CN111994058A - Position limiting mechanism of line control braking system - Google Patents
Position limiting mechanism of line control braking system Download PDFInfo
- Publication number
- CN111994058A CN111994058A CN202010921319.3A CN202010921319A CN111994058A CN 111994058 A CN111994058 A CN 111994058A CN 202010921319 A CN202010921319 A CN 202010921319A CN 111994058 A CN111994058 A CN 111994058A
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- China
- Prior art keywords
- brake
- master cylinder
- ball screw
- spring
- guide
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
Abstract
The invention discloses a position limiting mechanism of a line control brake system, which comprises a brake master cylinder and a ball screw arranged at one end of the brake master cylinder and used for driving the brake master cylinder, and is characterized in that the ball screw is connected with a motor used for driving the ball screw to rotate, one end of the ball screw, which is far away from the brake master cylinder, is provided with a limiting part, and the limiting part comprises a point contact switch which is coaxially arranged with the ball screw. The response is fast, safe and reliable, and the energy consumption in the braking process is reduced.
Description
Technical Field
The invention relates to the technical field of automobile braking, in particular to a position limiting mechanism of a line control braking system.
Background
Automatic driving is a necessary trend in the development of the automobile industry, while an execution system is a key part in the industry chain, and a chassis brake system is an important component of the execution system. The automobile chassis brake system technology is developed from single traditional hydraulic and pneumatic braking to an electric control and hydraulic combination mode integrating multiple brake functions, and in order to realize stability of an automobile body structure and extension of an intelligent driving function, the brake-by-wire is a long-term development trend of the automobile brake technology and can deeply integrate an intelligent driving function module. The existing line control brake system drives a transmission mechanism to push a brake master cylinder to generate pressure by depending on a motor in a pressure building process, and returns the transmission mechanism by depending on a return spring in a pressure removing process. In order to generate enough elastic force, a part of the brake-by-wire system comprises a plurality of return springs, so that the structure is complex, and pushing resistance is formed.
Disclosure of Invention
The present invention is directed to a position limiting mechanism of a brake-by-wire system, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a line control braking system position is injectd mechanism, including the brake master cylinder and set up in brake master cylinder one end is used for driving the ball of brake master cylinder, its characterized in that, be connected with on the ball and be used for driving ball pivoted motor, ball keeps away from the one end of brake master cylinder is equipped with spacing portion, spacing portion include with the coaxial point contact switch who arranges of ball.
As a further scheme of the invention: the brake system also comprises a mounting plate fixedly arranged relative to the brake master cylinder.
As a further scheme of the invention: the motor is fixedly connected to the mounting plate.
As a further scheme of the invention: one end of the mounting plate, which is far away from the brake master cylinder, is fixedly connected with an anti-rotation support, and the ball screw is connected with the anti-rotation support in a sliding manner.
As a further scheme of the invention: the side of ball is equipped with the direction boss, prevent changeing the guide way of offering on the support with the boss corresponds arrangement of direction.
As a further scheme of the invention: the section of the guide boss is circular, groove-shaped or rectangular.
As a further scheme of the invention: the limiting part comprises a base and a guide seat in sliding connection with the base, and a spring is arranged between the guide seat and the base.
As a further scheme of the invention: one end of the spring is fixedly connected with the base or one end of the spring is fixedly connected with the guide seat or two ends of the spring are respectively fixedly connected with the spring and the guide seat.
As a further scheme of the invention: the point contact switch is fixedly connected to one end, far away from the spring, of the guide seat.
As a further scheme of the invention: one end of the base, which is far away from the point contact switch, is fixedly connected with the ball screw or the anti-rotation support.
