CN212995573U

CN212995573U - Sofa with adjustable backrest

Info

Publication number: CN212995573U
Application number: CN202021192976.0U
Authority: CN
Inventors: 李金朋
Original assignee: Jinjiang White Swan Furniture Manufacturing Co ltd
Current assignee: Jinjiang White Swan Furniture Manufacturing Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-04-20
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses an adjustable sofa of back belongs to field of furniture, including sofa seat, sofa back and sofa handrail, its characterized in that, sofa back is provided with the pivot with sofa handrail junction, be equipped with the spacing dish with sofa handrail swing joint in the sofa handrail, be fixed with the gag lever post on the sofa back, during the gag lever post embedding sofa handrail, the gag lever post is connected with the spacing dish, spacing dish sets up and is connected with the transmission interactive with the external world, makes the sofa back can rotate through the pivot that sets up between sofa back and sofa handrail to fix a position the sofa back through the gag lever post of fixing on the sofa back and the spacing dish in the sofa handrail, then use a series of simple and easy transmission to control stop gear, realize the regulation of sofa back.

Description

Sofa with adjustable backrest

Technical Field

The utility model discloses an adjustable sofa of back belongs to field of furniture.

Background

The "sofa" is a foreign word, which is transliterated according to the English word sofa. Is a multi-seat chair with soft cushions. The back-rest chair with spring or thick foamed plastic has armrests on two sides and is one kind of soft furniture. The origin of the sofa dates back to the ancient egypt of about 2000 b.c. but the soft package sofa with the real meaning appears from the end of the sixteen century to the beginning of the seventeen century.

The sofa generally comprises a backrest and armrests, and the backrest is arranged on the sofa so that a person can sit on the sofa more comfortably. However, when people often need to adjust the angle of the backrest during use, the fixed backrest is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide a sofa with an adjustable backrest.

The utility model discloses a following technical scheme realizes above-mentioned purpose, an adjustable sofa of back, including sofa seat sofa back and sofa handrail, its characterized in that, sofa back is provided with the pivot with sofa handrail junction, be equipped with the spacing dish with sofa handrail swing joint in the sofa handrail, be fixed with the gag lever post on the sofa back, during the gag lever post embedding sofa handrail, the gag lever post is connected with spacing dish, spacing dish sets up to be connected with external interactive transmission.

Through adopting above-mentioned technical scheme, the sofa back can be round the pivot angle regulation freely, adjust and carry on spacingly through the gag lever post that is fixed in on the sofa back and the spacing dish in the sofa handrail after the angle of wanting, spacing method is that the structure on the gag lever post through the embedding spacing dish limits the rotation of sofa back, be swing joint between spacing dish and the sofa handrail, can remove in the sofa handrail, can control spacing dish through connecting on spacing dish and can control with external interactive transmission, under transmission's control, spacing dish removes to be connected with the gag lever post and makes the sofa back resume rotatable state.

Preferably, the limiting disc is provided with a plurality of bosses, inclined planes and planes perpendicular to the limiting disc are arranged on the bosses along the circumferential direction, and gaps are formed between every two bosses.

Through adopting above-mentioned technical scheme, when the gag lever post fell on the boss, the gag lever post can be along the inclined plane in the clearance of slipping to the butt is on the plane, guarantees no matter which position on the spacing dish of gag lever post falls and can both accomplish spacingly.

Preferably, the limiting disc is provided with a guide pillar, a guide hole is formed in the sofa armrest, the guide pillar and the guide hole are in clearance fit, and a return spring is arranged in the guide hole.

Through adopting above-mentioned technical scheme, guide hole and guide pillar can play the guide effect to the motion of spacing dish to can provide power for reseing of spacing dish through reset spring, also enable the connection between spacing dish and gag lever post more stable.

Preferably, the sofa armrest is provided with a guide boss and a guide groove, the limiting disc is provided with a guide port and a guide rod, the guide boss is in sliding connection with the guide port, and the guide groove is in sliding connection with the guide rod.

By adopting the technical scheme, the movement direction of the limiting disc can be further restrained, the contact area between the limiting disc and the sofa armrest can be reduced, and the friction force is reduced.

Preferably, the transmission device comprises a top rod, a lever, a transmission rod, a fulcrum shaft and a bolt, the top rod is rotatably connected with the lever through the bolt, the top rod is in contact with the outside, the lever is rotatably connected with the sofa armrest through the fulcrum shaft arranged on the sofa armrest, the lever is rotatably connected with the transmission rod, and the transmission rod is rotatably connected with the limiting disc.

By adopting the technical scheme, after the ejector rod is pressed down, the lever can be driven by the ejector rod to rotate around the fulcrum shaft, the transmission rod connected to the other end of the lever is driven, the transmission rod can drive the limiting disc to move, and the transmission can be smoothly carried out due to the rotary connection between each transmission part.

Preferably, the sofa armrest is provided with a guide rail matched with the limiting rod, and the limiting rod penetrates through the guide rail and is connected with the limiting disc.

