CN211335952U - Hydraulic unit for a brake system, brake system and motor vehicle - Google Patents
Hydraulic unit for a brake system, brake system and motor vehicle Download PDFInfo
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- CN211335952U CN211335952U CN201922016957.6U CN201922016957U CN211335952U CN 211335952 U CN211335952 U CN 211335952U CN 201922016957 U CN201922016957 U CN 201922016957U CN 211335952 U CN211335952 U CN 211335952U
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Abstract
The utility model relates to the field of automobiles, and discloses a hydraulic unit for a braking system, a braking system and an automobile; wherein the hydraulic unit includes a hydraulic block having a brake main cylinder hole formed inside; a piston received in the brake master cylinder bore, the piston sealingly engaging the brake master cylinder bore and being capable of translation along an axial direction of the brake master cylinder bore under a braking input force; a displacement detecting element provided outside the hydraulic block for detecting a position of the piston relative to the brake master cylinder bore. The utility model provides a hydraulic pressure piece's modularization degree is higher, equipment and carrying cost are lower, and signal detection is more reliable.
Description
Technical Field
The utility model relates to an automotive filed specifically relates to a hydraulic unit for braking system, further, the utility model discloses still relate to braking system and car.
Background
The hydraulic unit of the automobile brake system generally comprises a hydraulic block, and a power-assisted motor and an electric control module which are respectively arranged on two opposite sides of the hydraulic block, are important components of the automobile brake system and are generally connected between a brake pedal and a wheel brake.
When the automobile brakes, a driver can step on a brake pedal, the brake pedal pushes a brake master cylinder piston of a hydraulic block to move, the hydraulic block generates brake fluid, the brake fluid is distributed and supplied to each wheel brake, and then the wheels are braked by the wheel brakes; or when the brake pedal pushes a brake master cylinder piston of the hydraulic block to move, the braking force required to be provided is determined by the displacement of the piston movement (the displacement indicates the depth of the brake pedal being stepped on), and the electric control module controls the power-assisted motor to drive the hydraulic block to generate corresponding braking liquid according to the braking force, and the braking liquid is distributed and supplied to each wheel actuator.
In order to sense the depth to which the brake pedal is depressed to properly supply the brake fluid distributed to the respective wheel brakes, a position detecting element for sensing the depth of braking is generally installed in the hydraulic unit.
The inventor of the application discovers that the installation mode of the displacement detection element of the existing hydraulic unit is unreasonable in the practical process, so that the modularization degree of the hydraulic unit is low, the loading cost and the assembly cost are high, and the reliability of the detection signal is easy to be interfered.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above-mentioned problem that prior art exists to a certain extent, providing a hydraulic unit for braking system, this hydraulic unit's modularization degree is higher, equipment and carrying cost are lower, and signal detection is more reliable.
In order to achieve the above object, a first aspect of the present invention provides a hydraulic unit for a brake system, the hydraulic unit including:
a hydraulic block having a brake main cylinder hole formed on an inner side thereof;
a piston received in the brake master cylinder bore, the piston sealingly engaging the brake master cylinder bore and being capable of translation along an axial direction of the brake master cylinder bore under a braking input force;
a displacement detecting element provided outside the hydraulic block for detecting a position of the piston relative to the brake master cylinder bore.
Preferably, the hydraulic unit further comprises a power-assisted motor and an electronic control module; the electronic control module is used for controlling the operation of the power-assisted motor and the hydraulic block according to the position of the piston relative to the braking main cylinder hole so as to enable the hydraulic block to generate brake fluid; the power-assisted motor and the electric control module are respectively arranged on two opposite sides of the hydraulic block, and the axis of the power-assisted motor is perpendicular to the axis of the braking main cylinder hole.
Preferably, the brake master cylinder bore has an opening portion formed on a side wall of the hydraulic block, and has a piston stopper section close to the opening portion and a master cylinder seal section distant from the opening portion in an axial direction; the piston is provided with a displacement indicating section which is in limit connection with the piston limiting section in the axial direction so as to limit the circumferential displacement of the piston relative to the braking main cylinder hole, and a piston sealing section which is in sealing fit with the main cylinder sealing section.
