A double-motor and screw rod brake assembly of an automatic driving intelligent brake mechanism

Abstract

The utility model relates to brake mechanism technical field, and disclose a kind of double motor and screw brake assembly of automatic driving intelligent brake mechanism, solve the problem that current automatic driving intelligent brake mechanism usually adopts single motor and screw structure braking, braking function completely fails when single motor fails, lack of redundancy design, it includes installation shell, the middle part of installation shell is fixedly installed with two sleeves, transmission shaft is inserted between the inside of two sleeves, brake disc is fixedly installed in the one end of transmission shaft, the upper portion and lower portion of brake disc two sides are respectively provided with outer brake pad and inner brake pad, and upper protective cover and lower protective cover are respectively fixedly installed in the top and bottom of installation shell;The utility model discloses automatic driving intelligent brake mechanism adopts double motor and double screw structure to brake, to improve braking effect, while another motor can normally brake operation when single motor fails, to ensure driving safety.

Description

Technical Field

[0001] This utility model belongs to the field of braking mechanism technology, specifically a dual-motor and lead screw braking assembly for an autonomous driving intelligent braking mechanism. Background Technology

[0002] The intelligent braking mechanism for autonomous driving is an active safety system that integrates sensor, algorithm, and electronic control technologies. By monitoring the road conditions ahead of the vehicle in real time, it automatically assesses potential collision risks and autonomously performs braking operations to avoid or mitigate accidents if the driver fails to react in time. With a millisecond-level response speed, the system constructs an environmental model through multiple sensors (such as radar and cameras) and calculates collision risks using complex algorithms. When the risk reaches a threshold, it first issues an audible and visual alarm to remind the driver. If the danger is not eliminated, it actively controls the braking force to decelerate or stop the vehicle. Its applications cover passenger cars, commercial vehicles, and special vehicles, significantly improving driving safety, especially in urban congestion, high-speed long-distance monitoring, and complex weather scenarios, providing key safety guarantees for the implementation of autonomous driving technology. Existing intelligent braking mechanisms for autonomous driving typically employ a single motor and lead screw structure for braking. When the single motor fails, the braking function is completely lost, lacking redundancy design. Furthermore, the single motor and lead screw structure may experience braking response delays or failures due to overload under extreme operating conditions, affecting driving safety. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a dual-motor and lead screw braking assembly for an autonomous driving intelligent braking mechanism, which effectively solves the problem that the existing autonomous driving intelligent braking mechanism usually adopts a single motor and lead screw structure for braking, and the braking function completely fails when the single motor fails, lacking redundancy design.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dual-motor and lead screw braking assembly for an autonomous driving intelligent braking mechanism, comprising a mounting shell, two sleeves fixedly mounted in the middle of the mounting shell, a transmission shaft inserted between the interiors of the two sleeves, a brake disc fixedly mounted at one end of the transmission shaft, an outer brake pad and an inner brake pad respectively provided on the upper and lower parts of both sides of the brake disc, an upper protective cover and a lower protective cover fixedly mounted on the top and bottom of the mounting shell respectively, and an upper servo motor and a lower servo motor fixedly mounted inside the upper and lower protective covers respectively; The output ends of the upper and lower servo motors are equipped with transmission components. The transmission components are connected to two outer brake pads and two inner brake pads. When the upper and lower servo motors are running, the power is output to the two outer brake pads and two inner brake pads through the transmission components, so that the two outer brake pads and two inner brake pads move to friction brake with the brake disc.

[0005] Preferably, the transmission assembly includes two active bevel gears that are respectively fixedly installed at the output ends of the upper servo motor and the lower servo motor. The upper part and the lower part of the housing are provided with mounting grooves. One side of the surface of each of the two active bevel gears is meshed with a driven bevel gear, and one side of each of the two driven bevel gears is rotatably mounted with a fixed seat through a shaft seat. The two fixed seats are respectively fixedly installed at one end inside the two mounting grooves.

