CN217565434U - Sofa stretching device with backrest and sofa capable of being stretched independently - Google Patents

Abstract

The utility model discloses a sofa stretching device that back sofa can extend alone, the on-line screen storage device comprises a first base, the fixed expansion plate that is equipped with in upper end of first base, expansion plate upper end fixedly connected with second base, the upper end of second base is equipped with the sofa body, the equal fixedly connected with fixed case in one side of expansion plate, the upper end fixedly connected with card case of first base, the card incasement is equipped with chucking mechanism, two rotate between the fixed case and be connected with two symmetric distribution's ball screw rod, two equal threaded connection has the thread bush, two on the outer wall of ball screw rod the upper end of thread bush is rotated and is connected with and cuts the fork crane. The utility model discloses can enough highly adjust the position of sofa body, can adjust the back of sofa body alone again, and then increased the convenience that the user used the sofa body to increased user's use and experienced, and then be favorable to the use of coming into operation to the sofa.

Description

Sofa stretching device with backrest and sofa capable of being stretched independently

Technical Field

The utility model relates to a back sofa technical field specifically is sofa stretching device that back sofa can extend alone.

Background

The sofa is a foreign word and is formed according to the transliteration of English words, and is a multi-seat chair with soft cushions, a backrest chair with springs or thick foam plastics and the like, armrests are arranged on two sides of the chair, and the sofa is one type of soft furniture and can be a single seat or a plurality of seats. In people's daily life, the sofa has become a very general furniture, and relatively old wooden seat, current cloth or leather sofa can give other people more comfort, and the stretching device of sofa is installed on the sofa for adjust the state of sofa, make the more comfortable mechanical device of user.

But the sofa on the market at present has a single function, mostly has not the function of stretching, and application method is comparatively fixed, even there is the domestic sofa of function of stretching, it is also comparatively troublesome to stretch the process to use for the user and brought a great deal of inconvenience, influence user's use and experience, and then reduced the practicality of sofa, be unfavorable for the use of putting into operation of sofa.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sofa stretching device with a backrest and a sofa capable of being stretched independently, which solves the problems in the prior art.

In order to solve the technical problem, the utility model provides a following technical scheme: sofa stretching device that back sofa can extend alone, including first base, the fixed expansion plate that is equipped with a plurality of equidistance and distributes in the upper end of first base, expansion plate upper end fixedly connected with second base, the upper end of second base is equipped with the sofa body, wherein two the equal fixedly connected with fixed case in one side of expansion plate, the upper end fixedly connected with card case of first base, the card incasement is equipped with chucking mechanism, two rotate between the fixed case and be connected with the ball screw rod of two symmetric distributions, two the one end fixed connection of ball screw rod, two equal threaded connection has the thread bush on the outer wall of ball screw rod, two the upper end of thread bush is rotated and is connected with the scissors fork crane, one of them be equipped with drive mechanism in the fixed case, be equipped with adjustment mechanism in the second base.

In a preferred embodiment: adjustment mechanism is including the fixed hydraulic cylinder of locating in the second base, the first pivot of fixedly connected with on the inner wall of second base, it is connected with according to the board to rotate on the outer wall of first pivot, be equipped with the first contact and the second contact of two symmetric distributions in the second base respectively, one side fixedly connected with regulating plate of hydraulic cylinder, regulating plate and second base sliding connection, the upper end and the sofa body sliding connection of regulating plate, first pivot is equipped with first torsional spring with the junction according to the board, first contact and second contact are respectively through first wire and second wire and hydraulic cylinder electric connection.

In a preferred embodiment: cut one side and the fixed case swing joint of fork crane lower extreme, cut one side and the fixed case sliding connection of fork crane, cut fork crane upper end and second base sliding connection, through the setting of cutting the fork crane, both made things convenient for the regulation to sofa body height, can increase the supporting role to the sofa body again.

In a preferred embodiment: the transmission mechanism comprises a toothed plate which is connected in the fixed box in a sliding mode, the toothed plate is connected with a first gear in a meshed mode, the first gear is connected with a second gear in a meshed mode, the second gear is fixedly connected with one of the ball screw rods, a pedal plate is fixedly connected to one side of the toothed plate, and the length of the sofa body height adjusting device is increased through the arrangement of the first gear.

In a preferred embodiment: the telescopic plate comprises a sleeve and a sliding plate, the sliding plate is connected with the sleeve in a sliding mode, a spring is fixedly connected between the sliding plate and the inner wall of the sleeve, sliding holes are formed in the sliding plate and the sleeve, the pedal plate is connected with the sliding holes in a sliding mode, and the buffering performance of movement of the sofa body is improved through the arrangement of the spring.

