Clamp for optical module test and optical module test equipment

Abstract

The embodiment of the utility model provides a clamp for testing an optical module and optical module testing equipment. The clamp comprises a shell; the temperature control assembly is arranged in the shell; the limiting structure is arranged corresponding to the temperature control assembly, the limiting structure is provided with an inserting cavity and a mounting cavity communicated with the inserting cavity, and the inserting cavity is used for inserting a to-be-measured optical module; the temperature detection assembly is arranged in the mounting cavity and comprises a driving structure and a temperature detection piece, the temperature detection piece is arranged on the side, close to the inserting cavity, of the mounting cavity, and the driving structure is in transmission connection with the side, away from the inserting cavity, of the temperature detection piece; the driving structure is used for providing driving force to drive the temperature detection piece to move towards the direction close to the insertion cavity so as to abut against the optical module; the limiting structure further comprises a fixing groove formed in the peripheral side of the mounting cavity, the driving structure is further provided with a fixing piece, and the driving structure is fixed to the mounting cavity through adaptive mounting of the fixing piece and the fixing groove.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the technical field of bit error meters, and particularly relate to a fixture for optical module testing and an optical module testing device. Background Art

[0002] Optical module test equipment can be used to test the performance of optical modules of different package types in various environments. For example, optical module test equipment is used to test the bit error performance and eye diagram quality of 400G / 800G optical modules in high and low temperature environments. It also supports optical module package types such as QSFP-DD, OSFP, QSFP112, and QSFP56. Typically, during optical module testing, a cylinder-driven temperature sensor is used to collect the module's temperature and then adjust the temperature accordingly.

[0003] However, the existing temperature detection component and cylinder need to be fixed with the help of a cylinder bracket. The cylinder bracket requires high processing precision and assembly precision. The assembly process is cumbersome and not conducive to subsequent equipment maintenance.

[0004] Therefore, how to solve the above problems has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide a fixture for optical module testing and an optical module testing device.

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided a fixture for testing an optical module, comprising: a housing;

[0007] a temperature control component, disposed in the housing;

[0008] A limiting structure is provided corresponding to the temperature control component, wherein the limiting structure is provided with an insertion cavity and a mounting cavity communicating with the insertion cavity, wherein the insertion cavity is used to insert the optical module to be measured;

[0009] a temperature detection component provided in the mounting cavity, the temperature detection component comprising a drive structure and a temperature detection member, the temperature detection member being provided on a side of the mounting cavity close to the insertion cavity, the drive structure being transmission-connected to a side of the temperature detection member facing away from the insertion cavity; the drive structure being configured to provide a driving force to drive the temperature detection member to move toward the insertion cavity so as to abut against the optical module;

[0010] The limiting structure further includes a fixing groove provided on the peripheral side of the installation cavity, and the driving structure is further provided with a fixing member, wherein the driving structure is fixed to the installation cavity by the adaptive installation of the fixing member and the fixing groove.

[0011] Optionally, the fixing member includes a nut; and a thread is provided at a position of the driving structure corresponding to the fixing member, wherein the driving structure is fixed to the installation cavity by connection between the nut and the thread.

[0012] Optionally, the temperature detecting member includes a lead-out member and a contact with an accommodating space, as well as a temperature sensor and a sealing plug arranged in the accommodating space; the sealing plug is used to seal the temperature sensor in the accommodating space, and one end of the lead-out member is passed through the contact and connected to the temperature sensor in the accommodating space.

[0013] Optionally, the temperature detection component further includes a plug, which is used to encapsulate the temperature sensor and the sealing plug in the contact.

[0014] Optionally, a first limiting ring is provided at one end of the installation cavity close to the insertion cavity, and a limiting boss is provided on the periphery of the contact; the temperature detection component also includes an elastic reset member, which is compressed and arranged between the limiting boss and the first limiting ring.

[0015] Optionally, there are multiple limiting bosses, and the multiple limiting bosses are arranged at intervals around the outer circumference of the contact.

[0016] Optionally, the driving structure includes a cylinder, a piston rod of the cylinder abuts against the temperature detection component; the cylinder is used to push the temperature detection component to move toward the insertion cavity in the installation cavity, and the elastic reset component is used to provide a reset elastic force to reset the temperature detection component.

