ECU (Electronic Control Unit) burning test fixture

Abstract

The utility model relates to the technical field of burning test clamps, in particular to an ECU burning test clamp which comprises a fixing part used for fixing a PCB, and the fixing part is provided with a probe and a pressing part used for pressing the probe on a PCB test point. The fixing piece comprises a bottom plate, and a positioning piece for placing the PCB is arranged on the bottom plate; the pressing piece comprises a probe plate, the probe is arranged on the probe plate, and a locking piece used for fixing is arranged between the probe plate and the bottom plate. According to the invention, the PCB without the burning interface can also carry out burning operation.

Description

Technical Field

[0001] This application relates to the technical field of programming test fixtures, and in particular to an ECU programming test fixture. Background Technology

[0002] Commercially available programming fixtures have fixed pin counts, row counts, and spacing; they are universal models. Customization is expensive and time-consuming, and cannot meet the testing and programming requirements of customized ECUs. Furthermore, test wiring harnesses cannot be used because the programming interface is integrated on the PCB board and lacks external interfaces. Utility Model Content

[0003] To address the aforementioned technical issues, this application provides an ECU programming test fixture, which has the advantage of allowing programming operations to be performed even on PCB boards without programming interfaces.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] An ECU programming test fixture includes a fixing member for fixing a PCB board, wherein the fixing member is provided with a probe and a clamping member for pressing the probe onto a test point on the PCB board;

[0006] The fixing component includes a base plate, and a positioning component for placing the PCB board is provided on the base plate;

[0007] The clamping component includes a needle plate, the probe is disposed on the needle plate, and a locking component for fixing is provided between the needle plate and the base plate.

[0008] To achieve the above technical solution, the PCB board is placed on the fixing component, and the probe plate is moved down so that the probes on the probe plate come into contact with the test points on the PCB board and conduct electricity. Then, the subsequent test and programming are completed after the clamping component is used to press and fix the board.

[0009] As a preferred embodiment of this application, the positioning element includes a plurality of positioning pins disposed on the base plate.

[0010] The above technical solution is achieved by placing the PCB board on the corresponding positioning pins, thereby ensuring the accuracy of the test point positions on the PCB board.

[0011] As a preferred embodiment of this application, a pair of guide posts are provided on the base plate, and a pair of guide sleeves are provided on the needle plate, with the guide sleeves slidably sleeved on the guide posts.

[0012] To achieve the above technical solution, the guide sleeve is slidably fitted onto the guide post, so that the up and down movement of the probe plate is guided by the guide post and the guide sleeve, ensuring the accuracy of the connection between the probe and the test point on the PCB board.

[0013] As a preferred embodiment of this application, the locking member includes a hook rotatably mounted on the needle plate, a bent portion being provided at one end of the hook near the base plate, a hook groove being provided on the base plate for the bent portion to be hooked, and an elastic member being provided between the base plate and the needle plate to keep them apart.

[0014] To achieve the above technical solution, by rotating the hook, the bent part is hooked onto the hook groove. Under the action of the elastic element, the base plate and the needle plate are moved away from each other, thereby ensuring the stability of the hook under the action of tension. This prevents the hook from falling out of the hook groove due to vibration or other reasons, which would cause the probe to move away from the PCB board, resulting in a broken contact and affecting the programming.

[0015] As a preferred embodiment of this application, a top plate is provided on the side of the needle plate away from the bottom plate, a support column for fixing the top plate and the needle plate together is provided, and an unlocking spring is provided between the needle plate and the hook, the unlocking spring causing the bent part to press against the bottom plate.

