CN211852619U

CN211852619U - New energy automobile

Info

Publication number: CN211852619U
Application number: CN202020399099.8U
Authority: CN
Inventors: 汪晶
Original assignee: Beijing Power Supply New Energy Technology Co ltd
Current assignee: Beijing Power Supply New Energy Technology Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-11-03
Anticipated expiration: 2030-03-25

Abstract

The embodiment of the application discloses new energy automobile relates to vehicle technical field, can design the size of the pivot of motor and the size of drum brake according to new energy automobile's operating mode in a flexible way. The new energy automobile includes: a rotating shaft, a flange plate and a drum brake of the motor; the first connecting portion of ring flange links to each other with the pivot of motor, drum brake with the second connecting portion of ring flange links to each other. The present application is applicable to loading items.

Description

New energy automobile

Technical Field

The application relates to the technical field of vehicles, in particular to a new energy automobile.

Background

The new energy automobile is used as a vehicle, and great convenience is provided for people's traveling. In the new energy automobile, the motor can provide power for the new energy automobile to travel, specifically, an output shaft (rotating shaft) of the motor in the new energy automobile is connected with a transmission shaft of the whole automobile through a coupler, wheels are mounted on the transmission shaft, and the power output by the motor is finally transmitted to the wheels so as to enable the new energy automobile to travel. During the driving process of a new energy automobile, a rotating shaft of an electric motor and a brake drum of a drum brake need to transmit torque, so that strict requirements are imposed on the size of the rotating shaft of the electric motor and the size of the drum brake, an expansion sleeve is a series of finished parts with specific specification and size, when the rotating shaft of the electric motor and the drum brake are connected, the rotating shaft of the electric motor needs to be machined according to the size of the expansion sleeve, and secondary machining is carried out on the drum brake, so that the selection of the size of the rotating shaft of the electric motor and the size of the drum brake is limited by the expansion sleeve in the design stage.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present application provides a new energy automobile, which can flexibly design the size of a rotating shaft of a motor and the size of a drum brake according to the working condition of the new energy automobile.

The embodiment of the application provides a new energy automobile, includes: a rotating shaft, a flange plate and a drum brake of the motor; the first connecting portion of ring flange links to each other with the pivot of motor, drum brake with the second connecting portion of ring flange links to each other.

According to a specific implementation manner of the embodiment of the application, the flange plate includes: the connecting structure comprises a cylinder and an annular disc, wherein the annular disc is arranged at one end of the cylinder, the first connecting part is arranged on the inner surface of the cylinder, and the second connecting part is arranged on the annular disc.

According to a specific implementation manner of the embodiment of the application, the first connecting part is an internal spline; the outer surface of the rotating shaft one end of the motor is provided with an external spline along the rotating shaft axis direction of the motor, and the external spline is connected with the internal spline in a matching way.

According to a specific implementation manner of the embodiment of the application, a limiting step is arranged at one end of the external spline on a rotating shaft of the motor.

According to a specific implementation manner of the embodiment of the application, an annular groove is formed in the end face, far away from the cylinder, of the annular disc; a baffle is arranged in the annular groove and is fixed at the end part of the rotating shaft of the motor through a bolt.

According to a concrete implementation mode of the embodiment of the application, the second connecting portion is provided with a second threaded hole, and a brake drum in the drum brake is connected with the second connecting portion of the flange plate through a bolt arranged in the second threaded hole in a penetrating mode.

According to a specific implementation manner of the embodiment of the application, an annular protrusion is arranged on the end face, far away from the cylinder, of the annular disc, and a brake drum in the drum brake is sleeved on the periphery of the annular protrusion.

According to a particular implementation of the embodiment of the application, the cylinder is coaxial with the annular projection.

The utility model provides a new energy automobile, first connecting portion through the ring flange link to each other with the pivot of motor, drum brake links to each other with the second connecting portion of ring flange, because the ring flange can be according to actual need machining dimension, specifically, the first connecting portion and the second connecting portion of ring flange can be based on the pivot of motor and drum brake's size design processing, like this, can be according to new energy automobile's operating mode, design the size of the pivot of motor and drum brake's size in a flexible way.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a new energy vehicle according to an embodiment of the present application;

FIG. 2 is a sectional view taken along line A-A of FIG. 1

Fig. 3 is a schematic structural diagram of a flange plate in an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a schematic structural diagram of a new energy vehicle according to an embodiment of the present application, and fig. 2 is a sectional view a-a of fig. 1, and with reference to fig. 1 and fig. 2, the new energy vehicle according to the present embodiment may include: a rotating shaft 10, a flange 12 and a drum brake 14 of the motor; the first connecting portion 120 of the flange 12 is connected to the rotating shaft 10 of the motor, and the drum brake 14 is connected to the second connecting portion 122 of the flange 12.

