Clamp for reliability test of semiconductor pump laser

Abstract

The utility model relates to a clamp for a reliability test of a semiconductor pump laser, and the clamp comprises a fixing assembly which comprises a clamping rod and a connecting structure, and the connecting structure is connected with a connecting rod, so as to enable the clamping rod to be connected to a vibration testboard; the positioning device comprises two bottom plates and four side plates, the two bottom plates are parallel to each other, the side plates are perpendicular to the bottom plates, the two bottom plates and the four side plates are spliced to form a cuboid-shaped positioning box, adjacent side walls of the positioning box are connected through bolts, and mounting holes are formed in the side walls of the positioning box; when the clamping rod is connected to the vibration test bench, the positioning box is placed on the surface of the vibration test bench and located between the clamping rod and the surface of the vibration test bench, and the clamping rod presses and fixes the positioning box on the vibration test bench. According to the laser vibration test fixture, the vibration test of the laser at multiple test angles can be completed through one fixture, the manufacturing cost of the fixture is low, the fixture is simple to fix on the vibration test table, the test work of multiple lasers can be carried out simultaneously, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of laser testing technology, specifically to a fixture for reliability testing of semiconductor pumped lasers. Background Technology

[0002] Vibration testing is an essential part of reliability testing for semiconductor pumped lasers. Its purpose is to evaluate the mechanical strength and structural integrity of the laser under vibration.

[0003] When conducting vibration tests on a laser, it is necessary to fix the laser on a vibration test table and position it to ensure the accuracy and repeatability of the test. Generally, a laser fixture is designed to be fixed to the vibration table, with fixing and positioning points for the laser on the fixture. The fixture secures the laser to the vibration test table and achieves laser positioning.

[0004] Sensor fixtures in related technologies can usually only fix the sensor on the vibration test bench at a set angle. However, some sensors need to be vibrated at multiple different test angles. Each test angle requires a corresponding fixture design, resulting in a large number of fixtures. Furthermore, multiple different fixtures need to be changed during testing to perform tests at multiple different test angles, which increases costs and makes the testing operation more cumbersome. Utility Model Content

[0005] Based on the above description, this utility model provides a fixture for reliability testing of semiconductor pumped lasers, which solves the problem that sensor fixtures in related technologies can usually only fix the sensor on the vibration test table at a set angle, while some sensors need to be vibrated at multiple different test angles. Each test angle requires a corresponding fixture design, resulting in a large number of fixtures. Moreover, multiple different fixtures need to be changed during testing to perform tests at multiple different test angles, which increases costs and makes the testing operation more cumbersome.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] This application provides a fixture for reliability testing of semiconductor-pumped lasers, and the technical solution adopted is as follows:

[0008] A fixture for reliability testing of semiconductor-pumped lasers, comprising:

[0009] A fixing assembly includes a clamping rod and a connecting structure, the connecting structure being connected to the connecting rod and used to connect the clamping rod to a vibration test bench;

[0010] A positioning device includes two base plates and four side plates. The two base plates are parallel to each other, and the side plates are perpendicular to the base plates. The two base plates and four side plates are spliced ​​together to form a cuboid positioning box. The two base plates and four side plates form the six side walls of the positioning box, and the adjacent side walls of the positioning box are connected by bolts. The positioning box is used to accommodate a laser, and each side wall of the positioning box is provided with mounting holes for fixing the laser, which is suitable for fixing the laser to the side wall of the positioning box by bolts.

[0011] Specifically, when the clamping rod is connected to the vibration test bench through the connecting structure, the positioning box is placed on the vibration test bench surface and located between the clamping rod and the vibration test bench surface, and the positioning box is pressed and fixed on the vibration test bench by the clamping rod.

[0012] Preferably, the connection structure includes two connecting screws, which are respectively connected to both ends of the clamping rod. The axis of the connecting screw is perpendicular to the axis of the clamping rod. One end of the connecting screw is used to connect to the vibration test bench, and the other end passes through the clamping rod and is connected to a limiting nut. This is suitable for restricting the movement of the clamping rod away from the vibration test bench when the positioning device is pressed and fixed on the vibration test bench by the clamping rod.

[0013] Preferably, the clamping rod includes a clamping plane, the axis of the connecting screw is perpendicular to the clamping plane, and when the clamping rod is connected to the vibration test bench through the connecting screw, the clamping plane is parallel to the vibration test bench surface and faces the vibration test bench surface.

