CN210514380U - Circuit board function test fixture - Google Patents

Abstract

A circuit board function test fixture comprises a control box, a test support and a quick clamp assembly. The test support includes the support, accomodate the basket, locating piece and test pressure head, fast clamp assembly includes spacing panel, flip, dodge gate and metal paster, spacing panel mounting is on the control box, it accomodates the chamber to have seted up on the spacing panel, the metal paster sets up on accomodating the inner wall in chamber, and the metal paster is connected with the control box electricity, the flip holding is in accomodating the intracavity, and flip's first end is articulated with spacing panel, the spout has been seted up to flip's second end, test support and fast clamp assembly all are connected with the control box electricity, the mainboard of the circuit board that awaits measuring, circuit connection is accomplished promptly after subplate and touch-sensitive screen are fixed, save the wiring operation that the circuit board detected time measuring, fast clamp assembly is the special quick-speed structure of touch-sensitive screen, can fast switch the touch-sensitive screen that awaits measuring, and the.

Description

Circuit board function test fixture

Technical Field

The utility model relates to a circuit board field of making especially relates to a circuit board functional test tool.

Background

SMT is an electronic connection technology for directly attaching and soldering surface-mounted components such as resistors, capacitors, inductors and the like to the surface of a circuit board by using professional automatic assembly equipment such as a solder paste printer, a chip mounter, reflow soldering and the like, and is the most popular technology and process in the electronic assembly industry at present. The PCBA board is a product formed after the PCB board is subjected to component loading or subjected to DIP (dual in-line package) by an SMT (surface mount technology) process. The PCBA board manufactured by the SMT process needs to be subjected to performance testing and then packaged and delivered out of a warehouse.

As shown in fig. 1, a product 20 includes a main board 21, a sub board 22 and a touch screen 23, the sub board 22 and the touch screen 23 are electrically connected to the main board 21, the main board 21 is used for performing data calculation and sending control signals to devices, the sub board 22 and the touch screen 23 are used as human-computer interfaces, a user inputs the control signals to the main board 21 through function keys on the sub board 22 and the touch screen 23, the main board 21 outputs electric signals matched with the control signals of the sub board 22 and the touch screen 23 according to the control signals, and the external devices are controlled by the electric signals to operate as expected by the user. And the mainboard 21, the subplate 22 and the touch screen 23 are all PCBA boards, signal communication is carried out among the mainboard 21, the subplate 22 and the touch screen 23 through cables, before the product 20 leaves a factory, the mainboard 21, the subplate 22 and the touch screen 23 on the product need to be tested respectively, and signal interaction test is carried out after the mainboard 21, the subplate 22 and the touch screen 23 are connected with each other, so that whether the mainboard 21 can normally communicate with the subplate 22 and the touch screen 23 or not is tested, and whether the mainboard 21 can output correct electric signals or not is tested.

The existing functional test fixture adopts a discharge method to detect the product 20, namely, the main board 21, the auxiliary board 22 and the touch screen 23 are sequentially butted with a standard product, the functional integrity of the main board 21, the auxiliary board 22 and the touch screen 23 is independently judged, and when the discharge method is used for detection, the main board 21, the auxiliary board 22 and the touch screen 23 need to be replaced in turn, for example, when the main board 21 is detected, the qualified auxiliary board 22 and the touch screen 23 are installed into the functional test fixture, the main board 21 to be detected is sequentially placed into the fixture for detection, and the detection of the auxiliary board 22 and the touch screen 23 also adopts the same mode.

However, when the functional test fixture is used for testing, it is necessary to perform a wiring operation on the main board 21, the sub-board 22 and the touch screen 23, especially to perform a wiring operation on the touch screen 23 and the main board 21, where the wiring position of the touch screen 23 is located on the back of the operation panel, and it is necessary to ensure that the operation panel of the touch screen 23 faces a tester during detection, that is, a turn-over operation is required when the touch screen 23 is wired, and the turning-over process easily causes the cables between the touch screens 23 to be loosened, which leads to misjudgment, and the wiring operation is time-consuming, which affects the test efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, provide a circuit board functional test tool, save the wiring operation that the circuit board examined time measuring, and set up special quick clamping structure, but the fast switch-over touch-sensitive screen that awaits measuring improves efficiency of software testing to overcome the erroneous judgement phenomenon that leads to because of the wiring problem.

