Circuit board test tooling

Abstract

The utility model provides a circuit board test tool, which belongs to the technical field of circuit board test fixtures, and solves the technical problems of the existing circuit board test tool that the circuit board cannot be accurately positioned and cannot be accurately connected to an external source. The circuit board test tool includes: a base; a positioning block, which is fixed on the base and is provided with a positioning groove, and at least one first positioning hole is installed on the step of the positioning groove, and at least one board hole is provided on the circuit board, and the first positioning hole and the board hole are fixed by plugging and connecting through a first positioning pin; a support frame; a guide mechanism; a movable plate, on the side surface of which facing the positioning block, a plurality of movable probes are provided, and the circuit board is provided with a plurality of pinholes correspondingly plugged and matched with each movable probe; a lifting mechanism, when the movable probes and the pinholes are correspondingly plugged and matched, the circuit board can be tested. The utility model circuit board test tool has the advantages of being able to accurately position the circuit board and accurately connect to an external source.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit board testing fixtures, and in particular relates to circuit board testing fixtures. Background Art

[0002] Circuit boards (PCBs) include ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride ceramic circuit boards, FPC circuit boards, high-frequency circuit boards, etc.

[0003] Circuit boards make circuits miniaturized and intuitive, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layout.

[0004] At present, in the era of full automation, in order to successfully connect and communicate the circuit board of the low-voltage electric control system with the host computer, it is necessary to place the rectangular circuit board in a special tooling for positioning and then perform automated operations to avoid human factors affecting the fragile components on the circuit board. Therefore, in order to achieve this goal, the requirements for positioning are: 1. Accurate positioning of the circuit board and the matching tooling; 2. Each functional through hole on the circuit board needs to be accurately connected to the external power supply system, signal source and external source of the host computer for power supply and communication. However, at present, the positioning of the circuit board is manually operated and has the following defects: 1. There is uncertain electrostatic interference in manual operation, which has a certain probability of damaging the circuit board and causing unnecessary cost waste. 2. The manual positioning operation requires multiple people to work at the same time. First, the circuit board needs to be fixed to prevent sliding and loosening. Secondly, since there are many external sources connecting the circuit board, the circuit board has more through holes scattered in multiple parts. It is difficult to check whether the through holes are connected to the external source by naked eyes. Finally, the circuit board is easy to be installed in the wrong direction, resulting in damage to the circuit, which increases the difficulty of positioning and connection.

[0005] Therefore, there is an urgent need to provide a circuit board testing tool that can accurately position a circuit board and precisely connect to an external source. Utility Model Content

[0006] In view of this, the utility model provides a circuit board testing tool to solve the technical problems in the prior art of inaccurate positioning and inability to accurately connect to an external source when testing a circuit board.

[0007] The technical solution adopted by this utility model:

[0008] As an object of the utility model, a circuit board testing tool is provided, comprising: a base; a positioning block, which is fixed on the base and provided with a positioning groove, a step for supporting the circuit board is provided on the groove wall of the positioning groove, at least one first positioning hole is provided on the step, at least one board hole is provided on the circuit board, the first positioning hole and the board hole are fixed by plugging and connecting with a first positioning pin; a support frame, fixed on the base; a guide mechanism, supported on the base; a movable plate, which is movably arranged on the guide mechanism and has a plurality of movable probes on a side surface facing the positioning block, and a plurality of pinholes correspondingly plugged and matched with the movable probes are provided on the circuit board; a lifting mechanism, arranged on the support frame, the lifting mechanism is used to apply a force to the movable plate to drive the movable plate to move toward or away from the positioning block under the guidance of the guide mechanism, and when the movable plate and the positioning block are close to the corresponding plug-in matching of the movable probes and the pinholes, the circuit board can be tested.

[0009] Furthermore, the lifting mechanism is configured as an elbow clamp, and a force-bearing boss is provided on the moving block. The elbow clamp includes a fixed part, a force-applying part and a handle part. The fixed part is fixed to the support frame, and the force-applying part is fixed to the force-bearing boss. The handle part drives the force-applying part to move the moving plate in a direction perpendicular to the positioning block by rotating.

[0010] Furthermore, the support frame includes a bottom plate, a connecting plate and a supporting plate, the bottom plate is fixed on the base, the connecting plate is vertically fixed on the bottom plate, and both ends of the supporting plate are respectively fixed to the connecting plate and the lifting mechanism.

