Testing device and testing system for automobile central control circuit board

Abstract

The invention belongs to the field of circuit board testing, and particularly relates to an automobile central control circuit board testing device and a testing system.The automobile central control circuit board testing device comprises a magnetic attraction base and a plurality of probe assemblies, each probe assembly comprises an adjusting base and a telescopic probe, the adjusting bases are connected to the magnetic attraction base in a magnetic attraction mode, and the telescopic probes are connected to the magnetic attraction base in a magnetic attraction mode. One end of the telescopic probe is arranged on the adjusting seat through a universal connecting structure, and locking / unlocking controllers for controlling the universal connecting structure and the telescopic probe to move or be locked are arranged on the universal connecting structure and the telescopic probe. The automobile central control circuit board testing device solves the problems that an existing automobile central control circuit board testing device is poor in universality and needs one circuit board and one jig, and for manufacturers producing various circuit boards or designing the circuit boards, the cost for designing the circuit board testing jig can be saved.

Description

Technical Field

[0001] The invention belongs to the field of circuit board testing, and in particular relates to a vehicle central control circuit board testing device and a testing system. Background Art

[0002] In the modern automobile manufacturing industry, the central control circuit board is an indispensable core component as the brain of the vehicle. It carries the intelligent operation of various functions and systems inside the vehicle. Its design and manufacturing requirements are extremely high. With the continuous improvement of consumers' demand for intelligent and comfortable cars, the central control circuit board needs to have higher integration, smaller size and more reliable performance.

[0003] The application of HDI (high-density interconnect) technology is gradually taking a place in the central control circuit boards of automobiles, leading the innovative development of automobile circuit boards. HDI technology achieves high-density interconnection of circuit boards by adopting more sophisticated circuit layout and more advanced manufacturing processes. This not only greatly improves the integration and performance of circuit boards, but also makes circuit boards thinner and more compact, meeting the needs of limited interior space in automobiles. At the same time, HDI technology can also effectively improve the reliability of circuit boards and reduce the failure rate, thereby improving the safety and stability of the entire vehicle. With the continuous development of HDI technology, more and more automobile manufacturers have begun to apply HDI technology to the manufacture of central control circuit boards. Some well-known HDI manufacturers have also increased their R&D investment and launched more advanced and efficient HDI manufacturing processes and equipment, providing strong support for the manufacture of central control circuit boards for automobiles.

[0004] With the fierce competition in the current automobile market, the requirements for the update and iteration speed of circuit boards are becoming more and more significant, but the production and design efficiency of the corresponding circuit board test devices is still low, that is, the existing circuit board test benches are not universal for circuit boards of different models and sizes, and the probe components and fixtures need to be replaced. For manufacturers who specialize in the production and design of circuit boards, the quality inspection after production often requires a lot of manpower and energy to design different test probe components and fixed fixture test benches. This greatly limits the test speed of circuit boards and seriously affects the update and iteration speed of circuit boards.

[0005] In response to this, the Swedish company Sensepeek AB invented a magnetic hands-free measurement tool, which is very convenient for adjusting the probe assembly. However, this tool is only used for manual testing of a single circuit board and cannot meet the needs of large-scale industrial testing. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a vehicle central control circuit board testing device and a testing system which have high adaptability and are convenient for adjusting the position of the probe end.

[0007] The present invention provides a vehicle central control circuit board testing device, comprising a magnetic base and a plurality of probe assemblies, wherein the probe assembly comprises an adjustment seat and a retractable probe, the adjustment seat is magnetically connected to the magnetic base, one end of the retractable probe is arranged on the adjustment seat through a universal connection structure, and the universal connection structure and the retractable probe are both provided with a locking / unlocking controller for controlling the activity or locking thereof.

[0008] Furthermore, the universal connection structure includes a spherical groove arranged at one end of the adjustment seat away from the magnetic base, and the spherical groove is provided with an opening;

[0009] The universal connection structure also includes a sphere arranged at one end of the retractable probe, and the sphere is embedded in the spherical groove.

[0010] Furthermore, at least the outer surface of the sphere is provided with magnetic material;

[0011] The locking / unlocking controller of the universal connection structure includes an electromagnet I arranged on the inner wall of the spherical groove. The electromagnet I generates suction force to absorb magnetic material to limit the rotation of the ball in the spherical groove.

[0012] Furthermore, the electromagnet I is a power-off type electromagnet.

