CN212353941U - Decoupling type electric power-assisted brake device - Google Patents
Decoupling type electric power-assisted brake device Download PDFInfo
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- CN212353941U CN212353941U CN202021261821.8U CN202021261821U CN212353941U CN 212353941 U CN212353941 U CN 212353941U CN 202021261821 U CN202021261821 U CN 202021261821U CN 212353941 U CN212353941 U CN 212353941U
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Abstract
The utility model relates to an electronic helping hand arresting gear of decoupling zero formula, include the casing and set up in the foot bar assembly of casing, still including first cylinder body and the second cylinder body that is fixed in the casing, be provided with first piston chamber in the first cylinder body, the foot bar assembly is provided with the first piston that removes along first piston chamber, first piston separates first piston chamber for first chamber and second chamber, the second cylinder body is provided with second piston chamber, be provided with the second piston in the second piston chamber, the second piston separates second piston chamber for third chamber and fourth chamber, be provided with the damping booster passageway between second chamber and the third chamber, second chamber and third chamber intussuseption are filled with hydraulic oil, the second cylinder body is provided with the piece that resets with the second piston, be provided with the speed reduction transmission assembly between the brake pump ejector pin of electronic pump assembly. With the adoption of the scheme, the utility model provides a simulation tradition car is pedaled and is felt stepping on of brake, has the electronic helping hand arresting gear of decoupling zero formula that comfortable footboard felt when improving the driving braking.
Description
Technical Field
The utility model relates to an automobile braking field, concretely relates to electronic helping hand arresting gear of decoupling zero formula.
Background
The conventional braking system of the internal combustion engine automobile mostly adopts a vacuum boosting device to assist a driver to generate enough braking force, and a vacuum source is from an engine or a mechanical vacuum pump. For new energy vehicles (fuel cell vehicles and pure electric vehicles), an engine is not provided for providing a vacuum power source to provide braking assistance, and the braking force generated by manpower alone cannot meet the requirement of service braking. The electric power-assisted brake device can well meet the requirement.
In recent years, similar electric power-assisted brake devices have been successively introduced by various automobile and component manufacturers. The existing electric power-assisted brake device comprises a shell, and a pedal rod assembly, a sensing assembly, an electric power-assisted device and a brake pump assembly which are arranged on the shell, wherein one end of the pedal rod assembly is positioned at a treading end which is arranged outside the shell and is treaded by a driver, the other end of the pedal rod assembly is positioned in the shell and is used as an action sensing end, and the sensing assembly arranged in the shell is used for controlling a brake pump ejector rod of the electric power-assisted device to drive the brake pump assembly to push the corresponding depth of the brake pump assembly through the tread.
Electric power assisted brake device of decoupling zero generally directly adopts cylinder body spring simulation footboard feel, and no brake pressure is to the feedback of human body, and then influences the control of trampling dynamics, tramples too big or undersize and all can influence the driving experience. Meanwhile, the driving force which can be provided by the conventional electric booster is limited, and the brake pump assembly cannot be braked quickly and stably, and the length of the shell is too long due to the overlong length of a transmission structure between the electric booster and the brake pump assembly, so that the structure of the electric booster brake device is too overstaffed, and the electric booster brake device occupies too much space in an automobile.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a simulation tradition car is pedaled and is felt stepping on of brake, has the electronic helping hand arresting gear of decoupling zero formula that comfortable footboard felt when improving the driving brake.
