CN117818554A - Pressure building structure for vehicle braking system - Google Patents

Pressure building structure for vehicle braking system Download PDF

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Publication number
CN117818554A
CN117818554A CN202311583987.XA CN202311583987A CN117818554A CN 117818554 A CN117818554 A CN 117818554A CN 202311583987 A CN202311583987 A CN 202311583987A CN 117818554 A CN117818554 A CN 117818554A
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CN
China
Prior art keywords
nut
rotation
piston
motor rotor
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311583987.XA
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Chinese (zh)
Inventor
邢洪滨
翟林铎
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Shanghai Weikenxi Technology Co ltd
Original Assignee
Shanghai Weikenxi Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Weikenxi Technology Co ltd filed Critical Shanghai Weikenxi Technology Co ltd
Priority to CN202311583987.XA priority Critical patent/CN117818554A/en
Publication of CN117818554A publication Critical patent/CN117818554A/en
Priority to CN202410457040.2A priority patent/CN118254753A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
    • B60T13/161—Systems with master cylinder

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The application discloses a build-up pressure structure for a vehicle braking system, wherein a motor is fixedly connected with a hydraulic control valve block through bolts; the cylinder body is axially inserted into a cylindrical hole of the hydraulic control valve block for fixation; the piston is axially inserted into the cylinder; the supporting ring is sleeved on the ring groove of the piston; one end of the piston is fixedly connected with the screw rod; the anti-rotation sliding block is fixedly connected with the screw rod; the anti-rotation sleeve is in fit contact with the anti-rotation sliding block; the anti-rotation sleeve is axially inserted into a mounting hole at the rear end of the motor shell, and is connected with the motor shell in an embedded manner; the anti-rotation sleeve is in fit contact with the inner hole wall of the motor rotor, and the locking screw plug presses the elastic gasket against the end part of the anti-rotation sleeve; the nut is axially inserted into an inner hole of the motor rotor, the clamping cushion block is mounted on the inner hole wall of the motor rotor, the clamping cushion block is attached to the nut, the gasket is mounted between the nut and the circlip, and one end of the circlip is clamped in the motor rotor. The brake system can solve the problems of complex structure, high cost and high noise of the existing brake system.

