A drop test fixture for optical modules

Abstract

This utility model discloses a drop test fixture for optical modules, relating to the field of optical module testing technology. The fixture includes a carrier shell with two sets of mounting slots for placing optical modules inside. Each set of mounting slots is located on one side of the carrier shell. A support frame is located on the outer side of the carrier shell, near each mounting slot. A fixing mechanism is mounted on the support frame. One end of the fixing mechanism passes through a corresponding sliding hole on the side wall of the carrier shell and is slidably connected to the sliding hole, extending into the mounting slot. When the optical module is placed in the mounting slot and covered by a sealing cap, the fixing mechanism slides through the sliding hole, pressing the sealing cap and simultaneously fixing the optical module in the mounting slot. This utility model achieves synchronous multi-point clamping of the optical module and the sealing cap through a linked fixing mechanism, requiring only one operation to complete the overall locking. The clamping is convenient, the force is evenly distributed, and the fixing efficiency and reliability of the test fixture are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of optical module testing technology, and in particular to an optical module drop test fixture. Background Technology

[0002] In the reliability testing of optical modules, drop testing is an important step in evaluating their structural strength and seismic performance. During the test, the optical module must be firmly fixed in a special fixture to simulate free fall scenarios under different postures.

[0003] Existing test fixtures typically use multiple independent screws to fix the sealing cover separately or directly clamp the module shell. This results in cumbersome clamping steps and low operating efficiency. Especially when fixing at multiple points, each screw needs to be tightened individually, which is not only time-consuming and labor-intensive, but also prone to causing the optical module to shift or the shell to be damaged due to uneven force, affecting the accuracy of the test results. In addition, the fixing of the sealing cover and the optical module is often carried out in steps without a linkage mechanism, making it difficult to achieve rapid assembly and overall locking. Utility Model Content

[0004] This utility model provides a drop test fixture for optical modules, including a carrier shell. The carrier shell has two sets of mounting slots for placing optical modules. Each set of mounting slots is correspondingly arranged on one side of the carrier shell. A support frame is provided on the outside of the carrier shell near each mounting slot. A fixing mechanism is provided on the support frame. One end of the fixing mechanism passes through a corresponding sliding hole on the side wall of the carrier shell and is slidably connected to the sliding hole for extending into the mounting slot. When the optical module is placed in the mounting slot and covered by the sealing cover, the fixing mechanism slides through the sliding hole, pressing the sealing cover and fixing the optical module in the mounting slot.

[0005] Preferably, the fixing mechanism includes a second screw, which is threadedly connected to the support frame and rotatably connected to one end of the connecting plate, driving the connecting plate to move axially. The sliding plate is fixed to one side of the connecting plate, and the cover plate is fixed to the upper side of the connecting plate.

[0006] Preferably, the cover plate matches the shape of the positioning groove on the sealing cover to achieve positioning and insertion.

[0007] Preferably, a positioning plate is provided on the lower side of the skateboard. The positioning plate is elastically connected to the skateboard by a spring, and the end of the positioning plate near the sealing cover has an arc-shaped structure to facilitate guiding insertion.

[0008] Preferably, the slide plate has a through hole, and a screw is threadedly connected to the sealing cover. When the screw rotates and passes through the through hole downward, it pushes the positioning plate to move downward against the elastic force of the spring, thereby achieving pre-tightening and fixing of the optical module.

[0009] Preferably, push posts are symmetrically arranged on one side of the cover plate. One end of the push post is fixed to the cover plate, and the other end extends to the outer edge of the bearing shell and moves synchronously with the cover plate.

[0010] Preferably, each corner of the bearing shell is provided with an L-shaped plate, a limiting plate is fixedly provided on the inner side of the vertical section of the L-shaped plate, a fixing plate is slidably provided inside the limiting plate, and a spring is connected between the fixing plate and the L-shaped plate to provide a reset elastic force.

[0011] Preferably, the bottom of the fixing plate is provided with a protrusion, which is slidably embedded in the limiting groove opened at the bottom of the L-shaped plate, restricting the fixing plate to slide only in the horizontal direction.

[0012] Preferably, when the cover plate is screwed into place by the second screw, the push pin on it simultaneously pushes the fixing plate to slide against the elastic force of the second spring, so that the inner end of the fixing plate is locked into the corner area of ​​the sealing cover, thereby achieving multi-point linkage locking.

[0013] Preferably, the outer surface of the carrier shell is provided with anti-slip texture to improve friction and drop resistance during handheld operation.

