Test carrier and test device for PCB

Abstract

The utility model provides a test carrier and a test device for a PCB, and relates to the technical field of semiconductor test. The test carrier comprises a bearing plate and is located in the test cavity, the bearing plate is arranged to be connected with the mounting frame in a drawing manner, a positioning groove is formed in the top of the bearing plate, and the positioning groove is arranged to be matched with the structure of the PCB so as to mount the PCB; the fixing assembly is located at the top of the bearing plate, the fixing assembly comprises a plurality of fixing pieces, the fixing pieces are located on the peripheral side of the positioning groove, and a limiting space is defined by the fixing pieces so as to limit the PCB located in the positioning groove; and the detection assembly is connected to the bearing plate and comprises at least two detection pieces, and the detection pieces are used for detecting the installation state of the PCB. According to the utility model, the test fixture comprises the bearing plate which moves with the mounting frame in a drawing manner, and the PCB is limited through the fixing piece and the limiting groove, so that the convenience of taking and placing the PCB is improved, and the mounting stability of the PCB is improved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor testing, and particularly relates to a test carrier and a test device for a PCB (Printed Circuit Board). Background Art

[0002] In the electronic manufacturing industry, as the support and connection foundation of electronic components, the quality and reliability of the PCB are directly related to the performance of the entire electronic product. With the increasing trend of miniaturization and integration of electronic products, the complexity and precision requirements of the PCB are also getting higher and higher, posing higher challenges to the detection and testing of the PCB.

[0003] Traditional PCB detection methods mostly use manual detection, which is not only inefficient but also prone to misjudgment and missed detection due to human factors. In order to improve the detection efficiency and accuracy, automated detection equipment has gradually become the industry mainstream. However, there are still some problems in the fixing, installation, and detection processes of existing automated detection equipment for PCBs, such as unstable fixing, complex installation, and incomplete detection.

[0004] In the prior art, there are various test carriers for PCB testing. However, usually, the PCB is directly placed in the limiting groove. If the depth of the limiting groove is too deep, multiple probes of the probe mechanism cannot contact the PCB. If the depth of the limiting groove is too shallow, the PCB is not stably installed and is prone to displacement as the test carrier moves, resulting in the probe mechanism being unable to test the PCB, or multiple components need to be manually adjusted during the installation of the PCB, with complex operations and long time consumption. Summary of the Utility Model

[0005] An object of the first aspect of the utility model is to provide a test carrier for a PCB, so as to solve the technical problems that the PCB board is inconvenient to place and prone to slipping in the prior art.

[0006] Another object of the first aspect of the utility model is to improve the usability of the test carrier.

[0007] An object of the second aspect of the utility model is to provide a test device including the above test carrier.

[0008] According to the object of the first aspect of the utility model, the utility model provides a test carrier for a PCB. The test carrier is located in the test cavity of the test device. The test device includes an installation frame, and the test cavity is formed inside the installation frame. The test carrier is used to detect the PCB. The test carrier includes:

[0009] A carrier plate, located within the test cavity. The carrier plate is configured to be slidably connected to the mounting frame. The top of the carrier plate is provided with a positioning groove, and the positioning groove is configured to cooperate with the structure of the PCB to mount the PCB.

[0010] A fixing assembly, located on the top of the carrier plate. The fixing assembly includes a plurality of fixing members. The plurality of fixing members are located on the periphery of the positioning groove, and the plurality of fixing members surround to form a limiting space to limit the PCB located in the positioning groove.

[0011] A detection assembly, connected to the carrier plate. The detection assembly includes at least two detection members, and the detection members are used to detect the installation state of the PCB.

[0012] Optionally, the fixing member includes a top surface, and the fixing member further includes:

[0013] A limiting surface, recessed from one side edge of the top surface of the fixing member close to the positioning groove towards the side away from the positioning groove.

[0014] Optionally, it further includes:

[0015] A connection frame, arranged around the periphery of the carrier plate. The connection frame is configured to be movable relative to the mounting frame along a preset sliding direction, and the connection frame is further configured to move synchronously with the carrier plate along the preset sliding direction.

[0016] Optionally, the carrier plate is provided with positioning holes;

[0017] The connection frame includes a protruding portion, protruding from the bottom of the connection frame towards the carrier plate, and the protruding portion is inserted into the positioning holes of the carrier plate.

[0018] Optionally, the two detection members are located on opposite sides of the carrier plate.

[0019] Optionally, the carrier plate further includes two relief grooves, and the two relief grooves are located on opposite sides of a preset portion of the positioning groove.

