Master cylinder device, integrated brake control system and vehicle

Abstract

The main cylinder device comprises a push rod assembly, a mounting plate and a piston assembly, the mounting plate is provided with a sleeve structure, one end of the push rod assembly penetrates through the sleeve structure to be connected with the piston assembly, and a magnetic part and a sensor are arranged in the piston assembly; the magnetic part is arranged in the length direction of the piston assembly and used for generating a magnetic field signal, the sensor is used for detecting the signal intensity of the magnetic field signal, and the signal intensity is used for determining the current position of the piston assembly. Meanwhile, the invention further provides an integrated brake control system and a vehicle.

Description

Technical Field

[0001] The present application relates to the field of automobile braking, and in particular to a master cylinder device for an automobile, an integrated braking control system, and a vehicle. Background Art

[0002] Against the backdrop of intelligent and electrified vehicles, the demand for intelligent driving is growing rapidly. As an essential actuator for intelligent driving, the integrated brake control system is being installed on an increasingly wide range of vehicles. However, the current production cost of the integrated brake control system is relatively high. How to reduce the production cost of the integrated brake control system is a technical problem that needs to be solved. Summary of the Invention

[0003] In view of this, embodiments of the present application hope to provide a master cylinder device, an integrated brake control system and a vehicle to at least solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0005] According to one aspect of an embodiment of the present application, a master cylinder device is provided, the device comprising:

[0006] A push rod assembly, a mounting plate and a piston assembly, wherein the mounting plate has a sleeve structure, one end of the push rod assembly passes through the sleeve structure and is connected to the piston assembly, and a magnetic part and a sensor are built into the piston assembly, the magnetic part is arranged along the length direction of the piston assembly, and is used to generate a magnetic field signal, and the sensor is used to detect the signal strength of the magnetic field signal, and the signal strength is used to determine the current position of the piston assembly.

[0007] In the above solution, the push rod assembly includes an adapter, a steel pipe and a pedal push rod, wherein the first end of the steel pipe is connected to the adapter, and the second end of the steel pipe is connected to the pedal push rod.

[0008] In the above scheme, the adapter includes: a first spherical portion, a first rod-shaped portion and a first clamping portion, wherein the first spherical portion and the first end of the first rod-shaped portion are integrally formed, the second end of the first rod-shaped portion and the first clamping portion are integrally formed, a first clamping structure is formed on the first clamping portion, and the first end of the steel pipe is provided with a first protrusion, and the first protrusion is clamped and fixed with the first clamping structure.

[0009] In the above scheme, the pedal push rod includes: a second spherical portion, a second rod-shaped portion and a second clamping portion, wherein the second spherical portion and the first end of the second rod-shaped portion are integrally formed, the second end of the second rod-shaped portion is integrally formed with the second clamping portion, a second clamping structure is formed on the second clamping portion, and the second end of the steel pipe is provided with a second protrusion, and the second protrusion is clamped and fixed with the second clamping structure.

[0010] In the above scheme, an anti-slip structure is provided between the pedal push rod and the piston assembly, and the first end of the anti-slip structure has a first through hole; the diameter of the first through hole is smaller than the diameter of the second spherical part; a boss is provided on the inner wall of the piston, the second end of the anti-slip structure abuts against the boss, and the second rod-shaped part passes through the first through hole and is connected to the steel pipe.

[0011] In the above solution, the axial dimension of the mounting plate in the length direction of the sleeve structure is less than or equal to 10 mm, the axial dimension of the sleeve structure is less than or equal to 40 mm, and the outer diameter of the sleeve structure is less than or equal to 32 mm.

[0012] In the above scheme, a dustproof component is provided on the end face of the sleeve structure, and the dustproof component consists of a shock-absorbing ring and a dustproof pad. The outer circle edge of the shock-absorbing ring is sealed with the inner circle of the sleeve structure, and the inner circle edge of the shock-absorbing ring is integrally formed with the edge of the dustproof pad, and a second through hole for the push rod assembly to pass through is formed in the central area of ​​the dustproof pad.

[0013] In the above solution, the piston assembly includes:

[0014] A piston body and a skeleton, wherein the skeleton is located in the piston body and is a cylindrical structure; the magnetic component is installed in the cylindrical wall of the skeleton.

