阅读说明：本技术 一种具有腰部支撑及坐姿提醒功能的座椅 (Seat with lumbar support and sitting posture reminding functions ) 是由 祝小林 于 2021-11-01 设计创作，主要内容包括：本发明公开一种具有腰部支撑及坐姿提醒功能的座椅,干第一弹性件和放置件,将所述第一板体通过若干第一弹性件设置在放置件中,所述腰靠通过第二弹性件与第二板体连接,在所述靠垫中设置第一空槽,设置第三板体滑动在第一空槽中,所述主体还包括控制组件,所述控制组件包括转动板、推动板和第一连接轴和第二连接轴,所述转动板和推动板设置在第一连接轴上,所述第一连接轴通过扭簧转动在所述坐垫中,所述第三板体通过第二连接轴与推动板转动连接。根据第一板体移动距离实现对腰靠移动,以适配不同体重的人腰靠合适的位置,而通过第二弹性件设置在第二板体的腰靠,则在使用者久坐身体下塌时,开关将提醒装置启动。(The invention discloses a seat with functions of lumbar support and sitting posture reminding, which comprises a first elastic piece, a placing piece, a first plate body, a waist rest, a back cushion and a control assembly, wherein the first plate body is arranged in the placing piece through a plurality of first elastic pieces, the waist rest is connected with a second plate body through a second elastic piece, a first empty groove is formed in the back cushion, a third plate body is arranged in the back cushion and slides in the first empty groove, the main body further comprises the control assembly, the control assembly comprises a rotating plate, a pushing plate, a first connecting shaft and a second connecting shaft, the rotating plate and the pushing plate are arranged on the first connecting shaft, the first connecting shaft rotates in a seat cushion through a torsion spring, and the third plate body is rotatably connected with the pushing plate through the second connecting shaft. Realize leaning on the removal to the waist according to first plate body displacement to the suitable position is leaned on to the people's waist of different weight of adaptation, and leans on at the waist of second plate body through the second elastic component setting, then when the user sits for a long time and collapses, the switch will remind the device to start.)

1. The utility model provides a seat with lumbar support and position of sitting remind function, includes chair main part (1), main part (1) includes cushion (2) and cushion (301) set up waist on cushion (2) and lean on (3), its characterized in that: the cushion (2) comprises a first plate body (4), a plurality of first elastic pieces (5) and a placing piece (6), the first plate body (4) is arranged in the placing piece (6) through the plurality of first elastic pieces (5), the waist rest (3) is connected with the second plate body (7) through a second elastic piece (8), a first empty groove (9) is arranged in the back cushion (301), a third plate body (10) is arranged to slide in the first empty groove (9), the main body (1) further comprises a control assembly (11), the control assembly (11) comprises a rotating plate (12), a pushing plate (13), a first connecting shaft (14) and a second connecting shaft (15), the rotating plate (12) and the pushing plate (13) are arranged on a first connecting shaft (14), the first connecting shaft (14) rotates in the seat cushion (2) through a torsion spring, the third plate body (10) is connected in a sliding groove of the pushing plate (13) through a second connecting shaft (15).

2. A chair with lumbar support and sitting posture reminding functions as claimed in claim 1, wherein: the novel shoe cover is characterized in that the rotating plate (12) is located below the first plate body (4), the pushing plate (13) is arranged on one side of the second plate body (7), and an angle of 45 degrees is formed between the rotating plate (12) and the pushing plate (13).

3. A chair with lumbar support and sitting posture reminding functions as claimed in claim 1, wherein: set up reminding device (16) in main part (1), reminding device (16) are including promoting subassembly (17), promote subassembly (17) including flywheel (35), push rod (36) and roof (43), set up roof (43) between waist leans on (3) and push plate (13), push rod (36) one end second roof (43) are connected, push rod (36) other end sets up flywheel (35) outside, flywheel (35) rotate in cushion (301), when flywheel (35) rotate, push rod (36) are with roof (43) to waist lean on (3) one side removal repeatedly.

4. A chair with lumbar support and sitting posture reminding functions as claimed in claim 3, wherein: the folding cushion is characterized by further comprising a starting assembly (44), the starting assembly (44) comprises a ratchet wheel (18), a ratchet rack, a limiting plate (20), a third elastic part (22), a fourth elastic part (24), a pull rope (25), a scroll spring (26) and a connecting rod (27), the flywheel (35) is connected with the ratchet wheel (18) through the connecting rod (27), the scroll spring (26) is arranged between the flywheel (35) and the ratchet wheel (18), the ratchet rack is connected to one side of the ratchet wheel (18) in a matched mode, the ratchet rack is arranged on the limiting plate (20), the limiting plate (20) slides in the cushion (301), the ratchet rack is arranged on a folding edge (21) of the limiting plate (20) through a moving part (33), the third elastic part (22) is arranged between the folding edge (21) and the ratchet rack through the moving part (33), the fourth elastic part (24) is arranged between the folding edge (21) and the cushion (301), a connecting point (34) is arranged on the limiting plate (20), the connecting point (34) is connected with a plurality of groups of pull ropes (25), the volute spring (26) is positioned on the fixing plate (23), and the outer side of the volute spring (26) is fixedly connected with the fixing plate (23); when stay cord (25) pulling when limiting plate (20), limiting plate (20) drive the movement of ratchet rack, ratchet (18) clockwise rotation drives volute spiral spring (26) compression, and the effort of stay cord (25) disappears, under the effect of fourth elastic component (24), limiting plate (20) remove to fourth elastic component (24), the ratchet rack just overcomes third elastic component (22) to moving member (33) direction and removes, and ratchet (18) can not rotate.