[0017] Optionally, a second limiting ring is provided on the side of the first limiting ring in the installation cavity away from the insertion cavity, and the second limiting ring is used to abut against the limiting boss to limit the movement stroke of the temperature detection component in the installation cavity.

[0018] Optionally, the driving structure includes a cylinder, a piston rod of the cylinder is fixedly connected to the temperature detecting component, and the cylinder is used to drive the temperature detecting component to move telescopically in the installation cavity.

[0019] According to a second aspect of the embodiments of the present disclosure, an optical module testing device is provided, comprising a test box and the aforementioned fixture for optical module testing; the fixture for optical module testing is detachably connected to the test box.

[0020] The beneficial effects of the embodiments of the present disclosure include:

[0021] In the present disclosure, a mounting cavity is provided on a position-limiting structure, and a temperature detection component and a driving structure in a transmission connection are sequentially installed in the mounting cavity. The driving structure is fixed to the mounting cavity by means of a fixing member and a fixing groove. With this arrangement, there is no need for an existing bracket to pre-fix the temperature detection component and the driving structure. Instead, the temperature detection component is directly set in the mounting cavity, which has the characteristic of a simple temperature detection component assembly structure. In addition, since both the temperature detection component and the driving structure are installed in the mounting cavity, the coaxiality of the temperature detection component and the driving structure can be guaranteed, thereby ensuring installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a fixture for optical module testing according to an embodiment of the present disclosure;

[0023] Figure 2 This is a schematic structural diagram of a fixture for optical module testing according to an embodiment of the present disclosure, which illustrates the positional relationship between the temperature control component and the limiting structure;

[0024] Figure 3 for Figure 2 A partial structural enlarged schematic diagram;

[0025] Figure 4 for Figure 1 Structural cross-sectional view obtained along A1-A2; Figure 3 Further structural enlargement diagram;

[0026] Figure 5 for Figure 4 A magnified schematic diagram of the structure of part B;

[0027] Figure 6 for Figure 5 A further structural enlarged schematic diagram of ;

[0028] Figure 7 The figure is a schematic structural diagram of an optical module testing device according to an embodiment of the present disclosure.

[0029] In the figure, 1. optical module test equipment; 10. fixture; 11. shell; 12. temperature control component; 13. limiting structure; 14. temperature detection component; 15. test box; 131. insertion cavity; 132. installation cavity; 133. fixing groove; 141. driving structure; 142. temperature detection component; 143. fixing component; 144. elastic reset component; 1421. contact; 1422. temperature sensor; 1423. sealing plug; 1424. lead-out component; 1425. plug; 1311. first limiting ring platform; 1312. second limiting ring platform; 14211. limiting boss. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0031] The following is a further detailed description of the embodiments of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions and drawings of the following examples are used to illustrate the principles of the present application, but are not used to limit the scope of the present application, that is, the present application is not limited to the described embodiments. In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "multiple" is more than two; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not perpendicular in the strict sense, but is within the allowable error range. "Parallel" is not parallel in the strict sense, but is within the allowable error range.

[0032] It should also be noted that, in the description of this application, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0033] like Figure 1-6 As shown, a fixture 10 for testing optical modules includes a housing 11, a temperature control assembly 12, a retaining structure 13, and a temperature detection assembly 14. The temperature control assembly 12 is disposed within the housing 11, and the retaining structure 13 is disposed corresponding to the temperature control assembly 12. The retaining structure 13 is provided with an insertion cavity 131 and a mounting cavity 132 connected to the insertion cavity 131. The insertion cavity 131 is used to insert the optical module to be tested.

[0034] The temperature detection component 14 is arranged in the installation cavity 132, and the temperature detection component 14 includes a driving structure 141 and a temperature detection component 142. The temperature detection component 142 is arranged on the side of the installation cavity 132 close to the insertion cavity 131. The driving structure 141 is transmission-connected to the side of the temperature detection component 142 away from the insertion cavity 131. The driving structure 141 is used to provide driving force to drive the temperature detection component 142 to move toward the direction close to the insertion cavity 131 to abut against the optical module.

[0035] The limiting structure 13 further includes a fixing groove 133 provided on the peripheral side of the installation cavity 132 , and the driving structure 141 is further provided with a fixing member 143 , wherein the driving structure 141 is fixed to the installation cavity 132 by the adaptive installation of the fixing member 143 and the fixing groove 133 .