[0015] In the above solution, a positioning ring is further provided in the sleeve structure, and the positioning ring is press-fitted on one end of the piston body.

[0016] According to a second aspect of the present application, there is provided an integrated braking control system, the system comprising:

[0017] A valve block assembly, a pressure building assembly, a fluid reservoir, a pedal feel simulator, and a master cylinder device as described in any one of the above, wherein the master cylinder device, the pressure building assembly, the fluid reservoir, and the pedal feel simulator are all connected to the valve block assembly, and the valve block assembly has a passage connecting the pressure building assembly, the master cylinder device, the fluid reservoir, and the pedal feel simulator.

[0018] According to a third aspect of the present application, a vehicle is provided, comprising the master cylinder device or the integrated brake control system described in any one of the above items.

[0019] The master cylinder device, integrated brake control system, and vehicle provided in this application are a solution for reducing the overall cost of an integrated brake control system or a vehicle by changing the structure and layout of the master cylinder device. Specifically, the master cylinder device is composed of at least a push rod assembly, a mounting plate, and a piston assembly. The mounting plate has a sleeve structure, and one end of the push rod assembly passes through the sleeve structure to connect to the piston assembly. The piston assembly has a built-in magnetic component and a sensor. The sensor is used to detect the magnetic field signal generated by the magnetic component, and the magnetic field signal is used to determine the current position of the piston assembly. In this way, by changing the structure and layout of the master cylinder device, the overall cost of the integrated brake control system and the vehicle can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the master cylinder device in this application;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the master cylinder device and the valve block assembly in this application;

[0022] Figure 3 This is a schematic diagram of the structure of the dustproof component in this application;

[0023] Figure 4 This is a schematic diagram of the structure of the positioning ring in this application;

[0024] Figure 5 This is a schematic diagram of the structural composition of the integrated braking control system in this application. DETAILED DESCRIPTION

[0025] The technical solution of the present application is further elaborated in detail below with reference to the accompanying drawings and specific embodiments.

[0026] The various specific technical features in the various embodiments described in the specific implementation methods can be combined in various ways without contradiction. For example, different implementation methods can be formed by combining different specific technical features. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features in this application will not be described separately.

[0027] It should be noted that the terms "first, second, and third" used in the embodiments of the present application are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It is understood that the terms "first, second, and third" may be interchanged to represent a specific order or precedence, where permitted. It should be understood that the terms "first, second, and third" may be interchanged to represent objects, where appropriate, such that the embodiments of the present application described herein may be implemented in an order other than that illustrated or described herein.

[0028] Figure 1 This is a schematic diagram of the structure of the master cylinder device in this application. Figure 2 This is a schematic diagram of the assembly structure of the master cylinder device and the valve block assembly in this application, as shown in Figure 1 and Figure 2 As shown, the master cylinder device is composed of at least a push rod assembly 10, a mounting plate 20 and a piston assembly 30, wherein the mounting plate 20 has a sleeve structure 201, one end of the push rod assembly 10 passes through the sleeve structure 201 and is connected to the piston assembly 30, and a magnetic part 301 and a sensor 302 are built into the piston assembly 30, the magnetic part 301 is arranged along the length direction of the piston assembly 30, and is used to generate a magnetic field signal, and the sensor 302 is used to detect the signal strength of the magnetic signal, and the signal strength is used to determine the current position of the piston assembly 30.

[0029] Here, the master cylinder device can be applied to an integrated braking control system, in which a relationship table representing different magnetic field strengths and different piston assembly positions can be stored. Based on the currently detected magnetic field signal strength, the current position of the current piston assembly 30 can be known by querying the relationship table.

[0030] Here, the mounting plate 20 is further provided with a mounting portion 202 , through which the master cylinder device can be connected and fixed to the valve block assembly 200 in the integrated brake control system.

[0031] Here, the connection method between the master cylinder assembly and the valve block assembly 200 is not limited, including but not limited to riveting, welding and screwing.

[0032] Here, the axial dimension of the mounting plate 20 in the length direction of the sleeve structure 201 is less than or equal to 10 mm, the axial dimension of the sleeve structure 201 is less than or equal to 40 mm, and the outer diameter of the sleeve structure 201 is less than or equal to 32 mm.

[0033] The motor device provided by the present application not only simplifies the layout structure of the parts, but also reduces the overall size and cost of the motor device.

