Unlocking function detection device and detection method thereof

Abstract

The invention discloses an unlocking function detection device and method, and the device is used for the detection of an unlocking part on an optical module, and comprises a detection tool which is provided with a cavity for the insertion of the optical module; the limiting piece is arranged in the cavity; wherein the optical module is inserted into the cavity to form a conduction circuit, and the unlocking function of the optical module is judged by detecting the resistance value between the unlocking piece and the limiting piece; according to the invention, the optical module can complete the module size test in the test process instead of an independent process, thereby saving the production time, reducing the use of a test cage, saving the cost of the cage, preventing the surface of the module from being scratched by the cage, and increasing the reject ratio of the module. Therefore, the testing accuracy is ensured, the manual operation is reduced, the automatic testing of the size is realized, and the efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical module unlocking detection, and in particular to an unlocking function detection device and a detection method thereof. Background Art

[0002] With the rapid development of the optical communication field, the use of optical modules is increasing, and the demand has grown very rapidly in recent years.

[0003] The height dimension of the unlocking part of the optical module involves the combination of the base, the pull ring, and the unlocking part. Each part has a tolerance in processing, and the pull ring is a sheet metal part with a bending process. The size after assembly needs to be controlled to meet the requirements of the protocol.

[0004] The protocol requires that the height of the optical module unlocking piece protrusion be limited to a certain range. If the size is too high, the module will be locked in the cage and cannot be pulled out by unlocking. If the height is too small, it cannot be locked in the equipment cage. The existing solution directly uses the cage for detection, which has the following defects: First, the cage is made of sheet metal, which will have fatigue problems, resulting in dimensional deformation and inaccurate detection; second, the edge of the sheet metal at the cage tongue position will scratch the module, increasing the defect of production test. Summary of the invention

[0005] The main purpose of the present invention is to provide an unlocking function detection device and a detection method thereof, aiming to solve the existing technical problems.

[0006] To achieve the above object, the present invention provides an unlocking function detection device for detecting an unlocking member on an optical module, comprising:

[0007] A test fixture having a cavity for inserting the optical module;

[0008] A limiting member, disposed in the cavity;

[0009] The optical module is inserted into the cavity to form a conducting circuit, and the resistance value between the unlocking member and the limiting member is detected to determine the unlocking function of the optical module.

[0010] Furthermore, the limit member is connected to a multimeter via a wire, and the multimeter transmits the value to a host computer to perform a size detection on the unlocking member.

[0011] Furthermore, a portion of the upper area of ​​the limiter is electroplated, and a portion in contact with the gauge is non-conductive.

[0012] Furthermore, the limiting member is limited in a groove provided on the inspection tool, an elastic member having one end connected to the limiting member is provided in the groove, and the other end of the elastic member is connected to the stopper.

[0013] Furthermore, it also includes a guide plate, a sliding member is provided at the bottom of the guide plate, and the sliding member is movably embedded in the L-shaped guide groove. During the insertion process of the optical module, the end portion of the optical module presses against the guide plate and enters the inspection fixture in a horizontal posture.

[0014] Furthermore, the guide plate is of a concave structure, and one end of the guide plate is sealed and the other end is open, and the initial position of the guide plate extends forward to the outside of the inspection fixture.

[0015] Furthermore, the sliding member includes an upper block and a lower block, the upper block and the lower block are connected by a spring, a magnetic attraction area is provided on the surface of the upper block, and a power supply area is provided on the surface of the lower block for supplying power to the magnetic attraction area, when the upper block and the lower block are in contact, the magnetic attraction area generates a magnetic attraction force, and the upper block and the lower block can slide in the L-shaped guide groove.

[0016] Furthermore, the limiting member is movably arranged in the groove, and an adjuster is provided at the end of the limiting member for adjusting the position of the limiting member.

[0017] Furthermore, a test board is included, which is used to supply power to the optical module and provide an interface for the optical module to communicate with a host computer.

[0018] A method for detecting an unlocking function, using the detection device as described above, specifically comprises the following steps:

[0019] Insert the optical module into the cavity for the first time during the initial test and read the resistance value of the multimeter. If the resistance value is greater than 20MΩ, an alarm will be prompted and the screen will display "size NG". If the resistance value is less than 10Ω, no alarm will be prompted and the screen will display "size OK".

