Circuit board test fixture

Abstract

The utility model discloses a circuit board test fixture, which comprises a shielding box body, a closed structure and a detection structure, and is characterized in that the front side surface of the shielding box body is provided with an opening; the closing structure comprises a fixing plate, a carrying plate, a closing plate and a first telescopic unit; the fixed plate is horizontally and fixedly arranged in the shielding box body, and the first telescopic unit is fixedly arranged on the fixed plate; the support plate is slidably connected with the fixing plate, the closing plate is fixedly connected with the support plate, the telescopic end of the first telescopic unit is connected with the closing plate, the support plate is used for placing a circuit board to be detected, the first telescopic unit is used for driving the support plate to move relative to the opening, and the closing plate is used for closing or opening the opening.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of circuit board detection, in particular to a circuit board test fixture. BACKGROUND

[0002] The circuit board needs to be detected after being made, and the detection process is prone to damage the detection components on the top plate due to the top plate descending before the carrier plate is in place. In addition, the shielding box is prone to cause hand clamping accidents when the door is closed.

[0003] Therefore, a circuit board test fixture is needed to solve the above problems. INVENTION CONTENTS

[0004] To solve the above technical problems, the utility model adopts the technical scheme of:

[0005] A circuit board test fixture, comprising a shielding box, a closing structure and a detection structure, the front side of the shielding box is provided with an opening;

[0006] The closing structure comprises a fixed plate, a carrier plate, a closing plate and a first telescopic unit;

[0007] The fixed plate is horizontally fixedly arranged in the shielding box, and the first telescopic unit is fixedly arranged on the fixed plate; the carrier plate is slidably connected with the fixed plate, the closing plate is fixedly connected with the carrier plate, the telescopic end of the first telescopic unit is connected with the closing plate, the carrier plate is used for placing the circuit board to be detected, the first telescopic unit is used for driving the carrier plate to move relative to the opening, and the closing plate is used for closing or opening the opening;

[0008] The detection structure comprises a top plate, a second telescopic unit and a moving frame body;

[0009] The top plate, the second telescopic unit and the moving frame body are all arranged in the shielding box, the second telescopic unit is fixedly arranged in the shielding box, and the output end of the second telescopic unit is fixedly connected with the moving frame body; the top plate is fixedly connected with the moving frame body; the top plate is used for detecting the circuit board placed on the carrier plate, and the second telescopic unit is used for driving the top plate to approach or move away from the carrier plate.

[0010] Preferably, the second telescopic unit is vertically arranged in the shielding box, and the output end of the second telescopic unit is perpendicular to the bottom surface in the shielding box.

[0011] Preferably, the lower surface of the moving frame body is provided with at least one guide column, the carrier plate is provided with a guide groove matched with the guide column, when the top plate descends relative to the carrier plate, the guide column is inserted into the corresponding guide groove, thereby playing a guiding role, and when the carrier plate does not run into position, the guide column cannot be inserted into the corresponding guide groove, that is, the top plate cannot descend, thereby playing a role of protecting the top plate.

[0012] Preferably, the lower surface of the moving frame body is provided with at least one limiting column, and the limiting column is used for limiting the descending distance of the top plate relative to the carrier plate.

[0013] Preferably, the circuit board testing fixture further comprises an anti-pinch structure, the anti-pinch structure comprises two side plates, the side plates are symmetrically arranged on two sides of the opening, and the side plates are connected with the shielding box; a horizontal grating is horizontally arranged on each side plate, and the horizontal grating is arranged above the opening; and a vertical grating is vertically arranged on each side plate, and the vertical grating is arranged outside the opening.

[0014] Preferably, the horizontal grating, the vertical grating, the first telescopic unit and the second telescopic unit are electrically connected with the PLC controller.

[0015] Preferably, the first telescopic unit and the second telescopic unit are pneumatic telescopic rods or electric telescopic rods.

[0016] Preferably, the PLC controller is electrically connected with a position switch and a buzzer, the position switch is arranged in the shielding box, and the position switch is used for detecting whether the carrier plate is in position.

[0017] Preferably, the carrier plate is perpendicular to a fixed plate, and the fixed plate is parallel to the bottom surface in the shielding box.

[0018] Preferably, the shielding box is in a hollow rectangular cuboid structure.

[0019] Preferably, the lower surface of the top plate is provided with a plurality of probes, the probes correspond to the pin of the plug-in part of the circuit board placed on the carrier plate, and the top plate is in communication connection with a detector outside the shielding box.

[0020] Preferably, the detector is a signal controller.

[0021] Preferably, the shielding box is further provided with a plurality of wiring holes, and external wiring can pass through the wiring holes and enter the shielding box.

[0022] Preferably, the carrier plate is provided with a placing groove for placing the circuit board.