[0013] Furthermore, the retractable probe comprises a sleeve and a probe rod;

[0014] One end of the sleeve is connected to the universal connection structure, and the other end is provided with a slot. One end of the probe rod is slidably arranged in the sleeve, and the other end extends out of the sleeve through the slot.

[0015] Furthermore, a slider is provided at the end of the probe rod, the slider is slidably arranged in the sleeve, and the slider is made of magnetic material;

[0016] The locking / unlocking controller of the retractable probe includes a strip conductor arranged on the inner wall of the sleeve and an electromagnet II connected to the strip conductor. The electromagnet II generates suction force to magnetically attract the slider through the strip conductor to limit the movement of the slider in the sleeve.

[0017] Furthermore, the electromagnet II is a power-off type electromagnet.

[0018] The present invention also provides a vehicle central control circuit board testing system, comprising a circuit board carrying device to be tested, a probe assembly adjustment structure, a docking drive mechanism and the above-mentioned vehicle central control circuit board testing device;

[0019] The circuit board to be tested carrying device is used to carry the circuit board to be tested, and the circuit board to be tested carrying device is arranged opposite to the automobile central control circuit board testing device;

[0020] The probe assembly adjustment structure is used to adjust the probe end position of the retractable probe in the automobile central control circuit board testing device;

[0021] The docking drive mechanism is used to drive the circuit board carrying device to be tested to move toward the automobile central control circuit board testing device, or to drive the automobile central control circuit board testing device to move toward the circuit board carrying device to be tested.

[0022] Furthermore, the circuit board carrying device to be tested is an assembly line;

[0023] The docking drive mechanism is used to drive the automobile central control circuit board testing device to move toward the circuit board carrying device to be tested.

[0024] Furthermore, the probe assembly adjustment structure includes a three-axis moving device and an electromagnet III arranged on the output end of the three-axis moving device, and the electromagnet III is used for magnetically matching with the probe end of the retractable probe.

[0025] The beneficial effect of the present invention is that in the automobile central control circuit board testing device provided by the present invention, the probe assembly can adjust the position of its probe end through the retractable probe and the universal connection structure, thereby controlling the position of the probe end, and through the combination of several probe assemblies, any planar or three-dimensional probe combination form can be realized to adapt to the testing of circuit boards of various combinations, and a single probe assembly is detachably and positionally fixed through an adjustment seat and a magnetic base, so that the number and arrangement of the probe assemblies can be quickly selected, further simplifying the adaptability for testing circuit boards of various combinations.

[0026] In addition, the retractable probe adopts a combination of telescopic and angle-adjustable methods. When multiple probe assemblies are used in combination, the adjustment seats of the multiple probe assemblies can be kept at a certain distance, but the probe ends of the retractable probes are relatively close to each other, thereby achieving a relatively tight arrangement of the probe ends and realizing tight contact testing. At the same time, it can also ensure that the probe ends of multiple retractable probes are in the same plane or different planes, and the adaptability is extremely strong.

[0027] The present invention solves the problem that the current automobile central control circuit board test device has poor versatility and requires a fixture for each circuit board. For manufacturers who produce multiple circuit boards or design circuit boards, the cost of designing circuit board test fixtures can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Attached Figure 1 It is a structural schematic diagram of the present invention;

[0029] Attached Figure 2 It is a schematic diagram of the structure of the probe assembly in the present invention.

