CN205126614U - Triangle connection structure of stand -type wheelchair - Google Patents

Abstract

The utility model discloses a triangular connection structure of a standing wheelchair, which comprises a wheelchair body. The wheelchair body includes a vehicle frame on both sides, a folding mechanism and a driving cylinder, and a set of folding mechanisms are respectively installed on the vehicle frames on both sides. , the folding mechanism includes a driving rod, a transmission block and a seat installation rod, the driving rod, the transmission block, and the seat installation rod are connected with the frame on the corresponding side to form a hinged four-bar structure, the transmission block is triangular, and one side of the triangular transmission block The two ends of the drive rod and the seat installation rod are hingedly connected respectively. The backrest is installed on the transmission block. When the piston of the driving cylinder retracts into the cylinder body, the backrest and the installation rod of the seat are perpendicular to each other. When the piston of the driving cylinder is stretched out to the limit, The backrest is in line with the seat mounting bars. The utility model uses the cylinder to drive the hinged four-bar mechanism arranged on the left and right sides of the vehicle frame, and the cylinder is used to drive, and the seat cushion and the backrest are installed on the transmission block and the seat installation rod, so that the electric wheelchair can be positioned between a sitting posture and a standing posture. to convert between.

Description

Triangular connection structure of a standing wheelchair

technical field

The utility model relates to the technical field of daily necessities, in particular to a triangular connection structure of a standing wheelchair.

Background technique

At present, electric wheelchairs, also referred to as electric wheelchairs for short, are tools for special groups of people such as the disabled, the elderly and infirm, those with difficulty walking, those with limb injuries, and patients in medical clinical rehabilitation. The macroscopic structure of electric wheelchair is known, specifically comprises vehicle body and electric mechanism, and vehicle body comprises vehicle frame, wheel (a pair of front wheel and a pair of rear wheel), seat, chair back and armrest, and electric mechanism comprises Electric travel wheel bracket, controller and a pair of electric travel wheels. There is no lack of technical information about electric wheelchairs in the published Chinese patent documents.

Not limited to examples, although each has a corresponding technical effect, there are the following disadvantages: because the frame of the car body is designed as a fixed chair, when the user needs to stand, he still needs help to get out of the wheelchair. For users who are only inconvenient in legs and feet but still have the ability to stand, the complex structure of the wheelchair becomes an obstacle to standing up from the wheelchair. When the patient is walking slowly outdoors (also known as outdoor) in the state of sightseeing, sightseeing, or walking, the patient needs to stand up, so he needs help from others to get out of the wheelchair and stand up. The standing of the person constitutes an obstacle.

Therefore, those skilled in the art are devoting themselves to developing a wheelchair that can help the user to stand, so as to make up for the deficiencies of existing wheelchair products.

Contents of the invention

In view of the above-mentioned defects of the prior art, the technical problem to be solved by this utility model is to provide a triangular connection structure of a standing wheelchair, which uses a cylinder to drive the hinged four-bar mechanism, and installs it on the transmission block of the four-bar mechanism and the seat installation rod. The seat cushion and backrest realize the electric wheelchair cart to help patients convert between sitting and standing positions.

In order to achieve the above purpose, the utility model provides a triangular connection structure of a standing wheelchair, which includes a wheelchair body, the wheelchair body includes a vehicle frame on both sides, a folding mechanism and a driving cylinder, and the two sides A set of folding mechanisms are respectively installed on the vehicle frame, and the folding mechanism includes a driving rod, a transmission block and a seat installation rod, and the driving rod, transmission block, and seat installation rod are connected with the vehicle frame on the corresponding side to form a four-bar hinge structure, the transmission block is triangular, the two ends of one side of the triangular transmission block are hingedly connected with the drive rod and the seat installation rod respectively, the backrest is installed on the transmission block, the cylinder body and the piston of the drive cylinder The ends are hingedly connected with the wheelchair body and the driving rod on both sides respectively. When the piston of the driving cylinder is retracted into the cylinder body, the backrest and the seat mounting rod are perpendicular to each other. When the piston of the driving cylinder is stretched out to the limit, the The backrest is in line with the seat mounting rod.

In a preferred embodiment of the present utility model, a reinforcing rod is installed between the left and right driving rods, and a mounting rod is installed between the frames on both sides, and the cylinder body and the piston end of the driving cylinder are respectively Hingedly connected with reinforcing bar and mounting bar.

In another preferred embodiment of the present utility model, the transmission block is provided with a number of backrest installation holes arranged in a straight line, and the backrest is fixed on the transmission block through detachable connections between bolts or pins and the backrest installation holes. on the block.

Preferably, a seat cushion is mounted on the seat installation rod.

Preferably, the length of the driving rod (31) is 545mm, the length of the transmission block (32) is 65mm, and the length of the seat installation rod (33) is 545mm.

technical effect

The conception, specific structure and technical effects of the present utility model will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present utility model.

