Vehicle brakes, chassis and vehicle

Abstract

The present disclosure provides a braking device of a vehicle, a vehicle chassis and a vehicle, and relates to the field of vehicle technology, and more specifically to the field of autonomous driving and driving testing. The braking device of the vehicle includes: a power assembly; a power transmission assembly connected to the output shaft of the power assembly; a translation assembly connected to the power transmission assembly, and the translation assembly is configured to translate under the transmission of the power transmission assembly; a power storage assembly connected to the translation assembly, and the power storage assembly is configured to store energy under the push of the translation assembly; and a brake assembly connected to the translation assembly and the wheel device of the vehicle, and is configured to be tightened or released under the drive of the translation assembly, wherein the power storage assembly is configured to release energy and push the translation assembly to translate when the vehicle is powered off, so that the brake assembly is tightened and drives the drum brake pads in the wheel device to apply force to the wheel.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, specifically to the field of autonomous driving and the field of driving testing, and more specifically to a vehicle braking device, a vehicle chassis and a vehicle. Background Art

[0002] With the development of electronic technology and network technology, autonomous driving technology has become one of the important development directions in the Internet and vehicle fields. Mature autonomous driving technology can free the driver's hands and reduce or even avoid traffic accidents to a certain extent. Before autonomous driving vehicles leave the factory, they usually need to undergo a lot of tests and experiments to ensure the reliability of autonomous driving technology. Summary of the invention

[0003] Provided are a vehicle brake device, a vehicle chassis, and a vehicle for improving vehicle safety.

[0004] One aspect of the present disclosure provides a braking device for a vehicle, comprising: a power assembly; a power transmission assembly connected to an output shaft of the power assembly; a translation assembly connected to the power transmission assembly, the translation assembly being configured to translate under the transmission of the power transmission assembly; a force storage assembly connected to the translation assembly, the force storage assembly being configured to store energy under the push of the translation assembly; and a brake assembly connected to the translation assembly and a wheel device of the vehicle, configured to be tightened or released under the drive of the translation assembly, wherein the force storage assembly is configured to release energy and push the translation assembly to translate when the vehicle is powered off, so that the brake assembly is tightened and drives the drum brake pads in the wheel device to apply force to the wheels.

[0005] Another aspect of the present disclosure provides a vehicle chassis, comprising: two steering wheel devices, each of the two steering wheel devices having a drum brake pad and a steering wheel; a first brake device connected to the two steering wheel devices; two driving wheel devices, each of the two driving wheel devices having a drum brake pad and a driving wheel; and a second brake device connected to the two driving wheel devices, wherein the first brake device and / or the second brake device are brake devices of the vehicle provided in the present disclosure.

[0006] Another aspect of the present disclosure provides a vehicle, which includes the vehicle chassis provided by the present disclosure.

[0007] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0009] Figure 1 is a schematic diagram of an application scenario of a vehicle brake device, a vehicle chassis, and a vehicle according to an embodiment of the present disclosure;

[0010] Figure 2 is a structural schematic diagram of a vehicle chassis according to an embodiment of the present disclosure;

[0011] Figure 3 is a schematic structural diagram of a driving wheel device or a steering wheel device according to an embodiment of the present disclosure;

[0012] Figure 4 is a structural block diagram of a braking device of a vehicle according to an embodiment of the present disclosure;

[0013] Figure 5 is a schematic structural diagram of a power transmission assembly in a brake device of a vehicle according to an embodiment of the present disclosure;

[0014] Figure 6 is a structural schematic diagram of a force storage component in a brake device of a vehicle according to an embodiment of the present disclosure;

[0015] Figure 7 is a structural schematic diagram of a force storage assembly in a vehicle brake device according to another embodiment of the present disclosure; and

[0016] Figure 8 It is a schematic diagram of the overall structure of a brake device for a vehicle according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0017] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0018] The present disclosure provides a braking device for a vehicle, comprising a power assembly, a power transmission assembly, a translation assembly, a force storage assembly and a brake assembly. The power transmission assembly is connected to the output shaft of the power assembly. The translation assembly is connected to the power transmission assembly, and the translation assembly is configured to translate under the transmission of the power transmission assembly. The force storage assembly is connected to the translation assembly, and the force storage assembly is configured to store energy under the push of the translation assembly. The brake assembly is connected to the translation assembly and the wheel device of the vehicle, and is configured to be tightened or released under the drive of the translation assembly. The force storage assembly is configured to release energy and push the translation assembly to translate when the vehicle is powered off, so that the brake assembly is released and drives the drum brake pads in the wheel device to apply force to the wheels.

[0019] The following will be combined Figure 1 The application scenarios of the method and device provided by the present disclosure are described.

