CN210707360U

CN210707360U - Chassis and vehicle

Info

Publication number: CN210707360U
Application number: CN201921830992.5U
Authority: CN
Inventors: 李佳
Original assignee: Beijing Sankuai Online Technology Co Ltd
Current assignee: Beijing Sankuai Online Technology Co Ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-06-09
Anticipated expiration: 2029-10-28

Abstract

The application relates to a chassis and a vehicle, and belongs to the technical field of vehicles. The chassis includes the subassembly of marcing that has braking function, the subassembly of marcing includes in-wheel motor, knuckle, braking worm wheel, braking worm and braking motor, wherein: the hub motor comprises a rotor and a stator, and the brake worm wheel is fixed on the rotor; the knuckle includes a mounting hole in which the stator is mounted; the stator is fixed on the steering knuckle; the brake worm is rotatably connected with the steering knuckle; the brake worm wheel is meshed with the brake worm, and the brake worm wheel and the brake worm meet a self-locking condition; the output shaft of the brake motor is in transmission connection with the brake worm, and the brake motor is used for controlling the rotation of the brake worm. By adopting the brake device, the technical problem that the brake device is complex in structure and high in manufacturing cost can be effectively solved.

Description

Chassis and vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to a chassis and a vehicle.

Background

The braking of the vehicle is divided into a service braking and a parking braking, wherein the service braking is to control the vehicle to gradually decelerate in the running process of the vehicle, and the parking braking is to prevent the vehicle from rolling under the parking state of the vehicle. For some large vehicles, such as cars and trucks, because of their large mass and speed, their braking is difficult, generally a special service brake device is used to implement service braking, a special parking brake device is used to implement parking braking, and the two service brake devices and the parking brake device are separated from each other and have complicated structures.

With the development of the logistics industry, more and more logistics vehicles are appeared, which tend to be of lower speed and lower quality. These logistics vehicles are similar to large vehicles, and adopt a service brake device and a parking brake device which are separated from each other to realize service braking and parking braking.

In the course of implementing the present application, the inventors found that the related art has at least the following problems:

many logistics vehicles feature a low mass and low speed, so their braking is relatively simple. In these logistics vehicles, since the structure of the brake device and the parking brake device which are separated from each other is too complicated and the manufacturing cost is high, a demand for a brake device having a simple structure is high.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a chassis and a vehicle, which can solve the technical problems existing in the related technology, and the technical scheme of the chassis and the vehicle is as follows:

in a first aspect, there is provided a chassis comprising a travel assembly having a braking function, the travel assembly comprising a hub motor, a knuckle, a brake worm gear, a brake worm, and a brake motor, wherein:

the hub motor comprises a rotor and a stator, and the brake worm wheel is fixed on the rotor;

the knuckle includes a mounting hole in which the stator is mounted;

the brake worm is rotatably connected with the steering knuckle;

the brake worm wheel is meshed with the brake worm, and the brake worm wheel and the brake worm meet a self-locking condition;

the output shaft of the brake motor is in transmission connection with the brake worm, the brake motor is used for controlling the rotation of the brake worm, when the travelling assembly is in a parking brake state, the brake motor controls the brake worm to be in a stall state, and when the travelling assembly is in a service brake state, the brake motor controls the rotating speed of the brake worm to be reduced.

In one possible implementation, the output shaft of the brake motor is fixedly connected to the brake worm.

In a possible implementation manner, the traveling assembly further comprises a transmission gear set, and the transmission gear set is used for transmitting the power output by the brake motor to the brake worm;

and the brake motor is used for controlling the rotation of the brake worm through the transmission gear set.

In one possible implementation manner, the transmission gear set comprises a driving transmission gear and a driven transmission gear, the driving transmission gear is installed on an output shaft of the brake motor, the driven transmission gear is fixedly connected with the brake worm, and the driving transmission gear is meshed with the driven transmission gear;

and the brake motor is used for controlling the rotation of the brake worm through the driving transmission gear and the driven transmission gear.

In one possible implementation manner, the driving transmission gear and the driven transmission gear are both cylindrical gears;

and the rotation axis of the brake worm is parallel to the rotation axis of the output shaft of the brake motor.