The utility model has the advantage that the hinged four-bar mechanism arranged on the left and right sides of the vehicle frame is driven by the cylinder, and the seat cushion and the backrest are installed on the transmission block and the seat installation rod of the four-bar mechanism to realize the motorized movement. Wheelchair carts help patients transition between sitting and standing positions.

Description of drawings

Fig. 1 is the structural representation of wheelchair vehicle of the present utility model;

Fig. 2 is a structural schematic diagram of a wheelchair frame and a folding mechanism of the present invention;

Fig. 3 is a schematic diagram of the unfolded state of the vehicle frame when the cylinder of the wheelchair vehicle of the present invention is extended;

Fig. 4 is a partially enlarged schematic diagram of the transmission block of the present invention.

detailed description

As shown in Figures 1 to 4, a triangular connection structure of a standing wheelchair includes a wheelchair body 1, and the wheelchair body 1 includes a vehicle frame 2 on both sides, a folding mechanism 3 and a driving cylinder 4. A cover of folding mechanism 3 is respectively housed on the vehicle frame 2 on both sides, and described folding mechanism comprises driving rod 31, transmission block 32 and seat installation rod 33, and described driving rod 31, transmission block 32, seat installation rod 33 and The vehicle frame 2 on the corresponding side is connected into a hinged four-bar structure, the transmission block 32 is triangular, and the two ends of one side of the triangular transmission block 32 are hingedly connected with the driving rod 31 and the seat mounting rod 33 respectively, so that The transmission block 32 is equipped with a backrest 321, and the cylinder body and the piston end of the driving cylinder 4 are hingedly connected with the wheelchair body 1 and the driving rod 5 on both sides respectively. When the piston of the driving cylinder 4 retracts into the cylinder body, the The backrest 321 and the seat installation rod 33 are perpendicular to each other, and when the piston of the driving cylinder 4 stretches out to the limit, the backrest 321 and the seat installation rod 33 are in a straight line.

A reinforcing rod 41 is installed between the left and right driving rods 5, and a mounting rod 42 is installed between the vehicle frames on both sides. 42 hinge connections.

The transmission block 32 is provided with a plurality of backrest mounting holes 322 arranged in a straight line, and the backrest 321 is fixed on the transmission block 32 through detachable connections between bolts or pins and the backrest mounting holes 322 .

A seat cushion is housed on the described seat mounting rod 33 .

The length of the driving rod 31 is 545mm, the length of the transmission block 32 is 65mm, and the length of the seat installation rod 33 is 545mm.

In actual use, the user drives the folding mechanism 3 by controlling the extension and retraction of the piston rod of the driving cylinder 4, and uses the characteristics of the hinged four-bar mechanism to rotate the seat cushion to convert the wheelchair from a sitting position to a standing position.

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (4)

1. A triangular connection structure of a standing wheelchair, comprising a wheelchair body (1), characterized in that the wheelchair body (1) includes vehicle frames (2) on both sides, a folding mechanism (3) and Drive the cylinder (4), and a set of folding mechanisms (3) are respectively installed on the vehicle frames (2) on the two sides, and the folding mechanism includes a driving rod (31), a transmission block (32) and a seat mounting rod (33 ), the drive rod (31), the transmission block (32), the seat mounting rod (33) are connected to the vehicle frame (2) on the corresponding side to form a hinged four-bar structure, and the transmission block (32) is triangular in shape, The two ends on one side of the triangular transmission block (32) are hingedly connected with the driving rod (31) and the seat installation rod (33) respectively, the backrest (321) is housed on the described transmission block (32), and the driving cylinder ( 4) The cylinder body and the piston end are hingedly connected with the wheelchair body (1) and the drive rod (5) on both sides respectively. When the piston of the drive cylinder (4) retracts into the cylinder body, the backrest (321) and the The seat installation rods (33) are perpendicular to each other, and when the piston of the driving cylinder (4) stretches out to the limit, the backrest (321) and the seat installation rods (33) are in a straight line. 2. The triangular connection structure of a standing wheelchair as claimed in claim 1, wherein a reinforcement bar (41) is installed between the left and right drive rods (5), and the vehicle frames on both sides A mounting rod (42) is installed between them, and the cylinder body and the piston end of the driving cylinder (4) are hingedly connected with the reinforcing rod (41) and the mounting rod (42) respectively. 3. The triangular connection structure of a standing wheelchair as claimed in claim 1, characterized in that, the transmission block (32) is provided with several backrest mounting holes (322) arranged in a straight line, and the backrest ( 321) is fixed on the transmission block (32) by the detachable connection between the bolt or the pin and the backrest mounting hole (322). 4. The triangular connection structure of a standing wheelchair according to claim 1, characterized in that, a seat cushion is mounted on the seat installation rod (33).