Linear driving device and automobile

Abstract

The utility model belongs to the technical field of automobile steering wheels, and particularly relates to a linear driving device and an automobile. The linear driving device comprises a driving assembly and a transmission assembly, the transmission assembly comprises a driving wheel, a driven wheel, an annular transmission piece and a mounting piece arranged in a sliding mode in the preset direction, the driving wheel and the driven wheel are arranged in the preset direction in a spaced mode and rotationally arranged, and the mounting piece is located between the driving wheel and the driven wheel; two ends of the transmission part are respectively connected with the driving wheel and the driven wheel; the mounting part is connected with one side of the transmission part; wherein the two transmission assemblies are arranged at intervals, the driving assembly drives the two driving wheels to rotate synchronously, and the two transmission parts drive the two mounting parts to slide synchronously and oppositely. Compared with a single mounting piece, the output speed is doubled, the structure is simple, and the occupied space is small.

Description

Technical Field

[0001] This utility model belongs to the field of automotive steering wheel technology, and particularly relates to a linear drive device and an automobile. Background Technology

[0002] Currently, the extension and retraction function of car steering wheels uses an electric motor as a power source. By increasing the torque through a reduction device, the rotational motion of the motor is converted into linear motion, driving the steering wheel to extend and retract linearly. This allows for electric adjustment of the steering wheel position, providing a more comfortable experience for the driver.

[0003] However, the steering wheel linear drive devices widely used in the market today are generally controlled by a single motor to control a single linear reducer. The output screw is connected to the reducer, and the output screw and the output shaft of the motor are arranged perpendicular to each other. This structure not only occupies a lot of space and is complex, but also the output efficiency of adjusting speed is low because a single motor can only control a single linear reducer. Utility Model Content

[0004] The purpose of this application is to provide a linear drive device that addresses the problem of simplifying the structure of the linear drive device and improving the output efficiency of speed regulation.

[0005] To achieve the above objectives, the technical solution adopted in this application is:

[0006] In a first aspect, a linear drive device is provided, comprising:

[0007] Driver components, and

[0008] A transmission assembly includes a driving wheel, a driven wheel, a ring-shaped transmission component, and a mounting component that slides along a predetermined direction. The driving wheel and the driven wheel are arranged at intervals along the predetermined direction and are both rotatably disposed. The mounting component is located between the driving wheel and the driven wheel. The two ends of the transmission component are respectively connected to the driving wheel and the driven wheel, and the mounting component is connected to one side of the transmission component.

[0009] The transmission components are arranged in two spaced intervals, the drive component drives the two drive wheels to rotate synchronously, and the two transmission components drive the two mounting components to slide synchronously and in opposite directions.

[0010] In some embodiments, the transmission component is a synchronous belt, and the driving pulley and the driven pulley are both synchronous pulleys, respectively fitted inside both ends of the synchronous belt; or the transmission component is a transmission chain, and the driving pulley and the driven pulley are both sprockets, respectively meshing with both ends of the transmission chain.

[0011] In some embodiments, the transmission member is formed by bending a transmission rope, one end of which is wound around the drive wheel, and the other end of which extends toward the driven wheel and bends around the driven wheel to connect to the mounting member, and is also wound around the drive wheel.

[0012] In some embodiments, the transmission rope includes a first rope segment and a second rope segment located between the driving wheel and the driven wheel, the mounting member is connected to the first rope segment, and the mounting member has a clearance groove for the second rope segment to pass through.

[0013] In some embodiments, a wire-fixing groove for fixing the transmission rope is provided on the circumferential side of the drive wheel, and the wire-fixing groove extends circumferentially along the drive wheel and extends in a spiral shape for multiple turns.

[0014] In some embodiments, the transmission assembly further includes a guide rail arranged along a predetermined direction and a slider slidably disposed on the guide rail, the mounting member connecting the slider.

[0015] In some embodiments, the two driving wheels are coaxially arranged and located between the two driven wheels.

