Actuator, steering wheel and vehicle

Abstract

The application discloses an actuator, a steering wheel and a vehicle, and relates to the technical field of actuators, and comprises a carrier and a power assembly, wherein the carrier is provided with a driving shaft, a power shaft and two connecting rods; the two connecting rods are respectively a first connecting rod and a second connecting rod, the first connecting rod is provided with a connecting piece, a straight line where a radial line of the power shaft is located is a straight line A, and the connecting piece is located on the straight line A; the connecting piece is slidingly arranged on the second connecting rod, a sliding track of the connecting piece on the second connecting rod is a line segment B, the line segment B is coincident with or parallel to an extension line of a radial line of the driving shaft; and an end of the sliding track away from the driving shaft is a brake end, when the connecting piece is located at the brake end, the straight line A and the line segment B are perpendicular to each other; when the application is used, if the state of equipment needs to be maintained, the connecting piece is located at the brake end, so that a self-locking function is achieved, and only the rotation of the power shaft can drive the driving shaft to rotate.

Description

Technical Field

[0001] This invention relates to the field of actuator technology, specifically to an actuator, a steering wheel, and a vehicle. Background Technology

[0002] An actuator is a device that converts control signals into mechanical motion or force. It is widely used in industrial automation, process control, robotics, and automotive fields to drive equipment such as valves, robotic arms, and regulating mechanisms.

[0003] In the related technologies, the actuators do not have a self-locking function at the node position when in use. When affected by external forces, the actuators may reverse due to the external forces, which may cause changes in the state of the equipment or damage to the actuators. For example, the actuator used to control the folding and storage of the steering wheel needs to ensure that the steering wheel is always in use when the steering wheel is in use.

[0004] In view of this, there is an urgent need for an actuator, a steering wheel, and a vehicle. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention solves this problem using the following technical structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An actuator includes: a carrier and a power assembly, wherein the carrier is provided with a drive shaft, a power shaft and two connecting rods, the drive shaft and the power shaft are axially aligned, and the power assembly is used to drive the power shaft to rotate; The two connecting rods are a first connecting rod and a second connecting rod. The first connecting rod is disposed on the power shaft, and the second connecting rod is disposed on the drive shaft. A connector is disposed on the first connecting rod. A straight line containing a radial line of the power shaft is a straight line A, and the connector is located on the straight line A. The connector is slidably disposed on the second link, and the sliding trajectory of the connector on the second link is line segment B, which coincides with the extension of a radial line of the drive shaft. The end of the sliding trajectory away from the drive shaft is the braking end. When the connector is located at the braking end, the straight line A and the line segment B are perpendicular to each other.

[0008] When the connector moves to one end of the sliding trajectory near the drive shaft, the straight line A coincides with the line segment B.

[0009] The second connecting rod is provided with a limiting rail, which extends along the extension direction of the line segment B, and the connecting member is slidably disposed at the limiting rail.

[0010] The second connecting rod has a straight limiting hole that extends along the extension direction of the line segment B, and the connector is engaged in the limiting hole.

[0011] The connector is cylindrical, and the straight line A passes through the axis of the connector.

[0012] The carrier includes a housing and a cover plate disposed on the housing, and the power shaft and the power assembly are disposed inside the housing; The drive shaft passes through the housing.

[0013] The power assembly includes a motor and a reduction gear set, both of which are housed within the housing. The motor is connected to the power shaft via the reduction gear set.

[0014] The power assembly also includes a steering transmission assembly, which includes a first worm, a first worm wheel, a second worm, and a second worm wheel. The first worm is coaxially connected to the output shaft of the motor. The first worm wheel and the second worm wheel are rotatably disposed within the housing. The first worm wheel meshes with the first worm, and the second worm is coaxially connected with the first worm wheel. The second worm wheel meshes with the second worm. The second worm gear is connected to the power shaft via the reduction gear set; The axial direction of the first worm and the axial direction of the second worm are perpendicular to each other, and the second worm wheel is disposed in the direction of the second worm close to the motor.

[0015] A steering wheel includes a steering wheel body, a steering wheel mounting base, and an actuator. The carrier is disposed on the steering wheel mounting base, and the steering wheel body is rotatably disposed on the steering wheel mounting base via a rotating shaft, the rotating shaft being coaxially connected to the drive shaft.

[0016] A vehicle including the aforementioned steering wheel.