In order to achieve the above purpose, the utility model provides a following technical scheme: including the casing and set up the decoupling zero braking system in the casing, decoupling zero braking system including foot bar assembly, sensing assembly, electric booster and brake pump assembly, foot bar assembly one end be located the casing outside as trample the end with the footboard linkage, the other end is located the casing and is held as axial displacement's action response, be located the casing sensing assembly through the brake pump ejector pin of trampling degree of depth control electric booster drive brake pump assembly of response action response end push the brake pump assembly and correspond the degree of depth, constitute the decoupling zero cooperation of foot bar assembly and brake pump assembly, its characterized in that: the pedal rod assembly extends into the first cylinder body and is provided with a first piston moving along the first piston cavity, the first piston separates the first piston cavity into a first cavity close to the pedal end and a second cavity far away from the pedal end, the second cylinder body is positioned on the side surface of the first cylinder body, the second cylinder body is provided with a second piston cavity along the direction parallel to the pedal direction, a second piston moving along the second piston cavity is arranged in the second piston cavity, the second piston separates the second piston cavity into a third cavity and a fourth cavity, a damping channel communicated with the second cavity and the third cavity is arranged between the first cylinder body and the second cylinder body, the sectional area of the damping channel is smaller than that of the first piston cavity, and the second cavity and the third cavity are filled with hydraulic oil, the second cylinder body is provided with a resetting piece for resetting the second piston from the fourth cavity to the third cavity, and a speed reduction transmission assembly is arranged between the electric booster and a brake pump ejector rod of the brake pump assembly.
By adopting the technical scheme, firstly, the treading end linked with the pedal moves towards the direction of the brake main pump, in the moving process, the first piston gradually conveys the hydraulic oil from the second cavity to the third cavity through the damping channel, because the sectional area of the damping channel is smaller than that of the first piston cavity, the damping feedback similar to the traditional automobile treading brake can be formed in the conveying process, the higher the treading speed is, the larger the damping feedback is, meanwhile, the resetting piece generates soft reverse thrust when the second piston is subjected to hydraulic thrust, so that the simulated treading feeling is very vivid, a driver is assisted to control the treading force, the driving experience is improved, after the treading is finished, the resetting piece resets the second piston from the fourth cavity to the third cavity, so that the hydraulic oil can flow back to the second cavity to be prepared for next treading feeling simulation, in addition, the second cylinder is arranged on the side face of the first cylinder, the length of the pedaling sense simulator is effectively shortened while the first cylinder body is guaranteed to have enough pedaling depth, and the residual space in the shell is reasonably utilized, so that the structure is more simplified and compact; the speed reduction transmission assembly effectively reduces the speed of the electric booster and improves the driving force, so that the brake pump assembly can brake quickly and stably; and the pedal lever assembly is in decoupling fit with the brake pump assembly and is arranged for application with an energy recovery function.
The utility model discloses further set up to: the reset piece is a cylinder spring positioned in the fourth cavity, and the cylinder spring is compressed between the second piston and the cavity wall of the second piston cavity.
Through adopting above-mentioned technical scheme rational utilization fourth chamber's space to be used for the installation as the cylinder body spring that resets, makes the structure more compact to can provide lasting, stable footboard power and the power that resets.
The utility model discloses further set up to: the speed reduction transmission assembly comprises a main gear, a speed reduction gear set, a pushing seat and a driving screw rod, the electric booster drives the main gear to rotate, two driving screws are arranged and arranged in a V shape with the main gear, the driving screws are provided with transmission gears which rotate synchronously, the number of the reduction gear sets is two and the reduction gear sets are respectively positioned between the main gear and the two driving screws, the reduction gear set comprises a first reduction gear and a second reduction gear which rotate synchronously, the first reduction gear is meshed with the main gear and has a diameter larger than that of the main gear, the second reduction gear is meshed with the transmission gear, the diameter of the second reduction gear is smaller than that of the transmission gear, the ejector bases are respectively provided with a matching part in threaded fit with each driving screw, and the brake pump ejector rod moves along the axial direction of the screw rod when the driving screw rod rotates to form the pushing fit with the brake pump ejector rod.
