CN216497457U

CN216497457U - Steering device and moving trolley

Info

Publication number: CN216497457U
Application number: CN202122389032.3U
Authority: CN
Inventors: 饶谦彬; 郝计军; 解俊杰; 刘培超
Original assignee: Shenzhen Yuejiang Technology Co Ltd
Current assignee: Shenzhen Yuejiang Technology Co Ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-05-13
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a steering device and a travelling car, wherein the steering device comprises a car frame, a first connecting arm, a second connecting arm, a tie rod, a link mechanism and a steering engine, wherein one end of the first connecting arm is rotatably connected with the car frame, the other end of the first connecting arm is rotatably connected with one end of the tie rod, one end of the second connecting arm is rotatably connected with the car frame, and the other end of the second connecting arm is rotatably connected with the other end of the tie rod; two ends of the connecting rod mechanism are respectively connected with an output shaft of the steering engine and the tie rod, and the steering engine, the connecting rod mechanism, the tie rod, the first connecting arm and the second connecting arm transmit torque in a plane. The torque transmission of the steering device is carried out in the same plane, the torque output efficiency is high, so a steering engine with small volume can be adopted, and a fisheye bearing joint with larger volume is not arranged, so that the volume of the whole structure is reduced, and the occupied space is small.

Description

Steering device and moving trolley

Technical Field

The utility model relates to the technical field of moving trolleys, in particular to a steering device and a moving trolley.

Background

At present, most toy cars or education simulation trolleys are provided with front wheel steering mechanisms, the front wheel steering mechanisms are generally of a trapezoidal structure designed based on the Ackerman steering principle, and power for driving trapezoidal connecting rod structure deformation is provided through steering engines.

At present, a steering engine is generally horizontally arranged in the middle of a moving trolley, a torque generated by the rotation of an output shaft of the steering engine in a vertical plane is converted into a torque in a horizontal plane through a fisheye bearing joint to be output to a trapezoidal structure, and the output torque efficiency is low. Wherein, the fisheye bearing joint that sets up is bulky to, in order to reach high output torque efficiency, also need use the great steering wheel of volume, thereby lead to turning to the whole great space that occupies of structure.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a steering device, and aims to solve the technical problem that the conventional steering structure of a movable trolley occupies a large space.

In order to achieve the purpose, the utility model provides a steering device which comprises a frame, a first connecting arm, a second connecting arm, a tie rod, a link mechanism and a steering engine, wherein one end of the first connecting arm is rotatably connected with the frame, the other end of the first connecting arm is rotatably connected with one end of the tie rod, one end of the second connecting arm is rotatably connected with the frame, and the other end of the second connecting arm is rotatably connected with the other end of the tie rod;

two ends of the connecting rod mechanism are respectively connected with an output shaft and a steering tie rod of the steering engine, and the steering engine, the connecting rod mechanism, the steering tie rod, the first connecting arm and the second connecting arm transmit torque in a plane.

Wherein, the steering wheel is located between first linking arm and the second linking arm.

The steering gear comprises a steering gear, a steering wheel, a connecting rod mechanism and a steering wheel, wherein the connecting rod mechanism comprises a swing rod and a transmission rod, one end of the swing rod is fixedly connected with an output shaft of the steering gear, the other end of the swing rod is rotatably connected with one end of the transmission rod, and the other end of the transmission rod is rotatably connected with a steering tie rod.

Wherein, the output shaft of steering wheel sets up down vertically, and the transfer line is located the below of tie rod.

Wherein, the pendulum rod is located the below of transfer line.

Wherein, the one end of being connected with the output shaft of steering wheel on the pendulum rod has the bulge that extends the setting downwards, corresponds to the structure on the frame to dodge the through-hole of bulge.

Wherein the length ratio of the first connecting arm, the second connecting arm, the steering tie rod, the swing rod and the transmission rod is 1: 3: 1 (0.4-0.5).

Wherein, be equipped with coupling assembling between first linking arm and the second linking arm and the frame respectively, coupling assembling is including rotating the first axle sleeve that sets up on the frame, and first axle sleeve is located the below of first linking arm and second linking arm, and first linking arm and second linking arm are connected through first fastener with first axle sleeve.

