An automotive fault detection apparatus

Abstract

This utility model provides an automotive fault detection device, belonging to the field of automotive fault detection technology. It includes a Bluetooth junction box with a connector plugped into its bottom. A data cable is fixed to the bottom of the connector, and a diagnostic plug is fixed to the other end of the data cable. An adapter is plugged into the other end of the diagnostic plug. A fixing component is also included, used to assist in fixing the connector plug and the diagnostic plug. The fixing component is connected to both the Bluetooth junction box and the adapter. This utility model simplifies the connection process by using a fixing component, effectively saving time in connecting and disconnecting the adapter. This allows repair personnel to complete the testing work more quickly, improving overall work efficiency. Simultaneously, it ensures a tight and reliable connection between the diagnostic plug and the adapter, reducing data transmission problems caused by unstable connections, ensuring the accuracy and integrity of fault detection data, and improving the accuracy of fault detection.

Description

Technical Field

[0001] This utility model relates to the field of automotive fault detection, and in particular to an automotive fault detection device. Background Technology

[0002] In the automotive repair and used car acquisition industry, automotive fault detection equipment is an indispensable tool. Currently, common automotive fault detection equipment mainly consists of a tablet computer, a Bluetooth junction box, and a data cable. The two ends of the data cable are connected to the Bluetooth junction box and the vehicle's fault detection interface, respectively, to achieve data transmission and help repair personnel or acquisition personnel accurately obtain vehicle fault information.

[0003] In practical applications, due to the variety of vehicle types and production years, the shapes of fault detection interfaces of different vehicles vary significantly. In order to ensure that the fault detection equipment can be adapted to various vehicle models, it is usually necessary to plug different types of adapters into one end of the data cable to connect it to the vehicle fault detection interface, thereby ensuring the universality of the equipment. Among the many adapters, the OBD connector is a relatively common one.

[0004] Since the vehicle fault detection interface is generally located on the lower left side of the driver's cab near the door, the space in this area is relatively limited. The narrow space increases the difficulty of plugging in the OBD connector. Furthermore, the numerous conductor slots inside the OBD connector make the connection stability between it and the vehicle fault detection interface crucial for the accurate transmission of vehicle fault detection data. However, existing OBD adapters use a traditional connection method, requiring the OBD adapter to be plugged into one end of the data cable and then tightened using bolts on both sides of the data cable. This cumbersome process, coupled with the need to loosen the OBD adapter again after detection, further increases operation time and affects detection efficiency. While direct plugging is simpler, it cannot guarantee connection stability, easily leading to data transmission interruptions or errors, affecting the accuracy and efficiency of fault detection. Therefore, this invention provides an automotive fault detection device to meet these needs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an automotive fault detection device. By setting a fixing component, the connection process is simplified, and the time for connecting and disassembling the adapter is saved. The above setting can solve the problem of cumbersome operation steps caused by fixing the two ends of the data cable with bolts.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A vehicle fault detection device includes a Bluetooth junction box, a connector plug at the bottom of the Bluetooth junction box, a data cable fixed at the bottom of the connector plug, a diagnostic plug fixed at the other end of the data cable, and an adapter plugged into the other end of the diagnostic plug; and a fixing component for assisting in fixing the connector plug and the diagnostic plug, the fixing component being connected to the Bluetooth junction box and the adapter respectively.

[0007] Optionally, the fixing component includes a fixing base one and a fixing base two, both of which can slide on the surface of the data cable. The fixing base one is snapped into the bottom of the Bluetooth junction box, and the inner wall of the fixing base one is in contact with the outer wall of the connector. The fixing base two is snapped into the adapter, and the inner wall of the fixing base two is in contact with the outer wall of the diagnostic connector.

[0008] Optionally, the bottom of the Bluetooth junction box is provided with a slot, and the top of the mounting base is fixed with a block, and the slot and the block engage in a locking mechanism.

[0009] Optionally, a conduit is fixed to the bottom of the mounting base, and one end of the data cable passes through the conduit and is fixed to the diagnostic plug.

[0010] Optionally, anti-slip grooves are provided on both sides of the fixing base.

[0011] Optionally, two fixing bases are provided, and the two fixing bases are snapped together. A connecting frame is fixed at the bottom of the two fixing bases. The connecting frame is flexible, and one end of the data cable passes through the connecting frame and is fixed to the bottom of the fixing base.

[0012] Optionally, a connecting block is fixed to one side of one of the fixing seats, and a connecting groove is provided on one side of the other fixing seat, wherein the connecting block and the connecting groove are engaged.

