CN218738052U

CN218738052U - Backrest armrest linkage office chair

Info

Publication number: CN218738052U
Application number: CN202222774240.XU
Authority: CN
Inventors: 王喜永
Original assignee: Zhejiang Anji Hengchang Chair Industry Co ltd
Current assignee: Zhejiang Anji Hengchang Chair Industry Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-03-28
Anticipated expiration: 2032-10-21

Abstract

The utility model provides a back handrail linkage office chair relates to the technical field of back handrail linkage office chair, a back handrail linkage office chair, including the back of the chair with install the armrest at the back of the chair, the back of the chair rotates with the armrest to be connected, is equipped with the piece that resets that is used for armrest to reset between the back of the chair and the chair. According to the backrest armrest linkage office chair, the connecting structure is not arranged between the seat armrest and the seat cushion, so that the structure of the chair is simplified, and the moving space of the seat armrest is enlarged.

Description

Backrest armrest linkage office chair

Technical Field

The utility model relates to a technical field of back handrail linkage office chair particularly, relates to a back handrail linkage office chair.

Background

Chairs are common parts in people's lives. The existing chair is mostly provided with armrests for supporting the arms of a user, so that the comfort level of the user is improved.

The common armrests on both sides in the market are fixed on the seat cushion or the bracket and cannot move simultaneously along with the rotation of the backrest. A person sits on the chair with both hands resting on the chair armrest. When a user needs to lay down the backrest of the chair on the chair, the backrest can rotate backwards by a certain angle relative to the cushion, and when the human body moves backwards along with the backrest, the hands of the user slide backwards on the armrest surface. Since the armrests are fixed on the seat, the hands of a person slide on the top surfaces of the armrests to generate friction, and the comfort of the user is affected.

The sliding armrest device linked with the backrest and the leisure chair with the device as introduced in the Chinese patent CN201820795833.5 comprise an armrest fixing bracket, an armrest wood plate, a sliding guide pillar, a plastic fixing seat and a plastic shaft sleeve, wherein the sliding guide pillar is fixed on the armrest wood plate and is inserted in the plastic shaft sleeve in a sliding manner; the plastic shaft sleeve is rotationally connected with the spherical surface of the plastic fixing seat; one end of the handrail fixing support is fixedly connected with the plastic shaft sleeve. The patent has the advantages that: the handrail wood board can slide relative to the plastic shaft sleeve, so that the position of the handrail wood board can be changed as required, and the comfort level is improved.

However, when implementing the above technical solution, it is found that the above technical solution has at least the following problems to be improved: when the existing armrests move along with the chair back, the armrests are still connected with the seat cushion of the chair, so that the structure of the chair is complex.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a back handrail links office chair does not be equipped with connection structure between armrest and the seat cushion, has simplified the structure of chair, has enlarged armrest's activity space.

The embodiment of the utility model is realized like this:

the embodiment of the application provides a back handrail linkage office chair, including the back of the chair with install the armrest at the back of the chair, the back of the chair rotates with the armrest to be connected, is equipped with the piece that resets that is used for the armrest to reset between armrest and the back of the chair.

The seat armrests are directly arranged on the seat back, and when the seat back is adjusted, the seat armrests can move along with the seat back; the problem that the arm of a user can not reach the seat armrest due to the fact that the distance between the seat back and the seat armrest is increased when the seat back is adjusted is avoided; the friction between the chair armrests and the arms of a user is avoided when the chair back and the chair armrests are separated from each other, and the comfort of the chair is improved; the connecting structure is not arranged between the seat armrests and the seat cushion, so that the structure of the chair is simplified, and the moving space of the seat armrests is enlarged.

The seat armrest can comprise a rotating shaft structure, and the seat armrest is arranged at the seat back framework at the back side of the seat chair through the rotating shaft structure. The reset piece can be parts such as a reset elastic sheet, the reset piece can pull up the front end of the seat armrest to slightly lift up, the arm of a user can press down the seat armrest when the arm of the user is placed on the seat armrest, the reset piece applies a force opposite to the arm, and when the arm of the user slightly changes along with the sitting posture, the reset piece can enable the seat armrest to be abutted against the arm, so that the comfort of the seat is guaranteed.

The utility model discloses an in some embodiments, the piece that resets is equipped with elastic connecting piece, elastic connecting piece and installation boss fixed connection including the installation boss of locating armrest between installation boss and the seatback.

