CN204600938U - One is applied to wheelchair Collapsible seat mechanism - Google Patents

Abstract

The utility model discloses a foldable seat mechanism applied to a wheelchair, which comprises a chassis support and a seat seat. The chassis support comprises two parallel first support rods, and the two first support rods are connected by four connecting rods. Each first support rod is hinged with one end of two connecting rods, and the other ends of the four connecting rods are hinged with each other through a first hinge pin, and the two ends of a pull rod are connected with two first hinge pins at the same time. The shafts are hinged, and one of the first hinge pins is also connected to a push-pull handle; the seat base includes two parallel second support rods and two seat plates, and one side of each seat plate is hinged on a On the second support rods, the other sides of the two seat boards are hinged to each other through the second hinge pin; the two second support rods are respectively connected on the top of the two first support rods; A handle is also hinged; the utility model is easy to fold, is beneficial to the packaging and transportation of the wheelchair, and has a firm structure when in use.

Description

A foldable seat mechanism applied to a wheelchair

technical field

The utility model relates to the technical field of wheelchair manufacturing, in particular to a foldable seat mechanism applied to wheelchairs.

Background technique

The wheelchair is a means of transportation for the disabled and the elderly and infirm. The traditional wheelchair has a relatively simple structure, cannot be folded, takes up a lot of space, and is not convenient for transportation and packaging.

In order to solve the problem that the wheelchair takes up space and is inconvenient to transport, a part of the existing wheelchair is designed as a foldable structure, such as a patent No. ZL 201420369688. 6 published on December 3, 2014, named "a new type of foldable wheelchair" , which includes a seat cushion, the seat cushion is connected to the backrest, one side of the backrest is provided with a folding rod, the other side of the backrest is provided with an armrest, the middle of the folding rod is provided with a rotating shaft, and both sides of the seat cushion are provided with runners, The outer ring of the runner is provided with a hand ring, and one side of the hand ring is provided with a brake switch which is convenient for controlling the stroke. The wheelchair is foldable, which improves the flexibility of the wheelchair and reduces the space occupied by the wheelchair during transportation, which facilitates transportation. However, the entire support structure is relatively thin and the reliability of use is low.

Utility model content

The technical problem to be solved by the utility model is to provide a foldable seat mechanism applied to a wheelchair, which is convenient to fold, is beneficial to the packaging and transportation of the wheelchair, and has a firm structure when used.

In order to achieve the above purpose, the technical solution of the utility model is: a foldable seat mechanism applied to a wheelchair, including a chassis bracket and a seat, the chassis bracket includes two parallel first support rods, two first support rods The rods are connected through four connecting rods, each first support rod is hinged with one end of two connecting rods, the other ends of the four connecting rods are hinged with each other through a first hinge pin, and the two ends of a pull rod are hinged. The ends are hinged to two first hinge pins at the same time, and one of the first hinge pins is also connected to a push-pull handle;

Described seat comprises two parallel second support bars and two seat plates, one side of each seat plate is hinged on a second support bar, and the other side of two seat plates passes through the second The hinge pins are hinged to each other; the two second support rods are respectively connected to the tops of the two first support rods.

As a further improvement, a handle is also hinged on the second hinge pin, and the handle can be embedded in one of the seat plates when turned over. It can be folded more conveniently through the handle.

As a further improvement, each of the first support rods is equipped with a first gas spring, one end of the first gas spring is hinged to the front of the first support rod, and the other end of the first gas spring is hinged to the lower end of an arc-shaped plate , the upper part of the arc-shaped plate stretches out of the first support rod and is fixedly connected with the rear end of one of the second support rods; each of the first support rods is provided with a support protrusion on the rear upper part, and the support protrusion is connected to the rear end of the first support rod. The rear and lower parts of one of the second support rods are hinged. The inclination angle of the seat can be adjusted by adjusting the length of the first gas spring.

Further improvement, the upper end of each arc-shaped plate is hinged with the lower end of a backrest support column, and the upper part of each arc-shaped plate also extends a support portion backwards, and the second gas spring is housed on the backrest support column. The upper end of the spring is hinged on the upper part of the backrest support column, the lower end of the second gas spring is hinged with one end of a connecting piece, and the other end of the connecting piece is hinged on the support portion. The inclination angle of the entire backrest can be adjusted by adjusting the length of the second gas spring.

As a further improvement, a connecting portion extends forward from the upper part of each arc-shaped plate, and the connecting portion is fixedly connected to the second support rod. This makes the connection between the arc-shaped plate and the second support rod more reliable.

As a further improvement, each curved plate is also provided with a scale. It is convenient and accurate to adjust the inclination angle of the seat.

As a further improvement, the rear end of each of the first support rods is fixedly connected to a support, and a positionable rotating shaft is pivotally connected to the support, the rotating shaft is arranged obliquely, and the lower end of the rotating shaft is fixedly connected to an anti-tipping leg. The outriggers prevent the wheelchair from tipping over backwards.

The utility model controls the interconnected connecting rods to cross the dead point through the push-pull handle, and the two seat plates of the seat seat are hinged to each other through the second hinge pin, so that the two first support rods and/or the two second support rods When the rods apply a force close to each other, the chassis bracket and the seat seat can be conveniently formed into a folded state, and the operation is relatively simple, which is beneficial to the packaging and transportation of the wheelchair.

On the other hand, the structure of the chassis bracket hinged by two first support rods, four connecting rods, two first hinge pins and one pull rod is firm, which improves the reliability and safety of the wheelchair.

Description of drawings

Fig. 1 is a perspective view of the utility model;

Fig. 2 is a three-dimensional exploded view of the utility model;

Fig. 3 is a perspective view of the utility model in a folded state.

