Safe and practical front three-wheel folding multi-purpose vehicle

Abstract

A safe and practical front three-wheel folding multi-purpose vehicle only adopts a square box type folding and stretching front three-wheel structure with the width of a human body, so that the extreme safety guarantee of ultrahigh traffic flow, ultra-small storage volume, particularly permanent no-falling, energy absorption, collision reduction, convenience in escape and the like is realized by one stroke, and the important social value of disaster resistance, multiple purposes and infinite output is realized. The multifunctional bicycle can be used as a writing desk, a simple bed, an ultra-micro room, a workbench, a rain cover and the like instantly, the whole bicycle is extremely simple and cheap, is easy to manufacture, practical, beneficial and easy to popularize, and can be used for rapidly replacing the most unsafe two-wheeled bicycle with the maximum quantity, so that innovation and progress are completed, and development and progress are promoted by small inventions.

Description

[0001] Technical field: mini cars, tricycles, school supplies, travel supplies, disaster prevention facilities. Background Art

[0002] Human beings can better meet their extremely rich, complex and diverse needs for food, clothing, housing, transportation, production and life through unending innovation and progress. The continuous breakthrough in the performance and function of tools and supplies is the core element of civilization progress. Old-fashioned bicycles and various mini-cars have long been popular in large numbers. Although they are simple, practical, convenient and flexible, two-wheeled bicycles are very easy to tip over, and three-wheeled bicycles occupy too much space and lack folding and multi-use. They also bring serious safety hazards and many storage and use inconveniences to users. There is an urgent need for a sufficiently cheap, easy, scientific and reasonable, efficient and multi-use technical solution to maximize the satisfaction of the most extensive daily travel and survival and development needs of human beings. Summary of the invention

[0003] A new type of three-wheel folding vehicle with two front wheels is designed. The linkage steering and permanent support of the two parallel front wheels are set with a size close to the width of the human body, so that the vehicle can be driven and turned with extreme safety and comfort without falling over. The natural shock-absorbing position of the front two wheels slightly biased to the center direction allows the vehicle to have a smaller wheel diameter, thereby obtaining a larger intermediate support or cargo box space. The upper axle tubes of the two upright wheels are fixed in parallel to the two sides of the parallelogram support or rectangular box that is fixed or folded up and down, front and back, so that the latter can obtain the maximum longitudinal and transverse self-retracting ability. The central vertical rod or the frame-shaped intermediate connecting frame that is always in the middle of the support or folding box is extended backward and downward to form various rear supports to connect and fix the rear wheel, or the rear support is further made into a front deformable triangular support with a torsion spring connection with a collision reduction function, especially a middle double-layer parallel and staggered various folding support rods connected to the pedal support, so that the self-controllable extension and retraction in the front and back directions and the structural anti-collision and shock-absorbing ability can be obtained. Especially when the front box and the front part of the bracket are oriented to the forward telescopic structure, the largest forward retracted dimension of the whole vehicle is obtained, and the three-wheeled vehicle can be retracted to the smallest volume for the most convenient storage and carrying. At this time, the left and right side panels of the front box are all whole panels, and the front and rear sides are two vertically divided half vertical panels. The bottom plate can only be made into two halves of parallel and equidistant movable grilles in the longitudinal and transverse directions, and the top surface is covered with a soft film for convenient cargo loading, and because it is on the bottom surface, it does not affect the beautiful appearance. Of course, it is also possible to further insert the two front wheel axle tubes and the steering handle into the axis to extend the lifting adjustable delay frame and the thin and strong long pole, so that the tent awning can be installed at any time conveniently and quickly, especially the latter is equipped with a variety of movable table boards with folded edges that can be plugged and connected with it, so that the front writing table can be formed at any time to facilitate writing and learning. The rear seat cushion bracket is made into various single-layer and double-layer cushion structures with large extension and retraction arranged on both sides in a horizontal manner, overlapped and interlaced, and the frame tubes on both sides of the lower seat cushion bracket are inserted into each other to stabilize and strengthen each other, and at least two downward fixed or retractable movable support rods are connected to the upper horizontal rod of the wheel frame by horizontal pins, and are equipped with similar movable backrests and support legs, so that they can be synchronously and consistently extended and retracted vertically and horizontally at any time, flipped, opened and closed, and fixed, so that simple workbenches, operating tables, sales tables, display tables, etc. can be instantly formed anytime and anywhere, which can be used for normal driving and carrying of injured and sick people and large items, and can also be used as simple seats. Chairs, single beds and even micro-rooms, the latter of which are equipped with thin and strong poles and tubes connected vertically and horizontally to form a frame cover and a rainproof cloth membrane to form a tent, which can basically guarantee at least one person's simple, practical indoor and outdoor food, accommodation, study, work and life. It has become the most basic, cheap, economical, practical, popular and necessary small universal conventional guarantee facility for human beings in peacetime and war, disaster resistance and prevention, leisurely travel, wild survival, personal freedom, independent thinking, study and research. Its various tangible and intangible, rich and colorful huge beneficial outputs are difficult to describe and are innumerable, and it is worthy and will be promoted and popularized to the greatest extent for the benefit of mankind. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Figure 1This is a schematic top view of a double-axle pin square box structure embodiment. The vertical rounded square box is connected with round tubes to increase strength and reduce collision damage. It is also convenient to store pole tubes and plug in various tent racks and external parts. The inner and outer edges of the surrounding side panels are connected to the cloth membrane skin layer to form various cloth bags for storing books, papers, documents, desktops, etc., and increase or decrease collision protection functions. The middle space can be used to place large goods, tools, instruments, etc. The chassis with parallel double-row pins is more suitable for using square tubes or I-beams to ensure the strength of the frame. The seat cushion bracket is a parallel densely arranged cross-inserted horizontal tube opening and closing structure. The top of each horizontal tube is welded and fixed on the horizontal frame tube on that side, and the tail end is slid together with a side integral sleeve with a common top surface to slide on all the opposite horizontal tubes to open and close horizontally. The seat cushion frame tubes on both sides are fixed to the horizontal support rods on the upper edge of the lower wheel frame cross bar by at least two front and rear support rods with the upper and lower longitudinal cross pins. The seat cushion bracket can be pulled to greatly stretch the inserted horizontal tubes on both sides of the seat cushion bracket to form a single bed workbench at any time as needed. And there can be a method of stretching into a bed or a table, such as a cross-trifold plate, etc. Figure 2 This is a side view of a fully foldable embodiment. Under the action of the torsion spring, the front part of the rearward frame in the figure automatically folds forward in a triangular shape, and the middle part is automatically lifted up in parallel with the folding bracket when the human body leaves the seat and loses pressure, and the upper handle pull line and the diagonal line of the front square box bottom are connected to the rising pedal through the pulley to achieve the maximum contraction of the integrated linkage (picture omitted). Figure 3 The rear view is a half-section of various embodiments of this type of rear frame deflectable mode. The rear frame is fixed to the center of the square box bottom surface with a 3D joint body with a forward transverse axis sleeve, and the upper end is connected to the steering handle and the upper ends of the front wheel axle tubes on both sides with cross-connecting lines at both ends of the arc surface. When turning, the rear frame produces a small amount of synchronous deflection of the bicycle effect, which is safer, more efficient, and more comfortable. The steering handle can be single, double, straight, side, or any other comfortable and arbitrary mode (omitted). Figure 4 For this purpose, the steering linkage is viewed from the side of the parts diagram.

