Power steering system driven by power battery and motor mounting apparatus

Abstract

A power steering system driven by a power battery and a motor mounting apparatus applied thereto. The power steering system comprises a steering unit (100). The steering unit (100) comprises a steering shaft (101) and a torque sensor (102) connected to an upper end of the steering shaft (101). A middle section of the steering shaft (101) is connected to a speed reduction mechanism (103). A lower end of the steering shaft (101) is connected to a rack-and-pinion steering gear (104). One end of the speed reduction mechanism (103) is connected to a power assisting assembly (105). The motor mounting apparatus comprises a motor mounting unit (200). The motor mounting unit (200) comprises a mounting frame (201) and a motor mounting assembly (202) connected to one side of the mounting frame (201). The other side of the mounting frame (201) is connected to a locking assembly (204). A second movable mounting plate (203) is mounted on one side of the motor mounting assembly (202). An intermediate transmission assembly (205) is mounted inside the mounting frame (201). According to the power steering system and the motor mounting apparatus, steering assistance can be obtained when a vehicle has not been started, and steering assistance required to avoid a danger can be provided when the vehicle runs abnormally. In addition, a driving motor can be conveniently disassembled and maintained when the vehicle needs to be maintained.

Description

A power steering system driven by a power battery and a motor mounting device Technical Field

[0001] The present invention relates to the technical field of vehicle power steering, and in particular to a power steering system driven by a power battery and a motor mounting device. Background Art

[0002] As one of the most important subsystems of a car, the steering system is constantly evolving. Throughout the history of automobile development, the steering system has gone through four stages: from a purely mechanical steering system (Mechanical Steering, MS), where the driver alone provides the power, to a hydraulic power steering system (Hydraulic Power Steering, HPS), where the engine drives the steering pump to provide the power. Then came the electrically powered hydraulic steering system (Electrically Powered Hydraulic Steering, EHPS), which uses the vehicle's battery to drive the steering pump. Currently, the most widely used system is the electric power steering system (Electric Power Steering, EPS), which uses the vehicle's battery to drive the motor to provide the power directly.

[0003] Current vehicle body batteries have low energy, short battery life, and high self-discharge rates, making them unsuitable for long-duration, high-current applications. Consequently, current electric power steering systems on the market operate only while the vehicle is in motion. When the vehicle is not in motion, the system's assistance is unavailable. Furthermore, if an anomaly occurs during vehicle operation, the vehicle body battery alone cannot provide the steering assistance required for extended periods of time.

[0004] Summary of the Invention

[0005] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the invention.

[0006] The present invention is proposed in view of the problem that the above-mentioned existing vehicles cannot obtain steering assistance when the vehicle is not started, and it is difficult to provide the steering assistance required for long-term risk avoidance when the vehicle is operating abnormally.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a power steering system driven by a power battery, comprising a steering unit, wherein the steering unit comprises a steering shaft and a torque sensor connected to the upper end of the steering shaft, the middle section of the steering shaft is connected to a deceleration mechanism, and the lower end of the steering shaft is connected to a rack and pinion steering gear, and one end of the deceleration mechanism is connected to a power assist assembly.

[0008] As a preferred solution of the power steering system driven by a power battery of the present invention, the power steering assembly includes a power steering motor and a clutch connected to one end of the power steering motor.

[0009] As a preferred solution of the power steering system driven by a power battery of the present invention, the following steps are performed: Step 1: controlling the wheel to return to the center position through the transmission of the steering wheel, the torque sensor, the speed reduction mechanism and the rack and pinion steering gear;

[0010] Step 2: The power-assisting motor receives the torque signal from the steering wheel to drive the clutch to operate, thereby driving the reduction mechanism to operate, thereby providing power for returning the steering wheel to the center position;

[0011] Step 3: When an abnormality occurs, the power battery outputs current to enable the power-assist motor and clutch to provide steering assistance.

