Steering wheel mechanism and automatic navigation device

Abstract

The utility model discloses a steering wheel mechanism and an automatic navigation device. The steering wheel mechanism comprises a supporting assembly. The steering assembly is arranged on the supporting assembly and can drive the supporting assembly to conduct steering operation relative to the chassis; the hinging frame is movably hinged to the supporting assembly through a hinging shaft assembly; the two ends of the damping assembly are hinged to the supporting assembly and the hinge frame through hinge shaft assemblies correspondingly; and the driving wheel assembly is fixedly connected with the hinge frame, and damping operation is achieved through cooperation of the hinge frame and the damping assembly. According to the steering wheel mechanism, the supporting assembly, the steering assembly, the hinge frame, the damping assembly and the driving wheel assembly are matched with one another, and the problem that an existing steering wheel mechanism is complex in structure and assembly is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steering wheels, in particular to a steering wheel mechanism and an automatic navigation device. Background Art

[0002] An Automated Guided Vehicle (AGV) is a device that uses one or more steering wheels to provide power for transport operations. The steering wheel is a power module capable of driving forward and backward and actively steering. The drive motor on the steering wheel is only responsible for driving, and the steering motor is only responsible for steering, allowing for appropriate power selection.

[0003] Publication number CN110789331A provides a robotic servo steering wheel, which includes a drive wheel module and a steering module. The drive wheel module includes a wheel body, a drive motor, and a shock-absorbing bracket, with the drive motor connected to the drive wheel via the shock-absorbing bracket. The steering module includes a steering motor, a reduction mechanism, and a rotating shaft. The output shaft of the steering motor is connected to the input end of the reduction mechanism, the output end of the reduction mechanism is connected to the rotating shaft, and the other end of the rotating shaft is connected to the shock-absorbing bracket. The drive motor drives the wheel body to rotate; the output power of the steering motor is reduced by the reduction mechanism and then transmitted to the rotating shaft to drive the shock-absorbing bracket to steer. Although this technical solution can effectively achieve driving and steering operations, its structure is relatively complex and assembly is relatively cumbersome. Therefore, a steering wheel mechanism and automatic navigation device are provided to address the above problems. Summary of the Invention

[0004] One of the purposes of the present invention is to provide a steering wheel mechanism and an automatic navigation device so as to solve the problem that the existing steering wheel mechanism has a relatively complicated structure and assembly.

[0005] The steering wheel mechanism and automatic navigation device of the utility model can be realized by the following technical solutions:

[0006] The utility model provides a steering wheel mechanism comprising a support assembly; a steering assembly, which is arranged on the support assembly, the steering assembly is fixedly connected to the chassis, and can drive the support assembly to perform a steering operation relative to the chassis; an articulated frame, which is movably hinged to the support assembly through an articulated shaft assembly; a shock-absorbing assembly, the two ends of which are respectively articulated to the support assembly and the articulated frame through articulated shaft assemblies; and a driving wheel assembly, which is fixedly connected to the articulated frame, and the driving wheel assembly realizes a shock-absorbing operation through the cooperation of the articulated frame and the shock-absorbing assembly.

[0007] In one embodiment, the support assembly includes a support frame body having a 7-shaped shape, and a wire groove is provided on the support frame body; and a cover plate is fixedly provided on the wire groove.

[0008] In one embodiment, a first hinge hole and a second hinge hole are respectively formed through the support frame body; the hinge frame and the shock absorption assembly are respectively movably hinged to the first hinge hole and the second hinge hole through the hinge shaft assembly.

[0009] In one embodiment, a third hinge hole and a fourth hinge hole are respectively formed through opposite ends of the hinge frame, and the position of the third hinge hole corresponds to the position of the first hinge hole; a pin hole is also formed through the hinge frame.

[0010] In one embodiment, the drive wheel assembly is fixedly connected to the hinge frame through a threaded structure or a flange structure.

[0011] In one embodiment, the steering assembly includes a fixed seat fixedly arranged on the support frame body; a steering motor fixedly connected to the fixed seat, the steering motor is a joint motor, and a through hole is formed through the center position thereof.

[0012] In one embodiment, the shock absorption assembly includes a fixed rod and a movable rod, the fixed rod is a hollow rod body, one end of which is hinged to the hinge frame through the hinge shaft assembly; one end of the movable rod is movably arranged in the fixed rod, and the other end thereof is hinged to the support assembly through the hinge shaft assembly; a first retaining piece threadedly connected to the fixed rod; a second retaining piece formed through the movable rod; and a shock absorption spring arranged between the first retaining piece and the second retaining piece.

[0013] In one embodiment, the drive wheel assembly includes a drive wheel body; a connecting shaft fixedly arranged on one side of the drive wheel body, one end of which is fixedly arranged on the hinge frame, and the connecting shaft is a hollow rod body.