By adopting the technical scheme, the limiting rod can be guaranteed to move according to a limited track.

Preferably, the rotating shaft sleeve is provided with a torsion spring, one end of the torsion spring is connected to the sofa armrest, and the other end of the torsion spring is connected to the sofa backrest.

By adopting the technical scheme, the sofa backrest can automatically rebound, and the limiting rod can be more tightly abutted against the plane of the boss.

Preferably, a blocking piece is arranged in the sofa armrest, a guide shaft is arranged on the blocking piece, and the guide shaft is embedded into the guide rail and connected to the sofa backrest.

By adopting the technical scheme, the gap generated by the guide rail can be blocked, the guide rail is prevented from being inserted by fingers and the like to cause danger, the safety is improved, and the function of preventing foreign matter dust from entering the sofa armrest to influence the work of the internal device can be realized.

Preferably, a bearing matched with the rotating shaft is arranged in the sofa armrest.

Through adopting above-mentioned technical scheme, the bearing connection can make the rotation more smooth.

Compared with the prior art, the beneficial effects of the utility model are that: the sofa backrest can be adjusted in a rotating mode through a rotating shaft arranged between the sofa backrest and the sofa armrests, the sofa backrest is positioned through a limiting rod fixed on the sofa backrest and limiting discs in the sofa armrests, and a series of simple transmission devices are used for controlling a limiting mechanism.

Drawings

Fig. 1 is an external view of the present invention;

FIG. 2 is a schematic view of the internal mechanism of the present invention, showing the connection relationship of the whole internal structure;

FIG. 3 is a partially enlarged view of part A of the present invention, showing the connection relationship of the position-limiting mechanism;

fig. 4 is a top view of the internal mechanism of the present invention, showing the positions of the return spring, the plug pin and the fulcrum shaft;

FIG. 5 is a cross-sectional view of the C-C of the present invention, showing the connection relationship of the transmission device and the connection relationship of the limiting plate and the sofa armrest;

fig. 6 is a schematic view of the limiting plate of the present invention, showing the structure of the limiting plate;

FIG. 7 is a rear view of the present invention showing the connection between the backrest of the sofa and the stop rod;

FIG. 8 is a sectional view taken along the line G-G of the present invention, showing the positions of the torsion spring and the bearing, and the connection relationship between the shaft and the sofa armrest and the sofa backrest;

fig. 9 is a schematic view of the sofa with the back removed to show the position of the guide rail.

Reference numerals: 1. a sofa backrest; 2. a sofa armrest; 21. a guide hole; 22. a guide rail; 23. a guide boss; 24. a bearing; 25. a fulcrum shaft; 26. a guide groove; 3. a sofa seat; 4. a rotating shaft; 5. a limiting disc; 51. A guide post; 52. a boss; 53. a guide port; 54. a guide bar; 6. a limiting rod; 7. a transmission rod; 8. a lever; 9. a top rod; 10. a return spring; 11. a torsion spring; 12. a bolt; 13. a baffle plate; 131. and a guide shaft.

Detailed Description

In the following description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like refer to the orientation or position relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention. 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. 1-7, a sofa with adjustable backrest comprises a sofa backrest 1, a sofa armrest 2 and a sofa seat 3, wherein the sofa backrest 1 is rotatably connected with the sofa armrest 2 through a rotating shaft 4 and is matched with a bearing 24 in the sofa armrest 2, the rotating shaft 4 is sleeved with a torsion spring 11, one end of the torsion spring 11 is connected with the sofa armrest 2, and the other end is connected with the sofa backrest 1, so that the sofa backrest 1 can rotate and has a resetting effect.

The sofa backrest 1 is fixed with a limiting rod 6, the limiting rod 6 is embedded into the sofa armrest 2 through a guide rail 22 on the sofa armrest 2, a limiting disc 5 is arranged in the sofa armrest 2, a plurality of bosses 52 are distributed on the limiting disc 5 along the circumference, one side of each boss 52 is an inclined surface, the other side of each boss is a plane vertical to the limiting disc 5, a gap is arranged between every two adjacent bosses 52, the radial width of each boss 52 is matched with the width of the guide rail 22, a guide post 51 is arranged on the limiting disc 5, the guide post 51 is embedded into a guide hole 21 on the sofa armrest 2, a return spring 10 is arranged in the guide hole 21 and provides power for the return motion of the limiting disc 5, the structure ensures that the limiting rod 6 can be accurately embedded into the gap of the bosses 52, and can slide into the gap along the inclined surface under the combined action of the restoring force of the return spring 10 and the restoring force of the torsion spring 11 even if the limiting rod 6 is, the limiting effect is achieved, and the sofa backrest 1 is positioned.