[0036] In the present disclosure, by providing a mounting cavity 132 on the limiting structure 13, the temperature detecting member 142 and the driving structure 141 of the transmission connection are sequentially installed in the mounting cavity 132, and the driving structure 141 is fixed to the mounting cavity 132 by adapting the fixing member 143 and the fixing groove 133. With this arrangement, there is no need for the existing bracket to pre-fix the temperature detecting member 142 and the driving structure 141. Instead, the temperature detecting component 14 is directly set in the mounting cavity 132, which has the characteristic of a simple assembly structure of the temperature detecting component 14. In addition, since the temperature detecting member 142 and the driving structure 141 are both installed in the mounting cavity 132, the coaxiality of the temperature detecting member 142 and the driving structure 141 can be guaranteed, thereby ensuring the installation accuracy.

[0037] In some embodiments, the fixing member 143 is a nut, and a thread is provided at a position of the driving structure 141 corresponding to the fixing member 143 , wherein the driving structure 141 is fixed to the installation cavity 132 through the connection between the nut and the thread.

[0038] In one specific embodiment, the installation process of the drive structure 141 includes: first bonding the nut into the fixing groove 133, then threading the drive structure 141 and the nut together and fixing them in the installation cavity 132, and then drivingly connecting one end of the fixed drive structure 141 to the temperature detection member 142. It is understood that the method of fixing the nut in the fixing groove 133 includes but is not limited to bonding.

[0039] In the present disclosure, the combination of the nut and thread provides a reliable mechanical locking force, ensuring that the drive structure 141 will not loosen due to vibration or external forces during operation, thereby improving the stability and reliability of the entire system. In addition, if the position of the drive structure 141 needs to be adjusted or maintenance is required, it is simply necessary to loosen the nut. This design makes installation, removal, and fine-tuning the position simple and quick.

[0040] In some embodiments, the temperature detection member 142 includes a lead-out member 1424 and a contact 1421 having a receiving space, as well as a temperature sensor 1422 and a sealing plug 1423 disposed within the receiving space. The sealing plug 1423 is used to seal the temperature sensor 1422 within the receiving space. One end of the lead-out member 1424 is passed through the contact 1421 and connected to the temperature sensor 1422 within the receiving space. In some embodiments, the temperature sensor 1422 is coated with thermal grease and inserted into the receiving space of the contact 1421, and the sealing plug 1423 is used to seal the temperature sensor 1422. The contact 1421 is used to directly contact the optical module within the insertion cavity 131. The heat generated by the optical module is transferred to the temperature sensor 1422 through the contact 1421 and the thermal grease. The temperature sensor 1422 then outputs a temperature signal to the control unit via the lead-out member 1424.

[0041] In some embodiments, the sealing plug 1423 is a silicone plug.

[0042] In some embodiments, the temperature detection component 142 further includes a plug 1425 , which is used to encapsulate the temperature sensor 1422 and the sealing plug 1423 within the contact 1421 .

[0043] In some embodiments, a first limiting ring 1311 is provided at one end of the mounting cavity 132 near the insertion cavity 131, and a limiting boss 14211 is provided on the periphery of the contact 1421. The temperature detection assembly 14 also includes an elastic return member 144, which is compressed and disposed between the limiting boss 14211 and the first limiting ring 1311.

[0044] In a specific example, the limiting boss 14211 is arranged at one end of the contact 1421 away from the insertion cavity 131, the elastic return member 144 is a spring, the spring is sleeved on the contact 1421, and one end of the spring abuts against the first limiting ring 1311, and the other end abuts against the limiting boss 14211.

[0045] When installing the temperature sensing assembly 14, first place the spring into the mounting cavity 132, then place the temperature sensing member 142 into the mounting cavity 132. The end of the contact 1421 of the temperature sensing member 142, which is closer to the insertion cavity 131, penetrates the spring and abuts against the end of the spring facing away from the insertion cavity 131 via the limiting boss 14211. When the drive structure 141 is fixed to the mounting cavity 132, the spring is in a compressed state, providing a predetermined return force.