[0014] In one embodiment, the hinge shaft assembly includes a hinge shaft body which is formed through the support assembly or the hinge frame; a bushing formed through the hinge shaft body; and two fixing pieces respectively snap-fitted at both ends of the hinge shaft body.

[0015] An automatic navigation device of the present utility model includes the steering wheel mechanism described in any one of the above.

[0016] Compared with the prior art, the beneficial effects of a steering wheel mechanism and an automatic navigation device of the present utility model are as follows:

[0017] The steering wheel mechanism and the automatic navigation device of the present utility model achieve steering operations through a steering component; and then achieve driving and shock absorption operations through the cooperation of a hinge frame, a shock absorption component and a driving wheel component, so as to adapt to the ground of different road conditions, ensure that the driving wheel component is in contact with the ground and does not slip. At the same time, the shock absorption component can effectively reduce the impact of the ground, and can also increase the normal pressure of the driving wheel component, ensure the normal pressure required by the steering wheel mechanism, make the structure and assembly of the steering wheel mechanism relatively simple, and effectively solve the problem that the structure and assembly of the existing steering wheel mechanism are relatively complex. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a schematic structural diagram of a steering wheel mechanism of the present utility model;

[0020] Figure 2 is Figure 1 a schematic structural diagram of another perspective of a steering wheel mechanism of the present utility model shown in the figure, including a support component, a hinge frame, a shock absorption component, a driving wheel component and a hinge shaft component;

[0021] Figure 3 is Figure 2 an exploded structural diagram of the support component shown in the figure;

[0022] Figure 4 is Figure 2 a schematic structural diagram of the hinge frame shown in the figure;

[0023] Figure 5 is Figure 2 a schematic structural diagram of the shock absorption component shown in the figure;

[0024] Figure 6 is Figure 2 a schematic structural diagram of the driving wheel component shown in the figure;

[0025] Figure 7 is Figure 2 an exploded structural diagram of the hinge shaft component shown in the figure.

[0026] Labels in the figure: 10, steering wheel mechanism; 11, support assembly; 111, main body of the support frame; 1111, first hinge hole; 1112, second hinge hole; 1113, wire groove; 1114, fixing hole; 112, cover plate; 12, steering assembly; 121, fixing seat; 122, steering motor; 1221, through hole; 13, hinge frame; 131, third hinge hole; 132, fourth hinge hole; 133, pin hole; 1331, first cutting edge; 14, shock absorption assembly; 141, fixing rod; 1411, first connecting head; 1412, threaded rod; 142, movable rod; 1421, second connecting head; 1422, main body of the movable rod; 143, first retaining piece; 144, second retaining piece; 145, shock absorption spring; 15, driving wheel assembly; 151, main body of the driving wheel; 152, connecting shaft; 1521, threaded part; 1522, second cutting edge; 16, hinge shaft assembly; 161, main body of the hinge shaft; 1611, card slot; 162, bushing; 163, fixing piece; 1631, circlip; 1632, fastening screw; 17, connecting wire. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0029] Please refer to Figure 1 and Figure 2As shown in the figure, a steering wheel mechanism 10 of the present utility model mainly includes a support assembly 11, a steering assembly 12, a hinge frame 13, a shock absorption assembly 14 and a driving wheel assembly 15; the support assembly 11 is the support main body; the steering assembly 12 is arranged on the support assembly 11 and is fixedly connected to the chassis. The steering assembly 12 can drive the support assembly 11 to perform a steering operation relative to the chassis; one end of the hinge frame 13 is movably hinged to the support assembly 11; one end of the shock absorption assembly 14 is connected to the support assembly 11, and the other end is connected to the hinge frame 13; the driving wheel assembly 15 is fixedly connected to the hinge frame 13, and it realizes a shock absorption operation through the cooperation of the hinge frame 13 and the shock absorption assembly 14, so as to adapt to the ground of different road conditions, ensure that the driving wheel assembly 15 is in contact with the ground and does not slip. At the same time, the shock absorption assembly 14 can effectively reduce the impact of the ground and can also increase the normal pressure of the driving wheel assembly 15 to ensure the normal pressure required by the steering wheel mechanism 10.

[0030] Please refer to Figures 1-3 As shown in the figure, in this embodiment, the support assembly 11 includes a support frame main body 111 and a cover plate 112. The shape of the support frame main body 111 is in the shape of a "7". A wire groove 1113 is provided on the support frame main body 111, and a connecting wire 17 electrically connected to the driving wheel assembly 15 is accommodated in the wire groove 1113; the cover plate 112 is fixedly arranged on the wire groove 1113, and it protects the connecting wire 17 arranged in the wire groove 1113. Specifically, a first hinge hole 1111 and a second hinge hole 1112 are respectively penetrated through the support frame main body 111, and the hinge frame 13 and the shock absorption assembly 14 are respectively movably hinged to the first hinge hole 1111 and the second hinge hole 1112 through a hinge shaft assembly 16; a fixing hole 1114 is also provided on the support frame main body 111, and the steering assembly 12 is fixedly arranged on the support frame main body 111 through the fixing hole 1114.