[0017] The following beneficial effects can be achieved by using the structure described above in this invention: In use, the device is connected to the drive shaft, and the drive shaft is rotated through the power assembly, which in turn causes the first connecting rod to rotate. This causes the connecting piece to slide on the second connecting rod. Since the sliding trajectory of the connecting piece is a straight line, the second connecting rod moves, causing the power shaft to rotate, thereby controlling the device. To maintain the device's state, the connecting piece is positioned at the brake end when the device needs to be maintained, thus providing a self-locking function. The drive shaft can only be driven to rotate by rotating the power shaft, thus providing a protective function. When the actuator is used on the steering wheel, it drives the steering wheel body to rotate on the steering wheel mounting base, thus retracting and unfolding the steering wheel body. When the steering wheel body needs to maintain self-locking in both retracted and unfolded states, the connecting parts in both states are located at the braking end, thereby achieving self-locking of the steering wheel body and preventing the steering wheel body from rotating in a direction perpendicular to the horizontal when subjected to external forces. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this embodiment; Figure 2 This is a schematic diagram of the internal structure of this embodiment; Figure 3 This is a schematic diagram of the structure of the power shaft, connecting rod, and drive shaft in this embodiment; Figure 4 This is a schematic diagram of the structure of the connector located at the braking end of the sliding track when it rotates clockwise in this embodiment; Figure 5 This is a schematic diagram of the structure of the connector located at the braking end of the sliding track when it rotates counterclockwise in this embodiment.

[0019] In the diagram: 100, carrier; 110, shell; 120, cover plate; 200, drive shaft; 210, assembly hole; 300, power shaft; 400, connecting rod; 500, connector; 600, limiting hole; 700, motor; 800, reduction gear set; 900, steering transmission set; 910, first worm; 920, first worm wheel; 930, second worm; 940, second worm wheel. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this invention are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product or device.

[0022] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0023] Example 1, see attached document Figure 1-3 An actuator is shown, comprising a carrier 100 and a power assembly. The carrier 100 is provided with a drive shaft 200, a power shaft 300 and two connecting rods 400. The drive shaft 200 and the power shaft 300 are aligned axially, and the power assembly is used to drive the power shaft 300 to rotate. When the connector 500 moves to one end of the sliding trajectory near the drive shaft 200, the straight line A coincides with the line segment B. The two connecting rods 400 are the first connecting rod and the second connecting rod, respectively. The first connecting rod is set on the power shaft 300 (the first connecting rod is located on the ring side of the power shaft 300), and the second connecting rod is set on the drive shaft 200 (the second connecting rod is located on the ring side of the drive shaft 200). The first connecting rod is provided with a connector 500 (the connector 500 is set on the ring side of the power shaft 300). The straight line containing one radial line of the power shaft 300 is the straight line A. The connector 500 is located on the straight line A, that is, the straight line A passes through the center of the connector 500 (in this embodiment, the connector 500 is cylindrical, and the straight line A passes through the axis of the connector 500). The connector 500 is slidably mounted on the second link, and the sliding trajectory of the connector 500 on the second link is line segment B, which coincides with the extension of a radial line of the drive shaft 200. The end of the sliding trajectory away from the drive shaft 200 is the braking end (the braking end is the limit position where the connector 500 slides away from the drive shaft 200 on the second link). When the connector 500 is at the braking end, line A and line segment B are perpendicular to each other. When line A and line segment B are perpendicular to each other, when an external force drives the drive shaft 200 to rotate, the direction of the force applied by the second link to the connector 500 is the same as the extension direction of line A (the force applied by the second link to the connector 500 has no component in other directions). Since the sliding trajectory of the connector 500 on the second link is unique and perpendicular to line A, when line A and line segment B are perpendicular to each other, when an external force drives the drive shaft 200 to rotate, the connector 500 will not slide on the second link, preventing the drive shaft 200 from rotating and maintaining the equipment in its holding state. The first link and the second link are in a state where line A and line segment B are perpendicular to each other, which plays a self-locking function, preventing the drive shaft 200 from rotating under external force and maintaining the equipment in its holding state.