In one possible implementation, the steering knuckle includes a first mounting plate, and the brake motor is fixed to the first mounting plate;

the first mounting plate is provided with a first through hole, an output shaft of the brake motor penetrates through the first through hole, the driving transmission gear is mounted on the output shaft, and the driving transmission gear and the brake motor are located on two sides of the first mounting plate.

In one possible implementation, the steering knuckle further includes a second mounting plate, a first end of the brake worm is rotatably connected with the second mounting plate, and a second end of the brake worm is rotatably connected with the first mounting plate;

the first mounting plate is further provided with a second through hole, the second end of the brake worm penetrates through the second through hole, the driven transmission gear is mounted at the second end of the brake worm, and the driven transmission gear and the brake worm are located on two sides of the first mounting plate.

In one possible implementation, the driving transmission gear and the driven transmission gear are both bevel gears;

and the rotation axis of the brake worm is vertical to the rotation axis of the output shaft of the brake motor.

In one possible implementation, the chassis includes four of the travel assemblies.

In one possible embodiment, the brake worm wheel is fastened to the rotor by screws or bolts.

In one possible implementation, the travel assembly further includes a wheel mounted on the rotor.

In a second aspect, there is provided a vehicle comprising a chassis as described in the first aspect.

The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:

embodiments of the present application provide a chassis that may be used on vehicles with low mass and low speed, the chassis including a travel assembly having a braking function. When the advancing assembly is in a parking braking state, the braking motor controls the braking worm to be in a stalling state, so that even if the hub motor has a rotating trend, the braking worm wheel and the braking worm meet a self-locking condition, the braking worm wheel cannot push the braking worm to rotate, a rotor of the hub motor cannot rotate, and the parking braking is finished. When the advancing assembly is in a service braking state, the rotating speed of the rotor of the hub motor and the rotating speed of the brake motor are controlled to be reduced, and the rotating speeds of the brake worm and the brake worm wheel are coordinated, so that the rotating speed of the rotor is gradually reduced to complete service braking. The subassembly of marcing that has braking function in the chassis that this application embodiment provided fuses arresting gear and parking arresting gear structure as an organic whole for arresting gear's structure is simpler, has reduced arresting gear's cost of manufacture, thereby, provides a simple structure's that can use in the commodity circulation car arresting gear.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. In the drawings:

FIG. 1 is a schematic view of a travel assembly having a braking function shown in an embodiment of the present application;

FIG. 2 is a schematic view of a travel assembly having a braking function shown in an embodiment of the present application;

fig. 3 is a schematic view of a traveling assembly with a braking function shown in the embodiment of the present application after hiding the knuckle 2;

fig. 4 is a schematic view of a traveling assembly with a braking function hiding the in-wheel motor 1 according to the embodiment of the present application;

fig. 5 is a schematic view of a travel assembly with a braking function according to an embodiment of the present application.

Description of the figures

1. The brake device comprises an in-wheel motor, 101, a rotor, 102, a stator, 2, a steering knuckle, 201, a first mounting plate, 202, a second mounting plate, 203, a mounting hole, 3, a brake worm wheel, 4, a brake worm, 5, a brake motor, 6, a transmission gear set, 601, a driving transmission gear, 602, a driven transmission gear, 7 and a wheel.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The chassis provided by the embodiment of the application can be applied to vehicles with lower speed and lighter weight. For example, the method can be applied to some low-speed logistics vehicles, which can be manned logistics vehicles or unmanned logistics vehicles. It is also applicable to toy vehicles including remote control vehicles that may be hand-held, as well as toy vehicles that may be driven by humans (e.g., children's scooters and toy cars, crews driving toy trains, etc.). The device can also be applied to small tricycles, small mopeds and the like.