Preferably, the hydraulic block comprises a square main body part and a boss protruding outwards from one side wall of the main body part, the braking main cylinder hole penetrates through the boss along a direction perpendicular to the side wall and extends to the inner side of the main body part, the part of the braking main cylinder hole located in the boss is a piston limiting section, and the part of the braking main cylinder hole located in the main body part is a main cylinder sealing section.
Preferably, a sealing ring is mounted on an inner circumferential surface of the master cylinder sealing section, which is close to the piston limiting section, and is used for sealing a gap between an outer circumferential surface of the piston sealing section and the inner circumferential surface of the master cylinder sealing section.
Preferably, a first protrusion or a first groove is formed on the inner circumferential surface of the piston limiting section along the axial direction parallel to the piston limiting section; and a second groove or a second protrusion is formed on the outer peripheral surface of the displacement indicating section corresponding to the first protrusion or the first groove.
Preferably, the displacement detecting element includes:
the displacement indicator is sleeved on the part, extending out of the hydraulic block, of the displacement indicating section and used for indicating the position of the piston relative to the braking main cylinder hole;
and the displacement sensor module is arranged on the electric control module, is close to the displacement indicator and is used for detecting the rotating position of the displacement indicator.
Preferably, a spiral groove is formed on the outer circumferential surface of the displacement indicating section, and a protrusion accommodated in the spiral groove is formed on the inner circumferential surface of the displacement indicator; the displacement indicator is axially and rotatably sleeved on the outer side of the displacement indicating section and abuts against the outer side wall of the hydraulic block.
Based on the utility model discloses the hydraulic unit for braking system that the first aspect provided, the utility model discloses the second aspect provides a braking system, including the hydraulic unit, the hydraulic unit is according to the utility model discloses the first aspect a hydraulic unit for braking system.
Based on the utility model discloses the braking system that the second aspect provided, the utility model discloses the third aspect provides an automobile, including braking system, braking system is according to the utility model discloses the second aspect braking system.
The utility model provides a technical scheme has following beneficial effect:
the utility model discloses set up the displacement detection component in the outside of hydraulic pressure piece, from this, the displacement detection component can not occupy the arrangement space of spare parts such as solenoid valve, oil circuit in the hydraulic pressure piece to can further reduce the volume of hydraulic pressure piece, as the biggest spare part of volume in braking system, the reduction of the volume of hydraulic pressure piece will be favorable to reducing of whole braking system's volume, thereby be convenient for braking system carries on and installs on different motorcycle types.
In addition, because the displacement detection element is installed on the outer side of the hydraulic block, the displacement detection element is far away from internal electrical components of the hydraulic block, such as relevant circuits of an electromagnetic valve and the like, so that the displacement detection element can be far away from an internal interference source of the hydraulic block, the risk that the displacement detection element influences signals due to the fact that interference exists around an induction chip or a signal transmission path is reduced, and the reliability of signal detection and transmission of the displacement detection element is improved. In addition, because the displacement detection element is far away from the interference source, the anti-interference structural design or the electrical design can be omitted, and the development cost of the braking system is reduced.
In addition, the displacement detection element is arranged on the outer side of the hydraulic block, so that the modular design between the displacement detection element and the hydraulic block can be realized, and the assembly between the displacement detection element and the hydraulic block is facilitated on one hand; on the other hand, when the structural configuration of the hydraulic unit needs to be adjusted according to different vehicle models, for example, when the aperture of the main braking cylinder hole of the hydraulic block needs to be adjusted, only the piston or the displacement detection element needs to be changed, and the installation positions of parts in the hydraulic block, such as the electromagnetic valve and the oil supply pipeline, are not interfered by the displacement detection element, so that the difficulty of design change of the braking system is reduced, and the braking system can be adjusted according to different vehicle models.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a hydraulic unit provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a hydraulic unit having a partially exploded structure according to an embodiment of the present invention;
fig. 3 is a longitudinal sectional view of a portion of a piston structure provided by an embodiment of the present invention;
FIG. 4 is a longitudinal cross-sectional view of a braking master cylinder bore provided by an embodiment of the present invention;
FIG. 5 is a schematic view of the piston and master cylinder push rod of the present invention installed in a first position in a brake master cylinder bore;
FIG. 6 is a schematic view of the piston and master cylinder push rod of the present invention in a second position in the brake master cylinder bore;
fig. 7 is a side view of a piston and displacement sensing element provided by an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a hydraulic unit, not shown in the electronic control module, according to another embodiment of the present invention.