The connecting assembly further comprises a rotating second shaft sleeve, the second shaft sleeve is located above the first connecting arm and the second connecting arm, the first connecting arm and the second connecting arm are connected with the second shaft sleeve through a second fastener, and the second shaft sleeve and the first shaft sleeve are arranged oppositely.

The utility model also provides a mobile trolley which comprises the steering device.

Compared with the prior art, the technical scheme of the utility model has the beneficial effects that:

the steering engine, the connecting rod mechanism, the steering tie rod, the first connecting arm and the second connecting arm in the steering device carry out torque transmission in a plane, and the efficiency of torque output is high, so that the steering engine with small volume can be adopted, and the fisheye bearing joint with larger volume is not arranged, so that the volume of the whole structure is reduced, and the occupied space is small.

Drawings

FIG. 1 is a schematic structural diagram of a steering apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the steering device shown in FIG. 1 from another perspective;

FIG. 3 is an exploded view of the steering device of FIG. 1;

FIG. 4 is a schematic view of the length arrangement of the components of the steering apparatus of FIG. 1;

fig. 5 is an exploded view of a part of the structure of the steering device of fig. 1.

Detailed Description

In the following, the embodiments of the present invention will be described in detail with reference to the drawings in the following, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a steering device, and referring to fig. 1, the steering device comprises a frame 100, a first connecting arm 200, a second connecting arm 300, a tie rod 400, a link mechanism 500 and a steering engine 600, wherein one end of the first connecting arm 200 is rotatably connected with the frame 100, the other end of the first connecting arm 200 is rotatably connected with one end of the tie rod 400, one end of the second connecting arm 300 is rotatably connected with the frame 100, and the other end of the second connecting arm 300 is rotatably connected with the other end of the tie rod 400;

both ends of the link mechanism 500 are connected to an output shaft of the steering engine 600 and the tie rod 400, respectively, and the steering engine 600, the link mechanism 500, the tie rod 400, the first connecting arm 200, and the second connecting arm 300 perform torque transmission in a plane.

The steering device of the embodiment can be used for realizing the steering of the front wheels of the moving trolley, and the moving trolley can be an educational simulation type trolley or a toy car. Specifically, the steering device is composed of a frame 100, a first connecting arm 200, a second connecting arm 300, a tie rod 400, a link mechanism 500 and a steering engine 600, wherein the frame 100 may be in a plate or frame structure form, and may be a structural part belonging to or not belonging to a chassis of the mobile cart, and when not being a structural part of the chassis of the mobile cart, the steering device may be installed on the chassis of the mobile cart when specifically arranged. The first connecting arm 200, the second connecting arm 300, the tie rod 400 and a part of the frame 100 form an isosceles trapezoid structure based on the ackermann steering principle, the first connecting arm 200 and the second connecting arm 300 are oppositely arranged in the left and right direction of the frame 100, and one end of the first connecting arm and the other end of the second connecting arm, which are rotatably connected with the frame 100, are connected with a wheel axle of a wheel. Moreover, the above-mentioned rotational connection relationship between the proposed components can be realized by using a copper bushing.

Wherein, the steering engine 600, the link mechanism 500, the tie rod 400, the first connecting arm 200 and the second connecting arm 300 perform torque transmission in a plane, which can be understood as a horizontal plane; by combining the connection relationship among the above-mentioned components, when the output shaft of the steering engine 600 rotates, the torque output by the steering engine 600 is sequentially transmitted, the link mechanism 500 drives the tie rod 400 to move, and the tie rod 400 drives the first connecting arm 200 and the second connecting arm 300 to rotate around the rotation connection points with the frame 100, so as to correspondingly drive the left and right front wheels to steer. It will be readily appreciated that when the output shaft of the steering engine 600 is rotating in the forward or reverse direction, the left and right front wheels will turn left or right.

The steering engine 600, the link mechanism 500, the steering tie rod 400, the first connecting arm 200 and the second connecting arm 300 in the steering device transmit torque in a plane, and the output torque is high in efficiency, so that the steering engine 600 with a small size can be adopted, the fisheye bearing joint with a large size is not arranged, the size of the whole structure is reduced, and the occupied space is small.