The rotating shaft 10 of the motor can be cylindrical in shape; the rotating shaft 10 of the motor can be made of metal materials through a machining process, and the materials can be cast steel, alloy steel and the like; in the running process of the new energy automobile, the rotating shaft 10 of the motor needs to output torque to drive the new energy automobile to run, so that the rigidity and hardness of the rotating shaft 10 of the motor need to meet the requirements of the working conditions of the new energy automobile.

The flange 12 can also be made of metal material by machining process, and the material can also be cast steel, alloy steel and the like; the flange 12 may be in the shape of a prism, specifically, a quadrangular prism, a pentagonal prism, a hexagonal prism, or the like, a cylinder, or a square or cylinder.

The drum brake 14 may include a brake drum 140, a brake spider assembly 142, a brake shoe assembly 144, and a parking brake pull assembly 146.

The drum brake 14 is connected with a transmission shaft of the whole vehicle through a coupler, wheels are arranged on the transmission shaft, the power output by the motor is finally transmitted to the wheels,

the drum brake drum 140 is mounted on the rotating shaft 10 of the motor through a flange 12, and is connected with a transmission shaft (not shown) of the whole vehicle through a coupling (not shown), and wheels (not shown) are mounted on the transmission shaft; the brake spider assembly 142 and brake shoe assembly 144 are mounted to an end cap of an electric motor (not shown); the parking brake pull assembly 146 is connected to a central brake or hand brake component.

In the running process of the new energy automobile, the rotating shaft 10 of the motor rotates, namely the motor outputs torque, the flange plate 12 is driven to rotate through the first connecting portion 120, the brake drum 140 is driven to rotate through the second connecting portion 122, the brake drum 140 enables the whole automobile transmission shaft to rotate through the coupler, the new energy automobile driving wheel is connected with the whole automobile transmission shaft, and wheels are mounted on the transmission shaft, so that power can be transmitted to the wheels, and the new energy automobile runs. In the running process of the new energy automobile, a driver can brake the new energy automobile according to road conditions, when the new energy automobile is braked, the driver pulls a hand brake or a foot brake to tighten the parking brake wire drawing assembly 146, and the parking brake wire drawing assembly 146 is connected with the brake shoe assembly 144, so that the brake shoe assembly 144 can expand to lock the brake drum 140, the brake drum 140 stops rotating, the rotating shaft 10 of the motor can stop rotating, power is not transmitted to the driving wheels any more, and the running speed of the new energy automobile can be reduced.

The first connection portion 120 may be a screw thread, and a corresponding screw thread is disposed on the rotating shaft of the motor, so as to facilitate connection and disconnection between the flange and the rotating shaft of the motor.

The number of the external splines is equal to the number of the internal splines. The number of the external splines can be 2, and can also be more than 2; the number of the internal splines can be 2, and can also be more than 2.

The tight cover that expands of connecting motor pivot and drum brake among the prior art, because adopt the high strength bolt to expand the inner ring of tight cover and the pivot of motor and produce frictional force, when the dismouting, need use professional equipment, the dismouting is extremely inconvenient, and in work in case the tight cover that expands or the pivot of motor produces fatigue wear, and this kind of wearing and tearing are irreversible, this will make the pivot of motor and expand and produce the slip between the tight cover, finally lead to the pivot of motor can not drive the wheel rotation effectively, make in the new energy automobile working process, the reliability reduces. In the embodiment, the rotating shaft and the flange plate of the motor are connected in a matched manner by adopting the internal spline and the external spline, so that the rotating shaft and the flange plate are convenient to disassemble and assemble, and further, new parts can be conveniently replaced even if the rotating shaft or the flange plate of the motor is abraded due to long-term work.

Referring to fig. 2, in order to prevent the flange plate and the rotating shaft of the motor from moving in the axial direction of the motor, in one example, a limit step is provided at one end of the external spline on the rotating shaft of the motor.

One end face of the flange plate is clamped on the limiting step, so that the flange plate and the rotating shaft of the motor do not move in one axial direction.