The purpose of the utility model is realized through the following technical scheme:

a circuit board function test fixture includes: the test device comprises a control box, a test support and a quick clamp assembly;

the test support comprises a support, a containing basket, a positioning block and a test pressure head, the support, the containing basket and the positioning block are all installed on the outer side wall of the control box, the test pressure head is arranged on the support and faces the containing basket, and the containing basket, the positioning block and the test pressure head are all electrically connected with the control box;

the quick clamping assembly comprises a limiting panel, a turnover cover, a movable door and a metal patch, wherein the limiting panel is installed on the control box, a containing cavity is formed in the limiting panel, the metal patch is arranged on the inner wall of the containing cavity and is electrically connected with the control box, the turnover cover is contained in the containing cavity, the first end of the turnover cover is hinged to the limiting panel, the second end of the turnover cover is provided with a sliding groove, the sliding groove is used for containing the touch screen, the movable door is arranged on the limiting panel, and the movable door is used for covering the containing cavity.

In one embodiment, the limiting panel is provided with a turnover limiting block, the turnover limiting block is located on the inner side wall of the accommodating cavity, and the turnover limiting block is used for abutting against the turnover cover.

In one embodiment, an empty avoiding groove is formed in the edge of the turnover cover, and the turnover limiting block is used for being abutted against the inner side wall of the empty avoiding groove.

In one embodiment, the quick clamping assembly further comprises a torsion spring, the first end of the torsion spring is abutted to the turnover cover, the second end of the torsion spring is abutted to the inner side wall of the containing cavity, and the torsion spring is used for pushing the turnover second end to turn over in the direction away from the containing cavity.

In one embodiment, the quick clamping assembly further comprises a sliding block, the sliding block is slidably arranged on the limiting panel, and the sliding block is used for being abutted to the outer wall of the flip cover.

In one embodiment, the outer wall of the sliding block is provided with anti-slip stripes.

In one embodiment, a magnet is embedded in the movable door and used for adsorbing the limiting panel.

In one embodiment, a buffer rubber pad is arranged on the outer wall of the limiting panel.

In one embodiment, the sliding groove is provided with an auxiliary latch.

In one embodiment, the auxiliary latch is provided in plurality.

Above-mentioned circuit board functional test tool is through setting up the control box, test support and fast clamp subassembly all are connected with the control box electricity, and circuit connection is accomplished promptly after the mainboard of the circuit board that awaits measuring, subplate and touch-sensitive screen are fixed, saves the wiring operation when the circuit board detects, and fast clamp subassembly is the special quick clamping structure of touch-sensitive screen, but the fast switch-over touch-sensitive screen that awaits measuring, improves efficiency of software testing to overcome the erroneous judgement phenomenon that leads to because of the wiring problem.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a product to be tested;

fig. 2 is a schematic structural view of a circuit board function testing fixture according to an embodiment of the present invention;

fig. 3 is an exploded view of a quick clamping assembly according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In one embodiment, a circuit board function testing fixture includes: the test device comprises a control box, a test support and a quick clamp assembly; the test support comprises a support, a containing basket, a positioning block and a test pressure head, the support, the containing basket and the positioning block are all arranged on the outer side wall of the control box, the test pressure head is arranged on the support and is arranged towards the containing basket, and the containing basket, the positioning block and the test pressure head are all electrically connected with the control box; the quick clamping component comprises a limiting panel, a turnover cover, a movable door and a metal patch, wherein the limiting panel is installed on the control box, a containing cavity is formed in the limiting panel, the metal patch is arranged on the inner wall of the containing cavity and is electrically connected with the control box, the turnover cover is contained in the containing cavity, the first end of the turnover cover is hinged to the limiting panel, the second end of the turnover cover is provided with a sliding groove, the sliding groove is used for containing the touch screen, the movable door is arranged on the limiting panel, and the movable door is used for covering the containing cavity.

In order to better explain the circuit board function test fixture, the concept of the circuit board function test fixture is better understood. Referring to fig. 2, a circuit board function testing fixture 10 is used for performing a function test on a product 20, and includes: control box 100, test support 200, and quick-clamp assembly 300. The test support 200 and the quick clamping assembly 300 are arranged on the control box 100, the test support 200 is used for positioning the main board 21 and the auxiliary board 22 of the product 20, the quick clamping assembly 300 is used for positioning the touch screen 23 of the product 20, the test support 200 and the quick clamping assembly 300 are electrically connected with the control box 100, after the main board 21, the auxiliary board 22 and the touch screen 23 are installed in the circuit board function test fixture 10, the auxiliary board 22 and the touch screen 23 are already electrically connected with the main board 21, the wiring step is omitted, the quick clamping assembly 300 simplifies the clamping mode of the touch screen 23, the test efficiency is improved, and misjudgment caused by misoperation during wiring is avoided.