[0016] The above technical solution can be achieved by fixing the top plate to a driving element such as a pneumatic cylinder or an electric cylinder. The pneumatic or electric cylinder drives the top plate to move, which in turn drives the needle plate to move, thereby achieving the effect of automatic pressure testing. When the top plate drives the needle plate and hook to move down, the hook opens and compresses the unlocking spring under the guidance of the tapered guide surface at its own end until the bent part hooks in the hook groove. The unlocking spring is released to ensure the tightness of the hook and complete the effect of automatic locking. When unlocking is required, simply press the hook to compress the unlocking spring, so that the hook rotates to complete the unlocking and disengagement. Under the action of the elastic element, the needle plate moves up to achieve the effect of unlocking and picking up the material.

[0017] As a preferred embodiment of this application, the top of the guide post is provided with an anti-collision ring.

[0018] The above technical solution prevents the top plate and needle plate from flying off due to unexpected situations. At the same time, the guide rail itself has a reserved distance to reduce the chance of derailment.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] This invention enables programming operations to be performed on PCB boards without a programming interface;

[0021] It is easy to operate and has low maintenance costs. Users only need to place the PCB board on the positioning pin to achieve positioning. During maintenance, only the probe needs to be replaced, without having to remake the entire fixture. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is an exploded view of an embodiment of this application.

[0025] Reference numerals: 1. Base plate; 2. Needle plate; 3. Top plate; 4. Probe; 5. Positioning pin; 6. Guide post; 7. Guide sleeve; 8. Support post; 9. Unlocking spring; 10. Hook; 101. Bending part; 102. Hook groove; 11. Anti-collision ring. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0027] This application discloses an ECU programming test fixture. (Refer to...) Figure 1 The ECU programming test fixture includes a fixing component for fixing the PCB board. The fixing component is equipped with a probe 4 and a clamping component for pressing the probe 4 onto the test point on the PCB board. That is, after the PCB board is placed on the fixing component, the clamping component makes the probe 4 abut against the test point on the PCB board and conducts a connection. After being pressed and fixed by the clamping component, the subsequent test programming is completed.

[0028] Specifically, the fixing components include a base plate 1, on which positioning components are provided for placing the PCB board. The positioning components include several positioning pins 5 set on the base plate 1, that is, by placing the PCB board on the corresponding positioning pins 5, the accuracy of the test point position on the PCB board is ensured.

[0029] A pair of guide posts 6 are fixed on the side base plate 1 of the positioning pin 5. A clamping component is mounted on the guide posts 6 and moves up and down along them. The clamping component includes a pin plate 2, on which a probe 4 is mounted. A locking component is provided between the pin plate 2 and the base plate 1 for fixation. This allows the probe 4 to move downwards with the pin plate 2, making contact and conduction between the probe 4 on the pin plate 2 and the test point on the PCB board placed on the positioning pin 5. The locking component then secures the probe 4 to prevent disconnection. To ensure the smoothness and accuracy of the probe 4's downward movement, a pair of guide sleeves 7 are provided on the pin plate 2. These guide sleeves 7 slide on the guide posts 6, ensuring the accurate connection between the probe 4 and the test point on the PCB board.

[0030] Combination Figure 1 and Figure 2 The locking mechanism includes a hook 10 rotatably mounted on the needle plate 2. The hook 10 has a bent portion 101 at one end near the base plate 1. The base plate 1 has a hook groove 102 for the bent portion 101 to hook onto. An elastic element is provided between the base plate 1 and the needle plate 2 to keep them apart. By rotating the hook 10, the bent portion 101 hooks onto the hook groove 102. Under the action of the elastic element, the base plate 1 and the needle plate 2 move apart, ensuring the stability of the hook 10 under tension. This prevents vibration or other factors from causing the hook 10 to detach from the hook groove 102, which would then cause the probe 4 to move off the PCB board, resulting in a broken contact and affecting the programming process. In this application, the elastic element is a spring (not shown in the figure) sleeved on the guide post 6.

