CN211995527U - Electronic power-assisted brake actuator with pedal power feedback - Google Patents
Electronic power-assisted brake actuator with pedal power feedback Download PDFInfo
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- CN211995527U CN211995527U CN202020455751.3U CN202020455751U CN211995527U CN 211995527 U CN211995527 U CN 211995527U CN 202020455751 U CN202020455751 U CN 202020455751U CN 211995527 U CN211995527 U CN 211995527U
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Abstract
The utility model relates to a take footboard electric power feedback's electron helping hand brake executor, its characterized in that: the brake system comprises an outer shell, a motor power-assisted module, a mechanical brake module and a brake feedback module; when the pedal plate is stepped down, the push rod moves forwards together with the magnet, and when the displacement sensor chip detects that a displacement signal is output, the motor power-assisted module pushes the displacement sensor to move forwards, and meanwhile, the displacement sensor is also a stressed part and transmits the thrust from the screw rod, so that the thrust is transmitted to the ejector rod; when the motor power-assisted brake is performed, the screw rod pushes the displacement sensor to move, the brake pedal can be driven to move along with the motor power-assisted brake, when the motor power-assisted module fails, the mechanical brake module is still effective, the brake pedal is stepped on by a foot to drive the push rod, the acting force is applied to the displacement sensor, and then the acting force is transmitted to the ejector rod, so that the mechanical non-power-assisted brake is realized, the vehicle can be ensured to be reliably decelerated and stopped, and the safety of the vehicle is ensured.
Description
Technical Field
The utility model relates to an automobile brake technical field especially relates to a take electron helping hand brake executor of footboard electric power feedback.
Background
The motor vehicle brake system usually depends on an engine air inlet system to provide a vacuum source for a brake booster, so that the brake booster is pressurized and assisted for a brake master cylinder, the brake response speed is improved for brake operators, the vehicle brake distance is shortened, and the vehicle safety is improved. However, such a mechanical booster cannot provide sufficient braking assistance to the brake system without a vacuum level or without an insufficient vacuum level.
In order to solve the problem that the above-mentioned helping hand is not enough, the utility model provides an electronic helping hand braking scheme is proposed, replaces vacuum helping hand through the motor helping hand promptly, and this kind of electronic booster is when the vehicle braking, and its helping hand value size can be regulated and control through the output torque of motor.
In order to realize the function of recovering the braking energy, a common structure is that a section of idle stroke is designed between a master cylinder and a booster, the idle stroke can ensure that when a driver steps on a brake pedal, the pedal force cannot be transmitted to the master cylinder, and then the idle stroke is matched with a driving motor on a vehicle to provide reverse induced electromotive force resistance to realize regenerative braking and energy recovery. When the gap design is used for realizing regenerative braking, a section of idle stroke needs to be eliminated, when the section of idle stroke is stepped, the force of a brake pedal is very small, the feeling of the brake pedal is very poor, and meanwhile, an unsafe feeling can be brought to a driver.
A plurality of completely decoupled electronic hydraulic power-assisted braking systems appear in the market at present and are used for solving the problem of brake pedal feeling in the prior art, but when the motor fails in power assistance, a pedal push rod needs to overcome a long section of idle stroke to transmit pedal force to a brake master cylinder, and the structure delays the brake response rate to a certain extent, so that the braking distance of a vehicle is lengthened, and the safety of the vehicle stroke is reduced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a take footboard electric power feedback's electron helping hand brake executor can solve the relevant problem in the above-mentioned background.