[0013] Optionally, each of the two fixing seats has a locking block two fixed on its inner side, and the locking blocks two fixed on the same inner side of the two fixing seats fit together. The adapter has a slot two on both sides, and the two fitting locking blocks two engage with the slot two at the same time.

[0014] Optionally, both sides of the two fixing seats are fixed with anti-slip protrusions, which engage with the anti-slip grooves.

[0015] Optionally, the cross-sections of the slot one, the anti-slip groove, the connecting groove, and the slot two all taper from the inside out.

[0016] Compared with the prior art, this utility model has at least the following beneficial effects: In the above solution, by setting fixed components, the connection process is simplified, thereby effectively saving time in connecting and disassembling adapters. This allows maintenance personnel to complete the testing work more quickly, improving overall work efficiency. At the same time, it ensures a tight and reliable connection between the diagnostic plug and the adapter, reducing data transmission problems caused by unstable connections, ensuring the accuracy and integrity of fault detection data, and improving the accuracy of fault detection.

[0017] By setting two fixed bases, a second locking block, and a second locking slot, not only is a quick connection between the fixed base and the adapter achieved, but the stability of the connection between the fixed base and the adapter is also enhanced. This ensures a stable connection between the diagnostic plug and the adapter during insertion and diagnosis, which is beneficial for ensuring stable data transmission.

[0018] By using conduits and connectors, the bending section at the connection points between the data cable and the connectors / diagnostic plugs can be extended, reducing the number and extent of bends at these connections. Simultaneously, the conduits and connectors provide additional support and protection for the data cable, lowering the risk of damage from bending and thus further ensuring the stability of data transmission.

[0019] By setting anti-slip protrusions and anti-slip grooves, not only is the friction between the repair personnel's fingers and fixing base one and fixing base two increased, improving the fixing efficiency of fixing base one and fixing base two, but it can also effectively organize the data cables, reduce the space occupied by storage, and make the storage of data cables more orderly. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0021] Figure 1 A three-dimensional structural diagram of an automotive fault detection device; Figure 2 A schematic diagram of the 3D structure of the Bluetooth junction box; Figure 3 An exploded three-dimensional structural diagram of the mating of the wiring plug and the mounting base; Figure 4 An exploded three-dimensional structural diagram of the fitting of the plug, adapter, and mounting base 2 for diagnostic purposes; Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 A three-dimensional structural diagram illustrating the fit between the diagnostic plug and the unfolded mounting base 2; Figure 7 for Figure 6 Enlarged structural diagram at point D; Figure 8 A schematic diagram of the three-dimensional structure of the mating of fixing seat one and fixing seat two; Figure 9 A three-dimensional structural diagram of the snap-fit ​​connection between fixing seat one and fixing seat two; Figure 10 for Figure 9 Enlarged structural diagram at point B; Figure 11 A three-dimensional structural diagram showing the unfolded state of fixed base one and fixed base two; Figure 12 for Figure 11 Enlarged structural diagram at point C.

[0022] Figure label: 1. Bluetooth junction box; 2. Connector plug; 3. Data cable; 4. Diagnostic plug; 5. Slot 1; 6. Mounting base 1; 7. Block 1; 8. Conduit; 9. Anti-slip groove; 10. Mounting base 2; 11. Connecting bracket; 12. Connecting block; 13. Connecting groove; 14. Block 2; 15. Adapter; 16. Slot 2; 17. Anti-slip protrusion.

