Supercharging device of electric control booster
By designing an electronically controlled booster booster device including a booster cylinder, a controller, a valve body and a ball screw, the high noise caused by the small diameter of the booster main cylinder of the traditional electronically controlled booster is solved and the cylinder bolting is pierced by the cylinder. The ECU problem achieves a compact, beautiful and reliable sealing structure, simplifying the processing and installation process.
Patent Information
- Application Number
- CN202421142274.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The booster main cylinder of traditional electronic control booster has high noise problems when the diameter is small and the stroke is large, and the cylinder block is too long and may pierce through the ECU controller, resulting in sealing and space arrangement problems; while in the case of large diameters Next, a speed reduction mechanism needs to be added to meet the motor output torque requirements, the structure is complex and the machining accuracy requirements are high.
A booster device including a booster cylinder, a controller, a valve body, a leather bowl, a piston, a hollow motor, a screw shaft and a screw nut is designed. The piston is mounted on the hollow motor and the cylinder body by riveting and bolting connection. The hollow position uses a ball screw and a motor direct drive to avoid a speed reduction mechanism and ensure a sealing cavity and a compact structure.
It realizes the reduction of product axial size, reduces noise, avoids the cylinder block piercing through the ECU controller, simplifies processing and installation processes, improves assembly and durability, and has a compact and beautiful structure and reliable sealing.
Smart Images
Figure CN222360950U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of automobile braking systems, and in particular relates to a pressure boosting device suitable for a novel electronically controlled booster. Background Art
[0002] With the growing development of new energy vehicles, the traditional automotive parts field is facing major innovations. Traditional vacuum boosters are gradually withdrawing from the market and being replaced by electronically controlled booster products. Its working principle is that when working, the motor converts torque into axial thrust through the transmission components, pushing the piston components in the booster master cylinder assembly forward to establish hydraulic pressure and generate braking force. To meet the output fluid volume requirements of the electronically controlled booster, if the booster master cylinder has a small diameter and a large stroke, a motor direct drive can be used without a reduction mechanism, which reduces the high noise caused by the use of a reduction mechanism, but there are problems such as sealing and space layout caused by the supercharged master cylinder body being too long to pierce the ECU controller, and the structure of the booster cylinder is complex, and the equipment and process requirements related to the machining accuracy of the cylinder body are very high. If the diameter of the booster master cylinder is large and the stroke is small, it can prevent the cylinder body from being too long to pierce the ECU controller and cause sealing and space layout problems, but the demand for motor output torque is large, which can only be achieved by adding a reduction mechanism. Summary of the invention
[0003] The utility model provides a booster device for an electric control booster to solve the high noise caused by a speed reduction mechanism, while preventing the booster cylinder from being too small in diameter and the cylinder body from being too long to pierce the ECU and cause sealing and space layout problems.
[0004] The technical solution adopted by the utility model is that it includes a booster cylinder, a controller, a valve body, a leather cup, a piston, a hollow motor, a screw shaft, and a screw nut, wherein the booster cylinder is connected to the valve body by riveting, the controller is connected to the valve body by bolts, the leather cup is installed in a groove of the valve body and is interference-connected with the piston and the valve body, the screw shaft and the screw nut form a ball screw, the ball screw is installed in the hollow motor, the hollow motor is connected to the valve body by bolts, the screw shaft is fixedly connected to the rotor of the hollow motor, and the piston and the screw nut are threaded to prevent rotation.
[0005] The booster cylinder, the piston, the leather cup and the valve body form a sealed cavity.
[0006] The piston is assembled in the hollow position of the hollow motor, the valve body and the booster cylinder.
[0007] The utility model has the advantages of novel structure, the piston is assembled in the hollow position of the hollow motor, valve body and boost cylinder body, which meets the output liquid volume of the electronically controlled booster while greatly reducing the axial size of the product, the piston and the lead screw nut are threadedly connected to prevent rotation, the number of parts is smaller, the motor direct drive does not require a reduction mechanism, the noise is small, the boost main cylinder has a larger diameter and a smaller stroke, and does not pierce the ECU controller to form a bulge, the structure is compact, the appearance is beautiful, the sealing is reliable, the processing and installation processes are simpler, and the assembly and durability are better. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural schematic diagram of the utility model;
[0009] Figure 2 It is a schematic diagram of the connection structure of the piston and the ball screw of the utility model. DETAILED DESCRIPTION
[0010] like Figure 1 , 2 As shown, it includes a booster cylinder 1, a controller 2, a valve body 3, a leather cup 4, a piston 5, a hollow motor 6, a screw shaft 7, and a screw nut 8, wherein the booster cylinder 1 is connected to the valve body 3 by riveting, the controller 2 is connected to the valve body 3 by bolts, the leather cup 4 is installed in the groove of the valve body 3, and is interference-connected with the piston 5 and the valve body 3, the screw shaft 7 and the screw nut 8 form a ball screw, the ball screw is installed in the hollow motor 6, the hollow motor 6 is connected to the valve body 3 by bolts, the screw shaft 7 is fixedly connected to the rotor of the hollow motor 6, and the piston 5 and the screw nut 8 are threaded to prevent rotation.
[0011] The booster cylinder 1, the piston 5, the leather cup 4 and the valve body 3 form a sealed chamber.
[0012] The piston 5 is assembled in the hollow position of the hollow motor 6, the valve body 3 and the booster cylinder 1, which not only meets the output fluid volume of the electronically controlled booster, but also greatly reduces the axial size of the product.
[0013] How it works
[0014] When the electric booster is working, the rotor of the hollow motor 6 rotates forward under the action of the controller input current, and the motor rotor drives the screw shaft 7 of the ball screw to rotate, and the screw nut 8 converts the torque into axial thrust, and the screw nut pushes the piston 5 to move forward axially, and the boost cylinder begins to build pressure to generate braking force. The utility model avoids the high noise caused by the use of a reduction mechanism, and at the same time solves the sealing and space layout problems caused by the boost cylinder diameter being too small and the cylinder body being too long to pierce the ECU.
Claims
1. A booster device for an electronically controlled booster, characterized in that: It includes a booster cylinder, a controller, a valve body, a leather cup, a piston, a hollow motor, a screw shaft and a screw nut, wherein the booster cylinder is connected to the valve body by riveting, the controller is connected to the valve body by bolts, the leather cup is installed in the groove of the valve body and is interference-connected with the piston and the valve body, the screw shaft and the screw nut form a ball screw, the ball screw is installed in the hollow motor, the hollow motor is connected to the valve body by bolts, the screw shaft is fixedly connected to the rotor of the hollow motor, and the piston and the screw nut are threaded to prevent rotation.
2. The boosting device of an electronically controlled booster according to claim 1, characterized in that: The booster cylinder, the piston, the leather cup and the valve body form a sealed cavity.
3. The boosting device of an electronically controlled booster according to claim 1, characterized in that: The piston is assembled in the hollow position of the hollow motor, the valve body and the booster cylinder.