High-efficiency self-pressure-relief steering assist assembly and multi-module eps safety system

Abstract

The application discloses a kind of high-efficiency self pressure relief steering assist assembly and multi-module EPS safety system, and the application relates to the field of steering assist, including steering assembly, including, protection box, protection box center is equipped with lumen, protection box inside hollow has first cavity and second cavity;Lumen is equipped with main shaft, first cavity inside is equipped with flow bucket, and flow bucket bottom is equipped with pressure relief component;Driving assembly, including wheel shaft, and wheel shaft is equipped with helical gear.The ECU system includes basic assist compensation module, damping compensation module, friction compensation module, temperature protection module, end soft stop protection module and automatic return module.Sensing system includes vehicle speed sensor, torque sensor and angle sensor, which avoids efficiency damage caused by external factors through internal structure and steering wheel rotating lever environment, and provides more accurate compensation method and assist data with more calculation compensation modules and more perfect connection method.

Description

Technical Field

[0001] This invention relates to the field of power steering, and in particular to a high-efficiency self-relieving power steering assembly and a multi-module EPS safety system. Background Technology

[0002] With continuous technological advancements, automotive power steering systems have evolved from traditional hydraulic power steering to electro-hydraulic power steering and electric power steering (EPS). Currently, common electric power steering systems primarily use torque sensors to assist the steering column, helping the driver to steer more stably. However, the system is susceptible to interference from its structure and internal environment. For example, lubricating oil may leak from the steering wheel connection, and vehicle vibrations can affect the lifespan of internal components and the power steering calculation process. Furthermore, at maximum steering angle, excessively high air pressure within the steering column can restrict steering, thus affecting power steering and potentially even compromising its effectiveness.

[0003] Furthermore, the current power steering system has fewer electronic control unit (ECU) modules for power steering calculation, resulting in a relatively simple power steering curve that cannot meet the power steering needs under various driving conditions. This leads to low power steering efficiency when facing some harsh driving environments. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this section, the abstract and title of the invention. Such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the problems existing in the current power steering system structure described above and / or in the prior art, such as lubricating oil leakage at the steering wheel connection, vehicle bumps affecting the service life of internal parts and the power steering calculation process, and the fact that if the internal air pressure of the steering wheel column is too high at the maximum steering angle, it will cause the steering wheel to be restricted, thus affecting the power steering or even the power steering itself, this invention is proposed.

[0006] Therefore, the technical problem to be solved by the present invention is to provide a steering assist structure that can simultaneously handle and prevent lubricant leakage and excessive internal air pressure when the steering wheel rotation angle is too large and the torque is at its limit.

[0007] To solve the above technical problems, the present invention provides the following technical solution: a high-efficiency self-releasing power steering assembly, comprising a steering component, including a protective box, wherein the protective box has a cavity at its center, and the protective box has a first cavity and a second cavity hollowed out inside, both of which are penetrated by the cavity;

[0008] The cavity is provided with a main shaft, the main shaft is provided with a damper, the bottom of the damper is provided with a first convex tooth, the first cavity is provided with a flow guide barrel, the bottom of the inner wall of the flow guide barrel is provided with a second convex tooth, the first convex tooth and the second convex tooth are meshed and connected, and the bottom of the flow guide barrel is provided with a pressure relief component.

[0009] A drive assembly includes an axle with a gear hobbing and wheels at both ends.

[0010] As a preferred embodiment of the high-efficiency self-releasing power steering assembly of the present invention, wherein: the outer wall of the guide barrel is closely attached to the inner wall of the first cavity, and the side wall of the guide barrel is symmetrically provided with pressure guiding grooves, the edges of the pressure guiding grooves being pointed protrusions;

[0011] The bottom of the flow guide barrel is a smooth curved surface, and the bottom of the flow guide barrel is provided with an opening.

[0012] As a preferred embodiment of the high-efficiency self-relieving power steering assembly of the present invention, the pressure relief component includes a housing, the housing is fixedly connected to the opening, two sets of guide tubes are symmetrically arranged on the inner wall of the housing, a wear-resistant component is slidably sleeved on the outside of the guide tube, an arc-shaped arch plate is provided on the wear-resistant component, a pair of rubber blocks are symmetrically slidably connected on the arc-shaped arch plate, and the rubber blocks are movably connected to each other by a deceleration spring.