[0020] Insert the optical module into the cavity for the second time during the final test and read the resistance value of the multimeter. If the resistance value is less than 10Ω, an alarm will be prompted and the screen will display "size NG". If the resistance value is infinite, no alarm will be prompted and the screen will display "size OK".

[0021] The beneficial effects of the present invention are embodied in:

[0022] In the present invention, the optical module can complete the module size test during the test process instead of a separate process, thereby saving production time, reducing the use of test cages, saving cage costs, and preventing the cage from scratching the module surface and increasing the module defect rate. The accuracy of the test is guaranteed, and the human operation is reduced, and the automatic size test is realized, which improves the efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the optical module and the unlocking member of the present invention;

[0024] Figure 2It is a schematic diagram of the structure of the detection device of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the end portion of the inspection tool of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the guide plate of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the detection device during initial testing of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the detection device during final measurement of the present invention.

[0029] Description of reference numerals:

[0030] 100, optical module; 101, unlocking piece; 102, groove; 200, inspection fixture; 201, cavity; 202, guide plate; 203, sliding piece; 2031, upper block; 2032, lower block; 2033, spring; 2034, magnetic attraction area; 2035, power supply area; 204, L-shaped guide groove; 300, limit piece; 301, elastic piece; 302, stopper; 400, test board. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-3 The present invention provides an unlocking function detection device for detecting an unlocking member 101 on an optical module 100, comprising:

[0033] A check fixture 200 having a cavity 201 for inserting the optical module 100;

[0034] The limiting member 300 is disposed in the cavity 201;

[0035] The optical module 100 is inserted into the cavity 201 to form a conducting circuit, and the resistance value between the unlocking member 101 and the limiting member 300 is detected to determine the unlocking function of the optical module 100 .

[0036] The present invention utilizes the metal conductivity of the optical module housing, see Figure 5During the initial test, the unlocking part 101 of the qualified module is required to contact the limit part 300, which means that the height dimension is greater than the lower limit value (minimum value) required by the protocol. The limit part 300 is connected to the multimeter through a wire, and the multimeter transmits the value to the host computer, thereby realizing the function of detecting the lower limit value (minimum value) of the dimension.

[0037] See also Figure 6 During the final test, it is required that the unlocking part 101 of the qualified module cannot contact the limiting part 300. The limiting part 300 is connected to the multimeter through a wire. The multimeter transmits the value to the host computer, and the unlocking part 101 realizes the function of detecting the upper limit value (maximum value) of the size.

[0038] The present invention detects the height size of the unlocking part 101 of the optical module housing through two tests, namely, initial adjustment and final test of the contact limit part 300 and the non-contact limit part 300, which can eliminate the influence of metal fatigue of the squirrel cage sheet metal tongue and the influence of scratches on the optical module housing, ensure the effectiveness of the unlocking function detection, and save the cost increase caused by replacing the squirrel cage.

[0039] The optical module of the present invention can complete the module size test during the test process instead of a separate process, thereby saving production time, reducing the use of test cages, saving cage costs, and preventing the cage from scratching the module surface and increasing the module defect rate. The accuracy of the test is guaranteed, and the human operation is reduced, and the automatic size test is realized, which improves the efficiency.

[0040] In one embodiment, the position-limiting member 300 is connected to a multimeter via a wire, and the multimeter transmits the value to a host computer to perform a size detection on the unlocking member 101 .

[0041] In one embodiment, part of the upper area of ​​the stopper 300 is electroplated, and the part in contact with the gauge 200 is non-conductive. In this embodiment, if the unlocking member 101 contacts the stopper 300, a conducting circuit is formed, and resistance can be read by a multimeter.

[0042] In one embodiment, see Figure 3 The limiting member 300 is limited in the groove 102 provided on the inspection fixture 200. An elastic member 301 is provided in the groove 102, one end of which is connected to the limiting member 300, and the other end of the elastic member 301 is connected to the stopper 302. In this embodiment, the limiting member 300 can have a certain range of motion through the setting of the elastic member 301, so as to avoid hard contact when the unlocking member 101 contacts the limiting member 300, which may cause the unlocking member 101 to be damaged.

