A half-hole plate test tool of an inclination sensor based on an elastic steel bending needle

Abstract

The utility model relates to test frock technical field, aims at providing a kind of based on elastic steel bending needle's angle sensor half-hole plate test frock, including PCB board and several elastic clamping pieces, wherein, several elastic clamping pieces are fixed on PCB board, and at least two elastic clamping pieces respectively with the two sides half-hole of the half-hole plate to be tested are in contact, for clamping and fixed half-hole plate to be tested, the technical effect of the utility model is: when installing fixed half-hole plate to be tested, it can be directly clamped between the opposite elastic clamping piece, the installation and fixation of half-hole plate are realized by elastic clamping piece and electrically conductive, it is convenient to test angle sensor half-hole plate, and after testing, it is convenient to take down and replace the next half-hole plate to be tested of angle sensor.

Description

Technical Field

[0001] This utility model relates to the field of testing fixture technology, and more specifically, it relates to a tilt sensor half-hole plate testing fixture based on an elastic steel bent needle. Background Technology

[0002] A half-hole PCB typically refers to a PCB with holes designed at the very edge. The hole is then cut in half using a half-hole process, leaving only half of the hole on the PCB. Commonly known as a half-hole or stamp hole, it features a small hole diameter, internal metallized conductivity, and saves connectors and space, perfectly meeting the market demands for increasingly sophisticated modern electronic circuits. It is mostly used in Bluetooth, tilting modules, and core board substrates, serving as a daughter board to the motherboard, where it is soldered to the motherboard and component leads via these half-metallized holes.

[0003] In the production of tilt sensor half-hole plates (daughter plates), before soldering the mother plate, the daughter plate needs to undergo testing such as programming, function verification, and accuracy calibration. If the pins of the daughter plate are soldered before testing, it will make disassembly difficult or greatly increase the chance of scrapping both the daughter plate and the mother plate after disassembly. Furthermore, the soldering of the pins will affect subsequent accuracy calibration or the customer's user experience. Traditional methods use universal probes to contact the half-hole, but because the half-hole has an inclination angle (e.g., 30°-60°), the probe is prone to misalignment or poor contact, leading to unstable and inaccurate test results. This method is also unsuitable for mass production of tilt sensor half-hole plates. To achieve optimal product testing and solve the problems of difficult mass production testing, soldering, and disassembly of tilt sensor half-hole plates, this utility model proposes a tilt sensor half-hole plate testing fixture based on an elastic steel bent needle. The elastic steel bent needle on which this testing fixture is based has been granted a design patent, with Chinese patent publication number CN307000681S. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a tilt sensor half-hole plate testing fixture based on an elastic steel bent needle, in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a test fixture for a tilt sensor half-hole plate based on an elastic steel bent needle, comprising a PCB board and several elastic snap-fit ​​components, wherein several elastic snap-fit ​​components are fixed on the PCB board, and at least two elastic snap-fit ​​components respectively abut against the two side half-holes of the half-hole plate to be tested, for snapping and fixing the half-hole plate to be tested; the elastic snap-fit ​​component sequentially includes a connecting part, a deformable part, and a snap-fit ​​part, wherein the connecting part is used to connect with the PCB board, the snap-fit ​​part is used to abut against the two side half-holes of the half-hole plate, and the deformable part is used to undergo elastic deformation when the snap-fit ​​part abuts against the half-hole plate, so as to apply an elastic restoring force to the snap-fit ​​part, so that the snap-fit ​​part abuts against the two side half-holes of the half-hole plate.

[0006] By adopting the above technical solution, when installing and fixing the tilt sensor half-hole plate to be tested, it can be directly snapped between the corresponding elastic clips. The elastic clips realize the installation and fixing of the half-hole plate and the electrical conduction, which facilitates the testing of the tilt sensor half-hole plate. After the test is completed, it is easy to remove it and replace it with the next tilt sensor half-hole plate to be tested.

[0007] The present invention is further configured such that the PCB board includes solder holes and slots, the connecting part extends into the solder holes and is soldered to the solder holes, and the deformable part and the snap-fit ​​part are located in the slots.

[0008] The present invention is further configured such that the elastic snap-fit ​​component is an elastic steel bent needle, and its connecting part, deformable part and snap-fit ​​part are formed by bending the steel needle.

[0009] The present invention is further configured such that the connecting part is an L-shaped structure, specifically including a first vertical section and a horizontal section, the first vertical section is connected to the solder hole on the PCB board, the deformable part is an inverted J-shaped structure, specifically including a second vertical section and an arc section located at the top of the second vertical section, and the snap-fit ​​part is an inclined rod-shaped structure, which is fixedly connected to the arc section of the inverted J-shaped deformable part.