Referring to fig. 2, the test socket 200 includes a bracket 210, a receiving basket 220, a positioning block 230, and a test ram 240, wherein the bracket 210, the receiving basket 220, and the positioning block 230 are all installed on an outer sidewall of the control box 100, the test ram 240 is disposed on the bracket 210, the test ram 240 is disposed toward the receiving basket 220, and the receiving basket 220, the positioning block 230, and the test ram 240 are all electrically connected to the control box 100. The accommodating basket 220 is used for accommodating the main board 21, the positioning block 230 is used for accommodating the auxiliary board 22, and the testing pressure head 240 is provided with a probe which is used for contacting with a testing point on the main board 21, supplying power to the main board 21 and enabling the main board 21 to enter a testing state. In addition, electrical connectors are contained in the storage basket 220 and the positioning block 230, and when the main board 21 and the sub board 22 are placed in the storage basket 220 and the positioning block 230, the connection terminals on the main board 21 and the sub board 22 are in contact with the electrical connectors to realize electrical connection, so that external wiring operation is not required.

Referring to fig. 3, the quick clamping assembly 300 includes a limiting panel 310, a flip cover 320, a movable door 330 and a metal patch 340, the limiting panel 310 is installed on the control box 100, the limiting panel 310 is provided with a receiving cavity 311, the metal patch 340 is disposed on an inner wall of the receiving cavity 311, the metal patch 340 is electrically connected to the control box 100, the flip cover 320 is accommodated in the receiving cavity 311, a first end of the flip cover 320 is hinged to the limiting panel 310, a second end of the flip cover 320 is provided with a sliding slot, the sliding slot is used for accommodating the touch screen 23, the movable door 330 is disposed on the limiting panel 310, and the movable door 330 is used for covering the receiving cavity 311. The touch screen 23 to be tested is inserted into the flip cover 320 along the sliding groove, the flip cover 320 is pushed, the wiring position of the back of the touch screen 23 is attached to the metal patch 340 when the flip cover 320 enters the accommodating cavity 311, the touch screen 23 is further electrically connected with the control box 100, even if the touch screen 23 is electrically connected with the main board 21, wiring is not needed, complex clamping operation is not needed, the clamping efficiency of the touch screen 23 is improved, and therefore the testing efficiency of a circuit board is improved.

The working principle of the above-mentioned circuit board function testing fixture 10 is described as follows:

taking the functional test of the touch screen 23 as an example:

firstly, respectively loading a qualified main board 21 and a qualified auxiliary board 22 into the containing basket 220 and the positioning block 230, wherein the auxiliary board 22 is electrically connected with the main board 21 to complete the preparation operation;

then, the movable door 330 is opened, the second end of the flip cover 320 rotates relative to the limiting panel 310 until the sliding slot on the flip cover 320 faces the operator, the touch screen 23 to be tested is inserted along the inner wall of the sliding slot, the touch screen 23 is fixed in the flip cover 320, the flip cover 320 is pushed, the flip cover 320 enters the accommodating cavity 311 again, at this time, the wiring position on the back of the touch screen 23 is attached to the metal patch 340, and the touch screen 23 to be tested is electrically connected with the qualified main board 21.

Then, the testing ram 240 is started to lower the testing ram 240, the probes on the testing ram 240 contact with the testing points on the main board 21 to enable the main board 21 to enter a testing state, the virtual buttons on the touch screen 23 are sequentially touched, at this time, the control box 100 collects the output electrical signals of the main board 21 to judge whether the touch screen 23 is in normal communication with the main board 21, and the operator observes whether the touch screen 23 normally displays image information.

After the test is completed, the movable door 330 is opened again, so that the second end of the flip 320 is flipped out of the accommodating cavity 311 again, the touch screen 23 to be tested in the flip 320 is taken out and replaced by a new touch screen 23 to be tested, and the test is continued.

Similarly, for the function test of the main board 21 and the auxiliary board 22, the test operation can be completed only by replacing the corresponding qualified product and repeating the above operations to replace the main board 21 or the auxiliary board 22 to be tested.

After the parts to be tested of the product 20 are sequentially replaced, the test operation of the product 20 can be completed.

Further, referring to fig. 2 and fig. 3, in order to prevent the touch screen 23 from sliding out due to an excessively large flip angle of the flip cover 320, the limiting panel 310 is provided with a flip limiting block 312, the flip limiting block 312 is located on an inner side wall of the accommodating cavity 311, the flip limiting block 312 is used for abutting against the flip cover 320, an empty avoiding groove 321 is formed in an edge of the flip cover 320, and the flip limiting block 312 is used for abutting against an inner side wall of the empty avoiding groove 321. The turning stopper 312 cooperates with the clearance groove 321 to limit the turning range of the flip cap 320. The spout is provided with supplementary latch, and supplementary latch is provided with a plurality ofly, improves the frictional force between spout and the touch-sensitive screen 23 that awaits measuring, reduces the range that touch-sensitive screen 23 removed in the spout when flip 320 overturns.

