissipation of the optical module during the normal temperature test.

[0018] Further, the material of the fixed block and the movable block is red copper.

[0019] Further, the heating / cooling module is a heating / cooling TEC block. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A size diagram of the optical module in the prior art; Figure 2 A structural diagram of the height-adjustable optical module test tool in the present application; Figure 3 A first exploded view of the height-adjustable optical module test tool in the present application; Figure 4 A second exploded view of the height-adjustable optical module test tool in the present application; Figure 5 A first local cross-sectional view of the height-adjustable optical module test tool in the present application; Figure 6 A second local cross-sectional view of the height-adjustable optical module test tool in the present application; Figure 7 A third local cross-sectional view of the height-adjustable optical module test tool in the present application; Figure 8 An assembly view of the fixed block and the heating / cooling module in the present application; Figure 9 A state diagram of the height-adjustable optical module test tool when testing the optical module.

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Test board, 2. Connector, 3. Base, 4. Fixed block, 410, Insert cavity, 411, Second inclined surface, 420, Adjustment slot, 430, Slot, 440, Threaded hole, 5. Heating / cooling module, 6. Movable block, 610, First inclined surface, 620, Ear plate, 621, Through hole, 630, Accommodating slot, 7. Screw, 8. Spring, 9. Spring top screw, 10. Optical module. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0023] Example 1 like Figures 2-9 As shown, a height-adjustable optical module test fixture includes: A test board 1 is provided, on which a connector 2 electrically connected thereto is fixed. The connector 2 is preferably located at the edge of the test board 1. The connector 2 is used to engage with the gold finger of the optical module, so that the test board 1 can be electrically connected to the optical module through the connector 2. A base 3 is fixed on the test board 1. The base 3 is also preferably located at the edge of the test board 1. The base 3 is fixedly connected to a suspended fixed block 4. The fixed block 4 has a cavity 410 on two opposite sides thereof, which is opposite to the connector 2 and is used to accommodate the structural components of the optical module 10. The width of the cavity 410 matches the width of the structural components of the optical module 10, while the height of the cavity 410 is greater than the height of the structural components of the optical module 10. A heating / cooling module 5 is fixed on the upper surface of the fixed block 4 in an area corresponding to the cavity 410, and a heating / cooling module 5 is fixed on the lower surface of the fixed block 4 in an area corresponding to the cavity 410. A movable block 6 is inserted into the insertion cavity 410 and is in close contact with the bottom surface of the insertion cavity 410. The upper surface of the movable block 6 is a horizontal surface, and the lower surface of the movable block 6 is a first inclined surface 610 that is inclined upward along the insertion direction of the movable block 6. The bottom surface of the insertion cavity 410 is a second inclined surface 411 that is parallel to the first inclined surface 610, that is, the second inclined surface 411 is also inclined upward along the insertion direction of the movable block 6. The top surface of the insertion cavity 410 is a horizontal surface, that is, the top surface of the insertion cavity 410 remains consistent with the prior art. The first inclined surface 610 of the movable block 6 moves along the second inclined surface 411 in the insertion direction, so that the distance between the upper surface of the movable block 6 and the top surface of the insertion cavity 410 increases and decreases. For example, when the height dimension of the optical module 10 structure is the upper limit value 13.1mm, the movable block 6 is pulled out, so that the distance between the upper surface of the movable block 6 and the top surface of the insertion cavity 410 is increased, and then the optical module 10 structure is inserted between the movable block 6 and the top surface of the insertion cavity 410. If the size is adjusted too large during the foregoing adjustment process, the movable block 6 can be pushed in, so that the upper surface of the structure is attached to the top surface of the insertion cavity 410, and the lower surface of the structure is attached to the upper surface of the movable block 6. Since the first inclined surface 610 of the movable block 6 can be tightly attached to the bottom surface of the insertion cavity 410, there is no gap between the upper surface of the structure and the fixed block 4, and there is no gap between the lower surface of the structure and the movable block 6, and there is no gap between the lower surface of the movable block 6 and the fixed block 4. Of course, if the height dimension is just right during the foregoing adjustment process, the movable block 6 does not need to be pushed in. When the height dimension of the optical module 10 structure is the lower limit value 12.8mm, the optical module 10 structure can be first inserted between the movable block 6 and the top surface of the insertion cavity 410, and then the movable block 6 is pushed in, so that the distance between the upper surface of the movable block 6 and the top surface of the insertion cavity 410 is reduced, i.e. to 12.8mm, so that the lower surface of the structure is attached to the upper surface of the movable block 6. Since the first inclined surface 610 of the movable block 6 can be tightly attached to the bottom surface of the insertion cavity 410, there is no gap between the upper surface of the structure and the fixed block 4, and there is no gap between the lower surface of the structure and the movable block 6, and there is no gap between the lower surface of the movable block 6 and the fixed block 4. Of course, this is just an example of two extreme values for adjustment. When the height dimension is 13.0mm, adjustment can also be performed accordingly, which will not be described in detail here. When the optical module is tested by using the type of test tool, even if the height dimension of the optical module 10 structure is any value within the tolerance range, the movable block 6 in the test tool can be adjusted to ensure that there is no gap between the upper surface of the optical module 10 structure and the fixed block 4, and there is no gap between the lower surface of the optical module 10 structure and the movable block 6, and there is no gap between the lower surface of the movable block 6 and the fixed block 4. Therefore, when the optical module is heated or cooled by the heating / cooling module 5, there is no air heating or cooling in the middle, which is conducive to temperature conduction to the optical module, thereby completing the heating or cooling of the optical module. Compared with the prior art, if the optical module structure has a size deviation, there is a gap between the optical module structure and the fixed block of the test tool, the heating or cooling speed is relatively fast, and the test time is shortened.

