Vehicle-mounted host test fixture

Abstract

The utility model relates to a vehicle-mounted host test fixture, including base, testboard, positioning gland, bayonet socket, modular connection socket, the testboard is arranged in the middle of the upper end face of the base, air spring and sealing press fit subassembly are arranged on both sides of the testboard, the positioning gland includes outer gland and inner cover plate, the inner cover plate is arranged inside the outer gland in the shape of box-type sealing cover, and the bayonet socket is arranged on the outer gland in the shape of box-type sealing cover. A plurality of probes are arranged on the lower end face of the test board and the power connection ends of components on a circuit board of the host to be tested, a bayonet socket matched with various power connection sockets arranged on the host to be tested is arranged on the rear side of the test board, and butt joint plugs are arranged on the bayonet socket and directly face the power connection sockets. The host of the to-be-tested model is matched to carry out a closed type simulation vehicle machine test, and power connection simulation use test is carried out on batch of delivered hosts one by one so as to ensure that the performance of each host reaches the standard, the reliability, the safety and the stability of the product are ensured, and the delivery qualification rate of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic detection equipment, in particular to a test fixture for a vehicle-mounted host computer. Background Art

[0002] With the booming new energy vehicle market, the vehicle-mounted "three electrics" have become the core technologies that major automobile manufacturers are competing to develop. Among them, the electronic control, as the core of the vehicle control module, includes the control of modules such as the vehicle computer, battery, electronic control, temperature control, charging and discharging, etc. Therefore, great importance is attached to the development of the host computer carrying this control board, and the product performance test of this host computer is also extremely important. In order to conduct simulated actual use tests on the electronic control circuits, chips, interfaces, etc. of the host computers in mass production, it is necessary for us to design a convenient automatic test equipment to facilitate the positioning, plugging, electrical conduction and simulated testing of the host computer, so as to ensure the performance of each host computer, as well as the reliability, safety and stability of the product. Summary of the Utility Model

[0003] The purpose of the utility model is as follows: In view of the fact that the host computer of new energy vehicles includes the control of modules such as the vehicle computer, battery, electronic control, temperature control, charging and discharging, etc., and the product performance test of this host computer is also extremely important, and there is a technical requirement for conducting power connection simulated use tests one by one on the mass-produced host computers leaving the factory, we design a convenient automatic torque test equipment to ensure that the performance of each host computer meets the standard, as well as the reliability, safety and stability of the product, and improve the qualified rate of the product leaving the factory.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A test fixture for a vehicle-mounted host computer, comprising a base, a test bench, a positioning pressing cover, a plugging socket, a modular connection socket, as well as a gas spring and a sealing and pressing assembly.

[0006] A test bench is arranged in the middle of the upper end surface of the base, and a gas spring and a sealing and pressing assembly are arranged on both sides to assist the positioning pressing cover to be tightly closed on the test bench.

[0007] The positioning pressing cover includes an outer pressing cover and an inner cover plate. The outer pressing cover is movably hinged to the hinge seat arranged at the rear side of the base, and clamping grooves for the sealing and pressing assembly are arranged on both sides. The inner cover plate is arranged inside the outer pressing cover in the shape of a box-type sealing cover, and a number of probes are arranged on the lower end surface and the power connection ends of the components on the circuit board of the host computer to be tested, which are used to detect voltage, current and power-on and power-off signals after being electrically conducted in cooperation with the test instrument.

[0008] A plug-in socket is provided at the rear side of the test bench, which is matched with various power sockets provided on the host to be tested. The plug-in socket is provided with a docking plug facing each power socket. The docking plug is connected to a modular connection socket through a wire. The modular connection socket is connected to a standard socket provided at the rear side of the base through a wire. The standard socket is inserted and matched with a standard plug of the instrument.

[0009] Further, the sealing and pressing assembly includes lifting guide rods, guide sleeves and pressing cylinders symmetrically arranged on both sides of the test bench. The pressing cylinder drives the front and rear lifting guide rods to perform lifting and sliding actions through a connecting plate, and drives a buckle provided above the lifting guide rod to be clamped and engaged with a clamping groove provided on the inner side of the outer pressure cover, and applies a downward force to press, so as to ensure that the host to be tested is sealed in the test bench to simulate the sealed environment when the actual host is installed in the in-vehicle machine center console.

