PCBA board test fixture

Abstract

The utility model relates to the PCBA board detection equipment field, and discloses a PCBA board test tool comprising a hollow seat, the top of the hollow seat is provided with a hinge, the left side and the right side of the rear part of the hinge are fixedly connected with groove rotating plates, the hinge is rotatably connected with the hollow seat through the groove rotating plates, and the groove rotating plates are fixedly connected with the hollow seat through the groove rotating plates. A plurality of holes are formed in the bottom of the inner wall of the groove rotating plate, buffer springs are fixedly connected to the inner walls of the holes, contact blocks are fixedly connected to the tops of the buffer springs, and hollow fixing blocks are fixedly connected to the left side and the right side of the top of the groove rotating plate. The PCBA board is placed above the groove rotating plate, the position of the sliding hollow block is adjusted to clamp the width of the PCBA board, then the fixing knob is rotated to lock the position, the baffle is moved to enable one side of the PCBA board to be attached to the groove, and the rotating clamping block is pressed to enable the L-shaped inclined block to stretch out and be extruded and fixed, so that clamping and fixing of different PCBA boards can be completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to PCBA board detection equipment field especially relates to a PCBA board test fixture. BACKGROUND

[0002] PCBA board test fixture is used for detecting and verifying the important tool of electronic product function, and its main function is in the production process to the performance test of the assembled completed circuit board, ensures the quality and reliability of product, and test fixture usually is composed of mechanical structure, electronic test module and control system, can quickly, accurately detect each element on the circuit board.

[0003] Through the retrieval, China patent publication number is: CN221100959U, discloses a kind of PCBA board multifunctional efficient test fixture, including bottom plate, the upper end middle part of the bottom plate is fixedly connected with detection table, the upper end left part and the upper end right part of the bottom plate are all opened with sliding slot, the detection table is between two sliding slots, the upper end left part and the upper end right part of the bottom plate are all fixedly connected with fixed plate, the end of two fixed plates away from detection table is all fixedly connected with clamping device, the upper end rear part of the bottom plate is fixedly connected with frame, the left end upper part of the frame is fixedly connected with control keyboard, the left part of the inner upper wall and the right part of the inner upper wall of the frame are all fixedly connected with limit guide rod, a kind of PCBA board multifunctional efficient test fixture described in the utility model, by being equipped with clamping device and pressing assembly, different models, different sizes of PCBA board can be conveniently tested by personnel, so as to improve the use performance of test fixture, but in actual use process, the PCBA board test fixture needs to be customized according to the electronic product required to be detected and verified, and then the detection of PCBA board of different sizes cannot be well adapted, so as to improve cost demand. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a kind of PCBA board test fixture, to improve the problem of the problem of not being able to well adapt to PCBA board of different sizes in prior art.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a PCBA board test fixture, including the hollow seat, the top of hollow seat is provided with the hinge, the rear left and right sides of hinge are all fixedly connected with the recessed plate, the hinge is rotated with the hollow seat through recessed plate, the inner wall bottom of recessed plate is equipped with a plurality of hole, the inner wall fixedly connected with buffer spring of hole, the top fixedly connected with contact block of buffer spring, the top left and right sides of recessed plate are all fixedly connected with hollow solid block, the adjacent side of two hollow solid blocks is slidably connected with sliding hollow block, the left and right sides of sliding hollow block are all screw -threaded with fixed knob, the inner wall front side of sliding hollow block is slidably connected with moving baffle, the outer wall rear of moving baffle is slidably connected with L-shaped inclined block on the upside and downside, the adjacent side of two L-shaped inclined blocks is fixedly connected with tension spring, the rear of moving baffle is provided with rotating block, the outer wall front of rotating block is rotated and is connected with conical block through moving baffle, the rear top of recessed plate is provided with adjusting mechanism, and the adjusting mechanism is used for adjusting the different positions of probe.

[0006] Through the above technical scheme: the PCBA board of detection is placed on the top of recessed plate, and after the position of sliding hollow block is adjusted on the top of hollow solid block, the width of the PCBA board can be fitted with the recess on the top of recessed plate, and the fixed knob is rotated, so that the sliding hollow block is fixed in the adjusted position, then the moving baffle is slid, so that the left side or the right side of the PCBA board can be fitted with the recess on the top of recessed plate, and the conical block is pressed, so that the conical block moves to the front side of moving baffle, so that the L-shaped inclined block is stretched under the influence of the inclined surface on the outer side, so that the L-shaped inclined block is extruded and fixed with the inner side of sliding hollow block, and the rotating block is rotated, so that the rotating block is clamped with the moving baffle, so that the fixing is completed, finally under the clamping of sliding hollow block and moving baffle, different PCBA boards can be extruded and clamped, and then the fixing is completed.

