KR-20260062573-A - Multi-purpose 3-wheel electric mobility with forward and backward direction change

KR20260062573AKR 20260062573 AKR20260062573 AKR 20260062573AKR-20260062573-A

Abstract

The present invention relates to a multi-purpose three-wheeled electric mobility vehicle capable of forward and backward turning. The three-wheeled electric mobility according to the present invention is designed to drive in dense cultivation environments such as small livestock barns, orchards, or horticultural facilities, or in narrow spaces such as traditional markets with narrow passages, and is capable of forward and backward direction changes without a turning radius.

Inventors

강대식
김승완
김현

Assignees

주식회사 그린맥스

Dates

Publication Date: 20260507
Application Date: 20241029

Claims (10)

A three-wheeled electric mobility vehicle designed to enable forward and backward turning without a turning radius by being equipped with a rotatable saddle and electronic control functions for forward and backward turning, A driving chassis frame including a plurality of beam assemblies; A loading lifting unit comprising a cargo box having a predetermined internal space and designed to be mounted on the driving chassis frame and lifted at an acute angle; A three-wheel drive unit comprising: front wheels whose left and right steering is controlled by a steering wheel; a pair of rear wheels that rotate by receiving power generated from a drive motor; an axle shaft coupled to the pair of rear wheels; and a gearbox that transmits power provided from the drive motor to the pair of rear wheels; A driving steering unit comprising a steering handle that controls the left and right steering direction of the front wheels included in the above-mentioned three-wheel drive unit and the speed and forward/reverse direction change of the three-wheel electric mobility, a saddle on which a driver sits, and a vertical upright rotation inducing member that induces rotation of the steering handle and the saddle so that the positions of the steering handle and the saddle are interchangeable; and A three-wheel electric mobility comprising: a control unit that controls the driving of the three-wheel drive unit according to the speed and forward/reverse direction change control signals of the three-wheel electric mobility provided from the steering handle included in the driving steering unit.
In Article 1, The above cargo box is, A first loading area having a first trapezoidal shape with a first inclination angle; and A three-wheeled electric mobility comprising: a second loading area having a second trapezoidal shape located above the first loading area and having a second angle of inclination greater than the first angle of inclination.
In Article 1, The above loading lifting unit is, It further includes a pair of hydraulic cylinders located on the lower sides of the above-mentioned cargo box, and The above control unit is, A three-wheeled electric mobility vehicle that controls the drive of the above pair of hydraulic cylinders to induce the cargo box to be lifted upward.
In Article 1, The above loading lifting unit is, It further includes a lifting bar attached to one side of the above-mentioned cargo box, and The above cargo box is, A three-wheeled electric mobility vehicle that is acutely lifted in accordance with the upward movement of the above lifting bar.
In Article 1, The gearbox included in the above-mentioned three-wheel drive unit is, A ring gear that rotates in engagement with the rotation of a drive pinion gear directly connected to the drive motor and has a rotation axis orthogonal to the drive pinion gear; A differential pinion gear that receives rotational power from the ring gear and rotates having a rotation axis horizontal to the drive pinion gear; and A three-wheeled electric mobility comprising: a differential side gear coupled to the end of the axle shaft and rotating by receiving rotational power from the differential pinion gear.
In Article 1, The steering wheel included in the above-mentioned driving steering unit is, A left handle including forward/reverse direction change buttons and a brake lever; A handle bar including a battery status display area that displays the charge status of the battery; and A three-wheeled electric mobility vehicle including a right handle comprising a forward/reverse speed control button and a driving on/off button.
In Article 1, The saddle included in the above-mentioned driving steering unit is, Driver seating area; An internal rod connected to the above-mentioned driver seating area to guide the driver's seating height adjustment; An insertion guide member into which the above-mentioned insertion rod is inserted; and A three-wheeled electric mobility vehicle comprising: an insertion control bar located on one side of the insertion guide member and controlling the insertion depth of the insertion rod to adjust the seating height of the driver.
In Article 1, The above-mentioned vertical upright rotation inducing member is, It includes a rotary electric motor internally that induces rotation of the steering handle and the saddle so that the positions of the steering handle and the saddle are interchangeable, and The above control unit is, A three-wheeled electric mobility that controls the driving of the rotary electric motor according to a forward/reverse direction change control signal provided from the steering handle.
In Paragraph 8, The above-mentioned vertical upright rotation inducing member is, A three-wheeled electric mobility vehicle comprising, internally, a limit switch that detects whether the steering handle and the saddle rotate beyond a preset rotation angle and generates a forward/reverse direction change confirmation signal.
In Article 9, The above control unit is, A three-wheel electric mobility that controls the driving of a three-wheel drive unit by controlling the rotation direction of the drive motor so that a pair of rear wheels included in the three-wheel drive unit rotate in a direction opposite to the previous driving direction after receiving a forward/reverse direction change confirmation signal generated by the limit switch.

