CN219049201U - Automatic lifting folding wheelchair based on pneumatic - Google Patents

Abstract

The utility model discloses a pneumatic-based automatic lifting and folding wheelchair, which includes a seat, a lifting and folding mechanism and a walking mechanism; the lifting and folding mechanism includes a base, a lifting mechanism and a balance supporting mechanism; the lifting mechanism includes a lifting driving cylinder and a lifting Transmission assembly; the lifting transmission assembly includes a first transmission rod and a second transmission rod, the two ends of the first transmission rod are respectively connected to the base and the seat, and the two ends of the second transmission rod are respectively connected to the On the telescopic rod and the first transmission rod of the lifting drive cylinder; the balance support mechanism includes a balance support drive cylinder and a balance transmission assembly; the balance transmission assembly includes a balance support rod and a support slider; two of the balance support rod The ends are respectively rotatably connected with the support slide block and the base; the support slide block is fixedly connected with the telescopic rod of the balanced support drive cylinder. The self-lifting folding wheelchair can take into account the problems of automatic lifting, space saving and structural protection.

Description

A Pneumatic-based Automatic Lifting and Folding Wheelchair

technical field

The utility model relates to a wheelchair, in particular to a pneumatic-based automatic lifting and folding wheelchair.

Background technique

Wheelchairs are mainly used as an important mobile tool for the wounded, sick, and disabled at home for rehabilitation, turnover transportation, medical treatment, and outing activities. Wheelchairs not only meet the needs of the physically disabled and people with reduced mobility, but more importantly, they are convenient for family members to move and take care of the sick. , so that the patient can perform physical exercise and participate in social activities with the help of a wheelchair. At present, most wheelchairs are generally composed of foldable frames, left and right side panels, front and rear wheels, left and right knee pads and pedals, left and right armrests, handle brakes, seats, backrests with medical imaging data bags, urine bag hooks and other parts. The folding space of the above-mentioned wheelchair is limited, the mechanical structure of the wheelchair cannot be well protected, and the problems of automatic lifting, space saving and structural protection cannot be taken into account.

Utility model content

The purpose of the utility model is to overcome the above existing problems and provide a pneumatically-based automatic lifting folding wheelchair, which can take into account the problems of automatic lifting, space saving and structural protection.

The purpose of this utility model is achieved through the following technical solutions:

A pneumatic-based automatic lifting and folding wheelchair, including a seat, a lifting and folding mechanism, and a running mechanism; the seat and the lifting and folding mechanism are arranged on the running mechanism;

The lifting and folding mechanism includes a base, a lifting mechanism and a balance support mechanism; the base is arranged between the running mechanism and the seat; the lifting mechanism includes a lifting drive cylinder and a lifting transmission assembly; the cylinder body of the lifting drive cylinder is fixed It is arranged on the base; the lifting transmission assembly includes a first transmission rod and a second transmission rod, the two ends of the first transmission rod are respectively connected to the base and the seat in rotation, and the two ends of the second transmission rod are respectively Rotationally connected on the telescopic rod of the lifting drive cylinder and the first transmission rod, the connection point of the second transmission rod on the first transmission rod is located between the connection points of the two ends of the first transmission rod; A lower storage slot for storing the first transmission rod and the second transmission rod is provided;

The balance support mechanism includes a balance support driving cylinder and a balance transmission assembly; the cylinder body of the lifting drive cylinder is fixedly arranged at the bottom of the seat; the balance transmission assembly includes a balance support rod and a support slider; the balance support rod The two ends of the two ends are respectively connected with the support slide block and the base in rotation; the support slide block is slidably arranged in the chute at the bottom of the seat; the support slide block is fixedly connected with the telescopic rod of the balance support drive cylinder; There is an upper storage slot at the bottom for storing the balance support rod.

The working principle of the above-mentioned pneumatic-based self-lifting folding wheelchair is as follows:

In the folded state, the seat is folded against the base; if the seat is to be unfolded, the second transmission rod is driven to move by lifting the drive cylinder, so that the second transmission rod is gradually erected; at the same time, the second transmission rod will The power is transmitted to the first transmission rod, and the first transmission rod is driven upwards around the rotation connection at its lower end, thereby lifting the seat. At this time, the first transmission rod, the second transmission rod and the base form a stable triangular structure , so as to be able to firmly provide the main support for the seat. Further, since the posture of the seat is still not straightened at this time, it is necessary to drive the support slider to slide through the balance support drive cylinder. Since the support slider is connected with the balance support rod, as the support slider slides, the balance support rod gradually rotates around the The center of rotation at the bottom flips upwards, thereby straightening the posture of the seat and providing balanced support.

When the seat is to be folded, the support slider is driven to slide through the balance support drive cylinder, and the support function of the balance support rod is cancelled; the second transmission rod is driven to reset by lifting the drive cylinder, so that the first transmission rod gradually revolves around the rotation center at the bottom Swing down to fold the seat down. At this time, the first transmission rod and the second transmission rod are completely stored in the lower storage groove of the base, the balance support rod is stored in the upper storage groove, and the seat is also stacked on the base superior.