[0024] Embodiment 2 As Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Figure 9As shown, the present embodiment is a further improvement on the basis of example 1, and the specific improvements are as follows: The fixed block 4 is provided with an adjusting groove 420 on each side of the two sides of the insertion cavity 410 along the insertion direction of the movable block 6 at the position where the insertion cavity 410 enters, each adjusting groove 420 is in communication with the insertion cavity 410, and the movable block 6 has an ear plate 620 on each side corresponding to each adjusting groove 420, which enters the adjusting groove 420. Since there are two adjusting grooves 420, the number of ear plates 620 is also two, and a through hole 621 is formed in each ear plate 620 along the insertion direction of the movable block 6. One screw 7 is arranged in each adjusting groove 420, and the threaded end of the screw 7 in each adjusting groove 420 passes through the through hole 621 in the ear plate 620 in the adjusting groove 420 and is threadedly connected with the fixed block 4, that is, the fixed block 4 is provided with a hole for threadedly connecting with the screw 7. The size of the through hole 621 is larger than the outer diameter of the threaded end of the screw 7, and does not block the movement of the subsequent movable block 6. A spring 8 is sleeved on each screw 7, and the two ends of the spring 8 abut against the ear plate 620 and the fixed block 4 respectively. The spring 8 can always push the ear plate 620 of the movable block 6 to stick to the nut of the screw 7. Of course, other elastic members can be used to replace the spring 8 in actual application, such as a rubber ring. When adjusting the movable block 6, the screw 7 can be screwed forward or backward, for example, the screw 7 is screwed forward, and the screw 7 pushes the movable block 6 inward through the ear plate 620, at this time, the distance between the upper surface of the movable block 6 and the top surface of the insertion cavity 410 is reduced. When the screw 7 is screwed in the opposite direction, the spring 8 pushes the movable block 6 outward through the ear plate 620 by relying on the elastic force, at this time, the distance between the upper surface of the movable block 6 and the top surface of the insertion cavity 410 is increased. Of course, the direction described herein is only exemplary, and it is also possible that forward screwing of the screw 7 corresponds to an increase in the distance between the upper surface of the movable block 6 and the top surface of the insertion cavity 410, and reverse screwing of the screw 7 corresponds to a decrease in the distance between the upper surface of the movable block 6 and the top surface of the insertion cavity 410. Through the cooperation of the screw 7, the spring 8 and the ear plate 620, the movement of the movable block 6 can be controlled, and stepless adjustment can be realized within the stroke range, so as to adapt to the case that the height dimension of the structure of the optical module 10 is any value within the tolerance range.