[0034] like Figure 2 As shown, the push rod assembly 10 includes an adapter 101 , a steel pipe 102 and a pedal push rod 103 , wherein a first end of the steel pipe 102 is connected to the adapter 101 , and a second end of the steel pipe 102 is connected to the pedal push rod 103 .

[0035] The present application designs a push rod assembly for a vehicle pedal into a split structure, which not only facilitates transportation but also reduces the manufacturing cost of the push rod assembly.

[0036] like Figure 2As shown, the adapter 101 may include: a first spherical portion 1011, a first rod-shaped portion 1012 and a first clamping portion 1013, wherein the first spherical portion 1011 and the first end of the first rod-shaped portion 1012 are integrally formed, and the second end of the first rod-shaped portion 1012 and the first clamping portion 1013 are integrally formed.

[0037] Here, a first clamping structure 1014 is formed on the first clamping portion 1013 , and a first protrusion 1021 is provided on the first end of the steel pipe 102 . The first protrusion 1021 is clamped and fixed with the first clamping structure 1014 .

[0038] Here, the specific form of the first clamping structure 1014 is not limited, including but not limited to a clamping slot or a clamping hole.

[0039] Here, the implementation method between the first protrusion 1021 and the first clamping structure 1014 is not limited, including but not limited to being implemented by point riveting.

[0040] The push rod assembly provided in the present application not only has a simple structure, but also shortens the overall length of the push rod, facilitates transportation and replacement, and reduces the overall production cost and transportation cost.

[0041] like Figure 2 As shown, the pedal push rod 103 in the present application includes: a second spherical portion 1031, a second rod-shaped portion 1032 and a second clamping portion 1033, wherein the second spherical portion 1031 and the first end of the second rod-shaped portion 1032 are integrally formed, the second end of the second rod-shaped portion 1032 and the second clamping portion 1033 are integrally formed, a second clamping structure 1034 is formed on the second clamping portion 1033, and the second end of the steel pipe 102 is provided with a second protrusion 1022, and the second protrusion 1022 is clamped and fixed to the second clamping structure 1034.

[0042] Here, the specific form of the second clamping structure 1034 is not limited, including but not limited to a clamping groove or a clamping hole.

[0043] Here, the implementation method between the second protrusion 1022 and the second clamping structure 1034 is not limited, including but not limited to being implemented by spot riveting.

[0044] The push rod assembly provided in the present application not only has a simple structure, but also shortens the overall length of the push rod, facilitates transportation and replacement, and reduces the overall production cost and transportation cost.

[0045] In the present application, an anti-slip structure 40 is provided between the pedal push rod 103 and the piston assembly 30, and the first end of the anti-slip structure 40 has a first through hole (not shown in the figure) for the second rod-shaped portion 1032 to pass through; the diameter of the first through hole is smaller than the diameter of the second spherical portion 1031; a boss 303 is provided on the inner wall of the piston assembly 30, and the second end of the anti-slip structure 40 abuts against the boss 303, and the second rod-shaped portion 1032 passes through the first through hole and is connected to the steel pipe 102.

[0046] The present application provides an anti-slip structure between the pedal push rod and the piston assembly, thereby preventing the pedal push rod from falling off the piston assembly and strengthening the connection strength between the various components in the motor device.

[0047] In the present application, a dustproof component 50 is provided on the end surface of the sleeve structure 201 .

[0048] Figure 3 This is a schematic diagram of the structure of the dustproof component in this application, such as Figure 3 As shown, the dustproof assembly 50 is composed of a shock-absorbing ring 501 and a dustproof pad 502. The outer circle edge of the shock-absorbing ring 501 is sealed with the inner circle of the sleeve structure 201. The inner circle edge of the shock-absorbing ring 501 and the edge of the dustproof pad 502 are integrally formed, and the central area of ​​the dustproof pad 502 is formed with a second through hole 5021 for the push rod assembly 10 to pass through.

[0049] The dustproof assembly proposed in this application is not only simple in structure, but also has good sealing performance and occupies less space, thereby further reducing the manufacturing cost of the motor device.