Description of the reference numerals
1-a hydraulic block; 2-an electronic control module; 3-a power-assisted motor; 4-master cylinder push rod; 5-a piston; 6-a displacement indicator; 7-a groove; 8-bulge; 9-a spiral groove; 10-a displacement sensor module; 11-braking the axis of the master cylinder bore; 12-a piston seal section; 13-displacement indication segment; 14-a master cylinder sealing section; 15-piston limit section; 16-braking the master cylinder bore; 17-brake input force; 18-a helical protrusion; 19-inductive head of displacement sensor module, 20-wiring carrier; 21-outer protective shell; 22-a connector; 23-boss.
Detailed Description
In the present invention, the use of directional terms such as "upper, lower, left, right" in the case where no description is made to the contrary generally means the reference to the drawings to refer to upper, lower, left, right. "inner and outer" refer to the inner and outer contours of the component itself.
Referring to fig. 1 to 8, a first aspect of the embodiments of the present invention provides a hydraulic unit for a brake system, including: a hydraulic block 1 having a brake master cylinder hole 16 formed therein; a piston 5 housed in the brake main cylinder bore 16, the piston 5 being in sealing engagement with the brake main cylinder bore 16 and being translatable in an axial direction 11 of the brake main cylinder bore 16; a displacement detecting element provided outside the hydraulic block 1 for detecting the position of the piston 5 with respect to the brake master cylinder hole 16.
In particular, the hydraulic unit is connected between the brake pedal and the wheel brakes. More specifically, the hydraulic block 1 is connected to each wheel brake through an oil supply line, a brake main cylinder hole 16 is generally formed in the hydraulic block 1, a piston 5 is accommodated in the brake main cylinder hole 16, and the piston 5 is drivingly connected to a brake pedal through a push rod, which is generally disposed in a cab. When a driver needs to brake the automobile, the piston 5 can be driven to move in the brake main cylinder hole 16 by pressing down the brake pedal, braking pressure is generated, the hydraulic block 1 is prompted to generate brake fluid, and the brake fluid is distributed and supplied to each wheel brake, so that the wheels are braked.
The hydraulic block 1 is usually further provided with a controllable electromagnetic valve, and the flow rate of an oil supply pipeline connected between the hydraulic block 1 and the wheel brake can be adjusted by controlling the opening degree and the driving frequency of the electromagnetic valve in combination with the braking pressure generated by the movement of the piston 5, so as to control the braking force of the wheel.
The brake fluid output by the hydraulic block 1 is generally related to the depth to which the brake pedal is depressed. For example, when the brake pedal is depressed to a greater depth, the hydraulic block 1 needs to output more brake fluid, thereby making it possible to cause the wheel brakes to generate greater braking force to brake the wheels. In order to be able to detect the depth to which the brake pedal is depressed in order to control the hydraulic block 1 to generate the required brake fluid, the hydraulic unit is provided with a displacement detection element. The position of the piston 5 relative to the brake master cylinder hole 16 is detected by the displacement detection element, whereby the depth to which the brake pedal is depressed can be confirmed, and the hydraulic block 1 is controlled to generate and output the corresponding brake fluid to each wheel brake.
The embodiment of the utility model provides an in, the displacement detection component sets up in the outside of hydraulic pressure piece 1, from this, the displacement detection component can not occupy the arrangement space of spare parts such as solenoid valve, oil circuit in hydraulic pressure piece 1 to can further reduce the volume of hydraulic pressure piece 1, as the biggest spare part of volume in the braking system, the reduction of the volume of hydraulic pressure piece 1 will be favorable to reducing of whole braking system's volume, thereby be convenient for carrying on and installing of braking system on different motorcycle types.