In a preferred embodiment, referring to fig. 1 and 2, the steering engine 600 is located between the first connecting arm 200 and the second connecting arm 300. Wherein, have installation space between first linking arm 200 and the second linking arm 300, this embodiment installs steering wheel 600 between first linking arm 200 and second linking arm 300, can avoid installing in other positions in order to occupy the installation space of other structures, realizes the rational utilization in space, is favorable to improving compact structure nature.

In a preferred embodiment, referring to fig. 1 and 2, the link mechanism 500 includes a swing link 510 and a transmission rod 520, wherein one end of the swing link 510 is fixedly connected to an output shaft of the steering engine 600, the other end of the swing link 510 is rotatably connected to one end of the transmission rod 520, and the other end of the transmission rod 520 is rotatably connected to the tie rod 400. When the output shaft of the steering engine 600 rotates, the swing rod 510 is driven to swing, and the tie rod 400 is driven to move through the transmission rod 520. The rotation connection point of the transmission rod 520 and the tie rod 400 is located between two ends of the tie rod 400, and the specific position is set according to actual conditions. In this embodiment, the link mechanism 500 employs the swing rod 510 and the transmission rod 520, and has a simple structure, easy installation and stable transmission.

Further, referring to fig. 1 and 2, the output shaft of the steering engine 600 is disposed vertically downward, and the transmission rod 520 is located below the tie rod 400. This structure sets up the overall arrangement, can make steering tie rod 400 be in steering wheel 600's high space, reduces to turn to device's overall height, helps saving space, makes the structure compacter.

Further, referring to fig. 1 and 2, the swing link 510 is located below the transmission rod 520. This structure sets up the overall arrangement, makes steering wheel 600 down install to the space above the expansion steering wheel 600 of great degree, the setting of other structures of being convenient for.

Further, referring to fig. 3, one end of the swing link 510 connected to the output shaft of the steering engine 600 has a protrusion 511 extending downward, and the frame 100 is correspondingly provided with a through hole 110 avoiding the protrusion 511. In this embodiment, the through hole 110 on the frame 100 accommodates the protrusion 511 of the swing link 510, so that the swing link 510 is disposed adjacent to the frame 100, and thus the steering engine 600 can be further installed downward, the space above the steering engine 600 is enlarged, and the structure compactness is improved.

In a preferred embodiment, the length ratio of the first connecting arm 200, the second connecting arm 300, the tie rod 400, the swing link 510 and the transmission rod 520 is 1: 3: 1 (0.4-0.5).

Referring to fig. 4, the BE segment corresponds to the first link arm 200, the DF segment corresponds to the second link arm 300, the BD segment corresponds to the tie rod 400, the GH segment corresponds to the rocker 510, and the CH segment corresponds to the transmission rod 520. Based on the length ratio relationship of the above components, for example, the lengths of BE and DF are 26mm, the length of BD is 78mm, the length of GH is 26mm, and the length of CH is 11.5 mm; preferably, the length of the EF section (namely, the distance between the left front wheel and the right front wheel) is 96mm, the length of the IJ section (namely, the distance between the front wheel and the rear wheel) is 128.63mm, the length of the BC section is 28mm, and the length of the CD section is 50mm, so as to achieve an ideal geometric relationship; when the steering wheel is turned, the maximum steering angle of the steering inner wheel (left steering is the left front wheel) can reach 39 degrees, the steering angle of the steering outer wheel (right front wheel) is 27.37 degrees and is smaller than the steering angle of the steering inner wheel, the intersection of the normal lines of the steering inner wheel and the steering outer wheel is superposed with the steering circle center of the rear wheel, the steering process that the wheels roll completely and do not slip can be realized, and the steering precision is high.

In a preferred embodiment, referring to fig. 5, a connecting assembly is respectively disposed between the first connecting arm 200 and the second connecting arm 300 and the frame 100, the connecting assembly includes a first sleeve 10 rotatably disposed on the frame 100, the first sleeve 10 is disposed below the first connecting arm 200 and the second connecting arm 300, and the first connecting arm 200 and the second connecting arm 300 are connected to the first sleeve 10 by a first fastener 1. The two connecting components are respectively arranged corresponding to the first connecting arm 200 and the second connecting arm 300, and the first connecting arm 200 and the second connecting arm 300 are rotatably connected with the frame 100 through the connecting components. The connecting assembly comprises a first bushing 10, the first bushing 10 is rotatably disposed on the frame 100 and connected with the first connecting arm 200 and the second connecting arm 300 located above the first bushing by a first fastener 1, so that the first connecting arm 200 and the second connecting arm 300 can rotate on the frame 100. Preferably, the first bushing 10 is preferably a copper bushing. Wherein the first fastening member 1 is a screw.