[0007] Further description of the above technical scheme:

[0008] The adjusting mechanism includes an L-shaped block, which is fixedly connected to the rear top of the recessed plate, and the left and right sides of the L-shaped block are fixedly connected to a limiting plate, the bottom of the limiting plate is fixedly connected to an electric telescopic rod, one end of the two electric telescopic rods is fixedly connected to a hollow plate, the top of the hollow plate is slidably connected to a plurality of sliding bars, the rear side of the sliding bar is slidably connected to a plurality of moving blocks, the top of the moving block is fixedly connected to a hollow threaded column, the outer wall of the hollow threaded column is threadedly connected to a fixed nut, the inner wall of the hollow threaded column is provided with a contact pin, the front side of the moving block is rotatably connected to a fixed block one, and the bottom left and right sides of the hollow plate are rotatably connected to a fixed block two.

[0009] Through the technical scheme, after clamping and fixing the PCBA board to be detected, the hollow plate can be moved to the bottom of the hollow seat by starting the electric telescopic rod, so that the contact pin contacts the contact point above the PCBA board, and the position of the plurality of contact pins in the Y-axis direction above the hollow plate can be changed by moving the sliding bar, and the moving block can be moved above the sliding bar to change the position of the single contact pin in the X-axis direction above the hollow plate, and the moving block after movement can be fixed by rotating the fixed rotating block I, and the sliding bar after movement can be fixed by rotating the fixed rotating block II, and the single contact pin that does not need to be contacted can be fixed by rotating the fixed nut, so that the hollow threaded column is fixed to the contact pin, and then the single contact pin is moved to the top of the hollow seat by a distance, and then the fixed nut is rotated to fix the hollow threaded column to the contact pin, so that the single contact pin does not contact the PCBA board, so that the position of the contact pin can be adjusted according to the position of the contact point of the PCBA board, so as to adapt to the detection of different PCBA boards.

[0010] As a further description of the above technical scheme:

[0011] The front left side of the outer wall of the hollow seat is fixedly connected with a fixed block, and the front side of the fixed block is fixedly connected with a nameplate.

[0012] Through the above technical scheme, the basic information of the equipment can be recorded through the nameplate.

[0013] As a further description of the above technical scheme:

[0014] The front right side of the outer wall of the hollow seat is fixedly connected with a limiting block, and the front side of the limiting block is fixedly connected with a warning mark block.

[0015] Through the above technical scheme, the warning mark block can remind the operator to pay attention to safety.

[0016] As a further description of the above technical scheme:

[0017] The front left and right sides of the recessed rotating plate are fixedly connected with clamping hooks, and the top left and right sides of the front end of the outer wall of the hollow seat are rotatably connected with rotating blocks.

[0018] Through the above technical scheme, the rotating blocks can be clamped with the clamping hooks by rotating the rotating blocks, so as to fix the hollow seat and the recessed rotating plate.

[0019] As a further description of the above technical scheme:

[0020] The bottom corners of the hollow seat are fixedly connected with limiting hollow columns, and the inner walls of the limiting hollow columns are threadedly connected with threaded columns.

[0021] Through the technical scheme, the height of the device can be adjusted through the threaded support and the limiting hollow column, so that the equipment is kept in a horizontal position.

[0022] Further description is made to the technical scheme:

[0023] The top front and back sides of the hollow solid block are fixedly connected with limiting columns, and the outer wall of the limiting column is fixedly connected with a limiting spring.

[0024] Through the technical scheme, the position of the hollow plate can be limited through the limiting column, and the limiting spring can provide a buffer space for the hollow plate during use.

[0025] Further description is made to the technical scheme:

[0026] The top front side of the recessed rotating plate is fixedly connected with a plurality of control switches, the outer wall right side of the hollow seat is fixedly connected with a cooling fan, and the top of the L-shaped block is fixedly connected with a display lamp.

