CN214909982U

CN214909982U - Medical backrest chair

Info

Publication number: CN214909982U
Application number: CN202120698237.7U
Authority: CN
Inventors: 蔡海勇; 郭恒宾; 岳亮
Original assignee: NANNING PASSION MEDICAL EQUIPMENT CO Ltd
Current assignee: NANNING PASSION MEDICAL EQUIPMENT CO Ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-11-30
Anticipated expiration: 2031-04-07

Abstract

The utility model belongs to the technical field of medical equipment, specifically a medical back chair, the handrail is fixed on the handrail layer board, and handrail layer board rear end passes through coupling mechanism and links to each other with the backplate frame, still includes balance mechanism, and balance mechanism includes balanced pipe, balancing pole, pipe lug and a frame lug, balanced pipe is rotatable to be installed on the backplate frame with the seat pivot is parallel, the pipe lug sets up at balanced tub outer wall, and a frame lug links to each other with the rear portion of seat grillage, and the balancing pole is articulated with pipe lug and a frame lug respectively through the lug at its upper and lower both ends, and the line of upper and lower articulated shaft is parallel and length equals with the line of balanced pipe to seat main shaft, coupling mechanism and the one end fixed connection of balanced pipe. The armrest of the backrest chair of the utility model can only go up and down along with the swinging of the backrest but can not rotate along with the backrest, thus the hand of the patient can not swing when the backrest is adjusted, and the comfort of the patient is further improved.

Description

Medical backrest chair

Technical Field

The utility model belongs to the technical field of medical equipment, specifically a medical back chair.

Background

When the backrest is adjusted to be in a backward bending angle by the medical backrest chair in the prior art, the armrests pitch along with the backrest, and the hands of some patients are inconvenient to move depending on the armrests, so that the arms of the patients can pitch along with the armrests in the backrest adjusting process, and the patients feel uncomfortable; in addition, the medical back rest chair handrails in the prior art are mostly fixedly installed on the chair, and when a patient needs to move to get on or off the chair, the handrails often cause obstacles.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a medical backrest chair with good use effect and simple structure.

The technical scheme for realizing the aim is that,

a medical backrest chair comprises armrests, a seat plate and a back plate, wherein the armrests are fixed on an armrest supporting plate, the back plate is fixed on a back plate frame, the seat plate is fixed on the seat plate frame, the bottom of the back plate frame is connected with the rear part of the seat plate frame through a seat rotating shaft, the back plate frame is driven to controllably swing back and forth relative to the seat plate frame around the seat rotating shaft, the rear end of the armrest supporting plate is connected with the back plate frame through a connecting mechanism, the medical backrest chair also comprises a balancing mechanism, the balancing mechanism comprises a balancing pipe, a balancing rod, a pipe lug and a frame lug, the balance pipe and the seat rotating shaft are parallel and rotatably arranged on the back plate frame, the pipe lugs are arranged on the outer wall of the balance pipe, the frame lugs are connected with the rear part of the seat plate frame, the balance rod is respectively hinged with the pipe lugs and the frame lugs through lifting lugs at the upper end and the lower end of the balance rod, and the connecting line of the upper hinge shaft and the lower hinge shaft is parallel to the connecting line from the balance pipe to the seat main shaft and has the same length; the connecting mechanism is fixedly connected with one end of the balance pipe.

Furthermore, the connecting mechanism comprises a connecting block, a lifting rod, a fastening wrench and an installation shaft, the connecting block is fixed at one end of the installation shaft, the other end of the installation shaft is fixedly connected with one end of the balance tube, the lifting rod is vertically movably arranged on the connecting block, the upper end of the lifting rod is connected with the bottom of the handrail supporting plate, and the lifting of the lifting rod is restrained by the fastening wrench arranged on the connecting block; the position of the lifting rod in the connecting block is adjusted, the height of the handrail can be adjusted as required, and the comfort of a patient is improved.

Further, be equipped with the locating pin on the installation axle, the balance tube is the hollow tube, and the pipe wall of hollow tube is equipped with the draw-in groove that matches with the locating pin, and installation axle one end alternates in the hollow tube, and the installation axle receives the draw-in groove restraint to realize with hollow tube fixed connection through the locating pin, and the installation axle is connected for dismantling with the balance tube, is convenient for lift the handrail rapidly, prevents that the handrail from hindering to move patient.