[0020] Figure 1 It is a schematic diagram of an application scenario of a vehicle brake device, a vehicle chassis and a vehicle according to an embodiment of the present disclosure.

[0021] like Figure 1 As shown, the application scenario 100 includes a test target vehicle 110 and an autonomous driving vehicle 120 .

[0022] In the application scenario 100, the autonomous driving vehicle 120 may be a vehicle before leaving the factory, or a vehicle that needs maintenance after leaving the factory. When testing the autonomous driving vehicle 120, the test target vehicle 110 may be used to simulate a vehicle traveling on the road to test the obstacle avoidance and other functions of the autonomous driving vehicle 120.

[0023] For example, the test target vehicle 110 can be set on the road where the autonomous driving vehicle 120 is located to test whether the autonomous driving vehicle 120 can automatically change lanes when driving near the test target vehicle 110, or whether it can slow down, etc., to achieve autonomous driving safety testing, etc.

[0024] According to an embodiment of the present disclosure, the test target vehicle 110 can be, for example, a robot that automatically travels on the ground. Driven by a motor, the test target vehicle 110 can reach a specified speed. For example, the embodiment can pre-set a driving path for the test target vehicle 110 in the background, and the test target vehicle 110 can travel according to the driving path to simulate a vehicle in actual road conditions. Alternatively, the test target vehicle 110 can also be used in an object transportation scenario to transport a damaged target vehicle or any object that can be carried by the test target vehicle 110. For example, the test target vehicle 110 can also be used as an intelligent handling robot.

[0025] In one embodiment, the test target vehicle 110 may include, for example, a fuselage frame, a fuselage cover, a drive system, a brake system, a power system, and a control system. The drive system may be used to drive the test target vehicle 110 to travel and change the travel speed and travel direction. The drive system may include, for example, a power drive system and a steering drive system.

[0026] For example, the fuselage frame can be a chassis frame of a vehicle, and the setting of the chassis frame can control the vehicle height of the test target vehicle 110 within 20 cm. The fuselage frame can be provided with installation positions for various components included in other systems of the test target vehicle 110 in addition to the fuselage cover. For example, a steering wheel installation position, a drive wheel installation position, a motor installation position, a main electrical component installation position, a central controller installation position, a GPS antenna installation position, a battery installation position, etc. can be provided. The fuselage frame can also be provided with a plurality of wiring holes for passing communication cables, wires, etc. between the electronic components in each component. The chassis frame can be provided with reinforcing ribs to improve the pressure resistance of the test target vehicle and increase the service life of the test target vehicle.

[0027] For example, the fuselage cover plate can be detachably connected to the fuselage frame to cover the components installed in each installation position in the fuselage frame to prevent the components installed in each installation position from being exposed to wind and rain. The fuselage cover plate can be an integrally formed structure or can be composed of multiple cover plates spliced ​​together.

[0028] For example, the brake system may include brake lines, sensors, couplings, motors, etc. The brake system may provide resistance to the rotation of the drive wheel or the steering wheel under the action of the motor included therein, so as to hinder the rotation of the drive wheel or the steering wheel and achieve braking.

[0029] For example, the power supply system may include a battery module, a relay, a power supply module, etc., for providing electrical energy to the electronic devices in the test target vehicle 110. Under the action of the power supply system, the various electronic devices in the test target vehicle 110 can operate to realize the driving of the test target vehicle. Among them, the power supply module can be used to convert the voltage provided by the battery module to convert it into a voltage suitable for use by various electronic devices.

[0030] For example, the control system may include a communication module, a central controller, a motor driver, a rotary encoder, and a combined navigation device, etc. The control system may implement control of the test target vehicle 110 and trajectory customization, etc., through a control algorithm.

[0031] In one embodiment, the test target vehicle may include a brake device of the vehicle provided by the present disclosure, which is used to provide resistance to the rotation of the wheels of the test target vehicle. It is understandable that the brake device can be applied to provide resistance to the rotation of the drive wheel, and can also be applied to provide resistance to the rotation of the steering wheel. The brake device of the vehicle can be applied to any type of vehicle except the test target vehicle.

[0032] Accordingly, the present disclosure also provides a vehicle including the brake device of the vehicle, wherein the vehicle includes a vehicle chassis, and the brake device is integrated on the vehicle chassis. The brake device included in the vehicle may be one or more. For example, the vehicle chassis may be integrated with two brake devices of the vehicle provided by the present disclosure, which are respectively used to provide resistance to the rotation of the driving wheel and to provide resistance to the rotation of the steering wheel.

[0033] The following will be combined Figure 2-3 A vehicle chassis integrated with the vehicle brake device provided by the present disclosure is described in detail.

