Vehicle-mounted circuit board test fixture

Abstract

The invention relates to the field of vehicle-mounted circuit board testing devices, in particular to a vehicle-mounted circuit board testing jig which comprises a carrier plate and an upper cover plate, and a fixing plate is arranged on the carrier plate; a probe module and a connecting rod assembly are arranged on the upper cover plate, the connecting rod assembly comprises a first plate body and a second plate body, the first plate body and the second plate body are rotationally connected with the fixing plate, the first plate body is rotationally connected with the second plate body, and the second plate body is fixedly connected with the upper cover plate. Through the arrangement of the connecting rod assembly, when the probe module is rotated to be close to the circuit board by rotating the first plate body, the upper cover plate rotates relative to the first plate body when the upper cover plate rotates because the rotation centers of the first plate body and the second plate body do not coincide, so that the probe module is rotated to be parallel to the circuit board; and the circuit board can be conveniently plugged. Therefore, the overall occupied space is reduced through rotary connection, the probe module and the circuit board can be plugged conveniently, and the plugging effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle-mounted circuit board testing devices, in particular to a vehicle-mounted circuit board testing fixture. BACKGROUND

[0002] With the rapid development of the automotive industry, the degree of electronicization, intelligentization and networking of automobiles is continuously improving. A large number of electronic control units (ECU) are integrated in modern automobiles to realize complex functions such as engine management, body control, advanced driver assistance systems (ADAS), infotainment systems, etc. As the core carrier of these ECUs, the performance, reliability and integration of vehicle-mounted circuit boards directly determine the performance of the vehicle electronic system.

[0003] Vehicle-mounted circuit boards need to be tested before leaving the factory, and the test is usually performed by a test fixture in cooperation with a test system. The existing test fixture usually includes a carrier plate for placing the circuit board and an upper cover plate for placing the probe module. In order to reduce the overall space occupied by the test fixture, the existing test fixture usually sets the carrier plate and the upper cover plate in rotational connection. When the circuit board is inserted, the upper cover plate rotates to drive the probe module to rotate to the circuit board on the carrier plate for insertion. However, since the existing circuit board is usually placed horizontally, the probe module is finally in an inclined state relative to the circuit board as the upper cover plate rotates, which is not convenient for insertion and affects the insertion effect. SUMMARY

[0004] The technical solution adopted by the present application to solve its technical problems is to provide a vehicle-mounted circuit board testing fixture, comprising:

[0005] a carrier plate for placing the circuit board, the carrier plate being provided with a fixed plate;

[0006] an upper cover plate provided with a probe module and a link assembly, the probe module being electrically connected to the test module, and the upper cover plate and the carrier plate being rotatably connected through the link assembly;

[0007] The link assembly comprises a first plate body and a second plate body, both of which are rotatably connected to the fixed plate, the first plate body and the second plate body are rotatably connected, the second plate body is fixedly connected to the upper cover plate, the rotation centers of the first plate body and the second plate body do not coincide, and the first plate body drives the second plate body to rotate when the first plate body rotates.

[0008] Further, a swing plate is provided between the second plate body and the fixed plate, both ends of the swing plate being rotatably connected to the second plate body and the fixed plate, respectively.

[0009] Further, a limiting rod is rotatably connected to the fixed plate, and the limiting rod is rotatably connected to the first plate body.

[0010] Further, the first plate body is provided with a limiting block, and the limiting block is used for clamping the carrier plate.

[0011] Further, the limiting block is provided with a hook portion, the carrier plate is provided with a fixing block corresponding to the hook portion, the fixing block is provided with a clamping groove, and the hook portion is clamped in the clamping groove.

[0012] Further, the first plate body is provided with a stop plate one, and when the hook portion is clamped in the clamping groove, the stop plate one is pressed on the carrier plate.

[0013] Further, the second plate body is provided with a stop plate two, and when the upper cover plate drives the probe module to be inserted into the circuit board, the stop plate two is pressed on the carrier plate.