The embodiment of the application provides a chassis, which comprises a traveling assembly with a braking function, wherein the traveling assembly comprises a hub motor 1, a steering knuckle 2, a braking worm wheel 3, a braking worm 4 and a braking motor 5. The in-wheel motor 1 comprises a rotor 101 and a stator 102, a brake worm wheel 3 is fixed on the rotor 101, a steering knuckle 2 comprises a mounting hole 203, and the stator 102 is mounted in the mounting hole. The brake worm 4 is rotatably connected to the steering knuckle 2. The brake worm wheel 3 is meshed with the brake worm 4, and the brake worm wheel 3 and the brake worm 4 meet self-locking conditions. An output shaft of the brake motor 5 is in transmission connection with the brake worm 3, the brake motor 5 is used for controlling the rotation of the brake worm 4, when the travelling assembly is in a parking brake state, the brake motor 5 controls the brake worm 4 to be in a stop rotation state, and when the travelling assembly is in a service brake state, the brake motor 5 controls the rotation speed of the brake worm 4 to be reduced.

The chassis is a combination formed by four parts of a transmission system, a running system, a steering system and a braking system on the vehicle, is used for supporting and mounting a vehicle engine and each part of the vehicle engine to form the integral shape of the vehicle, bears the power of the engine and ensures normal running. The traveling component with the braking function in the chassis comprises two parts of a traveling system and a braking system, namely the traveling component with the braking function combines the traveling system and the braking system together.

The hub motor 1 is used for driving the wheel to rotate. The hub motor 1 comprises a rotor 101 and a stator 102, wherein the rotor 101 is a rotating part on the hub motor 1, and wheels can be installed on the rotor 101; the stator 102 is a non-rotating part of the in-wheel motor 1 and can be fixedly connected with the knuckle 2. In one possible implementation, the knuckle 2 includes a mounting hole 203, and the stator 102 is mounted in the mounting hole 203. The mounting hole 203 may be a through mounting hole (as shown in fig. 4) or a blind mounting hole, and the stator 102 is welded or fixed in the mounting hole 203 by a screw or a bolt. In another possible implementation, the knuckle 2 includes a stator mounting plate to which the stator 102 is fixed. The stator mounting plate is a plate body for mounting the stator, the stator 102 may be welded to the stator mounting plate, or the stator 102 is mounted on the stator mounting plate by screws or bolts, and at this time, the stator mounting plate has through holes for the bolts or the bolts to pass through.

The knuckle 2, which may also be called a cleat, is one of the important parts in a steering axle of a vehicle, and enables the vehicle to stably travel and sensitively transmit the traveling direction. The steering knuckle 2 functions to transmit and receive a load at the front of the vehicle, and to support and rotate the wheel about the kingpin to steer the vehicle (as shown in fig. 1, the portion enclosed by the dashed line in fig. 1 is a pin hole for passing the kingpin).

The brake worm wheel 3 and the brake worm 4 can be meshed with each other, and the self-locking condition is met, namely the unfolding spiral angle of the brake worm 4 is smaller than the contact friction angle of the brake worm wheel 3 and the brake worm 4. When the worm wheel and the worm meet the self-locking condition, the worm can drive the worm wheel to rotate, but the worm wheel cannot drive the worm to rotate.

The brake motor 5 can control the rotation of the brake worm 4. An output shaft of the brake motor 5 is in transmission connection with the brake worm 3, and the output shaft of the brake motor 5 can be directly connected with the brake worm 4, so that the brake worm 4 is directly driven; it is also possible to control the rotation of the brake worm 4 by means of a transmission gear set.

Since the brake worm wheel 3 and the brake worm 4 are always in a meshed state, in order that the brake worm 4 does not affect the normal rotation of the brake worm wheel 3 and the rotor 101 when the vehicle normally runs, the rotation speeds of the brake worm 4 and the brake worm wheel 3 should be coordinated. Therefore, when the vehicle speed changes, the rotation speeds of the brake motor 5 and the in-wheel motor 1 should be changed at the same time, and the rotation speeds of the brake worm 4 and the brake worm wheel 3 should be coordinated. To achieve the purpose, the hub motor 1 and the brake motor 5 are both connected with the vehicle-mounted platform, so that the vehicle-mounted platform controls the rotation speed of the brake worm 4 and the brake worm wheel 3 to be matched with each other, and normal running and braking of the vehicle are completed.