[0005] The serial numbers in the figure are 1 square box or bracket, 2 front wheel axle tube, 3 rear frame, 4 parallel folding bracket, 5 torsion spring, 6 integral sliding sleeve, 7 column pin, 8 pedal, 9 steering handle, 10 pull wire, 11 joint horizontal axis, 12 parallel grille, 13 cloth film cushion, 14 steering linkage rod, 15 movable platform, 16 vertical jack, 17 wheel frame cross bar, 18 pair of horizontal tubes, 19 two side pair of frame tubes, 20 cushion bracket, 21 locking knob, 22 folding and retractable awning, 23 frame-shaped middle connecting frame, 24 cushion, 25 support rod, 26 wheel, 27 pulley, 28 cross connection. DETAILED DESCRIPTION

[0006] Use as many square tubes as possible to make the function, process and structure more reasonable, beneficial, simple and convenient. Various models of varying complexity can be designed according to different needs, equipped with necessary locks and switches.

Claims

1. A safe and practical three-wheel folding multi-purpose vehicle, still mainly composed of conventional wheel frame and driving mode, characterized in that In front of it are two parallel wheels that are linked and steered synchronously. A fixed or movable rectangular bracket or left and right box plates of a square box structure in the middle of the two wheels are used to connect and fix the outer peripheral axle tube above the two front wheels. The central vertical rods on both sides of the square box bracket or the frame-shaped components that open upward extend backward and downward to form a rear wheel bracket that connects and fixes the rear wheel. The rear wheel bracket can be a simple fixed integrated structure, or a variety of folding, telescopic, or even a pull-wire linked deflection structure.

2. The safe and practical front three-wheel folding multi-purpose vehicle as claimed in claim 1, characterized in that The steering handle at the upper end of the front wheel is a vertical axis and a horizontal bending structure, and a long groove is opened in the middle of the upper part to clamp a similar liftable claw, so that the lifting and fixing of the claw can fix the table plate to form a writing table surface to achieve the function of learning, writing and drawing.

3. The safe and practical front three-wheel folding multi-purpose vehicle as claimed in claims 1 and 2, characterized in that The single wheel at the rear is a driving wheel, and the riding seat cushion bracket is a vertically inserted telescopic compression spring tube frame connected horizontally and crossed with the upper horizontal bars of the horizontally placed wheel frames on both sides, and the seat panel frame is a folding panel frame that is matched in the middle on both sides or a single-layer and multi-layer parallel and mutually inserted transversely with multiple claws. Through the porous parallel sleeve plates between the claws, a symmetrical and load-bearing transverse opening and closing structure is formed to form a load-bearing panel surface that can be wide or narrow. It can also be made into an autonomous widening mode with folding plates on both sides together with the seat cushion plate, chair back plate, etc., and open and close vertically and horizontally to form a bed surface for people to rest.

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