CN111631548A

CN111631548A - Lumbar support chair

Info

Publication number: CN111631548A
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: 2020-09-08
Anticipated expiration: 2040-04-27
Also published as: CN111631548B

Abstract

The invention relates to a lumbar support chair, which comprises a bottom bracket, a chair seat and a chair back, and also comprises a structure for supporting the lumbar by utilizing the lever principle and a function for massaging the back of a user; compared with other lumbar support chairs, the chair does not need additional manpower and electric power for driving, can drive the lever and the soft liquid bag by using the pressure of a person sitting down, well supports the lumbar, and is convenient to operate; the structure is simple, and the manufacturing, maintenance and use costs are low; in addition, the support can be adjusted according to the weight of a person by utilizing a lever principle, and the larger the weight is, the larger the support force and the support amplitude are, the better the support effect is; moreover, the ultrasonic generator sends out ultrasonic waves to act on the liquid bag, so that the back can be uniformly massaged, and compared with common point massage, the back massage device has comfortable feeling and better 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 a daily furniture, but the back of the traditional chair is fixed, so that the waist is tired when the chair is kept in a sitting state for a long time, and diseases such as lumbar disc herniation or humpback can be caused.

There are two commonly used methods at present: one is to use an additional waist support which is directly placed on the chair, the waist support needs to be purchased and placed additionally, and the supporting effect is limited; another is to provide a lumbar support structure on a chair, and a person can support the waist by manually or electrically driving the support structure after sitting down, such as an adjusting device for a lumbar support disclosed in chinese patent publication CN103182974B, which is very complicated in structure, and the chair is expensive to manufacture, use and maintain, and thus cannot be generally accepted by consumers.

Disclosure of Invention

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

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

the utility model provides a lumbar support chair, includes bottom support, seat support, the 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 its characterized in that is installed on the support to seat support, the back of the chair: two support plates are arranged in parallel on the inner side of the quadrilateral frame, each support plate is provided with a group of guide holes, a left group of guide posts and a right group of guide posts are arranged below the chair seat and correspond to the guide holes, at least one guide post is provided with a return spring, and the return spring is supported between the support plate and the chair seat; a lever is arranged below each side supporting plate, each group of guide columns is connected with one lever, each guide column is connected with the lever through a hinge point, each 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 columns and the lever and in front of the connecting part of the vertical rod and the cross rod; the back of the chair includes the back of the chair face and chair back board, and the back of the chair face is soft material, the front of back of the chair face cladding chair back board, forms the back of the chair inner chamber between back of the chair face and the chair back board, is provided with in the back of the chair inner chamber: the upper baffle plate is arranged above the tray and the soft liquid bag, and the upper baffle plate is fixedly connected with the chair back plate.

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

Further, the vibration generator is an ultrasonic generator.

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

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

Furthermore, the upper baffle 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.

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

Furthermore, 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, flocculent fillers are arranged in the inner cavity of the chair back.

The invention has the following beneficial effects:

1. the lumbar support chair can drive the lever and the soft liquid bag by using the pressure of a person sitting down to well support the lumbar, is convenient to operate and does not need additional manpower and electric power for driving;

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

3. the back can be uniformly massaged by the ultrasonic generator which sends out ultrasonic waves to act on the liquid bag, and compared with the common point massage, the back massage device has comfortable feeling and better effect;

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

Drawings

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

FIG. 2 is a top view of the stent 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 will be further described below with reference to the accompanying drawings of the present invention, wherein the terms "front", "rear", "left", "right", "up" and "down" and the like indicating the orientation of the present invention are defined by the spatial positions of the chair in which a person is normally seated, the visual direction of the person is the front and the opposite direction of the person is the rear, and the left side of the person is the left side of the chair, the right side of the person is the right, the up and the down of the person, based on the general knowledge of those skilled in the art.

FIG. 1 is a perspective view of the entire lumbar support chair of the present invention with the interior portions shown in phantom. The invention relates to a lumbar support chair, which comprises a bottom support 1, a chair seat 2 and a chair back 3, wherein the support 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 in the modes of screws, splicing, glue joint and the like; the lower part of the bracket can be supported by four legs, as shown in figure 1, and can also be supported by a common air cylinder rotary chair structure.