[0046] When the temperature sensing assembly 14 measures the temperature of the optical module in the insertion cavity 131, the temperature sensing member 142, driven by the driving force of the drive structure 141, moves within the installation cavity 132 toward the insertion cavity 131, continuously compressing the spring. This allows the temperature sensing member 142 to extend into the insertion cavity 131, contact the optical module, and measure the temperature. When the temperature sensing member 142 completes the temperature measurement, the spring returns the temperature sensing member 142 to its initial position.

[0047] In the present disclosure, the function of the elastic reset member 144 is to automatically restore the contact 1421 to its original state after it is subjected to pressure, thereby maintaining good contact between the contact 1421 and the contact surface, and ensuring the stability of the circuit connection and the accuracy of temperature detection. If it is necessary to replace the contact 1421 or repair other related components of the temperature detection member 142, this design makes disassembly and reassembly simpler and more direct, reducing maintenance costs and time. Furthermore, due to the presence of a certain buffer mechanism (i.e., the elastic reset member 144), it helps to absorb the impact force that may be generated during operation, thereby extending the working life of the entire device.

[0048] In some embodiments, there are multiple limiting bosses 14211, and the multiple limiting bosses 14211 are arranged at intervals around the periphery of the contact 1421. It is understandable that the multiple limiting bosses 14211 are arranged around the periphery of the contact 1421 at equal or unequal intervals.

[0049] In the present disclosure, multiple limiting bosses 14211 can ensure that the contact 1421 can be supported and positioned in all directions, so that the force on the contact 1421 in the installation cavity 132 is more uniform, reducing local stress concentration, and improving the stability and durability of the structure. When the elastic reset member 144 acts between the multiple limiting bosses 14211, it can provide a more uniform and stable reset force, significantly improving the reset performance of the contact 1421, and reducing the wear that may be caused by long-term pressure on a single position. Furthermore, the multiple limiting bosses 14211 provide more reference points, making it easier to align during the assembly process, simplifying the assembly process, and also helping to improve production efficiency.

[0050] In some embodiments, the driving structure 141 includes a cylinder, the piston rod of the cylinder abuts against the temperature detection component 142, the cylinder is used to push the temperature detection component 142 to move toward the insertion cavity 131 in the installation cavity 132, and the elastic reset component 144 is used to provide a reset elastic force to reset the temperature detection component 142.

[0051] In the present disclosure, the cylinder can provide a stable and controllable driving force, so that the temperature detection member 142 can move according to a preset speed and force. The elastic reset member 144 can quickly bounce the temperature detection member 142 back to its initial position after the cylinder stops working, ensuring that the contact 1421 is in the correct position before each measurement, thereby improving repeatability and consistency. Furthermore, the combined use of cylinder push and spring reset is relatively simple and direct, reducing the need for complex mechanical structures, thereby reducing design difficulty and manufacturing costs. The pressure of the cylinder can be adjusted by adjusting the air supply pressure, which enables the design to adapt to different load requirements and working environments. At the same time, the elastic reset member 144 can select appropriate spring parameters according to specific needs to achieve the best reset effect. Furthermore, due to the presence of the cylinder drive and elastic reset mechanism, the friction loss of the temperature detection member 142 during movement can be effectively reduced, thereby extending the service life of the entire system.

[0052] In a specific example provided by the present disclosure, the cylinder is a pen-shaped cylinder.

[0053] In some embodiments, a second limiting ring 1312 is further provided on the side of the first limiting ring 1311 in the installation cavity 132 facing away from the insertion cavity 131. The second limiting ring 1312 is used to abut against the limiting boss 14211 to limit the moving stroke of the temperature detection component 142 in the installation cavity 132.

[0054] In the present disclosure, when the temperature detection component 14 is working, the second limiting ring 1312 can abut against the limiting boss 14211, thereby preventing the temperature detection component 142 from continuing to move toward the insertion cavity 131, thereby limiting the length of the temperature detection component 142 extending into the insertion cavity 131, and avoiding damage to the optical module caused by the temperature detection component 142.

[0055] In other embodiments, the driving structure 141 includes a cylinder, a piston rod of the cylinder is fixedly connected to the temperature detection component 142 , and the cylinder is used to drive the temperature detection component 142 to move telescopically in the installation cavity 132 .

