Auxiliary device for testing printed circuit board

Abstract

The utility model relates to the technical field of printed circuit board testing, and particularly discloses an auxiliary device for testing a printed circuit board, which is matched with a tester for use. Comprising a base which is provided with a contact pin assembly and is communicated with a tester, a support frame which is arranged on the base, a vertical driving assembly which is arranged on the support frame and is used for controlling a printed circuit board to be contacted and communicated with the contact pin assembly, and a tray which is arranged on the base and is used for placing the printed circuit board, the tray is provided with a through hole corresponding to the contact pin assembly. Compared with the prior art, electrical interconnection can be realized by controlling the printed circuit board and the contact pin assembly to be conducted through the vertical driving assembly; the problems of core wire breakage, pin abrasion, long operation time and the like caused by a connection cable plugging mode are avoided, and the producibility and the efficiency of batch testing are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printed circuit board testing, and more specifically, to an auxiliary device for printed circuit board testing. Background Art

[0002] For network communication electronic products, usually a printed circuit board contains chips such as DSP, CPLD, and FPGA. After program downloading to multiple chips during testing, various function tests are then carried out.

[0003] In the prior art, when conducting functional tests on printed circuit boards during the product development process, it is usually necessary to produce chassis, power supply components, interface components, various connection cables, etc. in advance, then install the printed circuit board to be tested into the whole machine, connect various cables, and finally carry out program downloading, program destruction, and functional tests. This testing method requires plugging and unplugging a lot of connection cables, which is prone to plugging errors. When batch testing printed circuit boards, problems such as core wire breakage, poor contact or damage of pins due to wear often occur after the connection cables on the whole machine are plugged and unplugged multiple times.

[0004] This testing method not only has poor operability but also very low efficiency. The plugging and unplugging of connection cables account for more than one-third of the entire testing process. Additionally, the testing method using the whole machine chassis as a testing tooling also increases production costs, and using the product whole machine as a testing tooling does not have universality. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an auxiliary device for printed circuit board testing;

[0006] The solution adopted by the utility model to solve the technical problem is:

[0007] An auxiliary device for printed circuit board testing, used in cooperation with a tester, includes a base provided with a contact pin assembly and communicated with the tester, a support frame installed on the base, a vertical driving assembly installed on the support frame and used to control the contact and communication between the printed circuit board and the contact pin assembly, and a tray installed on the base and used to place the printed circuit board; through holes corresponding to the contact pin assembly are provided on the tray.

[0008] In some possible implementation manners, the base is in a box structure and has an opening at the top for cooperating with the tray; the tray includes a tray board adapted to the size of the opening and provided with through holes, and a flange provided on the outside of the tray board and installed on the base; the tray board passes through the opening and is located inside the base.

[0009] In some possible embodiments, the base includes a body provided with an installation cavity, and a top plate installed on the top of the body and provided with an opening; the contact pin assembly is installed in the installation cavity.

[0010] In some possible embodiments, a groove for installing a printed circuit board is provided on the pallet, and the through hole is arranged in the groove;

[0011] In some possible embodiments, dampers are provided at the bottom of the convex edge.

[0012] In some possible embodiments, a power conversion module connected to the contact pin assembly is further provided in the installation cavity; a test button connected to the contact pin assembly, a connection socket connected to the contact pin assembly and used for injecting programs or simulation software, an input power socket connected to the power conversion module, and a network interface are further provided on the body; the tester is connected to the network interface.

[0013] In some possible embodiments, the vertical driving assembly includes a support installed on the support frame and located above the base, a guide rod slidably matched with the support and arranged vertically, a driving assembly hinged to the support and the guide rod respectively, and a pressing plate connected to the bottom of the guide rod and located above the tray.

[0014] In some possible embodiments, the driving assembly includes a driving rod hinged to the support and located above the guide rod, and a connecting rod hinged to the driving rod and the end of the guide rod far from the pressing plate respectively.

[0015] In some possible embodiments, the vertical driving assembly further includes a vertical rod installed on the base and arranged vertically; a guide hole slidably matched with the vertical rod is provided on the pressing plate.