In a preferred embodiment: the clamping mechanism comprises a plurality of second rotating shafts which are fixedly connected with the clamping box and distributed equidistantly, the outer wall of each second rotating shaft is connected with the clamping plate in a rotating mode, a second torsion spring is arranged at the joint of the clamping plate and the corresponding first rotating shaft, the clamping box is penetrated through one side of the pedal plate and is movably connected with the clamping box, and through the arrangement of the clamping plate and the second torsion spring, the pedal plate can be moved conveniently, and the supporting effect of the pedal plate can be increased.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

1. the utility model discloses a first base, the expansion plate, the second base, the sofa body, the fixed case, ball screw, the thread bush, cut the fork crane, hydraulic cylinder, first pivot, the regulating plate, the pinion rack, the setting of second gear and running-board, can enough highly adjust the position of sofa body, can adjust the back of sofa body alone again, and then the convenience that the user used the sofa body has been increased, thereby user's use experience has been increased, and then be favorable to the use of coming into operation to the sofa, again through pressing the board, the setting of first contact and second contact, the regulation to the back angle has been made things convenient for more.

2. The utility model discloses a setting of card case and cardboard has increased the supporting role to the running-board, and then the user can place the foot on the running-board and support, further increase user's travelling comfort, again through the setting of sleeve and slide, has both made things convenient for the regulation to the height of sofa body, can increase the support nature of sofa body again.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an enlarged schematic view of fig. 1 a according to the present invention;

FIG. 3 is a schematic view of the card box of the present invention;

fig. 4 is a schematic top view of the upper end of the first base of the present invention;

in the figure: 1. a first base; 2. a retractable plate; 3. a second base; 4. a sofa body; 5. a fixed box; 6. clamping the box; 7. a ball screw; 8. a threaded sleeve; 9. a scissor-fork type lifting frame; 10. a hydraulic cylinder; 11. a first rotating shaft; 12. pressing a plate; 13. a first contact; 14. a second contact; 15. an adjusting plate; 16. a toothed plate; 17. a second gear; 18. a foot pedal; 19. a sleeve; 20. a slide plate; 21. provided is a clamping plate.

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 and fig. 3 to 4, the present invention provides a technical solution: the sofa stretching device with the independently stretchable backrest sofa comprises a first base 1, a plurality of stretching plates 2 distributed at equal intervals are fixedly arranged at the upper end of the first base 1, a second base 3 is fixedly connected at the upper end of each stretching plate 2, a sofa body 4 is arranged at the upper end of each second base 3, a fixing box 5 is fixedly connected to one side of each stretching plate 2, a clamping box 6 is fixedly connected to the upper end of the first base 1, a clamping mechanism is arranged in each clamping box 6, two symmetrically distributed ball screws 7 are rotatably connected between the two fixing boxes 5, one ends of the two ball screws 7 are fixedly connected, threaded sleeves 8 are respectively and threadedly connected to the outer walls of the two ball screws 7, the upper ends of the two threaded sleeves 8 are rotatably connected with a scissor type lifting frame 9, one of the two fixing boxes 5 is internally provided with a transmission mechanism, one side of the lower end of the scissor type lifting frame 9 is movably connected with the fixing box 5, one side of the scissor type lifting frame 9 is slidably connected with the fixing box 5, the upper end of the scissor type lifting frame 9 is slidably connected with the second base 3, the lifting frame 9 is capable of conveniently adjusting the height of the scissor type lifting frame 4, the sofa body is capable of adjusting the sofa, the sofa body is capable of driving the first gear wheels 16 is capable of driving the first gear wheels and capable of driving the first gear wheels to be meshed with the first toothed plate 17, the first toothed plate 16 is connected with the second toothed plate 16 capable of driving the first toothed plate 16, the retractable plate 2 comprises a sleeve 19 and a sliding plate 20, the sliding plate 20 is slidably connected with the sleeve 19, a spring is fixedly connected between the sliding plate 20 and the inner wall of the sleeve 19, sliding holes are formed in the sliding plate 20 and the sleeve 19, the pedal plate 18 is slidably connected with the sliding holes, the buffering performance of movement of the sofa body 4 is improved through the arrangement of the spring, the clamping mechanism comprises a plurality of second rotating shafts which are fixedly connected with the card box 6 and distributed at equal intervals, a clamping plate 21 is rotatably connected to the outer wall of each second rotating shaft, a second torsion spring is arranged at the joint of the clamping plate 21 and the first rotating shaft, one side of the pedal plate 18 penetrates through the card box 6 and is movably connected with the card box 6, and through the arrangement of the clamping plate 21 and the second torsion spring, the movement of the pedal plate 18 is facilitated, and the supporting effect of the pedal plate 18 can be improved.