[0025] Furthermore, each adjusting groove 420 penetrates the side surface of the fixed block 4 on the same side, for example, the adjusting groove 420 on the left side penetrates the left side surface of the fixed block 4, and the adjusting groove 420 on the right side penetrates the right side surface of the fixed block 4. The screw 7 is a hexagonal screw, and the screw 7 can be rotated by means of a hexagonal wrench.

[0026] Example 3 As shown in Figure 7 , Figure 8 The present embodiment is a further improvement on the basis of example 1 or 2, and the specific improvements are as follows: A plurality of insertion slots 430 are formed through the fixed block 4 on both sides of the insertion cavity 410 along the insertion direction of the movable block 6, the insertion slots 430 are communicated with the insertion cavity 410, the bottom surface of the insertion slot 430 is flush with or lower than the bottom surface of the insertion cavity 410, the two sides of the movable block 6 respectively extend into the two insertion slots 430, and the running direction of the movable block 6 can be guided.

[0027] Embodiment 4 As shown in Figure 3 , Figure 5 , this embodiment is a further improvement on the basis of embodiment 3, and the specific implementation is as follows: A containing groove 630 for containing the structural member of the optical module 10 is formed through the upper surface of the movable block 6 along the insertion direction of the movable block 6, the groove bottom of the containing groove 630 is a horizontal surface, and the first inclined surface 610 of the movable block 6 can make the distance between the groove bottom of the containing groove 630 and the top surface of the insertion cavity 410 larger and smaller during the movement along the insertion direction close to the second inclined surface 411, so that the middle region of the movable block 6 can be designed to be thinner under the condition that the strength of other regions is sufficient, thereby reducing the cost, and the optical module structure member can also be limited.

[0028] Embodiment 5 As shown in Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , this embodiment is a further improvement on the basis of embodiment 3 or 4, and the specific implementation is as follows: A plurality of threaded holes 440 communicated with the insertion slot 430 are formed through the upper surface of the fixed block 4 above each insertion slot 430 along the insertion direction of the movable block 6 in a row, the number of threaded holes 440 above each insertion slot 430 can be two, three, four, five, etc., and the specific number is not specifically limited here, a spring jack 9 is threadedly connected in each threaded hole 440, the spring jack 9 is a prior art, and its structure and working principle are not specifically introduced here, the head of the spring jack 9 abuts against the region of the movable block 6 in the insertion slot 430, and the head of the spring jack 9 can be telescopic and can press against the two sides of the movable block 6 during the movement of the movable block 6 to prevent the movable block 6 from being warped.

[0029] Embodiment 6 As shown in Figures 2-8 , this embodiment is a further improvement on the basis of any one of embodiments 1-5, and the specific implementation is as follows: The material of the fixed block 4 is metal, and the material of the movable block 6 is metal. Metal has good thermal conductivity, which is beneficial to heating or cooling the optical module. At the same time, it is also beneficial to the heat dissipation of the optical module during normal temperature testing. In this embodiment, the material of the fixed block 4 is preferably copper, and the material of the movable block 6 is preferably copper. Of course, this is only an exemplary statement, and other materials are not excluded in actual application. The fixed block 4 and the movable block 6 made of copper have good thermal conductivity.

[0030] Example 7 like Figures 2-9 As shown, this embodiment is a further improvement on the basis of any one of the embodiments 1 to 6, specifically as follows: The heating / cooling module 5 is preferably a heating / cooling TEC block. The heating / cooling TEC block is a prior art and its structure and working principle are not described in detail here. The use of the heating / cooling TEC block can effectively heat up or cool down the optical module.