In addition, because the displacement detection element is installed on the outer side of the hydraulic block 1, this means that the displacement detection element will be far away from the internal electrical components of the hydraulic block 1, such as the relevant circuits of the electromagnetic valve, etc., so that the displacement detection element can be far away from the internal interference source of the hydraulic block 1, the risk that the displacement detection element affects the signal due to the interference existing around the sensing chip or the signal transmission path is reduced, and the reliability of signal detection and transmission of the displacement detection element is improved. In addition, because the displacement detection element is far away from the interference source, the anti-interference structural design or the electrical design can be omitted, and the development cost of the braking system is reduced.
In addition, the displacement detection element is arranged on the outer side of the hydraulic block 1, so that the modular design between the displacement detection element and the hydraulic block 1 can be realized, and on one hand, the assembly between the displacement detection element and the hydraulic block 1 is convenient; on the other hand, when the structural configuration of the hydraulic unit needs to be adjusted according to different vehicle models, for example, when the aperture of the main braking cylinder hole 16 of the hydraulic block 1 needs to be adjusted, only the piston 5 or the displacement detection element needs to be changed, and the installation positions of the parts in the hydraulic block 1, such as the electromagnetic valve and the oil supply pipeline, are not interfered by the displacement detection element, so that the difficulty of design change of the braking system is reduced, and the adjustment of the braking system according to different vehicle models is facilitated.
In the above embodiment, the wheel brake can be realized by stepping on the brake pedal. However, braking the wheel by stepping on the brake pedal alone often requires a driver to provide a large stepping force, which is poor in user experience. Therefore, the power-assisted motor 3 can be further provided, when the fact that the brake pedal is stepped on is sensed, the power-assisted motor 3 generates brake pressure, the hydraulic block 1 is driven to generate brake fluid, and the brake fluid is distributed and supplied to each wheel brake, so that the manpower required by automobile braking can be saved, and the performance and the user experience of a brake system are improved.
Referring to fig. 1-2, specifically, the power-assisted motor 3 is mounted on the hydraulic block 1 and is in signal connection with the electronic control module 2, and an output shaft of the power-assisted motor 3 is connected with a driving mechanism inside the hydraulic block 1; during operation, the electronic control module 2 receives the position signal detected by the displacement detecting element, and controls the operation of the power-assisted motor 3 and the operation of the solenoid valve in the hydraulic block 1 according to the position signal, so that the hydraulic block 1 generates the required brake fluid, and distributes and supplies the brake fluid to each wheel brake. In the event of a failure of the booster motor 3, the piston 5 alone may also act to drive the hydraulic block 1 to generate brake fluid.
Generally, the booster motor 3 and the electronic control module 2 are respectively installed on two opposite sides of the hydraulic block 1, and the axis of the booster motor 3 is perpendicular to the axis 11 of the brake main cylinder hole 16. In particular, the hydraulic block 1 is a generally square metal block, generally made of aluminum or an aluminum alloy. A through hole penetrating through two opposite sides of the hydraulic block 1 is formed in the hydraulic block 1, the power-assisted motor 3 is installed on the hydraulic block 1 on one side of the through hole, and the electric control module 2 is installed on the hydraulic block 1 on the other side of the through hole; the brake main cylinder hole 16 is formed on a side wall between the two opposite sides of the hydraulic block 1, and the axis 11 of the brake main cylinder hole 16 and the axis of the through hole are perpendicular to each other.
Referring to fig. 4-6, in order to make the piston 5 and the brake main cylinder hole 16 be in sealing engagement, the brake main cylinder hole 16 is formed with a main cylinder sealing section 14 in the axial direction, and the main cylinder sealing section 14 is in sealing engagement with the piston 5, so that when the piston 5 is translated towards the inner side of the brake main cylinder hole 16 along the axial direction of the brake main cylinder hole 16, a braking pressure can be generated to drive the hydraulic block 1 to output braking fluid to each wheel brake.