Further, a pitching adjusting mechanism is further arranged below the handrail supporting plate, the pitching adjusting mechanism is a gas spring supporting rod, the top end of the lifting rod is hinged to the bottom of the rear end of the handrail supporting plate, one end of the gas spring supporting rod is hinged to the lifting rod, the other end of the gas spring supporting rod is hinged to the bottom of the handrail supporting plate forwards, and a control button of the gas spring supporting rod is arranged at the front end of the handrail supporting plate; the air spring supporting rod can adjust the angle of the handrail relative to the rotation of the lifting rod and fix the handrail rapidly, and the pitching angle of the handrail is adjusted, so that the comfort of a patient can be improved.

Further, the back plate frame swings back and forth relative to the seat plate frame around the seat rotating shaft under the drive of electric power.

Referring to fig. 3, when the angle of the back plate is adjusted, the back plate frame rotates around the seat rotating shaft, the balance rod rotates along with the back plate, because the connecting line of the upper hinge shaft and the lower hinge shaft is parallel to the connecting line of the balance tube to the seat main shaft and has the same length, the tube lug can only translate relative to the frame lug (or the seat plate frame) but not rotate relative to the frame lug (or the seat plate frame), namely, the balance tube cannot rotate relative to the seat plate, the armrest supporting plate connected with the balance tube cannot rotate relative to the seat plate, the armrest can only lift along with the swinging of the backrest but cannot rotate along with the backrest, so that the hand of a patient cannot swing when the backrest is adjusted, and the comfort of the patient is improved.

Gas spring support rods are known in the art and can be stopped at any position during travel by means of some release mechanism (control knob) and a large locking force is applied after stopping.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a working schematic diagram of the embodiment of the present invention.

In the figure, 1, a backboard bracket; 2. a seat plate frame; 2-1, a frame lug; 2-2, a seat rotating shaft; 3. a handrail; 3-1, handrail supporting plate; 3-2. a gas spring support rod; 3-2-1. control button; 4. a connecting mechanism; 4-1, connecting blocks; 4-2, a lifting rod; 4-3, fastening a wrench; 4-4, installing a shaft; 5. a balancing mechanism; 5-1, hollow tube; 5-1-1. tube lugs; 5-2, a balancing pole; l1 is the connecting line of the upper and lower articulated shafts; l2 is the line from the center of the hollow tube to the main axis of the seat.

Detailed Description

The present invention will be described in detail with reference to the following examples.

Referring to fig. 1 to 3, a medical electric back rest chair comprises armrests 3, a seat board and a back board, wherein the armrests 3 are fixed on an armrest supporting board 3-1, the back board is fixed on a back board frame 1, the seat board is fixed on a seat board frame 2, the bottom of the back board frame 1 is connected with the rear part of the seat board frame 2 through a seat rotating shaft 2-2, the back board frame 1 is driven by power to controllably swing back and forth around the seat rotating shaft 2-2 relative to the seat board frame 2, the rear ends of the armrest supporting boards 3-1 are connected with the back board frame 1 through a connecting mechanism 4, and the medical electric back rest chair further comprises a balance mechanism 5,

the balance mechanism 5 comprises a hollow pipe 5-1, a balance rod 5-2, pipe lugs 5-1-1 and frame lugs 2-1, the hollow pipe 5-1 is rotatably mounted on the back plate frame 1 in parallel with the seat rotating shaft 2-2, the pipe lugs 5-1-1 are arranged on the outer wall of the hollow pipe 5-1, the frame lugs 2-1 are connected with the rear part of the seat plate frame 2, the balance rod 5-2 is respectively hinged with the pipe lugs 5-1-1 and the frame lugs 2-1 through lifting lugs at the upper end and the lower end of the balance rod 5-2, a connecting line L1 of an upper hinge shaft and a connecting line L2 of the hollow pipe 5-1 and the seat main shaft is parallel and has the same length;