[0043] In one embodiment, see Figure 4, and also includes a guide plate 202, a sliding member 203 is provided at the bottom of the guide plate 202, and the sliding member 203 is movably embedded in the L-shaped guide groove 204. During the insertion process of the optical module 100, the end portion of the optical module 100 is against the guide plate 202 and enters the inspection fixture 200 in a horizontal posture.

[0044] The present embodiment is configured such that, when the unlocking member 101 is inspected, the optical module 100 is first placed on the guide plate 202 so that the end of the optical module 100 is against the guide plate 202, and the optical module 100 is inserted into the inspection fixture 200 in a horizontal posture, so that the optical module 100 maintains a horizontal posture throughout the insertion process, thereby reducing the risk of the optical module 100 being scratched during insertion and reducing the difficulty of operation.

[0045] In one embodiment, see Figure 4 The guide plate 202 is a concave structure, and one end of the guide plate 202 is sealed and the other end is open. The initial position of the guide plate 202 extends to the outside of the inspection fixture 200. This embodiment is configured so that the end of the optical module 100 can be placed in the guide plate 202, and the optical module 100 is inserted into the inspection fixture 200 for guidance, so that the optical module 100 enters the inspection fixture 200 in a horizontal posture. At the same time, the initial position of the guide plate 202 extends to the outside of the inspection fixture 200, which makes it easy for the inspection personnel to easily dock the end of the optical module 100 with the guide plate 202, reducing the difficulty of operation.

[0046] Specifically, the inner space of the guide plate 202 is adapted to the size of the optical module 100 , and a rubber layer is attached to the inner wall.

[0047] In one embodiment, see Figure 4 The sliding member 203 includes an upper block 2031 and a lower block 2032, and the upper block 2031 and the lower block 2032 are connected by a spring 2033. A magnetic attraction area 2034 is provided on the surface of the upper block 2031, and a power supply area 2035 for supplying power to the magnetic attraction area 2034 is provided on the surface of the lower block 2032. When the upper block 2031 and the lower block 2032 are attached to each other, the magnetic attraction area 2034 generates a magnetic attraction force, and the upper block 2031 and the lower block 2032 can slide in the L-shaped guide groove 204.

[0048] This embodiment is configured as follows: after the end of the optical module 100 is placed in the guide plate 202, the guide plate 202 is pressed downward so that the upper block 2031 compresses the spring 2033 until it contacts the lower block 2032, and the power supply area 2035 fits with the magnetic area 2034. The magnetic area 2034 is powered to generate an adsorption force, and the end of the optical module 100 is adsorbed and positioned on the guide plate 202, and the optical module 100 is further driven to maintain a horizontal posture, and then the optical module 100 is pushed into the inspection fixture 200. During the process, the upper block 2031 and the lower block 2032 always keep in contact. The optical module 100 is in the state of being inserted, and during the insertion process, it slides along the horizontal section of the L-shaped guide groove 204 until it reaches the bottom. The magnetic attraction area 2034 also always maintains the adsorption force on the optical module 100 to ensure the stability of the optical module 100 during the movement. After the detection is completed, the guide plate 202 is pulled outward to the starting end of the horizontal section of the L-shaped guide groove 204 to release the downward pressure on the optical module 100. The upper block 2031 is separated from the lower block 2032 under the action of the spring 2033, and the magnetic attraction area 2034 is powered off. Then, the optical module 100 can be easily taken out, and the operation is convenient and quick.

[0049] Specifically, the magnetic attraction area 2034 includes an electromagnet and a power module, the power module has a power port, and the power supply area 2035 includes a power supply module, the power supply module is electrically connected to the connector, and when the connector is connected to the power port, the electromagnet is charged to generate adsorption force.

[0050] In one embodiment, the stopper 300 is movably disposed in the groove 102, and an adjuster is provided at the end of the stopper 300 for adjusting the position of the stopper 300. This embodiment is arranged so as to facilitate adaptive adjustment of the position of the stopper 300 according to detection requirements, meet different detection requirements, and improve the applicability of the device.

[0051] Specifically, the regulator can be a device that can provide a linear driving force, such as an electric push rod.

[0052] In one embodiment, a test board 400 is further included, which is used to supply power to the optical module 100 and provide an interface for the optical module 100 to communicate with a host computer.