The elastic connecting piece can be a torsion spring and other parts, if the elastic connecting piece is a torsion spring, the torsion spring can be sleeved on the rotating shaft structure of the seat armrest, one end of the torsion spring is fixedly connected with the mounting boss, the other end of the torsion spring is abutted against the seat back, the torsion spring rotates and extrudes along with the mounting boss, and meanwhile, the torsion spring generates force opposite to the rotating direction, so that the seat armrest can be conveniently reset. The installation boss and the elastic connecting piece can be arranged on the outer side of the seat armrest, and the convenience of replacing the elastic connecting piece is improved.

In some embodiments of the present invention, the seat armrest is connected to the seat back in a longitudinally sliding manner. The height of the chair armrest can be conveniently adjusted during installation or use.

In some embodiments of the present invention, the seat back is provided with a longitudinal guide rail, the seat armrest is provided with a longitudinal slider slidably connected to the longitudinal guide rail, and the seat armrest is rotatably connected to the longitudinal slider.

The upper end of the longitudinal guide rail can be communicated with the outer side of the seat back, and the longitudinal sliding block and the seat armrests can be arranged on the seat back from the upper end of the longitudinal guide rail and can also be convenient for the longitudinal sliding block to longitudinally slide along the longitudinal guide rail. The specific longitudinal guide rail can be opened on the frameworks at two sides of the chair back, so that the structural strength of the longitudinal guide rail is ensured.

In some embodiments of the present invention, a longitudinal position-limiting structure is disposed between the seat back and the longitudinal slider.

The limiting structure can be a limiting cam and the like, so that the longitudinal sliding block and the seat armrest can be conveniently kept at the comfortable height of a user. The limiting cam can be rotatably arranged on the longitudinal sliding block, and when the limiting cam is required to be limited, the protruding part of the cam can be abutted against the seat back through the limiting cam, so that the longitudinal movement between the seat back and the longitudinal sliding block is limited.

In some embodiments of the present invention, the longitudinal limiting structure includes a plurality of longitudinal holes formed in the seat back, and the longitudinal limiting structure further includes a longitudinal limiting pin capable of penetrating through the longitudinal sliding block and being inserted into the longitudinal holes. When the seat armrest moves to the height comfortable for the user, the longitudinal limit pin can penetrate through the longitudinal sliding block and be inserted into the longitudinal opening, and therefore the longitudinal movement of the seat armrest and the longitudinal sliding block is limited.

In some embodiments of the present invention, an elastic member for preventing the longitudinal limit pin from falling off is disposed between the longitudinal limit pin and the longitudinal slider.

The elastic piece can be a structure such as a tension rubber band, one end of the elastic piece is fixed on the longitudinal sliding block, the other end of the elastic piece is fixed on the longitudinal limiting pin, and the elastic piece such as the tension rubber band can be elastically deformed to a certain degree after being subjected to a large force; the user applies a large force to draw the longitudinal limit pin out of the current longitudinal opening and plug the longitudinal limit pin into the other longitudinal opening. When taking place vibrations or vertical spacer pin receives less external force, vertical spacer pin probably has set up elastic component (like pulling force rubber band) because the trend that vertical slider outwards dropped is kept away from to vibrations production, and vertical spacer pin outwards drops and need additionally overcome the pulling force of elastic component, increases the degree of difficulty that vertical spacer pin dropped in this embodiment.

In some embodiments of the utility model, the elastic component is tension spring, and vertical spacer pin is located to the tension spring cover, and vertical spacer pin is equipped with spacing arch, tension spring's one end and spacing protruding butt, tension spring's the other end and vertical slider butt.

When the shock occurs, the longitudinal limiting pin possibly has a tendency of falling away from the longitudinal hole due to the shock, the longitudinal limiting pin falls outwards, the pulling force of the tension spring needs to be overcome, and the falling difficulty of the longitudinal limiting pin is increased.

In some embodiments of the present invention, a circumferential position-limiting member is disposed between the seat armrest and the longitudinal slider.

The circumferential limiting member may be a cam limiting structure, and the circumferential limiting member may enable the seat armrest to be maintained at an angle comfortable for a user. The limiting cam can be rotatably arranged on the longitudinal sliding block, and when the limiting cam is required to be limited, the protruding part of the cam can be abutted against the seat armrest through the limiting cam, so that the rotation between the seat armrest and the longitudinal sliding block is limited.