[0012] The beneficial effects of the present invention are as follows: by providing a power-assisting component, when the steering wheel is turned, the power-assisting component is powered by a power battery, so that the power-assisting motor drives the clutch to move, thereby providing power assistance to the deceleration mechanism, so as to facilitate the vehicle steering operation; at the same time, when the vehicle is turned off and the steering wheel needs to be straightened, since a power battery is provided, the power-assisting component can be directly powered by the power battery, ensuring that the power-assisting component can provide steering assistance without starting the vehicle; at the same time, when an abnormality occurs during the operation of the vehicle, the power battery can be used to enable the power-assisting component to provide assistance, so as to ensure the steering assistance required for long-term risk avoidance.

[0013] In view of the problem that it is difficult to disassemble and repair the drive motor when maintenance is required during actual use.

[0014] In order to solve the above technical problems, the present invention also provides the following technical solutions: a motor mounting device, including the above-mentioned power steering system driven by a power battery and a motor mounting device, including a motor mounting unit, the motor mounting unit including a mounting frame and a motor mounting assembly connected to one side of the mounting frame, and a locking assembly is connected to the other side of the mounting frame, a second movable mounting plate is installed on one side of the motor mounting assembly, and an intermediate transmission assembly is installed inside the mounting frame.

[0015] As a preferred solution of the pipeline installation device of the present invention, the motor installation assembly includes a first movable installation plate and a limiting block connected to one side of the first movable installation plate, and the other side of the first movable installation plate is connected to a bolt fixing plate.

[0016] As a preferred solution of the pipeline installation device of the present invention, the locking assembly includes a mounting sleeve and a fixing member installed inside the mounting sleeve.

[0017] As a preferred solution of the pipeline installation device of the present invention, the fixing part includes a threaded locking rod and an intermediate transmission push rod connected to the lower end of the threaded locking rod, a locking rod is installed at the lower end of the intermediate transmission push rod, and a reset spring is provided on the outer side of the intermediate transmission push rod.

[0018] As a preferred solution of the pipeline installation device of the present invention, the threaded locking rod and the intermediate transmission push rod are connected in a rotational manner, the locking rod slides inside the installation sleeve, and both sides of the lower end of the locking rod are provided with inclined surfaces.

[0019] As a preferred solution of the pipeline installation device of the present invention, the intermediate transmission assembly includes an intermediate moving frame and a snap-fit ​​groove surface opened at one end of the intermediate moving frame, and the inner end surface of the intermediate moving frame is connected to a rotating connecting rod.

[0020] As a preferred solution of the pipeline installation device of the present invention, the engaging groove surface and the engaging rod are arranged to cooperate with each other.

[0021] The beneficial effects of the present invention are as follows: by providing a motor mounting assembly and a second movable mounting plate, the motor mounting assembly and the second movable mounting plate are used to clamp and fix the power-assisting motor and the clutch. When maintenance is required, the threaded locking rod is rotated to drive the intermediate transmission push rod to move, so as to loosen the limit fixation of the engaging rod. Then, the motor mounting assembly is pulled to directly drive the intermediate movable frame to move, and then the second movable mounting plate is moved by the connection transmission of the rotating connecting rod, so that the motor mounting assembly and the second movable mounting plate loosen the installation fixation of the clutch, and the clutch can be removed. At the same time, the power-assisting motor can be directly removed by loosening the fixing bolts on the bolt fixing plate, making the disassembly and assembly of the power-assisting assembly more convenient and quick, and easy to perform maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] FIG1 is a front view schematic diagram of the steering unit of the present invention.

[0024] FIG2 is a schematic diagram of the overall structure of the motor mounting unit of the present invention.

[0025] FIG3 is a schematic diagram of the connection structure between the mounting bracket and the motor mounting assembly of the present invention.

[0026] FIG4 is a schematic structural diagram of the intermediate transmission assembly of the present invention.

[0027] FIG5 is a schematic cross-sectional view of the connection between the second movable mounting plate and the intermediate transmission assembly of the present invention.

[0028] FIG6 is a schematic cross-sectional view of the connection between the mounting bracket and the locking assembly according to the present invention.

[0029] FIG. 7 is a schematic structural diagram of the locking assembly of the present invention.