[0013] The outer wall of the shell is symmetrically provided with wide grooves, and each of the wide grooves is provided with a pipe-passing inclined surface in the middle position;

[0014] The main shaft inside the housing is provided with an annular groove, which is parallel to the position of the wear-resistant component.

[0015] As a preferred embodiment of the high-efficiency self-releasing power steering assembly of the present invention, wherein: a storage platform is threadedly connected to the inner wall of the housing, and an arc plate sheet metal is symmetrically provided on the storage platform; an internal sheet metal is elastically connected inside the arc plate sheet metal; and an arc edge is provided on the side of the arc plate sheet metal near the main shaft, and the arc edge can contact the arc-shaped arch plate.

[0016] The rubber block can come into contact with the annular groove through horizontal displacement.

[0017] As a preferred embodiment of the high-efficiency self-releasing power steering assembly described in this invention, wherein: T-shaped tubes are symmetrically arranged on the placement platform, and a vent pipe is elastically slidably connected inside the T-shaped tube, and the vent pipe can pass through the inclined surface of the vent pipe and spring out to the outside of the housing;

[0018] Both the storage platform and the housing are provided with oil outlets inside, and the oil outlets are in close contact with the surface of the spindle.

[0019] The top of the storage platform is a smooth curved surface, and a partition strip is provided around the top of the storage platform.

[0020] As a preferred embodiment of the high-efficiency self-relieving power steering assembly described in this invention, the protective box has pressure relief holes arranged at equal intervals on one end face;

[0021] The protective box is symmetrically provided with L-grooves and pressure outlet holes. The L-grooves are located on both sides of the periphery of the first cavity, and the pressure outlet holes are located below the L-grooves.

[0022] As a preferred embodiment of the high-efficiency self-releasing power steering assembly of the present invention, wherein: a manual unlocking rod is elastically connected in the L-groove, a groove is provided in the pressure outlet hole in a perpendicular direction, a sealing member is elastically connected in the groove, the sealing member can fit tightly with the pressure outlet hole, and the vent pipe can enter the pressure outlet hole, the diameter of the vent pipe is the same as that of the pressure outlet hole;

[0023] A through hole is provided between the L-groove and the pressure outlet hole, the through hole connecting the L-groove and the pressure outlet hole, and an unlocking block is provided at one end of the manual unlocking rod near the pressure relief assembly, the unlocking block being placed inside the through hole;

[0024] The unlocking block has a sloping surface at one end near the sealing member, and the sealing member has a smooth concave surface on the side near the pressure relief component. The vent pipe can enter the pressure outlet and contact the smooth concave surface, and the sloping surface can contact the vent pipe.

[0025] As a preferred embodiment of the high-efficiency self-releasing power steering assembly of the present invention, wherein: a gear is provided on the main shaft, a drive motor is provided in the second cavity, a threaded rod is fixedly connected to the output end of the drive motor, and the end of the threaded rod is meshed with the gear;

[0026] A steering wheel is fixedly connected to one end of the main shaft near the first cavity, and a double-section connecting rod is movably connected to one end of the main shaft near the second cavity. A turbine head is provided at the end of the double-section connecting rod, and the turbine head is meshed with the gear hobbing.

[0027] The beneficial effects of this invention are that, through its internal structure and steering wheel lever environment, it avoids most of the efficiency loss problems caused by external factors in steering assistance.

[0028] Given that the existing power steering systems have fewer electronic control unit modules for power steering calculation, resulting in a relatively simple power steering curve that cannot meet the power steering needs under various driving conditions, thus causing low power steering efficiency in some harsh driving environments, this invention is proposed.

[0029] Therefore, the technical problem to be solved by the present invention is to increase the power assist calculation module in the electronic control unit system and increase the connection between the power assist module and the sensing system to improve the accuracy of the steering assist target value.

[0030] To solve the above technical problems, the present invention provides the following technical solution: a multi-module EPS safety system, including an ECU system placed on top of the damper, wherein the ECU system includes a basic power assist compensation module, a damping compensation module, a friction compensation module, a temperature protection module, an end soft stop protection module, and an automatic return module;

[0031] The sensing system located at the end of the double-joint linkage includes a vehicle speed sensor, a torque sensor, and an angle sensor.