[0023] Thanks to the above technical scheme, the present application has the following technical progress compared with the prior art:

[0024] The present application effectively avoids the problem that the top plate is lowered before the carrier plate is in position when the circuit board is detected, and the detection components on the top plate are damaged.

[0025] Secondly, the anti-pinch structure effectively avoids the hand-pinch accident of the user when the shielding box is closed. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0027] Figure 1 A structural schematic diagram of the circuit board test fixture of the present application;

[0028] Figure 2 A structural schematic diagram of the circuit board test fixture of the present application;

[0029] Figure 3 A structural schematic diagram of the circuit board test fixture of the present application;

[0030] Figure 4 A structural schematic diagram of the circuit board test fixture of the present application;

[0031] Figure 5 A structural schematic diagram of the circuit board test fixture of the present application;

[0032] Main component symbol explanation

[0033]

[0034]

[0035] The following specific embodiments will further illustrate the present application in combination with the above drawings Specific embodiments

[0036] For the person skilled in the art to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The terms "first", "second", and the like in the specification of the present application and the claims and the above drawings are used to distinguish different objects, not to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to be inclusive, not exclusive. 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 can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product, or device.

[0037] Reference herein to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiment, nor is it necessarily mutually exclusive of other embodiments. It is explicitly and implicitly understood that the embodiments described herein can be combined with other embodiments.

[0038] Please refer to Figures 1-5 The embodiment of the present application provides a circuit board test fixture, which comprises a shielding box body 1, a closing structure 2 and a detection structure 3, and the front side of the shielding box body 1 is provided with an opening 11.

[0039] The closing structure 2 comprises a fixed plate 21, a carrier plate 22, a closing plate 23 and a first telescopic unit 24.

[0040] The fixed plate 21 is horizontally fixedly arranged in the shielding box body 1, and the first telescopic unit 24 is fixedly arranged on the fixed plate 21; the carrier plate 22 is slidably connected with the fixed plate 21, the closing plate 23 is fixedly connected with the carrier plate 22, the telescopic end of the first telescopic unit 24 is connected with the closing plate 23, the carrier plate 22 is used for placing the circuit board to be detected, the first telescopic unit 24 is used for driving the carrier plate 22 to move relative to the opening 11, and the closing plate 23 is used for closing or opening the opening 11.

[0041] The detection structure 3 comprises a ceiling plate 31, a second telescopic unit 32 and a moving frame body 33.

[0042] The top plate 31, the second telescopic unit 32 and the moving frame body 33 are arranged inside the shielding box body 1, the second telescopic unit 32 is fixedly arranged inside the shielding box body 1, the output end of the second telescopic unit 32 is fixedly connected with the moving frame body 33, the top plate 31 is fixedly connected with the moving frame body 33, and the top plate 31 is used for detecting a circuit board placed on the carrier plate 22; and the second telescopic unit 32 is used for driving the top plate 31 to approach or move away from the carrier plate 22.

[0043] In an embodiment of the utility model, the second telescopic unit 32 is vertically arranged inside the shielding box body 1, and the output end of the second telescopic unit 32 is perpendicular to the bottom surface inside the shielding box body 1.

[0044] In an embodiment of the utility model, the lower surface of the moving frame body 33 is provided with at least one guide column 331, the carrier plate 22 is provided with a guide groove 221 matched with the guide column 331, when the top plate 31 descends relative to the carrier plate 22, the guide column 331 is inserted into the corresponding guide groove 221, thereby playing a guiding role, and when the carrier plate 22 does not run in place, the guide column 331 cannot be inserted into the corresponding guide groove 221, thereby playing a role of protecting the top plate.

[0045] In an embodiment of the utility model, the lower surface of the moving frame body 33 is provided with at least one limiting column 332, and the limiting column 332 is used for limiting the descending distance of the top plate 31 relative to the carrier plate 22.

[0046] In an embodiment of the utility model, the circuit board testing fixture further comprises a anti-pinch structure 4, the anti-pinch structure 4 comprises two side plates 41, the side plates 41 are symmetrically arranged on both sides of the opening 11, and the side plates 41 are connected with the shielding box body 1; a horizontal grating 411 is horizontally arranged on each side plate 41, and the horizontal grating 411 is arranged above the opening 11; a vertical grating 412 is vertically arranged on each side plate 41, and the vertical grating 412 is arranged outside the opening 11. The vertical grating 412 and the horizontal grating 411 are used for detecting whether hands or foreign matters are inserted during the process that the carrier plate enters the inside of the shielding box body 1.

