A vehicle-mounted fault diagnosis device

Abstract

The present invention relates to the technical field of OBD devices, and proposes an on-vehicle fault diagnosis device, which includes an OBD interface, a connector frame, a connector mechanism, a first handle, a fastening connection mechanism, and a welding and docking mechanism. The connector mechanism is used to dock with OBD interfaces with different pin configurations. The first handle is fixedly arranged on one side of the connector frame away from the connector mechanism. The fastening connection mechanism is detachably connected to the OBD interface, and is used to firmly connect the OBD interface to the connector mechanism. The welding and docking mechanism is arranged in the connector frame, and a circuit board is arranged in the welding and docking mechanism. The welding and docking mechanism is detachably connected to the connector mechanism and is used to perform welding connection with the circuit board. Through the above technical solution, the problems in the prior art that the existing on-vehicle fault diagnosis devices are difficult to cope with the OBD interfaces of multiple vehicle manufacturers, and the pin damage during plugging is complicated to repair, resulting in low efficiency during vehicle diagnosis, are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of OBD devices, and specifically, to a vehicle fault diagnosis device. Background Art

[0002] OBD, namely On-Board Diagnostic system, is a system used to monitor the vehicle emission control system and diagnose engine performance problems. The main functions of OBD are to monitor basic vehicle parameters: the OBD system can monitor basic parameters such as mileage, vehicle speed, throttle pedal position, coolant temperature, etc., to help vehicle owners and maintenance personnel understand the operating status of the vehicle; monitor emission-related parameters: one of the core functions of the OBD system is to monitor emission-related parameters, such as the content of various exhaust gases, oxygen content, etc., to ensure that the vehicle meets the emission standards of various countries; vehicle fault diagnosis: when the vehicle fault light is on, maintenance personnel can use an OBD diagnostic instrument to read the fault content and the freeze frame data at the moment of the fault, so as to quickly locate and solve the problem; control function: in some cases, the OBD system can also be used for some control functions, such as adjusting engine parameters, etc., but this part of the function is usually not used in China. The hardware interface of the OBD system is usually a 16-pin DLC, which is located under the instrument panel on the driver's side of the vehicle. This interface allows the diagnostic computer to communicate with the vehicle system, and the generated fault codes can be read by connecting a dedicated computer or an external display. Maintenance personnel can obtain the real-time data of the vehicle through this interface. When OBD was first used, the number of pins and the positions of the OBD interfaces used by each car manufacturer were different. It was not until the OBD standard was released that the number of pins of OBD was fixed.

[0003] However, so far, although the number of pins of OBD has been fixed at 16 pins, there are still differences in the pin spacing among some manufacturers, making it impossible to connect different OBD interfaces with a single connector. At the same time, since the OBD interfaces on vehicles are all set in difficult-to-operate positions such as under the steering wheel, if the pins are not aligned during connection, the pins are very likely to be damaged. Therefore, in order to enable the diagnostic device to be conveniently connected to the OBD interfaces of various vehicles, and to be easily repaired when the pins are damaged, so as to prevent affecting the vehicle inspection work, we propose a vehicle fault diagnosis device. Summary of the Invention

[0004] The present invention proposes a vehicle fault diagnosis device, which solves the problems in the prior art that the existing vehicle fault diagnosis devices are difficult to cope with the OBD interfaces of multiple car manufacturers, and the repair of damaged pins during plugging is complicated, resulting in low efficiency in vehicle diagnosis.

[0005] The technical solution of the present invention is as follows:

[0006] A vehicle-mounted fault diagnosis device includes an OBD interface, a connector frame, a connector mechanism, a first handle, a fastening connection mechanism, and a welding and docking mechanism. The OBD interface is set on a vehicle. The connector mechanism is detachably set on the connector frame. The connector mechanism is used to dock with the OBD interfaces with different pin configurations. The first handle is fixedly set on one side of the connector frame away from the connector mechanism. The fastening connection mechanism is set on the connector frame and is detachably connected to the OBD interface. The fastening connection mechanism is used to firmly connect the OBD interface and the connector mechanism. The welding and docking mechanism is set in the connector frame. A circuit board is set in the welding and docking mechanism. There are two circuit boards. The welding and docking mechanism is detachably electrically connected to the connector mechanism. The welding and docking mechanism is used to perform welding connection with the circuit board.