5. A chair with lumbar support and sitting posture reminding functions as claimed in claim 4, wherein: connecting rod (27) include the first body of rod (28), the second body of rod (29) and telescopic link (30), the first body of rod (28) is connected with ratchet (18), the second body of rod (29) with flywheel (35) are connected, telescopic link (30) slide between the first body of rod (28) telescopic link (30) top sets up first magnetic part (32) set up first electro-magnet (31) between the second body of rod (29), when driving first electro-magnet (31) and have magnetism, telescopic link (30) are connected with the second body of rod (29).

6. A chair with lumbar support and sitting posture reminding functions as claimed in claim 5, wherein: the push rod (36) comprises a third rod body (37) and a fourth rod body (38), the third rod body (37) slides in the fourth rod body (38), the third rod body (37) is connected with the top plate (43), the fourth rod body (38) is connected with the flywheel (35), a second electromagnet is arranged on the outer side of the third rod body (37), a second magnetic piece is arranged inside the fourth rod body (38), and when the second electromagnet is magnetic, the third rod body (37) is connected with the fourth rod body (38).

7. A chair with lumbar support and sitting posture reminding functions as claimed in claim 6, wherein: a third electromagnet (39) is arranged on one side of the ratchet rack, a third magnetic part (40) is arranged on the folded edge (21), and when the third electromagnet (39) is electrified, the ratchet rack overcomes a third elastic part (22) and is connected to the folded edge (21).

8. A chair with lumbar support and sitting posture reminding functions as claimed in claim 7, wherein: a switch (41) is arranged on the second plate body (7), the switch (41) is arranged between the top plates (43), and when the switch (41) is pressed by the waist rest (3) against the second elastic piece (8), the first electromagnet (31), the second electromagnet and the third electromagnet (39) are electrified to be provided with magnetic pieces.

9. A chair with lumbar support and sitting posture reminding functions as claimed in claim 4, wherein: set up a plurality of fixed points (42) on first plate body (4), stay cord (25) pass catch bar and rotor plate (12) and are connected with fixed point (42) on first plate body (4), work as when first plate body (4) downstream, stay cord (25) drive limiting plate (20) and remove.

Technical Field

The invention relates to the technical field of chairs, in particular to a chair with functions of lumbar support and sitting posture reminding.

Background

The chair is a living article which is very needed in daily life, but as is known to be well known, no force is applied to the waist when the chair is sitting for a long time, therefore, the waist discomfort can affect the health of the user due to the lumbar muscle strain and the like, so that the waist support can be provided on the chair to support the waist and reduce the waist discomfort, however, the body level of each person is different, for example, the person is over-fat or over-thin, the person with over-fat is easy to sit on the chair due to the fat, however, the distance between the waist and the chair back cushion is far away, so people with less fat can not have the problem, the waist rest can not be simultaneously suitable for users with different body types, meanwhile, when a person sits for a long time, the person can unconsciously collapse downwards, and the loss of the waist is increased, so that the chair with the functions of waist support and sitting posture reminding is provided for solving the problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a seat with functions of lumbar support and sitting posture reminding.

In order to solve the technical problems, the invention is solved by the following technical scheme: the utility model provides a seat with lumbar support and position of sitting remind function includes chair main part, the main part includes cushion and cushion set up the waist on the cushion and lean on, the cushion includes first plate body, a plurality of first elastic component and places the piece, will first plate body sets up in placing the piece through a plurality of first elastic components, the waist is by being connected through second elastic component and second plate body set up first dead slot in the cushion, set up the third plate body and slide in first dead slot, the main part still includes control assembly, control assembly includes rotor plate, slurcam and first connecting axle and second connecting axle, rotor plate and slurcam setting are on first connecting axle, first connecting axle passes through the torsional spring and rotates in the cushion, the third plate body is connected through the second connecting axle in the spout of slurcam.

In the above scheme, preferably, the rotating plate is located below the first plate body, the pushing plate is arranged on one side of the second plate body, and an angle of 45 ° is formed between the rotating plate and the pushing plate.

In the above scheme, it is preferable that a reminding device is arranged in the main body, the reminding device comprises a pushing assembly, the pushing assembly comprises a flywheel, a push rod and a top plate, the top plate is arranged between the waist support and the pushing plate, a second top plate at one end of the push rod is connected, the other end of the push rod is arranged on the outer side of the flywheel, the flywheel rotates in the back cushion, and when the flywheel rotates, the push rod repeatedly moves the top plate to one side of the waist support.

In the above scheme, preferably, the device further comprises a starting assembly, the starting assembly comprises a ratchet wheel, a ratchet rack, a limiting plate, a third elastic element, a fourth elastic element, a pull rope, a volute spring and a connecting rod, the flywheel is connected with the ratchet wheel through a connecting rod, a volute spiral spring is arranged between the flywheel and the ratchet wheel, one side of the ratchet wheel is matched and connected with a ratchet wheel rack, the ratchet wheel rack is arranged on the limit plate, the limiting plate slides in the back cushion, the ratchet rack is arranged on the folded edge of the limiting plate through a moving piece, a third elastic piece is arranged between the folded edge and the ratchet rack after penetrating through the moving piece, a fourth elastic piece is arranged between the folded edge and the back cushion, the limiting plate is provided with connecting points which are connected with a plurality of groups of pull ropes, the volute spiral spring is positioned on the fixed plate, and the outer side of the volute spiral spring is fixedly connected with the fixed plate; when the pull rope pulls the limiting plate, the limiting plate drives the ratchet rack to move, the ratchet wheel rotates clockwise to drive the volute spiral spring to compress, the acting force of the pull rope disappears, the limiting plate moves towards the fourth elastic piece under the action of the fourth elastic piece, the ratchet rack moves towards the moving piece and overcomes the third elastic piece, and the ratchet wheel cannot rotate.