[0047] In an embodiment of the utility model, the horizontal grating 411, the vertical grating 412, the first telescopic unit 24 and the second telescopic unit 32 are electrically connected with a PLC controller, and when the vertical grating 412 and the horizontal grating 411 detect that hands or foreign matters are inserted, the PLC controller controls the first telescopic unit 24 to stop running.

[0048] In an embodiment of the utility model, the first telescopic unit 24 and the second telescopic unit 32 are pneumatic telescopic rods or electric telescopic rods.

[0049] In an embodiment of the utility model, the first telescopic unit 24 is perpendicular to the second telescopic unit 32.

[0050] In an embodiment of the utility model, PLC controller and in place switch and buzzer electric connection, in place switch setting in shield box body 1 inside, in place switch is used for detecting whether the carrier plate 22 runs to the place, detecting carrier plate 22 runs to the place buzzer stop, detecting carrier plate 22 has not run to the place buzzer start.

[0051] When carrier plate 22 runs to the place, carrier plate 22 is located below the ceiling 31, and the closure plate 23 seals the opening 11.

[0052] In an embodiment of the utility model, carrier plate 22 is perpendicular to fixed plate 21, and fixed plate 21 is parallel to the bottom surface inside shield box body 1.

[0053] In an embodiment of the utility model, shield box body 1 is hollow cuboid structure.

[0054] In an embodiment of the utility model, the lower surface of ceiling 31 is provided with a plurality of probes, the probe corresponds to the plug-in piece pin of the circuit board placed on carrier plate 22, and the ceiling 31 is in communication connection with the detector outside shield box body 1.

[0055] In an embodiment of the utility model, the detector is a signal controller.

[0056] In an embodiment of the utility model, a plurality of wiring holes 101 are further provided on shield box body 1, and external wiring can pass through wiring hole 101 into shield box body 1 inside.

[0057] In an embodiment of the utility model, a placing groove for placing the circuit board is provided on the carrier plate.

[0058] When the utility model is used, the circuit board to be detected is placed on carrier plate 22, carrier plate 22 is moved on fixed plate 21 by first telescopic unit 24, after carrier plate 22 moves below ceiling 31, closure plate 23 closes opening 11, and the circuit board on carrier plate 22 is detected by second telescopic unit 32 driving ceiling 31 to descend.

[0059] The foregoing has made detailed description to the utility model generally, but on the basis of the utility model, some modifications or improvements can be made, which is obvious to the general technical personnel in the technical field. Therefore, the modification or improvement without departing from the spirit of the utility model idea is within the protection scope of the utility model.

Claims

1. A circuit board test fixture, characterized by: It includes a shielding box, a closing structure and a detection structure, and the front side of the shielding box is provided with an opening; The closing structure includes a fixing plate, a carrying plate, a closing plate and a first telescopic unit; The fixed plate is fixedly arranged horizontally inside the shielding box, and the first telescopic unit is fixedly arranged on the fixed plate; the carrier plate is slidably connected to the fixed plate, the closing plate is fixedly connected to the carrier plate, the telescopic end of the first telescopic unit is connected to the closing plate, the carrier plate is used to place the circuit board to be tested, the first telescopic unit is used to drive the carrier plate to move relative to the opening, and the closing plate is used to close or open the opening; The detection structure includes a top plate, a second telescopic unit, and a movable frame; The top plate, the second telescopic unit and the movable frame are all arranged inside the shielding box. The second telescopic unit is fixedly arranged inside the shielding box. The output end of the second telescopic unit is fixedly connected to the movable frame. The top plate is fixedly connected to the movable frame. The top plate is used to detect the circuit board placed on the carrier board, and the second telescopic unit is used to drive the top plate close to or away from the carrier board.

2. The circuit board test fixture according to claim 1, wherein: At least one guide column is provided on the lower surface of the movable frame, and a guide groove matching the guide column is provided on the carrier plate.

3. The circuit board test fixture according to claim 1, wherein: At least one limiting column is provided on the lower surface of the movable frame, and the limiting column is used to limit the descending distance of the top plate relative to the carrier plate.

4. The circuit board testing fixture according to claim 1, wherein: The circuit board test fixture also includes an anti-pinch structure, which includes two side panels, which are symmetrically arranged on both sides of the opening and connected to the shielding box; a horizontal grating is horizontally arranged on each side panel, and the horizontal grating is arranged above the opening; a vertical grating is vertically arranged on each side panel, and the vertical grating is arranged outside the opening.

5. The circuit board testing fixture according to claim 4, wherein: The horizontal grating, the vertical grating, the first telescopic unit and the second telescopic unit are electrically connected to the PLC controller respectively.

6. The circuit board testing fixture according to claim 5, wherein: The PLC controller is electrically connected to the in-position switch and the buzzer. The in-position switch is arranged inside the shielding box. The in-position switch is used to detect whether the carrier board has run into position.

Images