[0010] Further, the probe is electrically connected to the modular connection socket through a wire and is inserted and matched with a standard plug of the test instrument.

[0011] Further, the test bench is provided with positioning pins and locking pins. The positioning pins are used for positioning in cooperation with positioning holes provided on the circuit board of the host, and the locking pins are screwed and locked with locking grooves provided on the circuit board of the host through screws.

[0012] Further, positioning holes are provided at the four corners of the test bench and are sleeved and matched with positioning columns provided at corresponding positions on the base, so that the test bench can be disassembled and separated up and down, and the test bench and plug-in socket that meet the requirements can be adapted according to the specifications and models of the host to be tested.

[0013] Compared with the prior art, the present utility model adopts the above technical solutions and has the following technical effects:

[0014] The in-vehicle host test fixture performs a closed simulation vehicle machine test on the host to be tested by matching the modular designed test bench, and conducts power-on simulation use tests on each batch of hosts produced one by one to ensure that the performance of each host meets the standard, as well as the reliability, safety and stability of the product, and improve the pass rate of the product at the time of leaving the factory. Description of the Drawings

[0015] Figure 1 It is the right side top view of the in-vehicle host test fixture of this embodiment;

[0016] Figure 2 It is the side top view of the partial disassembly of the in-vehicle host test fixture of this embodiment;

[0017] Figure 3 It is the rear side bottom view of the in-vehicle host test fixture of this embodiment;

[0018] Figure 4Schematic structural diagram of the test bench described in this embodiment;

[0019] Figure 5 is Figure 4 partial enlarged view at position A in;

[0020] Figure 6 Schematic structural diagram of the host computer described in this embodiment;

[0021] Wherein: 1 - positioning gland, 2 - gas spring, 3 - host computer, 4 - test bench, 5 - probe, 6 - pressing cylinder, 7 - connecting plate, 8 - socket, 9 - first standard socket, 10 - modular connection socket, 11 - second standard socket, 12 - third standard socket, 13 - first socket, 14 - positioning pin, 15 - second socket, 16 - third socket, 17 - fourth socket, 18 - circuit board, 19 - radiator, 20 - first plug, 21 - second plug, 22 - fourth plug, 23 - third plug. Specific implementation mode

[0022] The technical solution of the present invention will be clearly and completely described below in an embodiment in conjunction with the accompanying drawings.

[0023] Please refer to Figures 1 to 6 , this embodiment provides a vehicle-mounted host computer test fixture, including a base, a test bench 4, a positioning gland 1, a socket 8, a modular connection socket 10, as well as a gas spring 2 and a sealing and pressing assembly.

[0024] Refer to Figure 1 and Figure 2 , in order to assist the positioning gland 1 to be tightly closed on the test bench 4, the middle of the upper end surface of the base is provided with a test bench 4, and the two sides are provided with a gas spring 2 and a sealing and pressing assembly. The top push rod of the gas spring 2 is connected to the positioning gland 1, and the cylinder body of the gas spring is connected to the base.

[0025] Refer to Figure 2 and Figure 4 , the positioning gland 1 includes an outer gland and an inner cover plate. The outer gland is movably connected to the hinge seat provided at the rear side of the base, and the two sides are provided with slots for the sealing and pressing assembly. The inner cover plate is arranged inside the box-shaped sealing cover-shaped outer gland, and a plurality of probes 5 are arranged on the lower end surface and the power connection ends of the components on the circuit board 18 of the host computer 3 to be tested.

[0026] Refer to Figures 3 to 5, a plug socket 8 that matches various power sockets provided by the host 3 to be tested is arranged at the rear side of the test bench 4, including a first plug socket 13, a second plug socket 15, a third plug socket 16, and a fourth plug socket 17. The plug socket 8 is provided with docking plugs facing 4 power sockets. The docking plugs include a first plug 20, a second plug 21, a third plug 23, and a fourth plug 22. The docking plugs are connected to the modular connection socket 10 through wires. The modular connection socket 10 is connected to the standard socket arranged at the rear side of the base through wires. The standard socket is in plug-in cooperation with the standard plug of the instrument.

