CN212345945U

CN212345945U - Office chair

Info

Publication number: CN212345945U
Application number: CN202020860832.1U
Authority: CN
Inventors: 许庆春; 陶存保
Original assignee: Hefei Xuanmei Furniture Co ltd
Current assignee: Hefei Xuanmei Furniture Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-01-15
Anticipated expiration: 2030-05-20

Abstract

The utility model provides an office chair, which comprises a cushion, one side of the cushion is provided with a rotatable backrest, the cushion is connected with the backrest through a support plate, the outer side of the backrest is provided with a plurality of guide rollers, both sides of the cushion are provided with rotatable armrests, the armrests are vertically arranged with the plane of the cushion through adjusting buttons, the adjusting buttons pass through the armrests through bolts and are arranged at the metal side edges of the cushion, a movable support frame is arranged at the rear part of the backrest, the support frame is used for supporting when the office chair is laid flat, one edge of the support frame is arranged on the backrest through a rotating shaft, and the other end of the; the utility model discloses keep the balance of whole office chair, the balance of office chair makes the flat that can be complete lie on office chair in addition after work, avoids lumbar vertebrae or caudal vertebra to produce and warp to cause the health uncomfortable, also can make and keep certain travelling comfort in the office environment, can obtain fine rest.

Description

Office chair

Technical Field

The utility model relates to an office furniture technical field especially relates to an office chair.

Background

Office chairs are an important component of office furniture, which has evolved from a fixed backrest in the past to a version that can now be laid down, can be normally seated or laid down for rest in office environment, but the existing office chair which can be laid down cannot realize that the backrest is parallel to the cushion, in this state, the center of gravity of the office chair can be changed, so that the center of gravity leans backwards when lying down and falls, therefore, the backrest of the current office chair rotates to the bottom and forms a certain included angle with the plane of the cushion, however, the existence of the included angle causes people to be uncomfortable to lie down, the spine is in a bent state, the spine or the caudal vertebra is uncomfortable after long-term use, is not good for health, therefore, a backrest which can be completely horizontally laid down is needed to ensure that the user can lie down for rest, and the structure which can make the whole body in a horizontal plane is the technical problem to be solved by the utility model.

SUMMERY OF THE UTILITY MODEL

The present invention aims to provide an office chair that overcomes or at least partially solves the above mentioned problems, in order to solve the problem that the backrest of the office chair cannot be completely laid flat.

In order to achieve the above object, the technical solution of the present invention is specifically realized as follows:

the utility model provides an office chair, which comprises a cushion, one side of cushion is provided with rotatable back, and the cushion passes through the backup pad with the back and is connected, the back outside is provided with a plurality of deflector rolls, and the backup pad is used for supporting the intensity of back when sitting upright, and the top fixed mounting of back has the headrest, and the cushion both sides all are provided with rotatable handrail, and the handrail passes through the adjusting knob and sets up perpendicularly with the cushion plane, and the adjusting knob passes the handrail through the bolt and installs the metal side at the cushion, and the support frame of activity is installed at the back rear, and the support frame is used for the support when office chair flattens, and a support frame limit is installed on the back through the pivot, and the support frame other end passes through the installation of magnet detachable, and the cushion below is provided with the supporting leg.

As a further proposal of the utility model, the support frame is arranged between the headrest and the guide roller.

As a further aspect of the present invention, the magnet is fixedly mounted on the backrest above the guide roller.

As a further aspect of the present invention, the weight of the support frame is greater than the adsorption force between the support frame and the magnet.

As a further proposal of the utility model, the included angle between the support frame and the ground is an acute angle, and the angle between the support frame and the backrest is larger than 90 degrees.

As a further aspect of the present invention, the support plate is an elastic metal plate structure, a portion of the support plate is inserted into the notch of the cushion, and another portion of the support plate is attached to the outside of the backrest.

As a further scheme of the utility model, the pivot cup joints on the axle sleeve, and the axle sleeve comprises a spacing groove and two limit rings, and wherein two limit rings set up respectively at the spacing groove both ends, and the breach radian of spacing groove is greater than 90 degrees.

As the utility model discloses further scheme, the knob upper end is provided with the screw thread post, and the cushion is installed on the top of screw thread post, and the cushion adopts stereoplasm rubber, and the screw thread post is installed with the metal screw hole screw-thread fit of cushion below.