[0031] A top plate 3 is provided on the side of the needle plate 2 away from the base plate 1. A support column 8 is provided between the top plate 3 and the needle plate 2 for mutual fixed connection. That is, the top plate 3 can be fixed on a driving element such as a cylinder or electric cylinder, and the cylinder or electric cylinder can drive the top plate 3 to move, thereby driving the needle plate 2 to move, so as to achieve the effect of automatic pressure testing. An unlocking spring 9 is provided between the needle plate 2 and the hook 10. The unlocking spring 9 causes the bent part 101 to press against the base plate 1. Thus, without external force, the unlocking spring 9 always causes the bent part 101 to press against the base plate 1. When the top plate 3 moves the needle plate 2 and the hook 10 downward, the hook 10 opens under the guidance of its own tapered guide surface and compresses the unlocking spring 9 until the bent part 101 is hooked in the hook groove 102. The unlocking spring 9 is then released to ensure the tightness of the hook and achieve the effect of automatic locking. When unlocking is required, simply press the hook 10 to compress the unlocking spring 9, so that the hook 10 rotates to unlock and disengage. Under the action of the elastic element, the needle plate 2 moves upward to achieve the effect of unlocking and picking up materials.

[0032] The top of the guide post 6 is equipped with an anti-collision ring 11 to prevent the top plate 3 and needle plate 2 from flying off due to unexpected situations. At the same time, the guide post 6 itself has a reserved distance to reduce the chance of derailment.

[0033] The implementation principle of an ECU programming test fixture according to an embodiment of this application is as follows: During use, the ECU PCB board is placed on four positioning pins 5. The top plate 3 is connected to the pin plate 2 via support pillars 8. By applying downward pressure to the top plate 3, the probe 4 contacts the PCB test point. At this time, the hook 10 moves downward with the top plate 3. A positioning platform specifically designed for the hook 10 is located on the bottom plate 1. Once the probe 4 and the test point confirm continuity, the downward pressure is released, and the hook 10 snaps onto the positioning platform, locking the fixture in place. PCB programming can then be performed.

[0034] After the programming is complete, press the upper end of the hook 10. The elastic element releases its tension and automatically resets, causing the needle plate 2 and top plate 3 to move upwards. Due to inertia, the top plate 3 will continue to move upwards. To prevent the entire moving part from derailing, the top of the guide post 6 is equipped with an anti-collision ring 11 to prevent the top plate 3 and needle plate 2 from flying off due to unexpected situations. At the same time, the guide post 6 itself has a reserved distance to reduce the chance of derailment.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An ECU programming test fixture, characterized in that: It includes a fastener for fixing a PCB board, the fastener being provided with a probe (4) and a clamping member for pressing the probe (4) against a test point on the PCB board; The fastener includes a base plate (1), on which a positioning element for placing the PCB board is provided; The clamping component includes a needle plate (2), the probe (4) is disposed on the needle plate (2), and a locking component for fixing is provided between the needle plate (2) and the base plate (1).

2. The ECU programming test fixture according to claim 1, characterized in that: The positioning component includes several positioning pins (5) disposed on the base plate (1).

3. The ECU programming test fixture according to claim 1, characterized in that: A pair of guide posts (6) are provided on the base plate (1), and a pair of guide sleeves (7) are provided on the needle plate (2). The guide sleeves (7) are slidably sleeved on the guide posts (6).

4. The ECU programming test fixture according to claim 1, characterized in that: The locking component includes a hook (10) rotatably mounted on the needle plate (2), the hook (10) having a bent portion (101) at one end near the base plate (1), the base plate (1) having a hook groove (102) for the bent portion (101) to hook, and an elastic element for keeping the base plate (1) and the needle plate (2) apart.

5. The ECU programming test fixture according to claim 1, characterized in that: A top plate (3) is provided on the side of the needle plate (2) away from the bottom plate (1). A support column (8) for mutual fixed connection is provided between the top plate (3) and the needle plate (2). An unlocking spring (9) is provided between the needle plate (2) and the hook (10). The unlocking spring (9) causes the bent part (101) to press against the bottom plate (1).

6. The ECU programming test fixture according to claim 1, characterized in that: The top of the guide post (6) is provided with an anti-collision ring (11).

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