[0007] The welding and docking mechanism includes a welding block, a first pin hole, and welding pins. The welding block is set in the connector frame. There are multiple first pin holes. The multiple first pin holes are opened on the welding block and arranged in two columns. The first pin holes are detachably connected to the connector mechanism. There are multiple welding pins. The multiple welding pins are fixedly set on one side of the welding block away from the first pin holes. The welding pins correspond to the first pin holes one by one. A bearing plate is fixedly set on one side of the welding block away from the first pin holes. The bearing plate is set between the two columns of welding pins. The circuit board is set on the bearing plate. The two circuit boards are respectively set on both sides of the bearing plate and are welded to the welding pins.

[0008] The connector mechanism includes a first plug, a first pin, and a second pin. The first plug is detachably connected to the connector frame. There are multiple first pins. The multiple first pins are fixedly set on one side of the first plug close to the connector frame. The first pins correspond to the first pin holes one by one and are detachably connected. There are multiple second pins. The first pins correspond to the second pins one by one and are connected. The second pins are set on one side of the first plug away from the connector frame.

[0009] A adapter is detachably connected to the first plug. There are multiple adapters. A second plug is set on the adapter. Multiple third pins are fixedly set in the second plug. There are multiple third pins. Multiple second pin holes are opened on one side of the adapter away from the second plug. The third pins correspond to the second pin holes one by one and are connected. The second pin holes are detachably connected to the second pins. The first plug is detachably connected to the OBD interface. The second plug is detachably connected to the OBD interface.

[0010] The fastening connection mechanism includes slide rails, slider shafts, docking grooves, handle two, and clamping components. There are two slide rails, and the two slide rails are respectively arranged on both sides of the joint frame. There are two slider shafts, and the two slider shafts are respectively slidably arranged on the two slide rails. There are two docking grooves, and the two docking grooves are respectively fixedly arranged on the two sides of the joint frame away from the slide rails. The two ends of handle two are respectively rotatably connected to the two slider shafts. There are two clamping components, and the clamping components are slidably arranged on the docking grooves. The clamping components are rotatably connected to the slider shafts, and the clamping components are used to drive the OBD interface to dock with the joint mechanism.

[0011] The docking groove is provided with a sliding groove and a pressing plate groove. The sliding groove is fixedly arranged on the joint frame, and the clamping component is slidably connected to the sliding groove. There are two pressing plate grooves, and the two pressing plate grooves are fixedly arranged on both sides of the sliding groove. The pressing plate groove is detachably connected to the clamping component. The clamping component includes a clamping frame, a sliding shaft, a deflection shaft, and a connecting rod. There are two clamping frames, and the clamping frames are detachably connected to the OBD interface. The two clamping frames are respectively slidably arranged on the two docking grooves. One end of the clamping frame away from the docking groove is detachably connected to the OBD interface. The sliding shaft is fixedly arranged on the clamping frame, and the sliding shaft is slidably arranged in the sliding groove. There are two deflection shafts, and the two deflection shafts are respectively fixedly installed on both sides of the clamping frame. The deflection shaft is arranged on the side of the sliding shaft away from the docking groove. There are multiple connecting rods, and each deflection shaft is rotatably connected to one connecting rod. The connecting rod is rotatably connected to the slider shaft, and the clamping frame is detachably arranged in the pressing plate groove.

[0012] The working principle and beneficial effects of the present invention are as follows:

[0013] 1. In the present invention, by setting the welding block and the bearing plate, the two circuit boards are separated by the bearing plate to prevent one circuit board from being damaged when the other circuit board burns out. At the same time, the circuit board is connected through the welding pins. Compared with directly welding the circuit board and the pins all the time, when the circuit board or the pin two fails, the damaged part can be replaced and then used again, improving the maintenance efficiency and reducing the maintenance cost.

