Wheel steering mechanism and vehicle

Abstract

The present invention provides a wheel steering mechanism and a vehicle. The wheel steering mechanism includes a wheel bracket, a wheel and a steering drive assembly. The wheel is swingably mounted on the wheel bracket, and the steering drive assembly is fixedly arranged. The steering drive assembly includes a main body, a fork member, a linear drive member, a follower and a driving connecting rod. By applying the technical solution of the present invention, when the linear drive member is working, the output end of the linear drive member drives the first end of the fork member to move around the hinge point, and the second end of the fork member drives the follower to move, so that the follower drives the two wheels to swing at the same time through the two driving connecting rods respectively, thereby realizing the steering of the wheels. Compared with the prior art, the technical solution of the present invention is simpler in composition of the steering drive assembly, and through the driving method of the fork member, the torque can be further amplified, making it easier to drive the wheels to swing.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle driving equipment, and in particular to a wheel steering mechanism and a vehicle. Background Art

[0002] In many electrically driven vehicles, the steering of the vehicle relies on an electric drive mechanism to deflect the wheels, thereby driving the vehicle to steer. Existing wheel steering mechanisms are large in size and have a complex implementation method, which is not suitable for the steering needs of miniaturized vehicles. Summary of the invention

[0003] The main purpose of the present invention is to provide a wheel steering mechanism and a vehicle, so as to solve the problem that the wheel steering mechanism in the prior art is large and complicated and is not suitable for miniaturized vehicles.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a wheel steering mechanism is provided, comprising: a wheel bracket; a wheel, which is swingably mounted on the wheel bracket; a steering drive assembly, which is fixedly arranged, and the steering drive assembly comprises: a main body, which is fixedly mounted; a fork member, which is rotatably hinged to the main body, and the hinge point is located between the two ends of the fork member; a linear drive member, which is mounted on the main body, and the output end of the linear drive member is drivingly connected to the first end of the fork member; a follower, which is slidably mounted on the main body, and the follower is connected to the second end of the fork member; two driving links, which are respectively connected to the two sides of the follower and between the two wheels, and the driving links are used to drive the wheel to swing.

[0005] In one embodiment, the distance from the first end of the fork member to the hinge point is greater than the distance from the second end of the fork member to the hinge point.

[0006] In one embodiment, the steering drive assembly includes a first linear guide rail and a first slider, the first linear guide rail is mounted on the main body, and the follower is slidably mounted on the first linear guide rail through the first slider.

[0007] In one embodiment, the linear drive member is a movable cylinder member, an electric cylinder member, or a linear motor member.

[0008] In one embodiment, the linear drive member includes: a motor; a screw nut device, the motor is connected to the screw end of the screw nut device, and the nut end of the screw nut device is drivingly connected to the first end of the fork member.

[0009] In one embodiment, the linear drive comprises a gear set mounted between the motor and the leadscrew end of the leadscrew-nut arrangement.

[0010] In one embodiment, the linear drive member further includes a second linear guide rail and a second slider mounted on the second linear guide rail, the second slider is connected to the nut end of the screw nut device, and the first end of the fork member is drivingly connected to the second slider.

[0011] In one embodiment, the wheel bracket is mounted on the main body by suspension.

[0012] In one embodiment, the wheel steering mechanism further includes a position detector, which is used to detect the moving position of the fork member or the moving position of the follower member.

[0013] In order to achieve the above object, according to one aspect of the present invention, a vehicle is provided, comprising a wheel steering mechanism, wherein the wheel steering mechanism is the wheel steering mechanism mentioned above.

[0014] By applying the technical solution of the present invention, the linear drive member works, and the output end of the linear drive member drives the first end of the fork member to move around the hinge point, and the second end of the fork member drives the follower member to move, so that the follower member drives the two wheels to swing at the same time through the two driving connecting rods, thereby realizing the steering of the wheels. Compared with the prior art, the technical solution of the present invention has a simpler composition of the steering drive assembly, and through the driving method of the fork member, the torque can be further amplified, which is more convenient to drive the wheels to swing, so that the technical solution of the present invention is more suitable for miniaturized vehicles.

