New energy vehicle gear steering mechanism

Abstract

New energy vehicle gear steering mechanism, including an input mechanism, a first output mechanism and a second output mechanism, wherein the input mechanism is separately arranged from the first output mechanism and the second output mechanism. The input mechanism includes a steering shaft and a reverse transmission component. The steering shaft is connected to the vehicle steering wheel, and the reverse transmission component is connected to the steering shaft for transmission. A steering sensor is installed on the steering shaft, and the steering sensor is electrically connected to the vehicle information processing system. Both the first output mechanism and the second output mechanism include a pull rod and a control component. The pull rod is axially movably installed on the control component, and the control component is electrically connected to the vehicle information processing system. Compared with the prior art, the present application effectively reduces the wear of mechanisms such as gears, greatly simplifies the structural composition, and is beneficial to simplifying the design of the vehicle body system layout. Moreover, it can absorb the reverse impact through a hydraulic pump to protect the driver.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy vehicle steering systems, and particularly relates to a new energy vehicle gear steering mechanism. Background Art

[0002] The steering system is one of the important subsystems of an automobile. The quality of its performance directly determines the handling stability of the automobile. As an important connection tool between people and the automobile, it has been updated with the overall development of the automobile and the emergence of new technologies. It has mainly gone through four stages: a pure mechanical steering system, a hydraulic power steering system, an electro-hydraulic power steering system, and the currently widely used electric power steering system.

[0003] In the current electric power steering systems on the market, the basic transmission structure is mainly a mechanical transmission structure such as a rack and pinion type or a worm and worm wheel type, which converts the steering signal of the input mechanism including the steering wheel into a moving signal of the output mechanism to pull the wheel to deflect and achieve the purpose of steering. The following problems exist: 1. The input mechanism and the output mechanism are connected and driven through a mechanical structure, resulting in relatively large mechanical wear and requiring frequent maintenance. 2. The reverse efficiency is relatively high, and it is necessary to absorb the impact energy by setting shock absorbers and other means. 3. The structure is complex, occupying a relatively large space in the vehicle body structure distribution, increasing the design difficulty of the vehicle system layout.

[0004] Therefore, based on some of the above existing technologies, the present application has been further designed and improved. Summary of the Invention

[0005] Aiming at the above deficiencies in the prior art, the present application provides a new energy vehicle gear steering mechanism, which separates the input mechanism and the output mechanism, converts the steering signal of the input mechanism into an electric signal to drive the motor to control the operation of the output mechanism, effectively reduces the wear of mechanisms such as gears, greatly simplifies the structural composition, and is beneficial to simplifying the design of the vehicle body system layout. And it can absorb the reverse impact through a hydraulic pump to protect the driver.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions.

[0007] The new energy vehicle gear steering mechanism includes an input mechanism, a first output mechanism, and a second output mechanism, and the input mechanism is separated from the first output mechanism and the second output mechanism.

[0008] The input mechanism includes a steering shaft and a reverse transmission assembly. The steering shaft is connected to the vehicle steering wheel, and the reverse transmission assembly is connected to the steering shaft for transmission. A steering sensor is installed on the steering shaft, and the steering sensor is electrically connected to the information processing system of the vehicle. Both the first output mechanism and the second output mechanism include a pull rod and a control assembly. The pull rod is axially movably installed on the control assembly, and the control assembly is electrically connected to the information processing system of the vehicle. The input mechanism and the output mechanism of the present application are separately arranged, which greatly simplifies the structure compared with the prior art and effectively reduces the wear of gear teeth and shafts.

[0009] In a preferred embodiment, the reverse transmission assembly includes a reverse transmission motor and a clutch. The motor shaft of the reverse transmission motor is sleeved at one end of the clutch, and the other end of the clutch is sleeved with a transition shaft. A transition gear is installed on the transition shaft, and the transition gear meshes with a reverse transmission gear, and the reverse transmission gear is installed on the steering shaft. The reverse transmission assembly is used to transmit the reverse impact of the ground on the wheels to the steering wheel in a simulated manner to ensure that the vehicle owner has a clear perception of the road conditions.

[0010] In a preferred embodiment, the clutch includes an assembly base, an expansion rod is installed on the assembly base, an assembly ring is assembled at the end of the expansion rod, and a clutch sleeve is assembled in the assembly ring. The two ends of the clutch sleeve are respectively a transition end and a motor end. The transition shaft is assembled in the transition end, and the motor shaft is assembled in the motor end. The clutch is used to control the power transmission and cut-off between the reverse transmission motor and the transition shaft.