In a preferred solution of the present utility model, wherein, the rotation plane of the second transmission rod is parallel to the rotation plane of the first transmission rod. In this way, the first transmission rod and the second transmission rod can be folded together to reduce the occupied space.

A preferred solution of the present utility model, wherein, the lifting mechanism is provided with two groups, and the two groups of lifting mechanisms are arranged side by side;

The balance support rod is located between the two groups of lifting mechanisms.

A preferred solution of the utility model, wherein, when the telescopic rod of the lifting drive cylinder is stretched outward, the seat is being lifted; when the telescopic rod of the lifting drive cylinder is stretched outward, the seat is being folded down.

A preferred solution of the present utility model, wherein, the seat is a foldable structure.

In a preferred solution of the present utility model, the traveling mechanism includes traveling wheels, a traveling frame and a traveling power assembly; the traveling wheels are Mecanum wheels.

A preferred solution of the present invention further includes a pedal structure, the pedal structure includes a pedal and a mounting pole; one end of the mounting pole is fixedly connected to the pedal, and the other end of the mounting pole is fixed on the base.

Compared with the prior art, the utility model has the following beneficial effects:

The self-lifting and folding wheelchair of the utility model can not only lift and fold the seat by setting the lifting mechanism and the balance support mechanism, but also can hide the structure of the lifting mechanism and the balance support mechanism in the folded state, occupying a small space , not only effectively save space resources, but also protect the structure.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the utility model based on the pneumatic self-lifting folding wheelchair in the open state.

Fig. 2-4 is the test question under the different states of the automatic lifting folding wheelchair based on pneumatic of the present utility model, Fig. 2 is the folded state, Fig. 3 is the semi-open state, Fig. 4 is the fully open state.

5-6 are three-dimensional structure diagrams of the seat and the lifting and folding mechanism of the present invention from two different viewing angles.

Detailed ways

In order to make those skilled in the art understand the technical solution of the utility model well, the utility model will be further described below in conjunction with the examples and accompanying drawings, but the implementation of the utility model is not limited thereto.

Referring to Figures 1-5, the pneumatically-based automatic lifting and folding wheelchair of the present embodiment includes a seat 1, a lifting and folding mechanism, and a walking mechanism; the seat 1 and the lifting and folding mechanism are arranged on the walking mechanism; one of the utility models In a preferred solution, the seat 1 is a foldable structure. Wherein, the traveling mechanism includes a traveling wheel 2, a traveling frame and a traveling power assembly; the traveling wheel 2 adopts a Mecanum wheel.

Referring to Figures 1-5, the lifting and folding mechanism includes a base 3, a lifting mechanism and a balance support mechanism; the base 3 is arranged between the walking mechanism and the seat 1; the lifting mechanism includes a lifting drive cylinder 4 and a lifting transmission assembly The cylinder body of the lifting drive cylinder 4 is fixedly arranged on the base 3; the lifting transmission assembly includes a first transmission rod 5 and a second transmission rod 6, and the two ends of the first transmission rod 5 are respectively connected to the base in rotation 3 and the seat 1, the two ends of the second transmission rod 6 are respectively connected to the telescopic rod of the lifting drive cylinder 4 and the first transmission rod 5, and the second transmission rod 6 is on the first transmission rod 5. The connection point is located between the two ends of the first transmission rod 5 ; the base 3 is provided with a lower receiving groove 3 - 1 for accommodating the first transmission rod 5 and the second transmission rod 6 . Wherein, the rotation plane of the second transmission rod 6 is parallel to the rotation plane of the first transmission rod 5 . In this way, the first transmission rod 5 and the second transmission rod 6 can be folded together to reduce the occupied space.

Further, when the telescoping rod of the lifting driving cylinder 4 is stretched outward, the seat 1 is being lifted; when the telescopic rod of the lifting driving cylinder 4 is stretching outward, the seat 1 is being folded down.

Referring to Figures 1-5, the balance support mechanism includes a balance support drive cylinder 7 and a balance transmission assembly; the cylinder body of the lift drive cylinder 4 is fixedly arranged at the bottom of the seat 1; the balance transmission assembly includes a balance support rod 8 and support slider 9; the two ends of the balance support rod 8 are respectively connected with the support slider 9 and the base 3 in rotation; the support slider 9 is slidably arranged in the chute at the bottom of the seat 1; the support slider 9 is fixedly connected with the telescopic rod of the balance support drive cylinder 7; the bottom of the seat 1 is provided with an upper storage groove 1-1 for accommodating the balance support rod 8.

Further, the lifting mechanism is provided with two groups, and the two groups of lifting mechanisms are arranged side by side; the balance support rod 8 is located between the two groups of lifting mechanisms.

Referring to Fig. 1-5, the present embodiment electric self-lifting folding wheelchair also comprises pedal structure, and this pedal structure comprises pedal 10 and installation pole 11; One end of described installation pole 11 is fixedly connected on pedal 10, and this installation pole The other end of 11 is fixed on the base 3.

