CN117048700A - Structure of corner sensor of electronic power assisting system - Google Patents
Structure of corner sensor of electronic power assisting system Download PDFInfo
- Publication number
- CN117048700A CN117048700A CN202310870612.5A CN202310870612A CN117048700A CN 117048700 A CN117048700 A CN 117048700A CN 202310870612 A CN202310870612 A CN 202310870612A CN 117048700 A CN117048700 A CN 117048700A
- Authority
- CN
- China
- Prior art keywords
- rotor
- ball screw
- screw nut
- pcb
- shell assembly
- 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
Links
- 229920003023 plastic Polymers 0.000 claims abstract description 23
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/021—Determination of steering angle
- B62D15/0235—Determination of steering angle by measuring or deriving directly at the electric power steering motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0403—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by constructional features, e.g. common housing for motor and gear box
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/147—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
Abstract
The invention discloses a structure of an electronic power-assisted system corner sensor, which comprises a shell component, a motor stator, a rotor and a ball screw nut, wherein a PCB is fixedly arranged on the front surface of the shell component through a plastic screw, the ball screw nut is inserted into the front surface of the shell component, the rotor is fixedly sleeved on the ball screw nut through press fitting and a key slot, the electronic stator is fixedly sleeved on the outer surface of the rotor, an induction moving plate is fixedly arranged on the ball screw nut, and the electronic stator and the rotor are matched and kept coaxial. The invention can effectively avoid the interference of the motor to the sensor, saves a complex mechanical structure compared with other sensors, has more direct data feedback, and has the advantages of high efficiency, high integration level, simple and reliable structure, strong universality and accurate control.
Description
Technical Field
The invention relates to the technical field of electronic assistance, in particular to a structure of an electronic assistance system corner sensor.
Background
Along with the development of intelligent technology of automobiles, more and more electric automobiles occupy the market, electric brake booster systems are also widely applied, the principle is that a vacuum booster is cancelled, the effect of boosting is achieved by utilizing electronic control, the direct-drive structure of a motor is relatively simple and small in structure, few in material types and low in cost, and meanwhile, a structure and a mode are needed to recognize a motor rotation angle feedback signal so as to control the motor to realize brake boosting.
Patent document CN112154280a discloses an electric motor driven helical gear mechanism and a mounting device for driving an adjusting element, "the helical gear is used for driving an adjusting element (5), more particularly in the form of an actuator or a piston of a piston-cylinder unit, wherein the adjusting element (5) can be moved back and forth along a path, more particularly an Axis (AX), by means of an electric drive (2) and a helical gear (S, SM), more particularly in the form of a spindle drive, wherein the drive (2) has a rotor (3) or a conveyor (3 ') driven by the drive, the rotor (3) or the conveyor (3') is rotatably mounted in the housing (1) by means of a first bearing (L1) and is connected in a fixed manner to an input (ES) of the helical gear (S, SM) or is formed integrally with the input of the helical gear, and an output (AS) of the helical gear (S, SM) is connected to the adjusting element (5) or is formed integrally with the adjusting element, wherein an anti-twist device (VS) prevents the adjusting element (5) from being arranged in a circumferential direction around the path or the Axis (AX), characterized in that the anti-twist device (VS) is arranged in an end region (VS) of the adjusting element (5), the end region (5 e) is a region of the adjusting element (5) facing away from the bevel gear (S, SM) and/or at least a part of the rotor (3) or the conveyor (3'), the bevel gear mechanism (S, SM) and/or the adjusting element (5) is formed in at least one region with transverse elasticity relative to the axis of rotation between the first support (L1) and the adjusting element (5), wherein the at least one region more particularly has a spring element (FE) or has a region with high elasticity. ".
However, the device has a complex mechanical structure, more parts and lower integration level, and is deficient in realizing brake assistance by precisely controlling the motor.
