CN214331272U

CN214331272U - Brake and electric drive axle thereof

Info

Publication number: CN214331272U
Application number: CN202022797463.9U
Authority: CN
Inventors: 吴志强; 李春光; 杨鹏飞
Original assignee: Guangdong Fuwa Engineering Manufacturing Co Ltd
Current assignee: Guangdong Fuwa Engineering Manufacturing Co Ltd; Guangdong Fuwa Heavy Industry Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-10-01
Anticipated expiration: 2030-11-27

Abstract

The utility model provides a brake and an electric drive axle thereof, wherein the brake comprises a bracket, a first end surface and a second end surface which are oppositely arranged along the axial direction of the brake, and an inner cavity which is arranged on the bracket; the brake assembly is arranged in the inner cavity; the adjusting arm is connected to the brake assembly and is provided with a driving part; the brake air chamber is arranged on the bracket and is provided with a push rod, and the push rod is positioned between the first end surface and the second end surface and is arranged at an interval with the driving part in the axial direction of the brake; the connecting mechanism is used for driving the adjusting arm to rotate and provided with a first connecting part and a second connecting part, the first connecting part is closer to the second end face than the second connecting part and is connected with the push rod, and the second connecting part is connected with the driving part. When the support is arranged on the bridge cross beam, the brake air chamber is outwards staggered for a certain distance relative to the in-vehicle space channel of the bridge cross beam, so that the in-vehicle space of an automobile is not occupied, and the aim of saving the in-vehicle space is fulfilled.

Description

Brake and electric drive axle thereof

Technical Field

The utility model relates to the technical field of auto-parts, especially, relate to a brake and electric drive axle thereof.

Background

The electric drive axle of the new energy automobile comprises an axle beam and a drum brake connected to the axle beam, wherein the drum brake comprises a support, a brake drum arranged in the support, a brake shoe arranged in an inner cavity of the brake drum, a cam shaft, an adjusting arm and a brake air chamber for providing power, one end of the cam shaft is provided with a cam abutting against the brake shoe, the other end of the cam shaft is connected with a driven part of the adjusting arm, the adjusting arm is positioned at the inner side of the support, namely when the support is arranged on the axle beam, the adjusting arm is positioned in a channel corresponding to an in-vehicle space of the axle beam, in order to provide power for the adjusting arm, a push rod of the brake air chamber is required to be connected with a connecting part of the adjusting arm after being aligned, the brake air chamber is arranged on the axle beam, when the adjusting arm is driven by the brake air chamber to rotate, the cam is driven to rotate, the rotating cam drives the brake shoe to be opened, so that the purpose of braking the automobile wheel is realized, however, since the adjusting arm is disposed in the passage of the bridge beam and the push rod is disposed at the center of the brake chamber, when the push rod of the brake chamber is connected to the adjusting arm, the brake chamber is also disposed in the passage of the bridge beam, which results in a large space occupied by the vehicle and is not favorable for reasonable utilization of space.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a brake and an electric drive axle thereof, which can save the space in the vehicle.

In order to achieve the above object, the present invention provides a brake, which adopts the following technical solutions:

a brake, comprising: the bracket is provided with an inner cavity and a first end surface and a second end surface which are oppositely arranged along the axial direction of the brake; a brake assembly mounted in the interior cavity; an adjustment arm connected to the brake assembly and having a driving part; the brake air chamber is arranged on the bracket and is provided with a push rod, and the push rod is positioned between the first end surface and the second end surface and is arranged at an interval with the driving part in the axial direction of the brake; the connecting mechanism is provided with a first connecting part and a second connecting part, the first connecting part is closer to the second end face than the push rod, and the second connecting part is connected with the driving part.

Furthermore, the driving portion comprises a connecting rod, the connecting rod is connected with the second connecting portion, a first rotating arm connected with the push rod extends towards the direction of the push rod from the first connecting portion, and a second rotating arm connected with the connecting rod extends towards the direction of the connecting rod from the second connecting portion.

Further, coupling mechanism includes pivot, first sleeve and second sleeve, the first end of pivot has first connecting portion, the second end has the second connecting portion, first sleeve cover is located on the first connecting portion, first telescopic periphery wall is followed the radial direction of pivot extends and has first rocking arm, second sleeve cover is located on the second connecting portion, the telescopic periphery wall of second is followed the radial direction of pivot extends and has the second rocking arm.

Furthermore, the top of the support is provided with a connecting seat in a protruding mode towards the radial direction of the brake, the connecting seat is provided with a pivot hole penetrating through the connecting seat along the axial direction of the brake, the rotating shaft is in running fit with the pivot hole, and the first sleeve and the second sleeve rotate synchronously with the rotating shaft.