[0034] Figure 2 It is a schematic structural diagram of a vehicle chassis according to an embodiment of the present disclosure.

[0035] According to an embodiment of the present disclosure, a vehicle chassis may include a wheel device and a brake device, the wheel device includes a drum brake pad and a wheel, and the brake device is drivingly connected to the drum brake pad in the wheel device.

[0036] In one embodiment, if Figure 2 As shown, the vehicle chassis 200 may include two steering wheel devices, a first brake device 220, two driving wheel devices and a second brake device 240. Correspondingly, the aforementioned wheel device includes the two steering wheel devices and the two driving wheel devices, and the brake device may be two, namely the first brake device 220 and the second brake device 240. Among them, the two steering wheel devices are a steering wheel device 211 and a steering wheel device 212, and the two steering wheel devices are arranged in the area of ​​the vehicle chassis close to the front of the vehicle, and are respectively arranged on the left and right sides of the vehicle chassis close to the frame. Similarly, the two driving wheel devices are divided into a driving wheel device 231 and a driving wheel device 232, and the two driving wheel devices are arranged in the area of ​​the vehicle chassis close to the rear of the vehicle, and are respectively arranged on the left and right sides of the vehicle chassis close to the frame. The two driving wheel devices and the two steering wheel devices can be symmetrically arranged relative to the center point of the vehicle chassis.

[0037] Each of the two steering wheel devices may include a drum brake pad and a steering wheel, and the first brake device may be a brake device described later in the present disclosure, and the first brake device may drive the drum brake pad to rotate. In this way, the brake device may drive the drum brake pad to contact the inner surface of the tire in the steering wheel, thereby generating friction to prevent the steering wheel from rotating.

[0038] Each of the two driving wheel devices is similar to the steering wheel device and may include a drum brake pad and a driving wheel. The second brake device may adopt the brake device described later in this disclosure, and the second brake device may drive the drum brake pad to rotate. In this way, the brake device may drive the drum brake pad to contact the inner surface of the tire in the driving wheel, thereby generating friction to prevent the driving wheel from rotating.

[0039] It can be understood that the vehicle chassis may also include, for example, a chassis bracket, an electrical system, a power drive device and a steering drive device.

[0040] Among them, the chassis bracket 210 may include a rectangular inner cavity with an open top, and a plurality of mounting positions may be provided in the rectangular inner cavity for respectively installing a power drive device, a steering drive device, a brake device, an electrical system, a steering wheel device and a driving wheel device.

[0041] The power drive device is used to provide driving force for the rotation of the driving wheel device, and the steering drive device is used to provide steering force for the steering wheel device. The electrical system is used to provide electrical energy to various electronic devices in the vehicle chassis and control the operation of various electronic devices.

[0042] The following will be combined Figure 3 The structure of any one of the steering wheel device and the driving wheel device provided by the present disclosure is described in detail.

[0043] Figure 3 It is a schematic structural diagram of a driving wheel device or a steering wheel device according to an embodiment of the present disclosure.

[0044] like Figure 3 As shown, in this embodiment 300, any wheel device of the driving wheel device and the steering wheel device 310 may include a wheel 311, a wheel hub 312, two drum brake pads 3131, 3132, a rotating shaft 314, a fixed shaft 315 and a cable rod 316. In the driving wheel device, the wheel 311 is the driving wheel; in the steering wheel device, the wheel 311 is the steering wheel.

[0045] The drum brake pads 3131 and 3132 are arranged oppositely between the wheel 311 and the wheel hub 312. Specifically, the wheel hub 312 is sandwiched in the space surrounded by the drum brake pads 3131 and 3132, and the wheel 311 is sleeved on the outer periphery of the drum brake pads 3131 and 3132.

[0046] In one embodiment, the wheel 311 may include a tire, a rim, and spokes, and the portion of the hub 312 protruding from the two drum brake pads may be fixedly connected to the spokes, thereby driving the wheel 311 to rotate.

[0047] The rotating shaft 314 and the fixed shaft 315 are used to fix the two drum brake pads so that the two drum brake pads can be fixed together. Specifically, the rotating shaft 314 can be clamped between the first end of the drum brake pad 3131 and the first end of the drum brake pad 3132, and the first end of the drum brake pad 3131 and the first end of the drum brake pad 3132 are close to each other. The fixed shaft can be clamped between the second end of the drum brake pad 3131 and the second end of the drum brake pad 3132, and the second end of the drum brake pad 3131 and the second end of the drum brake pad 3132 are close to each other.

