CN111631548B

CN111631548B - Lumbar support chair

Info

Publication number: CN111631548B
Application number: CN202010344898.XA
Authority: CN
Inventors: 乔路翔
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2023-04-25
Anticipated expiration: 2040-04-27
Also published as: CN111631548A

Abstract

The invention relates to a lumbar support chair, which comprises a bottom bracket, a chair seat, a chair back, a structure for supporting the lumbar part by utilizing a lever principle and a function for massaging the back of a user, wherein the chair seat is provided with a seat body; compared with other lumbar support chairs, the chair does not need extra manpower or electric drive, can utilize the pressure of a person to drive the lever and the soft liquid bag to support the waist well, and is convenient to operate; the structure is simple, and the manufacturing, maintenance and use costs are low; in addition, the lever principle is utilized, the support can be adjusted according to the weight of a person, and the larger the weight is, the larger the support force and the support amplitude are, and the better the support effect is; in addition, the ultrasonic wave generator is used for sending out ultrasonic waves to act on the liquid bag, so that the back can be uniformly massaged, and compared with the common massage, the massage device is comfortable in feeling and better in effect.

Description

Lumbar support chair

Technical Field

The invention relates to the field of furniture seats, in particular to a chair capable of realizing lumbar support.

Background

The chair is daily furniture, but the chair back of the traditional chair is fixed, so that the waist is trapped when the chair back is kept in a sitting state for a long time, and diseases such as lumbar disc herniation or humpback can be caused, and people often need to support the waist in order to make the chair sit more comfortable.

There are two ways to use at present: one is to use an extra waist support which is directly placed on a chair, and the waist support needs to be purchased and placed additionally, and has limited supporting effect; another is to provide a lumbar support structure on a chair, and after sitting down, a person supports the lumbar by manually or electrically driving the support structure, such as an adjusting device for lumbar support disclosed in chinese patent publication CN103182974B, which is generally very complex in structure, and has high manufacturing, use and maintenance costs, which cannot be generally accepted by consumers.

Disclosure of Invention

The invention aims to provide a lumbar support chair which can effectively support the lumbar of a user through a simpler structure and has lower manufacturing and using costs.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the utility model provides a lumbar support chair, includes bottom support, seat support, back of the chair, and the support includes a pair of preceding, back extension board and a pair of left and right extension board, and preceding, back extension board and left and right extension board form quadrilateral frame, and seat support, back of the chair are installed on the support, its characterized in that: two supporting plates are arranged in parallel on the inner side of the quadrangular frame, a group of guide holes are formed in each supporting plate, a left guide column and a right guide column are arranged below the chair seat, the guide columns correspond to the guide holes, a reset spring is arranged on at least one guide column, and the reset spring is supported between the supporting plate and the chair seat; a lever is arranged below each side supporting plate, each group of guide posts is connected with one lever, each guide post is connected with the lever through a hinge point, the lever comprises a cross rod and a vertical rod, the rear end of the cross rod is connected with the lower end of the vertical rod, a fulcrum is arranged on the cross rod, and the fulcrum is arranged behind the hinge point of one group of guide posts and the lever and in front of the joint of the vertical rod and the cross rod; the back comprises a back surface and a back plate, wherein the back surface is made of soft materials, the back surface covers the front surface of the back plate, a back inner cavity is formed between the back surface and the back plate, and the back inner cavity is provided with: the upper baffle is arranged above the tray and the soft liquid bag, and the upper baffle is fixedly connected with the chair back plate.

Furthermore, a vibration generator is arranged in the inner cavity of the chair back, and the vibration generator acts on the liquid bag.

Further, the vibration generator is an ultrasonic generator.

Further, the liquid in the liquid bag is water or baking soda solution.

Furthermore, a vibration generator is also arranged in the inner cavity of the chair back.

Further, the upper baffle plate is connected with the chair back surface through a first flexible belt, and the tray is connected with the chair back surface through a second flexible belt.

Further, the left and right groups of guide posts respectively comprise a front guide post and a rear guide post, the length of the front guide post is larger than that of the rear guide post, and the rear part of the chair seat is pivotally connected with the bottom bracket through a rotating shaft.

Further, the fulcrum include base, universal joint, staple bolt, the base is fixed on the bottom support, the staple bolt passes through the universal joint to be installed on the base, the horizontal pole setting of lever is in the staple bolt.