In order to solve the technical problem, the utility model adopts the technical scheme that: an electronic power-assisted brake actuator with pedal power feedback is connected to a brake master cylinder and drives a compression piston in the brake master cylinder to generate brake pressure; the innovation points are as follows: the brake system comprises an outer shell, a motor power-assisted module, a mechanical brake module and a brake feedback module;
a brake master cylinder is arranged at one end of the outer shell, and the other end of the outer shell is connected with a brake pedal;
the motor power assisting module comprises a driving motor, a transmission gear pair, a nut and a screw rod, wherein the driving motor is arranged on the outer shell, a transmission shaft of the driving motor extends into the outer shell, and a motor control unit is arranged on the driving motor; the output end of the driving motor is connected with the nut through a transmission gear pair to drive the nut to rotate; the outer wall of the nut is provided with an external spline matched with the transmission gear pair, and the nut can be driven to rotate by the transmission gear pair or horizontally move along the axis direction of the nut; the inner wall of the nut is provided with a transmission thread; the screw rod is matched with the transmission thread on the inner wall of the nut, and the screw rod moves along the transmission thread of the nut in the horizontal direction under the drive of the drive motor; the screw rod is provided with a through hole along the axis direction;
the mechanical brake module comprises a push rod and an ejector rod; one end of the push rod extends out of the outer shell and is connected with a brake pedal, the other end of the push rod penetrates through a through hole of the screw rod and is connected with one end of the ejector rod, and the other end of the ejector rod is connected to the driving brake master cylinder; a displacement sensor is arranged at the joint of the push rod and the ejector rod, one end of the displacement sensor is fixedly connected to the screw rod, a sensor chip is arranged in the displacement sensor, and a magnet which is mutually inductive with the sensor chip is arranged on the end part of the push rod;
the brake feedback module comprises a feedback spring, a return spring, a spring cover, a spring seat and a push-back spring; one end of the spring cover is connected to the outer shell, the spring cover protrudes out of the outer shell, the feedback spring is arranged in the spring cover, one end of the feedback spring is connected to the outer shell, and the other end of the feedback spring is connected to the spring seat; the return spring is arranged in the feedback spring, one end of the return spring is connected to the push rod, and the other end of the return spring is connected to the screw rod; the spring seat is nested in the spring cover, the edge of the spring seat is bent outwards to be in limit fit with the convex edge of the spring cover, the edge of the spring seat is tightly propped against the spring cover by the feedback spring, the spring cover is fixedly connected with the push rod, and the push rod pushes the spring seat to drive the feedback spring to compress; the push-back spring is arranged in the outer shell, one end of the push-back spring is connected to the inner wall of the outer shell, the other end of the push-back spring is connected to the displacement sensor, the ejector rod is located in the push-back spring, and the reverse action of the push-back spring and the displacement sensor drive the screw rod and the nut which are connected with the displacement sensor to reset integrally.
Furthermore, the transmission gear pair comprises a driving gear, a linkage gear set and a driven gear; the driving gear is arranged on an output shaft of the driving motor and is driven by the driving motor; the linkage gear set is arranged in the outer shell, and the input end of the linkage gear set is connected with the driving gear; the driven gear is arranged in the outer shell, and the inner wall of the driven gear is provided with an inner spline and a nut outer wall outer spline which are matched to drive the nut to rotate or enable the nut to move along the axis direction.
Further, the linkage gear set includes first linkage gear, second linkage gear and transmission shaft, first linkage gear and the coaxial setting of second linkage gear are on the transmission shaft, the transmission shaft passes through slewing bearing and installs on the shell body, the driving gear cooperates with first linkage gear, second linkage gear cooperates with driven gear.
Furthermore, the edge of the end part, matched with the spring seat, of the spring cover is bent, and a protective bushing is nested on the bent edge.
The utility model has the advantages that:
1) when the pedal plate is stepped down, the push rod moves forwards together with the magnet, and when the displacement sensor chip detects that a displacement signal is output, the motor power-assisted module pushes the displacement sensor to move forwards, and meanwhile, the displacement sensor is also a stressed part and transmits the thrust from the screw rod, so that the thrust is transmitted to the ejector rod; when the motor power-assisted brake is performed, the screw rod pushes the displacement sensor to move, the brake pedal can be driven to move along with the motor power-assisted brake, when the motor power-assisted module fails, the mechanical brake module is still effective, the brake pedal is stepped on by a foot to drive the push rod, the acting force is applied to the displacement sensor, and then the acting force is transmitted to the ejector rod, so that the mechanical non-power-assisted brake is realized, the vehicle can be ensured to be reliably decelerated and stopped, and the safety of the vehicle is ensured.