Description

Pressure building structure for vehicle braking system
Technical Field
The embodiment of the application relates to the technical field of automobile braking, in particular to a pressure building structure for a vehicle braking system.
Background
At present, the electric brake booster is widely applied to the traditional fuel vehicles, especially new energy automobiles, and compared with the traditional vacuum booster, the electric brake booster does not need a vacuum source any more, and completely relies on a motor to provide brake boosting, so that the electric brake booster has a certain trend to replace the vacuum booster.
With the development of electric and intelligent driving technologies, intelligent integrated brake systems have become a new trend. The Anti-lock brake system (ABS, anti-lock Brake System)/electronic stability control system (ESC, electronic Stability Control) and the electric brake booster system are combined to form an One-Box scheme, so that the booster function can be realized, and the functions of Anti-lock and vehicle steady state control can be realized. The integrated brake booster mainly comprises a hydraulic control valve block, a foot feel simulator part, a pressure generating device, a control unit, a sensor part and a driving motor.
According to the technical scheme, a motor drives a screw rod to rotate, the screw rod drives a nut to do linear translation motion, the nut drives a piston to do reciprocating linear motion in a cylinder body, and the piston compresses brake fluid in the cylinder body to generate hydraulic pressure. The screw, the nut and the ball form a ball screw pair, and the ball screw pair can convert the rotation motion of the screw into the linear translation motion of the nut. The current technology is that an anti-rotation sleeve is riveted on a hydraulic control valve block through a pin, the anti-rotation sleeve is provided with a concave chute, 2 parallel keys are symmetrically welded on a nut of a ball screw pair, a sliding block is arranged on the parallel keys, the nut is inserted into the anti-rotation sleeve, and the sliding block is arranged in the concave chute of the anti-rotation sleeve and can linearly slide, so that self-transmission of the nut is limited, and linear translational movement of the nut is realized.
The locking nut fixes the motor rotor, the screw rod and the stop washer together and rotates together with the motor rotor. The nut and the piston move forwards to generate hydraulic pressure, and move backwards to release pressure. When the nut moves backwards, the nut and the piston return to the original point, and the motor stops rotating.
When the nut and the piston return to the original point, the stop washer and the nut relatively rotate, so that the nut and the stop washer are locked, and the motor is difficult to restart; noise is generated when the nut is abutted against and separated from the stop washer; in addition, the existing nut anti-rotation structure has the defects of more parts, high control difficulty of an assembly process and higher cost.
At present, the speed reduction and torque increase of the torque output of the motor can be realized through a planetary gear, and the rotation motion of the gear is converted into linear translation motion through a ball screw so as to push a piston to generate hydraulic pressure. However, the transmission mechanism of the conventional planetary gear hydraulic pressure generating device is complex and has high cost, and the piston return origin of the hydraulic pressure generating device is positioned by circumferentially stopping a screw or a nut, so that noise is generated when the screw and the nut are in interference.
Disclosure of Invention
In view of the foregoing, embodiments of the present application provide a pressure building structure for a vehicle brake system, which at least solves the foregoing technical problems.
According to an embodiment of the present application, there is provided a pressure building structure for a vehicle brake system, the structure including: the hydraulic control device comprises a motor, a hydraulic control valve block, a cylinder body, a piston, a supporting ring, a screw rod, an elastic retainer ring, a gasket, a ball bearing, a nut, a motor rotor, an anti-rotation sliding block, an elastic gasket, a locking screw plug, a motor shell, an anti-rotation sleeve, a clamping cushion block and a hydraulic cavity; wherein,
the motor is fixedly connected with the hydraulic control valve block through bolts; the cylinder body is axially inserted into a cylindrical hole of the hydraulic control valve block and is fixed; the piston is axially inserted into the cylinder body, and the outer surface of the front end of the piston and the inner cavity surface of the cylinder body form a closed hydraulic cavity; the supporting ring is sleeved on the ring groove arranged on the piston; one end of the piston is fixedly connected with the screw rod;
the anti-rotation sliding block is fixedly connected with the screw rod; the anti-rotation sleeve is in fit contact with the anti-rotation sliding block; the anti-rotation sleeve is axially inserted into a mounting hole at the rear end of the motor shell, and is connected with the motor shell in an embedded manner; the anti-rotation sleeve is in fit contact with the inner hole wall of the motor rotor, and the locking screw plug presses the elastic gasket against the end part of the anti-rotation sleeve;
the nut is axially inserted into an inner hole of the motor rotor, the clamping cushion block is mounted on the inner hole wall of the motor rotor, the clamping cushion block is attached to the nut, the gasket is mounted between the nut and the elastic retainer ring and attached to the end faces of the nut and the elastic retainer ring, and one end of the elastic retainer ring is clamped in the motor rotor.