Further, referring to fig. 2 and fig. 3, in order to conveniently pick and place the touch screen 23 to be tested, the quick clamping assembly 300 further includes a torsion spring 350 and a slider 360, a first end of the torsion spring 350 abuts against the flip cover 320, a second end of the torsion spring 350 abuts against an inner side wall of the receiving cavity 311, and the torsion spring 350 is used for pushing the second end of the flip to turn in a direction away from the receiving cavity 311. The slider slides and sets up on spacing panel 310, and the slider is used for the outer wall butt with flip 320. The outer wall of the sliding block is provided with anti-skid stripes. The slider 360 is shifted to make the slider 360 keep away from the flip 320, the flip 320 can automatically go out of the containing cavity 311 and turn out under the action of the torsion spring 350, the flip 320 is pressed to make the flip 320 return to the containing cavity 311, the slider 360 is abutted with the flip 320 again to prevent the flip 320 from being separated from the containing cavity 311, the torsion spring 350 and the slider 360 are mutually matched to limit the time for the activity of the flip 320, and the operation of taking and placing the touch screen 23 to be tested is further simplified.

Referring to fig. 2 and 3, in order to improve the structural stability of the device, a magnet is embedded in the movable door 330, the magnet is used for adsorbing the limiting panel 310, and a buffer rubber pad is disposed on the outer wall of the limiting panel 310.

Above-mentioned circuit board functional test tool 10 is through setting up control box 100, test support 200 and fast clamp subassembly 300 all are connected with control box 100 electricity, the mainboard of the circuit board that awaits measuring, circuit connection is accomplished promptly after subplate and the touch-sensitive screen are fixed, save the wiring operation when the circuit board detects, fast clamp subassembly 300 is the special quick clamping structure of touch-sensitive screen, can switch the touch-sensitive screen that awaits measuring fast, and the efficiency of software testing is improved, and overcome the erroneous judgement phenomenon that leads to because of the wiring problem.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides a circuit board functional test tool which characterized in that includes:

a control box for controlling the operation of the device,

the test support comprises a support, a containing basket, a positioning block and a test pressure head, the support, the containing basket and the positioning block are all installed on the outer side wall of the control box, the test pressure head is arranged on the support and faces the containing basket, and the containing basket, the positioning block and the test pressure head are all electrically connected with the control box;

the quick clamping assembly comprises a limiting panel, a flip cover, a movable door and a metal patch, wherein the limiting panel is installed on the control box, a containing cavity is formed in the limiting panel, the metal patch is arranged on the inner wall of the containing cavity and is electrically connected with the control box, the flip cover is contained in the containing cavity, the first end of the flip cover is hinged to the limiting panel, the second end of the flip cover is provided with a sliding groove, the sliding groove is used for containing the touch screen, the movable door is arranged on the limiting panel, and the movable door is used for covering the containing cavity.

2. The circuit board function test fixture of claim 1, wherein the limiting panel is provided with an overturning limiting block, the overturning limiting block is located on the inner side wall of the accommodating cavity, and the overturning limiting block is used for abutting against the flip cover.

3. The circuit board function test fixture of claim 2, wherein an avoiding groove is formed at the edge of the flip cover, and the flip limiting block is used for abutting against the inner side wall of the avoiding groove.

4. The circuit board function test fixture of claim 1, wherein the quick clamping assembly further comprises a torsion spring, a first end of the torsion spring abuts against the flip cover, a second end of the torsion spring abuts against the inner side wall of the containing cavity, and the torsion spring is used for pushing the second end of the flip cover to turn towards a direction away from the containing cavity.

5. The circuit board function test fixture of claim 1, wherein the quick clamping assembly further comprises a sliding block, the sliding block is slidably disposed on the limiting panel, and the sliding block is used for abutting against the outer wall of the flip cover.

6. A circuit board function test fixture according to claim 5, characterized in that the outer wall of the slider is provided with anti-slip stripes.

7. The circuit board function test fixture of claim 1, wherein a magnet is embedded in the movable door, and the magnet is used for adsorbing the limiting panel.

8. The circuit board function test fixture of claim 1, wherein the outer wall of the limiting panel is provided with a buffer rubber pad.

9. The circuit board function test fixture of claim 1, wherein the sliding groove is provided with an auxiliary latch.

10. The circuit board function test fixture of claim 9, wherein a plurality of auxiliary latches are provided.

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