[0014] Preferably, in the four side plates, two adjacent side plates are connected to a connecting plate located inside the positioning box. The side of the side plate facing the inside of the positioning box is a connecting plane. A hinge ball is connected to the connecting plane. The connecting plate includes a positioning plane and is provided with a ball hinge hole located on the positioning plane. The hinge ball is embedded in the ball hinge hole and forms a ball hinge with the connecting plate. A driving assembly is provided between the side plate and the connecting plate. The driving assembly is used to drive the connecting plate to rotate around a first axis and a second axis passing through the center of the hinge ball, and to limit the rotation of the connecting plate around the first axis and the second axis. The first axis and the second axis are perpendicular to each other and parallel to the connecting plane. The connecting plate is provided with a fixing hole for fixing the laser.

[0015] Preferably, the driving component includes:

[0016] Two first adjusting bolts are threaded onto the side plate and their axes are perpendicular to the connecting plane. The two first adjusting bolts are distributed on both sides of the hinge ball along the second axis, and the axes of the first adjusting bolts intersect the second axis. One end of the first adjusting bolt is in contact with the positioning plane of the connecting plate.

[0017] Two second adjusting bolts are threaded onto the side plate and their axes are perpendicular to the connecting plane. The two second adjusting bolts are distributed on both sides of the hinge ball along the first axis direction, and the axes of the second adjusting bolts intersect the first axis. One end of the second adjusting bolt is in contact with the positioning plane of the connecting plate.

[0018] Preferably, the end faces of the first adjusting bolt and the second adjusting bolt that contact the positioning plane are both convex spherical surfaces.

[0019] Compared with the prior art, the technical solution of this application has at least the following beneficial technical effects:

[0020] 1. This application, by setting a positioning device and fixing components, constructs a rectangular positioning box formed by splicing four side plates and two base plates. Each side wall of the positioning box is provided with mounting holes for fixing the laser. Through the cooperation of bolts and mounting holes, the laser is fixed to the side wall of the positioning box in a set posture, thereby realizing the fixing of the laser to the positioning box and its positioning on the positioning box. The rectangular positioning box can be stably placed on the vibration test table, and the positioning box is pressed and fixed on the vibration test table by the clamping rod and connecting structure in the fixing components, thereby completing the fixing of the positioning box on the vibration test table. By adjusting the position of the positioning box on the vibration test table, the laser is positioned on the vibration test table, thus completing the fixing and positioning of the laser on the vibration test table. The operation is simple and convenient. The rectangular positioning box allows for adjustment of the laser's testing angle by fitting different side plates or the base plate against the vibration testing table surface. This enables vibration testing of the laser at multiple angles, all within a single fixture, which is inexpensive to manufacture, thus reducing equipment costs. Furthermore, the presence of mounting holes on each side wall of the positioning box allows for the simultaneous testing of multiple lasers, improving efficiency.

[0021] 2. This application incorporates a connecting plate on two adjacent side plates. The connecting plate forms a ball-and-socket joint with the side plates via a hinged ball and a ball-and-socket hinge hole. This allows the connecting plate to rotate around the center of the hinged ball relative to the connecting plane of the side plates, thereby adjusting the relative angle between the positioning plane and the connecting plane. Since the connecting plate has fixing holes for securing the laser, the laser can be fixed to the connecting plate in a predetermined posture using bolts. The relative angle between the laser and the connecting plane can be adjusted by rotating the connecting plate. When the designed test angle of the laser cannot be achieved when the positioning box is fixed on the vibration test bench, the laser angle can be adjusted to the designed test angle by rotating the connecting plate. This improves the applicability of the fixture and meets the fixing and positioning requirements of various laser vibration testing operations. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of a fixture for reliability testing of semiconductor pumped lasers provided in an embodiment of this utility model;

[0023] Figure 2 A schematic diagram of the positioning box in a fixture for reliability testing of semiconductor pumped lasers provided in an embodiment of this utility model;

[0024] Figure 3 A schematic diagram of the connection structure between the connecting plate and the side plate in a fixture for reliability testing of semiconductor pumped lasers provided in an embodiment of this utility model;

[0025] Figure 4 A schematic diagram showing the distribution of the first and second adjusting bolts in a fixture for reliability testing of a semiconductor pumped laser provided in an embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Clamping rod; 2. Base plate; 3. Side plate; 31. Connecting protrusion; 311. Through hole; 32. Connecting plane; 33. Hinge ball; 4. Positioning box; 41. Mounting hole; 5. Positioning plate; 6. Connecting screw; 7. Limit nut; 8. Connecting plate; 81. Positioning plane; 9. First adjusting bolt; 10. Second adjusting bolt. Detailed Implementation

