CN218938431U

CN218938431U - Core board production testing device

Info

Publication number: CN218938431U
Application number: CN202222968090.6U
Authority: CN
Inventors: 廖俊贤
Original assignee: Guangzhou Lingmou Technology Co ltd
Current assignee: Guangzhou Lingmou Technology Co ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-04-28
Anticipated expiration: 2032-11-08

Abstract

The utility model belongs to the technical field of circuit board test equipment, in particular to a core board production test device which comprises a test box and a pressing mechanism, wherein a test circuit board is arranged in the test box, and test pins corresponding to all external terminals on the tested core board are arranged on the test circuit board; the test box is provided with a support for placing the core board, a test groove matched with the core board is formed in the support, a perforation corresponding to a test pin is formed in the bottom of the test groove, a supporting spring is arranged between the support and the test box, the support is pressed, the top end of the test pin penetrates out of the perforation correspondingly, when a newly produced core board is tested, the core board is pressed by the pressing mechanism, the support is pressed down again by the core board, the test terminal is exposed and electrically connected with the core board, and under the action of the reaction force of the supporting spring, the external connection terminal at the bottom of the core board can be electrically connected with the test pin on the test box well, so that the test box is suitable for testing the working condition of the core board with a plurality of external connection terminals.

Description

Core board production testing device

Technical Field

The utility model belongs to the technical field of circuit board testing equipment, and particularly relates to a core board production testing device.

Background

I have designed and developed an embedded main control board, and this main control board can carry out secondary development through connecting different peripheral hardware to realize more complicacy, for example carry out functions such as real-time image detection, discernment through connecting the camera. The main control board is divided into a core board and a bottom board, the production processes of the two parts are separated, the core board is required to be tested after production to check the production quality, and the core board and the bottom board are assembled together after passing the test.

In the field of circuit board development, aiming at different circuit boards, different testing equipment is adopted, and Chinese patent literature with publication number of CN206906535U describes a testing device of a printed circuit board, and the testing device of the printed circuit board drives a flying needle to be connected to a circuit board to be tested through a sliding block, so that the testing device is suitable for testing whether pins are normal or not, and whether the whole circuit board can work or not can not be tested; the Chinese patent document with publication number of CN103675583A describes a single-sided printed circuit board open circuit and short circuit testing device which is suitable for short circuit testing and full open circuit testing of a circuit board to be tested, and can not test whether the circuit board can work or not.

In addition, the test pins of the current circuit board testing device are lapped with the terminals on the circuit board to be tested to form contact, and the contact mode is not tight, so that if the pins of the circuit board to be tested are relatively many, it is difficult to ensure that each test pin of the testing device and each terminal on the circuit board to be tested form good electrical connection.

Disclosure of Invention

The utility model aims to provide a core board production testing device which solves the technical problem that in the prior art, when a tested circuit board is provided with a plurality of terminals, a plurality of test pins of the testing device are difficult to ensure that good electrical connection is formed between the test pins and the terminals.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the device comprises a test box and a pressing mechanism, wherein a test circuit board is arranged in the test box, and test pins corresponding to all external terminals on the tested core board are arranged on the test circuit board; the test box is provided with a support for placing the core plate, a test groove matched with the core plate is arranged in the support, and the bottom of the test groove is provided with a perforation corresponding to the test pin; a supporting spring is arranged between the support and the test box, the support is pressed, and the top ends of the test pins correspondingly penetrate out of the through holes; the compressing mechanism comprises a support arranged on the test box, a driving assembly is arranged on the support, a compressing plate is arranged on the driving assembly, at least one part of the compressing plate is located above the test groove, and the driving assembly is used for driving the compressing plate to move up and down.

Preferably, the driving assembly comprises a rocker, a connecting rod, a supporting seat and a pull rod, the pressing plate is arranged at the bottom of the pull rod, the supporting seat is arranged on the support, a supporting rod is arranged at the upper side of the supporting seat, a limiting rod is arranged at the lower side of the supporting seat, a limiting sleeve is arranged at the bottom of the limiting rod, the pull rod penetrates through the limiting sleeve, the front end of the rocker is hinged to the supporting rod, one end of the connecting rod is hinged to the top of the pull rod, and the other end of the connecting rod is hinged to the middle of the rocker.

Preferably, the support is provided with a guide rod, the compacting plate is provided with a sliding sleeve, and the sliding sleeve is arranged on the guide rod.

Preferably, the terminals of the test circuit board are electrically connected with the corresponding test pins, and the test box is further provided with a reset button and a debugging button which are electrically connected with the test circuit board.

Preferably, the test box is provided with a power interface and a main switch, the test circuit board is provided with a power circuit, the power circuit is electrically connected to the power interface through the main switch, and the output end of the power circuit is connected to a corresponding test pin.

