CN215779279U

CN215779279U - Backrest lifting adjusting device for wheelchair

Info

Publication number: CN215779279U
Application number: CN202122172077.5U
Authority: CN
Inventors: 陈建国; 陈新; 侯晓波
Original assignee: Jerry Medical Instrument Shanghai Co ltd
Current assignee: Jerry Medical Instrument Shanghai Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-02-11
Anticipated expiration: 2031-09-09

Abstract

The utility model discloses a backrest lifting adjusting device for a wheelchair, which comprises a wheelchair body and two supporting stand columns arranged on two sides of a backrest plate on the wheelchair body, wherein the two supporting stand columns are symmetrically distributed along two sides of the backrest plate, and lifting sliding grooves are formed in the two supporting stand columns far away from the backrest plate. The lifting limiting mechanism is connected to the bottom end of the lifting rod in a rotating mode, the position of the backrest after adjustment can be limited by the lifting limiting mechanism in the using process, the backrest is prevented from moving, and the backrest can be adjusted in a lifting mode by a patient in a sitting posture state under the condition that other people do not need help.

Description

Backrest lifting adjusting device for wheelchair

Technical Field

The utility model relates to the technical field of wheelchairs, in particular to a backrest lifting adjusting device for a wheelchair.

Background

Wheelchairs are chairs equipped with wheels to help replace walking and are classified into electric and manual folding wheelchairs. The wheelchair is an important mobile tool for home rehabilitation, turnover transportation, treatment and outgoing activities of wounded persons, patients and disabled persons, not only meets the requirements of physically disabled persons and persons with mobility disabilities for riding instead of walk, but also is more important to facilitate the family members to move and take care of the patients, so that the patients can do physical exercises and participate in social activities by means of the wheelchair.

And current wheelchair in the patient use, often meets the condition that different patients need to adjust the back according to the position of sitting requirement, and ordinary wheelchair needs other personalities of non-patient's help just can accomplish when adjusting the back lift, can't independently accomplish the lift adjustment of back under being in the position of sitting state, consequently need improve it.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a backrest lifting adjusting device for a wheelchair, and aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a backrest lifting adjusting device for a wheelchair comprises a wheelchair body and two supporting stand columns arranged on two sides of a backrest plate on the wheelchair body, wherein the two supporting stand columns are symmetrically distributed along two sides of the backrest plate, lifting sliding grooves are formed in the two supporting stand columns far away from the backrest plate side, lifting rods are connected in the lifting sliding grooves in a sliding mode, a lifting backrest is fixedly connected between the two lifting rods, a cart handle is fixedly installed at the top ends of the lifting rods, and a lifting limiting mechanism is rotatably connected to the bottom ends of the lifting rods;

the lifting limiting mechanism comprises a rotating rod rotatably connected with the bottom section of the lifting rod, one end of the rotating rod is fixedly connected with a limiting plate, the rotating rod is respectively sleeved with a pulling plate and a spring, one end of the spring is fixedly connected with the limiting plate, the other end of the spring is fixedly connected with the pulling plate, the pulling plate is arc-shaped, and the inward concave direction of the arc is arranged towards the limiting plate side;

and a plurality of bayonets matched with the rotary rods are respectively arranged on the support upright posts in the height direction.

Preferably, the pull plate is provided with a contact flat opening close to the side of the support upright column.

Preferably, the height of the lifting rod is greater than that of the supporting upright post.

Preferably, the number of the bayonets is at least two.

Preferably, the opening direction of the bayonet on the supporting upright post is positioned at the side close to the armrest of the wheelchair body.

Preferably, a head cushion is adhered to the lifting backrest.

Preferably, the diameter of the rotary rod is smaller than the minimum width of the lifting chute.

The utility model has the beneficial effects that:

1. the lifting limiting mechanism is connected to the bottom end of the lifting rod in a rotating mode, the position of the backrest after adjustment can be limited by the lifting limiting mechanism in the using process, the backrest is prevented from moving, and the backrest can be adjusted in a lifting mode by a patient in a sitting posture state under the condition that other people do not need help.

2. The shape through setting up the arm-tie is arc, and the circular arc indent direction sets up towards spacing board side, can make things convenient for the elasticity that the patient's hand overcome the spring in the use, with arm-tie and support post surface separation, promotes the in-service use effect, and easy operation has the use of position of sitting state patient simultaneously.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

FIG. 2 is an enlarged view of the structure of FIG. 1 at A according to the present invention.

Fig. 3 is a cross-sectional view of the support column structure of the present invention.

The attached drawings are marked as follows: 1 wheelchair body, 2 back boards, 3 supporting columns, 4 lifting sliding grooves, 5 lifting rods, 6 head cushions, 7 lifting backs, 8 cart handles, 9 lifting limiting mechanisms, 901 rotating rods, 902 limiting plates, 903 pull boards, 904 springs and 10 bayonets.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

The terms "upper", "lower", "left", "right", "front", "back", "inner", "outer", and the like, refer to orientations or positional relationships based on those shown in the drawings, or those that are conventionally placed during use of the products of the present invention, and are used for convenience in describing and simplifying the utility model, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the utility model.