[0030] In the figure, 1-magnetic base; 2-probe assembly; 21-adjusting seat; 22-retractable probe; 221-sleeve; 222-probe rod; 2221-slider; 23-universal connection structure; 231-spherical groove; 232-opening; 233-sphere; 24-electromagnet I; 25-strip conductor; 26-electromagnet II; 27-conducting wire; 3-circuit board carrying device; 4-probe assembly adjustment structure; 5-docking drive mechanism; 6-circuit board to be tested. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] As attached Figure 1 -Attached Figure 2 As shown, the present invention provides a vehicle central control circuit board testing device, comprising a magnetic base 1 and a plurality of probe assemblies 2, the number of which can be selected as needed, the probe assembly 2 comprising an adjustment seat 21 and a retractable probe 22, the adjustment seat 21 is magnetically connected to the magnetic base 1, that is, the adjustment seat 21 has a magnetic material at least at one end close to the magnetic base 1 that can be adsorbed by the magnetic base 1, at this time, the probe assembly 2 can be fixed on the magnetic base 1, and can be freely adjusted in position on the magnetic base 1, and the number of probe assemblies 2 on the magnetic base 1 is convenient to increase or decrease, and the retractable probe 22 is adopted, so that the probe end of the retractable probe 22 (the end away from the adjustment seat 21, used to connect with the circuit board 6 to be tested) can be retracted and adjusted in height, one end of the retractable probe 22 is arranged on the adjustment seat 21 through a universal connection structure 23, at this time, the angle of the retractable probe 22 relative to the magnetic base 1 is adjustable, combined with the retractable characteristics of the retractable probe 22, the probe end of the retractable probe 22 is finally realized The position is arbitrarily adjustable, that is, after multiple probe assemblies 2 are combined, different contacts on the same circuit board can be tested, or different circuit boards can be tested, which greatly improves the test practicality of the automobile central control circuit board testing device. The universal connection structure 23 and the retractable probe 22 are both provided with a lock / unlock controller for controlling their activity or locking. Specifically, the lock / unlock controller on the universal connection structure 23 is used to control the locking and unlocking of the universal connection structure 23. When controlling its locking, the retractable probe 22 and the adjustment seat 21 are relatively fixed, and the angle of the retractable probe 22 is fixed at this time. When controlling its unlocking, the retractable probe 22 can be rotated in multiple directions with the universal connection structure 23 as the rotation center, and then the angle of the retractable probe 22 can be adjusted. The lock / unlock controller on the retractable probe 22 is used to control the locking and unlocking of the retractable probe 22. When controlling its locking, the length of the retractable probe 22 is fixed and cannot be retracted. Conversely, when controlling its unlocking, the retractable probe 22 can be retracted to adjust its length.

[0037] In the automobile central control circuit board testing device provided by the present invention, the probe assembly 2 can adjust the position of its probe end through the retractable probe 22 and the universal connection structure 23, thereby controlling the position of the probe end. Through the combination of several probe assemblies 2, any planar or three-dimensional probe combination form can be realized to adapt to the testing of circuit boards of various combinations. Moreover, a single probe assembly 2 is detachably and positionally fixed to the magnetic base 1 through the adjustment seat 21, so that the number and arrangement of the probe assemblies 2 can be quickly selected, further simplifying the adaptability for testing circuit boards of various combinations.

[0038] In addition, the retractable probe 22 is a combination of telescopic and angle-adjustable methods. When multiple probe assemblies 2 are used in combination, the adjustment seats 21 of the multiple probe assemblies 2 can maintain a certain distance, but the probe ends of the retractable probes 22 are relatively close to each other, thereby achieving a relatively tight arrangement of the probe ends and tight contact testing. At the same time, it can also ensure that the probe ends of the multiple retractable probes 22 are in the same plane or different planes, and the adaptability is extremely strong.

[0039] The present invention solves the problem that the current automobile central control circuit board test device has poor versatility and requires a fixture for each circuit board. For manufacturers who produce multiple circuit boards or design circuit boards, the cost of designing circuit board test fixtures can be saved.

[0040] In one embodiment, the universal connection structure 23 includes a spherical groove 231 disposed at one end of the adjustment seat 21 away from the magnetic base 1, and an opening 232 is disposed on the spherical groove 231;

[0041] The universal connection structure 23 also includes a ball 233 disposed at one end of the retractable probe 22, and the ball 233 is embedded in the spherical groove 231. The universal connection structure 23 is formed by the combination of the spherical groove 231 and the ball 233, which has a simple and reliable structure and is convenient for the subsequent locking / unlocking controller arrangement.

[0042] In one embodiment, at least the outer surface of the sphere 233 is provided with magnetic material;

[0043] The locking / unlocking controller of the universal connection structure 23 includes an electromagnet I24 disposed on the inner wall of the spherical groove 231. The electromagnet I24 generates suction force and absorbs magnetic material to restrict the rotation of the sphere 233 in the spherical groove 231. In this embodiment, the locking / unlocking controller of the universal connection structure 23 is directly implemented by an electromagnet I24, which makes the structure simple, the control is convenient and fast, and the cost can be guaranteed.

[0044] In one of the embodiments, the electromagnet 124 is a power-off type electromagnet, that is, it can achieve locking capability when the power is off, and unlock when the power is on, thereby ensuring that no power is consumed when locked for a long time, thereby avoiding waste of power.