In the above scheme, it is preferable that the connecting rod includes a first body of rod, a second body of rod and a telescopic link, the first body of rod is connected with the ratchet, the second body of rod with the flywheel is connected, the telescopic link slides between the first body of rod set up first magnetic part above the telescopic link set up first electro-magnet between the second body of rod, when driving first electro-magnet and have magnetism, the telescopic link is connected with the second body of rod.

In the foregoing solution, preferably, the push rod includes a third rod and a fourth rod, the third rod slides in the fourth rod, the third rod is connected to the top plate, the fourth rod is connected to the flywheel, a second electromagnet is disposed outside the third rod, a second magnetic member is disposed inside the fourth rod, and when the second electromagnet is magnetic, the third rod is connected to the fourth rod.

In the above-mentioned solution, preferably, a third electromagnet is disposed on one side of the ratchet rack, a third magnetic member is disposed on the folded edge, and when the third electromagnet is energized, the ratchet rack is connected to the folded edge by overcoming a third elastic member.

In the above aspect, preferably, a switch is disposed on the second plate body, the switch is disposed between the top plates, and when the switch is pressed by the lumbar support against the second elastic member, the first electromagnet, the second electromagnet, and the third electromagnet are energized to have a magnetic member.

In the above-mentioned scheme, the preferred be set up a plurality of fixed points on the first plate body, the stay cord passes catch bar and rotor plate and is connected with the fixed point on the first plate body, works as when the first plate body moves down, the stay cord drives the limiting plate and removes.

The invention has the beneficial effects that: cooperate first plate body and first elastic component in the cushion, when the realization is sat on the cushion, first plate body sinks according to weight, the control assembly of cooperation setting in cushion and cushion simultaneously, realize leaning on the removal to the waist according to first plate body displacement, lean on suitable position with the people waist of the different weight of adaptation, and lean on at the waist of second plate body through the second elastic component setting, then when the user sits the health and collapses for a long time, the switch starts reminding device, the push rod that promotes the subassembly promptly leans on the waist to remove to the user repeatedly, realize reminding the user this moment position of sitting improper, easily cause the loss to the waist.

Drawings

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

FIG. 2 is a cross-sectional view of the present invention.

Fig. 3 is an enlarged view of fig. 2 at a.

Fig. 4 is a perspective view of the present invention with a fixation plate inside.

Fig. 5 is an enlarged view of fig. 4 at B.

Fig. 6 is a perspective view of the present invention without a fixation plate therein.

Fig. 7 is a top view of the reminder device of the present invention.

FIG. 8 is a schematic structural diagram of a control assembly according to the present invention.

FIG. 9 is a diagram of the relationship of the control assembly and the top plate of the present invention.

Fig. 10 is a bottom view of the first plate of the present invention.

Figure 11 is a schematic view of the rotatable lumbar support of the present invention.

Fig. 12 is a cross-sectional view of the present invention.

Fig. 13 is an enlarged view of fig. 12 at C.

Fig. 14 is an enlarged view of fig. 12 at D.

Fig. 15 is a sectional view taken along line E-E of fig. 12.

Fig. 16 is an enlarged view of fig. 15 at F.

Fig. 17 is an enlarged view at H of fig. 15.

Fig. 18 is an enlarged view at G of fig. 15.

Figure 19 is a schematic view of the rotatable and movable lumbar support of the present invention.

Detailed Description

Example 1: the invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1-6, a chair with lumbar support and sitting posture reminding functions comprises a chair main body 1, the chair comprises a cushion 2 and a back cushion 301, a general user sits on the cushion 2, and a certain gap is usually left between the waist and the back cushion 301, so that the waist cannot be supported, and health problems exist in the waist over time.

Cushion 2 is including placing piece 6, first plate body 4 and a plurality of first elastic component 5, place and set up first plate body 4 through first elastic component 5 in the piece 6, in this implementation, first elastic component 5 is preferred 4 groups, sets up respectively on four diagonal angles of first plate body 4, and the material of placing piece 6 simultaneously is soft material, also can set up the soft material of one deck in order to realize sitting more comfortable when the upper surface of first plate body 4, therefore the user is when sitting on first plate body 4, first plate body 4 overcome first elastic component 5 alright with the downstream.

Place the waist above first plate body 4 and lean on 3, the waist leans on 3 to be located between human waist and the cushion 301 for support the waist, the waist leans on 3 to be connected with second plate body 7 through the second elastic component 8 of a plurality of groups, and is preferred, two sets of 8 symmetries of second elastic component set up on the second plate body 7.

For users whose lumbar support 3 cannot be adapted to different body sizes, a control unit 11 is therefore provided in the backrest 301 of said seat cushion 2, the control assembly 11 comprises a rotating plate 12, a pushing plate 13 and a first connecting shaft 14 and a second connecting shaft 15, the two ends of the first connecting shaft 14 are connected with the cushion 2, furthermore, the first connecting shaft 14 is rotatably connected with the placing part 6, the rotating plate 12 and the pushing plate 13 are simultaneously arranged on the rotating part, the rotating plate 12 is arranged below the first plate body 4, the pushing plate 13 is arranged in the cushion 301 at one side of the second plate body 7, a preferred angle of 45 deg. is provided between the turning plate 12 and the pushing plate 13, to achieve that the turning plate 12 is in the downward movement of the first plate body 4, when the rotating plate 12 drives the first connecting shaft 14 to rotate towards the first elastic member 5, the pushing plate 13 moves towards the second plate 7.