[0050] In the present application, the piston assembly 30 may further include:

[0051] A piston body 304 and a skeleton 305, wherein the skeleton 305 is located inside the piston body 304 and is a cylindrical structure; the magnetic component 301 is installed in the cylindrical wall of the skeleton 305 and is arranged along the length direction of the cylindrical wall; a positioning ring 2011 is also provided in the sleeve structure 201, and the positioning ring 2011 is pressed onto one end of the piston body 304 for positioning the piston body 304.

[0052] Figure 4 This is a schematic diagram of the structure of the positioning ring in this application, such as Figure 4As shown, the positioning ring 2011 includes an inner ring 20111 and an outer ring 20112. Both the inner ring 20111 and the outer ring 20112 are circular annular structures and are concentrically arranged. The outer edge of the inner ring 20111 and the inner edge of the outer ring 20112 are integrally formed, so that the outer ring 20112 forms a limiting flange for the inner ring 20111. The size of the inner hole of the inner ring 20111 matches the location on the piston body 304 that needs to be fixed.

[0053] Here, the positioning ring is formed by a stamping process, and its material can be steel.

[0054] The positioning ring provided in the present application can further reduce the manufacturing cost of the master cylinder device while satisfying the piston positioning function.

[0055] Figure 5 This is a schematic diagram of the structure of the integrated braking control system in this application. Figure 5 As shown, the system includes:

[0056] The valve block assembly 200, the pressure building assembly 300, the pedal feel simulator 400, the fluid reservoir 500 and the master cylinder device 100, wherein the master cylinder device 100, the pressure building assembly 300, the pedal feel simulator 400 and the fluid reservoir 500 are all connected to the valve block assembly 200, and there is a passage in the valve block assembly 200 that connects the pressure building assembly 300, the master cylinder device 100, the fluid reservoir 500 and the pedal feel simulator 400.

[0057] Here, the pressure building assembly 300 may include a drive assembly, a motor assembly, and a support assembly (all not shown in the figure), wherein the motor assembly is connected to the valve block assembly 200; the valve block assembly 200 has an accommodating cavity, and the support assembly is located on the inner wall of the accommodating cavity and is used to support the drive assembly so that the drive assembly does not contact the inner wall of the accommodating cavity;

[0058] The driving assembly is composed of at least a piston and a ball screw, the piston is connected to the nut of the ball screw, the first end of the ball screw is connected to the rotor assembly of the motor assembly, and the piston is driven to move in the accommodating chamber under the drive of the rotor assembly.

[0059] Here, the valve block assembly 200 includes: an anti-rotation sleeve, a cylinder body and a valve block (all not shown in the figure), wherein the valve block has the accommodating cavity, and the inner wall of the accommodating cavity has multiple grooves for supporting the support assembly;

[0060] The anti-rotation sleeve is fixed on the valve block, and the ribs on the inner wall of the anti-rotation sleeve are in cooperation with the outer surface of the nut on the ball screw;

[0061] The cylinder body is fixed on the valve block and connected to one end of the piston; the cylinder body has a chamber, and the chamber is communicated with the accommodating chamber.

[0062] Here, the support assembly consists of at least a main leather cup, a secondary leather cup and a sliding bearing, wherein the main leather cup, the secondary leather cup and the sliding bearing are respectively installed in the corresponding second grooves on the valve block, and the sliding bearing is located between the main leather cup and the secondary leather cup.

[0063] Here, the motor assembly is composed of at least a rotor assembly, a stator assembly, an end cover assembly and a casing, wherein the rotor assembly and the stator assembly are both arranged in the casing, the stator assembly is used to generate a first magnetic field, and the center portion of the stator assembly has a second through hole for the rotor assembly to pass through; the first end of the rotor assembly is connected to the casing through the second through hole, the rotor assembly is used to generate a second magnetic field, the second magnetic field interacts with the first magnetic field to generate a rotational force, and the rotational force is used to drive the ball screw to rotate; the end cover assembly is pressed onto the second end of the rotor assembly and is connected to the valve block assembly 200.

[0064] Here, the integrated brake control system also includes an ECU (Electronic Control Unit) 600, which is connected to the valve block assembly 200 and is used to collect vehicle status data (such as engine speed, temperature, etc.) through sensors on the valve block assembly 200, and output instructions to control actuators (such as injectors and ignition systems) after processing.