Referring to Figures 1-5, the working principle of the pneumatically-based automatic lifting folding wheelchair of the present embodiment is as follows:

In the folded state, the seat 1 is folded against the base 3; if the seat 1 is to be unfolded, the second transmission rod 6 is driven to move by lifting the driving cylinder 4, so that the second transmission rod 6 is gradually erected; at the same time , the second transmission rod 6 transmits power to the first transmission rod 5, and drives the first transmission rod 5 to rotate upwards around its lower end to lift the seat 1. At this time, the first transmission rod 5, The second transmission rod 6 and the base 3 form a stable triangular structure, so as to be able to stably provide the support of the main force for the seat 1 . Further, since the posture of the seat 1 has not been set right now, it is necessary to drive the support slider 9 to slide through the balance support drive cylinder 7. Since the support slider 9 is connected with the balance support rod 8, with the sliding of the support slider 9 , the balance support rod 8 gradually turns upwards around the rotation center of the bottom, so as to correct the posture of the seat 1 and provide a balanced support function.

When the seat 1 is to be folded, the support slider 9 is driven to slide by the balance support driving cylinder 7, and the supporting effect of the balance support rod 8 is cancelled; the second transmission rod 6 is reset by lifting the drive cylinder 4, so that the first transmission rod 5 Gradually swing down around the center of rotation at the bottom, thereby folding the seat 1 downwards. At this time, the first transmission rod 5 and the second transmission rod 6 are completely stored in the lower storage groove 3-1 of the base 3, and the balance support rod 8 are stored in the upper storage slot 1-1, and the seat 1 is neatly stacked on the base 3, making it difficult for the external environment to affect the internal structure. Especially when the environment is rainy or relatively humid, the closed protection method can effectively prolong the life of the connecting rod and the rotating joint, making the whole structure more durable and affordable.

The above is a preferred implementation of the utility model, but the implementation of the utility model is not limited by the above content, and any other changes, modifications, substitutions and combinations made without departing from the spirit and principle of the utility model , simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (7)

1. The automatic lifting folding wheelchair based on the pneumatic is characterized by comprising a seat, a lifting folding mechanism and a travelling mechanism; the seat and the lifting folding mechanism are arranged on the travelling mechanism;

the lifting folding mechanism comprises a base, a lifting mechanism and a balance supporting mechanism; the base is arranged between the walking mechanism and the seat; the lifting mechanism comprises a lifting driving cylinder and a lifting transmission assembly; the cylinder body of the lifting driving cylinder is fixedly arranged on the base; the lifting transmission assembly comprises a first transmission rod and a second transmission rod, two ends of the first transmission rod are respectively and rotatably connected to the base and the seat, two ends of the second transmission rod are respectively and rotatably connected to a telescopic rod of the lifting driving cylinder and the first transmission rod, and a connecting point of the second transmission rod on the first transmission rod is positioned between connecting points of two ends of the first transmission rod; the base is provided with a lower storage groove for storing the first transmission rod and the second transmission rod;

the balance supporting mechanism comprises a balance supporting driving cylinder and a balance transmission assembly; the cylinder body of the lifting driving cylinder is fixedly arranged at the bottom of the seat; the balance transmission assembly comprises a balance supporting rod and a supporting sliding block; two ends of the balance support rod are respectively and rotatably connected with the support sliding block and the base; the support sliding block is arranged in a sliding groove at the bottom of the seat in a sliding way; the support sliding block is fixedly connected with the telescopic rod of the balance support driving cylinder; the bottom of the seat is provided with an upper storage groove for storing the balance support rod.

2. The pneumatic-based automatic lifting folding wheelchair of claim 1 wherein the plane of rotation of the second drive link is parallel to the plane of rotation of the first drive link.

3. The automatic pneumatic-based lifting and folding wheelchair according to claim 1, wherein the lifting mechanisms are arranged in two groups, and the two groups of lifting mechanisms are arranged in parallel;

the balance support rod is positioned between the two groups of lifting mechanisms.

4. The pneumatic-based automatic lifting folding wheelchair of claim 1 wherein the seat is lifting when the telescoping rod of the lifting drive cylinder is extended outwardly; when the telescopic rod of the lifting driving cylinder stretches outwards, the seat is folded downwards.

5. The pneumatic-based automatic lifting folding wheelchair of claim 1 wherein the seat is a collapsible structure.

6. The pneumatic-based automatic lifting and folding wheelchair of claim 1 wherein the travel mechanism comprises travel wheels, a travel frame, and a travel power assembly; the walking wheel adopts a Mecanum wheel.

7. The pneumatic-based automatic lifting and folding wheelchair of any of claims 1-6 further comprising a pedal structure comprising a pedal and a mounting strut; one end of the installation supporting rod is fixedly connected to the pedal, and the other end of the installation supporting rod is fixed to the base.

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