[0045] In one embodiment, the retractable probe 22 includes a sleeve 221 and a probe rod 222;

[0046] One end of the sleeve 221 is connected to the universal connection structure 23, and the other end is provided with a slot. One end of the probe rod 222 is slidably set in the sleeve 221, and the other end extends out of the sleeve 221 through the slot. The combination of the sleeve 221 and the probe rod 222 has a simple and reliable structure and is convenient for the subsequent arrangement of the locking / unlocking controller.

[0047] In this embodiment, the end of the extended end of the probe rod 222 is the probe end, and the probe rod 222 can be connected to the outside through a wire 27. The wire 27 can pass through the inside of the sleeve 221 and then connect to the sphere 233 and then lead out through the adjustment seat 21. The specific setting method of the wire 27 can be selected according to actual conditions.

[0048] In one embodiment, a slider 2221 is disposed at the end of the probe rod 222, and the slider 2221 is slidably disposed in the sleeve 221, and the slider 2221 is made of magnetic material;

[0049] The locking / unlocking controller of the retractable probe 22 includes a strip conductor 25 arranged on the inner wall of the sleeve 221 and an electromagnet II 26 connected to the strip conductor 25. The electromagnet II 26 generates suction to magnetically attract the slider 2221 through the strip conductor 25 to limit the movement of the slider 2221 in the sleeve 221. In this embodiment, the strip conductor 25 is used to achieve locking and unlocking when the slider 2221 is in any position, and the overall structure is simple and reliable.

[0050] In one embodiment, the electromagnet II 26 is a power-off type electromagnet, that is, it can achieve locking capability when the power is off, and unlock when the power is on, so as to ensure that no power is consumed when locked for a long time, thereby avoiding waste of power.

[0051] The present invention also provides a vehicle central control circuit board test system, comprising a circuit board carrying device 3 to be tested, a probe assembly adjustment structure 4, a docking drive mechanism 5 and the above-mentioned vehicle central control circuit board test device;

[0052] The circuit board carrier device 3 to be tested is used to carry the circuit board 6 to be tested. Preferably, a circuit board position positioning structure is provided on the circuit board carrier device 3 to be tested to ensure the position accuracy of the circuit board 6 to be tested. The circuit board carrier device 3 to be tested is arranged relative to the automobile central control circuit board test device. The circuit board carrier device 3 to be tested can be located above or below. Therefore, when the circuit board carrier device 3 to be tested is a frame structure and the circuit board 6 to be tested has a double-sided or multi-directional test requirement, an automobile central control circuit board test device can be added to the double sides or other directions of the circuit board carrier device 3 to be tested, so as to perform multi-directional synchronous testing, which is particularly suitable for testing circuit boards installed at different angles in, for example, a central control of an automobile;

[0053] The probe assembly adjustment structure 4 is used to adjust the probe end position of the retractable probe 22 in the automobile central control circuit board testing device. In actual use, since the position control accuracy of the probe end of the probe assembly 2 is required to be high, a mechanical probe assembly adjustment structure 4 can be used to adjust the position of the probe end, which can improve the position control accuracy on the one hand and the control efficiency on the other hand. For example, by inputting coordinates, efficient and high-precision control of multiple probe assemblies 2 can be achieved.

[0054] The docking drive mechanism 5 is used to drive the circuit board carrier device 3 to be tested to move toward the automobile central control circuit board testing device, or to drive the automobile central control circuit board testing device to move toward the circuit board carrier device 3 to be tested, so that the probe end of the probe assembly 2 contacts the test contact of the circuit board 6 to be tested, thereby completing the test.

[0055] In one embodiment, the circuit board carrying device 3 to be tested is an assembly line. In this embodiment, it is particularly suitable for factory inspection of circuit boards, such as batch inspection of circuit board design manufacturers. After replacing the circuit board, only by adjusting the number and arrangement of the probe components 2 on the automobile central control circuit board test device, and the positions of multiple probe ends, the automobile central control circuit board test system can be used for testing another circuit board;

[0056] The docking driving mechanism 5 is used to drive the automobile central control circuit board testing device to move toward the circuit board carrying device 3 to be tested, thereby simplifying the docking between the probe end and the circuit board 6 to be tested.

[0057] In one embodiment, the probe assembly adjustment structure 4 includes a three-axis moving device and an electromagnet III arranged on the output end of the three-axis moving device. The electromagnet III is used to magnetically cooperate with the probe end of the retractable probe 22. In this embodiment, the probe assembly adjustment structure 4 can be conveniently connected and separated from the probe end of the retractable probe 22, and the position of the probe end of the retractable probe 22 can be adjusted.