Referring to fig. 4 to 6, in order to enable the piston 5 to only translate in the brake main cylinder bore 16 along the axial direction of the brake main cylinder bore 16, and prevent the piston 5 from rotating circumferentially relative to the brake main cylinder bore 16, the brake main cylinder bore 16 is further formed with a piston limit section 15 in the axial direction, and the piston limit section 15 is in limit connection with the piston 5.
Referring to fig. 5 and 6, specifically, the brake main cylinder hole 16 has an opening formed in a side wall of the hydraulic block 1, the piston 5 is accommodated in the brake main cylinder hole 16 and extends out of the hydraulic block 1 from the opening, an outer end portion of the piston 5 is drivingly connected to a brake pedal through a master cylinder push rod 4, and when the brake pedal is depressed, a brake input force 17 is applied to the master cylinder push rod 4, and the piston 5 is pushed by the master cylinder push rod 4 to move along an axial direction of the brake main cylinder hole 16.
Referring to fig. 4, the main cylinder sealing section 14 and the piston stopper section 15 are coaxial and adjacent to each other. Wherein the piston stopper 15 is located at the outer side near the opening portion, and the main cylinder sealing section 14 is located at the inner side far from the opening portion.
Referring to fig. 3, 5 and 6, in order to cooperate with the master cylinder sealing section 14 and the piston limiting section, the piston 5 has a piston sealing section and a displacement indicating section 13 in the axial direction, and the piston sealing section is in sealing cooperation with the master cylinder sealing section 14 to prevent brake fluid from overflowing between the piston 5 and the brake master cylinder hole 16; the displacement indication section 13 is connected with the piston limiting section 15 in a matching manner, so that the piston 5 is prevented from axially rotating in the braking main cylinder hole 16.
Referring to fig. 4 to 6, in order to seal the brake master cylinder hole 16 and the piston 5, a sealing ring is mounted on an inner circumferential surface of the master cylinder sealing section 14 close to the piston limiting section, and the sealing ring abuts against an outer circumferential surface of the piston sealing section 12, so that a gap between the outer circumferential surface of the piston sealing section 12 and the inner circumferential surface of the master cylinder sealing section 14 can be sealed.
In order to realize the limit connection between the displacement indicating section 13 and the piston limiting section 15, a protrusion 8 is formed on the inner circumferential surface of the piston limiting section 15 along the direction parallel to the axis of the piston limiting section 15, and a groove 7 is formed on the outer circumferential surface of the displacement indicating section 13 corresponding to the protrusion 8. Or, a groove is formed on the inner circumferential surface of the piston limiting section 15 along the axial direction parallel to the piston limiting section 15, and a protrusion is formed on the outer circumferential surface of the displacement indicating section 13 corresponding to the groove.
In the embodiment shown in fig. 2 and 8, the recess 7 is formed on the outer peripheral surface of the piston 5, and the boss 8 is formed on the inner peripheral surface of the brake master cylinder hole 16. In this condition, referring to fig. 3 to 6, in order to avoid interference of the boss 8 formed on the brake master cylinder hole 16 with the assembly of the piston 5, the bore diameter of the master cylinder sealing section 14 is smaller than that of the piston stopper section 15, and accordingly, the radial dimension of the piston sealing section 12 of the piston 5 is smaller than that of the displacement indicating section 13. That is, when the piston 5 is fitted into the brake main cylinder hole 16 from the outside of the hydraulic block 1, the boss 8 formed on the inner peripheral surface of the brake main cylinder hole 16 does not obstruct the entry of the piston 5.
If it is considered that the boss is formed on the outer peripheral surface of the piston 5 and the recess is formed on the inner peripheral surface of the brake main cylinder hole 16, the inner diameter of the brake main cylinder hole 16 may not be graded. That is, the bore diameter of the piston stopper 15 may be equal to the bore diameter of the master cylinder sealing section 14; accordingly, the radial dimension of the piston sealing section 12 of the piston 5 may be equal to the radial dimension of the displacement indicating section 13.