The utility model provides an office chair, beneficial effect lies in: the utility model discloses a can be greater than the rotatory office chair of 90 degrees back, be provided with the support frame of activity at the rear of back, support frame activity one end supports with ground contact, keeps the balance of whole office chair, and the balance of office chair makes the flat lying that can be complete on office chair in addition after the work, avoids lumbar vertebrae or caudal vertebra to produce and warp to cause the health uncomfortable, also can make and keep certain travelling comfort in the office environment, can obtain fine rest.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a vertical three-dimensional structure of an office chair provided by an embodiment of the present invention.

Fig. 2 is a schematic view of a vertical front structure of an office chair provided by an embodiment of the present invention.

Fig. 3 is a schematic view of a horizontal front structure of an office chair provided by an embodiment of the present invention.

Fig. 4 is a schematic view of a three-dimensional structure of a shaft sleeve according to an embodiment of the present invention.

Fig. 5 is a schematic view of a mounting structure of a supporting plate according to an embodiment of the present invention.

In the figure: 1. a cushion; 2. supporting legs; 3. a backrest; 4. a handrail; 41. an adjusting knob; 5. a headrest; 6. A support frame; 61. a magnet; 7. a rotating shaft; 71. a limiting groove; 72. an edge ring; 8. a support plate; 81. a guide roller; 9. a knob; 91. a threaded post; 92. and a cushion block.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Referring to fig. 1-5, an office chair provided by an embodiment of the present invention includes a cushion 1, a backrest 3 capable of rotating 90 degrees is disposed on one side of the cushion 1, the cushion 1 is connected to the backrest 3 through a support plate 8, the support plate 8 is an elastic metal plate structure, a part of the support plate 8 is inserted into a notch of the cushion 1, another part of the support plate 8 is attached to the outer side of the backrest 3, a plurality of guide rollers 81 are disposed on the outer side of the backrest 3, the guide rollers 81 attach the support plate 8 to the backrest 3, the support plate 8 is used for supporting the strength of the backrest 3 when sitting, so as to well support the strength of the back of a human body, a headrest 5 is fixedly mounted on the top of the backrest 3, the headrest 5 adopts an arc structure, so as to well protect the cervical vertebrae, rotatable armrests 4 are disposed on both sides of the cushion 1, the armrests 4 are vertically disposed on the plane of the, the adjusting knob 41 passes through the armrest 4 through a bolt and is installed on the metal side of the seat cushion, when the angle of the armrest 4 needs to be adjusted, the adjusting knob 41 is rotated to loosen the position limitation of the adjusting knob 41 on the armrest 4, the armrest 4 is rotated by taking the adjusting knob 41 as a shaft, the angle is adjusted, and then the adjusting knob 41 is screwed.

Preferably, the deflector roll 81 top, the back outside of headrest 5 below is provided with support frame 6, support frame 6 upper end is through pivot 7 and back installation, the other end of support frame 6 is the expansion end, and the bottom of support frame 6 is the structure that steel etc. can adsorb with magnetic material, the below and the magnet 61 adsorption installation of support frame 6, magnet 61 fixed mounting is on back 3, and magnet 61 sets up the top at deflector roll 81, magnet 61 adsorbs with support frame 6 when back 3 adopts the sitting mode to use, thereby avoid one section of the activity of support frame 6 to rock and produce the abnormal sound.

Preferably, the upper end of the support plate 8 can be extended and contracted by the rotation of the guide roller 81 so as to accommodate the falling and standing of the backrest 3.

In order to better use the office chair, the weight of the support frame 6 is greater than the adsorption force between the support frame 6 and the magnet 61, so that the movable end of the support frame 6 can fall freely when the backrest 3 is put down, and the support frame 6 and the magnet 61 are automatically adsorbed when the backrest 3 is folded.

Preferably, the included angle between the support frame 6 and the ground is an acute angle, the rotation angle between the support frame 6 and the backrest 3 is larger than 90 degrees, namely, the position of the support frame 6 contacting with the ground is close to one end of the headrest 5, so that the support frame 6 can better support the backrest 3, the support frame 6 and the support legs 2 form a three-dimensional support, and the office chair has a good supporting effect.

Preferably, the supporting leg 2 is arranged under the seat cushion 1, the supporting leg 2 adopts a liftable structure, and the bottom is provided with a universal wheel convenient to move.

