CN218922141U

CN218922141U - High-stability office chair

Info

Publication number: CN218922141U
Application number: CN202222621141.8U
Authority: CN
Inventors: 许惠阳; 叶贻灿
Original assignee: Fujian Hui'an Zhenhui Furniture Co ltd
Current assignee: Fujian Hui'an Zhenhui Furniture Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-04-28
Anticipated expiration: 2032-09-30

Abstract

The application relates to a highly stable office chair, which comprises rear legs and armrest beams; a metal fixing piece is arranged on one side of the armrest beam and the rear leg; the metal fixing piece comprises a first connecting piece and a second connecting piece, the first connecting piece is arranged on the handrail beam, the second connecting piece is arranged on the rear leg, the first connecting piece and the second connecting piece are integrally formed, the intersection point of the inner side edge of the first connecting piece and the inner side edge of the second connecting piece is a first intersection point, the metal fixing piece is provided with a first convex strip which is close to the first intersection point, the first convex strip extends to the first connecting piece and the second connecting piece respectively, the first convex strip is obliquely arranged, and the distance between the first convex strip and the first intersection point is gradually decreased from two ends to the middle. The application is through setting up the metal fixed plate that has first sand grip, strengthens the connection between handrail roof beam and the rear leg, has the effort that reduces the bolt between handrail roof beam and the rear leg, reduces single-point bolted connection fatigue damage's condition and takes place, improves the effect of the overall stability of office chair.

Description

High-stability office chair

Technical Field

The application relates to the field of office chairs, in particular to a highly stable office chair.

Background

The connection mode among the parts of the solid wood office chair is mainly single-point screw connection. The screw is directly beaten on the wood through the screw hole.

According to the specific use condition of the solid wood office chair, when the office chair is subjected to a large acting force, such as a depending force, the point type connection of each part of the office chair is easy to fatigue and damage, and the stability of the office chair is affected.

Disclosure of Invention

In order to improve the stability of a solid wood office chair, the application provides a high-stability office chair.

The application provides a high firm office chair adopts following technical scheme:

a highly stable office chair, comprising rear legs and armrest beams; a metal fixing piece is arranged on one side of the armrest beam and one side of the rear leg, and a plurality of mounting holes for screws to pass through are formed in the metal fixing piece; the metal fixing piece comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is arranged on the handrail beam, the second connecting piece is arranged on the rear leg, the first connecting piece and the second connecting piece are integrally formed, the intersection point of the inner side edge of the first connecting piece and the inner side edge of the second connecting piece is a first intersection point, the metal fixing piece is provided with a first convex strip close to the first intersection point, the first convex strip extends to the first connecting piece and the second connecting piece respectively, the first convex strip is obliquely arranged, and the distance between the first convex strip and the first intersection point is gradually decreased from two ends to the middle.

When a wearer leans back on the chair back backwards, the rear legs of the office chair have a tendency to rotate backwards and downwards under the action of external force, and single-point bolt connection among all parts of the solid wood office chair is easy to fatigue and damage, so that the stability of the office chair is affected.

Through adopting above-mentioned technical scheme, the effort between rear leg and the handrail roof beam can be shared to the metal fixed plate, reduces the effort to single-point bolt to reduce single-point bolt fatigue damage. The medial side of metal fixed plate mainly bears the pulling force effect, through setting up first sand grip, improves the inboard tensile strength of metal fixed plate, improves the stability of metal fixed plate operation, reduces the effort of external force to the bolt, improves the steadiness of office chair.

Optionally, the intersection point of the outer side edge of the first connecting piece and the outer side edge of the second connecting piece is a second intersection point, the metal fixing piece is provided with a second raised line close to the second intersection point, the second raised line is inclined, and the distance between the first raised line and the first intersection point is gradually decreased from two ends to the middle.

Through adopting above-mentioned technical scheme, when the person of dress leaned on the back backward, the lateral margin of metal mounting side mainly bears the pressure effect, through setting up the second sand grip, improves the compressive strength of the lateral margin of metal fixed plate side, increases the stability of metal mounting to improve the steadiness of office chair.

Optionally, the protruding heights of the first protruding strip and the second protruding strip increase from two ends to a middle position.