[0011] In a preferred embodiment, a limit protrusion is provided on the inner wall of the transition end, and a limit sliding groove for cooperating with the limit protrusion is provided on the transition shaft. The limit protrusion is always in the limit sliding groove during the sliding process, so that the clutch is always connected to the transition shaft for transmission, avoiding the relative offset of the clutch sleeve relative to the transition shaft caused by vibration.

[0012] In a preferred embodiment, an end block is provided in the motor end, a limiting post is provided on the end block, and a limiting sliding groove for cooperating with the limiting post is provided on the motor shaft. The limiting post is always in the limiting sliding groove during the sliding process, so that the clutch is always coaxially assembled with the motor shaft during the clutch process, avoiding the relative offset of the clutch sleeve relative to the motor shaft caused by vibration.

[0013] In a preferred embodiment, a clutch engaging tooth is axially provided on the side surface of the limiting post, and a motor engaging tooth for cooperating with the clutch engaging tooth is provided on the motor shaft. This design is used to realize the clutch between the clutch sleeve and the motor shaft.

[0014] In a preferred embodiment, the pull rod includes a hydraulic cylinder shaft and a pull rod sleeved inside the hydraulic cylinder shaft. A hydraulic cavity is provided inside the hydraulic cylinder shaft. The pull rod extends into the hydraulic cavity and is provided with a piston at its end. The piston divides the hydraulic cavity into cavity A and cavity B. When the wheel receives a reverse impact force from the ground, the pull rod retracts to prevent the reverse impact force from being transmitted to the control component and damaging the control component.

[0015] In a preferred embodiment, a hydraulic pump is provided on one side of the hydraulic cylinder shaft. Cavity A and cavity B are connected to the hydraulic pump through oil pipes, and the hydraulic pump is electrically connected to the information processing system of the vehicle. The hydraulic pump is used to transmit the oil pressure signal during reverse transmission to the information processing system and balance the oil in cavity A and cavity B.

[0016] In a preferred embodiment, the control component includes a control seat. Internal threads are provided inside the control seat, and external threads are provided on the side of the hydraulic cylinder shaft. The control seat is assembled with the hydraulic cylinder shaft by means of the engagement of the internal threads and the external threads. The control seat is used to control the axial movement of the pull rod to achieve the steering function.

[0017] In a preferred embodiment, the control component further includes a control motor, which is electrically connected to the information processing system of the vehicle. The control motor is connected with a control gear, and gear teeth are provided around the control seat. The control gear meshes and drives with the gear teeth. The control motor is used to provide power for the control seat.

[0018] Compared with the prior art, the present application has the following beneficial effects: A gear steering mechanism for a new energy vehicle is provided. The input mechanism and the output mechanism are separately arranged. The steering signal of the input mechanism is converted into an electrical signal to drive the motor to control the operation of the output mechanism, effectively reducing the wear of mechanisms such as gears and greatly simplifying the structural composition, which is beneficial to simplifying the design of the vehicle body system layout. And it can absorb the reverse impact through the hydraulic pump to protect the driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Stereoscopic schematic diagram of the embodiment Figure 1 。

[0020] Figure 2 Stereoscopic schematic diagram of the embodiment Figure 2 。

[0021] Figure 3 For Figure 2 Partial enlarged view at A in

[0022] Figure 4 Stereoscopic schematic diagram of the first output mechanism / second output mechanism.

[0023] Figure 5It is a schematic structural diagram of a pull rod.

[0024] Figure 6 It is a schematic structural diagram of a control component.

[0025] Figure 7 It is a schematic structural diagram of a transition shaft.

[0026] Figure 8 It is a schematic structural diagram of a reverse drive motor.

[0027] Figure 9 It is a three-dimensional schematic of a clutch sleeve Figure 1 .

[0028] Figure 10 It is a three-dimensional schematic of a clutch sleeve Figure 2 .

[0029] Figure 11 It is a sectional schematic diagram of a clutch sleeve.