By adopting the technical scheme, the reduction gear system comprises the main gear, the reduction gear set and the transmission gear, through reducing for many times, the torque output from the main gear is greatly increased, the pushing seat matched with the thread of the driving screw is matched, the rotating torque is converted into the linear driving force, the linear driving force is greatly increased, stable transmission is provided, the brake pump assembly is ensured to brake quickly and stably, secondly, the main gear, the reduction gear set and the driving screw are arranged in a V shape, the transverse two sides in the shell, which are relatively vertical to the pedaling direction, are reasonably utilized, the length of the shell in the relative pedaling direction is shortened, and the structure is more compact.
The utility model discloses further set up to: the main gear, the first reduction gear, the second reduction gear and the transmission gear are all helical gears.
By adopting the technical scheme, each gear of the transmission assembly adopts the helical gear, and compared with the traditional gear, the helical gear has the characteristics of stable transmission, small impact, vibration and noise and the like, so that the transmission assembly is very suitable for the heavy-load application occasion of the electric power-assisted brake device, and the stable output of large driving force is ensured.
The utility model discloses further set up to: the driving screw rod is sleeved with a brake return spring which returns the ejector base to a direction far away from the brake pump assembly.
By adopting the technical scheme, the brake reset spring is additionally arranged, and the ejector base is reset in time after the braking action is finished.
The utility model discloses further set up to: the sensing assembly comprises a sensing block and a linear position sensor, the sensing block is installed at the action sensing end, and the linear position sensor is fixed on the shell and detects the treading depth and the treading speed of the action sensing end through the sensing block.
By adopting the technical scheme, the traditional sensor infers the relative movement distance of the action sensing end by detecting the gear rotating speed meshed with the periphery of the pedal lever assembly, after the pedal lever assembly is used for a certain period of time, the position of the pedal lever assembly can deviate, so that the detected relative movement distance and the actual distance generate data deviation, the pedal lever assembly is adjusted to be a linear position sensor, the linear position sensor is matched with the sensing block to detect the absolute movement distance of the pedal lever assembly, and the data deviation generated by the position deviation of the pedal lever assembly is avoided.
The utility model discloses further set up to: the foot bar assembly include along trampling the gangbar and the piston ejector pin that the direction links setting gradually, the end of trampling set up in trampling the gangbar, action response end and first piston set up in the piston ejector pin, the piston ejector pin pass the second chamber and extend to outside the first cylinder body, the piston ejector pin wear out the part of second chamber and be the movable seal cooperation between the jar wall of first cylinder body.
Through adopting above-mentioned technical scheme, divide into two parts with the foot bar, improve the equipment convenience when being convenient for with the footboard adaptation, make the structure more reasonable, the piston ejector pin extends to outside the first jar body to outside making the action response end be located first jar body, the sensing assembly can push the brake pump ejector pin that the electronic booster of trampling degree of depth control drive brake pump assembly of response action response end and push the brake pump assembly and correspond the degree of depth, also can adopt the mode of physical contact to push the brake pump ejector pin into the brake pump assembly.
The utility model discloses further set up to: the treading linkage rod is positioned at the joint of the treading linkage rod and the piston ejector rod and is provided with a ball head, and the piston ejector rod is provided with a linkage groove for accommodating the ball head and forming linkage of the treading linkage rod and the piston ejector rod.
By adopting the technical scheme, the multi-dimensional linkage fit is formed by the ball head and the linkage groove, so that the linkage is smoother, and the practicability is improved.
The utility model discloses further set up to: a pedal rod spring for resetting the pedal end in the opposite pedal direction is arranged between the pedal linkage rod and the first cylinder body.
