Automatic driving steering wheel motor integrated steering control device

Abstract

The invention discloses an automatic driving steering wheel motor integrated steering control device, and relates to the technical field of steering control. The invention comprises a housing and an internal driving part. The driving part drives the hollow rotating shaft to rotate through the stator winding and the rotor to realize automatic steering. An installation cover plate is arranged on the shell, an outer side elastic pressing ring, an inner side elastic pressing ring and a rubber ring are arranged in the shell, navigation starting and stopping and horn control are achieved through contact of a conductive coating, and environment erosion is prevented through the sealing design. The electric cylinder controls the friction state of the friction skin and the control panel, switching between an automatic mode and a manual mode is achieved, and steering resistance is reduced during manual operation. The device is compact in structure, high in transmission efficiency and suitable for farming machinery and other severe environments. The problems that a traditional device is prone to contact damage, inconvenient to switch and low in efficiency are solved, and reliability, safety and operation comfort are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steering control, and specifically to an integrated steering control device for an autonomous driving steering wheel motor. Background Art

[0002] Existing integrated steering control devices for autonomous driving steering wheel motors usually use independent motors to drive the steering column to rotate and achieve function control through mechanical or electronic switches. In traditional designs, the motor is directly fixed to the steering column, and steering is achieved through simple gear or chain drives. The control contacts mostly use exposed buttons or levers. This design can meet the requirements in ordinary passenger cars, but exposes many problems in special scenarios such as agricultural machinery. First, the exposed control contacts are vulnerable to moisture and dust erosion, resulting in poor contact or short circuits, reducing reliability. Second, the traditional device does not fully consider the switching requirements between manual and automatic modes. The motor still needs to overcome a large resistance in the manual mode, making the operation laborious. More seriously, the traditional contact design may cause current leakage, making the outer shell charged and posing a safety hazard. Summary of the Invention

[0003] To overcome the defects of the above-mentioned prior art, the present invention provides the following technical solution: An integrated steering control device for an autonomous driving steering wheel motor, including a housing. A driving part is arranged inside the housing, and the driving part is used to drive the rotation of a hollow rotating shaft rotatably installed at the axial center position of the housing. One end of the hollow rotating shaft is provided with a threaded hole for installing the steering wheel; An installation cover plate that rotates in cooperation with the hollow rotating shaft is also fixedly installed on the housing. Two concentrically arranged outer annular grooves and inner annular grooves are provided on the installation cover plate. An outer rubber ring and an inner rubber ring are respectively fixedly installed in the outer annular groove and the inner annular groove. An outer elastic pressing ring and an inner elastic pressing ring are respectively arranged above the outer rubber ring and the inner rubber ring. The outer elastic pressing ring is in conductive contact with the outer rubber ring, and the inner elastic pressing ring is in conductive contact with the inner rubber ring; Conductive coatings are arranged between the opposite surfaces of the outer elastic pressing ring and the outer rubber ring, and between the opposite surfaces of the inner elastic pressing ring and the inner rubber ring; The outer elastic pressing ring and the inner elastic pressing ring are elastically and sealingly connected to the inner walls of the outer annular groove and the inner annular groove, so that the outer elastic pressing ring and the inner elastic pressing ring are flush with the surface of the installation cover plate.

[0004] Preferably, a plurality of sponge columns are elastically installed between the opposite surfaces of the outer elastic pressing ring and the outer rubber ring, and a plurality of sponge columns are elastically installed between the opposite surfaces of the inner elastic pressing ring and the inner rubber ring; Sinking round holes for fixing the sponge columns are provided on both the outer rubber ring and the inner rubber ring, so that the sponge columns can enter the sinking round holes in the fully compressed state to ensure contact between the outer elastic pressing ring and the outer rubber ring, and contact between the inner elastic pressing ring and the inner rubber ring.

[0005] Preferably, the driving part includes a stator winding fixedly installed on the inner wall of the housing. The stator winding is arranged coaxially with the housing. A rotor is rotatably arranged inside the stator winding. The rotor is rotatably sleeved on the circumferential surface of the hollow rotating shaft.

[0006] Preferably, an annular bracket is fixedly installed on the stator winding and / or the housing. A toothed ring plate is rotatably installed inside the annular bracket through a bearing ring. The toothed ring plate is fixedly sleeved on the circumferential surface of the hollow rotating shaft, so that the toothed ring plate is coaxially matched with the hollow rotating shaft.