The control assembly 11 further includes a third plate 10, the third plate 10 is vertically disposed in the back cushion 301, so that the third plate 10 is connected to the sliding slot 45 of the pushing plate 13 through a second connecting shaft 15, the back cushion 301 is provided with a first empty slot 9, and the third plate 10 slides in the first empty slot 9, so that when the pushing plate 13 drives the third plate 10 to move, an angle between the third plate and the third plate 10 continuously changes, that is, the third plate 10 slides in the sliding slot 45 under the action of the second connecting shaft 15, and the second connecting shaft 15 can rotate at any position in the sliding slot 45, and meanwhile, the third plate 10 is connected to the second plate 7, so that the position of the second plate 7, that is, the position of the lumbar support 3, is always controlled by the third plate 10.

The placing member 6 is preferably connected with the first connecting shaft 14 through a torsion spring, so that when the first plate 4 moves downwards, the position of the lumbar support 3 changes to adapt to users with different body weights and body shapes, and under the action of the torsion spring, after the user leaves the first plate, the torsion spring restores the first connecting shaft 14 to the initial position, and meanwhile, the position of the lumbar support 3 also restores to the initial position.

In order to remind the user of the problem that the body of the user is unconsciously stood down and the force to be born by the waist is further increased after the user sits for a long time, a reminding device 16 is further arranged in the main body 1, the reminding device 16 comprises a pushing component 17 and an actuating component 44, the pushing component 17 is used for repeatedly pushing the waist rest 3 for reminding the user, and the actuating component 44 is an important component responsible for automatically opening or closing the pushing component 17.

The starting component 44 sets up in the cushion 301, and preferably set up the top at control assembly 11, starting component 44 includes ratchet 18, ratchet rack, limiting plate 20, third elastic component 22, fourth elastic component 24, stay cord 25, spiral spring 26 and connecting rod 27, ratchet 18 rotates and connects in the cushion 301, preferably sets up on the first bottom plate of cushion 301, drives ratchet 18 and passes through connecting rod 27 and connect on first bottom plate set up spiral spring 26 on the connecting rod 27 set up fixed plate 23 on spiral spring 26 bottom, fixed plate 23 and cushion 301's internal connection, and when ratchet 18 rotates, spiral spring 26 realizes the rotation equally.

A ratchet rack is arranged on one side of the ratchet wheel 18, the ratchet rack is matched with and connected with the ratchet wheel 18, teeth of the ratchet rack and teeth of the ratchet wheel 18 are provided with certain inclined planes, when the racks move towards one side far away from the seat cushion 2, the ratchet rack and the ratchet wheel 18 are mutually clamped and the rotation of the ratchet wheel 18 is realized, at the moment, the ratchet wheel 18 drives the volute spiral spring 26 to rotate together through a rotating rod, and the volute spiral spring 26 is compressed to realize force storage.

The ratchet rack is preferably arranged on the limiting plate 20, the limiting plate 20 comprises a folded edge 21, the ratchet rack is arranged on the folded edge 21 of the limiting plate 20 through two groups of moving pieces 33, the moving pieces 33 can move on the folded edge 21, a third elastic piece 22 is arranged between the folded edge 21 and the ratchet rack and penetrates through the moving pieces 33, when the ratchet rack moves towards one side of the seat cushion 2, the inclined surface of the ratchet rack is tangent to the inclined surface of the ratchet 18, the ratchet rack can move towards one side of the folded edge 21 by overcoming the third elastic piece 22, and the movement of the ratchet rack is not influenced.

A fixing plate 23 is arranged at the bottom of the scroll spring 26, the scroll spring 26 is placed on the fixing plate 23, the fixing plate 23 is connected in the back cushion 301, and the outermost side of the scroll spring 26 is fixed on the fixing plate 23.

One side of the limiting plate 20 close to the seat cushion 2 is connected to the inside of the back cushion 301 through a fourth elastic element 24, the other side of the limiting plate 20 is provided with a connection point 34, the connection point 34 is connected with a pull rope 25, when the pull rope 25 pulls the limiting plate 20, the limiting position drives the moving element 33 and the ratchet rack to drive the ratchet 18 to rotate, namely, the volute spring 26 is compressed, when the pull rope 25 does not pull the limiting plate 20, the fourth elastic element 24 moves the limiting plate 20 to one side of the seat cushion 2, at the moment, the ratchet rack overcomes the third elastic element 22 to prevent the ratchet 18 and the ratchet rack from being limited under the effect of the inclined plane until the limiting plate 20 and the initial position are restored, at the moment, the volute spring 26 is compressed, the volute is repeatedly operated, and the continuous force accumulation of the spring 26 is realized.

The promotion subassembly 17 is connected with start-up subassembly 44 through connecting rod 27, it includes flywheel 35, push rod 36 and roof 43 to promote subassembly 17, flywheel 35 with connecting rod 27 connects, connecting rod 27 includes first body of rod 28 and second body of rod 29, promptly ratchet 18 and spiral spring 26 are connected on the first body of rod 28 sliding connection telescopic link 30 in the first body of rod 28, telescopic link 30 is preferably the polygon, in this implementation, the cross-section of telescopic link 30 is regular hexagon the second body of rod 29 with flywheel 35 is connected, the second body of rod 29 passes through the bearing to be fixed in cushion 301, promptly the bearing outside and cushion 301 fixed connection, the bearing is inboard to be connected with the second body of rod 29, and the inside recess that sets up the regular hexagon that matches with telescopic link 30 of the second body of rod 29.