Specifically, the inner cavity of the chair back is internally provided with flocculent filler.

The beneficial effects of the invention are mainly as follows:

1. the waist support chair can well support the waist by utilizing the pressure driven lever and the soft liquid bag which are used for sitting down by a person, is convenient to operate and does not need additional manpower or electric driving;

2. the lever principle is utilized, the support can be adjusted according to the weight of a person, and the larger the weight is, the larger the support force and the support amplitude are, and the better the support effect is;

3. the ultrasonic generator is used for sending out ultrasonic waves to act on the liquid bag, so that the back can be uniformly massaged, and compared with the common massage, the massage device is comfortable in feeling and better in effect;

4. compared with other chairs with lumbar support function, the chair has the advantages of few additional parts, simple structure and low manufacturing, maintenance and use costs.

Drawings

FIG. 1 is a schematic view of the overall structure of a lumbar support chair according to the present invention;

FIG. 2 is a top view of a bracket structure of the present invention;

FIG. 3 is a schematic view of the lumbar support chair of the present invention in use;

fig. 4 is a schematic view of a fulcrum structure in the present invention.

Detailed Description

The present invention relates to a lumbar support chair, which is further described below with reference to the drawings of the present invention, wherein the terms "front", "rear", "left", "right", "upper" and "lower" in terms of directions in the present invention are determined by the normal knowledge of those skilled in the art, with reference to the normal state of a person sitting on the chair, with the visual directions being the front and the opposite directions being the rear, with the left side of the person being the "left" and the right side being the "right", "upper" and "lower" being determined by the spatial positions in which the chair is normally placed.

Figure 1 is an overall lumbar support chair construction according to the present invention wherein a portion of the internal structure is depicted in phantom perspective. The invention relates to a lumbar support chair, which comprises a bottom bracket 1, a chair seat 2 and a chair back 3, wherein the bracket comprises a pair of front and rear support plates 11 and a pair of left and right support plates 12, and the front and rear support plates 11 and the left and right support plates 12 form a quadrilateral frame as shown in figure 2; the chair seat 2 and the chair back 3 are both arranged on the bracket, and the mounting modes can be screw, splicing, cementing and the like; four legs can be used to support the lower part of the bracket, as shown in figure 1, and a common cylinder rotary chair structure can be used for supporting.

As shown in fig. 2, two supporting plates 14 are arranged in parallel on the inner side of the quadrangular frame, a group of guide holes 15 are arranged on each supporting plate 14, a left group of guide posts 21 and a right group of guide posts 23 are arranged below the seat 2, the

guide posts

21 and 23 correspond to the guide holes 15 one by one, and the number of the guide posts and the guide holes on each side of the left side and the right side can be determined according to actual needs, and is generally preferably 2 or 3; at least one of the guide posts 22/23 is provided with a return spring 21, which return spring 21 is supported between the carrier 14 and the seat 2 for returning the seat to its original position after the person leaves the seat.

In the more specific structure shown in fig. 1, a lever 41 is arranged below each side supporting plate 14, the whole lever is L-shaped, each group of

guide posts

21 and 23 is connected with one lever 41, each

guide post

21 and 23 is connected with the lever 41 through a hinging point 22 and a hinging point 24, the lever 41 comprises a cross rod 411 and a vertical rod 412, the rear end of the cross rod 411 is connected with the lower end of the vertical rod, a supporting point 42 is arranged on the cross rod 411, and the position of the supporting point is adjustable according to the actually required supporting amplitude after the hinging point of one group of

guide posts

21 and 23 and the lever 41 and before the connecting point of the vertical rod 411 and the cross rod 412; the chair back 3 comprises a chair back 31 and a chair back plate 32, wherein the chair back 31 is soft and wraps the front surface of the chair back plate 32, PU (poly urethane) artificial leather, mesh cloth and other materials can be adopted, a chair back inner cavity is formed between the chair back 31 and the chair back plate 32, and the chair back inner cavity is provided with: the vertical rod of the lever, the tray 43, the upper baffle 44 and the soft liquid bag 4, wherein the tray is supported by the upper ends of the vertical rods of the lever on the left side and the right side, the tray 43 comprises a transverse plate 431 and a vertical plate 432, the rear part of the transverse plate 431 is connected with the lower part of the vertical plate 432, the tray is integrally transversely arranged in the inner cavity of the chair back, the soft liquid bag 4 is arranged on the tray 43, the liquid bag 4 is integrally in a long strip shape and transversely arranged on the tray, the shape of the liquid bag 4 in fig. 1 is only a schematic diagram and does not represent the actual shape of the liquid bag, the upper baffle 44 is also arranged above the tray and the soft liquid bag, the upper baffle 44 is fixedly connected with the chair back plate, and the chair back can keep a certain shape when the chair is not used.

