CN218419071U

CN218419071U - Tablet chair with adjustable backrest

Info

Publication number: CN218419071U
Application number: CN202222749244.2U
Authority: CN
Inventors: 邵瑞
Original assignee: Beijing Huayu Xinchuang Science And Education Equipment Co ltd
Current assignee: Beijing Huayu Xinchuang Science And Education Equipment Co ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-02-03
Anticipated expiration: 2032-10-18

Abstract

The utility model relates to a tablet chair with an adjustable backrest, which relates to the field of tablet chairs and comprises a cushion, wherein cushion support rods are symmetrically and fixedly arranged at the two sides of the bottom of the cushion, chair legs are fixedly arranged at the sides of the two cushion support rods far away from each other, and chair feet are fixedly arranged at the bottoms of the chair legs; two all articulated on the cushion bracing piece one end have the back of the chair bracing piece, two fixed mounting has the back of the chair on the back of the chair bracing piece, fixed mounting has the back of the chair to extend the mechanism on the back of the chair, two it has the handrail still to articulate on the one side that the back of the chair bracing piece kept away from each other, the handrail corresponds the one end of installing and keeping away from the chair foot at the chair leg. The chair has the effects of adjusting the angle and the length of the backrest of the chair and improving the use comfort of the chair.

Description

Tablet chair with adjustable backrest

Technical Field

The application relates to the field of tablet chairs, in particular to a tablet chair with an adjustable backrest.

Background

When a student in a general school has a noon break, the student sits on the chair with his lower body, sleeps with his head lying on the desk, and presses his hand, so that the cervical vertebra is damaged, qi and blood circulation of his head is affected, and the rest quality is affected.

In view of the above-mentioned related technologies, the inventor believes that the seat cushion and the seat back of the tablet chair at the present stage are of a fixed structure, the angle of the seat cushion and the seat back of the tablet chair cannot be changed, and meanwhile, the length of the seat back cannot be adjusted, so that the comfortable use length cannot be provided for students with different heights.

SUMMERY OF THE UTILITY MODEL

In order to adjust the angle and the length of the backrest of the tablet chair and improve the use comfort of the tablet chair, the application provides the tablet chair with the adjustable backrest.

The application provides a tablet chair with adjustable back adopts following technical scheme:

a tablet chair with an adjustable backrest comprises a cushion, wherein cushion supporting rods are symmetrically and fixedly arranged on two sides of the bottom of the cushion, chair legs are fixedly arranged on one sides, away from each other, of the two cushion supporting rods, and chair feet are fixedly arranged at the bottoms of the chair legs;

two all articulated on the cushion bracing piece one end have the back of the chair bracing piece, two fixed mounting has the back of the chair on the back of the chair bracing piece, fixed mounting has the back of the chair to extend the mechanism on the back of the chair, two it has the handrail still to articulate on the one side that the back of the chair bracing piece kept away from each other, the handrail corresponds the one end of installing and keeping away from the chair foot at the chair leg.

By adopting the technical scheme, the armrests are hinged with the chair back supporting rods, so that the angle of the chair back can be adjusted, the chair back extension mechanism is arranged, the length of the chair back can be adjusted, and the use comfort of the tablet chair can be improved by adjusting the chair back extension mechanism and adjusting the angle and the length of the backrest of the tablet chair.

Optionally, the chair back extension mechanism comprises an outer shell, the outer shell is fixedly installed on one side, close to the chair back support rod, of the chair back, an extension plate capable of moving up and down is sleeved in the outer shell, baffles are symmetrically arranged at the left end and the right end of the extension plate, the upper end of each baffle is fixedly connected with a first return spring, and one end, far away from the baffles, of each first return spring is fixedly connected with the outer shell;

a plurality of grooves are uniformly formed in the extension plate at the lower end of the baffle, a limiting plate is fixedly connected to the bottom of the extension plate, limiting rods are sleeved at two ends of the limiting plate, and two ends of each limiting rod are fixedly installed in the outer shell;

both ends fixed mounting has the sliding sleeve about the shell body, cup joint the pole that cup joints that can reciprocate in the sliding sleeve, cup joint pole upper end has cup jointed second reset spring, the one end that cup joints the pole and keeps away from second reset spring articulates there is the connecting rod, the one end that the connecting rod kept away from cup joint the pole articulates there is the joint pole, the joint pole slides and cup joints in the shell body, the joint pole is close to one of connecting rod and serves to cup joint third reset spring.

Through adopting above-mentioned technical scheme, the extension board slides from top to bottom in the shell, adjusts to suitable position, later adjusts the joint pole, makes joint pole and recess joint for the extension board rigidity improves back of the chair length, promotes user's use comfort.