During running and in a parking state of the vehicle, there are four states in total, namely a normal running state, a normal braking state, an emergency braking state and a parking braking state. When the vehicle is in the above states, the operation states of the components in the traveling assembly can be as follows:

when the vehicle is in a normal driving state, the brake motor 5 and the hub motor 4 need to normally rotate according to the actual speed, and attention is paid to the coordination of the rotating speeds of the brake worm wheel 3 and the brake worm 4.

When the vehicle is in a normal braking state, the rotating speeds of the brake motor 5 and the hub motor 4 are reduced simultaneously, and the rotating speeds of the brake worm wheel 3 and the brake worm 4 are coordinated to complete normal braking.

When the vehicle is in an emergency braking state, the brake motor 5 stops rotating, and at the same time, the brake worm 4 also stops rotating. Since the brake worm wheel 3 and the brake worm 4 satisfy the self-locking condition, the brake worm wheel 3 cannot drive the brake worm 4 to rotate, so that the brake worm wheel 3 stops rotating, and further the rotor 101 and the wheels on the rotor 101 stop rotating, and the emergency braking is completed.

When the vehicle is in a parking braking state, the brake motor 5 and the hub motor 1 stop rotating, and at the same time, the brake worm 4 and the brake worm wheel 3 also stop rotating. When the vehicle is subjected to external force or has a moving trend due to other reasons, the brake worm wheel 3 and the brake worm 4 meet the self-locking condition, so that the brake worm wheel 3 cannot drive the brake worm 4 to rotate, the brake worm wheel 3 cannot rotate, further, the rotor 101 and wheels on the rotor 101 cannot rotate, and the parking brake is realized.

The subassembly of marcing that this application embodiment provided, when being in the parking braking state, brake motor 5 control brake worm 4 is in stall state, like this, even in wheel hub motor 1 has the pivoted trend, because brake worm wheel 3 and brake worm 4 satisfy the auto-lock condition, brake worm wheel 3 can not push brake worm 4 and rotate, so rotor 101 of wheel hub motor 1 also can not rotate to parking braking has been accomplished. When in the service braking state, the rotation speed of the rotor 101 of the hub motor 1 and the rotation speed of the brake motor 5 are controlled to be reduced, and attention is paid to the coordination of the rotation speeds of the brake worm 4 and the brake worm wheel 3, so that the rotation speed of the rotor 101 is gradually reduced to complete service braking. The subassembly of marcing that this application embodiment provided fuses arresting gear and parking arresting gear into an organic whole structure for arresting gear's structure is simpler, has reduced arresting gear's cost of manufacture.

And, because of utilizing the self-locking characteristic of the worm gear, when the brake worm 4 stalls, the brake worm wheel 3 can stop immediately, so has provided great urgent braking force and parking braking force, has satisfied the requirement of great braking force and shorter braking time at the same time.

In one possible embodiment, the output shaft of the brake motor 5 is fixedly connected to the brake worm 4.

In the implementation, the output shaft of brake motor 5 is direct and brake worm 4 fixed connection to, the power of the output shaft of brake motor 5 can directly transmit to brake worm 4 on, need not set up the driving medium between brake motor 5 and the brake worm 4, thereby, the structure is simpler.

The output shaft of the brake motor 5 may be directly formed as the brake worm 4, or the output shaft of the brake motor 5 may be coupled to the brake worm 4 via a coupling.

In one possible implementation manner, in order to facilitate the transmission of the power output by the brake motor 5 to the brake worm 4, the traveling assembly provided in the embodiment of the present application further includes a transmission gear set 6, and the transmission gear set 6 is used for transmitting the power output by the brake motor 5 to the brake worm 4. And the brake motor 5 is used for controlling the rotation of the brake worm 4 through the transmission gear set 6.

The transmission gear set 6 may include a plurality of transmission gears, the plurality of transmission gears may include a cylindrical gear and a bevel gear, and the plurality of transmission gears are engaged with each other two by two. The gear at the power input end of the transmission gear set 6 is connected with the brake motor 5, and the gear at the power output end of the transmission gear set 6 is connected with the brake worm 4.