[0032] As a preferred embodiment of the high-efficiency self-relieving power steering assembly and multi-module EPS safety system described in this invention, the vehicle speed sensor is connected to the basic power steering compensation module, the automatic return-to-center module, and the drive motor;

[0033] The torque sensor is connected to the basic power assist compensation module, the end soft stop protection module, and the drive motor;

[0034] The angle sensor is connected to the friction compensation module, the automatic return module, the damping compensation module, the basic assist compensation module, and the drive motor;

[0035] The temperature protection module is connected to the drive motor.

[0036] The beneficial effects of this invention are: more calculation compensation modules and a more complete and comprehensive connection method bring more accurate compensation methods and auxiliary data. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0038] Figure 1 A schematic diagram of the structure of a high-efficiency self-releasing power steering assembly and a multi-module EPS safety system according to an embodiment of the present invention;

[0039] Figure 2 This invention provides an internal structural schematic diagram of a high-efficiency self-releasing power steering assembly and a multi-module EPS safety system according to an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the internal structure of the steering component in a high-efficiency self-releasing power steering assembly according to an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram showing the internal structure of the steering component in a high-efficiency self-releasing power steering assembly according to an embodiment of the present invention;

[0042] Figure 5 A schematic diagram showing the detailed structure of the first cavity and surrounding components in an embodiment of the present invention;

[0043] Figure 6 A top view of the pressure relief component in a high-efficiency self-relieving power steering assembly according to an embodiment of the present invention;

[0044] Figure 7 This is a schematic diagram of the internal structure of the pressure relief component in a high-efficiency self-relieving power steering assembly according to an embodiment of the present invention;

[0045] Figure 8 A schematic diagram of a high-efficiency self-venting power steering assembly with a central loading platform, as provided in one embodiment of the present invention;

[0046] Figure 9 This is a schematic diagram of the drive component in a high-efficiency self-venting power steering assembly according to an embodiment of the present invention;

[0047] Figure 10 The flowchart of a multi-module EPS safety system provided by an embodiment of the present invention is shown.

[0048] In the diagram: Axle, 301; Wheel, 302; Gear hobbing, 301a; Pressure guide groove, 103b; Pressure relief hole, 101d; Housing, 201; Guide tube, 201a; Wear-resistant component, 202; Arc-shaped arch plate, 202a; Rubber block, 202a-1; Deceleration spring, 202a-2; Wide groove, 201b; Through-pipe inclined surface, 201b-1; Circular groove, 102b; Storage platform, 203; Arc plate sheet metal, 203a; Internal sheet metal, 203a-1; Rounded edge, 203a-2; T-tube, 203b; Vent pipe, 203b-1; Pressure outlet hole, 101f; Oil outlet, 204; Partition strip, 203c; L-groove, 101e; Manual unlocking lever, 1 01e-1; Groove, 101f-1; Sealing component, 101f-2; Perforation, 101g; Unlocking block, 101e-2; Sloping surface, 101e-3; Smooth concave surface, 101f-3; Gear, 102c; Drive motor, 104; Threaded rod, 104a; Double-joint connecting rod, 106; Turbine head, 106a; ECU system, 400; Basic power steering compensation module, 401; Damping compensation module, 402; Friction compensation module, 403; Temperature protection module, 404; End stop protection module, 405; Automatic return module, 406; Sensing system, 500; Vehicle speed sensor, 501; Torque sensor, 502; Angle sensor, 503. Detailed Implementation

[0049] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0050] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0051] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0052] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0053] Example 1

[0054] Reference Figure 1 This embodiment provides a high-efficiency self-relieving power steering assembly and a multi-module EPS safety system, including a steering component 100. The steering component 100 is the structural environment in which the entire power steering system is located, and it is also the environment in which oil leakage and pressure instability occur. It includes a protective box 101 for protecting all internal structures. The protective box 101 has a cavity 101a at its center, which runs through the entire interior of the protective box 101. The interior of the protective box 101 is hollowed out to form a first cavity 101b and a second cavity 101c. The first cavity 101b is located at the top, and the second cavity 101c is located at the bottom. The first cavity 101b is a quasi-cylindrical space with the cavity 101a as its axis, and the second cavity 101c is an irregular cavity space. Both the first cavity 101b and the second cavity 101c are passed through by the cavity 101a.