[0015] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 A front structural schematic diagram of an embodiment of a wheel steering mechanism according to the present invention is shown;

[0018] Figure 2 Shows Figure 1 Schematic diagram of the top view of the wheel steering mechanism. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] Figure 1 and Figure 2 The embodiment of the wheel steering mechanism of the present invention is shown, and the wheel steering mechanism includes a wheel bracket 10, a wheel 20 and a steering drive assembly 30. The wheel 20 is swingably mounted on the wheel bracket 10, and the steering drive assembly 30 is fixedly arranged. The steering drive assembly 30 includes a main body 31, a fork member 32, a linear drive member 33, a follower 34 and a driving connecting rod 35. The main body 31 is fixedly mounted, the fork member 32 is rotatably hinged on the main body 31, and the hinge point 321 is located between the two ends of the fork member 32. The linear drive member 33 is mounted on the main body 31, and the output end of the linear drive member 33 is drivingly connected to the first end of the fork member 32. The follower 34 is slidably mounted on the main body 31, and the follower 34 is connected to the second end of the fork member 32. Two driving connecting rods 35 are respectively connected to the two sides of the follower 34 and between the two wheels 20, and the driving connecting rod 35 is used to drive the wheel 20 to swing.

[0024] By applying the technical solution of the present invention, the linear drive member 33 works, and the output end of the linear drive member 33 drives the first end of the fork member 32 to move around the hinge point 321, and the second end of the fork member 32 drives the follower 34 to move, so that the follower 34 drives the two wheels 20 to swing at the same time through the two driving connecting rods 35, thereby realizing the steering of the wheels. Compared with the prior art, the technical solution of the present invention has a simpler composition of the steering drive assembly 30, and through the driving method of the fork member 32, the torque can be further amplified, making it easier to drive the wheels 20 to swing.

[0025] Specifically, Figure 1 As shown, the linear drive member 33 moves to the left, driving the first end of the fork member 32 to move to the left, thereby causing the second end of the fork member 32 to move to the right, causing the follower 34 to move to the right while driving the two drive connecting rods 35 to move to the right at the same time. Figure 2 As shown, the two wheels 20 can be swung to the left.

[0026] Similarly, the linear drive member 33 moves to the right, driving the first end of the fork member 32 to move to the right, thereby causing the second end of the fork member 32 to move to the left, causing the follower member 34 to move to the left while driving the two drive connecting rods 35 to move to the left at the same time. Figure 2 As shown, the two wheels 20 can be swung to the right.

[0027] Optionally, in the technical solution of this embodiment, the linear drive member 33 is extended in the horizontal direction.

[0028] like Figure 1 As shown in the figure, as a preferred embodiment, the distance from the first end of the fork member 32 to the hinge point 321 is greater than the distance from the second end of the fork member 32 to the hinge point 321. In this way, the driving torque of the linear drive member 33 can be better amplified. This embodiment can achieve a large torque turning by the power member by increasing the lever principle.

[0029] In order to make the follower 34 move more smoothly, Figure 1 As shown, the steering drive assembly 30 includes a first linear guide 36 and a first slider 37. The first linear guide 36 is mounted on the main body 31, and the follower 34 is slidably mounted on the first linear guide 36 through the first slider 37. Preferably, the first linear guide 36 is also extended in the horizontal direction, so that the wheel steering mechanism can be ensured to move horizontally without moving up and down.

[0030] In the technical solution of this embodiment, Figure 1As shown, the linear drive member 33 includes a motor 331 and a screw nut device. The motor 331 is connected to the screw end of the screw nut device, and the nut end of the screw nut device is drivingly connected to the first end of the fork member 32. When in use, the screw nut device converts the rotational motion of the motor 331 into linear motion, thereby driving the first end of the fork member 32 to rotate around the hinge point 321. More preferably, the linear drive member 33 includes a gear set 332, which is installed between the motor 331 and the screw end of the screw nut device. Figure 1 As shown, the motor 331 and the lead screw nut device can be installed side by side through the gear set 332 to reduce space occupation and change the output speed and torque of the motor 331 at the same time.