[0007] Preferably, a plurality of electric cylinder mounting holes are formed in the radial position of the annular bracket. An electric cylinder is fixedly installed inside each electric cylinder mounting hole. A friction leather is fixedly installed at the end of the telescopic rod of the electric cylinder through a friction leather bracket. A sliding plate frame is fixedly installed at the position of each friction leather bracket inside the annular bracket. The sliding plate frame is slidably matched with the friction leather and the friction leather bracket to prevent the friction leather and the friction leather bracket from rotating along the telescopic rod of the electric cylinder (each friction leather and the friction leather bracket are slidably matched with at least two sliding plate frames).

[0008] Preferably, an inner toothed ring rotatably matched and fixedly connected with the rotor is arranged at the center position of the toothed ring plate. The inner toothed ring is rotatably sleeved on the circumferential surface of the hollow rotating shaft. The inner toothed ring and the toothed ring plate are in meshing transmission cooperation through three gears.

[0009] Preferably, all the gears are rotatably installed on the control disk. The control disk is rotatably matched with both the toothed ring plate and the rotor. The circumferential surface of the control disk is in contact friction cooperation with all the friction leathers.

[0010] Preferably, a support sealing chassis rotatably matched with the rotor is fixedly installed at one end of the stator winding away from the annular bracket. The support sealing chassis is fixedly matched with the inner wall of the housing and rotatably matched with the hollow rotating shaft.

[0011] The present invention has the following beneficial effects compared with the prior art: (1) The present invention realizes the functions of navigation start / stop and horn control respectively through the conductive contact cooperation between the outer elastic pressing ring and the outer rubber ring, and between the inner elastic pressing ring and the inner rubber ring. The conductive coating is arranged at the middle position of the opposite surface to avoid contact with the housing, ensuring that the current only flows between the pressing ring and the rubber ring, and preventing the housing or the vehicle body from being electrified; (2) The outer elastic pressing ring and the inner elastic pressing ring of the present invention are flush with the surface of the mounting cover plate, and form a closed space through elastic sealing connection to block external water vapor and dust from entering the outer annular groove and the inner annular groove; (3) In the manual driving mode of the present invention, when the electric cylinder contracts to separate the friction leather from the control disk, the control disk can rotate freely. At this time, when the steering wheel drives the hollow rotating shaft to rotate, the power is mainly transmitted to the control disk for idle rotation, rather than driving the rotor to rotate against the magnetic force through the inner toothed ring. This design effectively reduces the resistance of the operator to turn the steering wheel and improves the comfort and flexibility of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of the housing of the present invention.

[0013] Figure 2 It is a schematic structural diagram of the mounting cover plate of the present invention.

[0014] Figure 3 It is a schematic structural diagram of the annular groove of the present invention.

[0015] Figure 4 It is a schematic structural diagram of the annular bracket of the present invention.

[0016] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at position A in

[0017] Figure 6 It is a schematic structural diagram of the support sealing chassis of the present invention.

[0018] Figure 7 It is a schematic structural diagram of the rotor of the present invention.

[0019] Figure 8 It is a schematic structural diagram of the control disk of the present invention.

[0020] Figure 9 It is a schematic structural diagram of the toothed ring disk of the present invention.

[0021] In the figure: 101 - outer shell; 102 - mounting cover plate; 103 - hollow rotating shaft; 104 - outer elastic pressing ring; 105 - inner elastic pressing ring; 106 - threaded hole; 107 - sponge column; 108 - outer rubber ring; 109 - inner rubber ring; 110 - outer annular groove; 111 - inner annular groove; 112 - annular bracket; 113 - toothed ring plate; 114 - bearing ring; 115 - electric cylinder; 116 - sliding plate frame; 117 - friction leather; 118 - friction leather bracket; 119 - control panel; 120 - stator winding; 121 - support sealing chassis; 122 - rotor; 123 - gear; 124 - inner toothed ring; 125 - electric cylinder mounting hole. Specific embodiments

[0022] The following combines the attached Figures 1-9 drawings, and further illustrates the technical solution of the present invention through specific embodiments.