Furthermore, the brake assembly comprises a cam shaft connected to the support, a driving end of the cam shaft extends out of the support and is connected with the adjusting arm, a driven end of the cam shaft is provided with a cam, and the push rod is close to the cam compared with the first end face.

Further, the driving portion comprises a connecting rod located below the push rod, the connecting rod is connected with the second connecting portion and parallel to the push rod, the push rod is connected with the second connecting portion, and when the push rod is seen from top to bottom along the axis direction perpendicular to the push rod, the projection of the push rod and the projection of the connecting rod are located on two sides of the first end face respectively.

Further, the driving portion comprises a connecting rod located below the push rod, the connecting rod is connected with the second connecting portion, the push rod is connected with the first connecting portion, and the distance between the push rod and the first end face is larger than the distance between the connecting rod and the first end face.

Further, the brake air chamber is fixed on the fixed seat, and the push rod penetrates through the fixed seat and is connected with the first connecting portion.

Furthermore, the brake device comprises a brake drum arranged in the inner cavity and a brake shoe arranged in the brake drum, wherein the driven end of the cam shaft extends into the brake drum and is provided with a cam, and the cam is abutted to the brake shoe.

The utility model also provides an electric drive axle, including the bridge crossbeam and the stopper of any one of the above-mentioned embodiments, the bridge crossbeam has first installation end and second installation end along the electric drive axle axial direction; the two brakes are respectively and fixedly connected to the end faces of the first mounting end and the second mounting end.

The beneficial effects of the utility model reside in that: the utility model discloses a stopper is through inciting somebody to action brake chamber's push rod is located between the first terminal surface of support and the second terminal surface and with the drive division is in the interval sets up in the axial direction of stopper, and through coupling mechanism with the drive division is connected, works as the support mounting in when on the bridge beam, make brake chamber for the one section distance of outwards staggering of the car inner space passageway of bridge beam to can not occupy the car inner space of car, reach the purpose of saving the car inner space.

Drawings

Fig. 1 is a perspective combination view of the brake of the present invention;

FIG. 2 is a partial exploded perspective view of FIG. 1;

FIG. 3 is a perspective view of FIG. 1 from another perspective;

fig. 4 is a perspective view illustrating the use state of fig. 1.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

it will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 4, the utility model provides a brake, the brake has two, follows through the bridge crossbeam 8 of fix with screw electric drive axle respectively on the both ends face of electric drive axle axial direction X, including support 1, install fixing base 6 on support 1, install in brake assembly 2, adjusting arm 3, brake chamber 4 and coupling mechanism 5 in support 1, adjusting arm 3 connect in brake assembly 2's one end, brake chamber 4 install in on fixing base 6, coupling mechanism 5 with adjusting arm 3 and brake chamber 4 are connected.

As shown in fig. 1 and 4, the bracket has a first end surface 13 and a second end surface 14 which are oppositely arranged along the axial direction of the brake, the first end surface 13 is an inner end surface adjacent to the vehicle body, the second end surface 14 is an outer end surface connected with a motor (not shown) of the electric drive axle, i.e. a space between the first end surface 13 and the second end surface 14 can be used for accommodating a brake air chamber. The upper portion of the bracket 1 is provided with an arc-shaped portion, the outer end surface of the arc-shaped portion is far away from the bridge cross beam 8 than the inner end surface thereof, and the outer end surface is provided with a containing hole along the axial direction X of the electric drive axle, and the containing hole forms an inner cavity 11 (as shown in fig. 2). The top of the bracket 1 is protruded with a connecting seat 12 toward the direction of the push rod 41, and the connecting seat 12 is provided with a pivot hole 121 penetrating through the connecting seat 12 along the axial direction of the camshaft 21. The fixing seat 6 is a brake chamber support and is fixed on the upper portion of the outer peripheral wall of the support 1 through screws and used for installing the brake chamber 4 on the support 1.

As shown in fig. 1 and 3, the brake assembly 2 is installed in the inner cavity 11, and includes a brake drum (not shown) installed in the inner cavity 11, a cam shaft 21, and a brake shoe 23 disposed in the brake drum, wherein a driving end 211 of the cam shaft 21 extends out of an end surface of one end of the bracket 1, a driven end of the cam shaft 21 extends into the brake drum and is provided with a cam 212, and the cam 212 abuts against the brake shoe 23.