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 2, a foldable seat mechanism applied to a wheelchair includes a chassis support 1 and a seat 2, and the chassis support 1 includes two parallel first support rods 11, two first support rods 11 are connected by four connecting rods 12, each first support rod 11 is hinged with one end of two connecting rods 12, and the other ends of the four connecting rods 12 are hinged by a first hinge pin 13, Two ends of a pull rod 14 are hinged to two first hinge pins 13 at the same time, and one of the first hinge pins 13 is also connected to a push-pull handle 15 .

Described seat base 2 comprises two parallel second support rods 21 and two seat plates 22, one side of each seat plate 22 is hinged on a second support rod 21, two seat plates 22 The other side is hinged to each other through the second hinge pin 23;

A handle 24 is also hinged on the second hinge pin shaft 23 , and the handle 24 can be embedded in one of the seat boards 22 when turned over.

Two second support rods 21 are respectively connected above the two first support rods 11. The specific connection method is: a first gas spring 3 is housed in each of the first support rods 11, and one end of the first gas spring 3 Hinged to the front of the first support rod 11, the other end of the first gas spring 3 is hinged to the lower end of an arc-shaped plate 4, and the top of the arc-shaped plate 4 stretches out of the first support rod 11 to connect with the first support rod 11. The rear ends of the two support rods 21 are fixedly connected; each of the first support rods 11 is provided with a support protrusion 111 at the rear upper part, and the support protrusion 111 is hinged with a rear lower part of the second support rod 21; This connection structure can adjust the inclination angle of the seat 2 by adjusting the length of the first gas spring 3;

A connecting portion 41 extends forward from the upper portion of each arc-shaped plate 4 , and the connecting portion 41 is fixedly connected to the second support rod 21 .

The upper end of each arc-shaped plate 4 is hinged with the lower end of a backrest support column 5, and the top of each arc-shaped plate 4 also extends a support portion 42 backwards. The second gas spring 6 is housed on the backrest support column 5. The upper ends of the two gas springs 6 are hinged on the top of the back support column 5, the lower end of the second gas spring 6 is hinged with one end of a connector 7, and the other end of the connector 7 is hinged on the support portion 42; two backrests The support columns 5 are connected by soft cushions 8; this structure can adjust the inclination angle of the entire backrest through the second gas spring 6.

Each arc-shaped plate 4 is also provided with a scale 43 .

The rear end of each first support rod 11 is fixedly connected to a support 112, and a positionable rotating shaft 9 is pivotally connected to the support 112. The rotating shaft 9 is arranged obliquely. Outriggers10.

As shown in Fig. 3, when folding, the push-pull handle 15 is pulled backwards, so that the four connecting rods 12 hinged to each other are separated from the connection dead point, and then the handle 24 is lifted upwards, and then the two first support rods 11 and/or The two second support rods 21 exert a force close to each other, and at the same time, each leg 10 is rotated 180 degrees along the rotating shaft 9 to form a folded state as shown in FIG. 3 , which is convenient for transportation and packaging.

The above is only a preferred embodiment of the utility model, and equivalent changes made by those skilled in the art according to the claims all fall within the protection scope of the present case.

Claims (7)

1. A foldable seat mechanism applied to a wheelchair, comprising a chassis bracket and a seat, characterized in that: the chassis bracket includes two parallel first support rods, and the two first support rods are connected by four connecting rods. connection, each first support rod is hinged to one end of two connecting rods, the other ends of the four connecting rods are hinged to each other through a first hinge pin, and both ends of a tie rod are connected to two first connecting rods at the same time. The hinge pins are hinged, and one of the first hinge pins is also connected with a push-pull handle; Described seat comprises two parallel second support bars and two seat plates, one side of each seat plate is hinged on a second support bar, and the other side of two seat plates passes through the second The hinge pins are hinged to each other; the two second support rods are respectively connected to the tops of the two first support rods. 2. A foldable seat mechanism applied to wheelchairs according to claim 1, characterized in that: a handle is also hinged on the second hinge pin, and the handle can be embedded in one of the seat plates when turned over superior. 3. A foldable seat mechanism for wheelchairs according to claim 1, characterized in that: each of the first support rods is equipped with a first gas spring, and one end of the first gas spring is hinged on the first support The front part of the rod, the other end of the first gas spring is hinged with the lower end of an arc-shaped plate, and the upper part of the arc-shaped plate stretches out of the first support rod and is fixedly connected with the rear end of a second support rod; A support protrusion is provided on the rear upper part of the first support rod, and the support protrusion is hinged to the rear lower part of the second support rod. 4. A foldable seat mechanism applied to wheelchairs according to claim 3, characterized in that: the upper end of each arc-shaped plate is hinged to the lower end of a backrest support column, and the upper part of each arc-shaped plate is also A supporting part is extended backward, and a second gas spring is installed on the back support column, the upper end of the second gas spring is hinged on the upper part of the back support column, the lower end of the second gas spring is hinged with one end of a connecting piece, and the other end of the connecting piece is hinged. One end is hinged on the support part. 5. A foldable seat mechanism applied to wheelchairs according to claim 3, characterized in that: the upper part of each arc-shaped plate also extends forward a connecting part, and the connecting part is fixedly connected to the second support rod . 6 . The foldable seat mechanism applied to a wheelchair according to claim 3 , wherein a scale is also provided on each arc-shaped plate. 6 . 7. A foldable seat mechanism applied to wheelchairs according to any one of claims 1 to 6, characterized in that: the rear end of each of the first support rods is fixedly connected to a support, and the support is pivoted A positionable rotating shaft is connected, and the rotating shaft is arranged obliquely, and the lower end of the rotating shaft is fixedly connected with an anti-tipping leg.