[0014] Further, the carrier plate is provided with a camera, the upper cover plate is provided with a through groove corresponding to the circuit board, the upper cover plate is provided with an inclined mirror surface, the camera corresponds to the mirror surface, a two-dimensional code on the circuit board is reflected by the mirror surface, and the camera shoots the two-dimensional code through the mirror surface.

[0015] Further, the upper cover plate is provided with an upper housing, and the camera and the mirror surface are located in the upper housing.

[0016] Further, the through groove is provided with a plurality of through grooves, and the camera corresponds to the through groove and is provided with a plurality of cameras.

[0017] The beneficial effects of the present application are as follows: through the setting of the connecting rod assembly, when the upper cover plate one is rotated by rotating the first plate body, the probe module on the upper cover plate is rotated to be close to the circuit board on the carrier plate, and at the same time, since the rotation centers of the first plate body and the second plate body do not coincide, when the upper cover plate is rotated with the rotation of the first plate body, the upper cover plate is rotated relative to the first plate body through the second plate body, and then the probe module on the upper cover plate is rotated to be parallel to the circuit board on the carrier plate, so that the insertion of the circuit board is facilitated. Therefore, the space occupied by the vehicle-mounted circuit board test fixture can be reduced by rotating the connection, and the insertion between the probe module and the circuit board is facilitated, and the insertion effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described below in combination with the drawings and examples.

[0019] In the drawings: Figure 1 It is a whole structure diagram of the vehicle-mounted circuit board test fixture provided by the present application;

[0020] Figure 2 It is Figure 1 It is a three-dimensional structure diagram of the vehicle-mounted circuit board test fixture from another perspective;

[0021] Figure 3For Figure 2 Enlarged view at A in the middle;

[0022] Figure 4 For Figure 1 Perspective view of the partial structure shown;

[0023] Figure 5 For Figure 1 Perspective view of the partial structure shown;

[0024] Figure 6 For Figure 1 Perspective view of the partial structure shown;

[0025] Figure 7 For Figure 4 Exploded view of the partial structure shown.

[0026] The figure mark explanation: 100, on-board circuit board test fixture; 10, carrier plate; 11, fixed plate; 111, limit rod; 12, fixed block; 121, clamping groove; 13, camera; 20, upper cover plate; 21, probe module; 22, through slot; 23, reflecting mirror; 24, upper housing; 30, link assembly; 31, first plate body; 311, limit block; 3111, barb part; 312, stop plate one; 32, second plate body; 321, swing plate; 322, stop plate two; 33, link; 331, handle; 200, circuit board. DETAILED DESCRIPTION

[0027] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be described in detail with reference to the drawings. The figure is a simplified schematic diagram, which only schematically illustrates the basic of the present application, therefore it only shows the structure related to the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] Please refer to Figure 1 , Figure 2 and Figure 5 , the present application provides a kind of on-board circuit board test fixture 100, including carrier plate 10 and upper cover plate 20, carrier plate 10 is used to place circuit board 200, carrier plate 10 is equipped with fixed plate 11. Upper cover plate 20 is equipped with probe module 21 and link assembly 30, probe module 21 and test module electric connection, upper cover plate 20 and carrier plate 10 are rotationally connected by link assembly 30. In the embodiment, the type of probe module 21 is not limited.

[0029] Please refer to Figure 6 and Figure 7The connecting rod assembly 30 comprises a first plate body 31 and a second plate body 32, the first plate body 31 and the second plate body 32 are rotationally connected with the fixed plate 11, the first plate body 31 is rotationally connected with the second plate body 32, the second plate body 32 is fixedly connected with the upper cover plate 20, the rotation center of the first plate body 31 does not coincide with the rotation center of the second plate body 32, and the first plate body 31 drives the second plate body 32 to rotate when rotating.