In some embodiments of the present invention, the circumferential position-limiting part includes a plurality of circumferential position-limiting holes provided in the seat armrest, and the circumferential position-limiting part further includes a circumferential position-limiting pin which can penetrate through the longitudinal sliding block and be inserted into the circumferential position-limiting holes. When the angle of the seat armrest needs to be kept, the circumferential limiting pin can penetrate through the longitudinal sliding block and be inserted into the circumferential limiting hole, the structure of the embodiment is simple, and the angle between the seat armrest and the seat back is fixed.

Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:

1. when the chair back is adjusted, the chair armrests can move along with the chair back; the problem that the arm of a user can not reach the seat armrest due to the fact that the distance between the seat back and the seat armrest is increased when the seat back is adjusted is avoided; and the friction between the chair armrests and the arms of a user is avoided when the chair back and the chair armrests are separated from each other, so that the comfort of the chair is improved.

2. The connecting structure is not arranged between the seat armrests and the seat cushion, so that the structure of the chair is simplified, and the moving space of the seat armrests is enlarged.

3. The reset piece can be a torsion spring and other parts, the reset piece can pull up the front ends of the seat armrests to slightly lift up, the arm of a user can press down the seat armrests when the arm of the user is placed on the seat armrests, the reset piece applies a force opposite to the arm, and when the arm of the user slightly changes along with the sitting posture, the reset piece can enable the seat armrests to be abutted against the arm, so that the comfort of the seat is guaranteed.

Drawings

Fig. 1 is a schematic view of the overall structure of an office chair with linked backrest and armrests according to the present invention;

fig. 2 is a schematic structural view of the backrest armrest linkage office chair according to the present invention, when the chair back rotates backward and presses down the chair armrest;

fig. 3 is a schematic structural view of a chair back, chair armrests and longitudinal sliding blocks of the office chair with linked backrest armrests;

fig. 4 is a schematic structural view of the backrest handrail linked office chair of the present invention, in which a longitudinal limit pin is engaged with a longitudinal hole;

fig. 5 is a schematic structural view of the elastic member and the limiting protrusion of the backrest handrail linked office chair of the present invention.

Icon: 1-a seat back, 101-a longitudinal guide rail, 102-a longitudinal hole, 2-a seat armrest, 201-a longitudinal sliding block, 202-a longitudinal limit pin, 221-an elastic part, 222-a limit bulge, 203-a circumferential limit pin, 231-a circumferential limit hole, 204-a reset part, 241-an installation boss and 242-an elastic connecting part.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 5, the present embodiment provides a backrest armrest linked office chair, which includes a chair back 1 and a chair armrest 2 installed on the chair back 1, wherein the chair back 1 is rotatably connected to the chair armrest 2, and a reset piece 204 for resetting the chair armrest 2 is disposed between the chair armrest 2 and the chair back 1.

In the embodiment, the seat arm rests 2 are directly mounted on the seat back 1, and when the seat back 1 is adjusted, the seat arm rests 2 can move together with the seat back 1; the problem that the arm of a user can not reach the seat armrest 2 due to the fact that the distance between the seat back 1 and the seat armrest 2 is increased when the seat back 1 is adjusted is avoided; the friction between the chair armrests 2 and the arms of a user is avoided when the chair back 1 and the chair armrests 2 are separated from each other, and the comfort of the chair is improved; the connection structure is not arranged between the seat armrests 2 and the seat cushion, so that the structure of the chair is simplified, and the movement space of the seat armrests 2 is enlarged.

The seat arm 2 may include a rotating shaft structure, and the seat arm 2 is installed at a seat back frame at the rear side of the seat back 1 through the rotating shaft structure. The reset piece 204 can be a reset elastic sheet or other parts, the reset piece 204 can pull up the front end of the seat armrest 2 to slightly lift up, the arm of the user can press down the seat armrest 2 when being placed on the seat armrest 2, the reset piece 204 applies a force opposite to the arm, and when the arm of the user slightly changes along with the sitting posture, the reset piece 204 can enable the seat armrest 2 to be abutted against the arm, so that the comfort of the seat is ensured.