[0028] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0030] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0031] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0032] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0033] Reference Figure 1-4As shown in the illustration, this application provides a fixture for reliability testing of semiconductor pumped lasers, including a fixing component and a positioning device. The fixing component includes a clamping rod 1 and a connecting structure. The connecting structure is connected to the clamping rod and is used to connect the clamping rod 1 to a vibration test bench. The positioning device includes two base plates 2 and four side plates 3. The two base plates 2 are parallel to each other, and the side plates 3 are perpendicular to the base plates 2. The two base plates 2 and the four side plates 3 are spliced ​​to form a cuboid positioning box 4. The two base plates 2 and the four side plates 3 form the six side walls of the positioning box 4, and the adjacent side walls of the positioning box 4 are connected by bolts. The positioning box 4 is used to accommodate the laser, and each side wall of the positioning box 4 is provided with mounting holes 41 for fixing the laser, which is suitable for fixing the laser to the side wall of the positioning box 4 by bolts. The positioning box 4 is placed on the vibration test bench surface and positioned between the clamping rod 1 and the vibration test bench surface when the clamping rod 1 is connected to the vibration test bench via the connecting structure. The clamping rod 1 presses and fixes the positioning device to the vibration test bench.

[0034] Reference Figure 1-2 As shown, specifically, mounting holes 41 are provided on both the side plate 3 and the bottom plate 2. The mounting holes 41 are threaded holes, so that the laser can be fixed on the side plate 3 or the bottom plate 2 by means of bolts cooperating with the mounting holes 41.

[0035] Reference Figure 1-2 As shown, to facilitate the movement of the positioning box 4, notches are provided on all four sides of the base plate 2. These notches are perpendicular to the base plate 2. The side plates 3 have connecting protrusions that pass through the notches on both sides perpendicular to the base plate 2. Each connecting protrusion has a through hole 311. The side of the multiple connecting protrusions passing through the same base plate 2 that is furthest from the side plate 3 is equidistant from the base plate 2. The through holes 311 allow workers to pass rods through to move the positioning box 4. The equidistant arrangement of the multiple connecting protrusions passing through the same base plate 2 ensures that when the multiple connecting protrusions simultaneously contact the vibration test bench surface, the base plate 2 is parallel to the vibration test bench surface, thus improving the stability of the positioning box 4 on the vibration test bench surface. In this embodiment, the connecting protrusions are integrally formed with the side plates 3, and the side of the connecting protrusion furthest from the side plate 3 is a plane parallel to the base plate 2. Correspondingly, this plane is coplanar on the multiple connecting protrusions of the same base plate 2.

[0036] Reference Figure 1-2As shown, furthermore, when the positioning box 4 is supported by contacting the vibration test table surface through the four connecting protrusions, four positioning plates 5 are provided to further improve the stability of the positioning box 4. The positioning plates 5 are set to have the same thickness as the plane of the connecting protrusion away from the side plate 3 and the same distance to the bottom plate 2. When the positioning box 4 is in contact with the vibration test table surface through the four connecting protrusions, a positioning plate 5 is set between two adjacent connecting protrusions. The positioning plate 5 abuts against the two adjacent connecting protrusions, and the positioning blocks are in contact with both the vibration test table surface and the bottom plate 2. Thus, the contact area between the positioning box 4 and the vibration test table surface is increased by the four positioning blocks to improve the stability of the positioning box 4.

[0037] Reference Figure 1 As shown, the connection structure includes two connecting screws 6, which are respectively connected to both ends of the clamping rod 1. The axis of the connecting screw 6 is perpendicular to the axis of the clamping rod 1. One end of the connecting screw 6 is used to connect to the vibration test bench, and the other end passes through the clamping rod 1 and is connected to a limit nut 7. This is suitable for limiting the movement of the clamping rod 1 away from the vibration test bench when the positioning device is pressed and fixed on the vibration test bench by the clamping rod 1.

[0038] Reference Figure 1-2 As shown, specifically, the clamping rod 1 includes a clamping plane, and the axis of the connecting screw 6 is perpendicular to the clamping plane. When the clamping rod 1 is connected to the vibration test bench via the connecting screw 6, the clamping plane is parallel to and faces the vibration test bench surface. One end of the connecting screw 6 connected to the vibration test bench is fitted with a threaded hole on the vibration test bench to fix the connecting screw 6 to the vibration test bench. The clamping plane of the clamping rod 1 increases the contact area with the positioning box 4, thereby improving the clamping and fixing effect of the clamping rod 1 on the positioning box 4. In actual operation, after placing the positioning box 4 on the vibration test bench surface and adjusting its position and angle, the clamping rod 1 is connected to the vibration test bench via the connecting screw 6, and the clamping rod 1 is made to press against the positioning box 4. The limiting nut 7 is tightened to abut against the clamping rod 1, so that the clamping rod 1 maintains the state of pressing the positioning box 4, ensuring that the positioning box 4 is pressed and fixed on the vibration test bench and remains stable.