[0055] Furthermore, a main shaft 102 is provided inside the cavity 101a. The main shaft 102 is the so-called steering column. A damper 102a is provided on the main shaft 102. The damper 102a mainly plays a role in damping vibration and is a conventional component of the steering column. However, the damper 102a in our technology has a first protruding tooth 102a-1 on the bottom ring. A guide barrel 103 is provided inside the first cavity 101b. The guide barrel 103 can participate in handling leaking engine oil and depressurization at the same time. It is a key component. A second protruding tooth 103a is provided on the bottom ring of the inner wall of the guide barrel 103. The first protruding tooth 102a-1 and the second protruding tooth 103a are meshed and connected. That is to say, when the steering wheel 105 is turned, the entire guide barrel 103 will also rotate coaxially with the steering wheel 105. A depressurization component 200 is provided at the bottom of the guide barrel 103.

[0056] Furthermore, the drive assembly 300 mainly reflects the effect brought about by the entire steering assembly 100, including the wheel axle 301, which is the bridge between the two wheels 302. The wheel axle 301 is provided with a hobbing gear 301a, and both ends of the wheel axle 301 are provided with wheels 302.

[0057] In detail, the outer wall of the guide barrel 103 is closely attached to the inner wall of the first cavity 101b, forming a closed space. The side wall of the guide barrel 103 is symmetrically provided with pressure guiding grooves 103b, and there is a space without any objects on the back of the guide barrel 103. The pressure relief hole 101d is located on the outer wall of this space. Through process design, when the guide barrel 103 is rotated to 90°, 180°, and 450°, the pressure guiding groove 103b is exactly in this space without any objects. When the pressure difference between the inside and outside is too large, the air pressure inside the first cavity 101b can be quickly discharged, avoiding the problem of unstable air pressure inside the first cavity. The edge of the pressure guiding groove 103b is pointed and protruding. This structure can also scrape the drained oil flowing from top to bottom into the guide barrel 103 while turning, thus completing the collection of the drained oil.

[0058] In detail, the bottom of the guide barrel 103 is a smooth curved surface with a downward indentation, which allows the collected leaked oil to flow out. The bottom of the guide barrel 103 is provided with an opening 103c, which is the final outlet of the oil.

[0059] Example 2

[0060] Reference Figure 5 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that: the pressure relief assembly 200 includes a housing 201, which is a cylinder enclosing the relevant components of the pressure relief assembly 200. The entire pressure relief assembly 200 is located at the lower end of the junction between the cavity 101a and the first cavity 101b. That is, the housing 201 is fixedly connected to the opening 103c and rotates coaxially with the guide barrel 103. Two sets of guide tubes 201a are symmetrically arranged on the inner wall of the housing 201. Wear-resistant components 202 are slidably connected inside the guide tubes 201a. The wear-resistant components 202 are... The U-shaped structure has two rods placed inside the guide tube 201a for displacement, with one rod placed horizontally. The horizontal part is equipped with an arc-shaped arch plate 202a. The curvature of the arc-shaped arch plate 202a is basically consistent with but slightly larger than the diameter of the main shaft 102. A pair of rubber blocks 202a-1 are symmetrically slidably connected on the arc-shaped arch plate 202a. The rubber blocks 202a-1 have a large friction force. The rubber blocks 202a-1 are movably connected by a deceleration spring 202a-2. When the two rubber blocks 202a-1 come into contact with a surface with the same friction force, the deceleration spring 202a-2 will generate a large resistance.

[0061] In detail, the outer wall of the shell 201 is symmetrically provided with wide grooves 201b, and each wide groove 201b is provided with a pipe-passing inclined surface 201b-1 in the middle position. There are two wide grooves 201b, which participate in the pressure relief process. The pipe-passing inclined surface 201b-1 is a slope with a certain inclination angle.

[0062] In detail, the spindle 102 inside the housing 201 is provided with an annular groove 102b. The inner wall of the annular groove 102b is a rough sheet metal material with a certain friction. The annular groove 102b is parallel to the wear-resistant component 202, which means that the annular groove 102b and the wear-resistant component 202 can approach each other under the action of external force.