[0023] The present invention provides an integrated steering control device for an autonomous driving steering wheel motor, including an outer shell 101. A driving part is arranged inside the outer shell 101. The driving part is used to drive the rotation of a hollow rotating shaft 103 rotatably installed at the axial center position of the outer shell 101. One end of the hollow rotating shaft 103 is provided with a threaded hole 106 for installing a steering wheel; An installation cover plate 102 that rotates in cooperation with the hollow rotating shaft 103 is also fixedly installed on the outer shell 101. Two concentrically arranged outer annular grooves 110 and inner annular grooves 111 are provided on the installation cover plate 102. An outer rubber ring 108 and an inner rubber ring 109 are respectively fixedly installed in the outer annular groove 110 and the inner annular groove 111. An outer elastic pressing ring 104 and an inner elastic pressing ring 105 are respectively arranged above the outer rubber ring 108 and the inner rubber ring 109. The outer elastic pressing ring 104 is in conductive contact with the outer rubber ring 108, and the inner elastic pressing ring 105 is in conductive contact with the inner rubber ring 109; Conductive coatings are provided between the opposite surfaces of the outer elastic pressing ring 104 and the outer rubber ring 108, and between the opposite surfaces of the inner elastic pressing ring 105 and the inner rubber ring 109; The outer elastic pressing ring 104 and the inner elastic pressing ring 105 are elastically and sealingly connected to the inner walls of the outer annular groove 110 and the inner annular groove 111, so that the outer elastic pressing ring 104 and the inner elastic pressing ring 105 are flush with the surface of the installation cover plate 102. A plurality of sponge columns 107 are elastically installed between the opposite surfaces of the outer elastic pressing ring 104 and the outer rubber ring 108, and a plurality of sponge columns 107 are elastically installed between the opposite surfaces of the inner elastic pressing ring 105 and the inner rubber ring 109; Sinking round holes for fixing the sponge columns 107 are provided on both the outer rubber ring 108 and the inner rubber ring 109, so that the sponge columns 107 can enter the sinking round holes in a fully compressed state, ensuring that the outer elastic pressing ring 104 is in contact with the outer rubber ring 108, and the inner elastic pressing ring 105 is in contact with the inner rubber ring 109.

[0024] The driving part includes a stator winding 120 fixedly installed on the inner wall of the housing 101. The stator winding 120 is coaxially arranged with the housing 101. A rotor 122 is rotatably arranged inside the stator winding 120. The rotor 122 is rotatably sleeved on the circumferential surface of the hollow rotating shaft 103. An annular bracket 112 is fixedly installed on the stator winding 120 and / or the housing 101. A toothed ring plate 113 is rotatably installed inside the annular bracket 112 through a bearing ring 114. The toothed ring plate 113 is fixedly sleeved on the circumferential surface of the hollow rotating shaft 103, so that the toothed ring plate 113 is coaxially matched with the hollow rotating shaft 103. A plurality of electric cylinder mounting holes 125 are formed in the radial position of the annular bracket 112. An electric cylinder 115 is fixedly installed inside each electric cylinder mounting hole 125. The end of the telescopic rod of the electric cylinder 115 is fixedly installed with a friction leather 117 through a friction leather bracket 118. A sliding plate frame 116 is fixedly installed at the position of each friction leather bracket 118 inside the annular bracket 112. The sliding plate frame 116 is slidably matched with the friction leather 117 and the friction leather bracket 118 to prevent the friction leather 117 and the friction leather bracket 118 from rotating along the telescopic rod of the electric cylinder 115 (each friction leather 117 and friction leather bracket 118 is slidably matched with at least two sliding plate frames 116). An inner toothed ring 124 coaxially and fixedly matched with the rotor 122 is rotatably arranged at the center position of the toothed ring plate 113. The inner toothed ring 124 is rotatably sleeved on the circumferential surface of the hollow rotating shaft 103. The inner toothed ring 124 and the toothed ring plate 113 are meshed and driven by three gears 123. All the gears 123 are rotatably installed on a control disk 119. The control disk 119 is rotatably matched with both the toothed ring plate 113 and the rotor 122. The circumferential surface of the control disk 119 is in contact friction with all the friction leathers 117. One end of the stator winding 120 away from the annular bracket 112 is fixedly installed with a support and seal chassis 121 rotatably matched with the rotor 122. The support and seal chassis 121 is fixedly matched with the inner wall of the housing 101 and rotatably matched with the hollow rotating shaft 103.