A push rod 36 is connected to the upper surface of the flywheel 35, the push rod 36 is preferably rotatably connected to the flywheel 35 near the edge, the push rod 36 passes through the second empty slot of the back cushion 301 and is connected to a top plate 43 arranged between the lumbar support 3 and the second plate body 7, the top plate 43 is preferably arranged on the second plate body 7, a hollow area is arranged on the top plate 43 and is arranged around the second elastic member 8, and therefore the second top plate 43 cannot move the second elastic member 8 to the lumbar support 3.

The push rod 36 includes a third rod 37 and a fourth rod 38, the third rod 37 slides in the fourth rod 38, and when the lumbar support 3 is pushed outward by the control component 11, the third rod 37 moves together.

The upper end of the telescopic rod 30 is provided with a first magnetic part 32, a first electromagnet 31 is arranged in a groove of the second rod body 29, a second magnetic part is arranged on the third rod body 37, a second electromagnet is arranged in the fourth rod body 38, a third electromagnet 39 is arranged on one side of the ratchet rack, a third magnetic part 40 is arranged on the folded edge 21, a switch 41 for controlling the first electromagnet 31, the second electromagnet and the third electromagnet 39 is arranged, and the switch 41 is arranged between the two groups of second elastic parts 8, so that when a user sits for a long time and further moves towards the lumbar support 3, the lumbar support 3 overcomes the acting force of the second elastic parts 8 to trigger the switch 41, and the user enters to trigger each group of electromagnets.

A plurality of fixing points 42 are disposed on the lower surface of the first plate 4, the number of the fixing elements is preferably 4 groups in this embodiment, that is, the fixing elements are disposed on one side of the second elastic element 8, and the other end of the pulling rope 25 downward from the connection point 34 on the limiting plate 20 passes through the pushing rod and the rotating plate 12, the pushing rod is provided with a third empty slot, and the rotating plate 12 is provided with a fourth empty slot.

A set of pull cords 25 are further connected to each of the fixing points 42, and the sets of pull cords 25 are reasonably joined together in the first plate 4 by the rollers, and are connected to the pull cords 25 passing through the rotating plate 12, so that when a user sits on the first plate 4, the pull cords 25 are pulled, and the user also moves while sitting, and the pull cords 25 also move, so that the spiral spring 26 can accumulate force.

The working principle is as follows: when a user sits on the first plate body 4, the first plate body 4 overcomes the first elastic piece 5 to move downwards, the moving distance of the first plate body 4 is different according to different weights, therefore, the first plate body 4 rotates the rotating piece downwards to overcome the acting force of the torsion spring, the pushing plate 13 moves the third plate body 10 towards the outer side of the back cushion 301 in the first empty groove 9, and therefore, the second plate body 7 and the waist rest 3 simultaneously move outwards to be matched with the user; when the first plate 4 is downward, the fixing point 42 also drives the pulling rope 25 downward to pull, that is, the limiting plate 20 and the ratchet rack move, and the ratchet 18 drives the scroll spring 26 to rotate, the scroll spring 26 is compressed, and in the process of sedentary, each set of fixing points 42 also descends to different degrees, so the ratchet 18 can continuously accumulate force, when the user sedentary sinks, the waist rest 3 overcomes the second elasticity to trigger the switch 41, the first electromagnet 31, the second electromagnet and the third electromagnet 39 are energized simultaneously to have magnetism, when the first electromagnet 31 has magnetism, the telescopic rod 30 moves to the first electromagnet 31 in the second rod 29 under the action of the first magnetic piece 32, the second electromagnet on the third rod 37 is attracted to the second magnetic piece in the fourth rod 38, and simultaneously the ratchet rack overcomes the third elastic piece 22 to be attracted to the folded edge 21, the limit of the spiral spring 26 is released, because the ratchet wheel 18 starts to rotate under the action of the spiral spring 26, the flywheel 35 rotates along with the rotation, and the push rod 36 drives the top plate 43 to move the lumbar support 3 outwards repeatedly so as to remind a user of great waist loss at the moment.

Example 2: the invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 19, including a chair body 1, the chair includes a cushion 2 and a backrest 301, and a general user sits on the cushion 2, and a certain gap is often left between the waist and the backrest 301, so that the waist is not supported, and health problems exist in the waist over time.

Cushion 2 is including placing piece 6, first plate body 4 and a plurality of first elastic component 5, place and set up first plate body 4 through first elastic component 5 in the piece 6, in this implementation, first elastic component 5 is preferred 4 groups, sets up respectively on four diagonal angles of first plate body 4, and the material of placing piece 6 simultaneously is soft material, also can set up the soft material of one deck in order to realize sitting more comfortable when the upper surface of first plate body 4, therefore the user is when sitting on first plate body 4, first plate body 4 overcome first elastic component 5 alright with the downstream.

Place the waist above first plate body 4 and lean on 3, the waist leans on 3 to be located between human waist and the cushion 301 for support the waist, the waist leans on 3 to be connected with second plate body 7 through the second elastic component 8 of a plurality of groups, and is preferred, two sets of 8 symmetries of second elastic component set up on the second plate body 7.

For users whose lumbar support 3 cannot be adapted to different body sizes, a control unit 11 is therefore provided in the backrest 301 of said seat cushion 2, the control assembly 11 comprises a rotating plate 12, a pushing plate 13 and a first connecting shaft 14 and a second connecting shaft 15, both ends of the first connecting shaft 14 are connected with the cushion 2, further, the first connecting shaft 14 is rotatably connected with the placing member 6, the rotating plate 12 and the pushing plate 13 are simultaneously arranged on the rotating plate 12, the rotating plate 12 is arranged below the first plate body 4, the pushing plate 13 is arranged in the cushion 301 at one side of the second plate body 7, a preferred angle of 45 deg. is provided between the turning plate 12 and the pushing plate 13, to achieve that the turning plate 12 is in the downward movement of the first plate body 4, when the rotating plate 12 drives the first connecting shaft 14 to rotate towards the first elastic member 5, the pushing plate 13 moves towards the second plate 7.