In some exemplary embodiments, the outer circumferential surface of the support ring is in abutting contact with the cylinder bore wall, and the piston outer circumferential surface is in clearance with the cylinder bore wall.
In some exemplary embodiments, the piston is fixedly connected to the lead screw at one end, comprising: one end of the piston is connected with the screw rod through interference or threaded connection such as a cylindrical surface.
In some exemplary embodiments, the anti-rotation slider is fixedly connected with the screw rod, including: the anti-rotation sliding block is in interference connection or threaded connection with the screw rod through a spline.
In some exemplary embodiments, the anti-rotation sleeve in mating contact with the anti-rotation slider comprises: the anti-rotation sleeve is provided with a convex rib, the anti-rotation sliding block is provided with a second groove, the convex rib is in fit contact with the second groove, and the anti-rotation sliding block can linearly slide along the axial direction of the convex rib.
In some exemplary embodiments, the anti-rotation sleeve in-line connection with the motor housing comprises: the anti-rotation sleeve is provided with a first protrusion, the motor shell is provided with a first groove, and the first protrusion is embedded into the first groove.
In some exemplary embodiments, the anti-rotation sleeve is in conforming contact with an inner bore wall of a motor rotor comprising: the outer circumference of the anti-rotation sleeve is uniformly provided with second bulges, and the second bulges are in fit contact with the inner hole wall of the motor rotor.
In some exemplary embodiments, the clamping pad is provided with a third protrusion; the third projection of the clamping pad is embedded into the opening of the motor rotor 11.
In some exemplary embodiments, the clamp block engaging the nut includes: the outer circumference of the nut is uniformly provided with a planar surface structure, and the planar part of the clamping cushion block is attached to the planar surface of the nut.
In some exemplary embodiments, the circlip having one end engaged in the motor rotor comprises: the motor rotor is provided with a ring groove, and one end of the elastic retainer ring is clamped in the ring groove of the motor rotor.
In the embodiment of the application, through the anti-torsion combination of the motor rotor and the nut of the ball screw pair and the anti-torsion combination of the anti-rotation sleeve and the motor shell, the screw rod and the motor shell can relatively do not rotate and linearly translate, and when the screw rod and/or the piston return to the original point, the motor shell or a blocking cover fixed with the screw rod and the piston are used for positioning and stopping, and a damping gasket is arranged between the motor shell and the screw rod, so that noise can be reduced; the anti-rotation sleeve can support the motor rotor in a relative rotation manner with the motor rotor, replaces the use of a ball bearing, and reduces the cost; a supporting ring is arranged on the piston to prevent friction between the piston and the cylinder body.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description of the drawings used in the description of the embodiments or the prior art will be provided below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are of some embodiments of the invention and that other drawings may be derived from them without undue effort.
FIG. 1 illustrates a schematic diagram of a build-up pressure architecture for a vehicle braking system according to an embodiment of the present application;
FIG. 2 illustrates a cross-sectional view of A-A of a pressure building structure for a vehicle brake system according to an embodiment of the present application;
FIG. 3 illustrates a partial structural schematic view of a pressure build-up structure for a vehicle brake system according to an embodiment of the present application;
FIG. 4 shows a B-B cross-sectional view of a partial structure of a pressure build-up structure for a vehicle brake system according to an embodiment of the present application;
fig. 5 shows a C-C cross-sectional view of a partial structure of a pressure build-up structure for a vehicle brake system according to an embodiment of the present application.
Description of the figure:
the hydraulic control valve comprises a motor 1, a hydraulic control valve block 2, a cylinder body 3, a piston 4, a supporting ring 5, a screw rod 6, a circlip 7, a gasket 8, a ball bearing 9, a nut 10, a motor rotor 11, an anti-rotation sliding block 12, an elastic gasket 13, a locking screw plug 14, a motor shell 15, an anti-rotation sleeve 16, a clamping cushion block 17, a hydraulic cavity 18, a first groove 19, a first protrusion 20, a convex rib 21, a ring groove 22, a second protrusion 23, a second groove 24, a third protrusion 25 and a plane surface 26.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
The following describes the technical scheme of the embodiment of the present application in detail with reference to the accompanying drawings.
Fig. 1 shows a schematic diagram of a pressure building structure for a vehicle brake system according to an embodiment of the present application, as shown in fig. 1, the pressure building structure for a vehicle brake system according to an embodiment of the present application includes: the hydraulic control valve comprises a motor 1, a hydraulic control valve block 2, a cylinder body 3, a piston 4, a support ring 5, a screw rod 6, a circlip 7, a gasket 8, a ball bearing 9, a nut 10, a motor rotor 11, an anti-rotation sliding block 12, an elastic gasket 13, a locking screw plug 14, a motor shell 15, an anti-rotation sleeve 16, a clamping cushion block 17 and a hydraulic cavity 18; a seal ring 0, wherein,