[0030] Specifically, in the embodiment, please refer to Figure 6 and Figure 7 The length of the first plate body 31 is greater than the length of the second plate body 32, and the rotation center of the first plate body 31 relative to the fixed plate 11 is located below the rotation center of the second plate body 32 relative to the fixed plate 11, so that the first plate body 31 drives the upper cover plate 20 to rotate until the probe module 21 and the circuit board 200 are inserted, the position of the first plate body 31 relative to the second plate body 32 is lowered, and then the second plate body 32 rotates downward, the second plate body 32 drives the upper cover plate 20 to rotate, so that the probe module 21 on the upper cover plate 20 rotates to the state of being close to the circuit board 200 after rotating with the first plate body 31, and then rotates to the state of being convenient for being inserted with the circuit board 200.

[0031] Through the setting of the connecting rod assembly 30, the upper cover plate 20 is rotated by rotating the first plate body 31, and the probe module 21 on the upper cover plate 20 is rotated to be close to the circuit board 200 on the carrier plate 10. At the same time, since the rotation centers of the first plate body 31 and the second plate body 32 do not coincide, when the upper cover plate 20 rotates with the first plate body 31, the upper cover plate 20 rotates relative to the first plate body 31 through the second plate body 32, so that the probe module 21 on the upper cover plate 20 rotates to the state of being parallel to the circuit board 200 on the carrier plate 10, which is convenient for inserting the circuit board 200. Therefore, the space occupied by the vehicle-mounted circuit board test fixture 100 can be reduced by rotating connection, and the insertion between the probe module 21 and the circuit board 200 is facilitated, and the insertion effect is improved.

[0032] As a specific embodiment, please refer to Figure 4 The connecting rod assembly 30 is provided with two groups, and the two groups of connecting rod assemblies 30 are arranged in pairs about the central axis in the length direction of the carrier plate 10. The first plate body 31 of the two groups of connecting rod assemblies 30 is provided with a connecting rod 33, and the two first plate bodies 31 are connected through the connecting rod 33. In order to be convenient for holding, a handle 331 is arranged on the connecting rod 33.

[0033] The second plate body 32 and the fixed plate 11 are provided with a swing plate 321, and the two ends of the swing plate 321 are rotationally connected with the second plate body 32 and the fixed plate 11 respectively.

[0034] Since in the embodiment, the second plate body 32 and the upper cover plate 20 are both located in the space between the front end of the first plate body 31 and the rotation center of the first plate body 31 relative to the fixed plate 11, the distance between the front end of the first plate body 31 and the rotation center of the first plate body 31 relative to the fixed plate 11 is long, and the first plate body 31 is prone to shaking when rotating. Therefore, please refer to Figure 2 and Figure 6 The fixed plate 11 is rotationally connected with a limiting rod 111, and the limiting rod 111 is rotationally connected with the first plate body 31. The first plate body 31 is supported by the limiting rod 111, thereby improving the stability of the rotation of the first plate body 31.

[0035] Please refer to Figure 2 and Figure 3 The first plate body 31 is provided with a limiting block 311 for clamping the carrier plate 10. Specifically, the front end of the limiting block 311 is provided with a barb portion 3111, and the carrier plate 10 is provided with a fixed block 12 corresponding to the barb portion 3111. The fixed block 12 is provided with a clamping groove 121, and the barb portion 3111 is clamped in the clamping groove 121. Through the cooperation of the barb portion 3111 and the clamping groove 121, the first plate body 31 and the carrier plate 10 are relatively fixed when the probe module 21 on the upper cover plate 20 is inserted with the circuit board 200 on the carrier plate 10, thereby reducing the instability of the insertion caused by the shaking of the first plate body 31 to the carrier plate 10.

[0036] Further, please refer to Figure 6 The first plate body 31 is provided with a first stop plate 312, and when the barb portion 3111 is clamped in the clamping groove 121, the first stop plate 312 is pressed on the carrier plate 10. The second plate body 32 is provided with a second stop plate 322, and when the probe module 21 on the upper cover plate 20 is inserted with the circuit board 200, the second stop plate 322 is pressed on the carrier plate 10.