[0030] The following is the description of the marks in the attached drawings of the specification:

[0031] 1. Input mechanism;

[0032] 2. First output mechanism;

[0033] 3. Second output mechanism;

[0034] 30. Steering shaft; 31. Steering wheel; 32. Steering sensor;

[0035] 40. Reverse drive assembly; 41. Reverse drive motor; 42. Motor shaft; 421. Limit chute; 422. Motor engagement teeth; 43. Transition shaft; 431. Limit chute; 44. Transition gear; 45. Reverse drive gear;

[0036] 50. Clutch; 51. Assembly base; 52. Telescopic rod; 53. Assembly ring; 54. Clutch sleeve; 541. Transition end; 542. Motor end; 543. Limit protrusion; 544. End block; 545. Limit post; 546. Clutch engagement teeth;

[0037] 60. Pull rod; 61. Hydraulic cylinder shaft; 611. Chamber A; 612. Chamber B; 613. External thread; 62. Pulling rod; 63. Piston; 64. Hydraulic pump; 65. Oil pipe;

[0038] 70. Control component; 71. Control seat; 711. Internal thread; 712. Teeth; 72. Control motor; 73. Control gear. Detailed implementation manners

[0039] The present invention will be further described in detail below in conjunction with the attached drawings and specific implementation manners.

[0040] In the following embodiments, the same or similar reference numerals throughout denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and thus should not be construed as limiting the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the present invention, unless otherwise clearly specified and defined, the terms: installation, connection, connection, etc. should be understood in a broad sense, and those of ordinary skill in the art can understand the specific meanings of the above terms in this practical application according to specific circumstances.

[0042] Reference Figures 1 to 11 , a gear steering mechanism for a new energy vehicle, includes an input mechanism 1, a first output mechanism 2, and a second output mechanism 3. The input mechanism 1 is separately arranged from the first output mechanism 2 and the second output mechanism 3. The operation mode of this embodiment is that the input mechanism 1 transmits a steering signal to an information processing system, and the information processing system controls the first output mechanism 2 and the second output mechanism 3 to pull the wheels to achieve steering.

[0043] In this embodiment, the input mechanism 1 includes a steering shaft 30 and a reverse transmission assembly 40. The steering shaft 30 is connected to an automotive steering wheel 31, and the reverse transmission assembly 40 is connected to the steering shaft 30 for transmission. A steering sensor 32 is installed on the steering shaft 30, and the steering sensor 32 is electrically connected to the information processing system of the vehicle.

[0044] Among them, the reverse transmission assembly 40 includes a reverse transmission motor 41 and a clutch 50. The motor shaft 42 of the reverse transmission motor 41 is sleeved at one end of the clutch 50, and the other end of the clutch 50 is sleeved with a transition shaft 43. A transition gear 44 is installed on the transition shaft 43, and the transition gear 44 meshes with a reverse transmission gear 45. The reverse transmission gear 45 is installed on the steering shaft 30. The reverse transmission assembly 40 is used to transmit the reverse impact of the ground on the wheels to the steering wheel 31 in a simulated manner to ensure that the vehicle owner has a clear perception of the road conditions.

[0045] Among them, the clutch 50 is used to control the power transmission and cut-off between the reverse drive motor 41 and the intermediate shaft 43. Its specific structure is as follows: It includes an assembly base 51, on which a telescopic rod 52 is installed. The end of the telescopic rod 52 is equipped with an assembly ring 53, and a clutch sleeve 54 is assembled inside the assembly ring 53.

[0046] Specifically, the two ends of the clutch sleeve 54 are respectively a transition end 541 and a motor end 542. The intermediate shaft 43 is assembled inside the transition end 541, and the motor shaft 42 is assembled inside the motor end 542. A limiting protrusion 543 is provided on the inner wall of the transition end 541, and a limiting chute 431 for cooperating with the limiting protrusion 543 is provided on the intermediate shaft 43. The limiting protrusion 543 is always located inside the limiting chute 431 during the sliding process, so that the clutch 50 is always connected and transmitted with the intermediate shaft 43, avoiding the clutch sleeve 54 shifting relative to the intermediate shaft 43 due to vibration. A terminal block 544 is provided inside the motor end 542, and a limiting post 545 is provided on the terminal block 544. A limiting chute 421 for cooperating with the limiting post 545 is provided on the motor shaft 42. The limiting post 545 is always located inside the limiting chute 421 during the sliding process, so that the clutch 50 is always coaxially assembled with the motor shaft 42 during the clutch process, avoiding the clutch sleeve 54 shifting relative to the motor shaft 42 due to vibration. A clutch engagement tooth 546 arranged axially is provided on the side of the limiting post 545, and a motor engagement tooth 422 for cooperating with the clutch engagement tooth 546 is provided on the motor shaft 42. This design is used to realize the clutch between the clutch sleeve 54 and the motor shaft 42.