[0014] This utility model provides a drop test fixture for optical modules, which, compared with the prior art, has the following advantages: 1. This utility model achieves rapid and stable fixing of the optical module and its sealing cover by setting up a linkage fixing mechanism composed of screw two, connecting plate, sliding plate and cover plate. In use, only screw two needs to be rotated to drive the cover plate to insert into the positioning groove of the sealing cover. At the same time, the push column drives the fixing plate at the corner to automatically lock. Combined with screw one pushing the positioning plate to press the sealing cover, a multi-point coordinated clamping is formed. This structure avoids the tedious operation of tightening multiple screws one by one in the traditional method, improves the clamping efficiency, and achieves a convenient fixing effect of overall locking in one operation.

[0015] 2. This utility model uses a mechanical linkage design to simultaneously complete the installation of the sealing cover and the clamping of the optical module. When the cover is inserted into place, the pusher driven by it simultaneously triggers the fixing plates at the corners of the bearing shell, so that the four corners of the sealing cover are automatically locked. At the same time, the screw can further press down the positioning plate to enhance the pre-tightening force in the middle. The whole process does not require separate fixing of the sealing cover and the optical module, nor does it require locking at each point. It effectively prevents module displacement or shell damage caused by uneven clamping, and ensures that the optical module always maintains a stable and reliable fixed state during the drop test. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of the overall structure of an embodiment of the present utility model; Figure 3 This is a schematic diagram showing the overall structure of an embodiment of the present utility model. Figure 4 This is a cross-sectional schematic diagram of the sealing cap structure according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the supporting shell and other structures according to an embodiment of the present utility model; Figure 6 This is an embodiment of the present utility model. Figure 5 A schematic diagram of the structure at point A; Figure 7 This is a schematic diagram of the fixing mechanism structure according to an embodiment of the present utility model; Figure 8 This is a side view of the fixing mechanism structure according to an embodiment of the present utility model.

[0018] Figure label: 1. Bearing shell; 2. Mounting groove; 3. Sealing cover; 31. Positioning groove; 32. Screw one; 4. Support frame; 41. Screw two; 42. Connecting plate; 43. Slide plate; 44. Through hole; 45. Positioning plate; 46. Spring one; 47. Cover plate; 48. Push column; 5. L-shaped plate; 51. Fixing plate; 52. Limiting plate; 53. Spring two. Detailed Implementation

[0019] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0020] Please refer to Figures 1-5 This utility model provides a drop test fixture for an optical module, including a carrier shell 1. The carrier shell 1 has two sets of symmetrically arranged mounting slots 2 inside, each set of mounting slots 2 being disposed on one side of the carrier shell 1 to accommodate the optical module to be tested.

[0021] After the optical module is installed, its top is covered by a sealing cap 3 to prevent it from loosening or falling off during testing.

[0022] Support frames 4 are provided on the outside of the bearing shell 1, near each mounting slot 2. The support frames 4 are fixed to the side wall of the bearing shell 1 and are used to install the fixing mechanism.

[0023] like Figure 7 and Figure 8 As shown, the fixing mechanism includes a second screw 41, a connecting plate 42, a sliding plate 43, a cover plate 47, and a pusher 48. The second screw 41 is threadedly connected to the support frame 4 and rotatably connected to one end of the connecting plate 42, so that rotating the second screw 41 can drive the connecting plate 42 to slide axially. The sliding plate 43 is fixed to one side of the connecting plate 42 to enhance structural stability and guide the direction of movement. The cover plate 47 is fixed to the upper side of the connecting plate 42, and its shape matches the positioning groove 31 opened on the side of the sealing cover 3, which can be inserted and achieve lateral positioning.

[0024] To further improve clamping reliability, a positioning plate 45 is provided on the lower side of the slide plate 43. The positioning plate 45 is elastically connected to the slide plate 43 by a spring 46, allowing it to move up and down in the vertical direction. The end of the positioning plate 45 near the sealing cover 3 has an arc-shaped structure, which facilitates automatic guidance during insertion and avoids jamming.

[0025] like Figure 2 As shown, a through hole 44 is also provided on the slide plate 43, and a screw 32 is threadedly connected to the sealing cover 3. When the screw 32 rotates and passes through the through hole 44 downward, its end pushes the positioning plate 45 to overcome the elastic force of the spring 46 and move downward, thereby applying pre-tightening pressure to the optical module and achieving mid-section clamping and fixing. The upper end of the screw 32 is flush with the sealing cover 3.

[0026] In addition, to achieve automatic locking of the corner area, push pins 48 are symmetrically arranged on one side of the cover plate 47. One end of the push pin 48 is fixed to the cover plate 47, and the other end extends to the outer edge of the bearing shell 1. When the cover plate 47 moves and is inserted into place with the connecting plate 42, the push pin 48 pushes the fixed plate 51 located at the corner of the bearing shell 1 to move simultaneously.