[0016] In some possible embodiments, a pressing column is provided on one side of the pressing plate away from the guide rod.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] Compared with the prior art, the present utility model can realize electrical interconnection by controlling the connection and conduction between the printed circuit board and the contact pin assembly through the vertical driving assembly; it avoids problems such as core wire breakage, pin wear, and long operation time caused by the plugging and unplugging of connection cables, and greatly improves the productivity and efficiency of batch testing;

[0019] The present utility model does not need to test the whole machine, which greatly reduces the cost;

[0020] The present utility model can realize the testing of different printed circuit boards by replacing different pressing plates and trays according to the printed circuit board, and has universality;

[0021] The utility model has a simple structure and strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the utility model;

[0023] Figure 2 is a schematic structural diagram of the support, guide rod, drive rod and connecting rod in the utility model;

[0024] Figure 3 is a schematic structural diagram of the pressing plate in the utility model;

[0025] Figure 4 is a schematic structural diagram of the tray in the utility model;

[0026] Figure 5 is a schematic structural diagram of the base in the utility model;

[0027] Figure 6 is a schematic diagram of the connection relationship between the printed circuit board and the base during testing;

[0028] Wherein: 1, base; 10, contact pin assembly; 11, body; 111, installation cavity; 112, signal lamp; 113, test button; 114, connection socket; 115, network interface; 116, power control switch; 117, power conversion module; 118, input power socket; 2, support frame; 3, vertical drive assembly; 31, support; 32, guide rod; 33, drive assembly; 331, drive rod; 332, connecting rod; 34, pressing plate; 341, pressing column; 4, tray; 41, tray board; 42, flange; 43, damper; 100, printed circuit board; 200, tester. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components. The "first", "second" and similar terms mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "one" do not indicate a quantity limitation, but indicate that there is at least one. In the implementation of this application, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of this application, unless otherwise stated, the meaning of "plurality" refers to two or more. For example, a plurality of positioning posts means two or more positioning posts. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] The following provides a detailed description of the present utility model.

[0031] As Figures 1-6 shown:

[0032] An auxiliary device for testing a printed circuit board 100, which is used in cooperation with a tester 200, includes a base 1 provided with a contact pin assembly 10 and in communication with the tester 200, a support frame 2 mounted on the base 1, a vertical drive assembly 3 mounted on the support frame 2 and used to control the contact and connection between the printed circuit board 100 and the contact pin assembly 10, and a tray 4 mounted on the base 1 and used to place the printed circuit board 100; a through hole corresponding to the contact pin assembly 10 is provided on the tray 4.

[0033] During use, the printed circuit board 100 is installed on the tray 4, and a force is applied to the printed circuit board 100 through the vertical drive assembly 3, so that the printed circuit board 100 is in contact and conduction with the contact pin assembly 10; then the tester 200 can be used for testing, and the testing includes program download testing, program destruction testing and function testing.

[0034] In the present utility model, the contact pin assembly 10 and the printed circuit board 100 achieve electrical interconnection under the action of the vertical drive assembly 3, avoiding problems such as core wire breakage caused by the plugging and unplugging of connection cables, wear of the pins, and long operation time; at the same time, there is no need to test the entire machine; the testing is simpler and more convenient.

[0035] In some possible embodiments, the base 1 has a box structure and an opening is provided at the top for cooperating with the tray 4; the tray 4 includes a tray board 41 adapted to the size of the opening and provided with through holes, and a flange 42 provided outside the tray board 41 and mounted on the base 1; the tray board 41 passes through the opening and is located inside the base 1;

[0036] The tray board 41 is located within the opening, and the boss is located at the top of the base 1 to support the tray board 41, thereby achieving the support for the printed circuit board 100 installed within the tray board 41;

[0037] In some possible embodiments, the base 1 includes a body 11 provided with an installation cavity 111, and a top plate mounted on the top of the body 11 and provided with an opening; the contact pin assembly 10 is installed within the installation cavity 111;

[0038] The opening is provided in the top plate, and the flange 42 acts on the outer side surface of the top plate to support the tray board 41;

[0039] In some possible embodiments, a groove for installing the printed circuit board 100 is provided on the tray board 41, and the through holes are provided within the groove and are correspondingly arranged with the contact pin assembly 10; a damper 43 is provided at the bottom of the flange 42, and the buffer and vibration reduction of the tray 4 are achieved through the setting of the damper 43.