[0048] Among them, the cable rod 316 is fixedly connected to the rotating shaft 314 and is fixedly connected to the brake device of the vehicle. In this way, when the brake assembly in the brake device is tightened, the brake assembly can drive the cable rod 316 and the rotating shaft 314 to rotate. By rotating the rotating shaft 314, for example, a thrust can be generated on the two drum brake pads, so that the distance between the two first ends of the two drum brake pads increases, thereby increasing the friction between the two drum brake pads and the wheel. On the contrary, when the brake assembly is released, the cable rod 316 and the rotating shaft 314 are driven to rotate via the brake assembly, so that the distance between the two first ends of the two drum brake pads decreases, thereby reducing the friction between the two drum brake pads and the wheel 311.

[0049] In one embodiment, if Figure 3 As shown, the portion of the rotating shaft 314 sandwiched between the drum brake pad 3131 and the drum brake pad 3132 may have different sizes in different directions. When installing the rotating shaft 314 and the cable pull rod 316, the brake assembly in the released state may be fixedly connected to the cable pull rod 316, and the two faces of the rotating shaft 314 perpendicular to the direction with the smaller size may contact the two first ends respectively. In this way, when the brake line is tightened, the distance between the two first ends may be increased by driving the rotating shaft 314 to rotate.

[0050] The disclosed embodiment adopts the structure of the drum brake pad, the rotating shaft and the cable rod, and can realize wheel braking in a narrow space. In this way, the space required for the drive system with the braking function can be effectively reduced, which is conducive to promoting the miniaturization and flattening design of the test target vehicle.

[0051] The following will be combined Figures 4 to 8 The braking device of the vehicle provided by the present disclosure is described in detail.

[0052] Figure 4 4 is a structural block diagram of a braking device for a vehicle according to an embodiment of the present disclosure.

[0053] like Figure 4 As shown, the brake device 400 of this embodiment may include a power assembly 410 , a power transmission assembly 420 , a translation assembly 430 , a force storage assembly 440 and a brake assembly 450 .

[0054] The power assembly 410 may be, for example, a motor. The power transmission assembly 420 is connected to the output shaft of the power assembly 410, and may be specifically connected to the output shaft of the motor. The power transmission assembly 420 may be, for example, a component that converts the rotation of the output shaft of the motor into translation. For example, the power transmission assembly 420 may be a slider crank assembly, a rack and pinion assembly, a slider crank mechanism, etc., which is not limited in the present disclosure.

[0055] The translation assembly 430 is connected to the power transmission assembly 420 . The translation assembly 430 may be any mechanical component that can move under thrust, and the present disclosure does not limit this.

[0056] The force storage component 440 may be, for example, an elastic component that can be compressed under the action of a thrust and automatically recover to its original length after the thrust disappears. In this way, the force storage component stores energy under the push of the translation component.

[0057] The brake assembly 450 may include, for example, a brake line, which is connected to the translation assembly 430 and the wheel device 40 of the vehicle, and is tightened or released under the drive of the translation assembly 430. For example, one end of the brake line may be fixed to the translation assembly 430, and the other end of the brake line may be fixed to the driving wheel device or the steering wheel device described above. Specifically, the other end of the brake line is connected to the cable rod on the driving wheel device or the steering wheel device described above.

[0058] For example, when the translation assembly 430 moves in the first direction and compresses the power storage assembly 440, the brake line can be released. When the energy stored in the power storage assembly 440 is released, the translation assembly moves in the second direction, thereby tightening the brake line and driving the pull rod to rotate. In this way, the distance between the two drum brake pads described above can be increased, and the friction between the drum brake pads and the inner surface of the tire of the wheel device to which they belong is increased, providing resistance to the rotation of the drive wheel or the steering wheel.

[0059] For example, the power assembly can be controlled to balance the thrust provided by the power transmission assembly to the translation assembly with the force applied to the translation assembly by the energy storage assembly, so as to control the energy storage assembly to maintain the state of storing energy. In the case of a power outage in the vehicle, the thrust provided by the power transmission assembly to the translation assembly disappears due to the power outage of the power assembly, and the translation assembly can move in the second direction under the action of the force applied by the energy storage assembly, so that the brake line can be tightened. Therefore, through this embodiment, the energy storage assembly can release energy when the vehicle is powered off, so that the brake assembly is tightened and drives the drum brake pads to apply force to the wheels. Therefore, a vehicle provided with the brake device of this embodiment can automatically brake when the power is off, avoiding the safety hazard caused by the vehicle continuing to drive due to inertia when the power is off.

[0060] In summary, the braking device of the vehicle in the embodiment of the present disclosure can effectively improve the safety of vehicle driving through the provision of a force storage component, which is beneficial to speeding up the efficiency of putting vehicle autonomous driving into the market.