2) The utility model discloses well feedback spring can change the spring of different rigidity, adjusts brake pedal's feedback force to satisfy the demand of different drivers or motorcycle types, also can change feedback spring pretightning force through the length size of adjustment spring housing, thereby change the initial starting force that brake pedal stepped on, can realize the brake pedal of vehicle motion mode and comfortable mode and feel the demand; the spring is very convenient to replace, and only the spring cover needs to be taken down, put in the spring and pressed again; sometimes, the vehicle types are different, the stroke of the master cylinder is different, so that the displacement of the pedal is different, and the free length of the spring needs to be adjusted to meet the vehicle requirement.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of the electronic power-assisted brake actuator with pedal power feedback of the present invention.
Fig. 2 is a schematic diagram of the braking force feedback structure of the electronic power-assisted brake actuator with pedal power feedback of the present invention.
Fig. 3 is the utility model discloses a take footboard electric power feedback's electron helping hand brake actuator's screw nut transmission structure sketch map.
Fig. 4 is the utility model discloses a displacement sensor operating principle schematic diagram of electronic helping hand brake executor of electrified footboard electric power feedback.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be completely horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An electronic power-assisted brake actuator with pedal power feedback as shown in fig. 1 to 4 is connected to a master cylinder 5, and drives a compression piston in the master cylinder to generate brake pressure; the motor brake system comprises an outer shell 1, a motor power assisting module 2, a mechanical brake module 3 and a brake feedback module 4.
One end of the outer shell 1 is provided with a master cylinder 5, and the other end of the outer shell 1 is connected with a brake pedal 6.
The motor power assisting module 2 comprises a driving motor 21, a transmission gear pair 22, a nut 23 and a screw 24, the driving motor 21 is installed on the outer shell 1, a transmission shaft of the driving motor 21 extends into the outer shell, and a motor control unit 25 is arranged on the driving motor 21; the output end of the driving motor 21 is connected with a nut 23 through a transmission gear pair 22, and drives the nut 23 to rotate; the outer wall of the nut 23 is provided with an external spline 231 matched with the transmission gear pair 22, and the nut 23 can be driven to rotate by the transmission gear pair 22 or move horizontally along the axial direction of the nut 23; the inner wall of the nut 23 is provided with a transmission thread; the screw rod 24 is matched with the transmission thread on the inner wall of the nut 23, and the screw rod 24 moves along the transmission thread of the nut 23 in the horizontal direction under the driving of the driving motor 21; the screw 24 has a through hole formed therethrough along the axial direction.
The mechanical brake module 3 comprises a push rod 31 and a push rod 32; one end of the push rod 31 extends out of the outer shell 1 and is connected with a brake pedal 6, the other end of the push rod 31 penetrates through a through hole of the screw rod 24 and is connected with one end of a push rod 32, and the other end of the push rod 32 is connected to a driving brake master cylinder 5; the displacement sensor 7 is arranged at the joint of the push rod 31 and the ejector rod 32, one end of the displacement sensor 7 is fixedly connected to the screw rod 24, a sensor chip 71 is arranged in the displacement sensor 7, and a magnet 72 which is mutually inductive with the sensor chip 71 is arranged at the end part of the push rod 24.
The brake feedback module 4 comprises a feedback spring 41, a return spring 42, a spring cover 43, a spring seat 44 and a push-back spring 45; one end of the spring cover 43 is connected to the outer shell 1, the spring cover 41 protrudes out of the outer shell, the feedback spring 41 is arranged in the spring cover, one end of the feedback spring 41 is connected to the outer shell 1, and the other end of the feedback spring 41 is connected to the spring seat 44; the return spring 42 is arranged in the feedback spring 41, one end of the return spring 42 is connected to the push rod 31, and the other end of the return spring 42 is connected to the screw 24; the spring seat 44 is nested in the spring cover 43, the edge of the spring seat 44 is bent outwards to be in limit fit with the convex edge of the spring cover 43, the edge of the spring seat 44 is tightly propped against the spring cover 43 by the feedback spring 41, the spring cover 43 is fixedly connected with the push rod 24, and the push rod 24 pushes the spring seat 44 to drive the feedback spring 41 to compress; the push-back spring 45 is arranged in the outer shell 1, one end of the push-back spring 45 is connected to the inner wall of the outer shell 1, the other end of the push-back spring 45 is connected to the displacement sensor 7, the ejector rod 32 is located in the push-back spring 45, and the reverse action of the push-back spring 45 and the displacement sensor 7 drive the screw rod 24 and the nut 23 which are connected with the displacement sensor 7 to integrally reset.