the motor 1 is fixedly connected with the hydraulic control valve block 2 through bolts; the cylinder body 3 is axially inserted into a cylindrical hole of the hydraulic control valve block 2 and fixed; the piston 4 is axially inserted into the cylinder body 3, and the outer surface of the front end of the piston 4 and the inner cavity surface of the cylinder body 3 form a closed hydraulic cavity 18; the support ring 5 is sleeved on a ring groove arranged on the piston 4, the outer circular surface of the support ring 5 is in fit contact with the inner hole wall of the cylinder body 3, and a gap exists between the outer circular surface of the piston 4 and the inner hole wall of the cylinder body 3; one end of the piston 4 is fixedly connected with the screw rod 6, and comprises: one end of the piston 4 is in interference connection or threaded connection with the screw rod 6 through a cylindrical surface; the screw 6, the nut 10 and the balls form a ball screw pair;
anti-rotation slider 12 is fixedly connected with lead screw 6, includes: the anti-rotation sliding block 12 is in interference connection or threaded connection with the screw rod 6 through a spline; the anti-rotation sleeve 16 is in matched contact with the anti-rotation sliding block 12; the anti-rotation sleeve 16 is axially inserted into a mounting hole at the rear end of the motor shell 15, and the anti-rotation sleeve 16 is connected with the motor shell 15 in an embedded manner; the anti-rotation sleeve 16 is in fit contact with the inner hole wall of the motor rotor 11, and the locking screw plug 14 presses the elastic gasket 13 against the end part of the anti-rotation sleeve 16;
the nut 10 is axially inserted into an inner hole of the motor rotor 11, the clamping cushion block 17 is mounted on the inner hole wall of the motor rotor 11, the clamping cushion block 17 is attached to the nut 10, the gasket 8 is mounted between the nut 10 and the circlip 7 and attached to the end surfaces of the nut 10 and the circlip 7, and one end of the circlip 7 is clamped in the motor rotor 11.
FIG. 2 is a cross-sectional view of A-A of a pressure building structure for a vehicle brake system according to an embodiment of the present application, wherein, as shown in FIG. 2, a first protrusion 20 is provided on an anti-rotation sleeve 16, and a first groove 19 is provided on a motor housing 15; the anti-rotation sleeve 16 is connected with the motor housing 15 in an embedded manner and comprises: the first projection 20 of the anti-rotation sleeve 16 is embedded in the first recess 19 of the motor housing 15.
Fig. 3 is a schematic view of a partial structure of a pressure building structure for a vehicle brake system according to an embodiment of the present application, and as shown in fig. 3, a motor rotor 11 is provided with a ring groove 22; the circlip 7 has one end clamped in the motor rotor 11 comprising: one end of the circlip 7 is clamped in the ring groove 22 of the motor rotor 11.
Fig. 4 is a B-B cross-sectional view of a partial structure of a pressure building structure for a vehicle brake system according to an embodiment of the present application, as shown in fig. 4, an outer circumference of an anti-rotation sleeve 16 is uniformly provided with second protrusions 23, and the attaching contact between the anti-rotation sleeve 16 and an inner hole wall of a motor rotor 11 includes: the second projection 23 of the anti-rotation sleeve 16 is in abutting contact with the inner bore wall of the motor rotor 11.
Be provided with protruding muscle 21 on anti-rotation sleeve 16, be provided with second recess 24 on anti-rotation slider 12, anti-rotation sleeve 16 and anti-rotation slider 12 cooperation contact includes: the rib 21 of the anti-rotation sleeve 16 is in matched contact with the second groove 24 of the anti-rotation sliding block 12, and the anti-rotation sliding block 12 can linearly slide along the axial direction of the rib 21.
FIG. 5 is a C-C cross-sectional view of a partial structure of a pressure building structure for a vehicle brake system of an embodiment of the present application, the clamp pad 17 being provided with a third protrusion 25; the third projection 25 of the clamping pad 17 engages in an opening in the motor rotor 11.
The outer circumference of the nut 10 is uniformly provided with a plane-shaped surface structure 26, and the attaching of the clamping cushion block 17 and the nut 10 comprises the following steps: the flat portion of the clamping pad 17 engages with the flat surface 26 of the nut 10.
In the embodiment of the application, the motor 1 is a power source generated by hydraulic pressure, the clamping cushion block 17 combines the nut 10 and the motor rotor 11 together in a torsion-resistant way, and the elastic retainer ring 7 axially fixes the nut 10 and the motor rotor 11; the motor 1 drives the nut 10 to rotate, the nut 10 rotates to drive the screw rod 6 to do linear translation motion, and the screw rod 6 drives the piston 4 to do reciprocating linear motion in the cylindrical hole of the cylinder body 3. The supporting ring 5 prevents the piston 4 from rubbing against the inner hole wall of the cylinder body 3; the convex ribs 21 arranged on the anti-rotation sleeve 16 position the anti-rotation sliding block 12 to make the anti-rotation sliding block 12 do linear translation, and the anti-rotation sliding block 12 is arranged on the screw rod 6 to limit the rotation of the screw rod 6 so as to make the screw rod 6 do linear motion; the first protrusion 20 arranged on the anti-rotation sleeve 16 is embedded into the first groove 19 arranged on the motor housing 15, so that the anti-rotation sleeve 16 and the motor housing 15 are anti-torsion and axially fixed; the second bulge 23 arranged on the anti-rotation sleeve 16 is in fit contact with the inner hole wall of the motor rotor 11, so that the anti-rotation sleeve 16 and the motor rotor 11 can relatively rotate to support the motor rotor 11; when the piston 4 and/or the screw 6 is retracted, the screw 6 is pressed against the elastic washer 13, so that the screw 6 is positioned at the origin.