Compared with the prior art, the invention has the beneficial effects that:
1. the ball screw and the motor are arranged, the motor is used as a power source for stretching of the brake master cylinder, power is transmitted through the ball screw, and then the piston of the brake master cylinder can be driven to contract so as to achieve the purposes of building brake oil pressure and releasing the brake oil pressure;
2. this application is through setting up the point touch switch, fixes a position and restrict the lead screw position of return stroke in-process, and it is excessive to guarantee that the lead screw can not the return, causes the damage to the system, still is equipped with the spring in addition between point touch switch and prevent changeing support or lead screw, through the rigid impact that the inertia of spring absorption system produced, has guaranteed the safety of point touch switch, has improved the life of point touch switch.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a sectional view of a limiting plate according to the embodiment;
in the figure: 1-limiting part, 2-ball screw, 3-motor, 4-brake master cylinder, 5-mounting plate, 6-guide boss, 7-anti-rotation support, 8-point contact switch, 9-guide seat, 10-spring and 11-base.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Example 1
Referring to fig. 1-2, in an embodiment of the present invention, a position limiting mechanism of a line control brake system includes a brake master cylinder 4, a ball screw 2, a mounting plate 5, a motor 3, and a limiting portion 1, where the brake master cylinder 4 is connected to the ball screw 2, the ball screw 2 is in power connection with the motor 3, the motor 3 is fixedly connected to the mounting plate 5, the mounting plate 5 and the brake master cylinder 4 are relatively fixedly disposed, and further the ball screw 2 can be driven by the motor 3 to rotate, and further the ball screw 2 drives a piston of the brake master cylinder 4 to extend and retract, so as to establish a brake pressure or cancel the brake pressure.
An anti-rotation bracket 7 is fixedly connected to one end of the mounting plate 5 far away from the brake master cylinder 4, the anti-rotation bracket 7 is of a U-shaped structure, one end of an opening of the anti-rotation bracket 7 is fixedly connected with the mounting plate 5, the other end of the opening is sleeved at the outer end of the ball screw 2, a guide boss 6 is arranged on the outer side of the ball screw 2, a guide groove is arranged at the position of the anti-rotation bracket 7 close to the guide boss 6, the guide boss 6 is connected in the guide groove in a, thereby guiding the reciprocating motion of the ball screw 2, and simultaneously restricting the motion form of the ball screw 4 through the guide groove, the screw rod can only slide to prevent the screw rod from idling, the section structure of the guide boss 6 is circular or groove-shaped or rectangular, the shape of the guide groove is adapted to the section shape of the guide boss 6, in this embodiment, the cross-sectional structure of the guide boss 6 is circular, and the guide boss 6 and the screw rod are formed by welding.
Spacing portion 1 includes guide holder 9 of base 11 and sliding connection in base 11, guide holder 9 and base 11 sliding connection, is equipped with spring 10 between guide holder 9 and the base 11, and spring 10's both ends have at least one end to be fixed connection structure, and in this embodiment, spring and base 11 fixed connection, guide holder 9 keep away from the one end fixed connection point contact switch 8 of base 11, and base 11 fixed connection is in the lead screw tip.
When the invention is used, when braking is needed, the vehicle brake-by-wire system sends a braking signal, the motor 3 rotates to drive the ball screw 2 to rotate and push the brake master cylinder 4, and then the brake master cylinder 4 contracts to establish brake oil pressure so as to provide braking capability, when braking is needed to be relieved, the motor 3 overturns and drives the ball screw 2 to reversely rotate, the piston of the brake master cylinder 4 is driven to extend through the reversely rotating ball screw 2 so as to relieve the brake oil pressure, when the piston extends to a limit position, the point contact switch 8 in the limiting part 1 contacts the anti-rotation bracket 7 so as to send a position signal, the motor 3 stops rotating, and the braking is successfully released, so that the safety of the screw rod in the process of relieving the braking can be ensured, in addition, because a spring is arranged between the point contact switch 8 and the base 11, the rigid impact of the system inertia of the motor 3 and the ball screw 2 on the point contact switch 8 after the motor 3, the safety and the stability of the system are ensured.