Optionally, the two chair legs respectively comprise loop bars, the two loop bars are respectively fixedly mounted on the two chair legs, fixing holes are respectively formed in one ends of the two loop bars, which are far away from the chair legs, lifting rods are slidably arranged in the loop bars in a penetrating manner, and one ends of the lifting rods, which are far away from the loop bars, are connected with the armrests;

a plurality of positioning holes which are uniformly distributed are formed in one end, away from the handrail, of the lifting rod, a positioning rod penetrates through one of the positioning holes, and the positioning rod further penetrates through the fixing holes.

Through adopting above-mentioned technical scheme, set up the lifter slip cap and establish in the loop bar, realize lifter height adjustment, and then realize the height adjustment to the cushion, correspond simultaneously through the locating lever and supporting with locating hole and fixed block, realize the fixed to the lifter height, improve structural stability.

Optionally, a clamping groove is formed in the handrail, a plurality of clamping plates which are evenly distributed are fixedly mounted in the clamping groove, a clamping block is abutted to one of the clamping plates, and one end, far away from the clamping plate, of the clamping block is fixedly mounted on the lifting rod.

Through adopting above-mentioned technical scheme, set up the fixture block and slide in the draw-in groove, when the angle between handrail and the back of the chair, the fixture block butt is on the cardboard that corresponds, realizes angle control between handrail and the back of the chair, improves structural stability.

Optionally, a connecting rod is fixedly connected between the two chair legs.

Through adopting above-mentioned technical scheme, fixed connection connecting rod improves structural stability between two chair feet.

Optionally, both ends of the two chair legs are fixedly provided with non-slip pads.

By adopting the technical scheme, the tablet chair with the adjustable backrest is prevented from sliding in use, and the safety and the stability of the tablet chair with the adjustable backrest are improved.

Optionally, two fixedly connected with several evenly distributed's anchor strut between the cushion bracing piece.

Through adopting above-mentioned technical scheme, improve structural stability.

Optionally, the cushion with the bleeder vent of several evenly distributed has all been seted up on the back of the chair.

By adopting the technical scheme, the use comfort level of the tablet chair with the adjustable backrest is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the chair back extension mechanism is arranged to adjust the length of the chair back, and the use comfort of the tablet chair is improved by adjusting the chair back extension mechanism and adjusting the angle and the length of the backrest of the tablet chair;

2. the extension plate slides up and down in the outer shell and is adjusted to a proper position, and then the clamping rod is adjusted to be clamped with the groove, so that the position of the extension plate is fixed, the length of the chair back is improved, and the use comfort of a user is improved;

3. the lifting rod is arranged to be slidably sleeved in the sleeve rod, so that the height of the lifting rod is adjusted, the height of the cushion is adjusted, meanwhile, the positioning rod is correspondingly matched with the positioning hole and the fixing block, the height of the lifting rod is fixed, and the structural stability is improved.

Drawings

FIG. 1 is a schematic view of a first perspective structure according to an embodiment of the present application;

FIG. 2 is a second perspective view of an embodiment of the present application;

FIG. 3 is a schematic view of the internal structure of a leg and armrest of an embodiment of the present application;

fig. 4 is a structural schematic diagram of a chair back extension mechanism according to an embodiment of the present application.

Description of the reference numerals: 1. a cushion; 11. a cushion support bar; 12. a reinforcing rod; 2. a chair leg; 21. a lifting rod; 211. positioning holes; 22. a loop bar; 221. a fixing hole; 23. positioning a rod; 3. a chair back; 31. a chair back support bar; 4. a handrail; 41. a card slot; 42. clamping a plate; 43. a clamping block; 5. air holes are formed; 6. a chair leg; 61. a connecting rod; 62. a non-slip mat; 7. a chair back extension mechanism; 71. an outer housing; 72. an extension plate; 73. a baffle plate; 74. a first return spring; 75. a groove; 76. a limiting plate; 77. a limiting rod; 78. a sliding sleeve; 79. a sleeved rod; 710. a second return spring; 711. a connecting rod; 712. a clamping and connecting rod; 713. and a third return spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a tablet chair with an adjustable backrest.

