Vehicle post-processing anti-theft structure and anti-disassembly fastener

Abstract

The utility model discloses a vehicle post-processing anti-theft structure and an anti-disassembly fastener. The vehicle post-processing anti-theft structure comprises a vehicle frame, a mounting bracket and a post-processing device, wherein the post-processing device is connected to the mounting bracket, the mounting bracket is connected to the frame through at least one anti-disassembly fastener, the anti-disassembly fastener comprises an anti-disassembly bolt and an anti-disassembly nut, the anti-disassembly bolt comprises a bolt head and a screw rod part connected with the bolt head, and the screw rod part is connected with the anti-disassembly nut. A plurality of first boss parts which are evenly distributed in the circumferential direction are arranged on the bolt head part, a first groove part which is concave inwards in the radial direction is arranged between every two adjacent first boss parts, and a plurality of second boss parts which are evenly distributed in the circumferential direction are arranged on the periphery of the anti-disassembly nut. The post-processing device can not be disassembled by using an existing wrench, so that the difficulty of disassembling the post-processing device by a thief can be increased, the thief is forced to give up a theft behavior, and an anti-theft effect can be achieved.

Description

Technical Field

[0001] The utility model relates to a vehicle post-processing anti-theft structure and an anti-dismantling fastener. Background Art

[0002] At present, with the implementation of the National VI emission regulations, the requirements for the purification of automobile exhaust pollutants are getting higher and higher. In order to ensure the full purification of automobile exhaust, a variety of precious metals need to be added to the post-processing device as catalysts, which leads to an increase in the cost of the post-processing device, and therefore the theft of the post-processing device has increased. The existing post-processing device still uses ordinary hexagonal bolts for installation and connection. Since hexagonal bolts are very common, thieves can easily disassemble the post-processing device using existing wrenches and other tools, making the post-processing device vulnerable to theft, which in turn causes significant economic losses to the car owner.

[0003] In addition, some companies will add separate alarm sensors to monitor the post-processing device. If the post-processing device is stolen, the alarm sensor will sound an alarm. However, adding alarm sensors alone will increase the cost of the entire vehicle and the cost of corresponding repairs and maintenance. In addition, the separately added alarm sensors also require additional layout space. Since the layout space in the vehicle is very compact, most vehicles cannot meet the layout space requirements of alarm sensors. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a vehicle post-processing anti-theft structure, which cannot be disassembled using an existing wrench, can increase the difficulty for thieves to disassemble the post-processing device, thereby forcing thieves to give up theft and play an anti-theft role.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a vehicle post-processing anti-theft structure, which includes a frame, a mounting bracket and a post-processing device;

[0006] The post-processing device is connected to the mounting bracket;

[0007] The mounting bracket is connected to the frame by at least one tamper-proof fastener;

[0008] Wherein, the anti-disassembly fastener comprises an anti-disassembly bolt and an anti-disassembly nut, and the anti-disassembly bolt and the anti-disassembly nut are cooperatively connected to fasten the mounting bracket to the vehicle frame;

[0009] The anti-disassembly bolt comprises a bolt head and a screw portion connected to the bolt head, the bolt head is provided with a plurality of first boss portions uniformly distributed along the circumferential direction, and a first groove portion recessed radially inward is provided between adjacent first boss portions;

[0010] A plurality of second bosses evenly distributed in the circumferential direction are arranged on the outer periphery of the anti-disassembly nut, and second grooves recessed radially inward are arranged between adjacent second bosses. A threaded hole for cooperating with the screw portion is also arranged at the center of the anti-disassembly nut.

[0011] A specific structure of the anti-dismantling bolt is further provided, wherein the anti-dismantling bolt is further provided with a first flange portion located between the bolt head and the screw rod portion.

[0012] Furthermore, the bolt head, the first flange portion and the screw portion are integrally formed.

[0013] A specific structure of the anti-disassembly nut is further provided, wherein a second flange portion is provided at one end of the anti-disassembly nut.

[0014] Furthermore, the second flange portion and the anti-disassembly nut are formed integrally.

[0015] Furthermore, the vehicle post-processing anti-theft structure also includes a heat insulation cover, which is connected to the mounting bracket and surrounds the outside of the post-processing device.

[0016] A specific connection method of the heat insulation cover is further provided, wherein the heat insulation cover and the mounting bracket are also connected via at least one anti-disassembly fastener.

[0017] Furthermore, there are four first boss portions in the bolt head evenly distributed in the circumferential direction, and there are four second boss portions in the anti-disassembly nut evenly distributed in the circumferential direction.

[0018] Further, the vehicle post-processing anti-theft structure also includes a controller and an alarm component;

[0019] The post-processing device is provided with a plurality of temperature sensors;

[0020] The temperature sensor is connected to the controller signal, the controller is connected to the alarm component, and the controller is used to control the alarm component to issue an alarm when the signal of the temperature sensor is disconnected.