In practice, the beneficial effects that can be brought by the arrangement of the transmission gear set 6 include at least the following two:

firstly, the arrangement of the transmission gear set 6 facilitates the installation of each component in a limited installation space, namely when the installation space is limited, so that the output shaft of the brake motor 5 cannot be directly connected with the brake worm 4, the brake motor 5 can be installed at a position far away from the brake worm 4, and then the brake motor 5 and the brake worm 4 can be connected through the transmission gear set 6, so that the power output by the brake motor 5 can be transmitted to the brake worm 4.

Secondly, under the condition that the rotating speed of the brake motor 5 needs to be reduced, the transmission gear set 6 can also play the role of a speed reducer, namely, the transmission gear set 6 reduces the high rotating speed of the output shaft of the brake motor 5 and then transmits the high rotating speed to the brake worm 4.

It should be noted that the number and the types of the transmission gears included in the transmission gear set 6 are not limited in the present application.

In a possible implementation manner, the transmission gear set 6 may include a transmission gear as described below, the transmission gear set 6 includes a driving transmission gear 601 and a driven transmission gear 602, the driving transmission gear 601 is installed on the output shaft of the brake motor 5, the driven transmission gear 602 is fixedly connected with the brake worm 4, and the driving transmission gear 601 is meshed with the driven transmission gear 602. And the brake motor 5 is used for controlling the rotation of the brake worm 4 through the driving transmission gear 601 and the driven transmission gear 602.

In implementation, the rotation axis of the driving transmission gear 601 is collinear with the rotation axis of the output shaft of the brake motor 5, and the rotation axis of the driven transmission gear 602 is collinear with the rotation axis of the brake worm 4.

The whole transmission process of the brake motor 5 for controlling the rotation of the brake worm 4 can be as follows, an output shaft of the brake motor 5 drives the driving transmission gear 601 to rotate, the driving transmission gear 601 is meshed with the driven transmission gear 602, so the driving transmission gear 601 drives the driven transmission gear 602 to rotate, and the driven transmission gear 602 is fixedly connected with the brake worm 4, so the driven transmission gear 602 drives the brake worm 4 to rotate. Therefore, when the rotation speed of the brake motor 5 is changed, the rotation speed of the brake worm 4 is also changed.

In one possible implementation, as shown in fig. 1 to 5, the driving transmission gear 601 and the driven transmission gear 602 are both cylindrical gears, and the rotation axis of the brake worm 4 is parallel to the rotation axis of the output shaft of the brake motor 5.

The driving transmission gear 601 and the driven transmission gear 602 are both cylindrical gears, specifically, they may be straight toothed cylindrical gears, and may also be helical toothed cylindrical gears. The number of teeth of the driving transmission gear 601 and the driven transmission gear 602 can be the same or different.

In implementation, when the number of teeth of the driving transmission gear 601 and the driven transmission gear 602 is the same, the rotation speed of the output shaft of the brake motor 5 is the same as that of the brake worm 4. When the number of teeth of the driving transmission gear 601 and the driven transmission gear 602 is different, the rotating speed of the output shaft of the brake motor 5 is different from that of the brake worm 4.

In one possible implementation, the brake motor 5 may be mounted on the knuckle 2 in a manner as described below, the knuckle 2 including a first mounting plate 201, the brake motor 5 being fixed to the first mounting plate 201. The first mounting plate 201 is provided with a first through hole through which an output shaft of the brake motor 5 passes, the driving transmission gear 601 is mounted on the output shaft of the brake motor 5, and the driving transmission gear 601 and the brake motor 5 are located at both sides of the first mounting plate 201.

The first mounting plate 201 is a plate extending from the knuckle 2 and used for mounting the brake motor 5.

In practice, referring to fig. 4, the body portion of the brake motor 5 is fixedly connected to the first mounting plate 201, and optionally, the fixed connection may be welding or a connection through a screw. The first mounting plate 201 is provided with a first through hole, through which the output shaft of the brake motor 5 passes, and a driving transmission gear 601 is mounted on the output shaft, optionally, the driving transmission gear 601 may be mounted on the output shaft in a key connection manner.