In one example, the second connecting portion 122 is provided with a second threaded hole (not shown), and the brake drum 140 of the drum brake 14 is connected to the second connecting portion 122 of the flange 12 by a bolt (not shown) inserted into the second threaded hole.

In this embodiment, the first connecting portion of the flange plate is connected to the rotating shaft of the motor, and the drum brake is connected to the second connecting portion of the flange plate, so that the flange plate can be subjected to size processing according to actual requirements, and specifically, the first connecting portion and the second connecting portion of the flange plate can be subjected to size design processing according to the rotating shaft of the motor and the size of the drum brake, so that the size of the rotating shaft of the motor and the size of the drum brake can be flexibly designed according to the working condition of the new energy vehicle, and in addition, a design scheme of the size of the rotating shaft of the motor and the size of the drum brake can be flexibly selected; compared with the price of the high amount of the expansion sleeve, the price of the flange plate in the embodiment is relatively low, so that the manufacturing cost of the new energy automobile can be reduced, and the flange plate in the embodiment is a replaceable part and is convenient to process and manufacture.

Fig. 3 is a schematic structural diagram of a flange according to an embodiment of the present application, and as shown in fig. 3, the flange includes: a cylinder 124 and an annular disc 126, the annular disc 126 being provided at one end of the cylinder 124, the first connecting portion 120 being provided on an inner surface of the cylinder 124, and the second connecting portion 122 being provided on the annular disc 126.

The flange plate in the embodiment comprises a cylinder and an annular plate, the inner surface of the cylinder is provided with a first connecting part, the annular plate is provided with a second connecting part, and the flange plate in the embodiment is simple in structure and convenient to process and manufacture while a rotating shaft of the motor and the drum brake are connected.

In one example, referring to fig. 2 and 3, in order to keep the flange from running axially of the motor, an annular groove 128 is provided in the end of the annular disc 126 remote from the cylinder 124; and a baffle 16 is arranged in the annular groove 128, and the baffle 16 is fixed at the end part of the rotating shaft of the motor through a bolt 17.

The diameter of the flap 16 is smaller than the diameter of the recess 128; the baffle 16 may be embodied as a baffle, or a combination of a retainer ring 160 and a stop washer 162 may be employed. The stop piece 16 is placed in the groove 128 to axially limit the flange 12.

To facilitate mounting of the brake drum 140 of the drum brake 14 on the flange 12, an annular projection 130 is provided on the end face of the annular disc 126 remote from the cylinder 124, and the brake drum 140 of the drum brake 14 is fitted around the periphery of the annular projection 130.

In this embodiment, the annular protrusion is disposed on the end surface of the annular disc far from the cylinder, and the brake drum in the drum brake is sleeved on the periphery of the annular protrusion, so that the brake drum in the drum brake is conveniently mounted on the flange plate, and the flange plate and the drum are conveniently positioned.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A new energy automobile is characterized by comprising: a rotating shaft, a flange plate and a drum brake of the motor; the first connecting portion of ring flange links to each other with the pivot of motor, drum brake with the second connecting portion of ring flange links to each other.

2. The new energy automobile as claimed in claim 1, wherein the flange plate comprises: the connecting structure comprises a cylinder and an annular disc, wherein the annular disc is arranged at one end of the cylinder, the first connecting part is arranged on the inner surface of the cylinder, and the second connecting part is arranged on the annular disc.

3. The new energy automobile according to claim 1, wherein the first connection portion is an internal spline;

the outer surface of the rotating shaft one end of the motor is provided with an external spline along the rotating shaft axis direction of the motor, and the external spline is connected with the internal spline in a matching way.

4. The new energy automobile as claimed in claim 3, wherein a limit step is provided at one end of the external spline on the rotating shaft of the motor.

5. The new energy automobile according to claim 2, wherein an annular groove is formed in an end face, away from the cylinder, of the annular disc;

a baffle is arranged in the annular groove and is fixed at the end part of the rotating shaft of the motor through a bolt.

6. The new energy automobile as claimed in claim 1, wherein the second connecting portion is provided with a second threaded hole, and a brake drum of the drum brake is connected to the second connecting portion of the flange plate through a bolt inserted into the second threaded hole.

7. The new energy automobile as claimed in claim 2, wherein an annular protrusion is provided on an end surface of the annular disc away from the cylinder, and a brake drum of the drum brake is fitted around a periphery of the annular protrusion.

8. The new energy automobile as claimed in claim 7, wherein the cylinder is coaxial with the annular protrusion.