[0011] Furthermore, the guiding mechanism includes a pair of parallel guide rods, a pair of guide sleeves and a pair of fixed sleeves. The movable plate is provided with a pair of guide holes. A guide sleeve is arranged in each guide hole. The fixed sleeve is fixed on the base and fixes one end of the guide rod. The movable plate moves along the guide rod with the guide sleeve.

[0012] Further, the mobile probe includes a power supply probe and a host computer probe, and the pinhole includes a corresponding power supply pinhole and host computer pinhole.

[0013] Furthermore, the circuit board testing tooling also includes a host computer connector of a power connector arranged on the mobile board, a power probe is installed on the power connector, and a host computer probe is installed on the host computer connector. A power connection hole and a host computer connection hole are provided on the mobile board, which are electrically connected to the power supply and the host computer via a power connection line and a host computer connection line respectively.

[0014] Furthermore, the circuit board and the positioning groove are both configured to be rectangular.

[0015] Furthermore, the board holes are arranged in a pair and are respectively arranged at the angle of an adjacent rectangle along a short side of a rectangle of the circuit board. The power pinhole and the host computer pinhole are respectively arranged adjacently along and parallel to a pair of long sides of the rectangle and are relatively arranged at an angle relative to the center of the rectangle.

[0016] Furthermore, at least one seat hole is provided on the base, and at least one second positioning hole is provided on the positioning block. The seat hole and the second positioning hole are fixed by plugging together a second positioning pin. A plurality of pairs of first connecting holes and second connecting holes are provided on the positioning block and the base, and each pair of first connecting holes and second connecting holes is respectively connected by a connecting member.

[0017] Furthermore, the circuit board testing tooling also includes a pad block, which is arranged between the positioning block and the base, and is provided with a first pad block hole, a second pad block hole and a third pad block hole. A plurality of pairs of first pad block holes and second connecting holes are respectively provided on the pad block and the base, and the first pad block hole and the second connecting hole are connected by a connecting member. At least one seat hole is provided on the base, and the seat hole and the second pad block hole are fixed by a third positioning pin. A second positioning hole is provided on the positioning block, and the second pad block hole and the second positioning hole are fixed by a fourth positioning pin.

[0018] To summarize, the circuit board test tooling embodiment can not only achieve accurate positioning of the positioning block and the circuit board, but also prevent the circuit board from being installed upside down on the positioning block by setting a first positioning hole and a board hole that fit together on the positioning block and the circuit board, thereby ensuring that the movable probe on the movable plate is accurately connected to the pinhole on the circuit board, so that the circuit board test tooling achieves the technical effect of accurately positioning the circuit board and accurately connecting it to an external source. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment of the utility model will be briefly introduced below. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the utility model.

[0020] Figure 1 This is a schematic diagram of the overall structure of a circuit board testing tool embodiment of the utility model;

[0021] Figure 2 For the corresponding Figure 1 A partial explosion diagram of

[0022] Figure 3 It is a structural schematic diagram of a positioning block of a circuit board testing tool embodiment of the utility model at a viewing angle;

[0023] Figure 4 It is a structural schematic diagram of a positioning block of a circuit board testing tool embodiment of the utility model from another perspective;

[0024] Figure 5 A schematic diagram of the structure of a circuit board used for testing by a circuit board testing tool embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the overall structure of another circuit board testing tool embodiment of the utility model (the lifting mechanism is omitted);

[0026] Figure 7 It is a structural schematic diagram of a pad block of another circuit board testing tool embodiment of the utility model at one viewing angle;

[0027] Figure 8 It is a structural schematic diagram of a pad block of another circuit board testing tool embodiment of the utility model at another viewing angle;

[0028] Parts and numbers in the picture:

[0029] 1. Base; 11. Base hole; 12. Second connecting hole; 2. Positioning block; 21. Positioning groove; 22. Step; 23. First positioning hole; 24. Second positioning hole; 25. First connecting hole; 3. Circuit board; 31. Board hole; 32. Pinhole; 321. Power pinhole; 322. Upper computer pinhole; 4. Support frame; 41. Bottom plate; 42. Connecting plate; 43. Support plate; 5. Guide mechanism; 51. Guide rod; 52. Guide sleeve; 53. Fixed sleeve; 6. Moving probe; 61. Power probe; 62. Upper computer probe; 7. Moving plate; 71. Force boss; 72. Guide hole; 73. Power connection hole; 74. Upper computer connection hole; 8. Lifting mechanism; 81. Fixed part; 82. Force-applying part; 83. Handle part; 9. Pad; 91. First pad hole; 92. Second pad hole; 93. Third pad hole; 10. Power connector; 20. Upper computer connector. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, rather than indicating or implying 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 to the utility model. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and the various features in the embodiments can be combined with each other, all within the scope of protection of the utility model.