[0027] Through the technical scheme, the operation of the equipment can be controlled through the control switch, the electronic equipment in the device can be cooled through the cooling fan, and the result of the detected PCBA plate can be directly known through the display lamp.

[0028] The utility model has the advantages of the following beneficial effects:

[0029] 1、 the utility model discloses a PCBA board is placed on the recessed rotating plate above, and the sliding hollow block position is adjusted to hold the PCBA board width, and then the fixed knob is rotated to lock the position, and the baffle is moved to make one side of the PCBA board adhere to the recess, and the L-shaped inclined block is extruded and pressed to be fixed by pressing the rotating clamping block, so that the fixing is completed, and the PCBA board can be clamped and fixed by the sliding hollow block and the movable baffle, and the clamping and fixing of different PCBA boards can be completed.

[0030] 2、 the utility model discloses that after clamping the PCBA board, the electric telescopic rod is started, and the hollow plate is moved to the bottom of the hollow seat, so that the contact pin contacts the PCBA board, the Y-axis position of the contact 206 is adjusted through the sliding bar, the moving block changes the X-axis position, the fixed rotating block one and the fixed rotating block two are rotated respectively to fix the moving block and the sliding bar, if not contact, the fixed nut is rotated to release the fixing of the contact pin by the hollow threaded column, and the PCBA board is fixed after moving, avoids the contact, and can adapt to the detection demand of different PCBA boards. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A perspective view of a PCBA board testing fixture is provided for the utility model;

[0032] Figure 2A front view of the PCBA board test fixture is provided in the utility model.

[0033] Figure 3 A plan view of the PCBA board test fixture is provided in the utility model.

[0034] Figure 4 A hollow seat structure schematic view of the PCBA board test fixture is provided in the utility model.

[0035] Figure 5 An adjusting mechanism schematic view of the PCBA board test fixture is provided in the utility model.

[0036] Legend:

[0037] 1, hollow seat; 2, adjusting mechanism; 201, hollow plate; 202, sliding bar; 203, moving block; 204, hollow threaded column; 205, fixed nut; 206, contact pin; 207, fixed rotating block one; 208, fixed rotating block two; 209, L-shaped block; 210, electric telescopic rod; 211, limiting plate; 3, hinge; 4, recessed plate; 5, hole; 6, buffer spring; 7, contact block; 8, hollow fixed block; 9, sliding hollow block; 10, fixed knob; 11, moving baffle; 12, L-shaped inclined block; 13, tension spring; 14, conical block; 15, rotating clamping block; 16, nameplate; 17, limiting block; 18, warning mark block; 19, clamping hook; 20, rotating block; 21, limiting hollow column; 22, threaded column; 23, limiting column; 24, limiting spring; 25, control switch; 26, cooling fan; 27, display lamp; 28, fixed block. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 4The utility model provides an embodiment: a kind of PCBA board test fixture, hollow seat 1 is provided with hinge 3 in the top of hollow seat 1, the rear portion left and right sides of hinge 3 are fixedly connected with recessed plate 4, hinge 3 is rotatably connected with hollow seat 1 by recessed plate 4, the inner wall bottom of recessed plate 4 is equipped with multiple holes 5, the inner wall of hole 5 is fixedly connected with buffer spring 6, the top of buffer spring 6 is fixedly connected with contact block 7, the top left and right sides of recessed plate 4 are fixedly connected with hollow solid block 8, the adjacent side of two hollow solid blocks 8 is slidably connected with sliding hollow block 9, the left and right sides of sliding hollow block 9 are threadedly connected with fixed knob 10, after the position of sliding hollow block 9 above hollow solid block 8 is adjusted, so that the width of the PCBA board can be consistent with the recess above recessed plate 4, and fixed knob 10 is rotated, so that sliding hollow block 9 is fixed in the adjusted position;The inner wall front side of sliding hollow block 9 is slidably connected with movable baffle 11, the outer wall rear portion upper and lower sides of movable baffle 11 are slidably connected with L-shaped inclined block 12, the adjacent side of two L-shaped inclined blocks 12 is fixedly connected with tension spring 13, the rear side of movable baffle 11 is provided with rotating clamping block 15, the outer wall front side of rotating clamping block 15 is penetrated movable baffle 11 and is rotatably connected with conical block 14, sliding movable baffle 11 is slid, and by pressing rotating clamping block 15, so that conical block 14 moves to the front side of movable baffle 11, so that L-shaped inclined block 12 extends under the influence of the inclined surface on its outer side, so as to be extruded and fixed with the inner side of sliding hollow block 9, and rotating rotating clamping block 15, so that rotating clamping block 15 is engaged with movable baffle 11;The rear side of the top of recessed plate 4 is provided with adjusting mechanism 2, and adjusting mechanism 2 is used for adjusting the different positions of probe;