the connecting mechanism 4 comprises a connecting block 4-1, a lifting rod 4-2, a fastening wrench 4-3 and an installation shaft 4-4, the connecting block 4-1 is fixed at one end of the installation shaft 4-4, the lifting rod 4-2 is vertically arranged and movably installed on the connecting block 4-1, the upper end of the lifting rod 4-2 is connected with the bottom of the handrail supporting plate 3-1, and the lifting of the lifting rod 4-2 is restricted by the fastening wrench 4-3 installed on the connecting block 4-1; the position of the lifting rod 4-2 in the connecting block 4-1 is adjusted, the height of the handrail 3 can be adjusted as required, the comfort of a patient is improved, the other end of the mounting shaft 4-4 is provided with a positioning pin, the wall of the hollow tube 5-1 is provided with a clamping groove matched with the positioning pin, one end of the mounting shaft 4-4 with the positioning pin is inserted in the hollow tube 5-1, the mounting shaft 4-4 is restrained by the clamping groove through the positioning pin to be fixedly connected with the hollow tube 5-1, the mounting shaft 4-4 is detachably connected with the hollow tube 5-1, the handrail 3 can be conveniently and quickly detached, and the handrail 3 is prevented from obstructing the movement of the patient;

in the embodiment, a gas spring support rod 3-2 is further arranged below the handrail support plate 3-1, the top end of the lifting rod 4-2 is hinged with the bottom of the rear end of the handrail support plate 3-1, one end of the gas spring support rod 3-2 is hinged with the lifting rod 4-2, the other end of the gas spring support rod 3-2 is hinged with the bottom of the handrail support plate 3-1 forwards, and a control button 3-2-1 of the gas spring support rod 3-2 is arranged at the front end of the handrail support plate 3-1; the gas spring support rod 3-2 can realize that the armrest 3 can be adjusted in angle and fixed rapidly relative to the rotation of the lifting rod 4-2, and the pitching angle of the armrest 3 can be adjusted according to requirements, so that the comfort of patients can be improved.

Claims

1. A medical backrest chair comprises armrests, a seat board and a back board, wherein the armrests are fixed on an armrest supporting board, the back board is fixed on a back board frame, the seat board is fixed on the seat board frame, the bottom of the back board frame is connected with the rear part of the seat board frame through a seat rotating shaft, the back board frame is driven to controllably swing back and forth relative to the seat board frame around the seat rotating shaft, the rear ends of the armrest supporting boards are connected with the back board frame through a connecting mechanism, it is characterized by also comprising a balance mechanism, wherein the balance mechanism comprises a balance pipe, a balance rod, a pipe lug and a frame lug, the balance pipe and the seat rotating shaft are parallel and rotatably arranged on the back plate frame, the pipe lugs are arranged on the outer wall of the balance pipe, the frame lugs are connected with the rear part of the seat plate frame, the balance rod is respectively hinged with the pipe lugs and the frame lugs through lifting lugs at the upper end and the lower end of the balance rod, and the connecting line of the upper hinge shaft and the lower hinge shaft is parallel to the connecting line from the balance pipe to the seat main shaft and has the same length; the connecting mechanism is fixedly connected with one end of the balance pipe.

2. The medical chair according to claim 1, wherein the connecting mechanism comprises a connecting block, a lifting rod, a fastening wrench and an installation shaft, the connecting block is fixed at one end of the installation shaft, the other end of the installation shaft is fixedly connected with one end of the balance tube, the lifting rod is vertically movably installed on the connecting block, the upper end of the lifting rod is connected with the bottom of the armrest supporting plate, and the lifting of the lifting rod is restricted by the fastening wrench installed on the connecting block.

3. The medical chair according to claim 2, wherein the mounting shaft is provided with a positioning pin, the balance tube is a hollow tube, the wall of the hollow tube is provided with a slot matched with the positioning pin, one end of the mounting shaft is inserted into the hollow tube, and the mounting shaft is restrained by the slot through the positioning pin to be fixedly connected with the hollow tube.

4. The medical back-rest chair according to claim 2, wherein a pitch adjusting mechanism is further arranged below the armrest support plate, the pitch adjusting mechanism is a gas spring support rod, the top end of the lifting rod is hinged with the bottom of the rear end of the armrest support plate, one end of the gas spring support rod is hinged with the lifting rod, the other end of the gas spring support rod is hinged with the bottom of the armrest support plate forwards, and a control button of the gas spring support rod is arranged at the front end of the armrest support plate.

5. The chair as claimed in claim 1, wherein the back frame is electrically driven to swing back and forth about the seat pivot relative to the seat frame.