Description

Multi-purpose 3-wheel electric mobility with forward and backward direction change The present invention relates to a multi-purpose three-wheeled electric mobility vehicle capable of forward and backward turning. Specifically, the present invention relates to a multi-purpose three-wheeled electric mobility capable of forward and backward turning without a turning radius, designed to drive in dense cultivation environments such as small livestock barns, orchards, or horticultural facilities, or in narrow spaces such as traditional markets with narrow passages. Agriculture is an industry essential for human survival as it produces food, but it is also the slowest industry to innovate because traditional agricultural techniques are maintained. Although there is a trend of incorporating Fourth Industrial Revolution technologies into agriculture, there is a labor shortage in rural areas, leading to an increase in the participation rate of women and the elderly in farming. However, small-scale farms with a cultivated area of 300 pyeong or less account for 90% of total agriculture. In these small-scale farms, the transportation of agricultural materials and harvesting rely on the labor of female or elderly farmers, which causes various diseases among farmers, such as musculoskeletal injuries and chronic back pain, and has become a major factor hindering a sustainable agricultural growth environment. Meanwhile, in traditional commercial districts such as traditional markets or densely populated shopping areas, the movement of goods by small business owners and self-employed individuals also conventionally relies on methods such as rickshaws or handcarts, but this method is very inefficient and consumes excessive physical strength, making it undesirable in terms of work efficiency. Therefore, there is a need for the development of mobility products capable of moving goods in dense farming environments such as small livestock barns, orchards, or horticultural facilities, or in narrow spaces such as traditional markets with narrow passageways. In particular, considering the characteristics of narrow spaces, there is a need for the development of user-friendly products that allow for easy changes in driving routes. FIG. 1 is an exemplary diagram illustrating a forward and backward direction change method of a three-wheeled electric mobility according to the present invention. FIG. 2 is a perspective view of a three-wheeled electric mobility vehicle according to the present invention. FIG. 3 is an example drawing of a driving chassis frame structure included in a three-wheeled electric mobility according to the present invention. FIG. 4 is a side view of a three-wheeled electric mobility according to the present invention. FIG. 5 is a diagram illustrating that a cargo box included in a three-wheeled electric mobility according to the present invention is lifted at an acute angle. FIG. 6 is a drawing for explaining the detailed structure of a three-wheel drive unit included in a three-wheel electric mobility according to the present invention. FIG. 7 is an exemplary drawing of a structure of a gearbox within a three-wheel drive unit included in a three-wheel electric mobility according to the present invention. FIG. 8 is an example drawing of the detailed structure of a steering handle within a driving steering unit included in a three-wheeled electric mobility according to the present invention. FIG. 9 is an exemplary drawing of a structure of a saddle within a driving steering unit included in a three-wheeled electric mobility according to the present invention. FIG. 10 is a block diagram illustrating a rotational direction control mechanism of a drive motor based on forward/backward direction change confirmation performed in a control unit of a three-wheeled electric mobility according to the present invention. Hereinafter, the present invention will be explained in more detail with reference to drawings and examples. In this specification, singular expressions include plural expressions unless otherwise specified. The terms used in this specification have been selected based on currently widely used general terms, taking into account their functions in the present invention; however, these terms may vary depending on the intent of those skilled in the art, case law, the emergence of new technologies, etc. Additionally, in specific cases, terms have been arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the relevant description of the invention. Therefore, terms used in this invention should be defined not merely by their names, but based on their meanings and the overall content of the invention. In this specification, terms such as "first," "second," etc., may be used to describe various components, but the components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. In this specification, ter