CN201907606U - Novel foot controlled bicycle for disabled - Google Patents

Abstract

The utility model relates to a novel foot-controlled bicycle for the disabled, which comprises a vehicle frame with front wheels and rear wheels. The pedal driving mechanism, the mounting bracket used to install the fixed leg steering control mechanism and the pedal, is characterized in that: the pedal driving mechanism has two sets of gear mechanisms and a set of chain transmission mechanisms respectively located on both sides of the vehicle frame, The sector gear in the gear mechanism is fixedly connected with the foot pedal hinged on the mounting bracket, and the complete gear is fixedly connected with the rotating shaft of the driving sprocket of the chain transmission mechanism coaxially. There is a transmission chain to drive the rear wheel. The bicycle uses a gear mechanism to replace the original crank-rocker mechanism drive scheme, which makes the bicycle more portable and labor-saving, and greatly improves its performance. It adopts a height-adjustable seat. This makes the bicycle suitable for people of all heights with disabled hands and intact feet.

Description

A new type of foot-controlled bicycle for the disabled

technical field

The invention relates to a novel foot-controlled bicycle for assisting the disabled.

Background technique

At present, there are various types of wheelchairs for the disabled on the market. There are wheelchairs that can go up and down stairs, hand-cranked mopeds, and multifunctional combined wheelchairs. However, these wheelchairs have a limitation that they can only be used for People with sound hands provide convenience, but people with disabled hands and feet cannot use existing wheelchairs for transportation. Traveling and going out alone, therefore, need a kind of walking-replacing tool that is suitable for the handicapped, both feet intact people to use to solve the difficult problem of their travel.

Patent No. 200720006653.6 is a bicycle for assisting the disabled with foot control. Although the bicycle can be driven flexibly only by relying on the legs, it solves the problem of transportation tools for people with disabled hands and healthy feet, but the crank rocker mechanism is not very ideal as a driving solution. , In addition, because the height of the seat is not adjustable, the bicycle is not suitable for people with hand disabilities and both feet of various heights.

Contents of the invention

The purpose of the present invention is to provide a new type of foot-controlled bicycle for the disabled. The bicycle uses a gear mechanism to replace the original crank-rocker mechanism driving scheme, which makes the bicycle more portable and labor-saving, and greatly improves its performance. The adjustable seat makes the bicycle suitable for people with disabled hands and intact feet of various heights.

The novel foot-controlled disabled bicycle of the present invention includes a vehicle frame with front wheels and rear wheels, a leg-moving steering control mechanism connected to the front wheel support, and a pedal driving mechanism for driving the rear wheels are provided on the vehicle frame. 1. An installation bracket for installing and fixing the leg-moving steering control mechanism and pedals, characterized in that: the pedal drive mechanism has two sets of gear mechanisms and a set of chain transmission mechanisms respectively located on both sides of the vehicle frame, and the gears The sector gear in the mechanism is fixedly connected with the foot pedal hinged on the mounting bracket, and the complete gear is fixedly connected with the rotating shaft of the driving sprocket of the chain transmission mechanism. Chain, the passive chain is installed on the rear wheel rotation shaft, in order to drive the rear wheel.

The above-mentioned seat is a liftable seat driven by a height adjustment mechanism. The height adjustment mechanism is composed of a vertically inverted piston hydraulic cylinder. The piston rod of the hydraulic cylinder is fixedly connected to the mounting bracket. The seat is installed On the upper cylinder of the hydraulic cylinder, the piston of the hydraulic cylinder is provided with a needle valve and a speed damping valve. The needle valve is driven by the seat height adjustment rod to trigger and buffer the lifting of the seat. The piston A split piston is also arranged in the upper side of the cylinder, the upper cavity of the split piston is a high-pressure air chamber, and the lower side of the split piston is a hydraulic oil chamber.

The above-mentioned leg-moving steering control mechanism is a crank-rocker mechanism located on the same horizontal plane. The rocker of the crank-rocker mechanism is hinged to the side part of the mounting bracket and has a rearward extension for convenient driving by legs. The crank of the crank-rocker mechanism is fixedly connected with the handlebar swivel of the front wheel bracket to realize steering when necessary. For the convenience of flexible control, two sets of crank-rocker mechanisms with symmetrical arrangement and shared crank are adopted.

The above-mentioned vehicle frame is provided with a brake pedal, and the brake pedal is connected with a brake member arranged on the rear wheel through a brake line.