[0020] Optionally, a retaining sleeve is further provided on the top of the PCB, and the fixing assembly further includes:

[0021] A positioning protrusion, extending along a second horizontal direction. The positioning protrusion abuts against the fixing member, and the positioning protrusion is formed with an insertion port extending along the first horizontal direction, and the insertion port is arranged corresponding to the retaining sleeve. The second horizontal direction is perpendicular to the first horizontal direction.

[0022] Optionally, the detection member is a magnetic sensor.

[0023] According to the second aspect of the present utility model, the present utility model further provides a testing device, including the testing carrier described in any one of the above, and the testing device further includes:

[0024] A housing, inside which there is formed the testing cavity extending along the second horizontal direction, and a plurality of probe holes are provided at the top of the housing;

[0025] A probe mechanism, located above the housing, and a plurality of probes of the probe mechanism are arranged to pass through the probe holes and abut against the PCB to test the PCB.

[0026] Optionally, the testing device further includes:

[0027] A card inserting mechanism, located above the carrier board, and the card inserting mechanism includes a test card, and the test card is arranged to pass through the card inserting port and enter the card sleeve to perform a card inserting test on the PCB.

[0028] The testing carrier of the present utility model forms a pull-out connection between the carrier board and the mounting frame of the testing device, and a plurality of fixing members are arranged on the periphery of the limiting groove at the top of the carrier board. The limiting space formed by the plurality of fixing members cooperates with the limiting groove to limit the PCB, improving the convenience of taking and placing the PCB. At the same time, a limiting groove and a plurality of fixing members are arranged at the top of the carrier board to prevent the PCB from falling when the carrier board carrying the PCB switches between the inserted state and the pulled-out state, thereby improving the stability of the testing carrier.

[0029] Furthermore, the carrier board of the present utility model further includes two relief grooves, and the two relief grooves are located on opposite sides of a preset part of the positioning groove, facilitating the taking and placing of the PCB, and at the same time keeping the PCB in a horizontal state when taking and placing the PCB, avoiding the situation that the PCB is worn due to contact with other components when the PCB is tilted during taking and placing.

[0030] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly and implement it according to the content of the specification, the following takes the preferred embodiments of the present utility model and combines with the drawings to describe in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The following will describe some specific embodiments of the present utility model in detail in an exemplary but not restrictive manner with reference to the drawings. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0032] Figure 1 is a schematic structural diagram of a testing fixture according to an embodiment of the present utility model;

[0033] Figure 2 Schematic installation diagram of the positioning protrusion and the fixing member according to an embodiment of the present utility model;

[0034] Figure 3 Schematic structural diagram of a test device according to an embodiment of the present utility model;

[0035] Figure 4 Schematic top view of a test carrier in an entering state according to an embodiment of the present utility model;

[0036] Figure 5 Schematic top view of a test carrier in a withdrawn state according to an embodiment of the present utility model.

[0037] Reference numerals:

[0038] 100 - Test carrier, 200 - Test device, 10 - Carrying plate, 11 - Positioning groove, 12 - Relief groove, 20 - Fixing assembly, 21 - Fixing member, 22 - Positioning protrusion, 211 - Top surface, 212 - Limiting surface, 221 - Insertion card port, 30 - Detection assembly, 31 - Detection member, 40 - Connection frame, 41 - Protruding part, 210 - Test cavity, 220 - Installation frame, 230 - Housing, 240 - Probe mechanism, 250 - Insertion card mechanism. Detailed implementation manners

[0039] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0040] To make the above objects, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below with reference to the drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. Additionally, it should be noted that for the sake of convenience of description, only the parts related to the present application are shown in the drawings, rather than all the structures. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0041] The terms "including" and "having" and any variations thereof in the present application are intended to cover non - exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or devices.

[0042] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] Figure 1 is a schematic structural diagram of a test fixture according to an embodiment of the utility model, Figure 2 It is a schematic installation diagram of a positioning protrusion and a fixing member according to an embodiment of the utility model.