[0040] Specifically, the PCBA board to be detected is placed above recessed plate 4, and after the position of sliding hollow block 9 above hollow solid block 8 is adjusted, so that the width of the PCBA board can be consistent with the recess above recessed plate 4, and fixed knob 10 is rotated, so that sliding hollow block 9 is fixed in the adjusted position, then sliding movable baffle 11, so that the left side or the right side of the PCBA board can be consistent with the recess above recessed plate 4, and by pressing rotating clamping block 15, so that conical block 14 moves to the front side of movable baffle 11, so that L-shaped inclined block 12 extends under the influence of the inclined surface on its outer side, so as to be extruded and fixed with the inner side of sliding hollow block 9, and rotating rotating clamping block 15, so that rotating clamping block 15 is engaged with movable baffle 11, so as to complete fixing, finally under the clamping of sliding hollow block 9 and movable baffle 11, so that different PCBA boards can be extruded and clamped, and then fixed.

[0041] Refer to Figure 1 、 Figure 2 And Figure 5The adjusting mechanism 2 comprises an L-shaped block 209 fixedly connected to the top rear side of the recessed rotating plate 4, the left and right sides of the L-shaped block 209 are fixedly connected with limiting plates 211, the bottom of each limiting plate 211 is fixedly connected with an electric telescopic rod 210, one end of the two electric telescopic rods 210 is fixedly connected with a hollow plate 201, the electric telescopic rod 210 can move the hollow plate 201 to the bottom of the hollow seat 1; the top of the hollow plate 201 is slidably connected with a plurality of sliding bars 202, the rear side of each sliding bar 202 is slidably connected with a moving block 203, the moving sliding bar 202 can change the position of the plurality of contact pins 206 in the Y-axis direction above the hollow plate 201, and the moving block 203 can move above the sliding bar 202, so as to change the position of the single contact pin 206 in the X-axis direction above the hollow plate 201; the top of the moving block 203 is fixedly connected with a hollow threaded column 204, the outer wall of the hollow threaded column 204 is threadedly connected with a fixed nut 205, the inner wall of the hollow threaded column 204 is provided with a contact pin 206, the front side of the moving block 203 is rotatably connected with a fixed rotating block one 207, the bottom of the hollow plate 201 is rotatably connected with a fixed rotating block two 208 on the left and right sides, the fixed rotating block one 207 can fix the moved moving block 203, and the fixed rotating block two 208 can fix the moved sliding bar 202;

[0042] Specifically, after clamping and fixing the PCBA board to be detected, the hollow plate 201 can be moved to the bottom of the hollow seat 1 by starting the electric telescopic rod 210, so that the contact pin 206 contacts the contact point above the PCBA board, and the position of the plurality of contact pins 206 in the Y-axis direction above the hollow plate 201 can be changed by moving the sliding bar 202, and the moving block 203 can move above the sliding bar 202, so as to change the position of the single contact pin 206 in the X-axis direction above the hollow plate 201, and the fixed rotating block one 207 can fix the moved moving block 203, and the fixed rotating block two 208 can fix the moved sliding bar 202, at the same time, the single contact pin 206 which does not need to be contacted can be fixed by rotating the fixed nut 205, so as to release the fixing of the contact pin 206 by the hollow threaded column 204, then move it to the top of the hollow seat 1 by a certain distance, and then rotate the fixed nut 205 to fix the contact pin 206 by the hollow threaded column 204, so that the single contact pin 206 does not contact the PCBA board, so that the position of the contact pin 206 can be adjusted according to the position of the contact point of the PCBA board, so as to adapt to the detection of different PCBA boards.