[0053] The present invention also provides an unlocking function detection method, using the detection device as described above, specifically comprising the following steps:

[0054] Insert the optical module 100 into the cavity 201 for the first time during the initial test, and read the resistance value of the multimeter. If the resistance value is greater than 20MΩ, an alarm is prompted, and the display screen displays the size NG; if the resistance value is less than 10Ω, no alarm is required, and the display screen displays the size OK;

[0055] Insert the optical module 100 into the cavity 201 for the second time during the final test and read the resistance value of the multimeter. If the resistance value is less than 10Ω, an alarm is prompted and the display screen displays "size NG". If the resistance value is infinite, no alarm is required and the display screen displays "size OK".

[0056] This solution utilizes two plugging and unplugging operations, corresponding to the initial adjustment and final test respectively, and can complete the detection of key dimensions without adding unnecessary processes.

[0057] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0058] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An unlocking function detection device, used for detecting an unlocking member (101) on an optical module (100), characterized in that ,include: A test fixture (200) having a cavity (201) for inserting the optical module (100); A limiting member (300) is disposed in the cavity (201); The optical module (100) is inserted into the cavity (201) to form a conducting circuit, and the resistance value between the unlocking member (101) and the limiting member (300) is detected to determine the unlocking function of the optical module (100).

2. An unlocking function detection device as claimed in claim 1, characterized in that: The position-limiting member (300) is connected to a multimeter via a wire, and the multimeter transmits the value to a host computer to perform a size detection on the unlocking member (101).

3. An unlocking function detection device as claimed in claim 2, characterized in that: Part of the upper area of ​​the limiting member (300) is electroplated, and the portion in contact with the gauge (200) is non-conductive.

4. The unlocking function detection device according to claim 1, characterized in that: The limiting member (300) is limited in a groove (102) provided on the inspection tool (200), and an elastic member (301) is provided in the groove (102) and is connected to the limiting member (300) at one end, and the other end of the elastic member (301) is connected to the stopper (302).

5. The unlocking function detection device according to claim 1, characterized in that: It also comprises a guide plate (202), a sliding member (203) being provided at the bottom of the guide plate (202), the sliding member (203) being movably embedded in the L-shaped guide groove (204), and during the insertion process of the optical module (100), the end portion of the optical module (100) abuts against the guide plate (202) and enters the inspection fixture (200) in a horizontal posture.

6. An unlocking function detection device as claimed in claim 5, characterized in that: The guide plate (202) is of a concave structure, one end of the guide plate (202) is sealed and the other end is open, and the initial position of the guide plate (202) extends forward to the outside of the inspection tool (100).

7. An unlocking function detection device as claimed in claim 5, characterized in that: The sliding member (203) comprises an upper block (2031) and a lower block (2032); the upper block (2031) and the lower block (2032) are connected via a spring (2033); a magnetic attraction area (2034) is provided on the surface of the upper block (2031); a power supply area (2035) for supplying power to the magnetic attraction area (2034) is provided on the surface of the lower block (2032); when the upper block (2031) and the lower block (2032) are in contact with each other, the magnetic attraction area (2034) generates a magnetic attraction force, and the upper block (2031) and the lower block (2032) can slide in the L-shaped guide groove (204).

8. An unlocking function detection device as claimed in claim 4, characterized in that: The limiting member (300) is movably disposed in the groove (102), and an adjuster is provided at the end of the limiting member (300) for adjusting the position of the limiting member (300).

9. An unlocking function detection device as claimed in claim 2, characterized in that: It also includes a test board (400) for supplying power to the optical module (100) and providing an interface for the optical module (100) to communicate with a host computer.

10. A method for detecting an unlocking function, using the detection device according to any one of claims 1 to 9, characterized in that: The specific steps include: Insert the optical module (100) into the cavity (201) for the first time during the initial test, and read the resistance value of the multimeter. If the resistance value is greater than 20MΩ, an alarm is given and the display screen displays "size NG". If the resistance value is less than 10Ω, no alarm is given and the display screen displays "size OK". The optical module (100) is inserted into the cavity (201) for the second time during the final test, and the resistance value of the multimeter is read. If the resistance value is less than 10Ω, an alarm is given and the display screen displays "size NG". If the resistance value is infinite, no alarm is given and the display screen displays "size OK".

Images