[0061] Figure 5 It is a schematic diagram of the structure of a power transmission component in a brake device of a vehicle according to an embodiment of the present disclosure.

[0062] In one embodiment, the power transmission assembly may include, for example, a screw nut device, one end of the screw may be connected to the output shaft of the power assembly. The nut cooperates with the screw. When the screw rotates under the drive of the power assembly, the nut may move on the screw. The translation assembly may be sleeved on the screw and located near the other end of the screw relative to the nut. In this way, when the nut moves toward the other end of the screw, the translation assembly may be pushed to move.

[0063] In one embodiment, the power transmission component can use a synchronous wheel and a transmission belt structure to transmit power, so that the translation component and the power storage component can be arranged on one side of the power component along the height direction, thereby reducing the horizontal size of the overall structure of the braking device, which is beneficial to the miniaturization design of the vehicle chassis and the vehicle.

[0064] like Figure 5 As shown, the power transmission assembly 520 of this embodiment may include two synchronous wheels 521 and 522 , a transmission belt 523 , a screw rod 524 , a nut 525 and a rotating block 526 .

[0065] Among them, one of the two synchronous wheels 521 can be connected to the output shaft of the power assembly, so as to rotate under the drive of the power assembly. The other synchronous wheel 522 is fixedly connected to one end of the screw rod 524, and the transmission belt 523 is sleeved on the synchronous wheel 521 and the synchronous wheel 522. In this way, when the synchronous wheel 521 rotates under the drive of the power assembly, the synchronous wheel 521 can drive the other synchronous wheel 522 to rotate via the transmission belt 523, so that the synchronous wheel 522 drives the screw rod 524 to rotate. In this way, the nut 525 on the screw rod 524 can move relative to the screw rod 524 in the length direction of the screw rod 524.

[0066] Among them, the other end of the screw rod 524 is fixedly connected to the rotating block 526. The aforementioned translation assembly and power storage assembly can be sequentially sleeved on the screw rod 524 in a direction away from the synchronous wheel 522. The nut 525 can be fixedly connected to the translation assembly by a connecting piece such as a screw. In this way, the rotating block 526 can limit the position of the power storage assembly. When the nut 525 moves toward the other end of the screw rod 524 in the length direction of the screw rod 524, it can push the translation assembly to move and compress the power storage assembly, so that the power storage assembly stores energy.

[0067] In one embodiment, if Figure 5 As shown, the power transmission assembly 520 may further include a fixing plate 527, and the synchronous wheels 521 and 522 may be fixed to the fixing plate 527 via connecting members such as screws. The fixing plate may be fixedly connected to a chassis bracket in a vehicle chassis, so that the translation assembly and the power storage assembly may be fixed to one side of the power assembly along the height direction.

[0068] In one embodiment, if Figure 5As shown, the power transmission assembly 520 may also include two tensioning wheels 528 and 529. The two tensioning wheels 528 and 529 may be fixed on the fixing plate 527 and arranged between the synchronous wheel 521 and the synchronous wheel 522 in the height direction. The tensioning wheels 528 and 529 are symmetrically arranged relative to the connecting line direction of the rotating shafts of the two synchronous wheels, and both press the transmission belt 523 so that the transmission belt 523 is pressed between the two tensioning wheels. By setting the two tensioning wheels, the transmission belt 523 can be kept in a tensioned state. Thereby, the loosening of the transmission belt 523 due to the long running time and the unstable braking effect can be avoided.

[0069] Figure 6 It is a schematic structural diagram of a force storage component in a brake device of a vehicle according to an embodiment of the present disclosure.

[0070] According to an embodiment of the present disclosure, an electromagnet can be provided in the force storage assembly, which generates magnetic force when powered on, and prevents the rotating block from rotating by suction, thereby limiting the position of the nut on the screw. In this way, the force storage assembly can maintain a state of storing energy without the need for the power assembly to provide power. When the power is off, the electromagnet loses its magnetic force, and the force storage assembly can release energy and push the translation assembly and the nut to move, so that the rotating block rotates, and the brake assembly connected to the translation assembly is tightened. Among them, the rotating block can, for example, have ferromagnetic material, so that when the electromagnet generates magnetic force, it stops rotating under the action of the suction force of the electromagnet. Accordingly, the force storage assembly can also include an elastic member, which is sleeved on the screw.

[0071] In addition, in order to better define the position of the elastic member and ensure the stability of stored energy, the power storage assembly in this embodiment may also be provided with a first fixing seat, one end of the elastic member is fixedly connected to the first fixing seat, and the other end of the elastic member is fixedly connected to the translation assembly.

[0072] like Figure 6 As shown, the force storage assembly 640 of this embodiment may include a first elastic member 641 , a first fixing seat 642 and an electromagnet 643 .