[0025] The working principle of an integrated steering control device for an autonomous driving steering wheel motor disclosed in the present invention is as follows: The housing 101 is installed at the position between the steering wheel and the steering column, and the housing 101 is fixed to the vehicle frame, so that one end of the steering column is fixed to one end of the hollow rotating shaft 103, and the other end of the hollow rotating shaft 103 is fixed to the steering wheel. The elastic paddles provided on the steering wheel correspond to the positions of the outer elastic pressing ring 104 and the inner elastic pressing ring 105 (the trajectory of the elastic paddles following the rotation of the steering wheel is the outer elastic pressing ring 104 and the inner elastic pressing ring 105). When the elastic paddle corresponding to the outer elastic pressing ring 104 presses the outer elastic pressing ring 104, the outer elastic pressing ring 104 will deform, and then the outer elastic pressing ring 104 and the outer rubber ring 108 will come into contact and conduct electricity, which is used as the start-stop contact for navigation; similarly, when the elastic paddle corresponding to the inner elastic pressing ring 105 is pressed, the corresponding inner elastic pressing ring 105 will deform, and the inner elastic pressing ring 105 and the inner rubber ring 109 will come into contact and conduct electricity, which is used as the control contact for the horn. And because the outer elastic pressing ring 104 and the inner elastic pressing ring 105 seal the inside of the outer annular groove 110 and the inner annular groove 111, at this time, the outer elastic pressing ring 104 and the inner elastic pressing ring 105 can block the external environment (used for agricultural machinery, so it is inevitable that water will drop onto the housing 101), preventing the contact conductive coatings between the outer elastic pressing ring 104 and the outer rubber ring 108, and between the inner elastic pressing ring 105 and the inner rubber ring 109 from being corroded (when the conductive coatings are set, they cannot contact the inner walls of the outer annular groove 110 and the inner annular groove 111, that is, the conductive coatings are set in the middle positions of the outer elastic pressing ring 104, the inner elastic pressing ring 105, the outer rubber ring 108, and the inner rubber ring 109). At the same time, since the circuit only exists between the outer elastic pressing ring 104 and the outer rubber ring 108, and between the inner elastic pressing ring 105 and the inner rubber ring 109, the housing 101 and the vehicle body will not be electrified, making the operation safer.

[0026] The stator winding 120 and the rotor 122 are used to drive the hollow rotating shaft 103 to rotate, and then drive the steering column to rotate, so as to achieve automatic steering. During normal operation, the telescopic rods of all the electric cylinders 115 are in the extended state. The telescopic rods of the electric cylinders 115 will always keep in contact with the circumferential surface of the control disk 119 by pressing the friction leather 117 through the friction leather bracket 118, so that there is friction between the friction leather 117 and the control disk 119, thereby preventing the control disk 119 from rotating and making the control disk 119 in a fixed state. When the stator winding 120 drives the rotor 122 to rotate, the rotor 122 will drive the inner toothed ring 124 to rotate. The rotation of the inner toothed ring 124 will drive the gear 123 that cannot revolve to rotate. The rotation of the gear 123 will drive the toothed ring disk 113 to rotate, and the toothed ring disk 113 will drive the hollow rotating shaft 103 to rotate, thereby driving the steering column to rotate.

[0027] When the operator is driving, the stator winding 120 does not need to work. At this time, control all the telescopic rods of the electric cylinders 115 to contract, so that the friction leather 117 is separated from the control disk 119. At this time, the rotation of the control disk 119 will not be restricted. Therefore, when the steering wheel is rotated manually at this time, it will drive the hollow rotating shaft 103 to rotate. The rotation of the hollow rotating shaft 103 will directly drive the steering column to rotate. However, when the hollow rotating shaft 103 rotates, it will also drive the toothed ring disk 113 to rotate. At this time, the rotation of the toothed ring disk 113 will drive the gear 123 to revolve and rotate on its own. This is because the control disk 119 can rotate. Therefore, the revolution of the gear 123 will not be restricted. Therefore, most of the power will be transmitted to the control disk 119, so that the control disk 119 rotates idly, rather than being transmitted to the inner toothed ring 124 to drive the rotor 122 to rotate against the magnetic force. At this time, the resistance of the operator to turn the steering wheel can be reduced.