Referring to fig. 1 and 2, the tablet chair with the adjustable backrest comprises a cushion 1, cushion support rods 11 are symmetrically and fixedly mounted on two sides of the bottom of the cushion 1, a plurality of reinforcing rods 12 are fixedly connected between the two cushion support rods 11 and evenly arranged, and the number of the reinforcing rods 12 is not less than three. Equal fixedly connected with chair leg 2 on the one side that two cushion bracing pieces 11 kept away from each other, 2 one ends of chair leg are connected with

handrail

4, and 2 other ends of chair leg fixed mounting are on chair foot 6, fixedly connected with connecting rod 61 between two chair feet 6, and the equal fixed mounting in two 2 both ends of chair leg has slipmat 62, and slipmat 62 is the rubber material. The ends, far away from the chair legs 2, of the two armrests 4 are hinged to the two chair back support rods 31 respectively, one ends of the two chair back support rods 31 are hinged to one ends of the two cushion support rods 11 respectively, the two chair back support rods 31 are symmetrically and fixedly installed at two ends of the bottom of the chair back 3, and the chair back extension mechanism 7 is fixedly installed at the bottom of the chair back 3.

Firstly, the angle between the seat cushion support rod 11 and the seat back support rod 31 is adjusted, the angle between the seat back 3 and the seat cushion 1 is further adjusted, meanwhile, the length of the seat back 3 is extended through the seat back extension mechanism 7, and the use comfort of the chair which is provided with the pedal storage box, can pull the armrest 4 and can lie in noon break is improved.

Referring to fig. 1 and 4, the chair back extension mechanism 7 includes an outer housing 71, the outer housing 71 is fixedly installed on one side of the chair back close to the chair back support rod, an extension plate 72 capable of moving up and down is sleeved in the outer housing 71, baffles 73 are symmetrically arranged at the left and right ends of the extension plate 72, a first return spring 74 is fixedly connected to the upper end of the baffle 73, one end of the first return spring 74, which is far away from the baffle 73, is fixedly connected to the outer housing 71, sliding sleeves 78 are fixedly installed at the left and right ends of the outer housing 71, a sleeve rod 79 capable of moving up and down is sleeved in the sliding sleeves 78, a second return spring 710 is sleeved at the upper end of the sleeve rod 79, a connecting rod 711 is hinged at one end of the sleeve rod 79, which is far away from the second return spring 710, a clamping rod 712 is hinged at one end of the connecting rod 711, the clamping rod 712 is slidably sleeved in the outer housing 71, a third return spring 713 is sleeved on one end of the clamping rod 712, a plurality of grooves 75 are uniformly arranged on the extension plate 72 at the lower end of the baffle 73, a limiting plate 76 is fixedly connected to the bottom of the extension plate 76, a limiting plate 76 is fixedly connected to the bottom of the outer housing 76, and two ends of the limiting plate 77 are fixedly installed in the outer housing 71.

When using back of the chair extension mechanism 7, under limiting

plate

76 and 77's limiting displacement, pulling extension plate 72, pulling sleeve rod 79 simultaneously, sleeve rod 79 drives joint rod 712 through connecting rod 711 and breaks away from recess 75, adjust extension plate 72 to suitable position, under second reset spring 710 and third reset spring 713's effect, joint rod 712 again with recess 75 joint, make extension plate 72 rigidity, make back of the chair 3 length to adjust, satisfy the back of the chair 3 length demands of student's difference, improve the comfort level of student when using the pedal storage tank can pull handrail 4 and can lie and take the noon break tablet chair.

Referring to fig. 1 and 3, a clamping groove 41 is formed in the armrest 4, a plurality of clamping plates 42 which are uniformly arranged are fixedly mounted in the clamping groove 41, one clamping plate 42 is abutted with a clamping block 43, and one end of the clamping block 43, which is far away from the clamping plate 42, is fixedly mounted on the chair leg 2.

After the angles of the chair back 3 and the seat cushion 1 are adjusted, the clamping block 43 is abutted to the clamping plate 42 with the corresponding angle, so that the armrest 4 is fixed with the lifting rod 21, the angle adjustment of the chair back 3 and the seat cushion 1 is completed, and the use comfort of the tablet chair with the pedal storage box, the armrest 4 and the noon break chair can be lain is improved.

Referring to fig. 1 and 3, each of the two legs 2 includes a lifting rod 21, one end of the lifting rod 21 is fixedly connected to a latch 43, one end of the lifting rod 21 far away from the latch 43 is slidably disposed on the loop bar 22, and the loop bar 22 is fixedly mounted on the chair leg 6. The lifting rod 21 is provided with a plurality of positioning holes 211 which are uniformly arranged. The end of the loop bar 22 far away from the chair leg 6 is provided with a fixing hole 221. The inner diameters of the positioning holes 211 are the same as the inner diameter of the fixing holes 221, one positioning rod 23 penetrates through one positioning hole 211, and the positioning rod 23 further penetrates through the fixing hole 221.