Through adopting above-mentioned technical scheme, add the foot bar spring, further improve the comfort level of trampling the in-process to in time reset trampling the end after trampling the end.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is a transverse cross-sectional view of an embodiment of the present invention;
FIG. 3 is a longitudinal cross-sectional view of an embodiment of the present invention;
FIG. 4 is a perspective view of the electric booster, brake pump assembly and reduction drive assembly in accordance with one embodiment of the present invention;
fig. 5 is a sectional view of the pedal lever assembly, the first cylinder and the second cylinder according to the embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
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 orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-5, the utility model discloses a decoupling type electric power-assisted brake device, which comprises a shell 1 and a decoupling brake system arranged in the shell 1, the decoupling brake system comprises a pedal rod assembly 2, a sensing assembly 3, an electric booster 4 and a brake pump assembly 5, one end of the pedal rod assembly 2 is positioned outside the shell 1 as a pedal end 21 linked with a pedal, the other end is positioned in the shell 1 as an action sensing end 22 moving axially, the sensing assembly 3 positioned in the shell 1 controls the brake pump mandril 51 of the brake pump assembly 5 driven by the electric booster 4 to push into the brake pump assembly 5 by the pedal depth of the sensing action sensing end 22, the decoupling fit of the pedal rod assembly 2 and the brake pump assembly 5 is formed, the decoupling type electric power-assisted brake device also comprises a first cylinder 6 and a second cylinder 7 which are fixed on the shell 1, a first piston cavity 61 is arranged in the first cylinder 6 along the pedal direction, the pedal rod assembly 2 extends into the first cylinder 6 and is provided with a first piston 23 moving along the first piston cavity 61, the first piston 23 divides the first piston cavity 61 into a first cavity 611 close to the stepping end 21 and a second cavity 612 far from the stepping end 21, the second cylinder 7 is located at the side of the first cylinder 6, the second cylinder 7 is provided with a second piston cavity 71 along the direction parallel to the stepping direction, a second piston 72 moving along the second piston cavity 71 is arranged in the second piston cavity 71, the second piston 72 divides the second piston cavity 71 into a third cavity 711 and a fourth cavity 712, a damping passage 62 communicating the second cavity 612 and the third cavity 711 and having a smaller cross-sectional area than the first piston cavity 61 is arranged between the first cylinder 6 and the second cylinder 7, the second cavity 612 and the third cavity 711 are filled with hydraulic oil, the second cylinder 7 is provided with a reset member for resetting the second piston 72 from the fourth cavity 712 to the third cavity 711, a speed reduction transmission assembly 8 is arranged between the electric booster 4 and a brake pump mandril of the brake pump assembly 5, firstly, a treading end 21 linked with a pedal moves towards the direction of a brake main pump, in the moving process, a first piston 23 gradually conveys hydraulic oil from a second cavity 612 to a third cavity 711 through a damping channel 62, because the sectional area of the damping channel 62 is smaller than that of a first piston cavity 61, damping feedback similar to the traditional automobile treading brake can be formed in the conveying process, the damping feedback is larger when the treading speed is faster, and simultaneously, a resetting piece generates soft reverse thrust when the second piston 72 is subjected to hydraulic thrust, so that the simulated treading feeling is very vivid, the treading force is controlled by an assistant driver, the driving experience is improved, after the treading is finished, the resetting piece resets the second piston 72 from the fourth cavity 712 to the third cavity 711, so that the hydraulic oil can flow back to the second cavity 612, in addition, the second cylinder 7 is arranged on the side surface of the first cylinder 6, the length of the pedaling sensation simulator is effectively shortened while the first cylinder 6 is ensured to have enough pedaling depth, and the residual space in the shell 1 is reasonably utilized, so that the structure is more simplified and compact; secondly, the speed reduction transmission assembly 8 effectively reduces the speed of the electric booster 4 and improves the driving force, so that the brake pump assembly 5 can brake quickly and stably; and the pedal lever assembly 2 is in decoupling fit with the brake pump assembly 5 and is arranged for application with an energy recovery function. In addition, the outer peripheries of the first piston 63 and the second piston 72 are provided with sealing rings 631 which are in sealing fit with the inner walls of the piston cavities.
The reset piece is a cylinder spring 73 positioned in the fourth cavity 712, the cylinder spring 73 is compressed between the second piston 72 and the cavity wall of the second piston cavity 71, and the space of the fourth cavity 712 is reasonably utilized for installing the cylinder spring 73 serving as the reset piece, so that the structure is more compact, and continuous and stable pedal force and reset force can be provided.