[0030] FIG8 is a schematic cross-sectional view of the locking assembly of the present invention. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" 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 various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0034] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0035] Example 1

[0036] Referring to Figure 1, which is a first embodiment of the present invention, a power steering system and a motor mounting device driven by a power battery are provided, including a steering unit 100. The steering unit 100 includes a steering shaft 101 and a torque sensor 102 connected to the upper end of the steering shaft 101. The steering shaft 101 is provided to connect the transmission. The middle section of the steering shaft 101 is connected to a speed reduction mechanism 103, and the lower end of the steering shaft 101 is connected to a rack and pinion steering gear 104. The torque sensor 102, the speed reduction mechanism 103 and the rack and pinion steering gear 104 are connected by the steering shaft 101 to achieve the purpose of controlling the steering of the vehicle. One end of the speed reduction mechanism 103 is connected to a power assist component 105. The power assist component 105 is provided to provide power steering, making it easier for the driver to control the steering of the vehicle.

[0037] The power assist assembly 105 includes a power assist motor 105a and a clutch 105b connected to one end of the power assist motor 105a. The power assist motor 105a is connected by providing a power battery. When steering is required, the power battery is used to provide power for the power assist motor 105a, which is then transmitted through the clutch 105b to provide steering assistance to the deceleration mechanism 103. Due to the provision of the power battery, the power assist assembly 105 can also be used when the vehicle is not started.

[0038] Step 1: The wheels are returned to the center position through the transmission control of the steering wheel, the torque sensor 102, the speed reduction mechanism 103 and the rack and pinion steering gear 104;

[0039] Step 2: The power-assisting motor 105a receives the torque signal from the steering wheel to drive the clutch 105b to operate, thereby driving the speed reduction mechanism 103 to operate, providing power for returning the steering wheel to the center position;

[0040] Step 3: When an abnormality occurs, the power battery outputs current to enable the power-assisting motor 105a and the clutch 105b to provide steering assistance.

[0041] During use: When in use, turn the steering wheel to drive the wheels to steer through the transmission between the steering shaft 101, the torque sensor 102, the reduction mechanism 103 and the rack and pinion steering gear 104. When steering, the power assist component 105 is used to provide steering assistance, making it easier for the driver to steer; when the vehicle is turned off, since a power battery is provided, the power battery can be used to supply energy to the power assist component 105, and the steering wheel and wheels can be assisted in returning to the center without starting the vehicle; when an abnormality occurs during vehicle operation, the power battery can also be used to provide power, and the power assist component 105 can be used to provide optimal steering assistance to ensure the vehicle's handling stability.

[0042] Example 2

[0043] 2 to 5 , a second embodiment of the present invention is shown. This embodiment is further improved on the basis of the first embodiment in that: a motor mounting unit 200 is provided, the motor mounting unit 200 includes a mounting frame 201 and a motor mounting assembly 202 connected to one side of the mounting frame 201, and a locking assembly 204 is connected to the other side of the mounting frame 201, wherein the mounting frame 201 is fixed to one side of the reduction mechanism 103, the motor mounting assembly 202 can move horizontally, and the locking assembly 204 serves as a locking mechanism to play a fixing role, ensuring the stability of the installation of the power assist assembly 105 and preventing the power assist assembly 105 from falling off during use. A second movable mounting plate 203 is installed on one side of the motor mounting assembly 202, and an intermediate transmission assembly 205 is installed inside the mounting frame 201, wherein the second movable mounting plate 203 can move to limit and fix the clutch 105b, and the intermediate transmission assembly 205 is used to link the motor mounting assembly 202 and the second movable mounting plate 203 to ensure that the motor mounting assembly 202 and the second movable mounting plate 203 can move synchronously.

[0044] The motor mounting assembly 202 includes a first movable mounting plate 202a and a limiting block 202b connected to one side of the first movable mounting plate 202a. The first movable mounting plate 202a is connected to the intermediate transmission assembly 205. When the first movable mounting plate 202a moves, the limiting block 202b contacts the clutch 105b to limit the clutch 105b. The other side of the first movable mounting plate 202a is connected to a bolt fixing plate 202c, and bolts are provided on the bolt fixing plate 202c for installing and fixing the power-assisting motor 105a to facilitate the installation and disassembly of the power-assisting motor 105a.