The transmission gear pair 22 comprises a driving gear 221, a linkage gear set 222 and a driven gear 223; the driving gear 221 is arranged on an output shaft of the driving motor 21 and is driven by the driving motor 21; the linkage gear set 222 is arranged in the outer shell 1, and the input end of the linkage gear set 222 is connected with the driving gear 221; the driven gear 223 is disposed in the outer housing 1, and the inner wall of the driven gear 223 is provided with a mating of an internal spline with an external spline of the outer wall of the nut 23 to drive the nut to rotate or to move the nut 23 in the axial direction.
The linkage gear set comprises a first linkage gear, a second linkage gear and a transmission shaft, the first linkage gear and the second linkage gear are coaxially arranged on the transmission shaft, the transmission shaft is arranged on the outer shell through a rotary bearing, the driving gear is matched with the first linkage gear, and the second linkage gear is matched with the driven gear.
The end edge of the spring cover 43 that engages the spring seat 44 is bent and a protective bushing 46 is fitted over the bent edge.
The utility model discloses a theory of operation is: when the pedal is stepped on, the push rod moves forwards together with the magnet, when the displacement sensor chip detects that a displacement signal is output, the motor power-assisted module pushes the displacement sensor to move forwards, and meanwhile, the displacement sensor is also a stressed part and transmits the thrust from the screw rod so as to transmit the thrust to the push rod; when the motor power-assisted brake is performed, the screw rod pushes the displacement sensor to move, the brake pedal can be driven to move along with the motor power-assisted brake, when the motor power-assisted module fails, the mechanical brake module is still effective, the brake pedal is stepped on by a foot to drive the push rod, the acting force is applied to the displacement sensor, and then the acting force is transmitted to the ejector rod, so that the mechanical non-power-assisted brake is realized, the vehicle can be ensured to be reliably decelerated and stopped, and the safety of the vehicle is ensured.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. An electronic power-assisted brake actuator with pedal power feedback is connected to a brake master cylinder and drives a compression piston in the brake master cylinder to generate brake pressure; the method is characterized in that: the brake system comprises an outer shell, a motor power-assisted module, a mechanical brake module and a brake feedback module;
a brake master cylinder is arranged at one end of the outer shell, and the other end of the outer shell is connected with a brake pedal;
the motor power assisting module comprises a driving motor, a transmission gear pair, a nut and a screw rod, wherein the driving motor is arranged on the outer shell, a transmission shaft of the driving motor extends into the outer shell, and a motor control unit is arranged on the driving motor; the output end of the driving motor is connected with the nut through a transmission gear pair to drive the nut to rotate; the outer wall of the nut is provided with an external spline matched with the transmission gear pair, and the nut can be driven to rotate by the transmission gear pair or horizontally move along the axis direction of the nut; the inner wall of the nut is provided with a transmission thread; the screw rod is matched with the transmission thread on the inner wall of the nut, and the screw rod moves along the transmission thread of the nut in the horizontal direction under the drive of the drive motor; the screw rod is provided with a through hole along the axis direction;
the mechanical brake module comprises a push rod and an ejector rod; one end of the push rod extends out of the outer shell and is connected with a brake pedal, the other end of the push rod penetrates through a through hole of the screw rod and is connected with one end of the ejector rod, and the other end of the ejector rod is connected to the driving brake master cylinder; a displacement sensor is arranged at the joint of the push rod and the ejector rod, one end of the displacement sensor is fixedly connected to the screw rod, a sensor chip is arranged in the displacement sensor, and a magnet which is mutually inductive with the sensor chip is arranged on the end part of the push rod;