Claims

1. An integrated steering control device for an autonomous driving steering wheel motor, characterized in that: It includes a housing (101). Inside the housing (101), a driving part is provided. The driving part is used to drive the rotation of a hollow rotating shaft (103) rotatably installed at the axial center position of the housing (101). One end of the hollow rotating shaft (103) is provided with a threaded hole (106) for installing a steering wheel. An installation cover plate (102) rotatably matched with the hollow rotating shaft (103) is also fixedly installed on the housing (101). Two concentrically arranged outer annular grooves (110) and inner annular grooves (111) are provided on the installation cover plate (102). An outer rubber ring (108) and an inner rubber ring (109) are respectively fixedly installed in the outer annular groove (110) and the inner annular groove (111). An outer elastic pressing ring (104) and an inner elastic pressing ring (105) are respectively arranged above the outer rubber ring (108) and the inner rubber ring (109). The outer elastic pressing ring (104) is in conductive contact cooperation with the outer rubber ring (108), and the inner elastic pressing ring (105) is in conductive contact cooperation with the inner rubber ring (109). Conductive coatings are provided between the opposite surfaces of the outer elastic pressing ring (104) and the outer rubber ring (108), and conductive coatings are provided between the opposite surfaces of the inner elastic pressing ring (105) and the inner rubber ring (109). The outer elastic pressing ring (104) and the inner elastic pressing ring (105) are elastically and sealingly connected to the inner walls of the outer annular groove (110) and the inner annular groove (111), so that the outer elastic pressing ring (104) and the inner elastic pressing ring (105) are flush with the surface of the installation cover plate (102).

2. The integrated steering control device for an autonomous driving steering wheel motor according to claim 1, wherein: A plurality of sponge columns (107) are elastically installed between the opposite surfaces of the outer elastic pressing ring (104) and the outer rubber ring (108), and a plurality of sponge columns (107) are elastically installed between the opposite surfaces of the inner elastic pressing ring (105) and the inner rubber ring (109). Sinking round holes for fixing the sponge columns (107) are provided on both the outer rubber ring (108) and the inner rubber ring (109), so that the sponge columns (107) can enter the sinking round holes in a fully compressed state.

3. An integrated steering control device for an autonomous driving steering wheel motor according to claim 2, characterized in that: The driving part includes a stator winding (120) fixedly installed on the inner wall of the housing (101). The stator winding (120) is coaxially arranged with the housing (101). A rotor (122) is rotatably arranged inside the stator winding (120). The rotor (122) is rotatably sleeved on the circumferential surface of the hollow rotating shaft (103).

4. The integrated steering control device for an autonomous driving steering wheel motor according to claim 3, characterized in that: A ring-shaped bracket (112) is fixedly installed on the stator winding (120) and / or the housing (101). A toothed ring plate (113) is rotatably installed inside the ring-shaped bracket (112) through a bearing ring (114). The toothed ring plate (113) is fixedly sleeved on the circumferential surface of the hollow rotating shaft (103), so that the toothed ring plate (113) is coaxially matched with the hollow rotating shaft (103).

5. The integrated steering control device for an autonomous driving steering wheel motor according to claim 4, characterized in that: A plurality of electric cylinder mounting holes (125) are provided at the radial position of the annular bracket (112). An electric cylinder (115) is fixedly installed inside each electric cylinder mounting hole (125). The end of the telescopic rod of the electric cylinder (115) is fixedly installed with a friction leather (117) through a friction leather bracket (118). A sliding plate frame (116) is fixedly installed at the position of each friction leather bracket (118) on the inner side of the annular bracket (112). The sliding plate frame (116) is in sliding fit with the friction leather (117) and the friction leather bracket (118) to prevent the friction leather (117) and the friction leather bracket (118) from rotating along the telescopic rod of the electric cylinder (115).

6. The integrated steering control device for an autonomous driving steering wheel motor according to claim 5, wherein: An inner ring gear (124) coaxially and fixedly fitted with the rotor (122) is rotatably arranged at the center position of the ring gear disc (113). The inner ring gear (124) is rotatably sleeved on the circumferential surface of the hollow rotating shaft (103). The inner ring gear (124) and the ring gear disc (113) are in meshing transmission fit through three gears (123).

7. The integrated steering control device for an autonomous driving steering wheel motor according to claim 6, characterized in that: All the gears (123) are rotatably installed on the control disc (119). The control disc (119) is rotatably fitted with both the ring gear disc (113) and the rotor (122). The circumferential surface of the control disc (119) is in contact friction fit with all the friction leathers (117).

8. The integrated steering control device for an autonomous driving steering wheel motor according to claim 7, wherein: One end of the stator winding (120) far from the annular bracket (112) is fixedly installed with a support and seal chassis (121) rotatably fitted with the rotor (122). The support and seal chassis (121) is fixedly fitted with the inner wall of the housing (101). The support and seal chassis (121) is rotatably fitted with the hollow rotating shaft (103).

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