[0039] Reference Figure 3As shown, furthermore, for some lasers, even when the laser is fixed to the positioning box 4 and the positioning box 4 is fixed to the vibration test bench, the designed test angle of the laser cannot be achieved. To solve this problem, among the four side plates 3, two adjacent side plates 3 are connected to a connecting plate 8 located inside the positioning box 4. The side of the side plate 3 facing the inside of the positioning box 4 is a connecting plane 32. A hinge ball 33 is connected to the connecting plane 32. The connecting plate 8 includes a positioning plane 81 and a ball hinge hole located on the positioning plane 81. The hinge ball 33 is embedded in the ball hinge hole and forms a ball hinge with the connecting plate 8. A driving assembly is provided between the side plate 3 and the connecting plate 8. The driving assembly is used to drive the connecting plate 8 to rotate around a first axis and a second axis passing through the center of the hinge ball 33, and to limit the rotation of the connecting plate 8 around the first axis and the second axis. The first axis and the second axis are perpendicular to each other and parallel to the connecting plane 32. The connecting plate 8 is provided with a fixing hole for fixing the laser.

[0040] The fixing holes on the connecting plate 8 are also threaded holes, so that the laser can be fixed to the connecting plate 8 by bolts and fixing holes. In the design, the connecting plate 8 can be rotated so that the positioning plane 81 is parallel to the connecting plane 32.

[0041] Reference Figure 3-4 As shown, specifically, to realize the function of driving the connecting plate 8 to rotate and restricting the rotation of the connecting plate 8, the driving component includes two first adjusting bolts 9 and two second adjusting bolts 10. The first adjusting bolts 9 are threadedly mounted on the side plate 3 and their axes are perpendicular to the connecting plane 32. The two first adjusting bolts 9 are distributed on both sides of the hinge ball 33 along the second axis direction, and the axes of the first adjusting bolts 9 intersect with the second axis. One end of the first adjusting bolt 9 is in contact with the positioning plane 81 of the connecting plate 8. The second adjusting bolts 10 are threadedly mounted on the side plate 3 and their axes are perpendicular to the connecting plane 32. The two second adjusting bolts 10 are distributed on both sides of the hinge ball 33 along the first axis direction, and the axes of the second adjusting bolts 10 intersect with the first axis. One end of the second adjusting bolt 10 is in contact with the positioning plane 81 of the connecting plate 8.

[0042] Reference Figure 3-4As shown, in actual operation, by turning the two first adjusting bolts 9, one of them moves closer to the connecting plate 8, while the other moves away from the connecting plate 8, and both first adjusting bolts 9 are always in contact with the positioning plane 81. With the cooperation of the two first adjusting bolts 9, the connecting plate 8 can be driven to rotate around an axis perpendicular to the line connecting the two first adjusting bolts 9 and perpendicular to the connecting plane 32, that is, rotate around the first axis. Similarly, by turning the two second adjusting bolts 10, one of them moves closer to the connecting plate 8, while the other moves away from the connecting plate 8, and both second adjusting bolts 10 are always in contact with the positioning plane 81, the connecting plate 8 can be driven to rotate around an axis perpendicular to the line connecting the two second adjusting bolts 10 and perpendicular to the connecting plane 32. Since the first axis and the second axis are perpendicular to each other, the connecting plate 8 can rotate relative to the side plate 3 in three-dimensional space, thereby adjusting the relative angle and position between the positioning plane 81 of the connecting plate 8 and the connecting plane 32 of the side plate 3. This allows for adjusting the angle of the laser on the connecting plate 8 relative to the side plate 3, giving the laser a wider angle adjustment range so that the laser angle can be adjusted to the designed test angle. This improves the applicability of the fixture and meets the fixing and positioning requirements of various laser vibration testing operations.

[0043] In this embodiment, both the first adjusting bolt 9 and the second adjusting bolt 10 pass through the side plate 3. Due to the interference of the first adjusting bolt 9 and the second adjusting bolt 10, the side plate 3 cannot be in contact with the vibration test table surface. Therefore, connecting plates 8 are only provided on two of the side plates 3, while the other two side plates 3 can still be in contact with the vibration test table surface and are pressed and fixed by the clamping rod 1. The position and angle of the positioning box 4 on the vibration test table can still be adjusted to adjust the test angle of the laser, thereby making the adjustment range of the laser test angle larger.