[0044] like Figure 1 As shown, the utility model provides a test carrier 100 for PCB. The test carrier 100 is located in a test cavity 210 of a test device 200. The test device 200 includes a mounting frame 220. The test cavity 210 is formed in the mounting frame 220. The test carrier 100 is used to detect PCB. The test carrier 100 includes a carrier plate 10, a fixing assembly 20 and a detection assembly 30. The carrier plate 10 is located in a test cavity 210. The carrier plate 10 is configured to be connected to a mounting frame 220 by pulling. A positioning groove 11 is provided on the top of the carrier plate 10. The positioning groove 11 is configured to cooperate with the structure of the PCB to install the PCB. The fixing assembly 20 is located on the top of the carrier plate 10. The fixing assembly 20 includes a plurality of fixing members 21. The plurality of fixing members 21 are located on the periphery of the positioning groove 11. The plurality of fixing members 21 are surrounded to form a limiting space to limit the PCB located in the positioning groove 11. The detection assembly 30 is connected to the carrier plate 10. The detection assembly 30 includes at least two detection members 31. The detection members 31 are used to detect the installation status of the PCB. Here,

[0045] In this embodiment, the carrier plate 10 is connected to the mounting frame 220 of the test device 200 in a pull-out manner, and a plurality of fixing members 21 are arranged around the limiting groove at the top of the carrier plate 10, and the limiting space formed by the plurality of fixing members 21 cooperates with the limiting groove to limit the PCB, and at the same time, the detection assembly 30 is fixedly connected to the carrier plate 10 for detecting the installation state of the PCB. That is, the carrier plate 10 is arranged to move in a direction away from or close to the test cavity 210 when relative movement occurs relative to the mounting frame 220, so that the carrier plate 10 has an entry state located in the test cavity 210 and a withdrawal state located outside the test cavity 210, which is convenient for placing the PCB and improves the convenience of taking and placing the PCB. At the same time, the limiting groove and the plurality of fixing members 21 are arranged on the top of the carrier plate 10 to prevent the PCB from falling when the carrier plate 10 carries the PCB and switches between the entry state and the withdrawal state, thereby improving the stability of the test carrier 100.

[0046] In this embodiment, after the PCB is placed on the carrier plate 10, the carrier plate 10 is pulled out according to the actual testing requirements of the testing device 200, so that the carrier plate 10 is switched between the entering state and the withdrawn state, and the PCB is taken out from the carrier plate 10 in the withdrawn state after the test is completed, thereby improving the ease of use of the test carrier 100.

[0047] In this embodiment, by arranging a detection component 30 for detecting the installation state of the PCB on the carrier board 10, the installation state of the PCB can be detected in real time, and the PCB is prevented from moving or falling when the carrier board 10 is switched between the entry state and the withdrawal state, thereby avoiding the occurrence of PCB test failure due to the inadequate installation state of the PCB. At the same time, the detection member 31 in the detection component 30 can also detect the integrity of the PCB, and avoid the occurrence of PCB test failure due to missing, missing corners, warped edges or bending of the PCB, thereby avoiding the increase of PCB defective rate due to missing corners, warped edges or bending of the PCB after the test is passed, so as to improve the test efficiency.

[0048] like Figure 2 As shown, in a further embodiment, the fixing member 21 includes a top surface 211, and the fixing member 21 also includes a limiting surface 212, and the limiting surface 212 is configured to be recessed from the edge of one side of the top surface 211 of the fixing member 21 close to the positioning groove 11 toward the side away from the positioning groove 11. The limiting surface 212 of the fixing member 21 is configured to be recessed toward the side away from the positioning groove 11, and multiple limiting surfaces 212 of multiple fixing members 21 form a limiting space, so as to further limit the PCB on the basis of limiting the PCB by the limiting groove, thereby improving the installation stability of the PCB. At the same time, each limiting surface 212 forms a clearance space for the PCB to be taken and placed, so as to avoid the PCB from being damaged by contact with the fixing member 21 when the PCB is taken and placed.

[0049] like Figure 1As shown, in a further embodiment, the test carrier 100 further includes a connecting frame 40, which is arranged around the peripheral side of the carrier plate 10, and the connecting frame 40 is arranged to be movable relative to the mounting frame 220 along a preset pulling direction, and the connecting frame 40 is also arranged to move synchronously with the carrier plate 10 along the preset pulling direction. In this embodiment, the connecting frame 40 is arranged to be connected to the mounting frame 220 and the carrier plate 10 respectively, so that when the connecting frame 40 moves relative to the mounting frame 220 along the preset pulling direction, the carrier plate 10 is driven to move synchronously along the preset pulling direction, that is, the carrier plate 10 is indirectly connected to the mounting frame 220 through the pre-connected frame 40, so as to avoid the instability of the carrier plate 10 when the mounting frame 220 does not cooperate with the carrier plate 10 when the carrier plate 10 is directly connected to the mounting frame 220, thereby affecting the installation stability of the PCB. Here, the preset pulling direction is a horizontal direction away from or close to the test cavity 210.