[0040] The printed circuit board 100 is installed within the groove, and through the setting of the through holes, the top end of the contact pin assembly 10 can extend into the groove. After the vertical driving assembly 3 applies a downward acting force to the printed circuit board 100, the contact pin assembly 10 will achieve electrical interconnection with the printed circuit board 100;

[0041] In some possible embodiments, a power conversion module 117 connected to the contact pin assembly 10 is further provided within the installation cavity 111; a test button 113 connected to the contact pin assembly 10 through a cable, a connection socket 114 connected to the contact pin assembly 10 through a cable and used for injecting programs or simulation software, an input power socket 118 connected to the power conversion module 117 through a cable, and a network interface 115 connected to the contact pin assembly 10 through a cable are further provided on the body 11; the tester 200 is connected to the network interface 115;

[0042] Further, a signal lamp 112 and a power control switch 116 connected to the contact pin assembly 10 are provided on the body 11;

[0043] The power conversion module 117 performs conversion according to the requirements of the printed circuit board 100, making the present utility model applicable to the testing of different printed circuit boards 100;

[0044] Preferably, there are two sets of connection sockets 114. One set of connection sockets 114 is used to install with a program burner to realize program injection; the other set of connection sockets 114 is connected to an emulator to realize the injection of simulation software. The connection is simple and convenient, and there is no need to perform wire-changing operations;

[0045] During testing, the power control switch 116 is turned on, the tester 200 is connected to the network interface 115, the printed circuit board 100 is in contact conduction with the contact pin assembly 10, and the signal lamp 112 lights up green. Program and / or simulation software is downloaded and injected, program download and network function testing are carried out, and then the destruction function testing is realized through the test button 113;

[0046] After the test is completed, the power control switch 116 is turned off, the vertical driving component 3 no longer applies a downward force to the printed circuit board 100, and the printed circuit board 100 is removed to complete the test of this group of printed circuit boards 100;

[0047] The test button 113, the connection socket 114, the network interface 115, the power control switch 116, the power conversion module 117, and the input power socket 118 are all prior arts, and their internal structures will not be described in detail here;

[0048] In some possible implementation manners,

[0049] The vertical driving component 3 is mainly used to control the printed circuit board 100 installed on the tray 4 to move towards one side of the base 1 and make contact connection with the contact pin assembly 10 provided in the base 1, so as to realize electrical intercommunication; the vertical driving component 3 can be realized by using any mechanism in the prior art that can realize linear driving, such as an electric push rod, a hydraulic telescopic cylinder, etc.;

[0050] Furthermore, the vertical driving component 3 includes a support 31 installed on the support frame 2 and located above the base 1, a guide rod 32 that is slidably fitted with the support 31 and is arranged vertically, a driving component 33 that is respectively hinged to the support 31 and the guide rod 32, and a pressing plate 34 that is connected to the bottom of the guide rod 32 and is located above the tray 4;

[0051] The support 31 is installed on the base 1 to realize the installation of the driving component and enable the driving component to control the guide rod 32 to move vertically;

[0052] Specifically, a through hole is arranged vertically on the support 31, the guide rod 32 is sleeved in the through hole and can slide vertically under the control of the driving component, so that the printed circuit board 100 installed on the tray 4 can be in contact abutment and conduction with the contact pin assembly 10;

[0053] The setting of the pressing plate 34 enables the printed circuit board 100 to be more evenly stressed, and there will be no damage caused by concentrated acting forces.

[0054] In some possible embodiments, the driving assembly 33 includes a driving rod 331 that is hinged to the support 31 and located above the guiding rod 32, and a connecting rod 332 that is respectively hinged to the driving rod 331 and the end of the guiding rod 32 away from the pressing plate 34;

[0055] One end of the driving rod 331 is hinged to the support 31, one end of the connecting rod 332 is hinged to the middle of the driving rod 331, and the other end of the connecting rod 332 is hinged to the top end of the guiding rod 32; Normally, the driving rod 331 is horizontally arranged. When testing, control the driving rod 331 to move downward around its hinge point with the support 31, drive the connecting rod 332 to move downward, and then make the guiding rod 32 move along the axis toward the side close to the base 1, so as to apply a downward acting force to the printed circuit board 100 located in the tray 41, make the printed circuit board 100 contact the contact pin assembly 10, realize electrical conduction, and then perform the test;