In some embodiments of the present embodiment, the restoring member 204 includes a mounting boss 241 disposed on the seat armrest 2, an elastic connecting member 242 is disposed between the mounting boss 241 and the seat back 1, and the elastic connecting member 242 is fixedly connected to the mounting boss 241.

In the above embodiment, the elastic connection element 242 may be a torsion spring, etc., and if the elastic connection element 242 is a torsion spring, the torsion spring may be sleeved on the rotation shaft structure of the seat armrest 2, one end of the torsion spring is fixedly connected to the mounting boss 241, the other end of the torsion spring abuts against the seat back 1, the torsion spring rotates and extrudes along with the mounting boss 241, and meanwhile, the torsion spring generates a force opposite to the rotation direction, which facilitates the seat armrest 2 to reset. The mounting bosses 241 and the elastic connection member 242 may be provided at the outer side of the seat arm rest 2, which improves the convenience of replacing the elastic connection member 242.

In some embodiments of the present embodiment, the seat arm rest 2 and the seat back 1 are longitudinally slidably connected.

In the above embodiment, it is convenient to adjust the height of the armrest 2 at the time of installation or use.

In some embodiments of the present embodiment, the seat back 1 is provided with a longitudinal rail 101, the seat arm rest 2 is provided with a longitudinal slide block 201 slidably connected with the longitudinal rail 101, and the seat arm rest 2 is rotatably connected with the longitudinal slide block 201.

In the above embodiment, the seat armrest 2 may be mounted to the seat back 1 via the longitudinal rail 101, while the seat armrest 2 is rotatably connected with the longitudinal rail 101. The upper end of the longitudinal guide rail 101 can be communicated with the outer side of the seat back 1, and the longitudinal sliding block 201 and the seat armrests 2 can be installed on the seat back 1 from the upper end of the longitudinal guide rail 101, so that the longitudinal sliding block 201 can slide longitudinally along the longitudinal guide rail 101 conveniently. The specific longitudinal guide rail 101 can be opened on the frameworks at two sides of the seat back 1, so that the structural strength of the longitudinal guide rail 101 is ensured.

In some embodiments of the present embodiment, a longitudinal limit structure is provided between the seat back 1 and the longitudinal sliding block 201.

In the above embodiment, the limiting structure may be a limiting cam or the like, so that the longitudinal slider 201 and the seat arm rest 2 are maintained at a comfortable height for the user. The limiting cam can be rotatably arranged on the longitudinal sliding block 201, and when the limiting is needed, the limiting cam can be rotated to enable the protruding part of the cam to be abutted against the seat back 1, so that longitudinal movement between the seat back 1 and the longitudinal sliding block 201 is limited.

In some embodiments of the present embodiment, the longitudinal restraint structure includes a plurality of longitudinal openings 102 provided in the seat back 1, and the longitudinal restraint structure further includes a longitudinal restraint pin 202 capable of penetrating through the longitudinal slider 201 and inserting into the longitudinal openings 102.

In the above embodiment, when the armrest 2 is moved to a height comfortable for a user, the longitudinal stopper pin 202 may be inserted through the longitudinal slider 201 and into the longitudinal opening 102, thereby restricting the longitudinal movement of the armrest 2 and the longitudinal slider 201.

In some embodiments of the present embodiment, an elastic member 221 for preventing the longitudinal stopper pin 202 from falling off is disposed between the longitudinal stopper pin 202 and the longitudinal slider 201.

In the above embodiment, the elastic member 221 may be a structure such as a tension rubber band, one end of the elastic member 221 is fixed to the longitudinal sliding block 201, the other end of the elastic member 221 is fixed to the longitudinal stopper pin 202, and the elastic member 221 such as a tension rubber band can be elastically deformed to a certain extent after being subjected to a large force; the user applies a large force to withdraw the longitudinal restraining pin 202 from the current longitudinal opening 102 and to insert it into the other longitudinal opening 102. When a shock occurs or the longitudinal stopper pin 202 is subjected to a small external force, the longitudinal stopper pin 202 may have a tendency to fall away from the longitudinal slider 201 due to the shock, in this embodiment, the elastic member 221 (such as a tension rubber band) is disposed, and the falling of the longitudinal stopper pin 202 needs to overcome the tension of the elastic member 221, which increases the difficulty of falling of the longitudinal stopper pin 202.