[0016] In some embodiments, the drive assembly includes a driver, a rotating shaft, a worm gear disposed on the rotating shaft, and a worm connected to the driver and engaging with the worm gear in a transmission manner, wherein two driving wheels are respectively connected to the two ends of the rotating shaft.

[0017] In some embodiments, the drive assembly further includes a planetary gearbox, with the worm gear and the drive unit respectively connected to its two ends.

[0018] In a second aspect, an automobile is provided, which includes the linear drive unit, and the automobile also includes a steering wheel device, the linear drive unit being connected to the steering wheel device.

[0019] The beneficial effects of this application are as follows: By setting two spaced-apart transmission components, when the drive component drives the two driving wheels to rotate synchronously, the two mounting parts connected to the steering wheel device can slide linearly synchronously, thereby enabling telescopic adjustment of the steering wheel device. Furthermore, by setting two mounting parts, the output speed can be adjusted on both parts, doubling the output speed compared to a single mounting part. Moreover, the transmission components only include driving wheels, driven wheels, and transmission components, resulting in a simple structure, small footprint, and suitability for compact telescopic adjustment applications. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the linear drive device provided in the embodiments of this application;

[0022] Figure 2 yes Figure 1 An exploded schematic diagram of a linear drive device;

[0023] Figure 3 yes Figure 2 A three-dimensional structural diagram of the drive wheel.

[0024] The following are the labeling elements in the figure:

[0025] 100. Linear drive unit; 20. Transmission assembly; 30. Drive assembly; 21. Driving wheel; 22. Transmission rope; 23. Mounting component; 24. Driven wheel; 25. Slider; 26. Guide rail; 27. Positioning seat; 101. Support base plate; 31. Driver; 32. Planetary gearbox; 33. Fixed seat; 34. Rotating shaft; 35. Worm gear; 36. Worm; 211. Wire groove; 212. Fixing groove; 231. Clearance hole; 232. Wire hole; Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are for ease of description only, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0028] Please see Figures 1 to 3 This application provides a linear drive device 100 that can be connected to a car's steering wheel device to drive the steering wheel device to extend and retract.

[0029] Please see Figures 1 to 3 The linear drive device 100 includes a drive assembly 30 and a transmission assembly 20 connected to the drive assembly 30. The transmission assembly 20 includes a driving wheel 21, a driven wheel 24, a ring-shaped transmission member, and a mounting member 23 slidably disposed in a predetermined direction. The predetermined direction can be vertical, horizontal, or at any angle to the horizontal. For ease of description, in this embodiment, the predetermined direction is horizontal. The mounting member 23 is connected to the steering wheel device and, under the drive of an external force, can linearly reciprocate in the horizontal direction, thereby driving the steering wheel device to extend and retract.

[0030] Please see Figures 1 to 3 The driving wheel 21 and driven wheel 24 are arranged at intervals along a predetermined direction and are both rotatably mounted. The mounting member 23 is located between the driving wheel 21 and driven wheel 24, meaning the mounting member 23 can reciprocate between them. The two ends of the transmission member are connected to the driving wheel 21 and driven wheel 24 respectively. The driven wheel 24 tensions the transmission member in a direction away from the driving wheel 21. The mounting member 23 connects to the transmission member. It can be understood that an external force drives the driving wheel 21 to rotate, which in turn drives the driven wheel 24 to rotate via the transmission member, causing the mounting member 23 connected to the transmission member to slide linearly along a predetermined direction. It can be understood that the mounting member 23 reciprocates between the driving wheel 21 and driven wheel 24.

[0031] Two transmission components 20 are arranged at intervals. The drive component 30 drives the two drive wheels 21 to rotate synchronously. The two transmission components drive the two mounting parts 23 to slide synchronously and towards each other. That is, the drive component 30 provides rotational power to the two drive wheels 21, and the two drive wheels 21 rotate synchronously, thereby causing the two mounting parts 23 to slide synchronously.