[0024] Based on the above structure, in use, the device is connected to the drive shaft 200, and the drive shaft 300 is rotated through the power component, which in turn causes the first connecting rod to rotate, and the connecting piece 400 slides on the second connecting rod. Since the sliding trajectory of the connecting piece 500 is a straight line, the movement of the second connecting rod causes the drive shaft 300 to rotate, thereby achieving control of the device. If it is necessary to maintain the device's state (to prevent the drive shaft 200 from rotating when affected by external forces), the connecting piece 500 is positioned at the braking end (the straight line A and line segment B are perpendicular to each other) when the device needs to maintain its state, thus achieving a self-locking function. The drive shaft 200 can only be driven to rotate by the rotation of the power shaft 300, thus providing a protective function.

[0025] A further optimization is that when the connector 500 moves to one end of the sliding trajectory near the drive shaft 200, straight line A coincides with line segment B. The advantage of this design is that, regardless of whether the drive shaft 300 rotates clockwise to its limit position (e.g., ...), Figure 4 As shown), or when rotated counterclockwise to the limit position (as shown). Figure 5 As shown, the connector 500 can move to the braking end. The connector 500 can achieve self-locking in both positions, thus meeting the self-locking requirements of the equipment in two states.

[0026] In this embodiment, to limit the movement of the connector 500, a limiting track can be provided on the second link, extending along the extension direction of line segment B, and the connector 500 can be slidably disposed at the limiting track; alternatively, as shown in the following example... Figure 2 and Figure 5 As shown, a straight-line limiting hole 600 is provided on the second connecting rod (the braking end is located at the end of the limiting hole 600 away from the drive shaft 200). The limiting hole 600 extends along the extension direction of line segment B. The connector 500 is engaged in the limiting hole 600 (and in this embodiment, it is preferably set that the width of the limiting hole 600 in the direction perpendicular to line segment B is the same as the diameter of the connector 500, so that the connector 500 will not move in the direction perpendicular to line segment B within the limiting hole 600). In this way, the movement of the connector 500 is restricted and guided by the limiting hole 600.

[0027] like Figures 1-5 As shown, the carrier 100 includes a housing 110 and a cover plate 120 disposed on the housing 110. The power shaft 300 and the power assembly are disposed inside the housing 110. The drive shaft 200 passes through the housing 110. The drive shaft 200 is coaxially provided with an assembly hole 210. Both ends of the drive shaft 200 can extend to the outside of the carrier 100, so that during installation, the shaft of the device can be inserted into the assembly hole 210 from either end to realize the assembly of the device and the actuator.

[0028] To drive the drive shaft 300 to rotate, the power assembly can be directly composed of a motor, with the motor coaxially connected to the drive shaft 300, thereby driving the drive shaft 300 to rotate; alternatively, it can be composed of a motor and a chain and sprocket assembly (the chain is connected to the output shaft of the motor and the drive shaft 300 via two sprockets respectively), with the motor driving the chain to rotate, thereby driving the drive shaft 300 to rotate. Other than these, such as... Figures 2-5 As shown, the power assembly can also consist of a motor 700 and a reduction gear set 800. Both the motor 700 and the reduction gear set 800 are housed within the housing 110. The motor 700 is connected to the power shaft 300 via the reduction gear set 800. In this way, the motor 700 provides power, and the reduction gear set 800 reduces the speed of the motor 700 and increases the torque, which can adapt to scenarios with greater torque requirements.

[0029] like Figures 2-5 As shown, to reduce the volume of the carrier 100 and improve the compactness of the internal structure, the power assembly also includes a steering transmission group 900. The steering transmission group 900 includes a first worm 910, a first worm wheel 920, a second worm 930, and a second worm wheel 940. The first worm 910 is coaxially connected to the output shaft of the motor 700. The first worm wheel 920 and the second worm wheel 940 are rotatably disposed within the housing 110. The first worm wheel 920 meshes with the first worm 910. The second worm 930 is coaxially connected with the first worm wheel 920, and the second worm wheel 940 is coaxially connected with the second worm 930. 0 meshing; the second worm 930 is connected to the power shaft 300 via the reduction gear set 800; the axial direction of the first worm 910 and the axial direction of the second worm 930 are perpendicular to each other, and the second worm wheel 940 is set in the direction of the second worm 930 close to the motor 700. In this way, the direction of the rotational force output by the motor 700 is adjusted through the transmission of the two sets of worms and worm wheels, so that the reduction gear set, the power shaft 200 and the drive shaft 300 can be set around the motor 700, reducing the length requirements of the carrier 100 and making the length difference of the carrier 100 in various directions smaller.

