CN212591204U

CN212591204U - Durable sofa stretching device

Info

Publication number: CN212591204U
Application number: CN202021166298.0U
Authority: CN
Inventors: 徐海峰
Original assignee: Jiangsu Shuyida Machinery Co ltd
Current assignee: Jiangsu Shuyida Machinery Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-02-26
Anticipated expiration: 2030-06-22

Abstract

The utility model discloses a durable type sofa stretching device, the on-line screen storage device comprises a base, the sofa seat is installed at the top of base, the inside of sofa seat is provided with the cavity, install extension mechanism on the inner wall of cavity, back adjusting part is installed at the top of sofa seat. The utility model discloses an extend the mechanism, it is rotatory to drive the threaded rod through first handle, make the threaded rod break away from with the sofa seat, remove to the outside through first pull ring pulling expansion plate, extend the length of sofa, make the sofa can use as the bed, through setting up back adjusting part, it is rotatory to drive the rolling disc through the second handle, it rotates to make rotatory pivot drive the back, it is spacing to carry out the rolling disc through the locating lever, convenient operation, the structure is fairly simple, the stationarity is relatively good, for passing through rivet and connecting rod design, avoid bringing great use hidden danger for the user, the durability is good, the service life of device is prolonged.

Description

Durable sofa stretching device

Technical Field

The utility model relates to a sofa technical field specifically is a durable type sofa extension device.

Background

The sofa is a common sofa in families, is sold on the market mostly to be this kind of sofa, and it has two strong points to support user's lumbar vertebrae and thoracic vertebra, can obtain the effect with the curved surface of body back cooperation. At present, the existing mechanical stretching switch device for the movable sofa is complex in structure, poor in stability and complex in assembly, and the stretching structure is designed through rivets and connecting rods, so that the whole stretching structure cannot normally work as long as one part of the stretching structure cannot normally work, great potential use hazards are brought to a user, the service life of the device is influenced, and therefore the durable sofa stretching device is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a durable type sofa extension device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a durable sofa stretching device comprises a base, wherein a sofa seat is installed at the top of the base, a cavity is arranged inside the sofa seat, an extending mechanism is installed on the inner wall of the cavity, and a backrest adjusting component is installed at the top of the sofa seat;

the extension mechanism comprises two sliding grooves which are respectively arranged at the top and the bottom of the inner wall of the cavity, a fixed rod is arranged on the inner wall of the sliding groove, the surface of the fixed rod is movably connected with a sliding block, one side of the sliding block, which is far away from the sliding groove, is provided with a telescopic plate, the left side of the telescopic plate is provided with a limit sleeve, the left side of the inner wall of the cavity is provided with a limit groove, the left side of the limit sleeve penetrates through the limit groove and extends into the limit groove, the outer surface of the limit sleeve is movably connected with the limit groove, the left side of the sofa seat is provided with a threaded rod, one end of the threaded rod, which is close to the telescopic plate, sequentially penetrates through the sofa seat and the limit sleeve and extends into the limit sleeve, the surface of the threaded rod is respectively in threaded connection with the sofa seat and the limit, one side of the expansion plate positioned in the fixed groove is provided with a connecting plate;

the backrest adjusting component comprises two fixing plates, the two fixing plates are respectively arranged on the front side and the rear side of the top of the sofa seat, a rotating shaft is arranged between the two fixing plates, the surface of the rotating shaft is provided with a backrest, a first bearing is arranged in a groove which is arranged on the front side of the fixing plate and is close to one side of the rotating shaft, the rear side of the first bearing is movably connected with the rotating shaft, a second bearing is arranged in a through groove of the fixing plate which is arranged on the rear side, the rear end of the rotating shaft sequentially penetrates through the second bearing and the fixing plate from front to back and extends to the outside of the fixing plate, one end of the rotating shaft which is arranged on the outside of the fixing plate is provided with a rotating disc, the surface of the rotating disc is provided with a fixing hole, one side, which is arranged on the rear side of the fixing plate and is close to the rotating disc, a positioning rod is arranged on the rear, the surface of the positioning rod is movably connected with the fixing hole and the limiting hole respectively.

Preferably, the bottom of the base is provided with a foot pad.

Preferably, the front side and the rear side of the top of the sofa seat are provided with armrests.

Preferably, a first handle is installed on the left side of the threaded rod, and a second handle is installed on the rear side of the rotating disc.

Preferably, a first pull ring is installed on the right side of the connecting plate, and a second pull ring is installed on the rear side of the positioning rod.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses an extend the mechanism, it is rotatory to drive the threaded rod through first handle, make the threaded rod break away from with the sofa seat, remove to the outside through first pull ring pulling expansion plate, extend the length of sofa, make the sofa can use as the bed, through setting up back adjusting part, it is rotatory to drive the rolling disc through the second handle, it rotates to make rotatory pivot drive the back, it is spacing to carry out the rolling disc through the locating lever, convenient operation, the structure is fairly simple, the stationarity is relatively good, for passing through rivet and connecting rod design, avoid bringing great use hidden danger for the user, the service life of device is prolonged.