[0073] The first elastic member 641 is sleeved on the screw rod 624 , and one end of the first elastic member 641 is fixedly connected to the translation assembly 630 , and the other end of the first elastic member 641 is fixedly connected to the first fixing seat 642 .

[0074] For example, the first fixed seat 642 may be provided with a through hole, through which the screw rod 624 passes and is fixedly connected to the rotating block 626. In this embodiment, for example, a base plate may also be provided, which is provided between the power assembly and the translation assembly and the power storage assembly, and is fixedly connected to the chassis bracket of the vehicle chassis. The first fixed seat 642 of this embodiment may be fixed on the base plate to improve the stability of the overall structure.

[0075] Among them, the electromagnet 643 can be arranged on a side of the rotating block 626 away from the first fixed seat 642. That is, the rotating block 626 is arranged between the electromagnet 643 and the first fixed seat 642, so that the suction force provided by the electromagnet 643 is opposite to the direction of the elastic force provided to the translation assembly 630 when the elastic member is compressed. The electromagnet 643 can be fixedly connected to the substrate described above or to the chassis bracket of the vehicle chassis in any way. The electromagnet 643 should be fixed to the same side of the power assembly as the rotating block 626. Then the electromagnet can attract the rotating block 26 when the power is on, and release the rotating block 626 when the power is off.

[0076] In one embodiment, the force storage component can provide the electromagnet 643 with a moving axis, and the electromagnet can move along the moving axis. In this way, when the electromagnet 643 is powered on, the electromagnet 643 can move along the moving axis close to the rotating block 626 and attract the rotating block 626. That is, the electromagnet can attract the rotating block 626 when powered on, and release the rotating block when powered off.

[0077] Figure 7 It is a schematic structural diagram of a force storage component in a vehicle braking device according to another embodiment of the present disclosure.

[0078] According to an embodiment of the present disclosure, the force storage assembly may also be provided with a second fixed seat and a second elastic member, and the second elastic member provides a force for the electromagnet to move away from the rotating block, thereby avoiding the situation where the electromagnet is too close to the rotating block and thus causing resistance to the rotation of the rotating block when braking is required.

[0079] like Figure 7 As shown, the force storage assembly 740 of this embodiment may include, in addition to the first elastic member 741 , the first fixing seat 742 and the electromagnet 743 , for example, a second fixing seat 744 , a guide column 745 and a second elastic member 746 .

[0080] The second fixing seat 744 is arranged on a side of the electromagnet 743 away from the rotating block 726. One end of the guide post 745 passes through the second fixing seat 744 and is fixedly connected to the electromagnet 743, and the second elastic member 746 is sleeved on the guide post. For example, one end of the second elastic member 746 is fixedly connected to the second fixing seat 744, and the other end of the second elastic member 746 abuts against the other end of the guide post 745 away from the electromagnet 743. For example, the second fixing seat 744 may be provided with a through hole, and the guide post 745 passes through the second fixing seat 744 via the through hole.

[0081] In one embodiment, the second elastic member 746 is in a compressed state when the electromagnet is powered on. In this way, when the power is off, the second elastic member 746 can apply a force to the other end of the guide post, so that the guide post can drive the electromagnet 743 to move in a direction close to the second fixing seat 744 until the electromagnet 743 fits with the second fixing seat 744. In one embodiment, when the electromagnet 743 fits with the second fixing seat 744, the distance between the second fixing seat 744 and the other end of the guide post 745 can be less than or equal to the natural length of the second elastic member 746. In order to ensure stable fit between the electromagnet 743 and the second fixing seat 744 when the power is off, even when the electromagnet 743 fits with the second fixing seat 744, the distance between the second fixing seat 744 and the other end of the guide post 745 can still be less than the natural length of the second elastic member 746.

[0082] In one embodiment, the brake device may also be provided with a base plate, which is provided between the power assembly and the translation assembly and the power storage assembly and is fixedly connected to the chassis bracket of the vehicle chassis. The first fixing seat 742 and the second fixing seat 744 of this embodiment may be fixed on the base plate to improve the stability of the overall structure.

[0083] In one embodiment, in order to facilitate the electromagnet 743 to move along the length direction of the guide column 745, two side plates can be configured for the power storage assembly, and the two side plates are fixedly connected to the first fixed seat 742. The second fixed seat 744 can be fixedly set in position by being fixedly connected to the two side plates. The two side plates can be arranged perpendicular to the first fixed seat 742 and the second fixed seat 744, and the electromagnet 743 can be arranged between the two side plates.

[0084] In one embodiment, the number of the guide pillars 745 and the second elastic members 746 may be two or more, so as to increase the force provided to the electromagnet to move away from the rotating block.