[0047] In this embodiment, both the first output mechanism 2 and the second output mechanism 3 include a pull rod 60 and a control component 70. The pull rod 60 is axially movably installed on the control component 70, and the control component 70 is electrically connected to the information processing system of the vehicle.

[0048] Among them, the pull rod 60 is a telescopic hydraulic rod, and its structure is as follows: It includes a hydraulic cylinder shaft 61 and a pull rod 62 sleeved inside the hydraulic cylinder shaft 61. The pull rod 62 is connected to the vehicle wheel hub, and the wheel is deflected by pulling the pull rod 62. A hydraulic cavity is provided inside the hydraulic cylinder shaft 61. The pull rod 62 extends into the hydraulic cavity and is provided with a piston 63 at the end. The piston 63 divides the hydraulic cavity into an A cavity 611 and a B cavity 612. When the wheel receives a reverse impact force from the ground, the pull rod 62 retracts to prevent the reverse impact force from being transmitted to the control component 70 and damaging the control component 70. A hydraulic pump 64 is provided on one side of the hydraulic cylinder shaft 61. The A cavity 611 and the B cavity 612 are connected to the hydraulic pump 64 through a hydraulic pipe 65, and the hydraulic pump 64 is electrically connected to the information processing system of the vehicle. The hydraulic pump 64 is used to transmit the oil pressure signal during reverse transmission to the information processing system and balance the oil in the A cavity 611 and the B cavity 612.

[0049] The structure of the control component 70 in this embodiment is specifically as follows: It includes a control seat 71. An internal thread 711 is provided inside the control seat 71. An external thread 613 is provided on the side of the hydraulic cylinder shaft 61. The control seat 71 is assembled with the hydraulic cylinder shaft 61 by means of mating engagement of the internal thread 711 and the external thread 613. The control seat 71 is used to control the axial movement of the pull rod 60 to achieve the steering function. The control component 70 further includes a control motor 72, and the control motor 72 is electrically connected to the information processing system of the vehicle. The control motor 72 is connected with a control gear 73. Gear teeth 712 are provided in a ring on the control seat 71, and the control gear 73 is in meshing transmission with the gear teeth 712. The control motor 72 is used to provide power for the control seat 71.

[0050] The new energy vehicle gear steering mechanism described in this embodiment cooperates with the vehicle information processing system to achieve vehicle steering, and through the reverse transmission component 40, it simulates the reverse impact received by the wheels to give the driver sufficient feedback to ensure the road feel of the road. Its working principle is as follows:

[0051] In the default state, the piston 63 is in the middle of the hydraulic cylinder. In the steering state, the hydraulic pump 64 does not work. The pull rod 60 can be regarded as a rigid whole, and the control component 70 controls the axial movement of the pull rod 60. In the reverse transmission state, the hydraulic pump 64 works to adapt to the extension or retraction of the pull rod 62, and the control component 70 does not work.

[0052] Steering: The driver turns the steering wheel 31, and the steering shaft 30 connected to the steering wheel 31 rotates. The steering sensor 32 transmits the steering signal to the vehicle information processing system. The information processing system sends a steering signal to the first output mechanism 2 and the second output mechanism 3. The control component 70 controls the axial movement of the pull rod 60, and the pull rod 62 pulls the wheel to deflect. At this time, the clutch 50 is in the closed state, and the transmission between the motor shaft 42 and the intermediate shaft 43 is in the cut-off state.

[0053] Simulated reverse drive: When the wheel receives a reverse impact from the ground, the pull rod 62 is subjected to an impact force and has a tendency to retract or extend. The oil pressures in chamber A 611 and chamber B 612 change, and the hydraulic pump 64 balances the oil in chamber A 611 and chamber B 612 to cause the pull rod 62 to retract or extend accordingly. At the same time, after the information processing system senses the oil pressure change signal, it transmits a signal to the reverse drive assembly 40, the clutch 50 is opened, and the reverse drive motor 41 is connected to the intermediate shaft 43 for transmission. The reverse drive motor 41 rotates, and the steering shaft 30 rotates correspondingly to the wheel offset, and transmits the road information to the driver in the form of the rotation of the steering wheel 31. After the vehicle travels to a flat and straight section, the information processing system sends a reset signal to the control assembly 70 and the hydraulic pump 64. The control assembly 70 controls the pull rod 60 to return to the corresponding straight-ahead state, and the hydraulic pump 64 controls the pull rod 62 to return to the default state.