[0058] The above is only an embodiment and does not limit the present invention in any way. Any person skilled in the art can use the above disclosed technical contents to make many possible changes, modifications or modifications to the technical solutions of the present invention into equivalent embodiments of equivalent changes without departing from the scope of the technical solutions of the present invention. Therefore, any simple modification, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A vehicle central control circuit board testing device, characterized in that: The invention comprises a magnetic base (1) and a plurality of probe assemblies (2), wherein the probe assembly (2) comprises an adjustment seat (21) and a retractable probe (22), wherein the adjustment seat (21) is magnetically connected to the magnetic base (1), and one end of the retractable probe (22) is arranged on the adjustment seat (21) via a universal connection structure (23), and both the universal connection structure (23) and the retractable probe (22) are provided with a locking / unlocking controller for controlling the movement or locking thereof.

2. The automobile central control circuit board testing device as claimed in claim 1, characterized in that: The universal connection structure (23) comprises a spherical groove (231) arranged at one end of the adjustment seat (21) away from the magnetic base (1), and an opening (232) is arranged on the spherical groove (231); The universal connection structure (23) further comprises a spherical body (233) arranged at one end of the retractable probe (22), and the spherical body (233) is embedded in the spherical groove (231).

3. The automobile central control circuit board testing device as claimed in claim 2, characterized in that: At least the outer surface of the sphere (233) is provided with magnetic material; The locking / unlocking controller of the universal connection structure (23) comprises an electromagnet I (24) arranged on the inner wall of the spherical groove (231), wherein the electromagnet I (24) generates suction force to absorb magnetic material, thereby limiting the rotation of the ball (233) in the spherical groove (231).

4. The automobile central control circuit board testing device as claimed in claim 3, characterized in that: The electromagnet I (24) is a de-energized electromagnet.

5. The automobile central control circuit board testing device according to any one of claims 1 to 4, characterized in that: The retractable probe (22) comprises a sleeve (221) and a probe rod (222); One end of the sleeve (221) is connected to the universal connection structure (23), and the other end is provided with a slot; one end of the probe rod (222) is slidably disposed in the sleeve (221), and the other end extends out of the sleeve (221) through the slot.

6. The automobile central control circuit board testing device as claimed in claim 5, characterized in that: A slider (2221) is provided at the end of the probe rod (222), the slider (2221) is slidably disposed in the sleeve (221), and the slider (2221) is made of magnetic material; The locking / unlocking controller of the retractable probe (22) comprises a strip conductor (25) arranged on the inner wall of the sleeve (221) and an electromagnet II (26) connected to the strip conductor (25); the electromagnet II (26) generates a suction force to magnetically attract the slider (2221) through the strip conductor (25), thereby limiting the movement of the slider (2221) in the sleeve (221).

7. The automobile central control circuit board testing device as claimed in claim 6, characterized in that: The electromagnet II (26) is a power-off type electromagnet.

8. A vehicle central control circuit board test system, characterized in that: It comprises a circuit board carrying device (3) to be tested, a probe assembly adjustment structure (4), a docking drive mechanism (5) and an automobile central control circuit board testing device as claimed in any one of claims 1 to 9; The circuit board to be tested carrying device (3) is used to carry the circuit board to be tested (6), and the circuit board to be tested carrying device (3) is arranged opposite to the automobile central control circuit board testing device; The probe assembly adjustment structure (4) is used to adjust the probe end position of the retractable probe (22) in the automobile central control circuit board testing device; The docking drive mechanism (5) is used to drive the circuit board bearing device (3) to be tested to move toward the automobile central control circuit board testing device, or to drive the automobile central control circuit board testing device to move toward the circuit board bearing device (3) to be tested.

9. The automobile central control circuit board testing system as claimed in claim 8, characterized in that: The circuit board bearing device (3) to be tested is an assembly line; The docking drive mechanism (5) is used to drive the automobile central control circuit board testing device to move toward the circuit board bearing device (3) to be tested.

10. The automobile central control circuit board testing system as claimed in claim 8, characterized in that: The probe assembly adjustment structure (4) comprises a three-axis moving device and an electromagnet III arranged on the output end of the three-axis moving device, and the electromagnet III is used for magnetically engaging with the probe end of the retractable probe (22).

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