[0043] Referring to Figure 1 and Figure 2The outer wall of the hollow seat 1 is fixedly connected with a fixed block 28 on the left side of the front part, the front side of the fixed block 28 is fixedly connected with a nameplate 16, the nameplate 16 can record the basic information of the equipment; the outer wall of the hollow seat 1 is fixedly connected with a limiting block 17 on the right side of the front part, the front side of the limiting block 17 is fixedly connected with a warning sign block 18, the warning sign block 18 can remind the operator to pay attention to safety; the front part of the recessed rotating plate 4 is fixedly connected with a clamping hook 19 on the left and right sides, the outer wall of the hollow seat 1 is rotatably connected with a rotating block 20 on the top of the left and right sides of the front end, the rotating rotating block 20 can make the rotating block 20 clamped with the clamping hook 19, thereby completing the fixing of the hollow seat 1 and the recessed rotating plate 4;

[0044] Specifically, the basic information of the equipment can be recorded through the nameplate 16, the operator can be reminded to pay attention to safety through the warning sign block 18, and the rotating block 20 can be clamped with the clamping hook 19 through the rotating rotating block 20, thereby completing the fixing of the hollow seat 1 and the recessed rotating plate 4.

[0045] Referring to Figure 1 , Figure 2 and Figure 3 , the bottom corners of the hollow seat 1 are fixedly connected with limiting hollow columns 21, the inner wall of the limiting hollow columns 21 is threadedly connected with threaded columns 22, the threaded columns 22 and the limiting hollow columns 21 can adjust the height of the device, thereby ensuring that the equipment is in a horizontal position; the top of the hollow fixed block 8 is fixedly connected with limiting columns 23 on the front and back sides, the outer wall of the limiting columns 23 is fixedly connected with limiting springs 24, the limiting columns 23 can limit the position of the hollow plate 201, and the limiting springs 24 can provide a buffer space for the use of the limiting hollow plate 201; a plurality of control switches 25 are fixedly connected to the top front side of the recessed rotating plate 4, a heat dissipation fan 26 is fixedly connected to the right side of the outer wall of the hollow seat 1, and a display lamp 27 is fixedly connected to the top of the L-shaped block 209, the control switches 25 can control the operation of the equipment, the heat dissipation fan 26 can dissipate heat from the electronic equipment in the device, and the result of the detected PCBA board can be directly known through the display lamp 27;

[0046] Specifically, the height of the device can be adjusted through the threaded columns 22 and the limiting hollow columns 21, thereby ensuring that the equipment is in a horizontal position, the position of the hollow plate 201 can be limited through the limiting columns 23, and the limiting springs 24 can provide a buffer space for the use of the limiting hollow plate 201, the operation of the equipment can be controlled through the control switches 25, and the electronic equipment in the device can be cooled through the heat dissipation fan 26, and the result of the detected PCBA board can be directly known through the display lamp 27.

[0047] Working principle: before using the device, first, the PCBA board to be detected is placed above the recessed rotating plate 4, the position of the sliding hollow block 9 above the hollow fixed block 8 is adjusted to ensure that the width of the PCBA board is fitted with the recess above the recessed rotating plate 4, then the fixed knob 10 is rotated to fix the sliding hollow block 9 at the adjusted position, then the movable baffle 11 is slid to fit the left or right side of the PCBA board with the recess above the recessed rotating plate 4, the tapered block 14 is moved to the front side of the movable baffle 11 by pressing the rotating clamping block 15, under the action of the inclined surface on the outer side, the L-shaped inclined block 12 extends and is extruded and fixed with the inner side of the sliding hollow block 9, then the rotating clamping block 15 is rotated to be clamped with the movable baffle 11, so as to complete the fixation, finally, under the joint clamping of the sliding hollow block 9 and the movable baffle 11, the extrusion and clamping of different PCBA boards are realized, and then the fixation is completed; and through the adjusting mechanism 2, after the PCBA board to be detected is fixed, the electric telescopic rod 210 is started to move the hollow plate 201 to the bottom of the hollow seat 1, so that the contact pin 206 contacts the contact point above the PCBA board, the position of the plurality of contact pins 206 in the Y-axis direction can be adjusted by moving the sliding bar 202, the moving block 203 can be moved above the sliding bar 202 to change the position of the single contact pin 206 in the X-axis direction, and the fixed rotating block one 207 can fix the moving block 203 after moving, the fixed rotating block two 208 can fix the sliding bar 202, if it is needed to release the contact of the contact pin 206, the fixed nut 205 is rotated to loosen the fixation of the contact pin 206, and after moving a certain distance to the top of the hollow seat 1, the fixed nut 205 is rotated again to fix the contact pin 206, so that it does not contact the PCBA board, in this way, the position of the contact pin 206 can be adjusted to meet the detection requirements of different PCBA boards.