Preferably, an external device is arranged on the test box, and the external device comprises a display screen and a camera; the test circuit board is provided with a loudspeaker driving circuit, a display screen driving circuit, a camera driving circuit and a USB interface which are correspondingly and electrically connected to the test pins, wherein the loudspeaker driving circuit, the display screen driving circuit and the camera driving circuit are respectively and electrically connected with a loudspeaker interface, a display screen interface and a camera interface, and the display screen and the camera are electrically connected with the display screen interface and the camera interface.

Compared with the prior art, the utility model has the beneficial effects that: the core board production testing device comprises a testing box and a pressing mechanism, wherein a testing circuit board is arranged in the testing box, and testing pins corresponding to all external terminals on the tested core board are arranged on the testing circuit board; the test box is provided with a support for placing the core board, a test groove matched with the core board is formed in the support, a perforation corresponding to a test pin is formed in the bottom of the test groove, a supporting spring is arranged between the support and the test box, the support is pressed, the top end of the test pin penetrates out of the perforation correspondingly, when a newly produced core board is tested, the core board is pressed by the pressing mechanism, the support is pressed down again by the core board, the test terminal is exposed and electrically connected with the core board, and under the action of the reaction force of the supporting spring, the external connection terminal at the bottom of the core board can be electrically connected with the test pin on the test box well, so that the test box is suitable for testing the working condition of the core board with a plurality of external connection terminals.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

fig. 1 is a schematic perspective view of an embodiment of a device for testing production of a core board according to the present utility model.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic view of a core board production test apparatus according to an embodiment of the present utility model, in which the support is pressed downward.

Fig. 4 is an enlarged view of a portion B of fig. 3.

Fig. 5 is a schematic diagram of an embodiment of a device for testing production of a core board according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In one embodiment, a core board production test apparatus is provided, please refer to fig. 1-5.

As shown in fig. 1, the core board production test device comprises a test box 1 and a pressing mechanism, wherein the pressing mechanism is arranged on the test box 1, a test circuit board is arranged in the test box 1, and the test box 1 is used for testing with a newly produced core board.

The test circuit board is provided with test pins corresponding to the external terminals on the tested core board, the number and layout of the test pins are set according to the number and arrangement mode of the external terminals on the bottom surface of the core board, and the external terminals on the bottom surface of the core board can be pins for patch welding.

As shown in fig. 1 and 2, a support 3 for placing a core board is provided on the test box 1, a test slot 31 matched with the core board is provided in the support 3, a through hole 311 corresponding to each test pin is provided at the bottom of the test slot 31, a support spring 32 is provided between the support 3 and the test box 1, and a guide rod is provided in the support spring 32, so that the support 3 is pressed and the support 3 moves vertically up and down on the test box 1.

As shown in fig. 3 and 4, when the support 3 is pressed, the tips of the test pins 2 pass out of the corresponding through holes 311, at which time the test pins can be electrically connected to the core board to be tested for testing.

The test pins 2 are arranged in the test slots and are placed in the test slots 31 when the core board is tested, so that the external terminals on the bottom surface of the core board are electrically connected with the respective test pins.

As shown in fig. 1, the pressing mechanism includes a support 4 disposed on the test box 1, a driving component is disposed on the support 4, the driving component is a manual mechanism, a pressing plate 5 is disposed on the driving component, the pressing plate 5 is in a T shape, a front portion of the pressing plate 5 is located above a test slot of the support 3, the driving component is used for driving the pressing plate 5 to move up and down, so that a core board in a test can be pressed down, the core board is a circuit board, the core board presses the support 3 again, and the support 3 moves downward, so that the test pins 2 are exposed and electrically connected with the core board.

The terminals at the bottom of the core board are brought into good electrical connection with the test pins on the test cartridge 1 due to the reaction force of the support springs 32.

As shown in FIG. 1, the driving assembly comprises a rocker 41, a connecting rod 42, a supporting seat 43 and a pull rod 44, wherein the rear part of the rocker 41 is provided with a handle for holding and rotating up and down, the supporting seat 43 is arranged on a bracket 4, a supporting rod 431 is arranged on the upper side of the supporting seat 43, a limiting rod 432 is arranged on the lower side of the supporting seat, the supporting rod 431 plays a supporting role, a limiting sleeve 433 is arranged at the bottom of the limiting rod 432, the pull rod 44 penetrates through the limiting sleeve 433, a pressing plate 5 is fixedly arranged at the bottom of the pull rod 44, the front end of the rocker 41 is hinged on the supporting rod 431, one end of the connecting rod 42 is hinged at the top of the pull rod 44, the other end of the connecting rod is hinged at the middle part of the rocker 41, and the pressing plate 5 can be driven to move up and down by holding the rocker 41.

As shown in fig. 1, two guide rods 45 are further arranged on the support 4, sliding sleeves 51 are correspondingly arranged on the compacting plates 5, and the sliding sleeves 51 are arranged on the guide rods 45 to ensure that the compacting plates 5 move up and down along the vertical direction.