In a possible implementation, the brake worm 4 may be mounted on the steering knuckle 2 in a manner as described below, the steering knuckle 2 further comprising a second mounting plate 202, the first end of the brake worm 4 being rotatably connected to the second mounting plate 202, and the second end of the brake worm 4 being rotatably connected to the first mounting plate 201. The first mounting plate 201 further has a second through hole through which the second end of the brake worm 4 passes, the driven transmission gear 602 is mounted at the second end of the brake worm 4, and the driven gear 602 and the brake worm 4 are located at both sides of the first mounting plate 201.

The first mounting plate 201 is a plate body extending from the knuckle 2 and used for mounting the brake motor 5 and the brake worm 4. The second mounting plate 202 is a plate extending from the knuckle 2 for mounting the brake worm 4.

In an implementation, the first end of the brake worm 4 is rotatably connected to the second mounting plate 202, and specifically, a bearing hole may be provided in the second mounting plate 202, and a bearing is disposed in the bearing hole, and the first end of the brake worm 4 contacts an inner wall of the bearing, so that the first end of the brake worm 4 is rotatably connected to the second mounting plate 202.

The second end of the brake worm 4 is rotatably connected to the first mounting plate 201, and specifically, a second through hole may be provided in the first mounting plate 201, and a bearing is provided in the second through hole, and the second end of the brake worm 4 contacts with an inner wall of the bearing, so that the rotatable connection of the second end of the brake worm 4 to the first mounting plate 201 is achieved. And, the second end of the brake worm 4 passes through the second through hole and the bearing hole to mount the driven transmission gear 602.

The driven drive gear 602 may be keyed to the second end of the brake worm 4 and the second end of the brake worm 4 may extend out of the mounting shaft to mount the driven drive gear 602.

In a possible implementation mode, the driving transmission gear 601 and the driven transmission gear 602 are both bevel gears, and the rotation axis of the brake worm 4 is perpendicular to the rotation axis of the output shaft of the brake motor 5.

The driving transmission gear 601 and the driven transmission gear 602 have the same or different numbers of teeth.

In implementation, when the rotation axis of the brake worm 4 is perpendicular to the rotation axis of the output shaft of the brake motor 5, in order to enable the output shaft of the brake motor 5 to drive the brake worm 4 to rotate, the bevel gear set is used to change the rotation direction, so that the brake motor 5 can drive the brake worm 4.

In one possible implementation, the chassis includes four travel assemblies with braking functionality.

In practice, the chassis provided by the embodiment of the application can be applied to a four-wheeled vehicle, and the chassis can comprise four traveling assemblies with traveling functions.

In addition, the chassis provided by the embodiment of the present application may further include any number of traveling assemblies having a braking function, which is not limited in the present application.

It should be noted that in one possible implementation, the travel assemblies of the vehicle chassis may all be travel assemblies having a braking function. In another possible implementation, the travel assembly of the vehicle chassis may include both the travel assembly with the brake function of the embodiment of the present application and the ordinary travel assembly. For example, there are two traveling assemblies on a four-wheeled vehicle as the traveling assembly having the braking function, and the other two as the ordinary traveling assemblies. Two traveling assemblies on the three-wheeled vehicle are traveling assemblies with braking functions, and the other traveling assembly is a common traveling assembly. It will also be understood that the chassis comprises the same number of travelling assemblies with braking function as the number of braking wheels.

In one possible embodiment, the brake worm wheel 3 is fastened to the rotor 101 by screws or bolts.

In practice, as shown in fig. 3 and 4, the brake worm wheel 3 is uniformly provided with a plurality of through holes for screws to pass through, the rotor 101 is provided with a plurality of threaded holes opposite to the through holes provided on the brake worm wheel 3, and each screw passes through one through hole on one brake worm wheel 3 and is screwed in one threaded hole, thereby fixing the brake worm wheel 3 on the rotor 101.

As shown in fig. 3, the brake worm wheel 3 has a stator through hole in the middle for the stator 102 to pass through. In order to ensure that the brake worm wheel 3 does not rub against the stator 102 when rotating with the rotor 101, there should be sufficient clearance between the stator bore and the stator 102.