[0014] 2. In the present invention, by setting the plug one and the plug two, when the plug one does not correspond to the OBD size on the vehicle, a adapter can be connected to the plug one, and the plug two can be used to connect to the OBD interface, so that a diagnostic device can cope with the OBD interfaces of multiple vehicles by replacing the adapter.

[0015] 3. In the present invention, a welding docking mechanism is provided to achieve convenient and stable connection at positions where OBD connection is not easy. By setting a chuck mechanism, different connectors can be used according to different OBD interfaces of different vehicle manufacturers, so as to cope with various vehicles. By setting the welding docking mechanism, when the first plug or the second pin is damaged, the circuit board and the welding block can be removed and connected to other first plugs for use. When the circuit board is burned out, the circuit board can also be quickly replaced, reducing the repair time and reusing the reusable parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure in the present invention;

[0018] Figure 2 It is a schematic diagram of the overall structure from another perspective in the present invention;

[0019] Figure 3 It is a schematic cross-sectional view of the inside of the joint frame in the present invention;

[0020] Figure 4 It is an exploded schematic diagram of the joint mechanism and the welding docking mechanism in the present invention;

[0021] Figure 5 It is a schematic diagram of the fastening connection mechanism in the present invention;

[0022] Figure 6 It is a schematic diagram of the fastening connection mechanism from another perspective in the present invention.

[0023] In the figure: 1, OBD interface; 2, joint frame; 3, first handle; 4, circuit board; 5, welding block; 6, first pin hole; 7, welding pin; 8, bearing plate; 9, first plug; 10, first pin; 11, second pin; 12, adapter; 13, second plug; 14, third pin; 15, second pin hole; 16, slide rail; 17, slider rotating shaft; 18, docking groove; 19, second handle; 20, sliding groove; 21, pressing plate groove; 22, clamping frame; 23, sliding shaft; 24, deflecting shaft; 25, connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present invention.

[0025] AsFigures 1 to 6 As shown in the figure, this embodiment proposes an on-vehicle fault diagnosis device, which includes an OBD interface 1, a connector box 2, a connector mechanism, a first handle 3, a fastening connection mechanism, and a welding and docking mechanism. The OBD interface 1 is arranged on the vehicle. The connector mechanism is detachably arranged on the connector box 2. The connector mechanism is used to dock with the OBD interface 1 with different pins. The first handle 3 is fixedly arranged on one side of the connector box 2 away from the connector mechanism. The fastening connection mechanism is arranged on the connector box 2. The fastening connection mechanism is detachably connected to the OBD interface 1. The fastening connection mechanism is used to firmly connect the OBD interface 1 and the connector mechanism. The welding and docking mechanism is arranged in the connector box 2. A circuit board 4 is arranged in the welding and docking mechanism. There are two circuit boards 4. The welding and docking mechanism is detachably electrically connected to the connector mechanism. The welding and docking mechanism is used to perform welding connection with the circuit board 4. Through the welding and docking mechanism, a convenient and stable connection can be made at a position where it is not convenient to perform OBD connection. Through the chuck mechanism, different connectors can be used according to different OBD interfaces 1 of different vehicle manufacturers, so as to cope with multiple vehicles. Through the welding and docking mechanism, when the first plug 9 or the second pin 11 is damaged, the circuit board 4 and the welding block 5 can be removed and connected to other first plugs 9 for use. When the circuit board 4 is burned out, the circuit board 4 can also be quickly replaced, reducing the repair time and reusing the reusable parts at the same time.