[0032] Please see Figures 1 to 3 The linear drive device 100 provided in this application embodiment, by setting two spaced-apart transmission components 20, allows the two mounting members 23 connected to the steering wheel device to slide linearly synchronously when the drive component 30 drives the two drive wheels 21 to rotate synchronously. This enables the extension and retraction adjustment of the steering wheel device. By setting two mounting members 23, the output speed can be adjusted on both mounting members 23, doubling the output speed compared to a single mounting member 23. Furthermore, the transmission component 20 only includes the drive wheel 21, the driven wheel 24, and the transmission component, resulting in a simple structure, small footprint, and suitability for compact extension and retraction adjustments.

[0033] In some embodiments, the transmission component is a synchronous belt, and the driving pulley 21 and the driven pulley 24 are both synchronous pulleys, which are respectively fitted inside the two ends of the synchronous belt.

[0034] Optionally, the cooperation between the timing belt and the timing pulley can ensure the stable sliding of the mounting part 23 and avoid slippage; and the timing pulley and timing belt have the characteristics of simple structure and small space occupation.

[0035] In some embodiments, the transmission component is a transmission chain, and the driving wheel 21 and the driven wheel 24 are both sprockets, respectively meshing with the two ends of the transmission chain.

[0036] Optionally, the cooperation between the drive chain and the sprocket can ensure the stable sliding of the mounting part 23 and avoid slippage; and the drive chain and sprocket have the characteristics of simple structure and small space occupation; the cooperation between the drive chain and the sprocket also improves the load capacity and durability of the system.

[0037] Please see Figure 2 In some embodiments, the transmission element is formed by bending a transmission rope 22, one end of which is wound around a rotating wheel, and the other end of which extends toward the driven wheel 24 and bends around the driven wheel 24 to connect to the mounting member 23, and is also wound around the driving wheel 21.

[0038] Optionally, the transmission rope 22 can be a steel wire rope. Steel wire ropes are characterized by high strength and high toughness, capable of withstanding greater tensile and compressive forces, and are not easily broken. Steel wire ropes have a long service life and are not easily worn; they also generate less noise during use, providing a more comfortable experience.

[0039] Please see Figure 2Understandably, both ends of the drive rope 22 are wound around the drive wheel 21, and the unwound portion is wrapped around the driven wheel 24 and connected to the mounting component 23. The driven wheel 24 tensions the drive rope 22 in a direction away from the drive wheel 21. During the rotation of the drive wheel 21, the drive wheel 21 releases one end of the drive rope 22 and simultaneously retracts the other end, causing the mounting component 23 to slide linearly. When the drive wheel 21 changes its rotation direction, the drive wheel 21 releases the other end of the drive rope 22 and simultaneously retracts the other end, causing the mounting component 23 to slide linearly in the opposite direction. Ultimately, this reciprocating linear sliding of the mounting component 23 allows for the extension and retraction adjustment of the steering wheel device.

[0040] Please see Figure 2 In some embodiments, the transmission rope 22 includes a first rope segment and a second rope segment located between the driving pulley 21 and the driven pulley 24. A mounting member 23 connects to the first rope segment and has a clearance groove for the second rope segment to pass through. It is understood that during the rotation of the driving pulley 21, the driving pulley 21 releases line from the first rope segment and simultaneously releases line from the second rope segment, or vice versa. The clearance groove design effectively avoids mutual interference between the first and second rope segments, enabling the transmission system to operate smoothly.

[0041] Optionally, the first rope segment is located above the second rope segment. The mounting component 23 has multiple wire-passing holes, and the first rope segment passes back and forth through each wire-passing hole, thereby achieving a stable connection between the first rope segment and the mounting component 23. Of course, a clamp can also be used to connect the mounting component 23 and the first rope segment, or the wire rope can be welded to the metal mounting component 23 through a welding process.

[0042] Please see Figures 2 to 3 In some embodiments, the peripheral side of the drive wheel 21 is provided with a wire fixing groove 211 for fixing the drive rope 22. The wire fixing groove 211 extends along the circumference of the drive wheel 21 and extends in a threaded manner for multiple turns.

[0043] Optionally, the two ends of the transmission rope 22 are wound around the two ends of the fixed groove 211 respectively, and are wound along the extension path of the fixed groove 211 respectively, so that the drive wheel 21 can release one end of the transmission rope 22 and simultaneously take in the other end.