[0006] Preferably, a lead screw is fixedly installed on the other side of each driven bevel gear, and a threaded sleeve is threaded onto the surface of the lead screw. One end of each of the two threaded sleeves extends to the outside of the mounting housing and is fixedly connected to two inner brake pads. Slider blocks are fixedly installed on the upper and lower sides of each of the two threaded sleeves, and sliding grooves are opened on the inner walls of the upper and lower sides of the two mounting grooves. The four sliders are slidably installed inside the four sliding grooves respectively.

[0007] Preferably, a connecting seat is fixedly installed on all four sides of the mounting shell, a sliding sleeve is fixedly installed on one end of each connecting seat, a sliding rod is inserted inside each sliding sleeve, a positioning frame is fixedly installed between the two ends of each of the four sliding rods, a spring is sleeved on the surface of each of the four sliding rods, and the two ends of each of the four springs are fixedly connected to the sliding sleeve and the positioning frame respectively. One end of each of the upper and lower sides of the mounting shell is fixedly connected to two outer brake pads through a support arm.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, the operator controls the upper servo motor and the lower servo motor to run synchronously, so that the upper servo motor and the lower servo motor drive the two driven bevel gears to rotate through the two active bevel gears. When the two driven bevel gears rotate, they drive the two screw sleeves to move outward synchronously through the two lead screws. When the two screw sleeves move, they drive the slider to slide inside the slide groove, which increases the stability of the movement of the two screw sleeves. When the two screw sleeves move outward, they drive the two inner brake pads to press against one side surface of the brake disc. While the two inner brake pads press against one side of the brake disc, the reaction force pushes the mounting shell to move away from the brake disc. As the mounting shell moves, it drives the four sliding sleeves to slide on the surfaces of the four sliding rods through the four connecting seats, and simultaneously compresses the four springs. This ensures the stability of the mounting shell's movement while giving it the ability to elastically return to its original position. When the mounting shell moves away from the brake disc, it drives the two outer brake pads to press against the other side of the brake disc through the two support arms, thereby achieving effective braking of the brake disc. This allows the autonomous driving intelligent braking mechanism to use a dual-motor and dual-screw structure for braking, improving the braking effect. At the same time, in the event of a single motor failure, the other motor can still perform braking operations normally to ensure driving safety. Attached Figure Description

[0009] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0010] In the attached diagram: Figure 1 This is a schematic diagram of the dual-motor and lead screw braking assembly of the intelligent braking mechanism for autonomous driving of this utility model. Figure 2 This is a schematic diagram of the upper and lower protective covers of this utility model; Figure 3 This is a schematic diagram of the internal structure of the mounting shell of this utility model; Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle; In the diagram: 1. Mounting housing; 2. Sleeve; 3. Drive shaft; 4. Brake disc; 5. Outer brake pad; 6. Inner brake pad; 7. Lower protective cover; 8. Upper protective cover; 9. Lower servo motor; 10. Upper servo motor; 11. Driving bevel gear; 12. Driven bevel gear; 13. Shaft seat; 14. Fixed seat; 15. Mounting groove; 16. Lead screw; 17. Lead sleeve; 18. Slider; 19. Slide groove; 20. Connecting seat; 21. Sliding sleeve; 22. Sliding rod; 23. Positioning frame; 24. Spring; 25. Support arm. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0012] Depend on Figures 1 to 4The present invention includes a hollow mounting shell 1. Two sleeves 2 are fixedly installed in the middle of the mounting shell 1. A transmission shaft 3 is inserted between the two sleeves 2, allowing the mounting shell 1 to move along the transmission shaft 3 without affecting the rotation of the transmission shaft 3. A brake disc 4 is fixedly installed at one end of the transmission shaft 3, and the surface of the brake disc 4 is provided with several ventilation holes to release the heat generated by friction. The upper and lower parts of both sides of the brake disc 4 are respectively provided with outer brake pads 5 and inner brake pads 6. When the two outer brake pads 5 and the two inner brake pads 6 are in close contact with the brake disc 4, braking is achieved through friction. An upper protective cover 8 and a lower protective cover 7 are fixedly installed at the top and bottom of the mounting shell 1, respectively. An upper servo motor 10 and a lower servo motor 9 that output rotational power are fixedly installed inside the upper protective cover 8 and the lower protective cover 7, respectively. The upper protective cover 8 and the lower protective cover 7 can effectively protect the upper servo motor 10 and the lower servo motor 9 from external intrusion. The output ends of the upper servo motor 10 and the lower servo motor 9 are equipped with transmission components. The transmission components are connected to the two outer brake pads 5 and the two inner brake pads 6. When the upper servo motor 10 and the lower servo motor 9 are running, the power is output to the two outer brake pads 5 and the two inner brake pads 6 through the transmission components, so that the two outer brake pads 5 and the two inner brake pads 6 move to friction brake with the brake disc 4.