[0026] As Figures 1 to 4 shown in the figure, the welding and docking mechanism includes a welding block 5, a first pin hole 6, and welding pins 7. The welding block 5 is arranged in the connector box 2. There are multiple first pin holes 6. The multiple first pin holes 6 are opened on the welding block 5 and arranged in two columns. The first pin holes 6 are detachably connected to the connector mechanism. There are multiple welding pins 7. The multiple welding pins 7 are fixedly arranged on one side of the welding block 5 away from the first pin holes 6. The welding pins 7 correspond to the first pin holes 6 one by one. A carrier plate 8 is fixedly arranged on one side of the welding block 5 away from the first pin holes 6. The carrier plate 8 is arranged between the two columns of welding pins 7. The circuit board 4 is arranged on the carrier plate 8. The two circuit boards 4 are respectively arranged on both sides of the carrier plate 8 and are welded to the welding pins 7. The two circuit boards 4 are respectively welded to the welding pins 7 on both sides of the carrier plate 8. Through the carrier plate 8, it can be prevented that when one circuit board 4 is burned out, it will affect the other circuit board 4. The circuit board 4 is connected to the first plug 9 through the welding block 5. When the circuit board 4 is burned out or the second pin 11 above the plug is damaged, the circuit board 4 can be directly removed through the welding block 5 for replacement.

[0027] As Figures 3 to 4As shown in the figure, the joint mechanism includes a first plug 9, a first pin 10, and a second pin 11. The first plug 9 is detachably connected to the joint frame 2. There are multiple first pins 10, and the multiple first pins 10 are fixedly arranged on one side of the first plug 9 close to the joint frame 2. The first pins 10 correspond to and are detachably connected to the first pin holes 6 one by one. There are multiple second pins 11, the first pins 10 correspond to and are connected to the second pins 11 one by one. The second pins 11 are arranged on the side of the first plug 9 away from the joint frame 2. The first pins 10 are connected to the circuit board 4 through the first pin holes 6, and the first pin holes 6 are connected to the circuit board 4 through the welding pins 7. Therefore, when the first plug 9 is directly connected to the OBD interface 1 of the corresponding specification, if the second pin 11 is damaged and needs to be repaired, the welding block 5 can be directly removed from the first pin 10.

[0028] As Figures 3 to 4 shown in the figure, there is a adapter 12 detachably connected to the first plug 9. There are multiple adapters 12. There is a second plug 13 arranged on the adapter 12. There are multiple third pins 14 fixedly arranged in the second plug 13. There are multiple third pins 14. On the side of the adapter 12 away from the second plug 13, there are multiple second pin holes 15 opened. The third pins 14 correspond to and are connected to the second pin holes 15 one by one. The second pin holes 15 are detachably connected to the second pins 11. The first plug 9 is detachably connected to the OBD interface 1, and the second plug 13 is detachably connected to the OBD interface 1. The second pin holes 15 on the adapter 12 are connected to the second pins 11. Due to the different spacings of the third pins 14 on different adapters 12, multiple different adapters 12 can be used to cope with the OBD interfaces 1 of multiple manufacturers. At the same time, when the third pins 14 are bent and damaged during installation, only by replacing the adapter 12 can the work continue, which improves the efficiency and reduces the maintenance cost.

[0029] As Figures 1 to 6 shown in the figure, the fastening connection mechanism includes slide rails 16, slider shafts 17, docking grooves 18, a second handle 19, and a clamping assembly. There are two slide rails 16, and the two slide rails 16 are respectively opened on both sides of the joint frame 2. There are two slider shafts 17, and the two slider shafts 17 are respectively slidably arranged on the two slide rails 16. There are two docking grooves 18, and the two docking grooves 18 are respectively fixedly arranged on the two sides of the joint frame 2 away from the slide rails 16. The two ends of the second handle 19 are respectively rotatably connected to the two slider shafts 17. There are two clamping assemblies, and the clamping assemblies are slidably arranged on the docking grooves 18. The clamping assemblies are rotatably connected to the slider shafts 17. The clamping assemblies are used to drive the OBD interface 1 to dock with the joint mechanism. When the clamping assemblies clamp the OBD interface 1, by pulling the second handle 19, the OBD interface 1 can be pulled to dock with the first plug 9 or the second plug 13, so that the operation can be carried out with one hand, which improves the docking efficiency for difficult-to-operate positions and reduces the possibility of pin damage at the same time.