[0044] Please see Figures 2 to 3Optionally, the two sides of the drive wheel 21 are provided with fixing grooves 212. The two fixing grooves 212 are respectively connected to the two ends of the wire groove 211. Fixing members can be set at both ends of the transmission rope 22. The fixing members are received and fixed in the fixing grooves 212, thereby preventing the transmission rope 22 from completely detaching from the drive wheel 21. The fixing members can be metal balls welded to the wire rope.

[0045] Please see Figures 1 to 2 In some embodiments, the transmission assembly 20 further includes a guide rail 26 arranged in a predetermined direction and a slider 25 slidably disposed on the guide rail 26, with the mounting member 23 connecting the slider 25.

[0046] Optionally, the cooperation between the guide rail 26 and the slider 25 can effectively guide the mounting part 23 to slide in a predetermined direction, thereby improving the accuracy and stability of linear motion.

[0047] Please see Figures 1 to 2 In some embodiments, the two drive wheels 21 are coaxially arranged and located between the two driven wheels 24, thereby enabling the two mounting members 23 to provide bidirectional linear drive to the steering wheel assembly.

[0048] Optionally, the two coaxially arranged drive wheels 21 can rotate synchronously under the drive of the drive assembly 30. The coaxial arrangement of the drive wheels 21 not only ensures the balance during the transmission process and avoids the problem of unbalanced load or imbalance caused by the asymmetry of the two drive wheels 21, but also effectively saves space and facilitates a more compact layout.

[0049] Please see Figure 2 In some embodiments, the drive assembly 30 includes a driver 31, a rotating shaft 34, a worm gear 35 disposed on the rotating shaft 34, and a worm 36 connected to the driver 31 and engaging with the worm gear 35. Two driving wheels 21 are connected to both ends of the rotating shaft 34, and the worm gear 35 is located between the two driving wheels 21. The worm 36 has helical teeth, and through the engagement of the worm gear 35 and the worm 36, the rotational power of the driver 31 can be transmitted to the rotating shaft 34. The axial direction of the worm 36 is perpendicular to the axial direction of the rotating shaft 34.

[0050] Optionally, the sliding direction of the output shaft of the driver 31 or the axial parallel mounting 23 of the worm 36 can be adjusted to make the linear drive 100 more compact and reduce its space requirements.

[0051] Optionally, the driver 31 may be a motor, but is not limited to a motor, which can be powered by connecting to the connection port via a terminal wire.

[0052] Optionally, the drive assembly 30 also includes a fixed base 33 for supporting the rotating shaft 34, the rotating shaft 34 being rotatably connected to the fixed base 33, and the worm gear 35 being located within the fixed base 33.

[0053] Optionally, the transmission assembly 20 also includes a positioning seat 27, with the driven wheel 24 rotatably connected to the positioning seat 27.

[0054] Optionally, the linear drive device 100 also includes a support base plate 101, on which the drive assembly 30 and each transmission assembly 20 are disposed.

[0055] Please see Figures 1 to 2 In some embodiments, the drive assembly 30 further includes a planetary gearbox 32, with the worm gear 36 and the driver 31 connected to its two ends, respectively.

[0056] Optionally, the planetary gearbox 32 can achieve different transmission ratios through the meshing and relative motion of its internal gears, thereby changing the output speed and torque. It can be a parallel gear drive or other transmission methods to achieve speed reduction and power increase; there are no restrictions here, and the choice can be made according to the actual situation.

[0057] Please see Figures 1 to 2 As a speed reducer, the planetary gearbox 32 can reduce the input speed while increasing the torque, achieving an ideal transmission effect and improving the system's reliability and power output. Furthermore, the planetary gearbox 32 has a compact structure, enabling the transmission of a large amount of power within a small space.