[0031] refer to Figures 1 to 5As an object of the present utility model, a circuit board test fixture embodiment is provided, which includes a base 1, a positioning block 2, a support frame 4, a guide mechanism 5, a movable plate 7 and a lifting mechanism 8. The positioning block 2 is fixed on the base 1 and is provided with a positioning groove 21. The groove wall of the positioning groove 21 is provided with a step 22 for supporting the circuit board 3. At least one first positioning hole 23 is provided on the step 22. At least one plate hole 31 is provided on the circuit board 3. The first positioning hole 23 and the plate hole 31 are plugged and fixed by a first positioning pin (not shown). The first positioning pin is pre-installed in the first positioning hole 23 so as to align the first positioning hole 23 of the circuit board 3 each time. The support frame 4 is fixed on the base 1. The guide mechanism 5 is supported on the base 1. The movable plate 7 is movably arranged on the guide mechanism 5 and a plurality of movable probes 6 are provided on a side surface facing the positioning block 2. The circuit board 3 is provided with a plurality of pinholes 32 correspondingly plugged and matched with each movable probe 6. The lifting mechanism 8 is arranged on the support frame 4. The lifting mechanism 8 is used to apply a force to the movable plate 7 to drive the movable plate 7 to move toward or away from the positioning block 2 under the guidance of the guide mechanism 5. When the movable plate 7 and the positioning block 2 are close to each other and the movable probe 6 and the pinhole 32 are plugged in and matched, the circuit board 3 can be tested. Therefore, the embodiment of the circuit board test fixture can not only accurately position the positioning block 2 and the circuit board 3 by setting the first positioning hole 23 and the plate hole 31 that are plugged in and matched on the positioning block 2 and the circuit board 3, but also prevent the circuit board 3 from being installed upside down on the positioning block 2, thereby ensuring that the movable probe 6 on the movable plate 7 is accurately connected to the pinhole 32 on the circuit board 3, so that the circuit board test fixture obtains the technical effect of accurately positioning the circuit board 3 and accurately connecting it with the external source.

[0032] Please refer to Figure 1 and Figure 2 Specifically, the lifting mechanism 8 is configured as a toggle clamp, and a force-bearing boss 71 is provided on the moving block. The toggle clamp includes a fixing portion 81, a force-applying portion 82, and a handle portion 83. The fixing portion 81 is fixed to the support frame 4, and the force-applying portion 82 is fixed to the force-bearing boss 71. The handle portion 83 rotates to drive the force-applying portion 82 to move the moving plate 7 in a direction perpendicular to the positioning block 2. In this way, the use of the toggle clamp as the lifting mechanism 8 is not only easy to operate, but also can accurately control the moving distance of the moving plate 7, which is conducive to further ensuring the accurate connection between the moving probe 6 and the pinhole 32.

[0033] Please refer to Figure 2 Specifically, the support frame 4 includes a bottom plate 41, a connecting plate 42 and a supporting plate 43. The bottom plate 41 is fixed on the base 1, the connecting plate 42 is vertically fixed on the bottom plate 41, and the two ends of the supporting plate 43 are respectively fixed to the connecting plate 42 and the lifting mechanism 8. In this way, the support frame 4 can be firmly fixed to the base 1 and the lifting mechanism 8, so that the circuit board test fixture has high stability.

[0034] Please refer to Figure 2 Specifically, the guide mechanism 5 includes a pair of parallel guide rods 51, a pair of guide sleeves 52 and a pair of fixed sleeves 53. The movable plate 7 is provided with a pair of guide holes 72, and a guide sleeve 52 is provided in each guide hole 72. The fixed sleeve 53 is fixed on the base 1 and fixes one end of the guide rod 51. The movable plate 7 moves along the guide rod 51 along with the guide sleeve 52. Therefore, the movement of the movable plate 7 is guided by a pair of parallel guide rods 51, so that the movable plate 7 can move smoothly and reliably.