The terminals of the test circuit board in the test box 1 are electrically connected with corresponding test pins, as shown in fig. 1 and 5, a reset button 11 and a debug button 12 which are electrically connected with the test circuit board are further arranged on the test box 1, the reset button 11 and the debug button 12 are respectively electrically connected to the test circuit board in the test box 1 through corresponding wires, the reset button 11 is used for controlling the restarting of the core board, and the debug button 12 is used for controlling the downloading of the test program by the core board.

As shown in fig. 1 and 5, a power interface 14 and a main switch 16 are provided on the test box 1, a power circuit is provided on the test circuit board, the power circuit is electrically connected to the power interface 14 through the main switch 16, the power interface 14 is connected to the mains supply through a power line, the output end of the power circuit supplies power to the test circuit board, and the output end of the power circuit is connected to a corresponding test pin to supply power to the core board under test.

As shown in fig. 1 and 5, an external device is arranged on the test box 1, the external device comprises a display screen 6 and a camera 13, and the camera 13 is a binocular camera and mainly used for adapting to the test requirement of a core board.

The test circuit board is provided with a loudspeaker driving circuit, a display screen driving circuit, a camera driving circuit and two USB interfaces which are correspondingly and electrically connected to the test pins, wherein the loudspeaker driving circuit, the display screen driving circuit and the camera driving circuit are also respectively and electrically connected with a loudspeaker interface, a display screen interface and a camera interface, and the display screen 6 and the camera 13 are electrically connected with the display screen interface and the camera interface. When testing the core board, a loudspeaker is also arranged, and the loudspeaker is connected to the loudspeaker interface.

The core board is provided with an OTG pin, a loudspeaker pin, a DSI pin, a CSI pin and a USB pin, wherein the loudspeaker driving circuit, the display screen driving circuit, the camera driving circuit and the two USB interfaces are respectively and electrically connected to the loudspeaker pin, the DSI pin, the CSI pin, the OTG pin and the USB pin, the USB interface 15 connected with the OTG pin is used for externally connecting a computer, the testing process and the result are controlled and checked through the computer, and the other USB interface is connected with the USB flash disk to check whether the reading is normal or not.

Like this, the core board can be connected to peripheral hardware such as display screen 6, camera 13, loudspeaker, USB flash disk through test stitch electricity, and whether the test can control display screen 6, camera 13, loudspeaker, USB flash disk etc. and establish work outward.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The core board production testing device is characterized by comprising a testing box and a pressing mechanism, wherein a testing circuit board is arranged in the testing box, and testing pins corresponding to all external terminals on the tested core board are arranged on the testing circuit board; the test box is provided with a support for placing the core plate, a test groove matched with the core plate is arranged in the support, and the bottom of the test groove is provided with a perforation corresponding to the test pin; a supporting spring is arranged between the support and the test box, the support is pressed, and the top ends of the test pins correspondingly penetrate out of the through holes; the compressing mechanism comprises a support arranged on the test box, a driving assembly is arranged on the support, a compressing plate is arranged on the driving assembly, at least one part of the compressing plate is located above the test groove, and the driving assembly is used for driving the compressing plate to move up and down.

2. The core board production test apparatus of claim 1, wherein: the driving assembly comprises a rocker, a connecting rod, a supporting seat and a pull rod, the pressing plate is arranged at the bottom of the pull rod, the supporting seat is arranged on the support, a supporting rod is arranged at the upper side of the supporting seat, a limiting rod is arranged at the lower side of the supporting seat, a limiting sleeve is arranged at the bottom of the limiting rod, the pull rod penetrates through the limiting sleeve, the front end of the rocker is hinged to the supporting rod, one end of the connecting rod is hinged to the top of the pull rod, and the other end of the connecting rod is hinged to the middle of the rocker.

3. The core board production test apparatus of claim 1, wherein: the support is provided with a guide rod, the compacting plate is provided with a sliding sleeve, and the sliding sleeve is arranged on the guide rod.

4. The core board production test apparatus of claim 1, wherein: the terminal of the test circuit board is electrically connected with the corresponding test pin, and the test box is also provided with a reset button and a debugging button which are electrically connected with the test circuit board.

5. The core board production test apparatus of claim 4, wherein: the test box is provided with a power interface and a main switch, the test circuit board is provided with a power circuit, the power circuit is electrically connected to the power interface through the main switch, and the output end of the power circuit is connected to a corresponding test pin.

6. The core board production test apparatus of claim 1, wherein: an external device is arranged on the test box and comprises a display screen and a camera; the test circuit board is provided with a loudspeaker driving circuit, a display screen driving circuit, a camera driving circuit and a USB interface which are correspondingly and electrically connected to the test pins, wherein the loudspeaker driving circuit, the display screen driving circuit and the camera driving circuit are respectively and electrically connected with a loudspeaker interface, a display screen interface and a camera interface, and the display screen and the camera are electrically connected with the display screen interface and the camera interface.