2. The utility model discloses a set up the callus on the sole and played the effect of carrying out the shock attenuation buffering to the sofa, played the effect of convenient to use through setting up the handrail, played the effect of being convenient for to rotate the threaded rod through setting up the first in command, played the effect of the rotatory rolling disc of being convenient for through setting up the second in command, played the effect of the pulling connecting plate of being convenient for through setting up first pull ring, played the effect of the pulling locating lever of being convenient for through setting up the second pull ring.

Drawings

FIG. 1 is a sectional view of the front view of the present invention;

FIG. 2 is an enlarged view of a portion of A-A of FIG. 1 according to the present invention;

fig. 3 is a structural section view of the top view of the present invention;

fig. 4 is a partial enlarged view of B-B in fig. 3 according to the present invention.

In the figure: the multifunctional sofa comprises a base 1, a sofa seat 2, a cavity 3, an extension mechanism 4, a sliding chute 41, a fixing rod 42, a sliding block 43, a telescopic plate 44, a limiting sleeve 45, a limiting groove 46, a threaded rod 47, a fixing groove 48, a connecting plate 49, a backrest adjusting component 5, a fixing plate 51, a rotating shaft 52, a backrest 53, a first bearing 54, a second bearing 55, a rotating disc 56, a fixing hole 57, a limiting hole 58, a positioning rod 59, a foot pad 6, an armrest 7, a first handle 8, a second handle 9, a first pull ring 10 and a second pull ring 11.

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.

Referring to fig. 1-4, a durable sofa stretching device comprises a base 1, a foot pad 6 is installed at the bottom of the base 1, the foot pad 6 is arranged to play a role in damping and buffering a sofa, a sofa seat 2 is installed at the top of the base 1, armrests 7 are installed on the front side and the rear side of the top of the sofa seat 2, the armrests 7 are arranged to play a role in facilitating use, a cavity 3 is arranged inside the sofa seat 2, an extending mechanism 4 is installed on the inner wall of the cavity 3, and a backrest adjusting component 5 is installed at the top of the sofa seat 2.

The extending mechanism 4 comprises two sliding grooves 41, the two sliding grooves 41 are respectively arranged at the top and the bottom of the inner wall of the cavity 3, a fixed rod 42 is arranged on the inner wall of the sliding groove 41, the surface of the fixed rod 42 is movably connected with a sliding block 43, an expansion plate 44 is arranged at one side of the sliding block 43 far away from the sliding groove 41, a limiting sleeve 45 is arranged at the left side of the expansion plate 44, a limiting groove 46 is arranged at the left side of the inner wall of the cavity 3, the left side of the limiting sleeve 45 penetrates through the limiting groove 46 and extends into the limiting groove, the outer surface of the limiting sleeve 45 is movably connected with the limiting groove 46, a threaded rod 47 is arranged at the left side of the sofa seat 2, a first handle 8 is arranged at the left side of the threaded rod 47, the first handle 8 is arranged to facilitate rotating the threaded rod 47, one end of the threaded rod 47, which is close to the expansion plate 44, fixed slot 48 has been seted up on sofa seat 2's right side, and the right-hand member of expansion plate 44 runs through sofa seat 2 and extends to the inside of fixed slot 48, and connecting plate 49 is installed to one side of the expansion plate 44 that is located the inside fixed slot 48, and first pull ring 10 is installed on connecting plate 49's right side, has played the effect of the pulling connecting plate 49 of being convenient for through setting up first pull ring 10.

The backrest adjusting assembly 5 comprises two fixing plates 51, the two fixing plates 51 are respectively installed at the front side and the rear side of the top of the sofa seat 2, a rotating shaft 52 is arranged between the two fixing plates 51, a backrest 53 is installed on the surface of the rotating shaft 52, a first bearing 54 is installed in a groove of one side of the fixing plate 51 positioned at the front side and close to the rotating shaft 52, the rear side of the first bearing 54 is movably connected with the rotating shaft 52, a second bearing 55 is installed in a through groove of the fixing plate 51 positioned at the rear side, the rear end of the rotating shaft 52 sequentially penetrates through the second bearing 55 and the fixing plate 51 from front to back and extends to the outside of the fixing plate 51, a rotating disc 56 is installed at one end of the rotating shaft 52 positioned at the outside of the fixing plate 51, a second handle 9 is installed at the rear side of the rotating disc 56, the function of facilitating the rotation of the rotating disc 56 is achieved by the arrangement of, locating plate 51 that is located the rear side and the one side that is close to rotating disc 56 has seted up spacing hole 58, rotating disc 56's rear side is provided with locating lever 59, the one end that locating lever 59 is close to fixed plate 51 runs through fixed orifices 57 and spacing hole 58 in proper order and extends to the inside of spacing hole 58, locating lever 59's surface respectively with fixed orifices 57 and spacing hole 58 swing joint, second pull ring 11 is installed to locating lever 59's rear side, has played the effect of being convenient for spur locating lever 59 through setting up second pull ring 11.