Referring to fig. 8, the above embodiment forms the piston stopper section 15 in the hydraulic block 1, which makes it possible to increase the length of the hydraulic block 1 in the axial direction of the brake master cylinder hole 16. In order to solve the problem, in the preferred embodiment of the present invention, the hydraulic block 1 includes a square main body portion and a boss 23 protruding outward from a side wall of the main body portion, the braking main cylinder hole 16 runs through the boss 23 and extends to the inner side of the main body portion along a direction perpendicular to the side wall, the braking main cylinder hole 16 is located the portion in the boss 23 is the piston spacing section 15, the braking main cylinder hole 16 is located the portion in the main body portion is the main cylinder sealing section 14.
The structure of the boss 23 can be various, in the embodiment shown in fig. 8, the boss 23 is cylindrical, a circular through hole penetrating through the boss 23 is formed in the boss 23 along the axial direction, the through hole extends to the inner side of the main body part, the through hole in the boss 23 is the piston limiting section 15, and the through hole in the main body part is the main cylinder sealing section 14. The piston 5 extends into the main body part from the opening end of the boss 23, the outer peripheral surface of the piston 5 is in sealing fit with the main cylinder sealing section 14 arranged in the main body part, and the end part of the piston 5 is abutted with an elastic element such as a spring in the main cylinder sealing section 14. When the brake pedal is released, i.e., no external force is applied to the brake pedal, the piston 5 is pushed by the elastic member in the master cylinder sealing section 14 to be reset to the original position.
Through the mode, the detection requirement of the displacement detection element on the displacement of the piston 5 can be met under the condition that the design requirement of the main cylinder of the hydraulic block 1 is not changed, and the reduction of the volume of the hydraulic block 1 is facilitated, so that the brake system can be conveniently carried on different vehicle types.
As described above, the displacement detecting element is mounted on the outside of the hydraulic block 1 for detecting the position of the piston 5 relative to the brake master cylinder hole 16. To achieve this function, the displacement detecting element includes: a displacement indicator 6, wherein the displacement indicator 6 is sleeved on the part of the displacement indicating section 13 extending out of the hydraulic block 1 and used for indicating the position of the piston 5 relative to the brake main cylinder hole 16; and the displacement sensor module 10 is installed on the electronic control module 2, is close to the displacement indicator 6, and is used for detecting the position of the displacement indicator 6.
Specifically, the displacement indicator 6 may be, for example, a magnetically conductive metal ring, such as a magnetic ring, and correspondingly, the displacement sensor module 10 may be a magnetic sensor or the like; alternatively, the displacement indicator 6 may be, for example, a grating, and correspondingly, the displacement sensor module 10 may be a photosensitive sensor or the like.
Referring to fig. 7, the displacement sensor module 10 includes a sensor head 19, the sensor head 19 is electrically connected to the electronic control module 2 through a wiring carrier 20, and the wiring carrier 20 may be, for example, a printed circuit board PCB, a flexible circuit board FPC, a conductive structure, or a combination thereof.
In a preferred embodiment, in order to protect the electrical components inside the displacement sensor module 10 and to facilitate the mounting of the displacement sensor module 10, an outer protective shell 21 may be provided on the outside of the displacement sensor module 10 and the wiring carrier 20. The outer protective shell 21 may be a plastic part, a metal shell or a sealant, and may also be a combination of these forms. The outer protective shell 21 may be designed independently, or may be designed integrally with the outer shell of the electronic control module 2.
One end of the wiring carrier 20 is led out from the inductive head 19, and the other end is electrically connected to the electronic control module 2 through a connector 22, and the connector 22 may be a terminal fixed by using a welding method, or may be a soldering-free terminal fixed by using an elastic element.