The motor 1 drives the nut 10 to rotate according to the instruction sent by the brake booster control unit, the ball screw pair converts the rotation motion of the nut 10 into the linear motion of the screw 6, the screw drives the piston 4 to compress the brake fluid in the hydraulic cavity 18, and the high-pressure brake fluid is controlled to be distributed to the brake cylinders of all wheels through the hydraulic control valve block 2 to generate braking force.
In the embodiment of the application, the ball screw pair may be replaced by a planetary roller screw, and the piston and the screw may be integrally formed or the anti-rotation slider and the screw may be integrally formed.
Different from the shaft sealing mode adopted by the piston and the cylinder in the traditional technical scheme, the piston and the cylinder in the embodiment of the application adopt a hole sealing mode, and the supporting ring plays a role in reducing the abrasion of the piston and the cylinder and ensures that the piston and the cylinder are coaxial; the transmission scheme disclosed by the embodiment of the application is that a motor rotor drives a nut to rotate, and the nut drives a screw rod to do linear motion; the elastic check ring and the nut are relatively static, and the nut is fixed by the elastic check ring; the elastic gasket is fixed with the motor shell, the elastic gasket and the screw rod do not rotate relatively, the return stroke of the screw rod is limited, and the problem of nut return stroke locking is solved; in the embodiment of the application, the locking screw plug is not fixed to the screw rod and the motor rotor, and only the shell is fixed to the elastic gasket; the piston is fixedly connected with the screw rod and is fixed at one end of the screw rod; the anti-rotation sleeve is sleeved on the periphery of the screw rod and used for preventing the screw rod from rotating.
In summary, in the technical scheme recorded in the embodiment of the application, the piston and the cylinder body adopt a hole sealing mode, the sealing ring sleeved on the head part of the piston plays a sealing role, and the supporting ring sleeved on the tail part of the piston plays a role in supporting and reducing abrasion; the ball screw pair adopts nut rotation and screw linear motion; the motor rotor and the nut are anti-torque and axially fixed and are relatively static; the elastic gasket is fixed with the motor shell, the elastic gasket limits the return stroke of the screw rod, and the elastic gasket and the screw rod do not rotate relatively, so that contact and separation without any friction resistance can be realized; the anti-rotation sleeve is used for preventing the screw rod from rotating, is arranged at the rear end of the motor rotor supported by a specific structure on the outer circumference of the anti-rotation sleeve, plays a role in supporting a bearing, and the corresponding motor cancels the bearing at the rear end; the nut is arranged at the front end of the motor, the front end bearing of the motor bears the axial load of the piston, because the acting point generated by hydraulic pressure is arranged at the head of the piston, and the supporting point of the reaction force is the front end bearing or the nut. According to the technical scheme disclosed in claim 1, the distance between the acting force point of the axial force of the piston and the supporting point of the reaction force is shorter, so that the overall rigidity of the ball screw and the piston is better, and the ball screw and the piston are more stable in operation and small in vibration.
According to the pressure building structure for the vehicle braking system, the motor rotor is combined with the nut of the ball screw pair in an anti-torsion way, the anti-rotation sleeve is combined with the motor shell in an anti-torsion way, the screw and the motor shell can relatively do linear translation without rotation, when the screw and/or the piston return to the original point, positioning and stopping are carried out through the motor shell or a blocking cover fixed with the screw or the motor shell, and a damping gasket is arranged between the motor shell and the screw, so that noise can be reduced; the anti-rotation sleeve can support the motor rotor in a relative rotation manner with the motor rotor, replaces the use of a ball bearing, and reduces the cost; a supporting ring is arranged on the piston to prevent friction between the piston and the cylinder body.
In summary, the technical scheme described in the embodiments of the present application adopts a brand new layout and structure, which solves the problems existing in the existing scheme, and simplifies the structure and reduces the cost.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the above-mentioned sequence numbers do not indicate any sequence of positions, and the positions of the components should be determined by their functions and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present invention, and the changes and substitutions are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A pressure building structure for a vehicle brake system, the structure comprising: the hydraulic control device comprises a motor, a hydraulic control valve block, a cylinder body, a piston, a supporting ring, a screw rod, an elastic retainer ring, a gasket, a ball bearing, a nut, a motor rotor, an anti-rotation sliding block, an elastic gasket, a locking screw plug, a motor shell, an anti-rotation sleeve, a clamping cushion block and a hydraulic cavity; wherein,