[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0024] The present invention provides a vehicle fault detection device in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0025] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0026] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0027] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0028] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0029] like Figures 1 to 12As shown, an embodiment of this utility model provides an automotive fault detection device, including a Bluetooth junction box 1. A connector 2 is plugged into the bottom of the Bluetooth junction box 1, and a data cable 3 is fixed to the bottom of the connector 2. A diagnostic connector 4 is fixed to the other end of the data cable 3, and an adapter 15 is plugged into the other end of the diagnostic connector 4. The adapter 15 is matched and plugged into the vehicle fault detection interface, introducing the vehicle's output signal into the diagnostic connector 4. The diagnostic connector 4 acts as a signal relay station, transmitting the signal through the data cable 3 to the connector 2, and then the connector 2 transmits the signal to the Bluetooth junction box 1. In use, the repair personnel first connect the Bluetooth... Connect junction box 1 to connector 2, then select adapter 15 compatible with the vehicle being tested, and connect diagnostic connector 4 to adapter 15. Ensure data cable 3 is properly connected. Insert adapter 15 into the vehicle's fault detection interface, turn on the power to Bluetooth junction box 1, open the fault detection software on the tablet, search for and pair the Bluetooth signal of Bluetooth junction box 1. After successful pairing, the technician sends a command to read vehicle data through the software interface on the tablet. After receiving the command, Bluetooth junction box 1 requests data from the vehicle's electronic control unit via data cable 3, diagnostic connector 4, and adapter 15. The vehicle's electronic control unit outputs data through a fault detection interface, which is then transmitted to Bluetooth junction box 1 via adapter 15, diagnostic plug 4, and data cable 3. Bluetooth junction box 1 then sends the data to a tablet computer via Bluetooth. The fault detection software on the tablet computer parses and analyzes the received data, displaying the vehicle's fault information and operating status. Repair personnel diagnose and repair the vehicle based on the fault information displayed by the software. After repair, the fault codes on the tablet computer can be cleared, and the data can be read again to confirm whether the vehicle has returned to normal. The operation and detection process of the automotive fault detection equipment is disclosed as prior art and will not be elaborated further here. A fixing component is used to assist in fixing the wiring plug 2 and diagnostic plug 4. The fixing component is connected to Bluetooth junction box 1 and adapter 15 respectively, simplifying the connection process and effectively saving time in connecting and disconnecting the adapter. This allows repair personnel to complete the detection work faster, improving overall work efficiency. Simultaneously, it ensures a tight and reliable connection between the diagnostic plug and the adapter, reducing data transmission problems caused by unstable connections, ensuring the accuracy and integrity of fault detection data, and improving the accuracy of fault detection.

[0030] As one implementation method in this embodiment, such as Figure 1 and Figures 3 to 4As shown, the fixing assembly includes a first fixing seat 6 and a second fixing seat 10. Both the first fixing seat 6 and the second fixing seat 10 can slide on the surface of the data cable 3. The first fixing seat 6 is snapped into the bottom of the Bluetooth junction box 1, and the inner wall of the first fixing seat 6 is in contact with the outer wall of the connector 2. The second fixing seat 10 is snapped into the adapter 15, and the inner wall of the second fixing seat 10 is in contact with the outer wall of the diagnostic connector 4. When the connector 2 is plugged into the Bluetooth junction box 1, the first fixing seat 6 is snapped into the bottom of the Bluetooth junction box 1, which can quickly fix the connector 2. When the diagnostic connector 4 is plugged into the adapter 15, the second fixing seat 10 is snapped into the adapter 15, which can quickly fix the diagnostic connector 4, effectively shortening the fixing time and improving work efficiency. At the same time, the first fixing seat 6 and the second fixing seat 10 can slide on the surface of the data cable 3. When fixing, it is only necessary to slide the first fixing seat 6 and the second fixing seat 10 until they are in contact with the bottom of the connector 2 and the diagnostic connector 4, respectively.

[0031] In this embodiment, as Figures 1 to 3 As shown, the bottom of the Bluetooth junction box 1 has a slot 5, and the top of the mounting base 6 has a locking block 7. The slot 5 and the locking block 7 engage with each other. In use, simply align the locking block 7 on the top of the mounting base 6 with the slot 5 on the bottom of the Bluetooth junction box 1 and press gently to complete the engagement. This provides clear installation guidance for the mounting base 6 and the Bluetooth junction box 1, effectively shortening the assembly time. At the same time, the manufacturing process of the slot 5 and the locking block 7 is relatively simple, requiring no complex processing equipment and processes, reducing manufacturing costs and thus helping to reduce material costs.

[0032] In this embodiment, as Figure 3 As shown, a conduit 8 is fixed to the bottom of the mounting base 6. One end of the data cable 3 passes through the conduit 8 and is fixed to the diagnostic plug 4. The conduit 8 can extend the bent part at the connection between the data cable 3 and the connector 2, effectively reducing the number and degree of bending at the connection, providing additional support and protection for the data cable 3, and thus helping to ensure the stability and reliability of data transmission.

[0033] In this embodiment, as Figure 3 As shown, anti-slip grooves 9 are provided on both sides of the fixing seat 6. When installing or removing the fixing seat 6, the maintenance personnel need to hold the fixing seat 6 with their hands to operate. The anti-slip grooves 9 increase the friction between the fingers and the fixing seat 6, so that the maintenance personnel can hold the fixing seat 6 more firmly, which is conducive to improving the fixing efficiency of the fixing seat 6.