[0085] Figure 8 It is a schematic diagram of the overall structure of a brake device for a vehicle according to an embodiment of the present disclosure.

[0086] like Figure 8As shown, the braking device 800 of this embodiment includes a power assembly 810 , a power transmission assembly 820 , a translation assembly 830 , a force storage assembly 840 and a braking assembly 850 .

[0087] In one embodiment, the power assembly 810 may include a reducer in addition to the motor. The input shaft of the reducer is connected to the output shaft of the motor, and the output shaft of the reducer is connected to the power transmission assembly 820. The power transmission assembly 820 may, for example, adopt the structure including two synchronous wheels and a transmission belt as described above. In this way, the output shaft of the reducer may be connected to the synchronous wheel with a lower position among the two synchronous wheels. By providing a reducer in the power assembly 810, it is possible to match the rotation speed and transmit torque between the motor and the synchronous wheel, thereby improving the service life of the power transmission assembly to a certain extent.

[0088] In one embodiment, the brake assembly 850 may include, for example, a brake wire storage member 851, a brake wire fixing member 852, and a brake wire 853. The brake wire storage member 851 may be fixedly connected to a chassis bracket of a vehicle chassis. When the brake assembly is released, a portion of the brake wire may be stored in the brake wire storage member 851. The brake wire fixing member 852 may be fixedly connected to the translation assembly 830, and may be specifically arranged on the upper surface of the translation assembly 830. The brake wire 853 may be drawn out from the brake wire storage member 851 and then passed through the brake wire fixing member 852, and extend from the position of the brake wire fixing member 852 to the wheel device, and one end of the brake wire 853 away from the brake wire storage member 851 may be connected to a rotating shaft sandwiched by two drum brake pads in the wheel device. Specifically, one end of the brake wire 853 away from the brake wire storage member 851 may be fixedly connected to the cable pull rod described above. The brake wire fixing member 852 can enable the position where the brake wire 853 is fixed to the brake wire fixing member 852 to move along with the translation assembly, so that the brake wire is tightened or released, and the brake wire can pull the rotating shaft to rotate.

[0089] In one embodiment, if Figure 8 As shown, the brake device 800 of this embodiment may include a distance sensor 860 in addition to the power assembly 810 , the power transmission assembly 820 , the translation assembly 830 , the force storage assembly 840 and the brake assembly 850 .

[0090] For example, the brake device 800 may also be provided with a distance sensor 860 to detect whether the brake assembly 850 is completely released. In the case of complete release, the electromagnet is energized so that the vehicle is maintained in an unbraked state, which is convenient for starting the vehicle. Specifically, the distance sensor 860 may be provided on the first fixed seat included in the power storage assembly 840, for example, to sense the distance between the first fixed seat and the translation assembly 830. When the vehicle is started, the motor in the power assembly 810 starts to run, so that the nut in the power transmission assembly 820 is translated along the screw rod in the direction away from the synchronous wheel, thereby pushing the translation assembly 830 to move in the direction close to the first fixed seat. When the distance between the translation assembly 830 and the first fixed seat is less than a predetermined distance, the central controller of the vehicle that is connected to the distance sensor 860 in communication may, for example, energize the electromagnet in the power storage assembly 840 through a control circuit, so that the electromagnet absorbs the rotating block in the power transmission assembly 820, thereby making the first elastic member in the power storage assembly 840 in a compressed state, thereby realizing energy storage.

[0091] In one embodiment, the brake device 800 may further include a distance measuring plate on the translation assembly 830 so that the distance sensor 860 can detect the distance between the translation assembly 830 and the first fixing seat.

[0092] In one embodiment, support plates fixedly connected to the fixing plates described above can also be provided on both sides of the power assembly to support the substrate for fixing the first fixing seat described above, so as to support the translation assembly 830 and the power storage assembly 840 through the substrate.

[0093] The brake device of the embodiment of the present disclosure can realize the brake control of the driving wheel and / or the steering wheel. Compared with the brake device in the related art, the overall structure size of the brake device can be effectively reduced, which is conducive to the miniaturization design of the vehicle.

[0094] It should be noted that in the technical solution of the present disclosure, the acquisition, collection, storage, use, processing, transmission, provision and disclosure of user personal information involved are in compliance with the relevant laws and regulations and do not violate public order and good morals.