[0045] The intermediate transmission assembly 205 includes an intermediate moving frame 205a and a locking groove surface 205b opened at one end of the intermediate moving frame 205a, wherein the intermediate moving frame 205a is shaped like a square ring, and the intermediate moving frame 205a moves inside the mounting frame 201. At the same time, the intermediate moving frame 205a is fixedly connected to the first moving mounting plate 202a, and the inner end face of the intermediate moving frame 205a is connected with a rotating connecting rod 205c. By utilizing the rotating connection between the intermediate moving frame 205a and the rotating connecting rod 205c and between the rotating connecting rod 205c and the second moving mounting plate 203, when the intermediate moving frame 205a moves, it can drive the second moving mounting plate 203 to move synchronously, so as to facilitate the installation and fixation of the clutch 105b.

[0046] During use: when the power assist assembly 105 needs to be installed, the power assist motor 105a is fixed to one side of the first movable mounting plate 202a with bolts, and the clutch 105b is placed inside the second movable mounting plate 203. Then, the first movable mounting plate 202a is pushed so that the limit block 202b presses against the clutch 105b. At the same time, since the first movable mounting plate 202a is fixedly connected to the intermediate movable frame 205a, the intermediate movable frame 205a is moved, and then the second movable mounting plate 203 is moved through the rotational connection between the intermediate movable frame 205a and the rotating connecting rod 205c and between the rotating connecting rod 205c and the second movable mounting plate 203, and the second movable mounting plate 203 clamps and fixes the clutch 105b, thereby completing the installation and fixation of the power assist assembly 105.

[0047] The remaining structures are the same as those of Example 1.

[0048] Example 3

[0049] 6 to 8 , a third embodiment of the present invention is shown. This embodiment is a further improvement on the basis of the second embodiment in that the locking assembly 204 includes a mounting sleeve 204a and a fixing member 204b installed inside the mounting sleeve 204a. The mounting sleeve 204a is fixedly connected to one side of the mounting frame 201, and the fixing member 204b is arranged inside the mounting sleeve 204a and cooperates with the intermediate transmission assembly 205.

[0050] The fixing part 204b includes a threaded locking rod 204b-1 and an intermediate transmission push rod 204b-2 connected to the lower end of the threaded locking rod 204b-1. The threaded locking rod 204b-1 is connected to the mounting sleeve 204a by a threaded manner, and the intermediate transmission push rod 204b-2 moves inside the mounting sleeve 204a. A locking rod 204b-3 is installed at the lower end of the intermediate transmission push rod 204b-2. The cross-section of the locking rod 204b-3 is square and moves inside the mounting sleeve 204a. A reset spring 204b-4 is provided on the outside of the intermediate transmission push rod 204b-2, and the reset spring 204b-4 is used to reset the locking rod 204b-3.

[0051] The threaded locking rod 204b-1 and the intermediate transmission push rod 204b-2 are connected in a rotational manner. The rotational connection between the threaded locking rod 204b-1 and the intermediate transmission push rod 204b-2 makes it possible for the threaded locking rod 204b-1 to rotate without causing the intermediate transmission push rod 204b-2 to rotate. The engaging rod 204b-3 slides inside the mounting sleeve 204a, and both sides of the lower end of the engaging rod 204b-3 are provided with inclined surfaces. The engaging groove surface 205b and the engaging rod 204b-3 are arranged in cooperation with each other. By utilizing the cooperation between the engaging groove surface 205b and the engaging rod 204b-3, when the intermediate transmission push rod 204b-2 does not limit the engaging rod 204b-3, the engaging groove surface 205b can be moved. When the intermediate transmission push rod 204b-2 limits the engaging rod 204b-3, the intermediate transmission assembly 205 is fixed to play a fixing role.