[0034] In this embodiment, as Figures 4 to 12As shown, there are two fixing seats 10. One fixing seat 10 has a connecting block 12 fixed on one side, and the other fixing seat 10 has a connecting groove 13 on one side. The connecting block 12 and the connecting groove 13 are engaged. The engagement of the connecting block 12 and the connecting groove 13 provides a clear positioning guide for the assembly of the two fixing seats 10, ensuring that the two fixing seats 10 can be accurately aligned. In use, simply align the connecting block 12 of one fixing seat 10 with the connecting groove 13 of the other fixing seat 10 and press gently to complete the engagement of the two fixing seats 10. Both fixing seats 10 have locking blocks 14 fixed on their inner sides. The locking blocks 14 fixed on the same inner side of the two fixing seats 10 fit together. Both sides of adapter 15 have slots 16. Two mating blocks 14 engage with slots 16, forming spherical protrusions that engage with slots 16. This provides maintenance personnel with multiple hand positions when connecting adapter 15. Whether holding one side of a mounting base 10, the connection point of two mounting bases 10, or the side of the two mounting bases 10 that is far apart, pressure can be applied to the engagement between the blocks 14 and slots 16. This not only enables quick connection between mounting bases 10 and adapter 15 but also enhances the stability of the engagement. Furthermore, it facilitates easy connection and diagnostics between the diagnostic plug 4 and adapter 15. The connection is stable. Both sides of the two mounting brackets 10 are fixed with anti-slip protrusions 17. These protrusions increase the friction between fingers and the mounting brackets 10, allowing maintenance personnel to grip them more firmly and improving their fixing efficiency. The anti-slip protrusions 17 engage with the anti-slip grooves 9. After use, engaging the anti-slip protrusions 17 with the anti-slip grooves 9 effectively organizes the data cable 3, allowing it to be neatly and compactly stored, reducing storage space. Furthermore, the engagement of the anti-slip protrusions 17 and the anti-slip grooves 9 ensures that the data cable 3 will not loosen when stored, making its storage more orderly. A [missing information - likely a device or feature] is fixed to the bottom of each of the two mounting brackets 10. The connecting bracket 11 is used to connect two fixed seats 10. The connecting bracket 11 is flexible and will deform when the two fixed seats 10 are opened and closed, so that the two fixed seats 10 are always connected. One end of the data cable 3 passes through the connecting bracket 11 and is fixed to the bottom of the fixed seat 6. At the same time, the connecting bracket 11 also has a similar function to the wire tube 8 mentioned above. The connecting bracket 11 can extend the bending part at the connection between the data cable 3 and the diagnostic plug 4, reduce the number and degree of bending at the connection between the data cable 3 and the diagnostic plug 4. At the same time, the connecting bracket 11 provides additional support and protection for the data cable 3, reducing the risk of damage to the data cable 3 caused by bending, which is conducive to further ensuring the stability of data transmission.

[0035] In this embodiment, as Figure 12As shown, the cross-sections of the slots 1-5, 9-slip groove, 13-connecting groove, and 16-slip groove are all tapering from the inside out. This causes the first block 7, the second block 14, the connecting block 12, and the anti-slip protrusion 17 to be squeezed by the sidewalls of the slots after they are respectively inserted into the slots 1-5, 9-slip groove, 13-connecting groove, and 16-slip groove. This increases the friction and clamping force between them and the corresponding slots, thereby ensuring the firmness and stability of the clamping and ensuring the smooth progress of vehicle fault detection.