Furthermore, the limiting disc 5 is provided with two guide ports 53 and a guide rod 54, the guide ports 53 are connected with the guide bosses 23 on the sofa armrest 2 in a sliding manner, the guide rod 54 is connected with the guide grooves 26 on the sofa armrest 2 in a sliding manner, so that the limiting disc 5 can slide back and forth in the sofa armrest 2, the contact area of the structure is small, so that the friction force applied to the limiting disc 5 is small, the ejector rod 9 is arranged in the sofa armrest 2, one end of the ejector rod 9 extends out of the sofa armrest 2 through a hole on the sofa armrest 2, so that a person can operate the ejector rod 9, the ejector rod 9 is connected with a lever 8 which is connected with the lever 8 in a rotating manner through a bolt 12, the lever 8 is connected with the sofa armrest 2 in a rotating manner through a fulcrum shaft 25 arranged in the sofa armrest 2, the lever 8 is connected with a transmission rod 7 in a rotating manner, the transmission rod 7 is connected with the limiting disc 5, the transmission rod 7 is further driven to pull the limiting disc 5 to move, so that the limiting rod 6 is separated from the limiting of the limiting disc 5, and the sofa backrest 1 can be rotated again.

The baffle plate 13 is arranged in the sofa armrest 2, the guide shaft 131 on the baffle plate 13 is embedded into the guide rail 22 and fixed on the sofa backrest 1, and the structure enables the gap generated by the guide rail 22 to be shielded, thereby preventing foreign matters and dust from entering the interior of the sofa armrest 2 to influence the operation of the mechanism and prolonging the service life.

To sum up, the adjustable sofa of back the utility model the working method do: when the backrest needs to be adjusted, the ejector rods 9 on two sides are pressed by two hands, the internal transmission device drives the limiting disc 5 to move, the limiting rod 6 is separated from the limiting disc 5 for limitation, at the moment, the sofa backrest 1 can rotate freely, the angle of the sofa backrest 1 is adjusted by the acting force of backward leaning of a person and the resilience force of the torsion spring 11, after the proper angle is adjusted, the pressed ejector rod 9 is loosened, the limiting disc 5 resets under the action of the reset spring 10, the limiting rod 6 is embedded into the gap of the limiting disc 5 again, the rotation of the sofa backrest 1 is limited, and the action of adjusting the sofa backrest 1 is completed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an adjustable sofa of back, includes sofa seat (3), sofa back (1) and sofa handrail (2), its characterized in that, sofa back (1) is provided with pivot (4) with sofa handrail (2) junction, be equipped with in sofa handrail (2) with sofa handrail (2) swing joint's spacing dish (5), be fixed with gag lever post (6) on sofa back (1), gag lever post (6) imbed in sofa handrail (2), gag lever post (6) are connected with spacing dish (5), spacing dish (5) set up be connected with external interactive transmission.

2. The sofa of claim 1, wherein the back rest is adjustable: the limiting disc (5) is provided with a plurality of bosses (52), inclined planes and planes perpendicular to the limiting disc (5) are arranged on the bosses (52) along the circumferential direction, and gaps are formed between every two bosses (52).

3. The sofa of claim 2, wherein the back rest is adjustable: the limiting disc (5) is provided with a guide post (51), a guide hole (21) is formed in the sofa armrest (2), the guide post (51) is in clearance fit with the guide hole (21), and a return spring (10) is arranged in the guide hole (21).

4. The sofa of claim 3, wherein the backrest is adjustable: the sofa armrest is characterized in that a guide boss (23) and a guide groove (26) are arranged on the sofa armrest (2), a guide opening (53) and a guide rod (54) are arranged on the limiting disc (5), the guide boss (23) is in sliding connection with the guide opening (53), and the guide groove (26) is in sliding connection with the guide rod (54).

5. The sofa of claim 4, wherein the backrest is adjustable: the transmission device comprises a push rod (9), a lever (8), a transmission rod (7), a fulcrum shaft (25) and a bolt (12), wherein the push rod (9) is rotatably connected with the lever (8) through the bolt (12), the push rod (9) is in contact with the outside, the lever (8) is rotatably connected with the sofa armrest (2) through the fulcrum shaft (25) arranged on the sofa armrest (2), the lever (8) is rotatably connected with the transmission rod (7), and the transmission rod (7) is rotatably connected with the limiting disc (5).

6. The sofa of claim 5, wherein the back rest is adjustable: the sofa armrest (2) is provided with a guide rail (22) matched with the limiting rod (6), and the limiting rod (6) penetrates through the guide rail (22) to be connected with the limiting disc (5).

7. The sofa of claim 6, wherein the back rest is adjustable: the pivot (4) cover has torsional spring (11), torsional spring (11) one end is connected in sofa handrail (2), and the other end connects in sofa back (1).

8. The sofa of claim 7, wherein the back rest is adjustable: a blocking piece (13) is arranged in the sofa armrest (2), a guide shaft (131) is arranged on the blocking piece (13), and the guide shaft (131) is embedded into the guide rail (22) and connected to the sofa backrest (1).

9. The sofa of claim 8, wherein the back rest is adjustable: and a bearing (24) matched with the rotating shaft (4) is arranged in the sofa armrest (2).