[0054] Compared with the prior art, in the present application, the input mechanism 1 and the output mechanism are separately arranged, the steering signal of the input mechanism 1 is converted into an electrical signal to drive the motor to control the operation of the output mechanism, effectively reducing the wear of mechanisms such as gears, and greatly simplifying the structural composition, which is beneficial to simplifying the design of the vehicle body system layout. And it can absorb the reverse impact through the hydraulic pump 64 to protect the driver.

[0055] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention is subject to the claims, and any substitutions, deformations, and improvements that are easily conceivable by those skilled in the art to this technology fall within the protection scope of the present invention.

Claims

1. A gear steering mechanism for new energy vehicles, characterized in that, It includes an input mechanism (1), a first output mechanism (2), and a second output mechanism (3), and the input mechanism (1) is separately arranged from the first output mechanism (2) and the second output mechanism (3). The input mechanism (1) includes a steering shaft (30) and a reverse transmission component (40). The steering shaft (30) is connected to an automotive steering wheel (31), and the reverse transmission component (40) is connected to the steering shaft (30) for transmission. A steering sensor (32) is installed on the steering shaft (30), and the steering sensor (32) is electrically connected to the information processing system of the vehicle. Both the first output mechanism (2) and the second output mechanism (3) include a pull rod (60) and a control component (70). The pull rod (60) is axially movably installed on the control component (70), and the control component (70) is electrically connected to the information processing system of the vehicle. The pull rod (60) includes a hydraulic cylinder shaft (61) and a pull rod (62) sleeved inside the hydraulic cylinder shaft (61). A hydraulic cavity is provided inside the hydraulic cylinder shaft (61). The pull rod (62) extends into the hydraulic cavity and a piston (63) is provided at the end. The piston (63) divides the hydraulic cavity into an A cavity (611) and a B cavity (612). A hydraulic pump (64) is provided on one side of the hydraulic cylinder shaft (61). The A cavity (611) and the B cavity (612) are connected to the hydraulic pump (64) through a hydraulic pipe (65), and the hydraulic pump (64) is electrically connected to the information processing system of the vehicle. The control component (70) includes a control seat (71). An internal thread (711) is provided inside the control seat (71). An external thread (613) is provided on the side surface of the hydraulic cylinder shaft (61). The control seat (71) is assembled with the hydraulic cylinder shaft (61) by means of the cooperation and engagement of the internal thread (711) and the external thread (613). The control component (70) further includes a control motor (72), and the control motor (72) is electrically connected to the information processing system of the vehicle. The control motor (72) is connected with a control gear (73). Gear teeth (712) are provided around the control seat (71), and the control gear (73) meshes with the gear teeth (712) for transmission.

2. The new energy vehicle gear steering mechanism according to claim 1, characterized in that, The reverse transmission component (40) includes a reverse transmission motor (41) and a clutch (50). The motor shaft (42) of the reverse transmission motor (41) is sleeved at one end of the clutch (50). The other end of the clutch (50) is sleeved with a transition shaft (43). A transition gear (44) is installed on the transition shaft (43). The transition gear (44) meshes with a reverse transmission gear (45), and the reverse transmission gear (45) is installed on the steering shaft (30).

3. The new energy vehicle gear steering mechanism according to claim 2, wherein, The clutch (50) includes an assembly base (51), on which a telescopic rod (52) is installed. An assembly ring (53) is assembled at the end of the telescopic rod (52), and a clutch sleeve (54) is assembled within the assembly ring (53). The two ends of the clutch sleeve (54) are respectively a transition end (541) and a motor end (542). The transition shaft (43) is assembled within the transition end (541), and the motor shaft (42) is assembled within the motor end (542).

4. The new energy vehicle gear steering mechanism according to claim 3, characterized in that, A limit protrusion (543) is provided on the inner wall of the transition end (541), and a limit sliding groove (431) that cooperates with the limit protrusion (543) is provided on the transition shaft (43). The limit protrusion (543) is always within the limit sliding groove (431) during the sliding process.

5. The new energy vehicle gear steering mechanism according to claim 4, characterized in that, An end block (544) is provided within the motor end (542), and a limiting post (545) is provided on the end block (544). A limiting sliding groove (421) that cooperates with the limiting post (545) is provided on the motor shaft (42). The limiting post (545) is always within the limiting sliding groove (421) during the sliding process.

6. The new energy vehicle gear steering mechanism according to claim 5, characterized in that, Axially arranged clutch engagement teeth (546) are annularly provided on the side surface of the limiting post (545), and motor engagement teeth (422) that cooperate with the clutch engagement teeth (546) are provided on the motor shaft (42).

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