[0050] In a further embodiment, the carrier plate 10 is provided with a positioning hole, and the connecting frame 40 includes a protruding portion 41, which protrudes from the bottom of the connecting frame 40 toward the carrier plate 10, and the protruding portion 41 is inserted into the positioning hole of the carrier plate 10. The connecting frame 40 also includes two connecting plates, which extend in the horizontal direction and are symmetrically distributed on both sides of the carrier plate 10. The two ends of the protruding portion 41 are respectively abutted against the connecting plate and the carrier plate 10 to connect the carrier plate 10 and the connecting plate, thereby connecting the connecting frame 40 and the carrier plate 10, so as to prevent the carrier plate 10 from shaking when switching between the entering state and the withdrawing state, thereby improving the stability of the carrier plate 10.

[0051] In this embodiment, the protruding portion 41 includes an elastic member and a guide column. The elastic member is sleeved on the circumferential side of the guide column. The two ends of the guide column are respectively fixedly connected to the supporting plate 10 and the connecting plate. One end of the elastic member abuts against the connecting plate, and the other end is fixedly connected to the guide column to provide an elastic force along the vertical direction to the supporting plate 10.

[0052] In a further embodiment, two detection members 31 are located on opposite sides of the carrier plate 10 to detect the installation status at different positions of the PCB. In other embodiments, there may be multiple detection members 31, which are evenly spaced around the carrier plate 10 to perform real-time detection of the installation status at different positions of the PCB, thereby improving the accuracy of the PCB installation position detection.

[0053] In a further embodiment, the carrier plate 10 further includes two relief grooves 12, and the two relief grooves 12 are located on opposite sides of a preset portion of the positioning groove. In this embodiment, the preset portion is the middle portion of the positioning groove. For example, the PCB is of a U-shaped structure, that is, the positioning groove cooperating with the PCB is of a U-shaped structure, and the preset portion is the horizontal portion of the U-shaped structure. That is to say, the relief grooves 12 are arranged on opposite sides of the preset portion of the positioning groove, which facilitates the taking and placing of the PCB, and at the same time keeps the PCB in a horizontal state when taking and placing the PCB, avoiding the situation that the PCB is worn due to contact with other components when the PCB is tilted during taking and placing. Here, the depth of the relief groove 12 is greater than the depth of the positioning groove, which is convenient for taking and placing the PCB, thereby improving the convenience of taking and placing the PCB.

[0054] In a further embodiment, a card sleeve is further provided on the top of the PCB, and the fixing assembly 20 further includes a positioning protrusion 22. The positioning protrusion 22 extends along the second horizontal direction, the positioning protrusion 22 abuts against the fixing member 21, and the positioning protrusion 22 is formed with a card insertion port 221 extending along the first horizontal direction. The card insertion port 221 is correspondingly arranged with the card sleeve, and the second horizontal direction is perpendicular to the first horizontal direction. The positioning protrusion 22 is located on one side of the limiting groove, and the end of the positioning protrusion 22 abuts against the fixing member 21, so that the side surface of the positioning protrusion 22 and the limiting surface 212 of the fixing member 21 jointly form a limiting space to further limit the PCB.

[0055] In a further embodiment, the detecting member 31 is a magnetic force sensor. The magnetic force sensor has strong anti-interference ability against external electromagnetic interference and can maintain stable measurement performance in a complex electromagnetic environment, thereby ensuring the measurement accuracy of the detecting member 31. In this embodiment, the magnetic force sensor adopts a non-contact measurement method, that is, the detecting member 31 realizes real-time detection of the installation state of the PCB by sensing the change of the magnetic field, avoiding direct contact between the sensor and the PCB, being able to avoid friction and wear caused by contact, extending the service life of the sensor, and at the same time reducing the influence on the PCB and ensuring the accuracy of the measurement.

[0056] Figure 3 is a schematic structural diagram of a test device according to an embodiment of the present invention, Figure 4 is a schematic top view of a test carrier in an entering state according to an embodiment of the present invention, Figure 5 is a schematic top view of a test carrier in a withdrawn state according to an embodiment of the present invention.

[0057] Such as Figure 3As shown in the figure, the present utility model further provides a test device 200, which includes the above-mentioned test carrier 100. Regarding the test carrier 100, details will not be repeated here. The test device 200 further includes a housing 230 and a probe mechanism 240. A test cavity 210 extending along the second horizontal direction is formed in the housing 230, and a plurality of probe holes are provided at the top of the housing 230. The probe mechanism 240 is located above the housing 230, and a plurality of probes of the probe mechanism 240 are arranged to pass through the probe holes and abut against the PCB to test the PCB.