The control assembly 11 further includes a third plate 10, the third plate 10 is vertically disposed in the back cushion 301, so that the third plate 10 is connected to the sliding slot 45 of the pushing plate 13 through a second connecting shaft 15, the back cushion 301 is provided with a first empty slot 9, and the third plate 10 slides in the first empty slot 9, so that when the pushing plate 13 drives the third plate 10 to move, an angle between the third plate and the third plate 10 continuously changes, that is, the third plate 10 slides in the sliding slot 45 under the action of the second connecting shaft 15, and the second connecting shaft 15 can rotate at any position in the sliding slot 45, and meanwhile, the third plate 10 is connected to the second plate 7, so that the position of the second plate 7, that is, the position of the lumbar support 3, is always controlled by the third plate 10.

The placing member 6 is preferably connected with the first connecting shaft 14 through a torsion spring, so that when the first plate 4 moves downwards, the position of the lumbar support 3 changes to adapt to users with different body weights and body shapes, and under the action of the torsion spring, after the user leaves the first plate, the torsion spring restores the first connecting shaft 14 to the initial position, and meanwhile, the position of the lumbar support 3 also restores to the initial position.

In order to remind the user of the problem that the body of the user is unconsciously stood down and the force to be born by the waist is further increased after the user sits for a long time, a reminding device 16 is further arranged in the main body 1, the reminding device 16 comprises a pushing component 17 and an actuating component 44, the pushing component 17 is used for repeatedly pushing the waist rest 3 for reminding the user, and the actuating component 44 is an important component responsible for automatically opening or closing the pushing component 17.

The starting assembly 44 sets up in the cushion 301, and preferably set up the top at control assembly 11, starting assembly 44 includes ratchet 18, ratchet rack 19, limiting plate 20, third elastic component 22, fourth elastic component 24, stay cord 25, spiral spring 26 and connecting rod 27, ratchet 18 rotates and connects in the cushion 301, preferably sets up on the first bottom plate of cushion 301, drives ratchet 18 and passes through connecting rod 27 and connect on first bottom plate set up spiral spring 26 on the connecting rod 27 set up fixed plate 23 on spiral spring 26 bottom, fixed plate 23 and cushion 301's internal connection, and when the ratchet 18 rotates, spiral spring 26 realizes the rotation equally.

A ratchet rack 19 is arranged on one side of the ratchet wheel 18, the ratchet rack 19 is matched with and connected with the ratchet wheel 18, teeth of the ratchet rack 19 and teeth of the ratchet wheel 18 are provided with certain inclined planes, when the racks move towards one side far away from the seat cushion 2, the ratchet rack 19 and the ratchet wheel 18 are mutually clamped and the rotation of the ratchet wheel 18 is realized, at the moment, the ratchet wheel 18 drives the volute spiral spring 26 to rotate together through a rotating rod, and the volute spiral spring 26 is compressed to realize force storage.

The ratchet rack 19 is preferably arranged on the limiting plate 20, the limiting plate 20 comprises a folded edge 21, the ratchet rack 19 is arranged on the folded edge 21 of the limiting plate 20 through two groups of moving pieces 33, the moving pieces 33 can move on the folded edge 21, a third elastic piece 22 is arranged between the folded edge 21 and the ratchet rack 19 and penetrates through the moving pieces 33, when the ratchet rack 19 moves towards one side of the seat cushion 2, the inclined surface of the ratchet rack 19 is tangent to the inclined surface of the ratchet 18, the ratchet rack 19 can overcome the third elastic piece 22 to move towards one side of the folded edge 21, and the movement of the ratchet rack 19 is not influenced.

A fixing plate 23 is arranged at the bottom of the scroll spring 26, the scroll spring 26 is placed on the fixing plate 23, the fixing plate 23 is connected in the back cushion 301, and the outermost side of the scroll spring 26 is fixed on the fixing plate 23.

One side of the limiting plate 20 close to the seat cushion 2 is connected to the inside of the backrest cushion 301 through a fourth elastic element 24, the other side of the limiting plate 20 is provided with a connection point 34, the connection point 34 is connected with a pull rope 25, when the pull rope 25 pulls the limiting plate 20, the limiting position drives the moving element 33 and the ratchet rack 19 to drive the ratchet 18 to rotate, namely, the volute spiral spring 26 is compressed, when the pull rope 25 does not pull the limiting plate 20, the fourth elastic element 24 moves the limiting plate 20 to one side of the seat cushion 2, at the moment, the ratchet rack 19 overcomes the third elastic element 22 to prevent the ratchet 18 and the ratchet rack 19 from being limited under the action of the inclined surface until the limiting plate 20 and the initial position are restored, at the moment, the volute spiral spring 26 is compressed, and the operation is repeated, so that the volute spiral spring 26 continuously stores force.

The promotion subassembly 17 is connected with start-up subassembly 44 through connecting rod 27, it includes flywheel 35, push rod 36 and roof 43 to promote subassembly 17, flywheel 35 with connecting rod 27 connects, connecting rod 27 includes first body of rod 28 and second body of rod 29, promptly ratchet 18 and spiral spring 26 are connected on the first body of rod 28 sliding connection telescopic link 30 in the first body of rod 28, telescopic link 30 is preferably the polygon, in this implementation, the cross-section of telescopic link 30 is regular hexagon the second body of rod 29 with flywheel 35 is connected, the second body of rod 29 passes through the bearing to be fixed in cushion 301, promptly the bearing outside and cushion 301 fixed connection, the bearing is inboard to be connected with the second body of rod 29, and the inside recess that sets up the regular hexagon that matches with telescopic link 30 of the second body of rod 29.