[0058] Through the compact planetary transmission assembly and the helical output of the worm gear 36, the two drive wheels 21 can be driven to slide the wire rope traction mounting parts 23 on both sides, realizing bidirectional linear drive of the steering wheel device; realizing linear adjustment of the car steering column, and occupying little space, it can realize the conversion of single rotation output into bidirectional linear drive; and the linear bidirectional motion doubles the output speed of the extension and retraction adjustment of the steering wheel device.

[0059] Please see Figures 1 to 2 Optionally, the working principle of the linear drive device 100 can be briefly described in conjunction with the above structural features:

[0060] When the drive unit 31 is running, power is transmitted to the worm gear 36 via the planetary gearbox 32. The worm gear 36 drives the worm wheel 35 to rotate, thereby causing the two drive wheels 21 to rotate synchronously. The two drive wheels 21 drive the wire rope to rotate, and the rotation of the wire rope in turn drives the mounting part 23 to slide, so that the steering wheel device adapted to the mounting part 23 reciprocates, realizing double-stroke extension and retraction.

[0061] This utility model also proposes an automobile, which includes a linear drive device 100. The specific structure of the linear drive device 100 is as described in the above embodiments. Since this automobile adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0062] Optionally, the vehicle also includes a steering wheel assembly, with the linear drive unit 100 connected to the steering wheel assembly. By connecting the linear drive unit 100 to the steering wheel assembly, precise and smooth telescopic adjustment can be provided to the steering wheel assembly, enhancing the driving experience.

[0063] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A linear drive device, characterized in that, include: Driver components, and A transmission assembly includes a driving wheel, a driven wheel, a ring-shaped transmission component, and a mounting component that slides along a predetermined direction. The driving wheel and the driven wheel are arranged at intervals along the predetermined direction and are both rotatably disposed. The mounting component is located between the driving wheel and the driven wheel. The two ends of the transmission component are respectively connected to the driving wheel and the driven wheel, and the mounting component is connected to one side of the transmission component. The transmission components are arranged in two spaced intervals, the drive component drives the two drive wheels to rotate synchronously, and the two transmission components drive the two mounting components to slide synchronously and in opposite directions.

2. The linear drive device as described in claim 1, characterized in that: The transmission component is a synchronous belt, and the driving pulley and the driven pulley are both synchronous pulleys, respectively fitted inside the two ends of the synchronous belt; or the transmission component is a transmission chain, and the driving pulley and the driven pulley are both sprockets, respectively meshing with the two ends of the transmission chain.

3. The linear drive device as described in claim 1, characterized in that: The transmission component is formed by bending a transmission rope. One end of the transmission rope is wrapped around the driving wheel, and the other end of the transmission rope extends toward the driven wheel and bends around the driven wheel to connect to the mounting component, and is also wrapped around the driving wheel.

4. The linear drive device as described in claim 3, characterized in that: The transmission rope includes a first rope segment and a second rope segment located between the driving wheel and the driven wheel. The mounting member is connected to the first rope segment, and the mounting member has a clearance groove for the second rope segment to pass through.

5. The linear drive device as described in claim 3, characterized in that: The drive wheel has a groove for fixing the transmission rope on its circumferential side. The groove extends along the circumference of the drive wheel and extends in a spiral shape for multiple turns.

6. The linear drive device according to any one of claims 1-5, characterized in that: The transmission assembly further includes a guide rail arranged along a predetermined direction and a slider slidably disposed on the guide rail, and the mounting component connects to the slider.

7. The linear drive device according to any one of claims 1-5, characterized in that: The two driving wheels are coaxially arranged and located between the two driven wheels.

8. The linear drive device as described in claim 7, characterized in that: The drive assembly includes a driver, a rotating shaft, a worm gear disposed on the rotating shaft, and a worm connected to the driver and engaging with the worm gear in a transmission manner. The two ends of the rotating shaft are respectively connected to the two drive wheels.

9. The linear drive device as described in claim 8, characterized in that: The drive assembly also includes a planetary gearbox, with the worm gear and the drive unit connected to its two ends respectively.

10. A car, characterized in that, The vehicle includes a linear drive unit as described in any one of claims 1-9, and further includes a steering wheel unit connected to the linear drive unit.

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