Fig. 2 also shows that two support plates 14 are arranged in parallel inside the quadrilateral frame, each support plate 14 is provided with a group of guide holes 15, two groups of left and

right guide posts

21 and 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 and right sides 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. the return spring 21 is supported between the platform 14 and the seat 2 for returning the seat to its original position after the person has left the chair.

More specifically, as shown in fig. 1, a lever 41 is arranged below each side supporting plate 14, the lever is integrally in an "L" shape, 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

hinge point

22 and 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 fulcrum 42 is arranged on the cross rod 411, the fulcrum is arranged behind the hinge point of the group of

guide posts

21 and 23 and the lever 41 and in front of the connection between the vertical rod 411 and the cross rod 412, and the position of the fulcrum can be adjusted according to the actually required supporting amplitude; the chair back 3 comprises a chair back surface 31 and a chair back plate 32, the chair back surface 31 is soft and covers the front of the chair back plate 32, materials such as PU (polyurethane) artificial leather, mesh fabric and the like can be adopted, a chair back inner cavity is formed between the chair back surface 31 and the chair back plate 32, and the chair back inner cavity is internally provided with: the upper end of the vertical rod of the lever is supported by the upper end of the vertical rod 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 whole tray is transversely arranged in the inner cavity of the chair back, the soft liquid bag 4 is arranged on the tray 43, the whole liquid bag 4 is in a strip shape and transversely arranged on the tray, the shape of the liquid bag 4 in the figure 1 is only a schematic diagram and does not represent the real shape of the liquid bag, the upper baffle plate 44 is also arranged above the tray and the soft liquid bag, the upper baffle plate 44 is fixedly connected with the chair back plate, and when the chair is not used, the chair back can keep a certain shape.

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 enables the chair seat originally supported by the spring to descend, the front end of the cross rod of the lever 41 is driven to descend through the

guide columns

21 and 23, the fulcrum 42 is kept immovable in the up-down direction, the cross rod rotates around the fulcrum, so that the vertical rod ascends and rotates towards the back direction of the user, the liquid bag 4 placed on the tray on the upper portion of the vertical rod deforms under the blocking of the upper baffle plate and the extrusion of the tray, and accordingly the liquid bag leans against the back of the user to effectively support the back, can adapt to the shape of the back and enable the user to feel more comfortable, and the sitting state of the chair is as shown in fig. 3.

The lumbar support function achieved by the above structure has more prominent advantages, including: compared with other lumbar support chairs, the chair does not need additional manpower and electric power for driving, can drive the lever and the soft liquid bag by using the pressure of a person sitting down, well supports the lumbar, and is convenient to operate; the structure is simple, and the manufacturing, maintenance and use costs are low; in addition, the support can be adjusted according to the weight of a person by utilizing a lever principle, and the larger the weight is, the larger the supporting force and the supporting amplitude are, and the better the supporting effect is.

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

Preferably, said vibration generator 5 is an ultrasonic generator, which may be arranged in the position shown in fig. 1 without direct contact with the liquid capsule 4, for the specific structure and principle of the ultrasonic generator, reference is made to the prior art; the liquid in the liquid bag 4 can be vibrated by adopting the ultrasonic generator, thereby realizing the function of massaging the back. Compared with the conventional massage chair, the massage chair has the advantages that the massage mode that the liquid bag acts on a human body is adopted, the massage force is more uniform, the effect is better, and in addition, if the ultrasonic generator is adopted, the installation structure can be optimized (the ultrasonic generator is not in direct contact with the liquid bag, the structure is more stable), and the movement noise is lower.

Referring to the disclosure of Chinese patent application CN109395261A, the preferred ultrasonic frequency is 20K-1000 KHz, the amplitude is 10-200 microns, and preferably 10-50 microns, so that the cavitation effect on blood in blood vessels of human body can be better generated, the oxygen carrying capacity of red blood cells is improved, and the red blood cells are more beneficial to human body.