[0030] AsFigures 5 to 6 As shown, a sliding groove 20 and a pressing plate groove 21 are provided on the docking groove 18. The sliding groove 20 is fixedly arranged on the joint frame 2. The clamping assembly is slidably connected to the sliding groove 20. There are two pressing plate grooves 21, and the two pressing plate grooves 21 are fixedly arranged on both sides of the sliding groove 20. The pressing plate groove 21 is detachably connected to the clamping assembly. The clamping assembly includes a clamping frame 22, a sliding shaft 23, a deflection shaft 24 and a connecting rod 25. There are two clamping frames 22, and the clamping frame 22 is detachably connected to the OBD interface 1. The two clamping frames 22 are respectively slidably arranged on the two docking grooves 18. One end of the clamping frame 22 far from the docking groove 18 is detachably connected to the OBD interface 1. The sliding shaft 23 is fixedly arranged on the clamping frame 22, and the sliding shaft 23 is slidably arranged in the sliding groove 20. There are two deflection shafts 24, and the two deflection shafts 24 are respectively fixedly installed on both sides of the clamping frame 22. The deflection shaft 24 is arranged on the side of the sliding shaft 23 far from the docking groove 18. There are multiple connecting rods 25, and one connecting rod 25 is rotatably connected to each deflection shaft 24. The connecting rod 25 is rotatably connected to the slider rotating shaft 17. The clamping frame 22 is detachably arranged in the pressing plate groove 21. Push the handle two 19 forward, and the slider rotating shaft 17 can push the connecting rod 25. The connecting rod 25 pushes the clamping frame 22 to move outside the pressing plate groove 21. When the sliding shaft 23 moves to one end of the sliding groove 20 far from the handle two 19, the clamping frame 22 rotates and opens, moving the OBD interface 1 between the two clamping frames 22. Pull the handle two 19, so that the connecting rod 25 pulls the two clamping frames 22 to rotate through the sliding shaft 23 in the sliding groove 20 and clamp the OBD interface 1. When the two clamping frames 22 are in contact, the clamping frame 22 can slide into the pressing plate groove 21. At this time, the clamping frame 22 slides in the pressing plate groove 21, the sliding shaft 23 slides in the sliding groove 20, and the slider rotating shaft 17 slides on the slide rail 16, so that the clamping frame 22 drives the OBD interface 1 to dock with the plug one 9 or the plug two 13.

[0031] In this embodiment, the pin hole one 6 on the welding block 5 is docked with the pin one 10, and the joint frame 2 is docked with the plug one 9. The adapter 12 corresponding to the vehicle OBD interface 1 and the plug one 9 are docked. The pin two 11 is docked with the pin hole two 15. Move the OBD interface 1 between the two clamping frames 22. Pull the handle two 19, so that the connecting rod 25 pulls the two clamping frames 22 to rotate through the sliding shaft 23 in the sliding groove 20 and clamp the OBD interface 1. When the two clamping frames 22 are in contact, the clamping frame 22 can slide into the pressing plate groove 21. At this time, the clamping frame 22 slides in the pressing plate groove 21, the sliding shaft 23 slides in the sliding groove 20, and the slider rotating shaft 17 slides on the slide rail 16. The clamping frame 22 drives the OBD interface 1 to dock with the plug two 13, and the pin three 14 is inserted into the connection hole on the OBD interface 1.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An on-vehicle fault diagnosis device, comprising an OBD interface (1), wherein the OBD interface (1) is arranged on a vehicle, and is characterized in that, Further comprising: Adapter frame (2); An adapter mechanism detachably disposed on the adapter frame (2) and configured to dock with the OBD interface (1) having different pin configurations; A first handle (3) fixedly disposed on a side of the adapter frame (2) away from the adapter mechanism; A fastening connection mechanism disposed on the adapter frame (2) and detachably connected to the OBD interface (1), the fastening connection mechanism being configured to tightly connect the OBD interface (1) to the adapter mechanism; The fastening connection mechanism includes: Two slide rails (16) respectively provided on two sides of the adapter frame (2); Two slider shafts (17) respectively slidably disposed on the two slide rails (16); The fastening connection mechanism includes: Two docking grooves (18) respectively fixedly provided on two sides of the adapter frame (2) away from the slide rails (16); A second handle (19) having two ends respectively rotatably connected to the two slider shafts (17); Two clamping assemblies slidably disposed on the docking grooves (18), the clamping assemblies being rotatably connected to the slider shafts (17) and configured to drive the OBD interface (1) to dock with the adapter mechanism; On the docking groove (18) are provided: A sliding groove (20) fixedly provided on the adapter frame (2), the clamping assembly being slidably connected to the sliding groove (20); Two pressing plate grooves (21) respectively fixedly provided on two sides of the sliding groove (20), the pressing plate grooves (21) being detachably connected to the clamping assembly; The clamping assembly includes: Two clamping frames (22) detachably connected to the OBD interface (1), the two clamping frames (22) respectively slidably disposed on the two docking grooves (18), and one end of the clamping frame (22) away from the docking groove (18) being detachably connected to the OBD interface (1); A sliding shaft (23) fixedly provided on the clamping frame (22) and slidably disposed in the sliding groove (20); Two deflection shafts (24) respectively fixedly mounted on two sides of the clamping frame (22), the deflection shafts (24) being disposed on a side of the sliding shaft (23) away from the docking groove (18); Connecting rods (25), with a plurality of said connecting rods (25) provided, and one of said connecting rods (25) is rotatably connected to each of said offset shafts (24), and the said connecting rod (25) is rotatably connected to the said slider shaft (17); A welding docking mechanism, which is arranged in the said joint frame (2), a circuit board (4) is arranged in the said welding docking mechanism, there are two of said circuit boards (4), the said welding docking mechanism is detachably electrically connected to the said joint mechanism, and the said welding docking mechanism is used for welding connection with the said circuit board (4).