[0056] In the present disclosure, the cylinder can achieve precise control of the extension and retraction of the piston rod by adjusting the air pressure, thereby achieving precise adjustment of the position of the temperature detection part 142, and ensuring the positioning accuracy of the temperature detection part 142. Compared with some mechanical or electric drive methods, the pneumatic system usually has a faster response speed and can complete rapid motion conversion in a short time, which is suitable for situations where the position of the detection point needs to be changed quickly. Furthermore, the cylinder provides a uniform and stable push-pull force, which helps to ensure that the temperature detection part 142 maintains good stability during the entire movement process and reduces the adverse effects that vibration or impact may have on it. Further, by adjusting the air supply pressure, the power output of the cylinder can be easily changed, so that the design can adapt well to changes in demand under different working conditions. And compared with complex mechatronic devices, the structure of the pneumatic system is relatively simple and the number of parts is relatively small, so daily maintenance and troubleshooting are relatively easy to carry out.

[0057] In some embodiments, reference Figure 7 The present disclosure provides an optical module testing device 1, which includes a test box 15 and a fixture 10 for optical module testing. The fixture 10 for optical module testing is detachably connected to the test box 15.

[0058] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A fixture for optical module testing, characterized in that: The fixture comprises: case; a temperature control component, disposed in the housing; A limiting structure is provided corresponding to the temperature control component, wherein the limiting structure is provided with an insertion cavity and a mounting cavity communicating with the insertion cavity, wherein the insertion cavity is used to insert the optical module to be measured; a temperature detection component provided in the mounting cavity, the temperature detection component comprising a drive structure and a temperature detection member, the temperature detection member being provided on a side of the mounting cavity close to the insertion cavity, the drive structure being transmission-connected to a side of the temperature detection member facing away from the insertion cavity; the drive structure being configured to provide a driving force to drive the temperature detection member to move toward the insertion cavity so as to abut against the optical module; The limiting structure further includes a fixing groove provided on the peripheral side of the installation cavity, and the driving structure is further provided with a fixing member, wherein the driving structure is fixed to the installation cavity by the adaptive installation of the fixing member and the fixing groove.

2. The fixture for optical module testing according to claim 1, characterized in that: The fixing member includes a nut; the driving structure is provided with a thread at a position corresponding to the fixing member, wherein the driving structure is fixed to the installation cavity through the connection between the nut and the thread.

3. The fixture for optical module testing according to claim 1, wherein: The temperature detection component includes a lead-out component and a contact with an accommodating space, as well as a temperature sensor and a sealing plug arranged in the accommodating space; the sealing plug is used to seal the temperature sensor in the accommodating space, and one end of the lead-out component is passed through the contact and connected to the temperature sensor in the accommodating space.

4. The fixture for optical module testing according to claim 3, wherein: The temperature detection component further includes a plug, which is used to encapsulate the temperature sensor and the sealing plug in the contact.

5. The fixture for optical module testing according to claim 3, wherein: A first limiting ring is provided at one end of the installation cavity close to the insertion cavity, and a limiting boss is provided on the periphery of the contact; the temperature detection component also includes an elastic reset member, which is compressed and arranged between the limiting boss and the first limiting ring.

6. The fixture for optical module testing according to claim 5, characterized in that: There are multiple limiting bosses, and the multiple limiting bosses are arranged at intervals around the outer circumference of the contact.

7. The fixture for optical module testing according to claim 5, characterized in that: The driving structure includes a cylinder, a piston rod of which abuts against the temperature detecting component; the cylinder is used to push the temperature detecting component to move toward the insertion cavity in the installation cavity, and the elastic reset component is used to provide a reset elastic force to reset the temperature detecting component.

8. The fixture for optical module testing according to claim 5, characterized in that: A second limiting ring is further provided on the side of the first limiting ring in the installation cavity away from the insertion cavity. The second limiting ring is used to abut against the limiting boss to limit the movement stroke of the temperature detection component in the installation cavity.

9. The fixture for optical module testing according to claim 1, wherein: The driving structure includes a cylinder, a piston rod of the cylinder is fixedly connected to the temperature detecting component, and the cylinder is used to drive the temperature detecting component to move telescopically in the installation cavity.

10. An optical module testing device, characterized in that: The optical module testing equipment includes a test box and a fixture for optical module testing according to any one of claims 1 to 9; the fixture for optical module testing is detachably connected to the test box.

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