Disclosure of Invention
The invention aims to provide a structure of an electronic power-assisted system rotation angle sensor so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an electronic power assisting system corner sensor's structure, includes casing subassembly, motor stator, rotor and ball screw nut, there is PCB casing subassembly's front through plastic screw fixed mounting, ball screw nut peg graft in casing subassembly's front, the rotor is fixed cup joint on ball screw nut through pressure equipment and keyway, the fixed cup joint in the surface of rotor of electronic stator, fixed mounting has the response rotor on the ball screw nut, electronic stator and rotor cooperate and keep coaxial.
Preferably, the structure of the housing assembly is composed of a housing assembly plastic part and a housing assembly metal part, wherein the housing assembly metal part is arranged on the outer side of the housing assembly plastic part, and one side of the housing assembly plastic part is fixedly connected with the PCB.
Preferably, the number of the induction moving plates is a plurality, the induction moving plates are located above the PCB, the induction moving plates and the PCB are coaxially distributed, and the PCB is located in a shell assembly plastic part in the enclosing space of the shell assembly metal part.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, the main body drives the induction moving plate to rotate by adopting the motor stator, the rotor and the ball screw nut, the induction moving plate is driven by utilizing the rotation function of the product, in addition, the PCB can transmit the signals of the displacement sensor, the rotation angle sensor device is integrated and jointly transmits the signals of the rotation angle sensor, the structure is simple, the functionality is strong, the integration level is high, the motor can be controlled by identifying the feedback signals of the rotation angle of the motor so as to realize the braking assistance, and the invention has the advantages of high efficiency and accurate control.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the mounting structure of the rotor and ball screw nut of the present invention;
FIG. 3 is a schematic view of the mounting structure of the plastic part of the housing assembly and the metal part of the housing assembly according to the present invention;
FIG. 4 is a schematic diagram of the mounting structure of the stator and rotor of the motor of the present invention;
fig. 5 is a schematic structural view of a PCB and an inductive rotor according to the present invention.
In the figure: 1. a housing assembly; 2. a PCB; 3. a motor stator; 4. a rotor; 5. a ball screw nut; 6. a housing assembly plastic portion; 7. a housing assembly metal portion; 8. and an induction moving plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, an embodiment of the present invention is provided:
the utility model provides an electronic power assisting system corner sensor's structure, including housing assembly 1, motor stator 3, rotor 4 and ball screw nut 5, housing assembly 1's front has PCB2 through plastics screw fixed mounting, ball screw nut 5 peg graft in housing assembly 1's front, rotor 4 cup joints on ball screw nut 5 through pressure equipment and keyway are fixed, the fixed surface of cup jointing in rotor 4 of electronic stator 3, fixed mounting has response movable plate 8 on the ball screw nut 5, electronic stator 3 and rotor 4 cooperate and keep coaxial, the quantity of response movable plate 8 is a plurality of, and response movable plate 8 is located PCB 2's top, response movable plate 8 and PCB2 coaxial distribution, PCB2 is located housing assembly plastics part 6 of housing assembly metal part 7's enclosing the inside space.
The motor stator 3 and the rotor 4 are distributed at one side at intervals from the corner sensor, so that the proper axial distance is kept to avoid interference, and after subsequent power supply, the motor matched with the structure drives the ball screw nut 5 to rotate through the motor stator 3 and the rotor 4, so that the induction moving plate 8 is rotated, the induction moving plate 8 and the PCB2 are restrained by the shell component 1 to keep the induction distance, further, the influence on the control of a mechanism is avoided, wherein the induction moving plate 8 and the PCB2 are coaxially distributed, so that the induction moving plate 8 and the PCB2 can be less restrained by the dimensional precision, and the interference caused by radial rotation of other follow-up pieces is avoided;
the PCB2 is adjacent to the displacement sensor pre-buried in the shell component plastic part 6, and the signal pin of the displacement sensor extends out to be connected with the PCB2, so that the PCB2 can integrate two signals, and the multifunctional portable electronic device has the advantages of simple structure, space saving, strong functionality and high integration level.
The housing assembly 1 is constructed of a housing assembly plastic part 6 and a housing assembly metal part 7, the housing assembly metal part 7 being mounted on the outside of the housing assembly plastic part 6, one side of the housing assembly plastic part 6 being fixedly connected with the PCB 2.