Compared with the prior art, the present invention has the following advantages:

1) Since it is not ideal to use the crank rocker mechanism as the driving scheme in a foot-controlled bicycle for the disabled with the patent No. 200720006653.6, this utility model proposes to replace the original driving scheme with a gear mechanism, so that the user can It is more portable and labor-saving, and improves the performance of the disabled vehicle.

2) Aiming at the non-adjustable seat height of a foot-controlled bicycle for the disabled with the patent No. A tall man with disabled hands and intact feet.

3) The overall structure of the new disabled bicycle of the utility model is more compact, it is light and labor-saving to use, and the processing difficulty of most parts is reduced, the production cost can be reduced, and it can better meet the requirements of the market.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the pedal driving mechanism of the present utility model;

Fig. 3 is a schematic diagram of the height-adjustable seat structure of the utility model;

Fig. 4 is a schematic diagram of the leg movement steering control mechanism of the present invention;

Fig. 5 is a schematic diagram of the braking mechanism of the present invention.

In the figure, 1 is the front wheel; 2 is the front wheel bracket; 3 is the leg movement steering control mechanism; 4 is the vertical rod of the mounting bracket; 5 is the sector gear; 6 is the pedal; 7 is the air rod; 8 is the seat; 9 is a passive sprocket; 10 is a rear wheel; 11 is a driving sprocket; 12 is a complete gear; 13 is a brake pedal; 14 is a brake wire rope drive chain; 15 is a seat height adjustment pedal; 16 is a vehicle frame; Rod; 18 is a crank; 19 is a rocker; 20, 21, 22 are bevel gears; 23 is a brake; 24 is a seat; 25 is a high-pressure air cavity; 26 is a separation piston; Speed damping valve; 29 is a needle valve; 31 is a piston rod; 32 is a seat height adjustment rod; 33 is a cylinder barrel.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Please refer to Fig. 1 and Fig. 2, the utility model relates to a new type of foot-controlled bicycle for the disabled, which is improved according to the patent No. 200720006653. The leg-moving steering control mechanism 3 connected to the wheel bracket 2, the pedal driving mechanism for driving the rear wheel 10 and the mounting bracket for installing and fixing the leg-moving steering control mechanism 3 and the pedal 6 are characterized in that: The pedal driving mechanism has two groups of gear mechanisms located on both sides of the vehicle frame and a group of chain transmission mechanisms. The sector gear 5 in the gear mechanism is fixedly connected with the pedal 6 hinged on the mounting bracket, and the complete gear 12 It is fixedly connected with the rotating shaft of the driving sprocket 11 of the chain transmission mechanism, and a transmission chain is arranged between the driving sprocket 11 and the driven sprocket 9, and the driven sprocket 9 is installed on the rear wheel rotating shaft for driving Rear wheel 10, described complete gear 12 inlays an overrunning clutch device, guarantees that when the car slides forward, it can not reversely drive the pedals to swing. When in use, move the pedal 6 with your feet, drive the complete gear 12 to rotate through the sector gear 5 fixedly connected with the pedal 6, so that the driving sprocket 11 rotates, and utilize two sets of gear mechanisms that are staggered and installed on the bracket The alternate work of the two teams of bevel gears 20, 21, 22 guarantees the continuous rotation of the driving sprocket.

As shown in Figure 3, the above-mentioned seat 24 is a liftable seat driven by a height adjustment mechanism. The height adjustment mechanism is composed of a vertically inverted piston hydraulic cylinder. 16 is fixedly connected, the seat 24 is installed on the upper side cylinder 33 of the hydraulic cylinder, the piston of the hydraulic cylinder is provided with a needle valve 29 and a speed damping valve 28, and the needle valve 29 is controlled by the seat height adjustment rod 32 drive, to trigger and cushion the lifting of the seat, a split piston 26 is also arranged in the upper cylinder of the piston, the upper cavity of the split piston 26 is a high-pressure air chamber 25, and the split piston 26 The lower side is the hydraulic oil chamber. During use, when the seat height is too high, the user sits on the seat and moves the seat height adjustment pedal 15 with the foot to drive the seat height adjustment rod 32 to move, so that the needle valve 29 is opened, and the high-pressure air chamber 25 The pressure acts on the hydraulic oil 27, so that the oil pressure of the hydraulic oil 27 rises, the hydraulic oil flows into another oil chamber through the speed damping valve 28, the hydraulic cylinder descends, and the foot is released when the height of the seat is lowered to a suitable position; When the seat height is too low, use the foot to move the seat height adjustment pedal 15 to drive the seat height adjustment rod 32 to move, so that the needle valve 29 is opened. The sum of the pressure of hydraulic oil 27 is equal to the oil pressure of hydraulic oil 30. At this time, the oil pressure of hydraulic oil 30 is greater than that of hydraulic oil 27, and the hydraulic oil flows from the lower chamber to the upper chamber through the speed damper 28 until the upper and lower sides. The oil pressure in the cavity is equal, the hydraulic cylinder rises during this process, and the seat height rises. When the seat height rises to a suitable position, unclamping the pin will lock it immediately, and the hydraulic oil 30 in the lower cavity rises.