[0036] The working principle of the technical solution provided by this utility model is as follows: When in use, the maintenance personnel hold the anti-slip grooves 9 on both sides of the fixing base 6, slide the fixing base 6 on the surface of the data cable 3, align the top of the fixing base 6 with the slot 5 at the bottom of the Bluetooth junction box 1, and gently press to complete the insertion and fixing of the Bluetooth junction box 1 and the connector 2. Then select the adapter 15 that is compatible with the vehicle being tested, plug the diagnostic plug 4 into the adapter 15, align the connecting block 12 of one fixing seat 2 10 with the connecting groove 13 of the other fixing seat 2 10, and gently press to complete the snap-fit ​​of the two fixing seats 2 10. At this time, the snap-fit ​​blocks 2 14 fixed on the same inner side of the two fixing seats 2 10 fit together to form a spherical protrusion. Hold the anti-slip protrusions 17 on both sides of the two fixing seats 2 10 and slide the two fixing seats 2 10 on the surface of the data cable 3 close to the adapter 15, and snap the two fitting snap-fit ​​blocks 2 14 into the snap-fit ​​grooves 2 16 on both sides of the adapter 15, thus realizing a quick and stable connection between the fixing seat 2 10 and the adapter 15. Ensure data cable 3 is properly connected. Hold either of the two mounting brackets 10 and insert adapter 15 into the vehicle's fault detection interface. Turn on the power to Bluetooth junction box 1. Open the fault detection software on the tablet and search for and pair the Bluetooth signal of Bluetooth junction box 1. After successful pairing, the technician sends a command to read vehicle data through the software interface on the tablet. After receiving the command, Bluetooth junction box 1 requests data from the vehicle's electronic control unit through data cable 3, diagnostic plug 4, and adapter 15. The vehicle's electronic control unit outputs the data through the fault detection interface, which is then transmitted to Bluetooth junction box 1 via adapter 15, diagnostic plug 4, and data cable 3. Bluetooth junction box 1 then sends the data to the tablet via Bluetooth. The fault detection software on the tablet parses and analyzes the received data, displaying the vehicle's fault information and operating status. Based on the fault information displayed by the software, the technician performs fault diagnosis and repair on the vehicle. After the repair is completed, the fault codes of the vehicle can be cleared through the fault detection software on the tablet, and the data can be read again to confirm whether the vehicle has returned to normal. After the test is completed, disconnect the Bluetooth connection and turn off the Bluetooth junction box 1. Place the tablet computer in the storage box. Hold any part of the two fixing seats 10 and pull the adapter 15 out of the vehicle's fault detection interface. Press the two fixing seats 10 together to disengage the locking block 14 from the locking slot 16. Then pull out the adapter 15 and place it in the storage box. Press the two fixing seats 10 together again. Pull the Bluetooth junction box 1 and fixing seat 6 to release the fixing and limiting of the connector 2. After pulling out the connector 2, first place the Bluetooth junction box 1 in the storage box. Then place the fixing seat 6 and the two fixing seats 10 opposite each other and engage the anti-slip protrusion 17 in the anti-slip groove 9. Organize the data cable 3 and then place it in the storage box.

[0037] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An automotive fault detection apparatus comprising a Bluetooth junction box, characterized by, The bottom of the Bluetooth junction box is provided with a connector plug, a data cable is fixed to the bottom of the connector plug, a diagnostic plug is fixed to the other end of the data cable, and an adapter is connected to the other end of the diagnostic plug. A fixing component is provided to assist in fixing the wiring plug and the diagnostic plug, and the fixing component is connected to the Bluetooth junction box and the adapter, respectively.

2. The automotive fault detection equipment according to claim 1, characterized in that, The fixing component includes a fixing base one and a fixing base two. Both fixing base one and fixing base two can slide on the surface of the data cable. Fixing base one is snapped into the bottom of the Bluetooth junction box. The inner wall of fixing base one is in contact with the outer wall of the connector. Fixing base two is snapped into the adapter. The inner wall of fixing base two is in contact with the outer wall of the diagnostic connector.

3. The automobile failure detection device according to claim 2, characterized by The bottom of the Bluetooth junction box has a slot, and the top of the mounting base has a block. The slot and the block engage with each other.

4. The automotive fault detection equipment according to claim 2, characterized in that, A conduit is fixed to the bottom of the mounting base, and one end of the data cable passes through the conduit and is fixed to the diagnostic plug.

5. The automobile failure detection device according to claim 3, characterized by The fixed base has anti-slip grooves on both sides.

6. The automobile failure detection device according to claim 5, characterized by Two fixing bases are provided, and the two fixing bases are snapped together. A connecting frame is fixed to the bottom of the two fixing bases. The connecting frame is flexible, and one end of the data cable passes through the connecting frame and is fixed to the bottom of the fixing base.

7. The automobile failure detection device according to claim 6, characterized by One of the two fixed bases has a connecting block fixed on one side, and the other fixed base has a connecting groove on one side, with the connecting block engaging with the connecting groove.

8. The automobile failure detection device according to claim 7, characterized by Both of the two fixing seats are fixed with a second locking block on their inner side. The two fixing seats are fitted together with the second locking blocks fixed on the same inner side. The adapter is provided with a second locking groove on both sides. The two fitted second locking blocks are engaged with the second locking groove at the same time.

9. The automobile failure detection device according to claim 6, characterized by Both of the two fixing seats have anti-slip protrusions fixed on both sides, and the anti-slip protrusions are engaged with the anti-slip grooves.

10. The automobile failure detection device according to claim 8, characterized by The cross-sections of the slots of the first slot, the anti-slip groove, the connecting groove, and the second slot all taper from the inside out.

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