A push rod 36 is connected to the upper surface of the flywheel 35, the push rod 36 is preferably rotatably connected to the flywheel 35 near the edge, the push rod 36 passes through the second empty slot of the back cushion 301 and is connected to a top plate 43 arranged between the lumbar support 3 and the second plate body 7, the top plate 43 is preferably arranged on the second plate body 7, a hollow area is arranged on the top plate 43 and is arranged around the second elastic member 8, and therefore the second top plate 43 cannot move the second elastic member 8 to the lumbar support 3.

The push rod 36 includes a third rod 37 and a fourth rod 38, the third rod 37 slides in the fourth rod 38, and when the lumbar support 3 is pushed outward by the control component 11, the third rod 37 moves together.

The upper end of the telescopic rod 30 is provided with a first magnetic part 32, a groove of the second rod body 29 is provided with a first electromagnet 31, a third rod body 37 is provided with a second magnetic part, a fourth rod body 38 is provided with a second electromagnet, one side of the ratchet rack 19 is provided with a third electromagnet 39, the folded edge 21 is provided with a third magnetic part 40, a switch 41 for controlling the first electromagnet 31, the second electromagnet and the third electromagnet 39 is arranged, and the switch 41 is arranged between the two groups of second elastic parts 8, so that when a user sits on the waist support 3 for a long time and further moves, the waist support 3 overcomes the acting force of the second elastic parts 8 to trigger the switch 41, and the user enters to trigger each group of electromagnets.

A plurality of fixing points 42 are disposed on the lower surface of the first plate 4, the number of the fixing elements is preferably 4 groups in this embodiment, that is, the fixing elements are disposed on one side of the second elastic element 8, and the other end of the pulling rope 25 downward from the connection point 34 on the limiting plate 20 passes through the pushing rod and the rotating plate 12, the pushing rod is provided with a third empty slot, and the rotating plate 12 is provided with a fourth empty slot.

A set of pull cords 25 are further connected to each of the fixing points 42, and the sets of pull cords 25 are reasonably joined together in the first plate 4 by the rollers, and are connected to the pull cords 25 passing through the rotating plate 12, so that when a user sits on the first plate 4, the pull cords 25 are pulled, and the user also moves while sitting, and the pull cords 25 also move, so that the spiral spring 26 can accumulate force.

Including chair main part 1, main part 1 includes cushion 2, cushion 301 and handle 46, cushion 301 sets up one side of cushion 2, and the user sits on cushion 2, the back can rely on cushion 301, be in simultaneously the both sides of cushion 2 and cushion 301 set up two sets of handles 46, main part 1 still includes the waist and leans on 3, the waist lean on 3 through second elastic component 8 with the second plate body 7 is connected, when the user laminates main part 1 completely and sits down, the waist leans on 3 the damage that the waist that will support the user reduces to sit for a long time and brings.

However, in order to solve the problem that the lumbar support 3 cannot effectively support the waist when the user often sits with the back having a certain angle without completely fitting the seat cushion 2, the seat cushion 2 comprises a seat plate 47 and a placing member 6, the seat plate 47 is arranged in the placing member 6, a lifting plate 48 is arranged above the seat plate 47, and a moving space is formed between the lifting plate 48 and the seat plate 47.

The lifter plate 48 sets up a plurality of groups and places the top of seat 47 in proper order, and single group's lifter plate 48 includes diaphragm 67 and sets up diaphragm 67 both sides riser 68 set up second bracing piece 69 below riser 68, the preferred cylinder of second bracing piece 69, place 6 with handle 46 runs through each other set up backup pad 49 in the handle 46, set up a plurality of passing holes 70 in the backup pad 49, passing hole 70 corresponds the setting with second bracing piece 69 one by one, just the quantity of passing hole 70 and the quantity of second bracing piece 69 are always set up first elastic component 50 between second bracing piece 69 and the backup pad 49, consequently when the user sits when on the cushion 2, the regional lifter of user's seat all overcomes the elasticity of first elastic component 50 will the downward movement of second bracing piece 69.

An inclined plate 52 is provided in the handle 46, one end of the inclined plate 52 is arranged to slide on the horizontal plane of the handle 46, and the other end of the inclined plate 52 slides on the vertical plane of the handle 46, so that when the inclined plate 52 is moved to the left, i.e. away from the back pad 301, the angle of the inclined plate 52 changes.

A first block 54 is arranged at the bottom of the inclined plate 52 and on the horizontal surface of the handle 46, the first block 54 is preferably connected with the inclined plate 52, a first support rod 56 is arranged on the first block 54, a second block 55 is arranged at the inner side in the handle 46, the second block 55 and the first block 54 are connected through a second elastic part 58, a first through hole 57 is arranged on the first support rod 56, the direction of the first through hole 57 is preferably vertical, a second through hole 59 is arranged on the second block 55, and the second through hole 59 is arranged at the inner side of the second elastic part 58 and can just pass through the first support rod 56.

A fourth elastic member 74 is provided in the handle 46 at one side of the second block 55, the diameter of the fourth elastic member 74 is smaller than that of the first support rod 56, that is, the first support rod 56 can move against the fourth elastic member 24, a third through hole is provided in the vertical direction of the second block 55, when the first through hole 57 and the second through hole of the first support rod 56 are aligned, the fourth elastic member 74 can be compressed, and thus a stopper rod 64 is provided through the first through hole 57 and the second through hole 59, and the second elastic member 58 is stopped, that is, the horizontal side of the inclined plate 52 cannot move.