Through adopting above-mentioned technical scheme, increase first sand grip, second sand grip middle zone's tensile, compressive property, improve the stability of metal mounting.

Optionally, the position of the mounting hole of the metal fixing piece is inclined, and the inclination direction of the connecting line of the mounting Kong Zhongdian is consistent with the inclination direction of the first raised line.

By adopting the technical scheme, each screw is uniformly stressed, the occurrence of the condition that the cross screw is damaged by overlarge stress is reduced, and the stability of the office chair is improved.

Optionally, the metal fixing piece is provided with a reinforcing strip, one end of the reinforcing strip is fixedly connected with the middle position of the first connecting piece, and the other end of the reinforcing strip is fixedly connected with the middle position of the second connecting piece.

Through adopting above-mentioned technical scheme, the reinforcing strip that the slope set up shares the part pulling force of the inboard of metal mounting, further improves the stability of metal mounting, reduces the effort to the bolt.

Optionally, the outside of handrail roof beam with the rear leg has seted up the holding tank that holds the metal fastener.

Through adopting above-mentioned technical scheme, reduce bellied first sand grip and second sand grip and expose, reduce the user and touch exposed first sand grip or second sand grip, improve security performance. And the overall aesthetic degree of the office chair is improved.

Optionally, grooves for accommodating the first raised strips and the second raised strips are formed in the outer sides of the handrail beams and the rear legs.

Through adopting above-mentioned technical scheme, can set up first sand grip and second sand grip in handrail roof beam and rear leg, reduce the arch of metal mounting surface, improve security performance and whole pleasing to the eye degree.

Optionally, the office chair further comprises two symmetrically distributed front legs, a first support beam, a second support beam, a third support beam and a seat plate; the first support beam is arranged at the middle position of the front leg, the second support beam is arranged between the front leg and the rear leg, the third support beam is arranged between the two rear legs, the upper surfaces of the first support beam, the second support beam and the third support beam are all on the same plane, and the seat plate is arranged above the first support beam, the second support beam and the third support beam; a plurality of backup plates are arranged between the two rear legs, a plurality of side plates are arranged between the front legs and the rear legs, and a sponge buffer structure and a leather binding are sequentially arranged on the outer surfaces of the side plates, the backup plates and the seat plate.

By adopting the technical scheme, the contact area between the office chair and a user is increased, and the comfort level of the user is improved.

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

1. the metal fixing plate with the first raised strips is arranged, so that the connection between the armrest beam and the rear leg is reinforced, the acting force of bolts between the armrest beam and the rear leg is reduced, the occurrence of fatigue damage of single-point bolt connection is reduced, and the overall stability of the office chair is improved;

2. through offer in handrail roof beam and rear leg outside hold the holding tank of metal mounting reduces bellied first sand grip and second sand grip and exposes, reduces the user and runs into the possibility of exposed first sand grip or second sand grip, improves the security performance. And the overall aesthetic degree of the office chair is improved.

Drawings

Fig. 1 is an overall schematic view of the office chair of embodiment 1.

Fig. 2 is a schematic view showing the structure of the metal fixture in embodiment 1.

FIG. 3 is a cross-sectional view A-A of FIG. 2.

Fig. 4 is a schematic view showing a sponge cushion structure of an office chair according to embodiment 1.

Fig. 5 is a schematic view showing the structure of the reinforcing member in embodiment 2.

Reference numerals illustrate: 1. a rear leg; 2. a front leg; 3. a handrail beam; 4. a first support beam; 5. a second support beam; 6. a third support beam; 7. a seat plate; 8. a backup plate; 9. a side plate; 10. a metal fixing member; 11. a mounting hole; 12. a first protruding strip; 13. a second protruding strip; 14. reinforcing strips; 15. a receiving groove; 16. a sponge buffer structure; 17. a first connector; 18. a second connector; 19. a first intersection point; 20. a second intersection point; 21. and (5) a bolt.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a highly stable office chair. Referring to fig. 1, the highly stable office chair comprises two symmetrically distributed front legs 2, rear legs 1, armrest beams 3, a second support beam 5, and first 4, third 6 support beams (not labeled in the figures), and a seat plate 7.