[0013] In use, the operator controls the upper servo motor 10 and the lower servo motor 9 to operate synchronously. The upper servo motor 10 and the lower servo motor 9 drive the two inner brake pads 6 to press against one side of the brake disc 4 through the transmission assembly, while simultaneously driving the two outer brake pads 5 to press against the other side of the brake disc 4, thereby achieving effective braking of the brake disc 4. This allows the automatic driving intelligent braking mechanism to use a dual-motor and dual-screw 16 structure for braking, thereby improving the braking effect. At the same time, in the event of a single motor failure, the other motor can still perform braking operations normally to ensure driving safety.

[0014] The transmission assembly includes two active bevel gears 11, which are respectively fixedly mounted on the output ends of the upper servo motor 10 and the lower servo motor 9. Mounting slots 15 are provided in the upper and lower parts of the mounting housing 1. These slots 15 are used to mount the transmission components, and the two active bevel gears 11 are located inside the two mounting slots 15. Driven bevel gears 12 are meshed with one side of each of the surfaces of the two active bevel gears 11. The engagement of the two active bevel gears 11 and the two driven bevel gears 12 can change the direction of rotational transmission. A fixed seat 14 is rotatably mounted on one side of each of the two driven bevel gears 12 via a bearing 13. The two fixed seats 14 are respectively fixedly mounted at one end inside the two mounting slots 15. The arrangement of the two bearings 13 ensures the stability of the rotation of the two driven bevel gears 12.

[0015] The operator controls the upper servo motor 10 and the lower servo motor 9 to operate synchronously, so that the upper servo motor 10 and the lower servo motor 9 drive the two driven bevel gears 12 to rotate through the two active bevel gears 11.

[0016] On the other side of the driven bevel gear 12, a lead screw 16 is fixedly installed. The surface of the lead screw 16 is threaded with a sleeve 17. Rotation of the lead screw 16 can drive the sleeve 17 to move on its surface. One end of each sleeve 17 extends to the outside of the mounting shell 1 and is fixedly connected to the two inner brake pads 6, so that the two sleeves 17 can drive the two inner brake pads 6 to move. Slider 18 is fixedly installed on the upper and lower sides of the two sleeves 17. The inner walls of the upper and lower sides of the two mounting grooves 15 are provided with sliding grooves 19. The four sliders 18 are slidably installed in the four sliding grooves 19 respectively, so that the four sliders 18 can move in the four sliding grooves 19 to limit the stability of the movement of the two sleeves 17.

[0017] When the two driven bevel gears 12 rotate, they drive the two threaded sleeves 17 to move outward synchronously through the two lead screws 16. When the two threaded sleeves 17 move, they drive the slider 18 to slide inside the slide groove 19, which increases the stability of the movement of the two threaded sleeves 17. When the two threaded sleeves 17 move outward, they drive the two inner brake pads 6 to press against one side surface of the brake disc 4.

[0018] Connecting seats 20 are fixedly installed on all four sides of the mounting shell 1. A sliding sleeve 21 is fixedly installed on one end of each connecting seat 20. A sliding rod 22 is inserted inside each sliding sleeve 21. The four sliding sleeves 21 can move along the surface of the four sliding rods 22 to limit the movement trajectory of the mounting shell 1. A positioning frame 23 is fixedly installed between the two ends of each of the four sliding rods 22. The four positioning frames 23 are used to fix and connect to the vehicle chassis to ensure the stability of the installation of the four sliding rods 22. A spring 24 is sleeved on the surface of each of the four sliding rods 22. The two ends of each of the four springs 24 are fixedly connected to the sliding sleeve 21 and the positioning frame 23 respectively. The four springs 24 can release elastic potential energy to push the mounting shell 1 to move and reset. One end of the upper and lower sides of the mounting shell 1 is fixedly connected to two outer brake pads 5 through support arms 25 so that the two outer brake pads 5 can move with the mounting shell 1.