[0063] Furthermore, a storage platform 203 is threadedly connected to the inner wall of the housing 201. The storage platform 203 is unique in that its threaded connection to the housing 201 is a bidirectional thread. This means that when the steering wheel 105 is turned from the default forward position to either the left or right, the storage platform 203 will rise once. The thread design makes the rising speed relatively slow. The storage platform 203 is symmetrically provided with arc-shaped sheet metal 203a, and the arc-shaped sheet metal 203a is elastically connected to an internal sheet metal 203a-1. The structure allows the curved sheet metal 203a to remain undamaged even under bumpy road conditions, and also prevents the storage platform 203 from shifting. This is an optimized structural choice. The curved sheet metal 203a has a rounded edge 203a-2 on the side near the main shaft 102. This rounded edge 203a-2 is similar to a quarter of a circle. The rounded edge 203a-2 can contact the curved arch plate 202a. When the two contact, the rounded edge 203a-2 will move the curved arch plate 202a out of the guide tube 201a.

[0064] In detail, the rubber block 202a-1 can make contact with the ring groove 102b through horizontal displacement. The resistance generated after contact means that when the steering wheel 105 is at the maximum rotation angle, this part of the structure can help to counteract the power steering and prevent the driver from turning the steering wheel 105 too much and damaging the internal components.

[0065] In detail, the storage platform 203 is symmetrically provided with T-shaped tubes 203b. The horizontal tube part of the T-shaped tube 203b is the main tube body. The vent tube 203b-1 is elastically slidably connected to the T-shaped tube 203b through a spring. The vent tube 203b-1 can pass through the pipe inclined surface 201b-1 and spring out to the outside of the housing 201. During the rotation and lifting process of the entire storage platform 203, the top layer of the placed components is an independent unit and does not rotate. The vent tube 203b-1 is also lifted and moved upward until it reaches the position of the wide slot 201b. It then pops out through the pipe inclined surface 201b-1 and arrives at the subsequent pressure outlet 101f.

[0066] In detail, both the storage platform 203 and the housing 201 are equipped with oil outlets 204. The oil outlets 204 are small and will slowly discharge the oil. The oil outlets 204 are close to the surface of the spindle 102. The discharged oil will slowly flow down the surface of the spindle 102 and reach the joints of the machine body below to continue to provide lubrication and form a secondary use.

[0067] In detail, the top of the storage platform 203 is a smooth curved surface. The concave smooth curved surface facilitates the collection of leaked oil. The top of the storage platform 203 is equipped with a partition strip 203c to prevent the oil from flowing to the outside of the storage platform 203 and remaining inside the structure without circulation.

[0068] Example 3

[0069] Reference Figure 5 This is the third embodiment of the present invention. This embodiment is based on the previous embodiment, and differs from the previous embodiment in that: pressure relief holes 101d are arranged at equal intervals on one end face of the protective box 101; L-grooves 101e and pressure outlet holes 101f are symmetrically arranged inside the protective box 101. L-grooves 101e are located on both sides of the periphery of the first cavity 101b, and pressure outlet holes 101f are located below L-grooves 101e. Both grooves and holes are structures necessary for pressure relief.

[0070] Furthermore, a manual unlocking rod 101e-1 is elastically connected inside the L-groove 101e. The manual unlocking rod 101e-1 is also L-shaped. A spring is provided at the bottom of the L-groove 101e to ensure that the manual unlocking rod 101e-1 can move vertically inside the L-groove 101e. A groove 101f-1 is provided perpendicularly inside the pressure outlet 101f. A sealing component 101f-2 is elastically connected inside the groove 101f-1 through a bottom spring. The sealing component 101f-2 is a cylinder with a hemispherical top. This structure can fit tightly with the pressure outlet 101f.

[0071] Furthermore, a through hole 101g is provided between the L-groove 101e and the pressure outlet 101f. The through hole 101g connects the L-groove 101e and the pressure outlet 101f. The manual unlocking rod 101e-1 has an unlocking block 101e-2 at one end near the pressure relief assembly 200. The unlocking block 101e-2 is placed inside the through hole 101g. When the manual unlocking rod 101e-1 is pressed, the unlocking block 101e-2 moves downward and can enter the pressure outlet 101f. In the default state, the unlocking block 101e-2 is also tightly attached to the inside of the through hole 101g. With the assistance of the sealing part 101f-2 being pushed out in the default state, the pressure outlet 101f is closed, thus controlling the relatively closed environment in the relatively small space of the pressure relief assembly 200.