The working principle is as follows: through setting up extension mechanism 4, it is rotatory to drive threaded rod 47 through the first in command 8, make threaded rod 47 break away from with sofa seat 2 and stop collar 45, move to the outside through first pull ring 10 pulling expansion plate 44, extend the length of sofa, make the sofa can use as the bed, through setting up back adjusting part 5, it is rotatory to drive rolling disc 56 through second in command 9, make rotatory pivot 52 drive back 53 and rotate, it is spacing to rolling disc 56 through locating lever 59, convenient operation, the structure is fairly simple, the stationarity is better, for through rivet and connecting rod design, avoid bringing great potential safety hazard for the user, the service life of device is prolonged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A durable sofa stretching device, comprising a base (1), characterized in that: the sofa seat (2) is installed at the top of the base (1), a cavity (3) is formed in the sofa seat (2), an extending mechanism (4) is installed on the inner wall of the cavity (3), and a backrest adjusting component (5) is installed at the top of the sofa seat (2);

the extension mechanism (4) comprises two sliding grooves (41), the two sliding grooves (41) are respectively arranged at the top and the bottom of the inner wall of the cavity (3), a fixing rod (42) is arranged on the inner wall of the sliding groove (41), a sliding block (43) is movably connected to the surface of the fixing rod (42), an expansion plate (44) is arranged on one side, away from the sliding groove (41), of the sliding block (43), a limiting sleeve (45) is arranged on the left side of the expansion plate (44), a limiting groove (46) is arranged on the left side of the inner wall of the cavity (3), the left side of the limiting sleeve (45) penetrates through the limiting groove (46) and extends to the inside of the limiting groove, the outer surface of the limiting sleeve (45) is movably connected with the limiting groove (46), a threaded rod (47) is arranged on the left side of the sofa seat (2), one end, close to the expansion plate (44), of the threaded rod (47) penetrates through the sofa seat (2) and, the surface of the threaded rod (47) is in threaded connection with the sofa seat (2) and the limiting sleeve (45) respectively, a fixing groove (48) is formed in the right side of the sofa seat (2), the right end of the expansion plate (44) penetrates through the sofa seat (2) and extends into the fixing groove (48), and a connecting plate (49) is mounted on one side of the expansion plate (44) located inside the fixing groove (48);

the backrest adjusting component (5) comprises two fixing plates (51), the two fixing plates (51) are respectively arranged on the front side and the rear side of the top of the sofa seat (2), a rotating shaft (52) is arranged between the two fixing plates (51), the surface of the rotating shaft (52) is provided with a backrest (53), a first bearing (54) is arranged in the fixing plate (51) positioned on the front side and a groove close to one side of the rotating shaft (52), the rear side of the first bearing (54) is movably connected with the rotating shaft (52), a second bearing (55) is arranged in a through groove of the fixing plate (51) positioned on the rear side, the rear end of the rotating shaft (52) sequentially penetrates through the second bearing (55) and the fixing plate (51) from front to back and extends to the outside of the fixing plate (51), and a rotating disc (56) is arranged at one end of the rotating shaft (52) positioned on the outside of the fixing plate, fixed orifices (57) have been seted up on the surface of rolling disc (56), and spacing hole (58) have been seted up to one side that is located fixed plate (51) of rear side and is close to rolling disc (56), the rear side of rolling disc (56) is provided with locating lever (59), the one end that locating lever (59) are close to fixed plate (51) runs through fixed orifices (57) and spacing hole (58) in proper order and extends to the inside in spacing hole (58), the surface of locating lever (59) respectively with fixed orifices (57) and spacing hole (58) swing joint.

2. The durable sofa stretching apparatus of claim 1, wherein: the bottom of the base (1) is provided with a foot pad (6).

3. The durable sofa stretching apparatus of claim 1, wherein: armrests (7) are mounted on the front side and the rear side of the top of the sofa seat (2).

4. The durable sofa stretching apparatus of claim 1, wherein: a first handle (8) is mounted on the left side of the threaded rod (47), and a second handle (9) is mounted on the rear side of the rotating disc (56).

5. The durable sofa stretching apparatus of claim 1, wherein: a first pull ring (10) is installed on the right side of the connecting plate (49), and a second pull ring (11) is installed on the rear side of the positioning rod (59).