With the above structure, the basic object of the present invention can be achieved, and the working principle thereof is as follows: when a chair user sits down, the weight of the user descends the seat which is originally supported by the springs, the front ends of the cross bars of the levers 41 are driven by the

guide posts

21 and 23 to descend, the supporting points 42 are kept motionless in the up-down direction, the cross bars rotate around the supporting points, the vertical bars ascend and rotate towards the back direction of the user, the liquid bags 4 placed on the tray above the vertical bars deform under the blocking of the upper baffle plates and the extrusion of the tray, the liquid bags are propped against the back of the user along with the deformation, the effective support is generated for the back of the user, the shape of the back can be adapted, the feeling of the user is more comfortable, and the chair sits down when the user is in a state shown in fig. 3.

The lumbar support function achieved with the above structure has significant advantages, including: compared with other lumbar support chairs, the chair does not need extra manpower or electric drive, can utilize the pressure of a person to drive the lever and the soft liquid bag to support the waist well, and is convenient to operate; the structure is simple, and the manufacturing, maintenance and use costs are low; in addition, the lever principle is utilized, the support can be adjusted according to the weight of a person, and the larger the weight is, the larger the support force and the support amplitude are, and the better the support effect is.

Furthermore, in another preferred embodiment, the invention can also have a waist massage function, and the inner cavity of the chair back is also provided with a vibration generator 5 which acts on the liquid bag 4. The vibration generator 5 may be a common physical vibration generator, which is directly provided on the liquid bladder 4, to apply vibrations to the back of the person through the liquid bladder 4.

Preferably, the vibration generator 5 is an ultrasonic generator, which may not be in direct contact with the liquid bag 4, and is disposed in the position shown in fig. 1, and for the specific structure and principle of the ultrasonic generator, reference may be made to the prior art; by using the ultrasonic generator, the liquid in the liquid bag 4 can vibrate, thereby realizing the massage function on the back. Compared with the conventional massage chair, the massage mode of massaging through the massage contact points is adopted, the massage mode of the liquid bag acting on the human body is adopted, the massage force is more uniform, the effect is better, the installation structure can be optimized if the ultrasonic generator is adopted (the ultrasonic generator is not in direct contact with the liquid bag, the structure is more stable), and the movement noise is smaller.

With reference to the disclosure of the Chinese patent No. CN109395261A, the preferred ultrasonic frequency is between 20K and 1000KHz, the amplitude is between 10 and 200 microns, and the preferred amplitude is between 10 and 50 microns, so that cavitation can be better generated on blood in blood vessels of a human body, the oxygen carrying capacity of red blood cells is improved, and the method is more beneficial to the human body.

The liquid in the liquid bag 4 can be selected to be water so as to keep the cost low; when using the ultrasonic generator, sodium bicarbonate solution (sodium bicarbonate solution) is also selected, and sodium bicarbonate solution with pH value of 7.35-7.45 is more preferable, and vibration and massage effects can be better generated through resonance of liquid and ultrasonic wave.

Further, the upper baffle plate 44 is connected with the seat back surface 31 through a first flexible belt 46, the tray 43 is connected with the seat back surface 31 through a second flexible belt 47, and a third flexible belt 45 can be further arranged between the tray 43 and the upper baffle plate 44, so that the liquid bag can be better prevented from being separated from the space between the tray 43 and the upper baffle plate 44.

Specifically, the left and right sets of

guide posts

21 and 23 respectively have two guide posts, and each guide post includes a front guide post 22 and a rear guide post 23, where the length of the front guide post is greater than that of the rear guide post 23, and the rear portion of the seat is pivotally connected to the bottom bracket 1 through a rotating shaft 25.