the brake feedback module comprises a feedback spring, a return spring, a spring cover, a spring seat and a push-back spring; one end of the spring cover is connected to the outer shell, the spring cover protrudes out of the outer shell, the feedback spring is arranged in the spring cover, one end of the feedback spring is connected to the outer shell, and the other end of the feedback spring is connected to the spring seat; the return spring is arranged in the feedback spring, one end of the return spring is connected to the push rod, and the other end of the return spring is connected to the screw rod; the spring seat is nested in the spring cover, the edge of the spring seat is bent outwards to be in limit fit with the convex edge of the spring cover, the edge of the spring seat is tightly propped against the spring cover by the feedback spring, the spring cover is fixedly connected with the push rod, and the push rod pushes the spring seat to drive the feedback spring to compress; the push-back spring is arranged in the outer shell, one end of the push-back spring is connected to the inner wall of the outer shell, the other end of the push-back spring is connected to the displacement sensor, the ejector rod is located in the push-back spring, and the reverse action of the push-back spring and the displacement sensor drive the screw rod and the nut which are connected with the displacement sensor to reset integrally.
2. The electronic power-assisted brake actuator with pedal power feedback as claimed in claim 1, wherein: the transmission gear pair comprises a driving gear, a linkage gear set and a driven gear; the driving gear is arranged on an output shaft of the driving motor and is driven by the driving motor; the linkage gear set is arranged in the outer shell, and the input end of the linkage gear set is connected with the driving gear; the driven gear is arranged in the outer shell, and the inner wall of the driven gear is provided with an inner spline and a nut outer wall outer spline which are matched to drive the nut to rotate or enable the nut to move along the axis direction.
3. The electronic power-assisted brake actuator with pedal power feedback as claimed in claim 2, wherein: the linkage gear set comprises a first linkage gear, a second linkage gear and a transmission shaft, the first linkage gear and the second linkage gear are coaxially arranged on the transmission shaft, the transmission shaft is installed on the outer shell through a rotary bearing, the driving gear is matched with the first linkage gear, and the second linkage gear is matched with the driven gear.
4. The electronic power-assisted brake actuator with pedal power feedback as claimed in claim 1, wherein: the edge of the end part of the spring cover matched with the spring seat is bent, and a protective bushing is nested on the bent edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020455751.3U CN211995527U (en) | 2020-04-01 | 2020-04-01 | Electronic power-assisted brake actuator with pedal power feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020455751.3U CN211995527U (en) | 2020-04-01 | 2020-04-01 | Electronic power-assisted brake actuator with pedal power feedback |
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| Publication Number | Publication Date |
|---|---|
| CN211995527U true CN211995527U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020455751.3U Active CN211995527U (en) | 2020-04-01 | 2020-04-01 | Electronic power-assisted brake actuator with pedal power feedback |
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| CN (1) | CN211995527U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074962A (en) * | 2021-04-21 | 2021-07-06 | 吉林大学 | Vehicle braking and steering system integrated test bench |
| CN115285095A (en) * | 2022-09-05 | 2022-11-04 | 华为数字能源技术有限公司 | Electronic mechanical brake system and vehicle |
-
2020
- 2020-04-01 CN CN202020455751.3U patent/CN211995527U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074962A (en) * | 2021-04-21 | 2021-07-06 | 吉林大学 | Vehicle braking and steering system integrated test bench |
| CN113074962B (en) * | 2021-04-21 | 2022-06-14 | 吉林大学 | Vehicle braking and steering system integrated test bench |
| CN115285095A (en) * | 2022-09-05 | 2022-11-04 | 华为数字能源技术有限公司 | Electronic mechanical brake system and vehicle |
| CN115285095B (en) * | 2022-09-05 | 2024-03-01 | 华为数字能源技术有限公司 | Electromechanical braking system and vehicle |
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