The coaxiality of the corner sensor is ensured by the shell component metal part 7, the interference of the shell component metal part 7 to the corner sensor is isolated by the shell component plastic part 6, and the corner sensor PCB2 is conveniently fixed; in addition, the outer side of the PCB2 can be protected by a shell, and the induction moving plate 8 is fixed on the ball screw nut 5 through welding or punching riveting and gluing, so that the fixation is reliable, and meanwhile, the outer shell component plastic part 6 can weaken the interference of the shell component metal part 7 on the PCB 2.
Working principle: the sensing device is integrated on the PCB2, the PCB2 is fixed on a plastic part 6 of the shell component in the shell component 1 in a plastic screw or buckle mode, and is adjacent to the displacement sensor, then when the motor works, a displacement signal is transmitted to the outside through the PCB2, and a magnetic field generated by the energizing of the motor stator 3 enables the rotor 4 to rotate in a magnetic pole mode, wherein the rotor 4 is fixedly sleeved on the ball screw nut 5 through press fitting and key grooves, the ball screw nut 5 can rotate in a following mode, power is transmitted to the ball screw, the rotary motion is converted into linear motion, so that power transmission is achieved, meanwhile, the induction moving plate 8 rotates along with the ball screw nut 5, a rotation angle sensor integrated inside the PCB2 senses the rotation angle and rotation speed of the moving plate 8 through changing magnetic flux, and transmits signals to the outside, the rotation of the induction moving plate 8 can cut a magnetic field area on the PCB2, and the PCB2 converts the sensing signal to the ECU of the mechanism, and further controls the rotation speed of the motor rotor 3;
in addition, the corner sensor is arranged on the shell component 1, one side of the corner sensor is connected with the displacement sensor, one side of the corner sensor is matched with the induction moving plate 8, signal transmission is realized by the PCB2, the PCB2 is integrated with two signals, and the displacement signal and the corner signal can be transmitted, so that the scheme is arranged to save radial space, optimize axial installation size, avoid the interference of a motor to the sensor, and save complex mechanical structures compared with other components, so that data feedback is more direct.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, 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.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides an electronic power assisting system corner sensor's structure, includes casing subassembly (1), motor stator (3), rotor (4) and ball screw nut (5), its characterized in that: the front of casing subassembly (1) is through plastics screw fixed mounting has PCB (2), ball screw nut (5) peg graft in the front of casing subassembly (1), rotor (4) are fixed cup joints on ball screw nut (5) through pressure equipment and keyway, electronic stator (3) are fixed cup joints in the surface of rotor (4), fixed mounting has response rotor (8) on ball screw nut (5), electronic stator (3) and rotor (4) cooperate and keep coaxial.
2. The structure of an electronic power assist system rotation angle sensor according to claim 1, wherein: the structure of the shell assembly (1) consists of a shell assembly plastic part (6) and a shell assembly metal part (7), wherein the shell assembly metal part (7) is arranged on the outer side of the shell assembly plastic part (6), and one side of the shell assembly plastic part (6) is fixedly connected with the PCB (2).
3. The structure of an electronic power assist system rotation angle sensor according to claim 1, wherein: the number of the induction moving plates (8) is a plurality of, the induction moving plates (8) are located above the PCB (2), the induction moving plates (8) and the PCB (2) are coaxially distributed, and the PCB (2) is located on a shell assembly plastic part (6) in the enclosing space of a shell assembly metal part (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310870612.5A CN117048700A (en) | 2023-07-17 | 2023-07-17 | Structure of corner sensor of electronic power assisting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310870612.5A CN117048700A (en) | 2023-07-17 | 2023-07-17 | Structure of corner sensor of electronic power assisting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117048700A true CN117048700A (en) | 2023-11-14 |
Family
ID=88666982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310870612.5A Pending CN117048700A (en) | 2023-07-17 | 2023-07-17 | Structure of corner sensor of electronic power assisting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117048700A (en) |
-
2023
- 2023-07-17 CN CN202310870612.5A patent/CN117048700A/en active Pending
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