The structure of the fulcrum 42 is schematically shown in fig. 4, 1 is a quadrilateral structure or a supporting leg on a support, the fulcrum 42 is installed on a vertical surface of the support, the support comprises a base 421, a universal joint 422 and a hoop 423, the base 421 is fixed on the bottom support, the hoop is installed on the base 421 through the universal joint 422, a cross rod of the lever 41 is arranged in the hoop, the hoop tightly holds the cross rod, the universal joint 422 is a conventional part, and a person skilled in the art can select the above structure as required, so that the lever can move around the fulcrum.

Preferably, the inner cavity of the chair back is internally provided with flocculent filler, for example: the cotton wool, silk floss and other substances can be the chair back to keep a certain shape and enhance the comfort of the chair.

Finally, it should be noted that: while the invention has been described in terms of specific embodiments, other modifications of the invention will be apparent to those skilled in the art from the teachings herein. The scope of the invention is defined by the claims, but other technical solutions that do not substantially differ from the claims should also be within the scope of the invention.

Claims

1. The utility model provides a lumbar support chair, includes bottom support (1), seat support (2), back of the chair (3), and the support includes a pair of preceding, back extension board (11) and a pair of left and right extension board (12), and preceding, back extension board (11) and left and right extension board (12) form quadrilateral frame, and seat support (2), back of the chair (3) are installed on the support, its characterized in that: two supporting plates (14) are arranged in parallel on the inner side of the quadrangular frame, a group of guide holes (15) are formed in each supporting plate (14), a left group of guide posts (21) and a right group of guide posts (23) are arranged below the seat (2), the guide posts (21, 23) correspond to the guide holes (15), and at least one guide post (21, 23) is provided with a reset spring which is supported between the supporting plate (14) and the seat (2); a lever (41) is arranged below each side supporting plate (14), each group of guide posts (21, 23) is connected with one lever (41), each guide post (21, 23) is connected with the lever (41) through a hinge point (22, 24), the lever (41) comprises a cross rod (411) and a vertical rod (412), the rear end of the cross rod (411) is connected with the lower end of the vertical rod (412), a fulcrum (42) is arranged on the cross rod (411), and the fulcrum is arranged behind the hinge point of one group of guide posts (21, 23) and the lever (41) and in front of the joint of the vertical rod and the cross rod; the chair back (3) comprises a chair back surface (31) and a chair back plate (32), wherein the chair back surface (31) is made of soft materials, the chair back surface (31) is wrapped in the front of the chair back plate (32), a chair back inner cavity is formed between the chair back surface (31) and the chair back plate (32), and a chair back inner cavity is provided with: the device comprises a vertical rod of a lever, a tray (43), an upper baffle (44) and a soft liquid bag (4), wherein the tray is supported by the upper ends of the vertical rods at two sides together, the tray (43) comprises a transverse plate (431) and a vertical plate (432), the rear part of the transverse plate (431) is connected with the lower part of the vertical plate (432), the soft liquid bag (4) is placed on the tray (43), the whole liquid bag (4) is in a long strip shape and horizontally placed on the tray, and the upper baffle is further arranged above the tray and the soft liquid bag and fixedly connected with a chair back plate;

the fulcrum (42) comprises a base (421), a universal joint (422) and a hoop (423), wherein the base (421) is fixed on the bottom bracket, the hoop is arranged on the base (421) through the universal joint, and a cross rod of the lever (41) is arranged in the hoop;

the inner cavity of the chair back is also provided with a vibration generator (5), and the vibration generator acts on the liquid bag (4);

the left and right groups of guide posts (21, 23) respectively comprise a front guide post (22), a rear guide post (23), the length of the front guide post is longer than that of the rear guide post (23), and the rear part of the chair seat is pivotally connected with the bottom bracket (1) through a rotating shaft (25);

the vibration generator (5) is an ultrasonic generator;

the liquid in the liquid bag (4) is sodium bicarbonate solution, and the pH value of the small soda is 7.35-7.45.

2. The lumbar support chair of claim 1 wherein: the upper baffle plate (44) is connected with the chair back surface (31) through a first flexible belt, and the tray (43) is connected with the chair back surface (31) through a second flexible belt.

3. Lumbar support chair according to claim 1 or 2, characterized in that: the inner cavity of the chair back is internally provided with flocculent filler.