Preferably, the rotating shaft 7 is sleeved on the shaft sleeve, the shaft sleeve is composed of a limiting groove 71 and two side rings 72, wherein the two side rings 72 are respectively arranged at two ends of the limiting groove 71, the radian of a notch of the limiting groove 71 is greater than 90 degrees, the rotating angle of the support frame 6 can be greater than 90 degrees, the edges of the support frame 6 and the limiting groove 71 are mutually extruded to be limited, and the support frame 6 is guaranteed not to be excessively rotated to cause gravity center deviation.

Preferably, knob 9 is installed near back 3 one end in the bottom of cushion 1, and knob 9 upper end is provided with screw thread post 91, and cushion 92 is installed on screw thread post 91's top, and cushion 92 adopts stereoplasm rubber, can increase frictional force, keeps cushion 91 closely fixed with backup pad 8, and screw thread post 91 and the metal screw hole screw-thread fit installation of cushion 1 below make knob 9 have the stress point.

Preferably, the straight plates at the two ends of the supporting plate 8 are made of semi-flexible material, and can also be made of thin metal sheets.

The utility model discloses a theory of operation: when the office chair is in a sitting state, the knob 9 is screwed to the support plate 8, the backrest 3 has forward elastic force under the action of the support plate 8, a human body has high comfort when sitting, the backrest 3 is prevented from falling under the elastic effect of the support plate 8, so that the human body falls down, when the office chair needs to lie down, the knob 9 is loosened, the backrest 3 rotates downwards, the part of the elastic plate 8 in the cushion 1 moves into the cushion 1, the part of the elastic plate 8 in the guide roller 81 moves upwards along the guide roller 8, the length of the support plate 8 is shortened, the backrest 3 can be turned over by resisting the elastic force of the support plate 8, the movable end of the support frame 6 is opened downwards under the action of the gravity of the support plate 6 and is supported obliquely with the ground, the knob 9 is screwed at the moment, and the office chair can be used by lying down.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An office chair comprises a cushion (1), wherein one side of the cushion (1) is provided with a rotatable backrest (3), the cushion (1) is connected with the backrest (3) through a support plate (8), the office chair is characterized in that a plurality of guide rollers (81) are arranged on the outer side of the backrest (3), the support plate (8) is used for supporting the strength of the backrest (3) when the office chair is seated, a headrest (5) is fixedly arranged at the top of the backrest (3), rotatable armrests (4) are arranged on the two sides of the cushion (1), the armrests (4) are vertically arranged with the plane of the cushion (1) through adjusting buttons (41), the adjusting buttons (41) pass through the armrests (4) through bolts and are arranged on the metal side edge of the cushion, a movable support frame (6) is arranged at the rear of the backrest (3), the support frame (6) is used for supporting the office chair when the office chair is placed at ordinary times, one side of the support frame (6) is, the other end of the support frame (6) is detachably mounted through a magnet (61), the support legs (2) are arranged below the seat cushion (1), and the knob (9) used for fixing the support plate (8) is further arranged below the seat cushion (1).

2. An office chair as claimed in claim 1, characterised in that the support frame (6) is arranged between the headrest (5) and the guide roller (81).

3. An office chair as claimed in claim 1, characterised in that the magnet (61) is fixedly mounted on the backrest (3) above the guide roller (81).

4. An office chair as claimed in claim 1, characterised in that the weight of the support (6) is greater than the attraction between the support (6) and the magnet (61).

5. An office chair as claimed in claim 1, characterised in that the angle between the support (6) and the ground is acute and the angle of rotation of the support (6) and the backrest (3) is greater than 90 degrees.

6. An office chair as claimed in claim 1, characterised in that the support plate (8) is of a resilient sheet metal construction, one part of the support plate (8) being inserted into a slot mounted in the seat (1) and the other part of the support plate (8) being snugly mounted to the outside of the backrest (3).

7. The office chair according to claim 1, wherein the rotating shaft (7) is sleeved on a shaft sleeve, the shaft sleeve is composed of a limiting groove (71) and two side rings (72), wherein the two side rings (72) are respectively arranged at two ends of the limiting groove (71), and the radian of a gap of the limiting groove (71) is larger than 90 degrees.

8. The office chair as claimed in claim 1, wherein a threaded column (91) is arranged at the upper end of the knob (9), a cushion block (92) is arranged at the top end of the threaded column (91), the cushion block (92) is made of hard rubber, and the threaded column (91) is in threaded fit with a threaded metal hole below the cushion (1).