[0035] Please refer to Figure 1 , Figure 2 and Figure 5 Preferably, the mobile probe 6 includes a power probe 61 and a host computer probe 62, and the pinhole 32 includes a corresponding power pinhole 321 and a host computer pinhole 322. In this way, the circuit board 3 can be accurately connected with the external power supply and the host computer and accept the test of the host computer. When each pair of probes and pinholes 32 of the circuit board 3 are correctly plugged in, the host computer will light up an indicator light indicating that the connection is correct, and the circuit board 3 performs a host computer connection communication test, thereby testing and determining the quality of the circuit board 3.

[0036] Please refer to Figure 1 Preferably, the circuit board test fixture further comprises a host computer connector 20 of the power connector 10 disposed on the mobile board 7, a corresponding processing circuit module is disposed in the host computer connector 20 of the power connector 10, a power probe 61 is mounted on the power connector 10, and a host computer probe 62 is mounted on the host computer connector 20, and a power connection hole 73 and a host computer connection hole 74 are disposed on the mobile board 7, which are electrically connected to the power supply and the host computer through the power connection line and the host computer connection line, respectively. In this way, the external power supply and the host computer are electrically connected to the power probe 61 and the host computer probe 62 correspondingly through the power connection line and the host computer connection line, so that the position where the circuit board test fixture is arranged can be facilitated, and the entanglement and crowding of the connection lines can be prevented.

[0037] Please refer to Figure 3 and Figure 5 Preferably, the circuit board 3 and the positioning groove 21 are both set to be rectangular, so that it can adapt to the rectangular shape adopted by most circuit boards 3 and has high compatibility.

[0038] Please refer to Figure 5Preferably, the board holes 31 are arranged in a pair and are respectively arranged at the angle of an adjacent rectangle along a short side of a rectangle of the circuit board 3. The power pinhole 321 and the host computer pinhole 322 are respectively arranged adjacently along and parallel to a pair of long sides of the rectangle, and are arranged oppositely and obliquely relative to the center of the rectangle. In this way, it can be further ensured that the circuit board 3 is correctly installed on the step 22 and each pair of probes and pinholes 32 are accurately connected. The oblique angles of each pair of probes and pinholes 32 are opposite, and an opposite force can be applied to the circuit board 3 to prevent it from deflecting on the step 22.

[0039] Please refer to Figures 2 to 4 Preferably, at least one seat hole 11 is provided on the base 1, and at least one second positioning hole 24 is provided on the positioning block 2. The seat hole 11 and the second positioning hole 24 are plugged and fixed by a second positioning pin (not shown). A plurality of pairs of first connecting holes 25 and second connecting holes 12 are provided on the positioning block 2 and the base 1. The first connecting holes 25 are specifically stepped holes. Each pair of first connecting holes 25 and second connecting holes 12 are connected by a connecting member, respectively. The connecting holes and the connecting members can be threaded holes and screws, respectively. Therefore, the seat hole 11 and the second positioning hole 24 are matched and fixed to ensure that the positioning block 2 is accurately positioned and fixed on the base 1.