In one possible implementation, as shown in fig. 5, the traveling assembly provided by the embodiment of the present application further includes a wheel 7, and the wheel 7 is mounted on the rotor 101.

The embodiment of the application provides a vehicle, and the vehicle comprises the chassis.

Wherein the vehicle is a vehicle with low speed and light weight. For example, in the low-speed logistics vehicles, the low-speed logistics vehicles may be manned logistics vehicles or unmanned logistics vehicles. Toy vehicles may also be provided, including remote control vehicles that may be hand-held, as well as toy vehicles that may be driven by a person (e.g., children's scooters and toy cars, crews, etc.). And also can be a small tricycle, a small moped and the like.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. Chassis, characterized in that it comprises a travel assembly with braking function, comprising a hub motor (1), a knuckle (2), a brake worm wheel (3), a brake worm (4) and a brake motor (5), wherein:

the hub motor (1) comprises a rotor (101) and a stator (102), and the brake worm wheel (3) is fixed on the rotor (101);

the knuckle (2) comprising a mounting hole (203), the stator (102) being mounted in the mounting hole (203);

the brake worm (4) is rotatably connected with the steering knuckle (2);

the brake worm wheel (3) is meshed with the brake worm (4), and the brake worm wheel (3) and the brake worm (4) meet a self-locking condition;

the output shaft of the brake motor (5) is in transmission connection with the brake worm (4), the brake motor (5) is used for controlling the rotation of the brake worm (4), when the travelling assembly is in a parking brake state, the brake motor (5) controls the brake worm (4) to be in a stop rotation state, and when the travelling assembly is in a service brake state, the brake motor (5) controls the rotation speed of the brake worm (4) to be reduced.

2. The chassis according to claim 1, characterized in that the output shaft of the brake motor (5) is fixedly connected with the brake worm (4).

3. The chassis according to claim 1, characterized in that the travelling assembly further comprises a transmission gear set (6), the transmission gear set (6) is used for transmitting the power output by the brake motor (5) to the brake worm (4);

and the brake motor (5) is used for controlling the rotation of the brake worm (4) through the transmission gear set (6).

4. The chassis according to claim 3, characterized in that the transmission gear set (6) comprises a driving transmission gear (601) and a driven transmission gear (602), the driving transmission gear (601) is installed on an output shaft of the brake motor (5), the driven transmission gear (602) is fixedly connected with the brake worm (4), and the driving transmission gear (601) is meshed with the driven transmission gear (602);

the brake motor (5) is used for controlling the rotation of the brake worm (4) through the driving transmission gear (601) and the driven transmission gear (602).

5. The chassis according to claim 4, wherein the driving transmission gear (601) and the driven transmission gear (602) are both cylindrical gears;

the rotating axis of the brake worm (4) is parallel to the rotating axis of the output shaft of the brake motor (5).

6. Chassis according to claim 5, characterized in that the steering knuckle (2) comprises a first mounting plate (201), the brake motor (5) being fixed on the first mounting plate (201);

the first mounting plate (201) is provided with a first through hole, an output shaft of the brake motor (5) penetrates through the first through hole, the driving transmission gear (601) is mounted on the output shaft, and the driving transmission gear (601) and the brake motor (5) are located on two sides of the first mounting plate (201).

7. Chassis according to claim 6, characterized in that the steering knuckle (2) further comprises a second mounting plate (202), the first end of the brake worm (4) being rotatably connected with the second mounting plate (202), the second end of the brake worm (4) being rotatably connected with the first mounting plate (201);

first mounting panel (201) still has the second through-hole, the second end of brake worm (4) passes the second through-hole, install driven drive gear (602) the second end of brake worm (4), driven drive gear (602) with brake worm (4) are located the both sides of first mounting panel (201).

8. The chassis according to claim 4, wherein the driving transmission gear (601) and the driven transmission gear (602) are both bevel gears;

the rotating axis of the brake worm (4) is vertical to the rotating axis of the output shaft of the brake motor (5).

9. The chassis of any of claims 1-8, wherein the chassis comprises four of the traveling assemblies.

10. A vehicle, characterized in that the vehicle comprises a chassis according to any of claims 1-9.