[0031] As other optional implementations, the linear drive member 33 may also be a linear motion component such as a movable cylinder or an electric cylinder or a linear motor, and these linear motion components may all drive the first end of the fork member 32 .

[0032] It should be noted that in the present invention, the motion trajectory of the linear motion component is a straight line. As other equivalent alternative embodiments, the motion trajectory of the linear motion component can also be set to a curve as needed, which will be more consistent with the motion trajectory of the first end of the fork member 32.

[0033] More preferably, in order to provide stability in the movement of the first end of the fork member 32, as Figure 1 As shown, the linear drive member 33 also includes a second linear guide rail 333 and a second slider 334 installed on the second linear guide rail 333 , the second slider 334 is connected to the nut end of the screw nut device, and the first end of the fork member 32 is drivingly connected to the second slider 334 .

[0034] Optionally, in the technical solution of this embodiment, the wheel bracket 10 is installed on the main body 31 through the suspension 40. The wheel bracket 10 is installed through the suspension 40 to enhance the shock absorption effect. Figure 2 As shown, in the technical solution of this embodiment, the suspension 40 and the main body 31 are indirectly connected through some structures of the vehicle body. Figure 2 In order to conveniently embody the wheel steering mechanism of the present invention, the vehicle body is omitted.

[0035] As a more preferred embodiment, Figure 1 As shown, the wheel steering mechanism further includes a position detector 50, which is used to detect the moving position of the fork member 32 or the moving position of the follower 34. Proportional control can be performed through position detection by the position detector 50, and proportional control can be performed according to the control input amount, rather than a jog or start-stop control method.

[0036] The present invention also provides a vehicle, comprising the above-mentioned wheel steering mechanism. The above-mentioned wheel steering mechanism can realize the wheel swinging with low cost and high reliability, and is more suitable for miniaturized vehicles.

[0037] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0038] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0039] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wheel steering mechanism, characterized in that: include: Wheel bracket (10); A wheel (20) is swingably mounted on the wheel bracket (10); A steering drive assembly (30) is fixedly arranged on the vehicle body, and the steering drive assembly (30) comprises: A main body (31) is fixedly mounted on the vehicle body; A shift fork member (32) is rotatably hinged on the main body (31), a hinge point (321) is located between two ends of the shift fork member (32), and a distance from a first end of the shift fork member (32) to the hinge point (321) is greater than a distance from a second end of the shift fork member (32) to the hinge point (321); A linear drive member (33) is mounted on the main body (31), wherein an output end of the linear drive member (33) is drivingly connected to a first end of the fork member (32), and the linear drive member (33) comprises: Motor (331); A screw nut device, the motor (331) is connected to the screw end of the screw nut device, and the nut end of the screw nut device is drivingly connected to the first end of the shift fork member (32); a gear set (332), the gear set (332) being mounted between the motor (331) and the screw end of the screw nut device; A follower (34) is slidably mounted on the main body (31), and the follower (34) is connected to the second end of the fork member (32); Two driving connecting rods (35) are respectively connected to the two sides of the follower (34) and between the two wheels (20), and the driving connecting rods (35) are used to drive the wheels (20) to swing; The steering drive assembly (30) comprises a first linear guide rail (36) and a first slider (37), wherein the first linear guide rail (36) is mounted on the main body (31), and the follower (34) is slidably mounted on the first linear guide rail (36) via the first slider (37); The linear drive member (33) further comprises a second linear guide rail (333) and a second slider (334) mounted on the second linear guide rail (333); the second slider (334) is connected to the nut end of the lead screw nut device; and the first end of the shift fork member (32) is drivingly connected to the second slider (334).

2. The wheel steering mechanism according to claim 1, characterized in that: The wheel bracket (10) is mounted on the main body (31) via a suspension (40).

3. The wheel steering mechanism according to claim 1, characterized in that: The wheel steering mechanism further comprises a position detector (50), wherein the position detector (50) is used to detect the moving position of the fork member (32) or the moving position of the follower member (34).

4. A vehicle, comprising a wheel steering mechanism, characterized in that: The wheel steering mechanism is the wheel steering mechanism according to any one of claims 1 to 3.

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