The decelerating transmission assembly 8 comprises a main gear 81, a decelerating gear set 82, a pushing seat 83 and driving screws 84, the electric booster 4 drives the main gear 81 to rotate, two driving screws 84 are arranged in a V shape with the main gear 81, the driving screws 84 are provided with transmission gears 85 rotating synchronously, two decelerating gear sets 82 are respectively arranged between the main gear 81 and the two driving screws 84, the decelerating gear set 82 comprises a first decelerating gear 821 and a second decelerating gear 822 rotating synchronously, the first decelerating gear 821 is meshed with the main gear 81 and has a diameter larger than that of the main gear 81, the second decelerating gear 822 is meshed with the transmission gears 85 and has a diameter smaller than that of the transmission gears 85, the pushing seat 83 is respectively provided with a matching part 831 which is in threaded fit with each driving screw 84, and moves along the axial direction of the screw to form a pushing fit with the ejector rod of the brake pump when the driving screws 84 rotate, the reduction gear system composed of the main gear 81, the reduction gear set 82 and the transmission gear 85 greatly increases the torque output from the main gear 81 through multiple times of speed reduction, and is matched with the ejection seat 83 in threaded fit with the driving screw 84 to convert the rotation torque into linear driving force and greatly increase the linear driving force, and provide stable transmission, thereby ensuring that the brake pump assembly 5 is braked quickly and stably, secondly, the main gear 81, the reduction gear set 82 and the driving screw 84 are arranged in a V shape, and the transverse two sides in the shell 1 which are relatively vertical to the pedaling direction are reasonably utilized, thereby shortening the length of the shell 1 in the relative pedaling direction, and enabling the structure to be more compact.
The main gear 81, the first reduction gear 821, the second reduction gear 822 and the transmission gear 85 are all helical gears, each gear of the transmission assembly adopts a helical gear, compared with the traditional gear, the helical gears have the characteristics of smooth transmission, small impact, vibration and noise and the like, so the electric power-assisted brake device is very suitable for the heavy-load application occasion of the electric power-assisted brake device, the stable output of large driving force is ensured, the electric power-assisted device 4 comprises a motor and a gear shaft 41 which is driven by the motor to rotate and is meshed with the main gear 81, the first reduction gear 821, the second reduction gear 822 and the transmission gear 85 are all provided with rotating shafts which are in rotating fit with the shell 1, the contact part of the rotating shaft and the shell is provided with a bearing for ensuring the rotating stability, the electric booster 4 is provided with a rotation sensor, the operation of the electric booster 4 is detected and monitored, and the displacement of the knock base 83 can be detected.
The driving screw 84 is sleeved with a brake return spring 86 for returning the ejector seat 83 away from the brake pump assembly 5, the brake return spring 86 is additionally arranged, the ejector seat 83 is timely returned after the braking action is finished, and in a specific embodiment, the brake return spring 86 is compressed between the ejector seat 83 and the bearing.
The sensing assembly 3 comprises a sensing block 31 and a linear position sensor 32, the sensing block 31 is installed at the action sensing end 22, the linear position sensor 32 is fixed at the shell 1 and detects the treading depth and the treading speed of the action sensing end 22 through the sensing block 31, the traditional sensor infers the relative movement distance of the action sensing end 22 through detecting the rotating speed of a gear meshed with the periphery of the pedal rod assembly 2, after the pedal rod assembly 2 is used for a certain time, the position of the pedal rod assembly 2 can be deviated, so that the detected relative movement distance and the actual distance generate data deviation, the data deviation is adjusted to be the linear position sensor 32, the linear position sensor 32 is matched with the sensing block 31 to detect the absolute movement distance of the pedal rod assembly 2, and therefore the data deviation generated by the position deviation of the pedal rod assembly 2 is avoided, the sensing assembly 3 further comprises a control module used for calculating data and controlling the electric booster 4 according to the data, this control module is multi-functional integrated module, and is present mature technology, and no longer gives unnecessary details here, for making the structure more compact and the response effect better, the mounted position of straight line position sensor 32 is regarded as to the lateral wall of second cylinder 7.