The displacement indicator 6 is axially and rotatably sleeved on the displacement indicating section 13, and the installation manner thereof is various, and in a specific embodiment, the displacement indicator 6 is installed on the displacement indicating section 13 by the following manner: a spiral groove 9 is formed on the outer peripheral surface of the displacement indicating section 13, and a protrusion accommodated in the spiral groove 9 is formed on the inner peripheral surface of the displacement indicator 6, and the protrusion can be, for example, a spiral protrusion 18 which is in threaded fit with the spiral groove 9; the displacement indicator 6 is sleeved on the outer side of the displacement indicating section 13 and abuts against the outer side wall of the hydraulic block 1.
In particular, the displacement indicator 6 is positioned on the outer lateral wall of the hydraulic block 1 by means of a stop element, not shown in the figures, which is only intended to limit the axial translation of the displacement indicator 6, not the axial rotation of the displacement indicator 6. When the push rod pushes the piston 5 to translate along the axial direction of the main braking cylinder hole 16 under the action of external force, the displacement indicator 6 is driven to rotate axially, and the displacement sensor module arranged on the electronic control module 2 can sense the rotary displacement of the displacement indicator 6, so that the position of the piston 5 relative to the main braking cylinder hole 16 is obtained; when the brake pedal is released, the elastic element in the sealing section 14 of the master cylinder pushes the piston 5 to move outwards, driving the displacement indicator 6 to rotate reversely.
Through the above manner, since the displacement sensor module 10 is installed on the electronic control module 2, the displacement sensor module 10 is closer to the circuit board inside the electronic control module 2, which can simplify other electrical designs such as the anti-interference structure on the signal transmission path of the displacement sensor module 10 to a certain extent, and on the other hand, the displacement sensor module 10 can also be integrally designed with the electronic control module 2, thereby simplifying the overall structure of the hydraulic unit.
In addition, the axial translation of the piston 5 is converted into the axial rotation of the displacement indicator 6 through the displacement indicator 6, the rotary displacement of the displacement indicator 6 is sensed through the displacement sensor module 10, the position relation between the displacement indicator 6 and the displacement sensor is stable, a working gap between an internal sensing chip of the displacement sensor module 10 and the displacement indicator 6 is kept unchanged, and the displacement sensor module 10 can be used in the whole engineering process under an ideal sensing environment, so that the detection precision of position signals is improved.
Based on the utility model discloses a hydraulic unit for braking system that the embodiment first aspect provided, the utility model provides a second aspect provides a braking system, including hydraulic unit, hydraulic unit is according to the utility model provides a first aspect a hydraulic unit for braking system.
Based on the utility model discloses the braking system that the embodiment second aspect provided, the utility model provides a third aspect provides an automobile, including braking system, braking system is according to the utility model provides a second aspect braking system.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical scheme of the utility model in the technical conception scope, can be right carry out multiple simple variant. Including each of the specific features, are combined in any suitable manner. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. A hydraulic unit for a brake system, comprising:
a hydraulic block (1) having a brake master cylinder hole (16) formed therein;
a piston (5) housed in the brake master cylinder bore (16), the piston (5) being in sealing engagement with the brake master cylinder bore (16) and being translatable along the axial direction of the brake master cylinder bore (16) under the action of a brake input force (17);
a displacement detection element provided outside the hydraulic block (1) for detecting the position of the piston (5) relative to the brake master cylinder bore (16).
2. A hydraulic unit for a braking system according to claim 1, characterized in that it further comprises a power-assisted motor (3) and an electronic control module (2); the electronic control module (2) is used for controlling the operation of the power-assisted motor (3) and the hydraulic block (1) according to the position of the piston (5) relative to the brake main cylinder hole (16) so as to enable the hydraulic block (1) to generate brake fluid; the power-assisted motor (3) and the electronic control module (2) are respectively arranged on two opposite sides of the hydraulic block (1), and the axis of the power-assisted motor (3) is perpendicular to the axis of the brake main cylinder hole (16).
3. The hydraulic unit for a brake system according to claim 2, wherein the brake master cylinder bore (16) has an opening portion formed on a side wall of the hydraulic block (1), and has a piston stopper section (15) near the opening portion and a master cylinder seal section (14) distant from the opening portion in an axial direction; the piston (5) is provided with a displacement indicating section (13) which is connected with the piston limiting section (15) in a limiting mode in the axial direction so as to limit the circumferential displacement of the piston (5) relative to the brake main cylinder hole (16), and a piston sealing section (12) which is in sealing fit with the main cylinder sealing section (14).
