CN218494068U - Dry electronic brake for automobile - Google Patents
Dry electronic brake for automobile Download PDFInfo
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- CN218494068U CN218494068U CN202222771774.7U CN202222771774U CN218494068U CN 218494068 U CN218494068 U CN 218494068U CN 202222771774 U CN202222771774 U CN 202222771774U CN 218494068 U CN218494068 U CN 218494068U
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- brake
- opening
- drum
- brake shoe
- rotating shaft
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Abstract
The utility model belongs to the technical field of automobile braking, and relates to an automobile dry-type electronic brake, which comprises a brake drum with one end fixedly connected with a rim, wherein the brake drum is cylindrical, a brake shoe is arranged in the brake drum, an opening is arranged on the brake shoe, and friction plates fixedly attached to the excircle of the brake shoe are arranged on the two sides of the opening; and a driving block is arranged in the opening, is connected with an electric driving mechanism and rotates under the driving of the electric driving mechanism to prop the brake shoe open along the opening, so that friction plates on two sides of the brake shoe are in friction contact with the inner side of the brake drum, and the brake is realized. The utility model provides a stopper adopts the drum brake structure for electronic brake, can with the cooperation of car ABS, ESP, adopts the electric drive mode, has cancelled brake fluid, the cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of the car braking, a car dry-type electronic brake is related to.
Background
The automobile is used as a ground traffic tool, and the three basic functions of driving, steering and parking are realized, wherein the parking function is realized by a brake system of the automobile. The safety, energy conservation and environmental protection are three main subjects of future development of automobiles, and a braking system is taken as an important component of the automobile and directly influences the driving safety of the automobile. With the development of modern science and technology, the requirements of consumers on the safety performance of automobiles are increasingly improved, and automobile braking systems are continuously developed. The existing automobile brake system is realized by implanting ABS (anti-lock brake system), TCS (traction control system), ESP (electronic stability program) and the like based on the traditional hydraulic brake system.
In a traditional hydraulic or pneumatic braking system, the obvious defects of complex gas-liquid pipelines, difficult maintenance, complex arrangement structure, slow braking dynamic response, lower braking comfort performance and the like exist. For example, in a hydraulic brake system, a rebound vibration phenomenon of a brake pedal occurs when an anti-lock brake system is operated, which affects a brake comfort performance. For another example, since the brake pedal mechanism is directly connected to the brake actuator and the brake transmission device, the impact force generated during the vehicle collision is directly transmitted to the cab through the brake system, which seriously affects the safety performance of the vehicle. For another example, because the conventional hydraulic brake system employs the components of the conventional hydraulic brake system, such as the vacuum brake booster, the brake master cylinder, the oil reservoir, etc., which have a large volume, the conventional hydraulic brake system has the problems of complicated structure and assembly, large volume, and difficult maintenance, and because the system is provided with the hydraulic brake pipeline and the brake fluid which are connected with the corresponding components, the hydraulic oil needs to be replaced periodically and whether the hydraulic oil leaks or not needs to be checked periodically.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a dry electronic brake for an automobile, which solves the above-mentioned drawbacks of the conventional hydraulic or pneumatic brake system.
In order to achieve the above purpose, the utility model provides a following technical scheme:
an automobile dry-type electronic brake comprises a brake drum, wherein one end of the brake drum is fixedly connected with a rim, the brake drum is cylindrical, a brake shoe is arranged in the brake drum, an opening is formed in the brake shoe, and friction plates fixedly attached to the excircle of the brake shoe are arranged on two sides of the opening; and a driving block is arranged in the opening, is connected with an electric driving mechanism and rotates under the driving of the electric driving mechanism to prop the brake shoe open along the opening, so that friction plates on two sides of the brake shoe are in friction contact with the inner side of the brake drum, and the brake is realized.
Further, the electric drive mechanism comprises a drive motor, a speed reducer, a rotating shaft and a brake bottom plate; the brake bottom plate is arranged on one side, far away from the rim, of the brake drum and is coaxially arranged with the brake drum, the driving motor is connected with the speed reducer, one end of the rotating shaft is connected with an output shaft of the speed reducer, and the other end of the rotating shaft penetrates through the brake bottom plate and is fixedly connected with the driving block; the driving motor drives the driving block to rotate through the rotating shaft, so that the opening is opened.