The pedal rod assembly 2 comprises a pedal linkage rod 24 and a piston mandril 25 which are sequentially arranged in a linkage manner along a pedal direction, a pedal end 21 is arranged on the pedal linkage rod 24, an action induction end 22 and a first piston 23 are arranged on the piston mandril 25, the piston mandril 25 passes through the second cavity 612 and extends out of the first cylinder body 6, the part of the piston mandril 25 passing through the second cavity 612 is in movable sealing fit with the cylinder wall of the first cylinder body 6, the pedal rod is divided into two parts, the assembly convenience is improved while the pedal rod assembly is adapted to the pedal, the structure is more reasonable, the piston mandril 25 extends out of the first cylinder body 6, therefore, the action induction end 22 is positioned outside the first cylinder body 6, the sensing assembly 3 can control the electric booster 4 to drive the brake pump ejector rod of the brake pump assembly to push into the corresponding depth of the brake pump assembly through the treading depth of the induction action induction end 22, and the brake pump ejector rod can also be pushed into the brake pump assembly in a physical contact mode.
The piston carrier rod 25 can pass through the central through hole 832 of the carrier block 83 and be held at a distance from the brake pump assembly 5, which distance can be defined as a decoupling gap. When the electric power-assisted brake device is not electrified, the piston ejector rod 25 abuts against the ejector seat 83 to eliminate decoupling gaps and generate a certain braking force, and the manual auxiliary safety measure can help to generate a part of braking force and deceleration under the failure mode of the electromechanical brake booster.
The trample linkage rod 24 is provided with a ball head 241 at the joint of the trample linkage rod and the piston mandril 25, the piston mandril 25 is provided with an accommodating ball head 241 and forms a linkage groove 251 for linkage of the trample linkage rod 24 and the piston mandril 25, and the ball head 241 and the linkage groove 251 form multi-dimensional linkage cooperation, so that linkage is smoother and practicability is improved.
The first cylinder 6 or the second cylinder 7 is provided with an air bleeder 64 communicated with the second cavity 612, and the air bleeder 64 is additionally arranged on the second cylinder 7 in a specific embodiment and used for discharging gas in hydraulic oil, so that the practicability is improved.
The oiling device 63 and the air bleeding device 64 are both of the conventional device structure, and are not described in detail.
A pedal rod spring 242 for resetting the pedal end 21 in the opposite pedal direction is arranged between the pedal linkage rod 24 and the first cylinder 6, the pedal rod spring 242 is additionally arranged, the comfort level in the pedal process is further improved, and the pedal end 21 is timely reset after the pedal is finished.
Claims (9)
1. The utility model provides an electronic helping hand arresting gear of decoupling zero formula, includes the casing and sets up the decoupling zero braking system in the casing, decoupling zero braking system including foot bar assembly, sensing assembly, electric booster and brake pump assembly, foot bar assembly one end be located the casing outside as trample the end with the footboard linkage, the other end is located the casing as axial displacement's action response end, is located the casing the sensing assembly trample the brake pump ejector pin of degree of depth control electric booster drive brake pump assembly through response action response end and push the corresponding degree of depth of brake pump assembly, constitute the decoupling zero cooperation of foot bar assembly and brake pump assembly, its characterized in that: the pedal rod assembly extends into the first cylinder body and is provided with a first piston moving along the first piston cavity, the first piston separates the first piston cavity into a first cavity close to the pedal end and a second cavity far away from the pedal end, the second cylinder body is positioned on the side surface of the first cylinder body, the second cylinder body is provided with a second piston cavity along the direction parallel to the pedal direction, a second piston moving along the second piston cavity is arranged in the second piston cavity, the second piston separates the second piston cavity into a third cavity and a fourth cavity, a damping channel communicated with the second cavity and the third cavity is arranged between the first cylinder body and the second cylinder body, the sectional area of the damping channel is smaller than that of the first piston cavity, and the second cavity and the third cavity are filled with hydraulic oil, the second cylinder body is provided with a resetting piece for resetting the second piston from the fourth cavity to the third cavity, and a speed reduction transmission assembly is arranged between the electric booster and a brake pump ejector rod of the brake pump assembly.