[0056] In some possible embodiments, the vertical driving assembly 3 further includes a vertical rod installed on the base 1 and arranged vertically; A guiding hole that slidably cooperates with the vertical rod is provided on the pressing plate 34;

[0057] The vertical rod is installed on the top plate and slidably cooperates with the guiding hole provided on the pressing plate 34 to realize the sliding guidance of the pressing plate 34;

[0058] Preferably, there are two groups of vertical rods;

[0059] In some possible embodiments, a pressing post 341 is provided on the side of the pressing plate 34 away from the guiding rod 32;

[0060] Preferably, there are multiple groups of pressing posts 341 and they are evenly arranged at the edge position of the pressing plate 34 and correspond to the edge of the printed circuit board 100, so as to prevent the pressing plate 34 from directly contacting the printed circuit board 100 and damaging the components on the printed circuit board 100;

[0061] Furthermore, the shape and size of the groove on the tray 41 correspond one-to-one to the outer contour shape and size of the printed circuit board 100. In this way, for different printed circuit boards 100, only the pressing plate 34 and the tray 4 need to be replaced; This greatly increases the practical performance of the entire device;

[0062] Specifically, the contact pin assembly 10 is detachably installed in the installation cavity 111, and its position in the installation cavity 111 can be adjusted as needed, so as to be applicable to the testing of different printed circuit boards 100.

[0063] The utility model is not limited to the specific embodiments described above. The utility model extends to any new feature disclosed in this specification or any new combination thereof, as well as any new method or process step disclosed or any new combination thereof.

Claims

1. An auxiliary device for testing printed circuit boards, used in conjunction with a tester, characterized in that: It includes a base provided with a contact pin assembly and connected to a tester, a support frame installed on the base, a vertical drive assembly installed on the support frame and used to control the contact and communication between a printed circuit board and the contact pin assembly, and a tray installed on the base and used to place the printed circuit board; the tray is provided with through holes corresponding to the contact pin assembly.

2. The auxiliary device for printed circuit board testing according to claim 1, characterized in that: The base is in a box structure and has an opening on the top for use with a tray; the tray includes a support plate that is adapted to the size of the opening and is provided with a through hole, and a flange that is provided on the outside of the support plate and installed on the base; the support plate passes through the opening and is located inside the base.

3. The auxiliary device for printed circuit board testing according to claim 2, characterized in that: The base comprises a body provided with a mounting cavity, and a top plate installed on the top of the body and provided with an opening; the contact pin assembly is installed in the mounting cavity.

4. The auxiliary device for printed circuit board testing according to claim 2, characterized in that: A groove for mounting a printed circuit board is arranged on the support plate, and the through hole is arranged in the groove.

5. The auxiliary device for printed circuit board testing according to claim 2, characterized in that: A damper is arranged at the bottom of the convex edge.

6. The auxiliary device for printed circuit board testing according to claim 3, characterized in that: A power conversion module connected to the contact pin assembly is also arranged in the installation cavity; a test button connected to the contact pin assembly, a connection socket connected to the contact pin assembly and used for program or simulation software injection, an input power socket connected to the power conversion module, and a network interface are also arranged on the body; The tester is connected to the network interface.

7. The auxiliary device for printed circuit board testing according to claim 1, characterized in that: The vertical drive assembly includes a support mounted on the support frame and located above the base, a guide rod slidably matched with the support and arranged vertically, a drive assembly hinged to the support and the guide rod respectively, and a pressure plate connected to the bottom of the guide rod and located above the tray.

8. The auxiliary device for printed circuit board testing according to claim 7, characterized in that: The driving assembly comprises a driving rod which is hingedly matched with the support and is located above the guide rod, and a connecting rod which is hingedly connected to the driving rod and the end of the guide rod away from the pressure plate.

9. The auxiliary device for printed circuit board testing according to claim 7, characterized in that: The vertical drive assembly also includes a vertical rod installed on the base and arranged vertically; a guide hole slidably matched with the vertical rod is arranged on the pressure plate.

10. The auxiliary device for printed circuit board testing according to claim 6, characterized in that: A pressure column is arranged on a side of the pressure plate away from the guide rod.

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