Furthermore, a positioning guide hole is formed in the brake bottom plate, and the rotating shaft is arranged in the positioning guide hole.
Further, the rotating shaft is connected with an output shaft of the speed reducer through a spline.
Further, the driving blocks are in contact with two side surfaces of the opening, and the length of the driving blocks is larger than the width of the opening.
Further, the clearance between the friction plate and the brake drum is 0.1-0.3 mm. There is no central positioning mechanism between the brake shoe and the brake drum, the friction plate and the brake drum are matched in small gap, when the brake shoe is in non-braking state and the friction plate is contacted with the brake drum due to deviation, the brake shoe is automatically returned to central position by using the contact force between the brake drum and the friction plate when rotating, and the friction plate and the brake drum are kept in separated state. The brake shoe does not need to be centrally fixed in position.
Furthermore, the brake shoe comprises an elastic sheet and two supporting plates, wherein the elastic sheet is circular, the two supporting plates are fixedly arranged on the inner side of the elastic sheet, and the opening is formed between the two supporting plates.
The utility model provides an automobile dry-type electronic brake, during the braking, driving motor drives the brake shoe through the drive block and opens to both ends, makes the friction disc press on rotatory brake drum, and the brake shoe is under the spacing of drive block and pivot, and circumference is fixed, and friction braking is gone with brake drum to the friction disc; when the brake is cancelled, the driving motor rotates reversely, the rotating shaft rotates reversely, the brake shoe returns, and the brake is eliminated.
The beneficial effects of the utility model reside in that:
1. the utility model provides a stopper adopts the drum brake structure for electronic brake, can with the cooperation of car ABS, ESP, adopts the electric drive mode, has cancelled brake fluid, the cost is reduced.
2. The utility model discloses in, the brake shoe need not to carry out the center positioning alone. When the friction plate is contacted with the brake drum due to the deviation of the brake shoe in a non-braking state, the brake shoe automatically returns to the central position by utilizing the contact force between the brake drum and the friction plate when the brake drum rotates, and the friction plate and the brake drum are kept in a separated state.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural view of an automotive dry electronic brake according to the present invention;
FIG. 2 is a schematic view of the present invention showing the dry type electronic brake of the vehicle in an unbraked state;
FIG. 3 is a cross-sectional view taken at C-C of FIG. 2;
FIG. 4 is a schematic view of a brake shoe according to the present invention;
FIG. 5 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic view of a brake drum according to the present invention;
fig. 7 is a schematic diagram of the braking state of the dry-type electronic brake of the vehicle according to the present invention.
Reference numerals are as follows: 1-a brake drum; 2-friction plate; 3-brake shoe; 4-a drive block; 5-braking the bottom plate; 6-driving a motor; 7-a reducer; 8-a rotating shaft; 31-an opening; 32-an elastic sheet; 33-support plate.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples can be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1 to 7, the automotive dry electronic brake includes a brake drum 1 having one end fixedly connected to a rim through a bolt, the brake drum 1 being cylindrical, a brake shoe 3 installed in the brake drum 1, the brake shoe 3 having an opening 31, friction plates 2 fixedly attached to an outer circumference of the brake shoe 3 installed at both sides of the opening 31; the driving block 4 is arranged in the opening 31, the driving block 4 is connected with the electric driving mechanism and driven by the electric driving mechanism to rotate, the brake shoe 3 is spread along the opening 31, and the friction plates 2 on two sides of the brake shoe 3 are in friction contact with the inner side of the brake drum 1 to realize braking.
Wherein, the electric drive mechanism comprises a drive motor 6, a speed reducer 7, a rotating shaft 8 and a brake bottom plate 5; the brake bottom plate 5 is fixedly arranged on the vehicle body, is positioned on one side of the brake drum 1, which is far away from the wheel rim, and is coaxially arranged with the brake drum 1; the driving motor 6 is connected with the speed reducer 7, one end of the rotating shaft 8 is connected with an output shaft of the speed reducer 7 through a spline, and the other end of the rotating shaft penetrates through a positioning guide hole in the braking bottom plate 5 and is fixedly connected with the driving block 4; the driving motor 6 drives the driving block 4 to rotate through the rotating shaft 8, thereby opening the opening 31.