[0027] Specifically, refer to Figure 6 Each corner of the bearing shell 1 is provided with an L-shaped plate 5. A limiting plate 52 is fixedly provided on the inner side of the vertical section of the L-shaped plate 5. A fixing plate 51 is slidably provided in the limiting plate 52. A spring 53 is connected between the fixing plate 51 and the L-shaped plate 5 to provide a reset elastic force. A protrusion is provided at the bottom of the fixing plate 51. The protrusion is slidably embedded in the limiting groove opened at the bottom of the L-shaped plate 5, restricting it to slide only in the horizontal direction.

[0028] When the pusher 48 moves with the cover plate 47, it pushes the fixing plate 51 to slide inward against the elastic force of the second spring 53, so that its inner end is locked into the corner area of ​​the sealing cover 3, thereby achieving four-corner linkage locking.

[0029] To enhance operational safety, the outer surface of the carrier shell 1 is provided with anti-slip texture, which can increase the friction when holding the hand and prevent accidental slippage during handling or debugging.

[0030] In summary, the optical module to be tested is placed in the mounting slot 2 inside the carrier housing 1, the sealing cover 3 is placed on top, and the screw 41 is rotated to move the connecting plate 42 and the cover plate 47 inward. The cover plate 47 is inserted into the positioning slot 31 on the sealing cover 3 to achieve positioning. At the same time, the push column 48 pushes the fixing plate 51 to slide, so that it is locked into the corner of the sealing cover 3 to complete the four-corner locking. Then, the screw 32 is rotated to pass downward through the through hole 44 and push the positioning plate 45 to press the middle of the optical module, so as to achieve multi-point coordinated pre-tightening.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A drop test fixture for an optical module, the drop test fixture comprising: Includes a carrier shell (1), which has two sets of mounting slots (2) for placing optical modules. Each set of mounting slots (2) is located on one side of the carrier shell (1). A support frame (4) is provided on the outside of the carrier shell (1) and near each mounting slot (2). A fixing mechanism is provided on the support frame (4). One end of the fixing mechanism passes through the corresponding sliding hole on the side wall of the carrier shell (1) and is slidably connected to the sliding hole. It is used to extend into the mounting slot (2). When the optical module is placed in the mounting slot (2) and covered by the sealing cover (3), the fixing mechanism slides through the sliding hole, presses the sealing cover (3) and fixes the optical module in the mounting slot (2).

2. The optical module drop test tool of claim 1, wherein: The fixing mechanism includes a second screw (41), which is threadedly connected to the support frame (4) and rotatably connected to one end of the connecting plate (42), driving the connecting plate (42) to move axially. The sliding plate (43) is fixed to one side of the connecting plate (42), and the cover plate (47) is fixed to the upper side of the connecting plate (42).

3. The optical module drop test tooling of claim 2, wherein: The cover plate (47) matches the shape of the positioning groove (31) on the sealing cover (3) to achieve positioning and insertion.

4. The optical module drop test tooling of claim 3, wherein: A positioning plate (45) is provided on the lower side of the slide plate (43). The positioning plate (45) is elastically connected to the slide plate (43) by a spring (46). The end of the positioning plate (45) near the sealing cover (3) has an arc-shaped structure, which facilitates the insertion of the guide.

5. The optical module drop test tooling of claim 4, wherein: The slide plate (43) has a through hole (44), and the sealing cover (3) is threaded with a screw (32). When the screw (32) rotates and passes through the through hole (44) downward, it pushes the positioning plate (45) to overcome the elastic force of the spring (46) and move downward, thereby achieving the pre-tightening and fixing of the optical module.

6. The optical module drop test tool of claim 5, wherein: A pusher (48) is symmetrically arranged on one side of the cover plate (47). One end of the pusher (48) is fixed to the cover plate (47), and the other end extends to the outer edge of the bearing shell (1) and moves synchronously with the cover plate (47).

7. The optical module drop test tool of claim 2, wherein: Each corner of the bearing shell (1) is provided with an L-shaped plate (5). A limiting plate (52) is fixedly provided on the inner side of the vertical section of the L-shaped plate (5). A fixing plate (51) is slidably provided inside the limiting plate (52). A spring (53) is connected between the fixing plate (51) and the L-shaped plate (5) to provide a reset elastic force.

8. The optical module drop test tool of claim 7, wherein: The bottom of the fixing plate (51) is provided with a protrusion, which is slidably embedded in the limiting groove opened at the bottom of the L-shaped plate (5), restricting the fixing plate (51) to slide only in the horizontal direction.

9. The optical module drop test tool of claim 8, wherein: When the cover plate (47) is screwed into place by the screw (41), the pusher (48) on it pushes the fixing plate (51) to overcome the elastic force of the spring (53) and slide, so that the inner end of the fixing plate (51) is locked into the corner area of ​​the sealing cover (3) to achieve multi-point linkage locking.

10. The optical module drop test tool of claim 1, wherein: The outer surface of the bearing shell (1) is provided with anti-slip texture to improve the friction and anti-drop performance when hand-held operation.

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