In some embodiments of the present embodiment, the elastic member 221 is a tension spring, the tension spring is sleeved on the longitudinal stopper pin 202, the longitudinal stopper pin 202 is provided with a stopper protrusion 222, one end of the tension spring abuts against the stopper protrusion 222, and the other end of the tension spring abuts against the longitudinal slider 201.

In the above embodiment, when a shock occurs, the longitudinal restraining pin 202 may tend to fall away from the longitudinal opening 102 due to the shock, and the falling of the longitudinal restraining pin 202 needs to overcome the pulling force of the tension spring, which increases the difficulty of falling the longitudinal restraining pin 202.

In some embodiments of the present embodiment, a circumferential limit stop is provided between the armrest 2 and the longitudinal slider 201.

In the above embodiment, the circumferential limiting member may be a cam limiting structure, and the circumferential limiting member may maintain the armrest 2 at an angle comfortable for a user. The limiting cam is rotatably mounted on the longitudinal sliding block 201, and when the limiting is needed, the limiting cam can be rotated to enable the protruding part of the cam to be abutted against the seat armrest 2, so that the rotation between the seat armrest 2 and the longitudinal sliding block 201 is limited.

In some embodiments of the present embodiment, the circumferential limiting member includes a plurality of circumferential limiting holes 231 provided in the seat armrest 2, and the circumferential limiting member further includes a circumferential limiting pin 203 capable of penetrating through the longitudinal slider 201 and being inserted into the circumferential limiting holes 231.

In the above embodiment, when the angle of the seat arm rest 2 needs to be maintained, the circumferential limiting pin 203 may be inserted into the circumferential limiting hole 231 through the longitudinal sliding block 201, and this embodiment has a simple structure, and the angle between the seat arm rest 2 and the seat back 1 is fixed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a back handrail linkage office chair which characterized in that: the seat comprises a seat back (1) and seat armrests (2) arranged on the seat back (1), wherein the seat back (1) is rotatably connected with the seat armrests (2), and a resetting piece (204) for resetting the seat armrests (2) is arranged between the seat armrests (2) and the seat back (1).

2. The office chair with linked backrest and armrest as claimed in claim 1, wherein: the reset piece (204) comprises a mounting boss (241) arranged on the seat armrest (2), an elastic connecting piece (242) is arranged between the mounting boss (241) and the seat back (1), and the elastic connecting piece (242) is fixedly connected with the mounting boss (241).

3. The office chair with linked backrest and armrest as claimed in claim 1, wherein: the seat armrests (2) are longitudinally connected with the seat back (1) in a sliding manner.

4. A back-rest and armrest linked office chair as claimed in claim 3, wherein: the seat back (1) is provided with a longitudinal guide rail (101), the seat armrests (2) are provided with longitudinal sliding blocks (201) in sliding connection with the longitudinal guide rail (101), and the seat armrests (2) are rotationally connected with the longitudinal sliding blocks (201).

5. The office chair of claim 4, wherein: a longitudinal limiting structure is arranged between the seat back (1) and the longitudinal sliding block (201).

6. The office chair of claim 5, wherein: the longitudinal limiting structure comprises a plurality of longitudinal openings (102) formed in the seat back (1), and the longitudinal limiting structure further comprises a longitudinal limiting pin (202) capable of penetrating through the longitudinal sliding block (201) and being inserted into the longitudinal openings (102).

7. The office chair of claim 6, wherein: an elastic part (221) for preventing the longitudinal limiting pin (202) from falling off is arranged between the longitudinal limiting pin (202) and the longitudinal sliding block (201).

8. The office chair of claim 7, wherein: the elastic piece (221) is a tension spring, the tension spring is sleeved on the longitudinal limiting pin (202), the longitudinal limiting pin (202) is provided with a limiting protrusion (222), one end of the tension spring is abutted against the limiting protrusion (222), and the other end of the tension spring is abutted against the longitudinal sliding block (201).

9. The office chair of claim 4, wherein: a circumferential limiting piece is arranged between the seat armrest (2) and the longitudinal sliding block (201).

10. The office chair with linked backrest and armrest as claimed in claim 9, wherein: the circumferential limiting part comprises a plurality of circumferential limiting holes (231) arranged on the seat armrests (2), and the circumferential limiting part also comprises a circumferential limiting pin (203) which can penetrate through the longitudinal sliding block (201) and be inserted into the circumferential limiting holes (231).