[0037] The rotation range of the first plate body 31 is limited by the cooperation of the first stop plate 312, the second stop plate 322 and the barb portion 3111, so that the first plate body 31 is not easy to rotate excessively to drive the probe module 21 on the upper cover plate 20 to rotate excessively, thereby reducing the excessive insertion caused by the excessive rotation of the first plate body 31.

[0038] Please refer to Figure 4 and Figure 5The camera 13 is arranged on the carrier plate 10, and the upper cover plate 20 is provided with a through slot 22 corresponding to the circuit board 200. Since the camera 13 cannot be arranged in an inclined manner, and in order to reduce the space occupied by the vehicle-mounted circuit board test fixture 100 as a whole, a mirror surface 23 is arranged on the upper cover plate 20 in an inclined manner. The camera 13 corresponds to the mirror surface 23, the two-dimensional code on the circuit board 200 is reflected by the mirror surface 23, and the camera 13 captures the two-dimensional code through the mirror surface 23. While the two-dimensional code on the circuit board 200 can be captured, the space occupied by the vehicle-mounted circuit board test fixture 100 as a whole is reduced, and the space arrangement is optimized.

[0039] Specifically, in the embodiment, the through slot 22 is provided with a plurality of cameras 13 corresponding to the through slot 22, so as to simultaneously test a plurality of circuit boards 200 and improve the test efficiency.

[0040] Please refer to Figure 2 The upper cover plate 20 is provided with an upper cover 24, and the camera 13 and the mirror surface 23 are located in the upper cover 24.

Claims

1. An in-vehicle circuit board test fixture, characterized by, include: A carrier board for placing a circuit board, and a fixing plate is provided on the carrier board; The upper cover plate is provided with a probe module and a connecting rod assembly. The probe module and the test module are electrically connected. The upper cover plate and the carrier plate are rotatably connected through the connecting rod assembly. The linkage assembly includes a first plate and a second plate. Both the first plate and the second plate are rotatably connected to a fixed plate. The first plate and the second plate are rotatably connected. The second plate is fixedly connected to the upper cover plate. The rotation centers of the first plate and the second plate do not coincide. When the first plate rotates, it drives the second plate to rotate.

2. The vehicle on-board circuit board test fixture of claim 1, wherein: A swing plate is provided between the second plate and the fixed plate, and the two ends of the swing plate are rotatably connected to the second plate and the fixed plate, respectively.

3. The vehicle circuit board test fixture of claim 1, wherein: A limiting rod is rotatably connected to the fixed plate, and the limiting rod is rotatably connected to the first plate.

4. The vehicle circuit board testing fixture of claim 1, wherein: The first plate is provided with a limiting block, which is used to hold the carrier plate.

5. The vehicle circuit board test fixture of claim 4, wherein: The limiting block is provided with a barb, and the carrier plate is provided with a fixing block corresponding to the barb. The fixing block is provided with a snap-fit ​​groove, and the barb is snapped into the snap-fit ​​groove.

6. The vehicle circuit board testing fixture of claim 5, wherein: The first plate is provided with a stop plate. When the barb is engaged in the engagement groove, the stop plate presses against the carrier plate.

7. The vehicle circuit board testing fixture of claim 5, wherein: The second plate is provided with a second stop plate. When the upper cover plate drives the probe module to insert the circuit board, the second stop plate presses against the carrier plate.

8. The vehicle mounted circuit board testing fixture of claim 1, wherein: The carrier plate is equipped with a camera, the upper cover plate is provided with a through groove corresponding to the circuit board, and the upper cover plate is provided with an inclined reflective mirror. The camera and the reflective mirror are opposite each other. The QR code on the circuit board is reflected by the reflective mirror, and the camera captures the QR code through the reflective mirror.

9. The vehicle circuit board testing fixture of claim 8, wherein: The upper cover plate is provided with an upper housing, and the camera and the reflector are both located inside the upper housing.

10. The vehicle circuit board testing fixture of claim 1, wherein: The through slots are provided in multiple ways, and the camera is provided in multiple ways corresponding to the through slots.

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