[0021] The utility model also provides an anti-disassembly fastener, which comprises the anti-disassembly bolt and the anti-disassembly nut as described above.

[0022] After adopting the above technical solution, the anti-dismantling bolt passes through the mounting bracket and the frame and is connected to the anti-dismantling nut, thereby fastening the mounting bracket to the frame. The tightening torque of the anti-dismantling bolt and the anti-dismantling nut is 210N·m. The existing wrench is not compatible with the bolt head on the anti-dismantling bolt. The contact surface formed between the existing wrench and the first boss on the bolt head is small, and effective surface contact cannot be formed. Therefore, the torque that can be transmitted is small, and the anti-dismantling bolt cannot be screwed. Similarly, the existing wrench is not compatible with the anti-dismantling nut. The contact surface formed between the existing wrench and the second boss on the anti-dismantling nut is also small, and effective surface contact cannot be formed. Therefore, a large torque cannot be transmitted, and the anti-dismantling nut cannot be screwed. Therefore, the anti-dismantling bolts and the anti-dismantling nuts cannot be removed by using existing wrenches, and thieves cannot remove the anti-dismantling bolts and the anti-dismantling nuts in the anti-dismantling fasteners by using existing wrenches, so the post-processing device and the mounting bracket cannot be removed from the vehicle frame, thereby increasing the difficulty for thieves to steal the post-processing device. Since thieves are in an extremely nervous state during the theft process, when disassembly encounters difficulties, they are forced to give up the theft behavior, thereby playing an anti-theft role and avoiding major economic losses to the vehicle owner. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of the vehicle post-processing anti-theft structure of the utility model;

[0024] Figure 2 It is a top view of the vehicle post-processing anti-theft structure of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the vehicle post-processing anti-theft structure of the utility model;

[0026] Figure 4 It is a schematic diagram of the structure of the anti-disassembly fastener of the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the anti-dismantling bolt of the utility model;

[0028] Figure 6 It is a top view of the anti-disassembly bolt of the utility model;

[0029] Figure 7 It is a structural schematic diagram of the anti-dismantling nut of the utility model. DETAILED DESCRIPTION

[0030] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0031] Embodiment 1

[0032] like Figures 1 to 7 As shown, a vehicle post-processing anti-theft structure includes a vehicle frame 1, a mounting bracket 2 and a post-processing device 3;

[0033] The post-processing device 3 is connected to the mounting bracket 2;

[0034] The mounting bracket 2 is connected to the vehicle frame 1 via at least one anti-disassembly fastener 4;

[0035] The anti-disassembly fastener 4 includes an anti-disassembly bolt 5 and an anti-disassembly nut 6, and the anti-disassembly bolt 5 and the anti-disassembly nut 6 are connected in cooperation to fasten the mounting bracket 2 to the vehicle frame 1;

[0036] The anti-disassembly bolt 5 includes a bolt head 7 and a screw portion 8 connected to the bolt head 7. The bolt head 7 is provided with a plurality of first boss portions 9 uniformly distributed along the circumferential direction, and a first groove portion 10 recessed radially inward is provided between adjacent first boss portions 9.

[0037] The outer periphery of the anti-disassembly nut 6 is provided with a plurality of second bosses 11 uniformly distributed in the circumferential direction, and a second groove 12 recessed radially inward is provided between adjacent second bosses 11. The center of the anti-disassembly nut 6 is also provided with a threaded hole 13 for mating with the screw portion 8. Specifically, the anti-disassembly bolt 5 passes through the mounting bracket 2 and the frame 1 and is connected with the anti-disassembly nut 6, thereby fastening the mounting bracket 2 to the frame 1. The tightening torque of the anti-disassembly bolt 5 and the anti-disassembly nut 6 is 210N·m. More specifically, the existing wrench is not compatible with the bolt head 7 on the anti-disassembly bolt 5. The contact surface formed between the existing wrench and the first boss 9 on the bolt head 7 is small, and an effective surface contact cannot be formed. Therefore, the torque that can be transmitted is small, and therefore the anti-disassembly bolt 5 cannot be screwed. Similarly, the existing wrench is not compatible with the anti-disassembly nut 6. The contact surface formed between the existing wrench and the second boss portion 11 on the anti-disassembly nut 6 is also small, and it is impossible to form an effective surface contact, so it is impossible to transmit a large torque, and therefore it is impossible to twist the anti-disassembly nut 6. Therefore, the anti-disassembly bolt 5 and the anti-disassembly nut 6 cannot be removed using the existing wrench. The thief cannot remove the anti-disassembly bolt 5 and the anti-disassembly nut 6 in the anti-disassembly fastener 4 using the existing wrench, so it is impossible to remove the post-processing device 3 and the mounting bracket 2 from the vehicle frame 1, which increases the difficulty for the thief to steal the post-processing device 3. Since the thief is in an extremely nervous state during the theft process, when the disassembly encounters difficulties, it will force the thief to give up the theft behavior, which plays a role in preventing theft and avoiding major economic losses to the car owner.