Example 2
Referring to fig. 1-2, in an embodiment of the present invention, a position limiting mechanism of a line control brake system includes a brake master cylinder 4, a ball screw 2, a mounting plate 5, a motor 3, and a limiting portion 1, where the brake master cylinder 4 is connected to the ball screw 2, the ball screw 2 is in power connection with the motor 3, the motor 3 is fixedly connected to the mounting plate 5, the mounting plate 5 and the brake master cylinder 4 are relatively fixedly disposed, and further the ball screw 2 can be driven by the motor 3 to rotate, and further the ball screw 2 drives a piston of the brake master cylinder 4 to extend and retract, so as to establish a brake pressure or cancel the brake pressure.
An anti-rotation bracket 7 is fixedly connected to one end of the mounting plate 5 far away from the brake master cylinder 4, the anti-rotation bracket 7 is of a U-shaped structure, one end of an opening of the anti-rotation bracket 7 is fixedly connected with the mounting plate 5, the other end of the opening is sleeved at the outer end of the ball screw 2, a guide boss 6 is arranged on the outer side of the ball screw 2, a guide groove is arranged at the position of the anti-rotation bracket 7 close to the guide boss 6, the guide boss 6 is connected in the guide groove in a, thereby guiding the reciprocating motion of the ball screw 2, and simultaneously restricting the motion form of the ball screw 4 through the guide groove, the screw rod can only slide to prevent the screw rod from idling, the section structure of the guide boss 6 is circular or groove-shaped or rectangular, the shape of the guide groove is adapted to the section shape of the guide boss 6, in this embodiment, the cross-sectional structure of the guide boss 6 is a groove shape, and the guide boss 6 and the screw rod are an integral structure.
Spacing portion 1 includes guide holder 9 of base 11 and sliding connection in base 11, guide holder 9 and base 11 sliding connection, is equipped with spring 10 between guide holder 9 and the base 11, and spring 10's both ends have at least one end to be fixed connection structure, and in this embodiment, spring and guide holder 9 fixed connection, the one end fixed connection point touch switch 8 of base 11 is kept away from to guide holder 9, and base 11 fixed connection is in the one end that prevents changeing support 7 and be close ball 2.
When the brake release device is used, when braking is needed, a brake-by-wire system of a vehicle sends a brake signal, the motor 3 rotates to drive the ball screw 2 to rotate and push the brake master cylinder 4, and then the brake master cylinder 4 contracts to establish brake oil pressure so as to provide brake capacity, when braking is needed to be released, the motor 3 overturns and drives the ball screw 2 to reversely rotate, the piston of the brake master cylinder 4 is driven to extend through the reversely rotating ball screw 2 so as to release the brake oil pressure, when the piston extends to a limit position, the top end of the screw is in contact with the point contact switch 8, slight pressure is applied to the point contact switch 8, and then the point contact switch 8 sends a position signal, the motor 3 stops rotating, and the brake release is successful, so that the safety of the screw in the brake release process can be ensured, in addition, because a spring is arranged between the point contact switch 8 and the base 11, the safety of the screw after the, The system inertia of the ball screw 2 forms rigid impact on the point contact switch 8, so that the safety and the stability of the system are ensured.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a line control braking system position is injectd mechanism, including brake master cylinder (4) and set up in brake master cylinder (4) one end is used for driving ball (2) of brake master cylinder (4), its characterized in that, be connected with on ball (2) and be used for driving ball (2) pivoted motor (3), ball (2) are kept away from the one end of brake master cylinder (4) is equipped with spacing portion (1), spacing portion (1) including with ball (2) coaxial arrangement's point contact switch (8).
2. A brake-by-wire position-defining mechanism as defined in claim 1 further comprising a mounting plate (5) fixedly disposed relative to the master cylinder (4).
3. A brake-by-wire position defining mechanism as defined in claim 2 wherein said motor (3) is fixedly attached to said mounting plate (5).
4. A position limiting mechanism of a brake-by-wire system according to claim 2, characterized in that an end of the mounting plate (5) far away from the brake master cylinder (4) is fixedly connected with an anti-rotation bracket (7), and the ball screw (2) is slidably connected with the anti-rotation bracket (7).