2. The decoupled, electrically assisted brake apparatus of claim 1, wherein: the reset piece is a cylinder spring positioned in the fourth cavity, and the cylinder spring is compressed between the second piston and the cavity wall of the second piston cavity.
3. The decoupled, electrically assisted brake apparatus of claim 1, wherein: the speed reduction transmission assembly comprises a main gear, a speed reduction gear set, a pushing seat and a driving screw rod, the electric booster drives the main gear to rotate, two driving screws are arranged and arranged in a V shape with the main gear, the driving screws are provided with transmission gears which rotate synchronously, the number of the reduction gear sets is two and the reduction gear sets are respectively positioned between the main gear and the two driving screws, the reduction gear set comprises a first reduction gear and a second reduction gear which rotate synchronously, the first reduction gear is meshed with the main gear and has a diameter larger than that of the main gear, the second reduction gear is meshed with the transmission gear, the diameter of the second reduction gear is smaller than that of the transmission gear, the ejector bases are respectively provided with a matching part in threaded fit with each driving screw, and the brake pump ejector rod moves along the axial direction of the screw rod when the driving screw rod rotates to form the pushing fit with the brake pump ejector rod.
4. The decoupled, electrically assisted brake apparatus of claim 3, wherein: the main gear, the first reduction gear, the second reduction gear and the transmission gear are all helical gears.
5. The decoupled, electrically assisted brake apparatus of claim 3, wherein: the driving screw rod is sleeved with a brake return spring which returns the ejector base to a direction far away from the brake pump assembly.
6. The decoupled, electrically assisted brake apparatus of claim 1, wherein: the sensing assembly comprises a sensing block and a linear position sensor, the sensing block is installed at the action sensing end, and the linear position sensor is fixed on the shell and detects the treading depth and the treading speed of the action sensing end through the sensing block.
7. The decoupled, electrically assisted brake apparatus of claim 1, wherein: the foot bar assembly include along trampling the gangbar and the piston ejector pin that the direction links setting gradually, the end of trampling set up in trampling the gangbar, action response end and first piston set up in the piston ejector pin, the piston ejector pin pass the second chamber and extend to outside the first cylinder body, the piston ejector pin wear out the part of second chamber and be the movable seal cooperation between the jar wall of first cylinder body.
8. The decoupled, electrically assisted brake apparatus of claim 7, wherein: the treading linkage rod is positioned at the joint of the treading linkage rod and the piston ejector rod and is provided with a ball head, and the piston ejector rod is provided with a linkage groove for accommodating the ball head and forming linkage of the treading linkage rod and the piston ejector rod.
9. The decoupled, electrically assisted brake apparatus of claim 7, wherein: a pedal rod spring for resetting the pedal end in the opposite pedal direction is arranged between the pedal linkage rod and the first cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021261821.8U CN212353941U (en) | 2020-06-30 | 2020-06-30 | Decoupling type electric power-assisted brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021261821.8U CN212353941U (en) | 2020-06-30 | 2020-06-30 | Decoupling type electric power-assisted brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212353941U true CN212353941U (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021261821.8U Active CN212353941U (en) | 2020-06-30 | 2020-06-30 | Decoupling type electric power-assisted brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212353941U (en) |
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2020
- 2020-06-30 CN CN202021261821.8U patent/CN212353941U/en active Active
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