[0038] There is no special disassembly tool matching the anti-disassembly bolt 5 and anti-disassembly nut 6 in the market, so the anti-theft feature is enhanced. For dealers, the manufacturer can provide a special disassembly tool matching the anti-disassembly bolt 5 and anti-disassembly nut 6, and the special disassembly tool is provided with a sleeve hole matching the outer contour of the bolt head 7.

[0039] like Figures 4 to 7 As shown, the anti-disassembly bolt 5 is also provided with a first flange portion 14 located between the bolt head 7 and the screw portion 8, and the bolt head 7, the first flange portion 14 and the screw portion 8 are integrally formed. A second flange portion 15 is provided at one end of the anti-disassembly nut 6, and the second flange portion 15 is integrally formed with the anti-disassembly nut 6; in this embodiment, the screw portion 8 in the anti-disassembly bolt 5 passes through the mounting bracket 2 and the frame 1 and is connected to the threaded hole 13 in the anti-disassembly nut 6, thereby fastening the mounting bracket 2 to the frame 1. Among them, the first flange portion 14 is against the mounting bracket 2, and the second flange portion 15 is against the frame 1. The provision of the first flange portion 14 can increase the contact force area between the anti-disassembly bolt 5 and the mounting bracket 2, and the provision of the second flange portion 15 can increase the contact force area between the anti-disassembly nut 6 and the frame 1, thereby improving the strength and reliability of the connection.

[0040] Specifically, some anti-theft bolts in the prior art have insufficient structural strength, while the anti-disassembly bolt 5 in the embodiment of the present application has high overall strength, can meet the tightening torque requirements, and will not cause the problem of tightening breakage.

[0041] like Figures 1 to 3 As shown, the vehicle post-processing anti-theft structure may further include a heat insulation cover 16, which is connected to the mounting bracket 2 and surrounds the outer side of the post-processing device 3; specifically, the heat insulation cover 16 and the mounting bracket 2 are also connected by at least one anti-dismantling fastener 4, and is shielded and protected by the heat insulation cover 16. A thief needs to first remove the anti-dismantling fastener 4 between the heat insulation cover 16 and the mounting bracket 2 to remove the heat insulation cover 16, and then remove the anti-dismantling fastener 4 between the mounting bracket 2 and the vehicle frame 1, thereby further increasing the difficulty of theft, making it impossible for the thief to complete the disassembly in a short time, and forcing the thief to give up the theft.

[0042] In this embodiment, there are four first boss portions 9 evenly distributed in the circumferential direction in the bolt head 7 , and there are four second boss portions 11 evenly distributed in the circumferential direction in the anti-disassembly nut 6 .

[0043] Specifically, the vehicle post-processing anti-theft structure also includes a controller and an alarm component;

[0044] The post-processing device 3 is provided with a plurality of temperature sensors;

[0045] The temperature sensor is connected to the controller signal, the controller is connected to the alarm component, and the controller is used to control the alarm component to sound an alarm when the signal of the temperature sensor is disconnected; specifically, the post-processing device 3 is originally provided with multiple temperature sensors for monitoring the post-processing reaction temperature, and the multiple temperature sensors are respectively used to measure the temperature before DOC to ensure the regeneration function, measure the temperature before DPF to ensure the smooth regeneration of DPF, measure the temperature before SCR to ensure the SCR conversion efficiency, and measure the temperature after SCR to cooperate with the PM sensor to calculate the carbon load. More specifically, when the post-processing device 3 is stolen, the signals of each temperature sensor on the post-processing device 3 will be cut off, and then the alarm can be realized by monitoring the signal of the temperature sensor, which on the one hand improves the protection and anti-theft measures of the post-processing device 3, making it difficult for thieves to steal; on the other hand, the alarm is realized by monitoring the signal of the temperature sensor, and the temperature sensor is originally in the post-processing device 3, so there is no need to add a separate alarm sensor, so the cost of the whole vehicle can be reduced, and the corresponding maintenance cost can also be reduced, and there is no need to reserve additional layout space for the alarm sensor, which will not affect the original layout form in the vehicle.

[0046] In this embodiment, the controller will control the alarm component to sound an alarm only when the signals of more than two temperature sensors are cut off. The purpose of this design is to prevent false alarms caused by occasional failure of a single temperature sensor. The alarm component may be an audible and visual alarm or a buzzer, and the controller may be an ECU controller.

[0047] Embodiment 2

[0048] like Figures 4 to 7 As shown, an anti-dismantling fastener comprises an anti-dismantling bolt 5 and an anti-dismantling nut 6 as described in the first embodiment.