[0048] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A PCBA board testing fixture, comprising a hollow base (1), characterized in that: The hollow base (1) is provided with a hinge (3) at its top. The left and right rear sides of the hinge (3) are fixedly connected with grooved rotating plates (4). The hinge (3) is rotatably connected to the hollow base (1) through the grooved rotating plates (4). The bottom of the inner wall of the grooved rotating plate (4) is provided with multiple holes (5). The inner wall of the holes (5) is fixedly connected with a buffer spring (6). The top of the buffer spring (6) is fixedly connected with a contact block (7). The left and right sides of the top of the grooved rotating plate (4) are fixedly connected with hollow blocks (8). The adjacent sides of the two hollow blocks (8) are slidably connected with sliding hollow blocks (9). The left and right sides of the sliding hollow blocks (9) are... All are threaded with a fixed knob (10). The inner wall of the sliding hollow block (9) is slidably connected to a movable baffle (11). The upper and lower sides of the outer wall of the movable baffle (11) are slidably connected to L-shaped inclined blocks (12). The adjacent sides of the two L-shaped inclined blocks (12) are fixedly connected to a tension spring (13). The rear side of the movable baffle (11) is provided with a rotating block (15). The front side of the outer wall of the rotating block (15) passes through the movable baffle (11) and is rotatably connected to a conical block (14). The rear side of the top of the grooved rotating plate (4) is provided with an adjustment mechanism (2). The adjustment mechanism (2) is used to adjust the different positions of the probe.

2. The PCBA board testing fixture according to claim 1, characterized in that: The adjusting mechanism (2) includes an L-shaped block (209), which is fixedly connected to the top rear side of the grooved rotating plate (4). Limiting plates (211) are fixedly connected to both the left and right sides of the L-shaped block (209). An electric telescopic rod (210) is fixedly connected to the bottom of the limiting plate (211). A hollow plate (201) is fixedly connected to one end of each of the two electric telescopic rods (210). Multiple sliding strips (202) are slidably connected to the top of the hollow plate (201). Multiple movable blocks (203) are slidably connected to the rear side of the strip (202). A hollow threaded column (204) is fixedly connected to the top of the movable block (203). A fixing nut (205) is threadedly connected to the outer wall of the hollow threaded column (204). A contact pin (206) is provided on the inner wall of the hollow threaded column (204). A fixed rotating block one (207) is rotatably connected to the front side of the movable block (203). A fixed rotating block two (208) is rotatably connected to the left and right sides of the bottom of the hollow plate (201).

3. The PCBA board testing fixture according to claim 1, characterized in that: A fixing block (28) is fixedly connected to the left side of the front part of the outer wall of the hollow seat (1), and a nameplate (16) is fixedly connected to the front side of the fixing block (28).

4. A PCBA board testing fixture according to claim 1, characterized in that: A limiting block (17) is fixedly connected to the right side of the front part of the outer wall of the hollow seat (1), and a warning sign block (18) is fixedly connected to the front side of the limiting block (17).

5. A PCBA board testing fixture according to claim 1, characterized in that: The front left and right sides of the grooved rotating plate (4) are fixedly connected with hooks (19), and the front top left and right sides of the hollow seat (1) are rotatably connected with rotating blocks (20).

6. A PCBA board testing fixture according to claim 1, characterized in that: The bottom corner of the hollow seat (1) is fixedly connected to a limiting hollow column (21), and the inner wall of the limiting hollow column (21) is threadedly connected to a threaded support column (22).

7. A PCBA board testing fixture according to claim 1, characterized in that: Limiting posts (23) are fixedly connected to the front and rear sides of the top of the hollow solid block (8), and limiting springs (24) are fixedly connected to the outer wall of the limiting posts (23).

8. A PCBA board testing fixture according to claim 2, characterized in that: Multiple control switches (25) are fixedly connected to the top front side of the grooved rotating plate (4), a cooling fan (26) is fixedly connected to the right side of the outer wall of the hollow seat (1), and an indicator light (27) is fixedly connected to the top of the L-shaped block (209).

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