[0095] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A braking device for a vehicle, comprising: Power components, A power transmission assembly connected to the output shaft of the power assembly; A translation assembly connected to the power transmission assembly, wherein the translation assembly is configured to translate under the transmission of the power transmission assembly; A power storage component connected to the translation component, wherein the power storage component is configured to store energy under the push of the translation component; as well as A brake assembly is connected to the translation assembly and the wheel device of the vehicle and is configured to be tightened or released under the drive of the translation assembly. Wherein, the power storage assembly is configured to release energy and push the translation assembly to translate when the vehicle is powered off, so that the brake assembly is tightened and drives the drum brake pads in the wheel device to apply force to the wheel; Wherein, the power transmission assembly comprises: Two synchronous wheels, one of the two synchronous wheels is connected to the output shaft of the power assembly; A screw rod, one end of which is connected to the output shaft of the other of the two synchronous wheels; A rotating block, fixedly connected to the other end of the screw rod; Wherein, the rotating block is made of ferromagnetic material; and the power storage component comprises: A first elastic member is sleeved on the screw rod, and one end of the first elastic member is fixedly connected to the translation assembly; A first fixing seat, wherein the first fixing seat is sleeved on the screw rod and is located between the first elastic member and the rotating block, and the other end of the first elastic member is fixedly connected to the first fixing seat; The electromagnet is arranged on a side of the rotating block away from the first elastic member, and is configured to be energized when the distance between the first fixed seat and the translation assembly is less than a predetermined distance, to attract the rotating block when energized, and to release the rotating block when powered off.

2. The device according to claim 1, wherein: The translation assembly and the force storage assembly are arranged on one side of the power assembly along the height direction; the power transmission assembly also includes: A transmission belt, sleeved on the two synchronous wheels; A nut, wherein the nut, the translation assembly and the force storage assembly are sequentially sleeved on the screw rod in a direction away from the other synchronous wheel, and the nut is fixedly connected to the translation assembly; Wherein, the nut is configured to translate relative to the screw rod along the length direction of the screw rod when the screw rod rotates driven by the other synchronous wheel.

3. The device according to claim 2, wherein: The power transmission assembly also includes: a fixing plate configured to fix the two synchronous wheels; and Two tensioning wheels are fixed between the two synchronous wheels on the fixed plate and are symmetrically arranged relative to the connection direction of the two synchronous wheels. The transmission belt is arranged between the two tensioning wheels.

4. The device according to claim 1, wherein: The power storage component also includes: A second fixing seat; a guide post, one end of which passes through the second fixing seat and is fixedly connected to the electromagnet; and a second elastic member, wherein the second elastic member is sleeved on the guide column, and one end of the second elastic member is fixedly connected to the second fixing seat, and the other end of the second elastic member is in contact with the other end of the guide column away from the electromagnet, Wherein, the force storage component is configured as follows: when the power is off, the second elastic member applies a force to the other end of the guide column, so that the guide column drives the electromagnet to move toward the second fixing seat until the electromagnet fits with the second fixing seat.

5. The apparatus according to claim 1, further comprising: The distance sensor is disposed on the first fixing seat and is used to sense the distance between the first fixing seat and the translation assembly.

6. The device according to claim 1, wherein: The brake assembly comprises: A brake cable storage member fixedly connected to a chassis bracket of the vehicle; a brake line fixing member, fixedly connected to the translation assembly; and The brake line is led out from the brake line receiving member, passes through the brake line fixing member, and is connected to the rotating shaft clamped by the drum brake pad in the wheel device. Wherein, the brake assembly is configured such that: the brake line is tightened or released under the translational movement of the translation assembly to drive the rotation shaft to rotate.

7. The device according to claim 1, wherein: The power assembly comprises: Motors; and A reducer, wherein the input shaft of the reducer is connected to the output shaft of the motor, and the output shaft of the reducer is connected to the power transmission assembly.

8. A vehicle chassis, comprising: A wheel device, the wheel device comprising a drum brake pad and a wheel; The brake device is drivingly connected to the drum brake pad in the wheel device, Wherein, the braking device is a braking device of a vehicle according to any one of claims 1 to 7.

9. The vehicle chassis according to claim 8, wherein: The drum brake pads include two drum brake pads; and the wheel device also includes: A wheel hub, wherein the two drum brake pads are relatively arranged between the wheel and the wheel hub, and the wheel hub is sandwiched in the space surrounded by the two drum brake pads; A rotating shaft is sandwiched between two first ends of the two drum brake pads that are close to each other; A fixed shaft, clamped between two adjacent second ends of the two drum brake pads; and A pull rod is fixedly connected to the rotating shaft and to the brake assembly of the brake device. Wherein, the wheel device is configured as follows: when the brake assembly is tightened / released, the brake assembly drives the pull rod and the rotating shaft to rotate, so that the distance between the two first ends increases / decreases, and the friction between the two drum brake pads and the wheel increases / decreases.

10. A vehicle comprising the vehicle chassis according to any one of claims 8 to 9.

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