The upper portion of the cushion 301 for the square back is provided with a convex portion 61, the upper portion of the cushion 301 is provided with a pulley 63, a pulling rope 62 is arranged to pass through the pulley 63, one end of the pulling rope 62 is connected with the limiting rod 64, so that the other end of the pulling rope 62, namely one end close to the convex portion 61, is provided with a second inclined block 76, the rear side of the convex portion 61 is provided with a first inclined block 75, the weight of the limiting rod 64 is heavier than that of the second inclined block 76, and when the limiting rod 64 is abutted to the first through hole 57 without external force, the second inclined block 76 is positioned on one side of the first inclined block 75.

A side plate 77 is disposed on the backrest cushion 301, the side plate 77 is disposed on one side of a second inclined block 76 which naturally falls, when the protruding portion 61 is moved toward the inner side of the backrest cushion 301 by the back of the user, the first inclined block 75 moves toward the second inclined block 76, the second inclined block 76 moves downward under the cooperation of the inclined surfaces, the limiting rod 64 moves upward to stop the second elastic member 58, the inclined plate 52 rotates, and the third elastic member 60 moves toward the first through hole 57, that is, the limiting rod 64 is clamped above the second through hole 59.

Preferably, sliding rods 53 are arranged on two sides of the second plate 7, the sliding rods 53 slide between the placing member 6 and the handle 46, the sliding rods 53 are connected with the inclined plate 52, the sliding rods 53 slide on the inclined plate 52, the sliding rods 53 include sliding rods 72, sliding sleeves 73 and fourth elastic members 74, the sliding rods 72 slide on the sliding sleeves 73, the fourth elastic members 74 are arranged between the sliding rods 72 and the sliding sleeves 73, the sliding sleeves 73 are preferably quadrilateral, the groove bodies on the inclined plate 52 are matched with the sliding sleeves 73, and the sliding sleeves 73 can slide on the inclined plate 52 but cannot rotate.

A connecting rod 65 is arranged at one side of the first block 54, a control rod 66 is arranged above the handle 46 in a sliding manner, the control rod is connected with the connecting rod 65, when the control rod 66 is moved, the control rod 66 drives the first block 54 to move through the connecting rod 65, namely the inclined plate 52 moves towards one side of the back cushion 301 in the horizontal direction.

The seat plate 47 and the first plate 4 are disposed at the same position, but the difference is that the first plate 4 can move downward under the action of the first elastic element 5, in this embodiment, the lifting plate 48 overcomes the first elastic element 50 first and moves the second support rod 69 downward, the first plate 4 overcomes the first elastic element 5 downward again, and the vertical plates 68 of the lifting plate 48 are disposed at two sides of the first plate 4 and cooperate with the inclined plates 52 in the handle 46, so that the first elastic element 5 and the starting assembly 44 disposed at the bottom of the first plate 4 are not affected by itself.

The control component 11 and the reminding device 16 are integrated into an integrated frame, the function of the control component 11 and the mobile equipment 71 are mutually consistent, and the integrated frame is connected with the inclined plate 52.

The working principle is as follows: when a user sits on the lifting plate 48, the plurality of sets of lifting rods firstly overcome the first elastic component 50 to move downwards, that is, the second supporting rod 69 to move downwards, then according to the weight of the user, the first plate body 4 also overcomes the first elastic component 5 to move downwards integrally, the moving distances of the first plate body 4 are different, so that the first plate body 4 rotates the rotating plate 12 downwards against the acting force of the torsion spring, the pushing plate 13 moves the third plate body 10 to the outer side of the backrest 301 in the first empty groove 9, so that the second plate body 7 and the lumbar support 3 move away from the backrest 301 at the same time, the back of the user leans against the lug 61, the lug 61 moves the first inclined block 75 to the side of the side plate 77, that is, the second inclined block 76 moves downwards in the first inclined block 75, under the action of the traction rope 62, the limiting rod 64 moves upwards, and the second elastic component 58 is not limited, the first inclined block 75 moves outwards under the action of the second elastic component 58, that is, the vertical direction of the inclined plate 52 starts to move, the lumbar support 3 and the second plate body 7 rotate, the inclined plate 52 moves to the second support rod 69 of the lifting plate 48 closest to the back cushion 301, that is, the inclined plate 52 is limited by the second support rod 69, at this time, the angle and distance of the lumbar support 3 are matched with those of the user, when the user sits down for a long time, the strength of the user can press on the lumbar support 3, and when the waist is stressed greatly, the damage to the waist is serious, when the user moves the lumbar support 3 to the starting switch 41 against the second elastic component 8, the first electromagnet 31, the second electromagnet and the third electromagnet 39 are energized simultaneously to have magnetism, when the first electromagnet 31 has magnetism, the telescopic rod 30 moves towards the first electromagnet 31 in the second rod body 29 under the action of the first magnetic component 32, the second electromagnet on the third rod 37 attracts the second magnetic element in the fourth rod 38, and at the same time, the ratchet rack 19 overcomes the attraction between the third elastic element 22 and the folded edge 21, the limit of the spiral spring 26 is released, and because the ratchet 18 starts to rotate under the action of the spiral spring 26, the flywheel 35 rotates along with the ratchet rack, and the push rod 36 drives the top plate 43 to move the lumbar support 3 outwards repeatedly, so as to remind the user of great waist loss at this time.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.