[0058] In this embodiment, by setting the carrier plate 10 of the test carrier 100 to be switched between an entering state and an extracting state in a pulling form, and by arranging the probe mechanism 240 at the top of the test cavity 210, a plurality of probes of the probe mechanism 240 abut against the PCB through the probe holes to test the PCB. The test device 200 in this embodiment facilitates the picking and placing of the PCB while improving the detection convenience of the test device 200.

[0059] In this embodiment, the carrier plate 10 of the test carrier 100 is connected to the connection frame 40 through a protruding portion 41. The protruding portion 41 includes an elastic member, so that when the probe passes through the probe hole and contacts the PCB, the carrier plate 10 is forced to move downward, avoiding rigid contact between the probe and the PCB, which may cause damage to the probe or the PCB, thereby improving the test safety of the test device 200.

[0060] As Figure 3 shown, in a further embodiment, the test device 200 further includes a card insertion mechanism 250. The card insertion mechanism 250 is located above the carrier plate 10. The card insertion mechanism 250 includes a test card, and the test card is arranged to enter the card sleeve through the card insertion port 221 to perform a card insertion test on the PCB. A plurality of test chips are arranged in the card sleeve, and the test card is electrically connected to the PCB through the plurality of test chips in the card sleeve to perform a card insertion test on the PCB.

[0061] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0062] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A test carrier for a PCB, the test carrier being located in a test cavity of a test device, the test device including a mounting frame within which the test cavity is formed, the test carrier being used for detecting the PCB, characterized in that, The test vehicle includes: A carrier plate located within the test cavity. The carrier plate is configured to be slidably connected to the mounting frame. A positioning groove is provided at the top of the carrier plate, and the positioning groove is configured to cooperate with the structure of the PCB to mount the PCB. A fixing assembly located at the top of the carrier plate. The fixing assembly includes a plurality of fixing members. The plurality of fixing members are located on the periphery of the positioning groove, and the plurality of fixing members enclose a limiting space to limit the PCB located in the positioning groove. A detection assembly connected to the carrier plate. The detection assembly includes at least two detection members for detecting the mounting state of the PCB.

2. The test vehicle according to claim 1, wherein, The fixing member includes a top surface, and the fixing member further includes: A limiting surface that is recessed from one side edge of the top surface of the fixing member close to the positioning groove toward the side away from the positioning groove.

3. The test vehicle according to claim 2, wherein It further includes: A connecting frame disposed around the periphery of the carrier plate. The connecting frame is configured to be movable relative to the mounting frame along a preset sliding direction, and the connecting frame is further configured to move synchronously with the carrier plate along the preset sliding direction.

4. The test vehicle according to claim 3, characterized in that, The carrier plate is provided with positioning holes. The connecting frame includes a protruding portion that protrudes from the bottom of the connecting frame toward the carrier plate, and the protruding portion is inserted into the positioning holes of the carrier plate.

5. The test vehicle according to claim 4, wherein: The two detection members are located on opposite sides of the carrier plate.

6. The test vehicle according to any one of claims 1-5, wherein: The carrier plate further includes two relief grooves located on opposite sides of a preset portion of the positioning groove.

7. The test vehicle according to claim 6, wherein, A card sleeve is further provided at the top of the PCB, and the fixing assembly further includes: A positioning protrusion extending in a second horizontal direction. The positioning protrusion abuts against the fixing member, and the positioning protrusion is formed with an insertion card port extending in a first horizontal direction. The insertion card port is correspondingly arranged with the card sleeve, and the second horizontal direction is perpendicular to the first horizontal direction.

8. The test vehicle according to claim 7, wherein: The detection member is a magnetic sensor.

9. A testing device, characterized in that, Including the test vehicle according to any one of claims 1-8, the test device further includes: A housing within which the test cavity extending in a second horizontal direction is formed, and a plurality of probe holes are provided at the top of the housing. A probe mechanism located above the housing. A plurality of probes of the probe mechanism are configured to pass through the probe holes and abut against the PCB to test the PCB.

10. The test device according to claim 9, characterized in that, It further includes: An insertion card mechanism located above the carrier plate. The insertion card mechanism includes a test card, and the test card is configured to pass through the insertion card port and enter the card sleeve to perform an insertion card test on the PCB.

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