The liquid in the liquid bag 4 can be selected to be water so as to keep the cost low; when an ultrasonic generator is used, a baking soda solution (a sodium bicarbonate solution) can be selected, and a baking soda solution with the pH value of 7.35-7.45 is further preferred, so that vibration and massage effects can be better generated through the resonance of liquid and ultrasonic waves.

Furthermore, 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 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 two sets of

guide posts

21 and 23 respectively have two guide posts, which respectively include a front guide post 22 and a rear guide post 23, the length of the front guide post is greater than that of the rear guide post 23, and the rear part of the seat is pivotally connected with the bottom bracket 1 through a rotating shaft 25.

The structural schematic diagram of the fulcrum 42 is shown in fig. 4, 1 is a quadrilateral structure or a support leg on the support, the fulcrum 42 is installed on a vertical surface of the fulcrum, and comprises a base 421, a universal joint 422 and a hoop 423, the base 421 is fixed on the support at the bottom, the hoop is installed on the base 421 through the universal joint 422, a cross bar of the lever 41 is arranged in the hoop, the hoop holds the cross bar tightly, the universal joint 422 is a conventional part, and the technical personnel in the field can select and use the fulcrum as required, so that the structure can ensure that the lever can move around the fulcrum.

Preferably, the inner cavity of the chair back is internally provided with flocculent fillers, such as: cotton wool, silk floss and other substances can be used for keeping the chair back in a certain shape and enhancing the comfort of the chair.

Finally, it should be noted that: while the invention has been described in terms of specific embodiments, it will be apparent to those skilled in the art in light of the teachings herein that the invention can be modified in other ways. The scope of the present invention is defined by the claims, but other embodiments that do not substantially differ from the claims should also be construed as within the scope of the present 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: the inner side of the quadrilateral frame is provided with two supporting plates (14) in parallel, each supporting plate (14) is provided with a group of guide holes (15), 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), at least one guide post (21, 23) is provided with a return spring (21), and the return spring (21) 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 columns (21, 23) is connected with one lever (41), each guide column (21, 23) is connected with the lever (41) through a hinge point (22, 24), each 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 columns (21, 23) and the lever (41) and in front of the connecting position of the vertical rod and the cross rod; back of the chair (3) is including the back of the chair face (31) and chair back board (32), and back of the chair face (31) is soft material, the back of the chair face (31) cladding chair back board (32) in front, forms the back of the chair inner chamber between back of the chair face (31) and chair back board (32), back of the chair inner chamber is provided with: the montant of lever, tray (43), go up baffle (44), soft liquid bag (4), the tray is supported by the upper end of both sides montant jointly, tray (43) are including diaphragm (431) and riser (432), the rear portion of diaphragm (431) and the sub-unit connection of riser (432), place soft liquid bag (4) on tray (43), this liquid bag (4) are whole to be rectangular shape, transversely put on the tray, still be provided with the overhead gage in the top of tray and soft liquid bag, go up baffle and back of the chair board fixed connection.

2. The lumbar support chair of claim 1 wherein: 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).

3. The lumbar support chair of claim 2 wherein: the vibration generator (5) is an ultrasonic generator.

4. The lumbar support chair of claim 1 or 3, wherein: the liquid in the liquid bag (4) is water or a baking soda solution.

5. The lumbar support chair of claim 1 wherein: the upper baffle (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.

6. The lumbar support chair of any of claims 1-3, 5, wherein: the left and right guide posts (21, 23) respectively comprise a front guide post (22) and a rear guide post (23), the length of the front guide post is greater than that of the rear guide post (23), and the rear part of the chair seat is pivotally connected with the bottom support (1) through a rotating shaft (25).

7. The lumbar support chair of any of claims 1-3, 5, wherein: fulcrum (42) include base (421), universal joint (422), staple bolt (423), base (421) are fixed on the bottom support, the staple bolt passes through the universal joint to be installed on base (421), the horizontal pole setting of lever (41) is in the staple bolt.

8. The lumbar support chair of any of claims 1-3, 5, wherein: flocculent fillers are arranged in the inner cavity of the chair back.