Further, referring to fig. 5, the connecting assembly further includes a rotating second bushing 20, the second bushing 20 is located above the first connecting arm 200 and the second connecting arm 300, the first connecting arm 200 and the second connecting arm 300 are connected with the second bushing 20 through the second fastening member 2, and the second bushing 20 is disposed opposite to the first bushing 10 up and down. On the basis of the first shaft sleeve 10, the connecting assembly further comprises a second shaft sleeve 20, wherein the second shaft sleeve 20 is installed through a mounting rack on the frame 100 to be positioned above the first connecting arm 200 and the second connecting arm 300 and connected with the first connecting arm 200 and the second connecting arm 300 positioned below the second connecting arm through a second fastener 2. The second shaft sleeve 20 is vertically matched with the first shaft sleeve 10 to further improve the stability of the rotational connection of the first connecting arm 200 and the second connecting arm 300 with the frame 100. Preferably, the second bushing 20 is preferably a copper bushing. Wherein the second fastening member 2 is a screw.

The present invention further provides a mobile cart, which includes the steering device described in the foregoing embodiments, and the specific structure of the steering device refers to the foregoing embodiments, and since the mobile cart adopts all technical solutions of all the foregoing embodiments, the mobile cart at least has all technical effects brought by the technical solutions of the foregoing embodiments, and details are not repeated herein.

The above description is only a part of or preferred embodiments of the present invention, and neither the text nor the drawings should be construed as limiting the scope of the present invention, and all equivalent structural changes, which are made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.

Claims

1. A steering device is characterized by comprising a frame, a first connecting arm, a second connecting arm, a tie rod, a link mechanism and a steering engine, wherein one end of the first connecting arm is rotatably connected with the frame, the other end of the first connecting arm is rotatably connected with one end of the tie rod, one end of the second connecting arm is rotatably connected with the frame, and the other end of the second connecting arm is rotatably connected with the other end of the tie rod;

the two ends of the connecting rod mechanism are respectively connected with the output shaft of the steering engine and the steering tie rod, and the steering engine, the connecting rod mechanism, the steering tie rod, the first connecting arm and the second connecting arm transmit torque in a plane.

2. The steering device of claim 1, wherein the steering engine is located between the first connecting arm and the second connecting arm.

3. The steering device according to claim 1, wherein the link mechanism comprises a swing rod and a transmission rod, one end of the swing rod is fixedly connected with the output shaft of the steering engine, the other end of the swing rod is rotatably connected with one end of the transmission rod, and the other end of the transmission rod is rotatably connected with the tie rod.

4. The steering device according to claim 3, wherein the output shaft of the steering engine is arranged vertically downward, and the transmission rod is located below the tie rod.

5. Steering device according to claim 4, wherein the rocker lever is located below the transmission lever.

6. The steering device according to claim 5, wherein a protrusion extending downwards is formed at one end of the swing rod connected with the output shaft of the steering engine, and a through hole for avoiding the protrusion is correspondingly formed in the frame.

7. The steering device according to claim 3, wherein the length ratio of the first connecting arm, the second connecting arm, the tie rod, the swing link, and the transmission lever is 1: 3: 1 (0.4-0.5).

8. The steering device according to claim 1, wherein a connecting assembly is respectively disposed between the first connecting arm and the second connecting arm and the frame, the connecting assembly includes a first bushing rotatably disposed on the frame, the first bushing is disposed below the first connecting arm and the second connecting arm, and the first connecting arm and the second connecting arm are connected to the first bushing by a first fastening member.

9. The steering device as claimed in claim 8, wherein the connecting assembly further comprises a rotating second bushing, the second bushing is located above the first connecting arm and the second connecting arm, the first connecting arm and the second connecting arm are connected with the second bushing through a second fastener, and the second bushing is arranged opposite to the first bushing.

10. A mobile trolley, characterized in that it comprises a steering device according to any one of claims 1 to 9.