[0031] Please refer to Figure 1 and Figure 2 As shown in the figure, in this embodiment, the steering assembly 12 includes a fixed seat 121 and a steering motor 122; the fixed seat 121 is fixedly arranged on the support frame main body 111 through the fixing hole 1114; the steering motor 122 is fixedly connected to the fixed seat 121, and it drives the support assembly 11 to perform a steering operation through the fixed seat 121. Specifically, the steering motor 122 is a joint motor, and a through hole 1221 is penetrated through its central position, which is convenient for the connecting wire 17 to be electrically connected to the automatic navigation device through the through hole 1221.

[0032] Please refer to Figure 1 、 Figure 2 and Figure 4As shown, in this embodiment, third hinge holes 131 and fourth hinge holes 134 are respectively penetrated through opposite ends of the hinge frame 13. The position of the third hinge hole 131 corresponds to the position of the first hinge hole 1111. The hinge shaft assembly 16 sequentially penetrates through the first hinge hole 1111 and the third hinge hole 131, so that the hinge frame 13 can rotate relative to the support frame body 111. A pin hole 133 is also penetrated through the hinge frame 13. The drive wheel assembly 15 is fixedly connected to the hinge frame 13 through the pin hole 133. Specifically, internal threads are provided in the pin hole 133, and one end of the drive wheel assembly 15 is fixedly threadedly connected in the pin hole 133. First cutting edges 1331 are provided on opposite sides inside the pin hole 133. In some other embodiments, the drive wheel assembly 15 can also be fixedly connected to the hinge frame 13 through a flange structure.

[0033] Please refer to Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the shock absorption assembly 14 includes a fixed rod 141, a movable rod 142, a first retaining piece 143, a second retaining piece 144, and a shock absorption spring 145. The fixed rod 141 is a hollow rod body, and one end thereof is hinged to the fourth hinge hole 132 on the hinge frame 13 through the hinge shaft assembly 16. One end of the movable rod 142 is movably arranged in the fixed rod 141, and the other end thereof is hinged to the second hinge hole 1112 on the support frame body 111 through the hinge shaft assembly 16. The first retaining piece 143 is threadedly connected to the fixed rod 141 and can adjust its position on the fixed rod 141. The second retaining piece 144 is penetrated through the movable rod 142. The shock absorption spring 145 is arranged between the first retaining piece 143 and the second retaining piece 144.

[0034] Please refer to Figure 5 As shown, specifically, the fixed rod 141 includes a first connection head 1411 and a threaded rod 1412. The first connection head 1411 is hinged to the fourth hinge hole 132 on the hinge frame 13 through the hinge shaft assembly 16. The threaded rod 1412 is a hollow rod body, which is fixedly arranged on one side of the first connection head 1411. One end of the movable rod 142 is movably arranged in the threaded rod 1412, and the first retaining piece 143 is threadedly connected to the threaded rod 1412. Specifically, the movable rod 142 includes a second connection head 1421 and a movable rod body 1422. The second connection head 1421 is hinged to the second hinge hole 1112 on the support frame body 111 through the hinge shaft assembly 16. The movable rod body 1422 is fixedly arranged on one side of the second connection head 1421, and it is movably arranged in the threaded rod 1412. The second retaining piece 144 is penetrated through the movable rod body 1422.

[0035] Please refer to Figure 1 , Figure 2 and Figure 6As shown, in this embodiment, the drive wheel assembly 15 includes a drive wheel main body 151 and a connecting shaft 152. The drive wheel main body 151 adopts a hub motor drive method, which is an existing technology, so the specific working process and structure will not be described in detail here as long as it meets the requirements of this application. One end of the connecting shaft 152 is fixedly arranged on one side of the drive wheel main body 151, and the other end is fixedly arranged in the pin hole 133. The connecting shaft 152 is a hollow rod body to facilitate the connection line electrically connected to the drive wheel main body 151 to pass through the connecting shaft 152. Specifically, a threaded portion 1521 is arranged on the outer side of the connecting shaft 152, and the threaded portion 1521 is threadedly connected to the pin hole 133. Second cutting edges 1522 are arranged on two opposite sides of the connecting shaft 152, which correspond to the first cutting edges 1331 in the pin hole 133.