[0030] In Embodiment 2, this application also discloses a steering wheel, including a steering wheel body (driver's hand position), a steering wheel mounting base, and an actuator as described in Embodiment 1. The carrier 100 is disposed on the steering wheel mounting base, and the steering wheel body is rotatably disposed on the steering wheel mounting base via a rotating shaft. The rotating shaft is coaxially connected to the drive shaft 200. The advantage of this arrangement is that the actuator drives the steering wheel body to rotate on the steering wheel mounting base, allowing the steering wheel body to be retracted (rotated to the driver's side or in another direction) and unfolded (in the driving state). When the steering wheel body needs to maintain self-locking in both the retracted and unfolded states (when driving, the steering wheel cannot rotate in a direction perpendicular to the horizontal), the connecting member 500 in both states is located at the braking end (the straight line A and line segment B are perpendicular to each other), thus achieving self-locking of the steering wheel body and preventing the steering wheel body from rotating in a direction perpendicular to the horizontal when subjected to external force.

[0031] Example 3: A vehicle including a steering wheel as described in Example 2.

[0032] The above are merely preferred embodiments of this application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that are directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. An actuator, characterized in that, include: The carrier (100) and the power assembly are provided with a drive shaft (200), a power shaft (300) and two connecting rods (400) on the carrier (100). The drive shaft (200) and the power shaft (300) are aligned in the same direction. The power assembly is used to drive the power shaft (300) to rotate. The two connecting rods (400) are a first connecting rod and a second connecting rod, respectively. The first connecting rod is disposed on the power shaft (300), and the second connecting rod is disposed on the drive shaft (200). A connector (500) is disposed on the first connecting rod. A straight line containing a radial line of the power shaft (300) is a straight line A, and the connector (500) is located on the straight line A. The connector (500) is slidably disposed on the second link, and the sliding trajectory of the connector (500) on the second link is line segment B, which coincides with the extension line of a radial line of the drive shaft (200); The end of the sliding trajectory away from the drive shaft (200) is the braking end. When the connector (500) is located at the braking end, the straight line A and the line segment B are perpendicular to each other.

2. An actuator according to claim 1, characterized in that: When the connector (500) moves to one end of the sliding trajectory near the drive shaft (200), the straight line A coincides with the line segment B.

3. An actuator according to claim 1, characterized in that: The second connecting rod is provided with a limiting rail, which extends along the extension direction of the line segment B, and the connecting member (500) is slidably disposed at the limiting rail.

4. An actuator according to claim 1, characterized in that: The second connecting rod has a straight limiting hole (600) that extends along the extension direction of the line segment B, and the connector (500) is engaged in the limiting hole (600).

5. An actuator according to any one of claims 1-4, characterized in that: The connector (500) is cylindrical, and the straight line A passes through the axis of the connector (500).

6. An actuator according to any one of claims 1-4, characterized in that: The carrier (100) includes a housing (110) and a cover plate (120) disposed on the housing (110), and the power shaft (300) and the power assembly are disposed inside the housing (110); The drive shaft (200) passes through the housing (110).

7. An actuator according to claim 6, characterized in that: The power assembly includes a motor (700) and a reduction gear set (800). Both the motor (700) and the reduction gear set (800) are disposed inside the housing (110). The motor (700) is connected to the power shaft (300) through the reduction gear set (800).

8. An actuator according to claim 7, characterized in that: The power assembly also includes a steering transmission assembly (900), which includes a first worm (910), a first worm wheel (920), a second worm (930), and a second worm wheel (940). The first worm (910) is coaxially connected to the output shaft of the motor (700). The first worm wheel (920) and the second worm wheel (940) are rotatably disposed within the housing (110). The first worm wheel (920) meshes with the first worm (910), the second worm (930) is coaxially connected with the first worm wheel (920), and the second worm wheel (940) meshes with the second worm (930). The second worm (930) is connected to the power shaft (300) via the reduction gear set (800); The axial direction of the first worm (910) and the axial direction of the second worm (930) are perpendicular to each other, and the second worm wheel (940) is disposed in the direction of the second worm (930) near the motor (700).

9. A steering wheel, characterized in that: The system includes a steering wheel body, a steering wheel mounting base, and an actuator as described in any one of claims 1-8. The carrier (100) is disposed on the steering wheel mounting base, and the steering wheel body is rotatably disposed on the steering wheel mounting base via a rotating shaft, the rotating shaft being coaxially connected to the drive shaft (200).

10. A vehicle, characterized in that: Including a steering wheel as described in claim 9.

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