4. The hydraulic unit for a brake system according to claim 3, wherein the hydraulic block (1) includes a square main body portion and a boss (23) projecting perpendicularly outward from one side wall of the main body portion, the brake main cylinder bore (16) penetrates the boss (23) in a direction perpendicular to the side wall and extends to an inner side of the main body portion, a portion of the brake main cylinder bore (16) located within the boss (23) is a piston stopper section (15), and a portion of the brake main cylinder bore (16) located within the main body portion is a master cylinder seal section (14).
5. The hydraulic unit for a brake system according to claim 3, wherein a seal ring is mounted on an inner circumferential surface of the master cylinder sealing section (14) adjacent to the piston stopper section (15) for sealing a gap between an outer circumferential surface of the piston sealing section (12) and the inner circumferential surface of the master cylinder sealing section (14).
6. A hydraulic unit for a brake system according to claim 3, wherein a first projection or a first groove is formed on an inner peripheral surface of the piston stopper section (15) in a direction parallel to an axial direction of the piston stopper section (15); and a second groove or a second protrusion is formed on the outer peripheral surface of the displacement indicating section (13) corresponding to the first protrusion or the first groove.
7. The hydraulic unit for a brake system according to claim 3, wherein the displacement detecting member includes:
a displacement indicator (6), wherein the displacement indicator (6) is sleeved on the part of the displacement indicating section (13) extending out of the hydraulic block (1) and is used for indicating the position of the piston (5) relative to the brake main cylinder hole (16);
a displacement sensor module (10), the displacement sensor module (10) being mounted on the electronic control module (2) and being close to the displacement indicator (6) for detecting a rotational position of the displacement indicator (6).
8. The hydraulic unit for a brake system according to claim 7, wherein a spiral groove (9) is formed on an outer circumferential surface of the displacement indicating section (13), and a protrusion received in the spiral groove (9) is formed on an inner circumferential surface of the displacement indicator (6); the displacement indicator (6) is axially and rotatably sleeved on the outer side of the displacement indicating section (13) and abuts against the outer side wall of the hydraulic block (1).
9. A braking system comprising a hydraulic unit, characterized in that the hydraulic unit is a hydraulic unit for a braking system according to any one of claims 1-8.
10. A vehicle comprising a braking system, wherein the braking system is according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922016957.6U CN211335952U (en) | 2019-11-20 | 2019-11-20 | Hydraulic unit for a brake system, brake system and motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922016957.6U CN211335952U (en) | 2019-11-20 | 2019-11-20 | Hydraulic unit for a brake system, brake system and motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211335952U true CN211335952U (en) | 2020-08-25 |
Family
ID=72093049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922016957.6U Active CN211335952U (en) | 2019-11-20 | 2019-11-20 | Hydraulic unit for a brake system, brake system and motor vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211335952U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023015472A1 (en) * | 2021-08-11 | 2023-02-16 | 华为技术有限公司 | Hydraulic brake device, travel sensor, and vehicle |
| WO2023097511A1 (en) * | 2021-11-30 | 2023-06-08 | 华为技术有限公司 | Position sensor, braking device, and assembly method |
| WO2023164846A1 (en) * | 2022-03-02 | 2023-09-07 | 华为技术有限公司 | Braking device and braking system |
-
2019
- 2019-11-20 CN CN201922016957.6U patent/CN211335952U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023015472A1 (en) * | 2021-08-11 | 2023-02-16 | 华为技术有限公司 | Hydraulic brake device, travel sensor, and vehicle |
| WO2023097511A1 (en) * | 2021-11-30 | 2023-06-08 | 华为技术有限公司 | Position sensor, braking device, and assembly method |
| WO2023164846A1 (en) * | 2022-03-02 | 2023-09-07 | 华为技术有限公司 | Braking device and braking system |
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