The adjusting arm 3 is sleeved on the driving end 211, a driving portion 31 is arranged along the radial direction of the camshaft 21, and the driving portion 31 includes a connecting rod 311. The adjusting arm 3 has an outer side and an inner side which are oppositely arranged, the outer side is adjacent to the first end surface 13, the inner side is far away from the first end surface 13 than the outer side, and in the embodiment, the axis of the connecting rod 311 is perpendicular to the axis of the camshaft 21.

The brake chamber 4 is used for providing power and is mounted on the bracket 1, specifically, the brake chamber 4 is fixed on the fixing seat 6 through a screw and is located above the adjusting arm 3, the brake chamber 4 is provided with a push rod 41 arranged along the axial direction of the brake chamber 4 and used for outputting power, the push rod 41 is located between the first end surface 13 and the second end surface 14 and is arranged at an interval with the driving part 31 in the axial direction of the brake, and the bottom end of the push rod 41 penetrates through the fixing seat 6 and is connected with the connecting mechanism 5. In the present embodiment, the axis of the push rod 41 is perpendicular to the axis of the camshaft 21, and therefore, the push rod 41 is parallel to the axis of the link 311 for easy installation. Specifically, the push rod 41 is located between the first end surface 13 and the cam 212, and is closer to the cam 212 than the first end surface 13, when the bracket 1 is mounted on the bridge cross member 8, the brake chamber 4 is as far away from the first end surface 13 as possible within an allowable space range, that is, the brake chamber 4 is as far away from the vehicle interior space 7 as possible within the allowable space range, so as to achieve the purpose of saving the vehicle interior space 7. Further, in the present embodiment, in order to reduce the volume of the bracket, when the bracket 1 is mounted on the bridge beam 8, the cavity of the brake chamber 4 may be partially located above the bridge beam 8.

The connecting mechanism 5 is configured to drive the adjusting arm 3 to rotate, is rotatably connected to the bracket 1, and is located between the driving portion 31 and the push rod 41, the connecting mechanism 5 has a first connecting portion 54 and a second connecting portion 55 (as shown in fig. 1), the first connecting portion 54 is closer to the second end surface 14 than the second connecting portion 55 and is connected to the push rod 41, the second connecting portion 55 is connected to the driving portion 31, that is, the adjusting arm 3 and the brake chamber 4 are connected by the connecting mechanism 5, so that the brake chamber 4 can be shifted outward by a distance relative to the first end surface 13, when the bracket 1 is mounted on the bridge beam 8, the brake chamber 4 is shifted outward by a distance relative to an in-vehicle space channel (not numbered) of the bridge beam 8, where the in-vehicle space channel corresponds to an in-vehicle space position 7, thereby not occupying the space in the automobile and achieving the purpose of saving the space in the automobile.

Specifically, the link 311 is connected to the second connecting portion 55, the push rod 41 is connected to the first connecting portion 54, and the distance between the push rod and the first end surface 13 is greater than the distance between the link 311 and the first end surface 13. More specifically, as viewed from above in a direction perpendicular to the axial direction of the push rod 41, the projection of the push rod 41 and the projection of the link 311 are located on both sides of the first end surface 13, respectively, and the position of the push rod 41 is set so that the brake chamber 4 is disposed as far as possible from the vehicle interior space 7 within an allowable spatial range.

As shown in fig. 1 and 2, the connecting mechanism 5 includes a rotating shaft 51, the first end of the rotating shaft 51 has the first connecting portion 54, the second end has the second connecting portion 55, the first connecting portion 54 and the second connecting portion 55 are respectively provided with a plurality of key slots (not numbered), the rotating shaft 51 is rotatably matched with the pivot hole 121, the first end and the second end of the rotating shaft 51 are respectively exposed out of two ends of the pivot hole 121, the first end is an outer end of the connecting mechanism 5, and an inner end of the second end connecting mechanism 5 is far away from the push rod 41 than an outer end.

The connecting mechanism 5 further includes a first sleeve 52 and a second sleeve 53, the first sleeve 52 is sleeved on the first connecting portion 54, a plurality of key teeth (not numbered) protruding from an inner peripheral wall thereof are matched with the key grooves, a first rotating arm 521 extends from an outer peripheral wall of the first sleeve 52 along a radial direction of the rotating shaft 51 and in a direction of the push rod 41, the first rotating arm 521 is connected with the push rod 41, the second sleeve 53 is sleeved on the second connecting portion 55, a plurality of key teeth protruding from an inner peripheral wall thereof are matched with the key grooves, a second rotating arm 531 extends from an outer peripheral wall of the second sleeve 53 along the radial direction of the rotating shaft 51 and in a direction of the connecting rod 311, and the second rotating arm 531 is connected with the connecting rod 311.