The first support beam 4 is arranged in the middle of the front leg 2, the second support beam 5 is arranged between the front leg 2 and the rear leg 1, the third support beam 6 is arranged between the two rear legs 1, the upper surfaces of the first support beam 4, the second support beam 5 and the second support beam 5 are all on the same plane, and the seat plate 7 is arranged on the first support beam 4, the second support beam 5 and the third support beam 6; a plurality of backup plates 8 are arranged between the two rear legs 1, and a plurality of side plates 9 are arranged between the front legs 2 and the rear legs 1; the armrest beam 3 is arranged above the seat plate 7, one end of the armrest beam 3 is arranged on the front leg 2, and the other end of the armrest beam 3 is connected with the middle position of the rear leg 1.

The armrest beam 3 is connected with the rear leg 1 through a bolt 21. The bolts 21 penetrate the rear legs 1 and are connected to the armrest beams 3 by means of pre-perforated holes.

Referring to fig. 2, the outside of the armrest beam 3 and the rear leg 1 are on the same plane, and a metal fixing member 10 is arranged on the outside of the connection position of the armrest beam 3 and the rear leg 1, for reinforcing the connection between the armrest beam 3 and the rear leg 1 and bearing the tensile force therebetween. The acting force of the rear legs 1 on the bolts 21 is reduced, so that the fatigue damage of the single-point bolts 21 is reduced, and the stability of the office chair is improved.

The metal fixture 10 is provided with a number of mounting holes 11 through which screws pass. The lowest position of the metal fixture 10 is higher than the lowest position of the handrail beam 3. The metal fixing part 10 comprises a first connecting part 17 and a second connecting part 18, wherein the first connecting part 17 is arranged on the handrail beam 3, the second connecting part 18 is arranged on the rear leg 1, and the first connecting part 17 and the second connecting part 18 are integrally formed.

When a human body leans backward, the rear leg 1 tends to rotate backward and downward under the action of external force, thereby causing the metal fixing member 10, which is connected with the support beam, to be stressed by the rear leg 1. Specifically, the metal fastener 10 is pulled on the inside and compressed on the outside. In order to improve the tensile and compressive strength of the metal fixture 10 and to improve the stability of the metal fixture 10, the structure of the metal fixture 10 is further limited.

The intersection point of the inner side edge of the first connecting piece 17 and the inner side edge of the second connecting piece 18 of the metal fixing piece 10 is a first intersection point 19, the metal fixing piece 10 is convexly provided with a first protruding strip 12 which is close to the first intersection point 19, the first protruding strip 12 extends to the first connecting piece 17 and the second connecting piece 18 respectively, the first protruding strip 12 is obliquely arranged, and the distance between the first protruding strip 12 and the first intersection point 19 decreases from two ends to the middle. The first protruding strips 12 are used for improving the tensile property of the metal fixing member 10.

The intersection point of the outer side edge of the first connecting piece 17 and the outer side edge of the second connecting piece 18 is a second intersection point 20, the metal fixing piece 10 is convexly provided with a second convex strip 13 which is close to the second intersection point 20, the second convex strip 13 is inclined, and the distance between the first convex strip 12 and the first intersection point 19 decreases from two ends to the middle. The second protruding strips 13 are used for improving the compression resistance of the metal fixing member 10.

The cross-sectional shapes of the first and

second protrusions

12 and 13 may be arc-shaped protrusions or triangular protrusion structures. In this embodiment, an arc-shaped convex structure is adopted.

Referring to fig. 3, the protruding heights of the first protruding bars 12 and the second protruding bars 13 are increased from both ends to the middle position, so as to increase the tensile and compressive properties of the middle regions of the first protruding bars 12 and the second protruding bars 13, and improve the stability of the metal fixture 10.

In this embodiment, the outer sides of the handrail beam 3 and the rear leg 1 are provided with the accommodating grooves 15 for accommodating the metal fixing members 10, so that the first raised lines 12 and the second raised lines 13 are exposed, the exposed first raised lines 12 or second raised lines 13 are reduced to be touched by a user, and the safety performance is improved. And the overall aesthetic degree of the office chair is improved.

In other embodiments, the outside of the armrest beam 3 and the rear leg 1 may be provided with grooves for accommodating the first protruding bars 12 and the second protruding bars 13, and one side of the metal fixing plate with the first protruding bars 12 is disposed toward the armrest beam 3 and the rear leg 1, so that the first protruding bars 12 and the second protruding bars 13 are accommodated in the armrest beam 3 and the rear leg 1.