When the height of the seat cushion 1 needs to be adjusted, the positioning rod 23 is pulled out from the positioning hole 211 and the fixing hole 221, the height of the lifting rod 21 is adjusted, the positioning hole 211 and the fixing hole 221 with the corresponding heights are ensured to be located on the same axis, then the positioning rod 23 is arranged in the positioning hole 211 and the fixing hole 221 which are located on the same axis in a penetrating mode, the height adjustment of the seat cushion 1 is completed, and the use comfort level of the tablet chair with the adjustable backrest is improved.

The implementation principle of a tablet chair with an adjustable backrest in the embodiment of the application is as follows: the angle between the seat cushion support rod 11 and the seat back support rod 31 is adjusted, the angle between the seat back 3 and the seat cushion 1 is further adjusted, meanwhile, the seat back extension mechanism 7 extends the length of the seat back 3, and the use comfort of the chair with the pedal storage box, the pull armrests 4 and the recumbent noon break is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A tablet chair with an adjustable backrest is characterized in that: the chair comprises a cushion (1), cushion supporting rods (11) are symmetrically and fixedly arranged on two sides of the bottom of the cushion (1), chair legs (2) are fixedly arranged on one sides, far away from each other, of the two cushion supporting rods (11), and chair feet (6) are fixedly arranged at the bottoms of the chair legs (2);

two cushion bracing piece (11) serve all to articulate there are back of the chair bracing piece (31), two fixed mounting has back of the chair (3) on back of the chair bracing piece (31), fixed mounting has back of the chair extension mechanism (7) on back of the chair (3), two still articulate on one side that back of the chair bracing piece (31) kept away from each other has handrail (4), handrail (4) correspond to install the one end of keeping away from chair foot (6) in chair leg (2).

2. The tablet chair with adjustable backrest as claimed in claim 1, wherein: the chair back extension mechanism (7) comprises an outer shell (71), the outer shell (71) is fixedly installed on one side, close to a chair back support rod, of a chair back, an extension plate (72) capable of moving up and down is sleeved in the outer shell (71), baffle plates (73) are symmetrically arranged at the left end and the right end of the extension plate (72), the upper end of each baffle plate (73) is fixedly connected with a first return spring (74), and one end, far away from the baffle plates (73), of each first return spring (74) is fixedly connected with the outer shell (71);

a plurality of grooves (75) are uniformly formed in an extension plate (72) at the lower end of the baffle (73), a limiting plate (76) is fixedly connected to the bottom of the extension plate (72), limiting rods (77) are sleeved at two ends of the limiting plate (76), and two ends of each limiting rod (77) are fixedly installed in the outer shell (71);

both ends fixed mounting has sliding sleeve (78) about shell body (71), cup joint pole (79) that can reciprocate in sliding sleeve (78), cup joint pole (79) upper end has cup jointed second reset spring (710), the one end that second reset spring (710) were kept away from in cup joint pole (79) articulates there is connecting rod (711), the one end that cup joint pole (79) was kept away from in connecting rod (711) articulates there is joint pole (712), joint pole (712) slip cup joints in shell body (71), joint pole (712) are close to one of connecting rod (711) and are served and cup jointed third reset spring (713).

3. The tablet chair with adjustable backrest as claimed in claim 1, wherein: the two chair legs (2) respectively comprise loop bars (22), the two loop bars (22) are respectively and fixedly installed on the two chair feet (6), one ends, far away from the chair feet (6), of the two loop bars (22) are respectively provided with a fixing hole (221), lifting rods (21) penetrate through the loop bars (22) in a sliding mode, and one ends, far away from the loop bars (22), of the lifting rods (21) are connected with the armrests (4);

a plurality of positioning holes (211) which are uniformly distributed are formed in one end, far away from the handrail (4), of the lifting rod (21), a positioning rod (23) penetrates through one of the positioning holes (211), and the positioning rod (23) penetrates through a fixing hole (221).

4. A tablet chair with adjustable backrest according to claim 3, wherein: a clamping groove (41) is formed in the handrail (4), a plurality of clamping plates (42) which are uniformly distributed are fixedly mounted in the clamping groove (41), a clamping block (43) is abutted to one of the clamping plates (42), and one end, far away from the clamping plates (42), of the clamping block (43) is fixedly mounted on the lifting rod (21).

5. A tablet chair with adjustable backrest according to claim 3, wherein: a connecting rod (61) is fixedly connected between the two chair legs (6).

6. The tablet chair with adjustable backrest of claim 5, wherein: and anti-slip pads (62) are fixedly arranged at the two ends of the two chair legs (6).

7. The tablet chair with adjustable backrest of claim 1, wherein: two a plurality of reinforcing rods (12) which are uniformly distributed are fixedly connected between the cushion supporting rods (11).

8. The tablet chair with adjustable backrest as claimed in claim 1, wherein: the cushion (1) and the chair back (3) are provided with a plurality of air holes (5) which are uniformly distributed.