[0010] The present invention is further configured such that the PCB board is provided with a power supply circuit, a program burning circuit, and a signal acquisition and output circuit. The power supply circuit is used to supply power to the PCB board and the tilt sensor half-hole plate; the program burning circuit is used to write the test program, configuration parameters, or functional firmware into the microcontroller or other programmable device on the half-hole plate through the debugging interface; the signal acquisition and output circuit is used to provide the input signals required for the test (such as analog voltage, digital pulse, communication protocol data, etc.) to the half-hole plate under test, and to acquire the output signal of the half-hole plate under test.

[0011] The present invention is further configured such that the test fixture also includes a fixing plate, a first fixing hole is formed on the PCB board, a second fixing hole is formed on the fixing plate, and the PCB board is connected to the fixing plate through the first fixing hole and the second fixing hole.

[0012] The present invention is further configured such that a clearance groove is provided on the fixing plate to avoid the elastic snap-fit ​​component, so that the elastic snap-fit ​​component can be placed in the clearance groove, thereby enabling the entire PCB board to be placed horizontally.

[0013] Compared with the prior art, this utility model provides a tilt sensor half-hole plate testing fixture based on an elastic steel bent needle, which has the following beneficial effects:

[0014] 1. When testing the tilt sensor half-hole plate using the above-mentioned testing fixture, the half-hole plate can be directly snapped between two elastic snap-fit ​​parts to achieve quick installation and electrical connection of the half-hole plate.

[0015] 2. Using the above-mentioned test fixture, when disassembling the half-hole plate, it can be directly pulled outward to remove it from the range of the elastic snap fastener. The disassembly is quick and simple, which solves the problem of difficult welding and disassembly in the existing technology. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a tilt sensor half-hole plate test fixture based on an elastic steel bent needle;

[0017] Figure 2 This is a side view of the PCB board and the flexible snap-fit ​​connector.

[0018] Figure 3 for Figure 2 A partial structural diagram of region A in the middle;

[0019] Figure 4 This is a structural diagram of the fixing board and the PCB board;

[0020] Figure 5 This is a system flowchart of the testing process.

[0021] In the diagram: 1. PCB board; 101. Solder hole; 102. Slot; 103. First fixing hole; 2. Elastic snap-fit ​​component; 201. Connecting part; 2011. First vertical section; 2012. Horizontal section; 202. Deformable part; 2021. Second vertical section; 2022. Arc section; 203. Snap-fit ​​part; 3. Fixing plate; 301. Second fixing hole; 302. Clearance groove. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0026] A test fixture for a tilt sensor half-hole plate based on an elastic steel bent needle includes a PCB board 1, several elastic clips 2, and a fixing plate 3. The fixing plate 3 is used to flatly mount the PCB board 1. The PCB board 1 is used to power the half-hole plate under test, perform program burning, and signal acquisition and output. The elastic clips 2 are used to clip and fix the half-hole plate under test and realize circuit conduction. The PCB board 1 is mounted on the fixing plate 3, and the elastic clips 2 are soldered to the PCB board 1. The half-hole plate under test is fixed to the PCB board 1 by the elastic clips 2, and the half-hole plate and the PCB board 1 are electrically connected by the elastic clips 2.

[0027] The edge of the half-hole plate to be tested has several half-holes, also known as stamp holes, which are metallized and conductive. The elastic snap-fit ​​2 abuts against the half-holes to fix the half-hole plate and also to achieve electrical connection with the half-hole plate. The PCB board 1 and the fixing plate 3 can be respectively provided with a first fixing hole 103 and a second fixing hole 301. The PCB board 1 and the fixing plate 3 are connected through the first fixing hole 103 and the second fixing hole 301. The fixing plate 3 is also provided with a clearance groove 302.

[0028] Specifically, the elastic clip 2 is fixed to the PCB board 1 by soldering, and the elastic clips 2 are set in pairs. When the half-hole board to be tested is installed, it can be directly clamped between the two corresponding elastic clips 2, and the PCB board 1 and the half-hole board to be tested are electrically connected through the elastic clips 2. The elastic clips 2 can be placed in the clearance groove 302 of the fixing plate 3 to realize the flat installation of the PCB board 1 on the fixing plate 3.

[0029] like Figure 2-3As shown, the elastic snap-fit ​​component 2 includes a connecting part 201, a deformable part 202, and a snap-fit ​​part 203. The connecting part 201 is used to connect with the PCB board 1, the snap-fit ​​part 203 is used to abut against the two half holes of the half hole plate, and the deformable part 202 is used to elastically deform when the snap-fit ​​part 203 abuts against the half hole plate to apply an elastic restoring force to the snap-fit ​​part 203, so that the snap-fit ​​part 203 abuts against the two half holes of the half hole plate. The PCB board 1 includes solder holes 101 and slot holes 102. The connecting part 201 extends into the solder holes 101 and is soldered to the solder holes 101. The deformable part 202 and the snap-fit ​​part 203 are located in the slot holes 102.

[0030] Among them, the elastic snap-fit ​​component 2 can be made of elastic steel bent needles.

[0031] Specifically, the connecting part 201, the deformable part 202, and the snap-fit ​​part 203 can be formed by bending and deforming a steel needle to form an L-shaped connecting part 201, an inverted J-shaped deformable part 202, and an inclined snap-fit ​​part 203.