[0044] Furthermore, the end faces of the first adjusting bolt 9 and the second adjusting bolt 10 that contact the positioning plane 81 are both convex spherical surfaces, in order to reduce the contact area between the first adjusting bolt 9 and the second adjusting bolt 10, so that the connecting plate 8 can rotate smoothly around the first axis and the second axis.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixture for reliability testing of semiconductor-pumped lasers, characterized in that, include: A fixing assembly includes a clamping rod (1) and a connecting structure, the connecting structure being connected to the connecting rod and used to connect the clamping rod (1) to a vibration test bench; The positioning device includes two base plates (2) and four side plates (3). The two base plates (2) are parallel to each other, and the side plates (3) are perpendicular to the base plates (2). The two base plates (2) and the four side plates (3) are spliced ​​together to form a cuboid positioning box (4). The two base plates (2) and the four side plates (3) form the six side walls of the positioning box (4). The adjacent side walls of the positioning box (4) are connected by bolts. The positioning box (4) is used to accommodate a laser. Each side wall of the positioning box (4) is provided with mounting holes (41) for fixing the laser, which is suitable for fixing the laser to the side wall of the positioning box (4) by bolts. When the clamping rod (1) is connected to the vibration test bench through the connecting structure, the positioning box (4) is placed on the vibration test bench surface and located between the clamping rod (1) and the vibration test bench surface, and the positioning box (4) is pressed and fixed on the vibration test bench by the clamping rod (1).

2. The fixture for reliability testing of semiconductor-pumped lasers according to claim 1, characterized in that: The connection structure includes two connecting screws (6), which are respectively connected to both ends of the clamping rod (1). The axis of the connecting screw (6) is perpendicular to the axis of the clamping rod (1). One end of the connecting screw (6) is used to connect to the vibration test bench, and the other end passes through the clamping rod (1) and is connected to a limiting nut (7). It is suitable for limiting the movement of the clamping rod (1) away from the vibration test bench by the limiting nut (7) when the positioning device is pressed and fixed on the vibration test bench by the clamping rod (1).

3. The fixture for reliability testing of semiconductor-pumped lasers according to claim 2, characterized in that: The clamping rod (1) includes a clamping plane. The axis of the connecting screw (6) is perpendicular to the clamping plane. When the clamping rod (1) is connected to the vibration test bench through the connecting screw (6), the clamping plane is parallel to the vibration test bench surface and faces the vibration test bench surface.

4. The fixture for reliability testing of semiconductor-pumped lasers according to claim 1, characterized in that: Of the four side plates (3), two adjacent side plates (3) are connected to a connecting plate (8) located inside the positioning box (4). The side of the side plate (3) facing the inside of the positioning box (4) is a connecting plane (32). A hinge ball (33) is connected to the connecting plane (32). The connecting plate (8) includes a positioning plane (81). The connecting plate (8) is provided with a ball hinge hole located on the positioning plane (81). The hinge ball (33) is embedded in the ball hinge hole and forms a ball hinge with the connecting plate (8). A driving assembly is provided between the side plate (3) and the connecting plate (8). The driving assembly is used to drive the connecting plate (8) to rotate around a first axis and a second axis passing through the center of the hinge ball (33), and to limit the rotation of the connecting plate (8) around the first axis and the second axis. The first axis and the second axis are perpendicular to each other and parallel to the connecting plane (32). The connecting plate (8) is provided with a fixing hole for fixing the laser.

5. The fixture for reliability testing of semiconductor-pumped lasers according to claim 1, characterized in that, The driving component includes: Two first adjusting bolts (9) are threaded onto the side plate (3) and their axes are perpendicular to the connecting plane (32). The two first adjusting bolts (9) are distributed on both sides of the hinge ball (33) along the second axis direction, and the axes of the first adjusting bolts (9) intersect the second axis. One end of the first adjusting bolt (9) is in contact with the positioning plane (81) of the connecting plate (8). Two second adjusting bolts (10) are threaded onto the side plate (3) and their axes are perpendicular to the connecting plane (32). The two second adjusting bolts (10) are distributed on both sides of the hinge ball (33) along the first axis direction, and the axes of the second adjusting bolts (10) intersect the first axis. One end of the second adjusting bolt (10) is in contact with the positioning plane (81) of the connecting plate (8).

6. The fixture for reliability testing of semiconductor-pumped lasers according to claim 5, characterized in that: The end faces of the first adjusting bolt (9) and the second adjusting bolt (10) that contact the positioning plane (81) are both convex spherical surfaces.

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