[0049] In summary, the anti-dismantling bolt 5 passes through the mounting bracket 2 and the frame 1 and is connected to the anti-dismantling nut 6, thereby fastening the mounting bracket 2 to the frame 1. The tightening torque of the anti-dismantling bolt 5 and the anti-dismantling nut 6 is 210 N·m. The existing wrench is not compatible with the bolt head 7 on the anti-dismantling bolt 5. The contact surface formed between the existing wrench and the first boss portion 9 on the bolt head 7 is small, and an effective surface contact cannot be formed. Therefore, the torque that can be transmitted is small, and the anti-dismantling bolt 5 cannot be screwed. Similarly, the existing wrench is not compatible with the anti-dismantling nut 6. The contact surface formed between the existing wrench and the second boss portion 11 on the anti-dismantling nut 6 is also small, and an effective surface contact cannot be formed. Therefore, a large torque cannot be transmitted, and the anti-dismantling nut 6 cannot be screwed. Therefore, the anti-dismantling bolt 5 and the anti-dismantling nut 6 cannot be removed by using an existing wrench. A thief cannot remove the anti-dismantling bolt 5 and the anti-dismantling nut 6 in the anti-dismantling fastener 4 by using an existing wrench, and thus cannot remove the post-processing device 3 and the mounting bracket 2 from the vehicle frame 1, thereby increasing the difficulty for the thief to steal the post-processing device 3. Since the thief is in an extremely nervous state during the theft process, when the disassembly encounters difficulties, the thief is forced to give up the theft behavior, thereby playing an anti-theft role and avoiding major economic losses to the vehicle owner.

[0050] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle post-processing anti-theft structure, characterized in that: It comprises a vehicle frame (1), a mounting bracket (2) and a post-processing device (3); The post-processing device (3) is connected to the mounting bracket (2); The mounting bracket (2) is connected to the vehicle frame (1) via at least one anti-disassembly fastener (4); The anti-disassembly fastener (4) comprises an anti-disassembly bolt (5) and an anti-disassembly nut (6), and the anti-disassembly bolt (5) and the anti-disassembly nut (6) are matched and connected to fasten the mounting bracket (2) to the vehicle frame (1); The anti-disassembly bolt (5) comprises a bolt head (7) and a screw rod (8) connected to the bolt head (7); the bolt head (7) is provided with a plurality of first bosses (9) uniformly distributed along the circumferential direction; and first grooves (10) recessed radially inwardly are provided between adjacent first bosses (9); The outer periphery of the anti-disassembly nut (6) is provided with a plurality of second boss portions (11) uniformly distributed in the circumferential direction, and a second groove portion (12) recessed radially inward is provided between adjacent second boss portions (11). The center of the anti-disassembly nut (6) is also provided with a threaded hole (13) for cooperating with the screw portion (8).

2. The vehicle post-processing anti-theft structure according to claim 1, characterized in that: The anti-disassembly bolt (5) is also provided with a first flange portion (14) located between the bolt head (7) and the screw rod portion (8).

3. The vehicle post-processing anti-theft structure according to claim 2, characterized in that: The bolt head (7), the first flange portion (14) and the screw portion (8) are integrally formed.

4. The vehicle post-processing anti-theft structure according to claim 1, characterized in that: A second flange portion (15) is provided at one end of the anti-disassembly nut (6).

5. The vehicle post-processing anti-theft structure according to claim 4, characterized in that: The second flange portion (15) and the anti-disassembly nut (6) are integrally formed.

6. The vehicle post-processing anti-theft structure according to claim 1, characterized in that: It also comprises a heat insulation cover (16), which is connected to the mounting bracket (2) and is arranged around the outside of the post-processing device (3).

7. The vehicle post-processing anti-theft structure according to claim 6, characterized in that: The heat insulation cover (16) and the mounting bracket (2) are also connected via at least one anti-disassembly fastener (4).

8. The vehicle post-processing anti-theft structure according to claim 1, characterized in that: There are four first boss portions (9) evenly distributed in the circumferential direction in the bolt head (7), and there are four second boss portions (11) evenly distributed in the circumferential direction in the anti-disassembly nut (6).

9. The vehicle post-processing anti-theft structure according to claim 1, characterized in that: Also includes controller and alarm components; The post-processing device (3) is provided with a plurality of temperature sensors; The temperature sensor is connected to the controller signal, the controller is connected to the alarm component, and the controller is used to control the alarm component to issue an alarm when the signal of the temperature sensor is disconnected.

10. A tamper-proof fastener, characterized in that: It comprises an anti-disassembly bolt (5) and an anti-disassembly nut (6) in a vehicle post-processing anti-theft structure as claimed in any one of claims 1 to 9.

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