[0072] In detail, the unlocking block 101e-2 has a sloping surface 101e-3 near the end of the sealing component 101f-2. The direction of the sloping surface 101e-3 facilitates pushing back the object in the pressure outlet 101f. The sealing component 101f-2 has a smooth concave surface 101f-3 near the pressure relief assembly 200. The smooth concave surface 101f-3 is a concave surface at the bottom and a smooth, rounded surface at the top. When the top is subjected to external force, the sealing component 101e-2 will easily be pushed back. 1f-2 retracts into the groove 101f-1, and the internal vent pipe 203b-1 can enter the pressure outlet hole 101f. The vent pipe 203b-1 also has an air hole inside. When the pressure difference between the inside and outside is too large, the air hole will open to complete the pressure relief. The vent pipe 203b-1 can contact the smooth concave surface 101f-3, thereby retracting the sealing part 101f-2 into the groove 101f-1, contacting the closed pressure relief component 200 space, and releasing the air pressure here.

[0073] In detail, the inclined sliding surface 101e-3 can contact the vent pipe 203b-1. Under abnormal driving conditions, high speed or bumps may cause damage to the T-pipe 203b, or excessive internal air pressure. These conditions can cause the vent pipe 203b-1 to get stuck inside the pressure outlet 101f, resulting in significant steering obstruction and affecting driving safety. At this time, the driver can quickly press the manual unlocking lever 101e-1 to force the unlocking block 101e-2 to push the vent pipe 203b-1 back, thus confirming that there is a problem with the exhaust-related components in the pool and that repair is needed.

[0074] In detail, the main shaft 102 is equipped with a gear 102c, which can be driven to rotate, thereby affecting the rotation speed of the main shaft 102 and completing the power steering. The second cavity 101c is equipped with a drive motor 104, and the output end of the drive motor 104 is fixedly connected to a threaded rod 104a. The end of the threaded rod 104a is meshed with the gear 102c. The drive motor 104 is the component that outputs the power steering value. The drive motor 104 is also connected to the entire EPS electronic control unit system ECU. The rotation speed of the threaded rod 104a is the manifestation of the power steering value.

[0075] In detail, a steering wheel 105 is fixedly connected to one end of the main shaft 102 near the first cavity 101b, and a double-section connecting rod 106 is movably connected to one end of the main shaft 102 near the second cavity 101c. The double-section connecting rod 106 completes the rotation of the steering wheel through a special connection method, which is converted into the rotation of the wheel. It is a conventional component of the power steering system. A turbine head 106a is provided at the end of the double-section connecting rod 106. The turbine head 106a is meshed with the hobbing gear 301a to ensure the rotation of the steering wheel 105. The rotation of the turbine head 106a is transmitted to the rotation of the turbine head 106a, thereby affecting the displacement of the hobbing gear 301a, so that the wheel 302 turns.

[0076] Example 4

[0077] Reference Figure 5 This is the third embodiment of the present invention. This embodiment provides a multi-module EPS safety system. This embodiment is based on the previous embodiment, and the difference from the previous embodiment is that: the ECU system 400 is placed on top of the damper 102a. The ECU system is integrated as the electronic control unit of the entire EPS steering assist system and is closely related to every structure or component in the EPS. The ECU system 400 includes: a basic assist compensation module 401 that generates the most basic torque and vehicle speed without other compensation effects; a damping compensation module 402 that improves the stability of the steering wheel when the vehicle is parked; a friction compensation module 403 that compensates for the internal column bearings and rack pressure blocks of the system; a temperature protection module 404 that controls the temperature of the drive motor to not be too high; an end soft stop protection module 405 that prevents the steering wheel inertia from being too large; and an automatic return module 406 that assists in the steering wheel reset effect.

[0078] The sensing system 500, located at the end of the double-joint linkage 106, is mainly used to determine which power-assist states the ECU system needs to activate, and to supply relevant values ​​of the current vehicle condition to the compensation module required for these power-assistance actions. Combined with the set values ​​inside the compensation module, the required compensation current is generated and supplied to the drive motor 104, or no power-assistance action is taken to ensure driving stability.

[0079] The sensing system 500 includes a vehicle speed sensor 501 that senses the current vehicle speed value, a torque sensor 502 that senses the current steering wheel torque, and an angle sensor 503 that senses the current steering wheel rotation angle.

[0080] The vehicle speed sensor 501 is connected to the basic power assist compensation module 401, the automatic return module 406, and the drive motor 104.

[0081] The torque sensor 502 is connected to the basic power assist compensation module 401, the end soft stop protection module 405, and the drive motor 104.

[0082] Angle sensor 503 is connected to friction compensation module 403, automatic return module 406, damping compensation module 402, basic assist compensation module 401, and drive motor 104.