[0031] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A height-adjustable optical module test fixture, comprising: A test board (1) and a connector (2) fixed on the test board (1) and electrically connected thereto, wherein the test board (1) is fixedly connected to a suspended fixed block (4) via a base (3), the fixed block (4) having a cavity (410) on two opposite sides thereof facing the connector (2) and used to accommodate a structure of an optical module (10), and heating / cooling modules (5) are fixed on the upper and lower surfaces of the fixed block (4) in areas corresponding to the cavity (410), characterized in that the cavity (410) A movable block (6) is inserted into the inserting cavity (410) so as to be in close contact with the bottom surface of the inserting cavity (410). The upper surface of the movable block (6) is a horizontal surface. The lower surface of the movable block (6) is a first inclined surface (610) inclined upward along the insertion direction. The bottom surface of the inserting cavity (410) is a second inclined surface (411) parallel to the first inclined surface (610). The first inclined surface (610) of the movable block (6) increases and decreases the distance between its upper surface and the top surface of the inserting cavity (410) during the movement along the insertion direction along the second inclined surface (411).

2. The height-adjustable optical module testing tool according to claim 1, characterized in that: The fixed block (4) is provided with an adjustment groove (420) on both sides of the insertion cavity (410) along the insertion direction of the movable block (6) on the side surface where the insertion cavity (410) entrance is located. The adjustment groove (420) is communicated with the insertion cavity (410). The movable block (6) has an ear plate (620) on the side surface corresponding to each adjustment groove (420) and enters the adjustment groove (420). The ear plate (620) is provided with a through hole (621) along the insertion direction of the movable block (6). A screw (7) is arranged in each adjustment groove (420). The screw end of the screw (7) in each adjustment groove (420) passes through the through hole (621) on the ear plate (620) in the adjustment groove (420) and is threadedly connected to the fixed block (4). A spring (8) is sleeved on each screw (7). The two ends of the spring (8) respectively press against the ear plate (620) and the fixed block (4).

3. The height-adjustable optical module testing tool according to claim 2, characterized in that: Each adjustment slot (420) passes through the fixing block (4) and the side surface thereof, respectively, and the screw (7) is a hexagon socket screw.

4. A height-adjustable optical module testing tool according to claim 1, 2 or 3, characterized in that: A slot (430) is formed on each side of the fixed block (4) along the insertion direction of the movable block (6) and on both sides of the insertion cavity (410). The slot (430) is connected to the insertion cavity (410). The bottom surface of the slot (430) is flush with or lower than the bottom surface of the insertion cavity (410). Both sides of the movable block (6) extend into the two slots (430) respectively.

5. The height-adjustable optical module testing tool according to claim 4, characterized in that: A receiving groove (630) for receiving a structure of the optical module (10) is provided on the upper surface of the movable block (6) along its insertion direction, wherein the bottom of the receiving groove (630) is a horizontal surface. When the first inclined surface (610) of the movable block (6) moves along the second inclined surface (411) in the insertion direction, the distance between the bottom of the receiving groove (630) and the top surface of the insertion cavity (410) increases or decreases.

6. The height-adjustable optical module testing tool according to claim 4, characterized in that: A plurality of threaded holes (440) communicating with the slots (430) are provided on the upper surface of the fixed block (4) in a row along the insertion direction of the movable block (6) above each slot (430). A spring top screw (9) is threadedly connected in each threaded hole (440). The head of the spring top screw (9) abuts against the area of ​​the movable block (6) in the slot (430).

7. The height-adjustable optical module testing tool according to claim 1, characterized in that: The fixed block (4) and the movable block (6) are made of metal.

8. The height-adjustable optical module testing tool according to claim 7, characterized in that: The material of the fixed block (4) and the movable block (6) is copper.

9. The height-adjustable optical module testing tool according to claim 1, characterized in that: The heating / cooling module (5) is a heating / cooling TEC block.

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