2. The on-vehicle fault diagnosis device according to claim 1, characterized in that, The said welding docking mechanism includes: Welding blocks (5), which are arranged in the said joint frame (2); Pin holes one (6), with a plurality of said pin holes one (6) provided, and a plurality of said pin holes one (6) are opened on the said welding block (5) and arranged in two columns, and the said pin holes one (6) are detachably connected to the said joint mechanism; Welding pins (7), with a plurality of said welding pins (7) provided, and a plurality of said welding pins (7) are fixedly arranged on the side of the said welding block (5) away from the said pin holes one (6), and the said welding pins (7) correspond to the said pin holes one (6) one by one.

3. The on-vehicle fault diagnosis device according to claim 2, characterized in that, A bearing plate (8) is fixedly arranged on the side of the said welding block (5) away from the said pin holes one (6), the said bearing plate (8) is arranged between two columns of said welding pins (7), the said circuit board (4) is arranged on the said bearing plate (8), and two of said circuit boards (4) are respectively arranged on both sides of the said bearing plate (8) and are welded to the said welding pins (7).

4. An on-vehicle fault diagnosis device according to claim 3, characterized in that, The said joint mechanism includes: Plug one (9), which is detachably connected to the said joint frame (2); Pins one (10), with a plurality of said pins one (10) provided, and a plurality of said pins one (10) are fixedly arranged on the side of the said plug one (9) close to the said joint frame (2), and the said pins one (10) correspond to the said pin holes one (6) one by one and are detachably connected; Pins two (11), with a plurality of said pins two (11) provided, the said pins one (10) correspond to the said pins two (11) one by one and are connected, and the said pins two (11) are arranged on the side of the said plug one (9) away from the said joint frame (2).

5. An on-vehicle fault diagnosis device according to claim 4, characterized in that, A plurality of adapter joints (12) are detachably connected to the said plug one (9), a plug two (13) is arranged on the said adapter joint (12), a plurality of pins three (14) are fixedly arranged in the said plug two (13), there are a plurality of said pins three (14), a plurality of pin holes two (15) are opened on the side of the said adapter joint (12) away from the said plug two (13), the said pins three (14) correspond to the said pin holes two (15) one by one and are connected, and the said pin holes two (15) are detachably connected to the said pins two (11).

6. The on-vehicle fault diagnosis device according to claim 5, characterized in that, The said plug one (9) is detachably connected to the OBD interface (1), and the said plug two (13) is detachably connected to the OBD interface (1).

Images