the motor is fixedly connected with the hydraulic control valve block through bolts; the cylinder body is axially inserted into a cylindrical hole of the hydraulic control valve block and is fixed; the piston is axially inserted into the cylinder body, and the outer surface of the front end of the piston and the inner cavity surface of the cylinder body form a closed hydraulic cavity; the supporting ring is sleeved on the ring groove arranged on the piston; one end of the piston is fixedly connected with the screw rod;
the anti-rotation sliding block is fixedly connected with the screw rod; the anti-rotation sleeve is in fit contact with the anti-rotation sliding block; the anti-rotation sleeve is axially inserted into a mounting hole at the rear end of the motor shell, and is connected with the motor shell in an embedded manner; the anti-rotation sleeve is in fit contact with the inner hole wall of the motor rotor, and the locking screw plug presses the elastic gasket against the end part of the anti-rotation sleeve;
the nut is axially inserted into an inner hole of the motor rotor, the clamping cushion block is mounted on the inner hole wall of the motor rotor, the clamping cushion block is attached to the nut, the gasket is mounted between the nut and the elastic retainer ring and attached to the end faces of the nut and the elastic retainer ring, and one end of the elastic retainer ring is clamped in the motor rotor.
2. The pressure building structure for a vehicle brake system according to claim 1, wherein the outer circumferential surface of the support ring is in abutting contact with the cylinder inner hole wall, and the piston outer circumferential surface has a clearance with the cylinder inner hole wall.
3. The pressure building structure for a vehicle brake system according to claim 1, wherein the piston has one end fixedly connected to the lead screw comprises: one end of the piston is connected with the screw rod through interference or threaded connection such as a cylindrical surface.
4. The pressure building structure for a vehicle brake system according to claim 1, wherein the anti-rotation slider is fixedly connected with the screw rod, comprising: the anti-rotation sliding block is in interference connection or threaded connection with the screw rod through a spline.
5. The pressure building structure for a vehicle brake system according to claim 1, wherein the anti-rotation sleeve is in mating contact with the anti-rotation slider, comprising: the anti-rotation sleeve is provided with a convex rib, the anti-rotation sliding block is provided with a second groove, the convex rib is in fit contact with the second groove, and the anti-rotation sliding block can linearly slide along the axial direction of the convex rib.
6. The pressure building structure for a vehicle brake system according to claim 1, wherein the anti-rotation sleeve is connected with the motor housing in-line, comprising: the anti-rotation sleeve is provided with a first protrusion, the motor shell is provided with a first groove, and the first protrusion is embedded into the first groove.
7. The pressure building structure for a vehicle brake system according to claim 1, wherein the anti-rotation sleeve is in abutting contact with an inner hole wall of the motor rotor, comprising: the outer circumference of the anti-rotation sleeve is uniformly provided with second bulges, and the second bulges are in fit contact with the inner hole wall of the motor rotor.
8. The pressure building structure for a vehicle brake system according to claim 1, wherein the clamp pad is provided with a third protrusion; the third protrusion of the clamping cushion block is embedded into the opening of the motor rotor.
9. The pressure building structure for a vehicle brake system according to claim 1, wherein the clamp pad fitting with the nut includes: the outer circumference of the nut is uniformly provided with a planar surface structure, and the planar part of the clamping cushion block is attached to the planar surface of the nut.
10. The pressure building structure for a vehicle brake system according to claim 1, wherein the circlip one end is caught in the motor rotor includes: the motor rotor is provided with a ring groove, and one end of the elastic retainer ring is clamped in the ring groove of the motor rotor.
CN202311583987.XA 2023-11-24 2023-11-24 Pressure building structure for vehicle braking system Pending CN117818554A (en)

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Application Number Priority Date Filing Date Title
CN202311583987.XA CN117818554A (en) 2023-11-24 2023-11-24 Pressure building structure for vehicle braking system
CN202410457040.2A CN118254753A (en) 2023-11-24 2024-04-16 Pressure building structure for vehicle braking system

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Application Number Priority Date Filing Date Title
CN202311583987.XA CN117818554A (en) 2023-11-24 2023-11-24 Pressure building structure for vehicle braking system

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CN117818554A true CN117818554A (en) 2024-04-05

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CN202410457040.2A Pending CN118254753A (en) 2023-11-24 2024-04-16 Pressure building structure for vehicle braking system

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CN118254753A (en) 2024-06-28

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Application publication date: 20240405