[0036] Please refer to Figure 1 、 Figure 2 [[ID=—7]]and Figure 7 As shown, in this embodiment, the articulated shaft assembly 16 includes an articulated shaft main body 161, a shaft sleeve 162 and two fixing members 163. The articulated shaft main body 161 is arranged through the support assembly 11 or the articulated frame 13. The shaft sleeve 162 is arranged through the articulated shaft main body 161. The two fixing members 163 are respectively clamped at both ends of the articulated shaft main body 161, and the two of them cooperate to arrange the articulated shaft main body 161 on the support assembly 11 or the articulated frame 13. Specifically, clamping grooves 1611 are respectively arranged at both opposite ends of the articulated shaft main body 161, and the fixing members 163 cooperate with the clamping grooves 1611 to arrange the articulated shaft main body 161 on the support assembly 11 or the articulated frame 13. The fixing members 163 include a snap ring 1631 and two fastening screws 1632. The snap ring 1631 is clamped in the clamping groove 1611. The two fastening screws 1632 are respectively arranged through the snap ring 1631, and the snap ring 1631 is fixedly arranged on the support assembly 11 or the articulated frame 13.

[0037] The automatic navigation device of the present invention includes the steering wheel mechanism 10 of any one of the above.

[0038] It should be noted that the specific working process of the steering wheel mechanism and the automatic navigation device of the present invention is as follows: the steering operation is realized through the steering assembly 12; the driving and damping operation is realized through the cooperation of the articulated frame 13, the damping assembly 14 and the drive wheel assembly 15, so as to adapt to the ground of different road conditions, ensure that the drive wheel assembly 15 is in contact with the ground and does not slip, and at the same time, the damping assembly 14 can effectively reduce the impact of the ground and can also increase the normal pressure of the drive wheel assembly 15 to ensure the normal pressure required by the steering wheel mechanism 10.

[0039] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0040] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A steering wheel mechanism, characterized in that, Comprising: A support assembly; A steering assembly, which is arranged on the support assembly, is fixedly connected to the chassis, and can drive the support assembly to perform a steering operation relative to the chassis; A hinge frame, which is movably hinged to the support assembly through a hinge shaft assembly; A shock absorption assembly, the two ends of which are respectively hinged to the support assembly and the hinge frame through a hinge shaft assembly; A drive wheel assembly, which is fixedly connected to the hinge frame, and the drive wheel assembly realizes a shock absorption operation through the cooperation of the hinge frame and the shock absorption assembly.

2. The steerable wheel mechanism according to claim 1, wherein, The support assembly includes a support frame body, the shape of which is "7" - shaped, and a wire groove is arranged on the support frame body; a cover plate fixedly arranged on the wire groove.

3. A steering wheel mechanism according to claim 2, characterized in that: A first hinge hole and a second hinge hole are respectively penetrated through the support frame body; the hinge frame and the shock absorption assembly are respectively movably hinged to the first hinge hole and the second hinge hole through the hinge shaft assembly.

4. The steering wheel mechanism according to claim 3, characterized in that, A third hinge hole and a fourth hinge hole are respectively penetrated through the opposite ends of the hinge frame, and the position of the third hinge hole corresponds to the position of the first hinge hole; a pin hole is also penetrated through the hinge frame.

5. A steering wheel mechanism according to claim 4, characterized in that, The drive wheel assembly is fixedly connected to the hinge frame through a threaded structure or a flange structure.

6. The steerable wheel mechanism according to claim 2, wherein, The steering assembly includes a fixed seat, which is fixedly arranged on the support frame body; a steering motor fixedly connected to the fixed seat, the steering motor is a joint motor, and a through hole is penetrated through the center position thereof.

7. The steering wheel mechanism according to claim 1, characterized in that, The shock absorption assembly includes a fixed rod and a movable rod, the fixed rod is a hollow rod body, one end of which is hinged to the hinge frame through the hinge shaft assembly; one end of the movable rod is movably arranged in the fixed rod, and the other end of which is hinged to the support assembly through the hinge shaft assembly; a first retaining piece threadedly connected to the fixed rod; a second retaining piece penetrated through the movable rod; a shock absorption spring arranged between the first retaining piece and the second retaining piece.

8. A steering wheel mechanism according to claim 1, characterized in that, The drive wheel assembly includes a drive wheel body; a connecting shaft fixedly arranged on one side of the drive wheel body, one end of which is fixedly arranged on the hinge frame, and the connecting shaft is a hollow rod body.

9. A steering wheel mechanism according to claim 1, characterized in that, The hinge shaft assembly includes a hinge shaft body, which is penetrated through the support assembly or the hinge frame; a bushing penetrated through the hinge shaft body; two fixing pieces respectively clamped at both ends of the hinge shaft body.

10. An automatic navigation device, characterized in that, Comprising the steering wheel mechanism according to any one of claims 1 - 9.

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