5. A position limiting mechanism of a wire control brake system according to claim 4, wherein a guide boss (6) is provided at a side of the ball screw (2), and a guide groove corresponding to the guide boss (6) is provided on the anti-rotation bracket (7).
6. A brake-by-wire system position defining mechanism according to claim 5, characterized in that the cross-section of the guide boss (6) is circular or groove-shaped or rectangular.
7. A position limiting mechanism of a line control brake system according to claim 4, characterized in that the limiting part (1) comprises a base (11) and a guide seat (9) connected with the base (11) in a sliding manner, and a spring (10) is arranged between the guide seat (9) and the base (11).
8. A wire control brake system position limiting mechanism according to claim 7, characterized in that one end of the spring (10) is fixedly connected with the base (11) or one end of the spring (10) is fixedly connected with the guide seat (9) or two ends of the spring (10) are respectively fixedly connected with the spring (10) and the guide seat (9).
9. A brake-by-wire system position defining mechanism according to claim 7, characterized in that the point contact switch (8) is fixedly connected to the end of the guide block (9) remote from the spring (10).
10. A brake-by-wire system position limiting mechanism according to claim 1, characterized in that the end of the base (11) far away from the point contact switch (8) is fixedly connected with the ball screw (2) or the anti-rotation bracket (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010921319.3A CN111994058A (en) | 2020-09-04 | 2020-09-04 | Position limiting mechanism of line control braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010921319.3A CN111994058A (en) | 2020-09-04 | 2020-09-04 | Position limiting mechanism of line control braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111994058A true CN111994058A (en) | 2020-11-27 |
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ID=73468300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010921319.3A Pending CN111994058A (en) | 2020-09-04 | 2020-09-04 | Position limiting mechanism of line control braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111994058A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130082514A1 (en) * | 2011-09-29 | 2013-04-04 | Hitachi Automotive Systems, Ltd. | Brake control device |
| CN103171531A (en) * | 2013-03-19 | 2013-06-26 | 吉林大学 | Active brake pedal travel simulator and control method thereof |
| CN105715707A (en) * | 2016-04-05 | 2016-06-29 | 郧县金龙工贸有限公司 | Electric pushing rod-type control device for automobile disk brake |
| CN106314150A (en) * | 2016-08-08 | 2017-01-11 | 袁海江 | Security device for avoiding driver of motor vehicle falsely using accelerator as brake |
| CN108263357A (en) * | 2016-12-30 | 2018-07-10 | 比亚迪股份有限公司 | Brake and braking system and vehicle |
| CN109795466A (en) * | 2019-01-31 | 2019-05-24 | 浙江亚太机电股份有限公司 | A kind of vehicle electronic brake power device and electronic parking braking system of vehicle |
-
2020
- 2020-09-04 CN CN202010921319.3A patent/CN111994058A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130082514A1 (en) * | 2011-09-29 | 2013-04-04 | Hitachi Automotive Systems, Ltd. | Brake control device |
| CN103171531A (en) * | 2013-03-19 | 2013-06-26 | 吉林大学 | Active brake pedal travel simulator and control method thereof |
| CN105715707A (en) * | 2016-04-05 | 2016-06-29 | 郧县金龙工贸有限公司 | Electric pushing rod-type control device for automobile disk brake |
| CN106314150A (en) * | 2016-08-08 | 2017-01-11 | 袁海江 | Security device for avoiding driver of motor vehicle falsely using accelerator as brake |
| CN108263357A (en) * | 2016-12-30 | 2018-07-10 | 比亚迪股份有限公司 | Brake and braking system and vehicle |
| CN109795466A (en) * | 2019-01-31 | 2019-05-24 | 浙江亚太机电股份有限公司 | A kind of vehicle electronic brake power device and electronic parking braking system of vehicle |
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Application publication date: 20201127 |