As shown in Figure 4, in order to enable people with disabled hands and intact feet to use the utility model, the utility model adopts a leg-moving steering control mechanism 3, and the leg-moving steering control mechanism 3 is a crank rocker located on the same horizontal plane Mechanism, the rocking bar 19 of described crank rocker mechanism is hinged on the side part of mounting bracket and has backward extension, in order to facilitate shank driving, crank 18 is fixedly connected with the handlebar swivel on the front wheel support 2. After adopting above-mentioned leg-moving steering control mechanism 3, as long as just can control the advancing direction of car with shank, in order to make steering more flexible and convenient, two groups of symmetrically arranged, shared crank crank-rocker mechanisms are provided altogether.

As shown in Figure 5, in order to increase the safety of the utility model during use, the above-mentioned vehicle frame is provided with a brake pedal 13, and the brake pedal 13 is connected with the brake pedal 13 and is arranged on the rear wheel shaft through the brake wire rope transmission chain 14. The brake parts 23 are connected to each other, and the brake wire rope transmission chain 14 is tightened by stepping on the brake pedal 13, so that the brake pads embrace the rear wheel shaft to realize braking.

The present invention is not limited to the above-mentioned best implementation mode, and anyone can draw other various forms of new foot-controlled bicycles for the disabled under the enlightenment of the present invention. All equivalent changes and modifications made according to the patent scope of the present invention shall fall within the scope of the present invention.

Claims (5)

1. novel bicycle controlled by foot for assisting handicapped, comprise the vehicle frame that is provided with front-wheel and trailing wheel, described vehicle frame is provided with the moving control mechanism that turns to of the leg that links to each other with front-wheel support, in order to drive the pedal drive mechanism of trailing wheel, in order to install and fix the moving mounting bracket that turns to control mechanism and stretcher of leg, it is characterized in that: described pedal drive mechanism has two groups of gear mechanism and one group of chain drive of being positioned at the vehicle frame both sides respectively, quadrant gear in the described gear mechanism is captiveed joint with the stretcher on being articulated in mounting bracket, complete gear wheel is captiveed joint with the rotating shaft of the drive sprocket of chain drive is coaxial, described drive sprocket and be provided with messenger chain between the movable sprocket, described passive chain is installed on the trailing wheel S. A., in order to drive trailing wheel.

2. novel bicycle controlled by foot for assisting handicapped according to claim 1 is characterized in that: the liftable seat of described seat for being driven by height adjustment mechanism.

3. novel bicycle controlled by foot for assisting handicapped according to claim 2, it is characterized in that: described height adjustment mechanism is made of the piston-type hydraulic cylinder of cross handstand setting, the piston rod of described hydraulic actuating cylinder is captiveed joint with mounting bracket, described chair mounted is on the upside cylinder barrel of hydraulic actuating cylinder, the piston of described hydraulic actuating cylinder is provided with needle-valve and speed dash pot valve, described needle-valve is driven by the height of seat adjust bar, lifting with triggering and buffer armchair, also be provided with one in the upside cylinder barrel of described piston and cut apart piston, the described upside cavity of cutting apart piston is the high pressure air cavity, and the described downside of cutting apart piston is a fluid chamber.

4. novel bicycle controlled by foot for assisting handicapped according to claim 1, it is characterized in that: described leg moves and turns to control mechanism is the quadric linkage that is positioned on the same horizontal surface, the rocking bar of described quadric linkage is articulated in the flanking part of mounting bracket and has the portion of extending back, drive with leg in order to convenient, the crank of described quadric linkage is turned with the handlebar of front-wheel support and is captiveed joint, realize turning in case of necessity, for ease of flexible control, two set of bell cranks rocker mechanisms of symmetric arrangement, shared crank have been taked.

5. novel bicycle controlled by foot for assisting handicapped according to claim 1 and 2 is characterized in that: described vehicle frame is provided with brake pedal, and described brake pedal links to each other with brake member on being arranged at trailing wheel by brake cable.

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