[0027] Refer to Figure 2 , in order to simulate the airtight environment where the actual host 3 is installed in the in-vehicle center console, including the positioning host and the room temperature in the simulated assembly environment, the sealing and pressing assembly includes lifting guide rods, guide sleeves, and pressing cylinders 6 symmetrically arranged on both sides of the test bench 4. The pressing cylinder 6 drives the front and rear lifting guide rods to perform lifting and sliding actions through the connecting plate 7, and drives the buckle arranged above the lifting guide rod to be clamped with the slot arranged on the inner side of the outer pressure cover in a matching manner, and applies a downward force to press, so as to ensure that the host 3 to be tested is airtight in the positioning pressure cover 1, and can also ensure the heating and heat dissipation conditions of the host during long-term operation in the airtight environment, so as to fully and truly simulate the in-vehicle application environment.

[0028] Refer to Figure 4 , in order to locally detect the power-on and power-off performance of the pin endpoints of the on-board components of the circuit board, and detect the voltage and current signals after the test instrument is electrically conducted, the probe 5 is electrically connected to the modular connection socket 10 through wires, and is in plug-in cooperation with the standard plug of the test instrument.

[0029] Refer to Figure 5 , the test bench 4 is provided with a positioning pin 14 and a locking pin. The positioning pin 14 performs positioning in cooperation with the positioning holes arranged on the circuit board 18 of the host 3. The locking pin is screwed and locked with the locking groove arranged on the circuit board 18 of the host 3 through screws.

[0030] A further implementation is that, in order to adapt the test bench and the plug socket that meet the specifications of the host to be tested, positioning holes are arranged at the four corners of the test bench, and are sleeved and matched with the positioning posts arranged at the corresponding positions of the base, so that the test bench can be disassembled and separated up and down, which is convenient for replacement.

[0031] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes, modifications, substitutions, and variations can be made without departing from the purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted host test fixture, comprising a base, a test bench (4), a positioning gland (1), a plug socket (8), a modular connection socket (10), a gas spring (2) and a sealing pressing assembly, characterized in that: A test bench (4) is arranged in the middle of the upper end surface of the base, and gas springs (2) and sealing pressing components are arranged on both sides to assist the positioning gland (1) to be tightly closed on the test bench (4). The positioning cover (1) comprises an outer cover and an inner cover plate. The outer cover is movably connected to a hinged seat arranged at the rear side of the base. Both sides are provided with slots for sealing and pressing components. The inner cover plate is arranged inside the outer cover in a box-shaped sealing cover. A plurality of probes (5) are arranged on the lower end surface and on the electrical connection ends of components on a circuit board (18) of a host computer (3) to be tested. After the electrical conduction is carried out in cooperation with a test instrument, the voltage, current and power-on and power-off signals are detected. The test bench (4) is provided with a socket (8) on the rear side thereof for matching with various power sockets provided on the host to be tested (3); the socket (8) is provided with a docking plug facing each power socket; the docking plug is connected to a modular connection socket (10) via a wire; the modular connection socket (10) is connected to a standard socket provided on the rear side of the base via a wire; the standard socket is plugged and matched with a standard plug matched with the instrument.

2. The vehicle-mounted host test fixture according to claim 1, characterized in that: The sealing pressing assembly comprises lifting guide rods, guide sleeves and pressing cylinders (6) symmetrically arranged on both sides of the test bench (4); the pressing cylinders (6) drive the front and rear lifting guide rods to perform lifting and sliding movements through the connecting plates (7), and drive the buckles arranged above the lifting guide rods to engage with the slots arranged on the inner side of the outer pressure cover, and apply downward force to press them together.

3. The vehicle-mounted host test fixture according to claim 1, characterized in that: The probe (5) is electrically connected to the modular connection socket (10) via a wire and is plugged into and matched with a standard plug of a test instrument.

4. The vehicle-mounted host test fixture according to claim 1, characterized in that: The test bench (4) is provided with a positioning pin (14) and a locking pin. The positioning pin (14) cooperates with a positioning hole provided on a circuit board (18) of the host (3) to implement positioning. The locking pin cooperates with a locking groove provided on the circuit board (18) of the host (3) to be screwed and locked.

5. The vehicle-mounted host test fixture according to claim 1, characterized in that: The test bench (4) is detachably arranged from the base, and a suitable test bench (4) is adapted according to the specifications and models of the host computer (3) to be tested.

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