When the brake air chamber drives the first rotating arm 521 to rotate through the push rod 41, the rotating shaft 51 is driven to rotate so as to drive the second rotating arm 531 to rotate, the rotating second rotating arm 531 drives the connecting rod 311 to swing and drives the driving part 31 to swing, the swinging driving part 31 drives the cam shaft 21 to swing so as to drive the cam 212 to swing, so that the brake shoe 23 is opened to abut against the inner wall of the brake drum to generate friction force, and the braking effect is achieved.

The utility model also provides an electric drive axle, including bridge crossbeam 8 and the stopper of any one of the above-mentioned embodiments, bridge crossbeam 8 has first installation end (not numbered) and second installation end (not shown) along electric drive axle axial direction X; the brake has two, two stopper respectively through screw fixed connection in first installation end and the relative terminal surface of first installation end second installation end, first installation end is the right-hand member, the second installation end is the left end.

The utility model discloses a stopper is through inciting somebody to action brake chamber's push rod is located between the first terminal surface of support and the second terminal surface and with the drive division is in the interval sets up in the axial direction of stopper, and through coupling mechanism with the drive division is connected, works as the support mounting in when on the bridge beam, make brake chamber for the one section distance of outwards staggering of the car inner space passageway of bridge beam to can not occupy the car inner space of car, reach the purpose of saving the car inner space.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A brake, characterized by: the method comprises the following steps: the bracket is provided with an inner cavity and a first end surface and a second end surface which are oppositely arranged along the axial direction of the brake; a brake assembly mounted in the interior cavity; an adjustment arm connected to the brake assembly and having a driving part; the brake air chamber is arranged on the bracket and is provided with a push rod, and the push rod is positioned between the first end surface and the second end surface and is arranged at an interval with the driving part in the axial direction of the brake; the connecting mechanism is provided with a first connecting part and a second connecting part, the first connecting part is closer to the second end face than the push rod, and the second connecting part is connected with the driving part.

2. The brake of claim 1, wherein: the driving part comprises a connecting rod, the connecting rod is connected with the second connecting part, a first rotating arm connected with the push rod extends towards the push rod from the first connecting part, and a second rotating arm connected with the connecting rod extends towards the connecting rod from the second connecting part.

3. The brake of claim 2, wherein: coupling mechanism includes pivot, first sleeve and second sleeve, the first end of pivot has first connecting portion, and the second end has the second connecting portion, first sleeve cover is located on the first connecting portion, first telescopic periphery wall is followed the radial direction of pivot extends and has first rocking arm, second sleeve cover is located on the second connecting portion, the telescopic periphery wall of second is followed the radial direction of pivot extends and has the second rocking arm.

4. A brake as claimed in claim 3, characterized in that: the top of the support is provided with a connecting seat in a protruding mode towards the radial direction of the brake, the connecting seat is provided with a pin joint hole penetrating through the connecting seat along the axial direction of the brake, the rotating shaft is in running fit with the pin joint hole, and the first sleeve and the second sleeve rotate synchronously with the rotating shaft.

5. The brake of claim 1, wherein: the brake assembly comprises a cam shaft connected to the support, the driving end of the cam shaft extends out of the support and is connected with the adjusting arm, the driven end of the cam shaft is provided with a cam, and the push rod is close to the cam compared with the first end face.

6. The brake of claim 1, wherein: the drive part comprises a connecting rod located below the push rod, the connecting rod is connected with the second connecting portion and parallel to the push rod, the push rod is connected with the second connecting portion, and when the push rod is seen from top to bottom along the axis direction perpendicular to the push rod, the projection of the push rod and the projection of the connecting rod are located on two sides of the first end face respectively.

7. The brake of claim 1, wherein: the driving part comprises a connecting rod located below the push rod, the connecting rod is connected with the second connecting part, the push rod is connected with the first connecting part, and the distance between the push rod and the first end face is larger than the distance between the connecting rod and the first end face.

8. The brake of claim 1, wherein: the brake air chamber is fixed on the fixing seat, and the push rod penetrates through the fixing seat and is connected with the first connecting portion.

9. An electric drive axle, characterized by: comprising a bridge cross member having a first mounting end and a second mounting end in the axial direction of the electric drive axle, and a brake according to any one of claims 1 to 8; the two brakes are respectively and fixedly connected to the end faces of the first mounting end and the second mounting end.