[0040] Please refer to Figures 6 to 8 Optionally, as another embodiment of the circuit board test fixture of the utility model, it differs from the previous circuit board test fixture embodiment in that the circuit board test fixture also includes a pad 9, which is arranged between the positioning block 2 and the base 1. In this embodiment, the pad 9 is set as a pair of spaced parallel and perpendicular to the base 1, and a first pad hole 91, a second pad hole 92 and a third pad hole 93 are provided on the pad 9, and a plurality of pairs of first pad holes 91 and second connecting holes 12 are respectively provided on the pad 9 and the base 1, and the first pad hole 91 and the second connecting hole 12 are connected by a connecting member, and at least one seat hole 11 is provided on the base 1, and the seat hole 11 and the second pad hole 92 are plugged and fixed by a third positioning pin (not shown), and a second positioning hole 24 is provided on the positioning block 2, and the second pad hole 92 and the second positioning hole 24 are plugged and fixed by a fourth positioning pin (not shown). Therefore, by providing the cushion block 9 and reliably fixing the cushion block 9 to the positioning block 2 and the base 1 respectively, on the one hand, the stroke of the movable plate 7 can be reduced, and on the other hand, the supporting strength and positioning accuracy of the positioning block 2 can be improved.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. Circuit board testing tool, characterized in that: include: Base; A positioning block, which is fixed on the base and is provided with a positioning groove, a groove wall of the positioning groove is provided with a step for supporting the circuit board, at least one first positioning hole is provided on the step, at least one board hole is provided on the circuit board, and the first positioning hole is fixed to the board hole by plugging through a first positioning pin; A support frame, fixed on the base; A guiding mechanism, supported on the base; A movable plate is movably arranged on the guide mechanism and has a plurality of movable probes on one side thereof facing the positioning block, and a plurality of pinholes correspondingly plugged and matched with the movable probes are arranged on the circuit board; A lifting mechanism is arranged on the support frame, and is used for applying a force to the movable plate to drive the movable plate to move toward or away from the positioning block under the guidance of the guide mechanism. When the movable plate and the positioning block are close to each other to the point where the movable probe and the pinhole are plugged in correspondingly, the circuit board can be tested.

2. The circuit board testing tool according to claim 1, characterized in that: The lifting mechanism is configured as a toggle clamp, and a force-bearing boss is provided on the movable plate. The toggle clamp comprises a fixing portion, a force-applying portion and a handle portion. The fixing portion is fixed to the support frame, and the force-applying portion is fixed to the force-bearing boss. The handle portion drives the force-applying portion to move the movable plate in a direction perpendicular to the positioning block by rotating.

3. The circuit board testing tool according to claim 1, characterized in that: The support frame includes a bottom plate, a connecting plate and a supporting plate. The bottom plate is fixed on the base, the connecting plate is vertically fixed on the bottom plate, and two ends of the supporting plate are respectively fixed to the connecting plate and the lifting mechanism.

4. The circuit board testing tool according to claim 1, characterized in that: The guiding mechanism comprises a pair of parallel guide rods, a pair of guide sleeves and a pair of fixed sleeves. The movable plate is provided with a pair of guide holes, and a guide sleeve is arranged in each of the guide holes. The fixed sleeve is fixed on the base and fixes one end of the guide rod. The movable plate moves along the guide rod with the guide sleeve.

5. The circuit board testing tool according to claim 1, characterized in that: The mobile probe includes a power supply probe and a host computer probe, and the pinhole includes a corresponding power supply pinhole and a host computer pinhole.

6. The circuit board testing tool according to claim 5, characterized in that: The circuit board testing tool also includes a power connector and a host computer connector arranged on the mobile board, the power probe is installed on the power connector, and the host computer probe is installed on the host computer connector. A power connection hole and a host computer connection hole are provided on the mobile board, which are electrically connected to the power supply and the host computer via a power connection line and a host computer connection line respectively.

7. The circuit board testing tool according to claim 5, characterized in that: The circuit board and the positioning groove are both configured in a rectangular shape.

8. The circuit board testing tool according to claim 7, characterized in that: The board holes are arranged in a pair and are respectively arranged at an adjacent rectangular angle along a rectangular short side of the circuit board. The power pinhole and the host computer pinhole are respectively arranged adjacently along and parallel to a pair of rectangular long sides and are relatively arranged obliquely relative to the center of the rectangle.

9. The circuit board testing tool according to claim 1, characterized in that: At least one seat hole is provided on the base, and at least one second positioning hole is provided on the positioning block. The seat hole and the second positioning hole are fixed by plugging through a second positioning pin. A plurality of pairs of first connecting holes and second connecting holes are provided on the positioning block and the base, and each pair of first connecting holes and second connecting holes are respectively connected by a connecting piece.

10. The circuit board testing tool according to claim 1, characterized in that: The circuit board testing tool also includes a pad block, which is arranged between the positioning block and the base, and is provided with a first pad block hole, a second pad block hole and a third pad block hole. A plurality of pairs of first pad block holes and second connecting holes are respectively provided on the pad block and the base, and the first pad block hole is connected to the second connecting hole by a connecting member. At least one seat hole is provided on the base, and the seat hole and the second pad block hole are fixed by a third positioning pin. A second positioning hole is provided on the positioning block, and the second pad block hole and the second positioning hole are fixed by a fourth positioning pin.

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