Referring to fig. 1-3, a backrest lifting adjusting device for a wheelchair comprises a wheelchair body 1 and two support columns 3 arranged on two sides of a backrest plate 2 on the wheelchair body 1, wherein the number of the support columns 3 is two, the support columns are symmetrically distributed along two sides of the backrest plate 2, lifting chutes 4 are formed in the two support columns 3 far away from the backrest plate 2, lifting rods 5 are connected in the lifting chutes 4 in a sliding manner, a lifting backrest 7 is fixedly connected between the two lifting rods 5, the lifting backrest 7 can be driven to lift up and down through the up-and-down movement of the lifting rods 5, a cart handle 8 is fixedly arranged at the top ends of the lifting rods 5, so that the height of the pushing handle 8 has a lifting adjusting function, the adaptability and the practicability of the wheelchair are improved, and a lifting limiting mechanism 9 is rotatably connected at the bottom end;

the lifting limiting mechanism 9 comprises a rotating rod 901 rotatably connected with the bottom section of the lifting rod 5, one end of the rotating rod 901 is fixedly connected with a limiting plate 902, the rotating rod 901 is respectively sleeved with a pulling plate 903 and a spring 904, the spring 904 is positioned between the pulling plate 903 and the limiting plate 902, one end of the spring 904 is fixedly connected with the limiting plate 902, the other end of the spring 904 is fixedly connected with the pulling plate 903, the pulling plate 903 is in an arc shape, the arc is concave towards the limiting plate 902 side, when a patient is in a sitting posture state to adjust the backrest in the using process, the hand of the patient can conveniently overcome the elastic force of the spring 904, the pulling plate 903 is separated from the surface of the support upright 3, and the actual using effect is improved;

extend the direction of height and set up a plurality of bayonet socket 10 with rotary rod 901 complex respectively on the support post 3, carry out spacing to the high position of lifter 5 in lift spout 4 through the cooperation of rotary rod 901 and bayonet socket 10, play limiting displacement.

Wherein the arm-tie 903 is close to the 3 sides of support post and is equipped with the flat mouthful of contact, promote the frictional force between arm-tie 903 and the support post 3, promote spacing effect, lifter 5 highly be greater than the height of support post 3, the quantity of bayonet socket 10 is two at least, it is spacing to make things convenient for it to carry on according to height-adjusting, bayonet socket 10 is seted up the direction and is located and is close to 1 handrail side of wheelchair body on the support post 3, the patient that conveniently is in the position of sitting state operates, it has head cushion 6 to bond on the lift back 7, promote the travelling comfort of wheelchair, the diameter of rotary rod 901 is less than the minimum width of lift spout 4, make things convenient for rotary rod 901 when not coordinating with bayonet socket 10, can follow lifter 5 and remove in lift spout 4.

When a patient in a sitting posture needs to adjust the backrest, firstly, the pulling plate 903 is pulled to move towards the limiting plate 902 side by overcoming the elastic force of the spring 904, then, while the pulling state is kept, the rotating rod 901 is rotated to enable the rotating rod 901 to be separated from the bayonet 10, then, the rotating rod 901 is pulled upwards to drive the lifting rod 5 and the lifting backrest 7 to integrally move upwards, so that the height adjustment of the backrest is realized, after the preset height adjustment is reached, the rotating rod 901 is matched with the bayonet 10 with the corresponding height, the rotating rod 901 is prevented from moving by the thrust applied to the pulling plate 903 by the spring 904, and further, the position limitation of the lifting rod 5 is realized.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "provided", "connected" and "connected" are to be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features related to the different embodiments of the present invention described above may be combined with each other as long as they do not conflict with each other.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a back lift adjustment device for wheelchair, includes that wheelchair body (1) and wheelchair body (1) go up support post (3) of back board (2) both sides, the quantity of support post (3) is two, and prolongs back board (2) bilateral symmetry and distribute its characterized in that: lifting chutes (4) are formed in the sides, far away from the backrest plate (2), of the two supporting upright columns (3), lifting rods (5) are connected in the lifting chutes (4) in a sliding mode, a lifting backrest (7) is fixedly connected between the two lifting rods (5), a trolley handle (8) is fixedly installed at the top ends of the lifting rods (5), and a lifting limiting mechanism (9) is rotatably connected at the bottom ends of the lifting rods;

the lifting limiting mechanism (9) comprises a rotating rod (901) rotatably connected with the bottom section of the lifting rod (5), one end of the rotating rod (901) is fixedly connected with a limiting plate (902), the rotating rod (901) is respectively sleeved with a pulling plate (903) and a spring (904), one end of the spring (904) is fixedly connected with the limiting plate (902), the other end of the spring (904) is fixedly connected with the pulling plate (903), the pulling plate (903) is arc-shaped, and the concave direction of the arc is arranged towards the side of the limiting plate (902);

the supporting upright posts (3) are respectively provided with a plurality of bayonets (10) matched with the rotating rods (901) along the height direction.

2. The back lift adjustment device for a wheelchair of claim 1, wherein: and a contact flat opening is formed in the side, close to the supporting upright post (3), of the pulling plate (903).

3. The back lift adjustment device for a wheelchair of claim 1, wherein: the height of the lifting rod (5) is greater than that of the supporting upright post (3).

4. The back lift adjustment device for a wheelchair of claim 1, wherein: the number of the bayonets (10) is at least two.

5. The back lift adjustment device for a wheelchair of claim 1, wherein: the opening direction of the bayonet (10) on the supporting upright post (3) is positioned at the side close to the armrest of the wheelchair body (1).

6. The back lift adjustment device for a wheelchair of claim 1, wherein: the lifting backrest (7) is adhered with a head cushion (6).

7. The back lift adjustment device for a wheelchair of claim 1, wherein: the diameter of the rotating rod (901) is smaller than the minimum width of the lifting chute (4).