Referring to fig. 4, the outer surfaces of the side plate 9, the back plate 8 and the seat plate 7 of the office chair are sequentially provided with a sponge buffer structure 16 and a leather binding (not shown in the drawings). The contact area between the office chair and the user is improved, and the comfort level of the user is improved.

Example 2:

example 2 differs from example 1 in that:

referring to fig. 5, the metal fixing member is provided with a reinforcing bar 14, one end of the reinforcing bar 14 is fixedly connected with the middle position of the first connecting member 17, and the other end of the reinforcing bar 14 is fixedly connected with the middle position of the second connecting member 18. The obliquely arranged reinforcing strips 14 share part of the tension on the inner side of the metal fixing member, and further improve the stability of the metal fixing member 10.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A highly stable office chair, characterized in that: comprises a rear leg (1) and an armrest beam (3); a metal fixing piece (10) is arranged on one side of the handrail beam (3) and one side of the rear leg (1), and a plurality of mounting holes (11) for screws to pass through are formed in the metal fixing piece (10); the metal fixing piece (10) comprises a first connecting piece (17) and a second connecting piece (18), the first connecting piece (17) is arranged on the handrail beam (3), the second connecting piece (18) is arranged on the rear leg (1), the first connecting piece (17) and the second connecting piece (18) are integrally formed, the intersection point of the inner side edge of the first connecting piece (17) and the inner side edge of the second connecting piece (18) is a first intersection point (19), the metal fixing piece (10) is provided with a first raised line (12) close to the first intersection point (19), the first raised line (12) is respectively extended to the first connecting piece (17) and the second connecting piece (18), the first raised line (12) is obliquely arranged, and the distance between the first raised line (12) and the first intersection point (19) is gradually decreased from two ends to the middle.

2. The highly stable office chair of claim 1, wherein: the intersection point of the outer side edge of the first connecting piece (17) and the outer side edge of the second connecting piece (18) is a second intersection point (20), the metal fixing piece (10) is provided with a second raised line (13) close to the second intersection point (20), the second raised line (13) is inclined, and the distance between the first raised line (12) and the first intersection point (19) is gradually reduced from two ends to the middle.

3. The highly stable office chair of claim 2, wherein: the protruding heights of the first protruding strip (12) and the second protruding strip (13) are gradually increased from two ends to the middle position.

4. The highly stable office chair of claim 2, wherein: the position of the mounting hole (11) of the metal fixing piece (10) is obliquely arranged, and the oblique direction of the midpoint connecting line of the mounting hole (11) is consistent with the oblique direction of the first raised line (12).

5. The highly stable office chair of claim 2, wherein: the metal fixing piece (10) is provided with a reinforcing strip (14), one end of the reinforcing strip (14) is fixedly connected with the middle position of the first connecting piece (17), and the other end of the reinforcing strip (14) is fixedly connected with the middle position of the second connecting piece (18).

6. The highly stable office chair of claim 2, wherein: the outer sides of the handrail beams (3) and the rear legs (1) are provided with containing grooves (15) for containing the metal fixing pieces (10).

7. The highly stable office chair of claim 2, wherein: grooves for accommodating the first raised strips (12) and the second raised strips (13) are formed in the outer sides of the handrail beams (3) and the rear legs (1).

8. The highly stable office chair of claim 1, wherein: the seat plate also comprises two symmetrically distributed front legs (2), a first support beam (4), a second support beam (5), a third support beam (6) and a seat plate (7); the first support beam (4) is arranged at the middle position of the front leg (2), the second support beam (5) is arranged between the front leg (2) and the rear leg (1), the third support beam (6) is arranged between the two rear legs (1), the upper surfaces of the first support beam (4), the second support beam (5) and the third support beam (6) are all on the same plane, and the seat plate (7) is arranged above the first support beam (4), the second support beam (5) and the third support beam (6); be equipped with a plurality of backup plates (8) between two back leg (1), preceding leg (2) with be equipped with a plurality of curb plates (9) between back leg (1), curb plate (9), backup plate (8) with the surface of bedplate (7) is equipped with sponge buffer structure (16) and cortex bordure in proper order.