[0052] During use: When installing the power assist assembly 105, the threaded locking rod 204b-1 is rotated to make the threaded locking rod 204b-1 drive the intermediate transmission rod 204b-2 to move, loosen the limit of the locking rod 204b-3, push the motor mounting assembly 202 to drive the intermediate moving frame 205a to move, and utilize the mutual cooperation between the locking groove surface 205b and the locking rod 204b-3 to make the locking rod 204b-3 move and limit the intermediate moving frame 205a. When the intermediate moving frame 205a moves into place, the threaded locking rod 204b is rotated again. -1, so that the intermediate transmission push rod 204b-2 limits and fixes the locking rod 204b-3, thereby preventing the locking rod 204b-3 from moving, and then fixing the intermediate movable frame 205a to prevent the motor mounting assembly 202 and the second movable mounting plate 203 from moving, thereby completing the installation and fixation of the power assist assembly 105; when the power assist assembly 105 needs to be disassembled, it is only necessary to loosen the fixing piece 204b to pull out the intermediate movable frame 205a, thereby loosening the fixation of the power assist assembly 105 and completing the disassembly of the power assist assembly 105.

[0053] The remaining structures are the same as those of Example 2.

[0054] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially 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 the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0055] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0056] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0057] 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 the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A power steering system driven by a power battery, characterized in that: include, A steering unit (100) comprising a steering shaft (101) and a torque sensor (102) connected to the upper end of the steering shaft (101); a speed reduction mechanism (103) is connected to the middle section of the steering shaft (101); a rack and pinion steering gear (104) is connected to the lower end of the steering shaft (101); and one end of the speed reduction mechanism (103) is connected to a power assist assembly (105).

2. The power steering system driven by a power battery according to claim 1, characterized in that: The power-assisting assembly (105) comprises a power-assisting motor (105a) and a clutch (105b) connected to one end of the power-assisting motor (105a).

3. The power steering system driven by a power battery according to claim 1 or 2, characterized in that: The wheel is returned to the correct position through the transmission control of the steering wheel, the torque sensor (102), the speed reduction mechanism (103) and the gear rack steering gear (104); The power-assisting motor (105a) receives the torque signal of the steering wheel to drive the clutch (105b) to operate, thereby driving the speed reduction mechanism (103) to operate, thereby providing power for returning the steering wheel to the center position; When an abnormality occurs, the power battery outputs current to enable the power-assisting motor (105a) and the clutch (105b) to provide steering assistance.

4. A motor mounting device, characterized in that: A power steering system driven by a power battery as described in any one of claims 1 to 3, comprising a motor mounting unit (200), wherein the motor mounting unit (200) comprises a mounting frame (201) and a motor mounting assembly (202) connected to one side of the mounting frame (201), and a locking assembly (204) is connected to the other side of the mounting frame (201), a second movable mounting plate (203) is installed on one side of the motor mounting assembly (202), and an intermediate transmission assembly (205) is installed inside the mounting frame (201).

5. The motor mounting device according to claim 4, characterized in that: The motor mounting assembly (202) comprises a first movable mounting plate (202a) and a limiting stop block (202b) connected to one side of the first movable mounting plate (202a), and the other side of the first movable mounting plate (202a) is connected to a bolt fixing plate (202c).

6. The motor mounting device according to claim 5, characterized in that: The locking assembly (204) comprises a mounting sleeve (204a) and a fixing member (204b) mounted inside the mounting sleeve (204a).

7. The motor mounting device according to claim 6, characterized in that: The fixing member (204b) comprises a threaded locking rod (204b-1) and an intermediate transmission push rod (204b-2) connected to the lower end of the threaded locking rod (204b-1); a locking rod (204b-3) is installed at the lower end of the intermediate transmission push rod (204b-2); and a return spring (204b-4) is arranged on the outer side of the intermediate transmission push rod (204b-2).

8. The motor mounting device according to claim 7, characterized in that: The threaded locking rod (204b-1) and the intermediate transmission push rod (204b-2) are connected in a rotational manner, the engaging rod (204b-3) slides inside the mounting sleeve (204a), and both sides of the lower end of the engaging rod (204b-3) are provided with inclined surfaces.

9. The motor mounting device according to claim 8, characterized in that: The intermediate transmission assembly (205) comprises an intermediate moving frame (205a) and a snap-fitting groove surface (205b) provided at one end of the intermediate moving frame (205a), and the inner end surface of the intermediate moving frame (205a) is connected to a rotating connecting rod (205c).

10. The motor mounting device according to claim 8 or 9, characterized in that: The engaging groove surface (205b) and the engaging rod (204b-3) are arranged in cooperation with each other.

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