[0019] While the two inner brake pads 6 are pressed against one side of the brake disc 4, the reaction force pushes the mounting shell 1 to move away from the brake disc 4. When the mounting shell 1 moves, it drives the four sliding sleeves 21 to slide on the surface of the four sliding rods 22 through the four connecting seats 20, and simultaneously squeezes the four springs 24, thereby ensuring the stability of the movement of the mounting shell 1 while giving it the ability to elastically return to its original position. When the mounting shell 1 moves away from the brake disc 4, it drives the two outer brake pads 5 to press against the other side of the brake disc 4 through the two support arms 28, thereby achieving effective braking of the brake disc 4.

Claims

1. A dual-motor and lead screw braking assembly for an automated driving intelligent braking mechanism, comprising a mounting housing (1), characterized in that: Two sleeves (2) are fixedly installed in the middle of the mounting shell (1). A drive shaft (3) is inserted between the two sleeves (2). A brake disc (4) is fixedly installed at one end of the drive shaft (3). An outer brake pad (5) and an inner brake pad (6) are respectively provided on the upper and lower parts of both sides of the brake disc (4). An upper protective cover (8) and a lower protective cover (7) are fixedly installed on the top and bottom of the mounting shell (1). An upper servo motor (10) and a lower servo motor (9) are fixedly installed inside the upper protective cover (8) and the lower protective cover (7). The output ends of the upper servo motor (10) and the lower servo motor (9) are equipped with transmission components. The transmission components are connected to the two outer brake pads (5) and the two inner brake pads (6). When the upper servo motor (10) and the lower servo motor (9) are running, the power is output to the two outer brake pads (5) and the two inner brake pads (6) through the transmission components, so that the two outer brake pads (5) and the two inner brake pads (6) move to friction braking with the brake disc (4).

2. The dual-motor and lead screw braking assembly of an autonomous driving intelligent braking mechanism according to claim 1, characterized in that: The transmission assembly includes two active bevel gears (11) that are fixedly installed at the output ends of the upper servo motor (10) and the lower servo motor (9), respectively. The upper part and the lower part of the housing (1) are provided with mounting grooves (15). One side of the surface of the two active bevel gears (11) is meshed with a driven bevel gear (12), and one side of the two driven bevel gears (12) is rotatably mounted with a fixed seat (14) through a shaft seat (13). The two fixed seats (14) are fixedly installed at one end inside the two mounting grooves (15), respectively.

3. The dual-motor and lead screw braking assembly of an autonomous driving intelligent braking mechanism according to claim 2, characterized in that: On the other side of the driven bevel gear (12), a lead screw (16) is fixedly installed. The surface of the lead screw (16) is threaded with a threaded sleeve (17). One end of each threaded sleeve (17) extends to the outside of the mounting shell (1) and is fixedly connected to the two inner brake pads (6).

4. The dual-motor and lead screw braking assembly of an autonomous driving intelligent braking mechanism according to claim 3, characterized in that: Slider (18) is fixedly installed on the upper and lower sides of the two thread sleeves (17), and sliding grooves (19) are opened on the upper and lower inner walls of the two mounting grooves (15). The four sliders (18) are slidably installed in the four sliding grooves (19).

5. The dual-motor and lead screw braking assembly of an automated driving intelligent braking mechanism according to claim 1, characterized in that: The mounting shell (1) is fixedly mounted with connecting seats (20) on all four sides. A sliding sleeve (21) is fixedly mounted on one end of each connecting seat (20). A sliding rod (22) is inserted inside each sliding sleeve (21). A positioning frame (23) is fixedly mounted between the two ends of each of the four sliding rods (22). A spring (24) is sleeved on the surface of each of the four sliding rods (22). The two ends of each of the four springs (24) are fixedly connected to the sliding sleeve (21) and the positioning frame (23) respectively. One end of the upper and lower sides of the mounting shell (1) is fixedly connected to two outer brake pads (5) through a support arm (25).

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