[0083] The temperature protection module 404 is connected to the drive motor 104.

[0084] The basic power steering compensation current is calculated by measuring the current angular velocity through the angle sensor and determining whether it is within the range of greater than -300° and less than 300°. If it is, the current steering wheel angular velocity data is transmitted to the basic power steering compensation module 401. The vehicle speed sensor transmits the current vehicle speed data to the basic power steering compensation module 401, and the torque sensor 502 transmits the current torque data to the basic power steering compensation module 401. Based on the calculation and setting values ​​in the basic power steering compensation module 401, the required basic power steering compensation current is calculated and supplied to the drive motor 104.

[0085] The damping compensation current and friction compensation current are measured by the angle sensor to determine whether the current angular velocity is within the range of -300° / s to 300° / s. If not, the current steering wheel angular velocity data is transmitted to the damping compensation module 402 and the friction compensation module 403. Based on their respective set values, the damping compensation current and friction compensation current are generated and transmitted to the drive motor 104.

[0086] The automatic return assist current is generated by measuring the current vehicle speed through the vehicle speed sensor, transmitting the current vehicle speed data to the automatic return module 406, and combining it with its internal set value to form the automatic return assist current value, which is then transmitted to the drive motor.

[0087] The end-of-line soft stop protection module receives the current steering wheel torque data sent by the torque sensor 502 and performs data detection. If the current torque reaches the minimum torque of the steering wheel, the end-of-line soft stop protection module 405 will stop operating to prevent the driver from continuing to apply force at the limit of the steering wheel rotation angle and affecting the internal structure of the steering wheel. If the current torque is normal, the soft stop power assist will continue.

[0088] The temperature protection module 404 determines whether to provide voltage transformation to the drive motor by measuring whether the current temperature of the drive motor 104 is equal to the highest temperature at which the motor stalls. This reduces the output value of each compensation current, preventing damage to the drive motor 104 and unstable assist value.

[0089] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0090] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0091] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0092] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A high-efficiency self-releasing power steering assembly, characterized in that: include, Steering assembly (100) includes a protective box (101), the protective box (101) having a cavity (101a) at its center, and the protective box (101) having a first cavity (101b) and a second cavity (101c) hollowed out inside, both the first cavity (101b) and the second cavity (101c) being passed through by the cavity (101a); The cavity (101a) is provided with a main shaft (102), and a damper (102a) is provided on the main shaft (102). The bottom of the damper (102a) is provided with a first convex tooth (102a-1). The first cavity (101b) is provided with a flow guide (103). The bottom of the inner wall of the flow guide (103) is provided with a second convex tooth (103a). The first convex tooth (102a-1) and the second convex tooth (103a) are meshed and connected. The bottom of the flow guide (103) is provided with a pressure relief assembly (200). The drive assembly (300) includes an axle (301) with a gear hobbing (301a) on the axle (301) and wheels (302) at both ends of the axle (301). The outer wall of the flow guide barrel (103) is closely attached to the inner wall of the first cavity (101b). The side wall of the flow guide barrel (103) is symmetrically provided with pressure guide grooves (103b), and the edge of the pressure guide groove (103b) is a pointed protrusion. The bottom of the flow guide (103) is a smooth curved surface, and the bottom of the flow guide (103) is provided with an opening (103c). The pressure relief assembly (200) includes a housing (201), which is fixedly connected to the opening (103c). Two sets of guide tubes (201a) are symmetrically arranged on the inner wall of the housing (201). A wear-resistant component (202) is slidably sleeved on the outside of the guide tubes (201a). An arc-shaped arch plate (202a) is provided on the wear-resistant component (202). A pair of rubber blocks (202a-1) are symmetrically slidably connected on the arc-shaped arch plate (202a). The rubber blocks (202a-1) are movably connected to each other by a deceleration spring (202a-2). The outer wall of the shell (201) is symmetrically provided with wide grooves (201b), and each wide groove (201b) is provided with a pipe-passing inclined surface (201b-1) in the middle position. The spindle (102) inside the housing (201) is provided with an annular groove (102b), which is parallel to the position of the wear-resistant component (202).