Wherein the driving block 4 is in contact with both sides of the opening 31, and the length of the driving block 4 is greater than the width of the opening 31. The clearance between the friction plate 2 and the brake drum 1 is controlled to be 0.1-0.3 mm. The brake shoe 3 includes an elastic piece 32 and two support plates 33, the elastic piece 32 is circular, the two support plates 33 are fixedly mounted on the inner side of the elastic piece 32, and an opening 31 is formed between the two support plates 33. During braking, the driving block 4 is used for opening the elastic sheet 32 through the supporting plate 33.
The working principle is as follows:
during braking, the driving motor 6 drives the brake shoe 3 to be opened towards two ends through the driving block 4, so that the friction plate 2 is pressed on the rotating brake drum 1, the brake shoe 3 is circumferentially fixed under the limit of the driving block 4 and the rotating shaft 8, and the friction plate 2 and the brake drum 1 are subjected to friction braking; when the brake is cancelled, the driving motor 6 rotates reversely, the rotating shaft 8 rotates reversely, the brake shoe 3 returns, and the brake is eliminated. There is no central positioning mechanism between the brake shoe 3 and the brake drum 1, the friction plate 2 and the brake drum 1 adopt small clearance fit, when the brake shoe 3 is deviated to cause the friction plate 2 to contact with the brake drum 1 in the non-braking state, the brake shoe 3 automatically returns to the central position by using the contact force between the brake drum 1 and the friction plate 2 when rotating, and the friction plate 2 and the brake drum 1 keep a separation state.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (7)
1. The utility model provides an automobile dry-type electronic brake, includes one end and rim fixed connection's brake drum, its characterized in that: the brake drum is cylindrical, a brake shoe is arranged in the brake drum, an opening is formed in the brake shoe, and friction plates fixedly attached to the outer circle of the brake shoe are arranged on two sides of the opening; and a driving block is arranged in the opening, is connected with an electric driving mechanism and rotates under the driving of the electric driving mechanism, and props up the brake shoe along the opening, so that friction plates on two sides of the brake shoe are in friction contact with the inner side of the brake drum, and the brake is realized.
2. The automotive dry electronic brake of claim 1, wherein: the electric driving mechanism comprises a driving motor, a speed reducer, a rotating shaft and a braking bottom plate; the brake bottom plate is arranged on one side, far away from the rim, of the brake drum and is coaxially arranged with the brake drum, the driving motor is connected with the speed reducer, one end of the rotating shaft is connected with an output shaft of the speed reducer, and the other end of the rotating shaft penetrates through the brake bottom plate and is fixedly connected with the driving block; the driving motor drives the driving block to rotate through the rotating shaft, so that the opening is opened.
3. The automotive dry electronic brake of claim 2, wherein: the braking bottom plate is provided with a positioning guide hole, and the rotating shaft is arranged in the positioning guide hole.
4. The automotive dry electronic brake of claim 2, wherein: the rotating shaft is connected with an output shaft of the speed reducer through a spline.
5. The automotive dry electronic brake of claim 1, wherein: the driving block is in contact with two side surfaces of the opening, and the length of the driving block is larger than the width of the opening.
6. The automotive dry electronic brake of claim 1, wherein: the clearance between the friction plate and the brake drum is 0.1-0.3 mm.
7. The automotive dry electronic brake of claim 1, wherein: the brake shoe comprises an elastic sheet and two supporting plates, wherein the elastic sheet is circular, the two supporting plates are fixedly arranged on the inner side of the elastic sheet, and the opening is formed between the two supporting plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222771774.7U CN218494068U (en) | 2022-10-20 | 2022-10-20 | Dry electronic brake for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222771774.7U CN218494068U (en) | 2022-10-20 | 2022-10-20 | Dry electronic brake for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218494068U true CN218494068U (en) | 2023-02-17 |
Family
ID=85194120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222771774.7U Active CN218494068U (en) | 2022-10-20 | 2022-10-20 | Dry electronic brake for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218494068U (en) |
-
2022
- 2022-10-20 CN CN202222771774.7U patent/CN218494068U/en active Active
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