[0032] like Figure 5 As shown, PCB board 1 is equipped with a power supply circuit, a program burning circuit, and a signal acquisition and output circuit. The power supply circuit is used to supply power to PCB board 1 and the tilt sensor half-hole plate. The program burning circuit is used to write the test program, configuration parameters, or functional firmware into the microcontroller or other programmable device on the half-hole plate through the debugging interface. The signal acquisition and output circuit is used to provide the input signals required for the test (such as analog voltage, digital pulse, communication protocol data, etc.) to the half-hole plate under test and to acquire the output signal of the half-hole plate under test.

[0033] The working principle of the tilt sensor half-hole plate testing fixture based on elastic steel bent needle disclosed in this embodiment of the utility model is as follows:

[0034] Place the half-hole plate of the tilt sensor to be tested between at least two corresponding elastic clips 2 and press it down to cause the deformation part 202 to elastically deform, so that the half-hole plate is smoothly pressed between the clips 203 of the two elastic clips 2. The half-hole plate and the PCB board 1 are electrically connected through the elastic clips 2. The power supply circuit supplies power to the PCB board 1 and the half-hole plate, and the test program, configuration parameters or functional firmware are written into the microcontroller or other programmable device on the half-hole plate through the debugging interface via the program burning circuit. The signal acquisition and output circuit provides the input signals required for the test, such as analog voltage, digital pulse, communication protocol data, etc., to the half-hole plate under test, and acquires the output signal of the half-hole plate under test. After the test is completed, pull the half-hole plate outward to detach it from the elastic clips 2.

[0035] In all the solutions mentioned above, although embodiments of the present invention 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test fixture for a tilt sensor half-hole plate based on an elastic steel bent needle, characterized in that, Includes a PCB board (1) and several flexible snap-fit ​​components (2), wherein, Several elastic clips (2) are fixed on the PCB board (1), and at least two elastic clips (2) respectively abut against the two half holes on both sides of the half hole to be tested. The two elastic clips (2) are used to clip and fix the half hole to be tested. The elastic snap-fit ​​component (2) includes a connecting part (201), a deformable part (202), and a snap-fit ​​part (203), wherein, The connecting part (201) is connected to the PCB board (1). The snap-fit ​​part (203) abuts against the two side half-holes of the half-hole plate. The deformable part (202) is used to elastically deform when the snap-fit ​​part (203) abuts against the half-hole plate, so as to apply an elastic restoring force to the snap-fit ​​part (203) and make the snap-fit ​​part (203) abut against the half-holes on both sides of the half-hole plate.

2. The tilt sensor half-hole plate testing fixture based on an elastic steel bent needle according to claim 1, characterized in that, The elastic snap-fit ​​(2) is formed by bending a steel needle.

3. The tilt sensor half-hole plate testing fixture based on an elastic steel bent needle according to claim 1, characterized in that, The PCB board (1) is provided with a power supply circuit, a program burning circuit, and a signal acquisition and output circuit, wherein, The power supply circuit is used to power the PCB board (1) and the tilt sensor half-hole board. The programming circuit is used to write test programs, configuration parameters, or functional firmware into the microcontroller or other programmable devices on the half-hole board through a debugging interface. The signal acquisition and output circuit is used to provide the analog voltage, digital pulse, and communication protocol data signals required for the test to the half-hole plate under test, and to acquire the output signal of the half-hole plate under test.

4. A tilt sensor half-hole plate testing fixture based on an elastic steel bent needle according to claim 1 or 2, characterized in that, The PCB board (1) includes solder holes (101) and slots (102). The connecting part (201) extends into the solder hole (101) and is soldered to the solder hole (101). The deformable part (202) and the snap-fit ​​part (203) are located in the slot (102).

5. The tilt sensor half-hole plate testing fixture based on an elastic steel bent needle according to claim 4, characterized in that, The connecting part (201) has an L-shaped structure, including a first vertical section (2011) and a horizontal section (2012). The first vertical section (2011) is connected to the solder hole (101) on the PCB board (1). The deformable part (202) has an inverted J-shaped structure, including a second vertical section (2021) and an arc segment (2022) located at the top of the second vertical section (2021). The second vertical section (2021) is connected to the horizontal section (2012). The snap-fit ​​part (203) is an inclined rod-shaped structure and is connected to the arc segment (2022) of the inverted J-shaped deformed part (202).

6. The tilt sensor half-hole plate testing fixture based on an elastic steel bent needle according to claim 1, characterized in that, The test fixture also includes a fixing plate (3), a first fixing hole (103) is provided on the PCB board (1), and a second fixing hole (301) is provided on the fixing plate (3), with the second fixing hole (301) corresponding to the first fixing hole (103).

7. The tilt sensor half-hole plate testing fixture based on an elastic steel bent needle according to claim 6, characterized in that, The fixing plate (3) is provided with a clearance groove (302) for avoiding the elastic snap fastener (2).

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