[0065] It should be noted that the motor device in the integrated brake control system provided in the above embodiment is the same as the above Figures 1 to 4 The provided motor device belongs to the same concept, and the specific implementation process can refer to the above-mentioned embodiment of the motor device, which will not be repeated here.

[0066] The present application also provides a vehicle, which includes but is not limited to a car, a van, and a truck. Figures 1 to 4 The motor unit shown.

[0067] In the several embodiments provided in this application, it should be understood that the disclosed devices and systems can be implemented in other ways. The device embodiments described above are merely illustrative. In addition, the features disclosed in the several device or system embodiments provided in this application can be arbitrarily combined to obtain new device or system embodiments without conflict.

[0068] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A master cylinder device, characterized in that: The device comprises: A push rod assembly, a mounting plate and a piston assembly, wherein the mounting plate has a sleeve structure, one end of the push rod assembly passes through the sleeve structure and is connected to the piston assembly, and a magnetic part and a sensor are built into the piston assembly, the magnetic part is arranged along the length direction of the piston assembly, and is used to generate a magnetic field signal, and the sensor is used to detect the signal strength of the magnetic field signal, and the signal strength is used to determine the current position of the piston assembly.

2. The device according to claim 1, characterized in that The push rod assembly includes an adapter, a steel pipe and a pedal push rod, wherein a first end of the steel pipe is connected to the adapter, and a second end of the steel pipe is connected to the pedal push rod.

3. The device according to claim 2, characterized in that The adapter includes: a first spherical portion, a first rod-shaped portion and a first clamping portion, wherein the first spherical portion and the first end of the first rod-shaped portion are integrally formed, the second end of the first rod-shaped portion and the first clamping portion are integrally formed, a first clamping structure is formed on the first clamping portion, and the first end of the steel pipe is provided with a first protrusion, which is engaged and fixed with the first clamping structure.

4. The device according to claim 2, characterized in that The pedal push rod includes: a second spherical portion, a second rod-shaped portion and a second clamping portion, wherein the second spherical portion and the first end of the second rod-shaped portion are integrally formed, the second end of the second rod-shaped portion and the second clamping portion are integrally formed, a second clamping structure is formed on the second clamping portion, and the second end of the steel pipe is provided with a second protrusion, and the second protrusion is clamped and fixed to the second clamping structure.

5. The device according to claim 4, characterized in that An anti-slip structure is provided between the pedal push rod and the piston assembly, and the first end of the anti-slip structure has a first through hole; the diameter of the first through hole is smaller than the diameter of the second spherical part; a boss is provided on the inner wall of the piston assembly, the second end of the anti-slip structure abuts against the boss, and the second rod-shaped part passes through the first through hole and is connected to the steel pipe.

6. The device according to claim 1, characterized in that The axial dimension of the mounting plate in the length direction of the sleeve structure is less than or equal to 10 mm, the axial dimension of the sleeve structure is less than or equal to 40 mm, and the outer diameter of the sleeve structure is less than or equal to 32 mm.

7. The device according to claim 1, characterized in that A dustproof assembly is provided on the end face of the sleeve structure, and the dustproof assembly consists of a shock-absorbing ring and a dustproof pad. The outer circle edge of the shock-absorbing ring is sealed with the inner circle of the sleeve structure, and the inner circle edge of the shock-absorbing ring is integrally formed with the edge of the dustproof pad, and a second through hole for the push rod assembly to pass through is formed in the central area of ​​the dustproof pad.

8. The device according to claim 1, characterized in that The piston assembly comprises: A piston body and a frame, wherein the frame is located in the piston body and is a cylindrical structure; the magnetic member is installed in the cylindrical wall of the frame; A positioning ring is further provided in the sleeve structure and is press-fitted onto one end of the piston body.

9. An integrated braking control system, characterized in that: The system comprises: A valve block assembly, a pressure building assembly, a fluid reservoir, a pedal feel simulator, and a master cylinder device as described in any one of claims 1 to 8, wherein the master cylinder device, the pressure building assembly, the fluid reservoir, and the pedal feel simulator are all connected to the valve block assembly, and the valve block assembly has a passage connecting the pressure building assembly, the master cylinder device, the fluid reservoir, and the pedal feel simulator.

10. A vehicle, characterized in that: The vehicle includes the master cylinder device according to any one of claims 1 to 8, or the integrated brake control system according to claim 9.

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