2. The high-efficiency self-releasing power steering assembly according to claim 1, characterized in that: The inner wall of the housing (201) is threaded with a storage platform (203). The storage platform (203) is symmetrically provided with an arc plate sheet metal (203a). An internal sheet metal (203a-1) is elastically connected inside the arc plate sheet metal (203a). The arc plate sheet metal (203a) is provided with a rounded edge (203a-2) on the side near the main shaft (102). The rounded edge (203a-2) can contact the arc-shaped arch plate (202a). The rubber block (202a-1) can come into contact with the annular groove (102b) through horizontal displacement.

3. The high-efficiency self-releasing power steering assembly according to claim 2, characterized in that: The storage platform (203) is symmetrically provided with T-shaped tubes (203b), and a vent pipe (203b-1) is elastically slidably connected inside the T-shaped tube (203b). The vent pipe (203b-1) can pass through the inclined surface of the pipe (201b-1) and spring out to the outside of the shell (201). Both the storage platform (203) and the housing (201) are provided with oil outlets (204), and the oil outlets (204) are in close contact with the surface of the main shaft (102); The top of the storage platform (203) is a smooth curved surface, and the top of the storage platform (203) is provided with partition strips (203c).

4. The high-efficiency self-releasing power steering assembly according to claim 3, characterized in that: The protective box (101) has pressure relief holes (101d) arranged at equal intervals on one end face. The protective box (101) is symmetrically provided with an L-groove (101e) and a pressure outlet (101f). The L-groove (101e) is located on both sides of the periphery of the first cavity (101b), and the pressure outlet (101f) is located below the L-groove (101e).

5. The high-efficiency self-releasing power steering assembly according to claim 4, characterized in that: A manual unlocking rod (101e-1) is elastically connected inside the L-groove (101e). A groove (101f-1) is provided perpendicularly inside the pressure outlet (101f). A sealing element (101f-2) is elastically connected inside the groove (101f-1). The sealing element (101f-2) can fit tightly with the pressure outlet (101f). The vent pipe (203b-1) can enter the pressure outlet (101f). The diameter of the vent pipe (203b-1) is the same as that of the pressure outlet (101f). A through hole (101g) is provided between the L-groove (101e) and the pressure outlet (101f), the through hole (101g) connecting the L-groove (101e) and the pressure outlet (101f), and an unlocking block (101e-2) is provided at one end of the manual unlocking rod (101e-1) near the pressure relief assembly (200), the unlocking block (101e-2) being placed inside the through hole (101g); The unlocking block (101e-2) has a sloping surface (101e-3) at one end near the sealing member (101f-2), and the sealing member (101f-2) has a smooth concave surface (101f-3) on the side near the pressure relief assembly (200). The vent pipe (203b-1) can enter the pressure outlet hole (101f) and contact the smooth concave surface (101f-3). The sloping surface (101e-3) can contact the vent pipe (203b-1).

6. The high-efficiency self-releasing power steering assembly according to claim 5, characterized in that: The main shaft (102) is provided with a gear (102c), and the second cavity (101c) is provided with a drive motor (104). The output end of the drive motor (104) is fixedly connected with a threaded rod (104a), and the end of the threaded rod (104a) is meshed with the gear (102c). A steering wheel (105) is fixedly connected to one end of the main shaft (102) near the first cavity (101b), and a double-section connecting rod (106) is movably connected to one end of the main shaft (102) near the second cavity (101c). A turbine head (106a) is provided at the end of the double-section connecting rod (106), and the turbine head (106a) is meshed with the gear hobbing (301a).

7. A multi-module EPS safety system, characterized in that: Including the high-efficiency self-venting power steering assembly as described in claim 6, and, An ECU system (400) is placed on top of the damper (102a). The ECU system (400) includes a basic power assist compensation module (401), a damping compensation module (402), a friction compensation module (403), a temperature protection module (404), an end soft stop protection module (405), and an automatic return module (406). The sensing system (500) located at the end of the double-joint link (106) includes a vehicle speed sensor (501), a torque sensor (502), and an angle sensor (503).

8. The multi-module EPS safety system according to claim 7, characterized in that: The vehicle speed sensor (501) is connected to the basic power assist compensation module (401), the automatic return module (406), and the drive motor (104); The torque sensor (502) is connected to the basic power assist compensation module (401), the end soft stop protection module (405), and the drive motor (104); The angle sensor (503) is connected to the friction compensation module (403), the automatic return module (406), the damping compensation module (402), the basic assist compensation module (401), and the drive motor (104). The temperature protection module (404) is connected to the drive motor (104).

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