The utility model discloses a theory of operation: when the sofa is used, the position of the sofa body 4 can be moved by setting the rocking wheel at the bottom end of the sofa body 4, then when the sofa body 4 is used, a user lies on the sofa body 4, when the height of the sofa body 4 needs to be adjusted, the user steps on the pedal plate 18 downwards, the pedal plate 18 is driven to slide downwards in the fixing box 5 at the right end along with the downward movement of the pedal plate 18, the toothed plate 16 slides downwards to drive the first gear to rotate, and further drive the second gear 17 to rotate, the diameter of the second gear 17 is smaller than that of the first gear, so that the movement of the toothed plate 16 is prevented from being meshed with the second gear 17 to rotate, the rotation of the first gear is prevented, the rotation of the second gear 17 drives the ball screw 7 at the right end to rotate, and further drives the ball screw 7 at the left side to synchronously rotate, so as to drive the two threaded sleeves 8 to relatively move, the relative movement of the two threaded sleeves 8 further drives the scissor type 9 to extend, so as to drive the second base 3 to extend, so as to drive the sofa body 4 to rise, when the sofa body 4 needs to be adjusted downwards, the pedal plate 18 only needs to move upwards to move, so as to drive the pedal plate 18 to move upwards and further drive the foot lifting force of the lifting bracket 18 to move downwards, so as to support the pedal plate 18, when the foot plate 18 moves downwards, and the pedal plate 18 moves downwards, so that when the foot plate 18 moves, and the foot plate 21 can work, and the foot plate can support the foot plate 18 moves downwards, and the clamping plate can work, and the clamping plate 18 can be capable of the clamping plate 21 can move downwards, and the clamping plate can be used for the clamping plate can work.

Referring to fig. 1-2, the present invention provides a technical solution: sofa that back sofa can extend alone extends device, be equipped with adjustment mechanism in the second base 3, adjustment mechanism is including the fixed hydraulic cylinder 10 of locating in the second base 3, the first pivot 11 of fixedly connected with on the inner wall of second base 3, it is connected with according to board 12 to rotate on the outer wall of first pivot 11, be equipped with the first contact 13 and the second contact 14 of two symmetric distributions in the second base 3 respectively, one side fixedly connected with regulating plate 15 of hydraulic cylinder 10, regulating plate 15 and 3 sliding connection of second base, the upper end and the 4 sliding connection of sofa body of regulating plate 15, first pivot 11 is equipped with first torsional spring with the junction according to board 12, first contact 13 and second contact 14 are respectively through first wire and second wire and 10 electric connection of hydraulic cylinder.

The utility model discloses a theory of operation: when the backrest is required to rotate, when the backrest which is rotatably connected to one side of the sofa body 4 needs to rotate, the upper end of the pressing plate 12 is pressed, the upper end of the pressing plate 12 rotates, the pressing plate 12 can be contacted with the first contact 13 at the upper end, at the moment, the first lead generates electricity, the hydraulic cylinder 10 begins to shorten, the adjusting plate 15 is driven to slide rightwards, the backrest at the left end of the sofa body 4 can rotate upwards, then the pressing plate 12 is loosened, the pressing plate 12 returns to the original position under the action of the first torsion spring, at the moment, the upper end of the pressing plate 12 is separated from the first contact 13, the first lead loses electricity, the hydraulic cylinder 10 does not move any more, when the backrest needs to rotate downwards, the lower end of the pressing plate 12 is pressed, the pressing plate 12 is contacted with the second contact 14, at the moment, the second lead generates electricity, the hydraulic cylinder 10 begins to extend, the backrest is driven to rotate downwards, the pressing plate 12 is loosened again after the rotation is completed, the pressing plate 12 is separated from the second contact 14 in the same way, the second lead loses electricity, the hydraulic cylinder 10 stops working, and the backrest angle adjustment of the left side of the sofa body 4 is adjusted.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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 (6)

1. Sofa extension device with independently extendable backrest sofa, comprising a first base (1), characterized in that: the fixed expansion plate (2) that are equipped with a plurality of equidistance and distribute in upper end of first base (1), expansion plate (2) upper end fixedly connected with second base (3), the upper end of second base (3) is equipped with sofa body (4), wherein two equal fixedly connected with fixed box (5) in one side of expansion plate (2), the upper end fixedly connected with card case (6) of first base (1), be equipped with chucking mechanism in card case (6), two rotate between fixed box (5) and be connected with two symmetric distribution's ball screw rod (7), two the one end fixed connection of ball screw rod (7), two equal threaded connection has thread bush (8) on the outer wall of ball screw rod (7), two the upper end of thread bush (8) is rotated and is connected with and is cut fork crane (9), one of them be equipped with drive mechanism in fixed box (5), be equipped with adjustment mechanism in second base (3).

2. The sofa extension device with the backrest capable of being extended independently according to claim 1, wherein: adjustment mechanism is including fixed hydraulic cylinder (10) of locating in second base (3), the first pivot (11) of fixedly connected with on the inner wall of second base (3), it presses board (12) to rotate to be connected with on the outer wall of first pivot (11), be equipped with first contact (13) and the second contact (14) of two symmetric distributions in second base (3) respectively, one side fixedly connected with regulating plate (15) of hydraulic cylinder (10), regulating plate (15) and second base (3) sliding connection, the upper end and sofa body (4) sliding connection of regulating plate (15), first pivot (11) are equipped with first torsional spring with the junction according to board (12), first contact (13) and second contact (14) are respectively through first wire and second wire and hydraulic cylinder (10) electric connection.

3. The sofa extension device with the backrest capable of being extended independently according to claim 1, wherein: cut one side and fixed case (5) swing joint of fork crane (9) lower extreme, cut one side and fixed case (5) sliding connection of fork crane (9), cut fork crane (9) upper end and second base (3) sliding connection.

4. The sofa extension device with independently extendable back rests as claimed in claim 1, wherein: the transmission mechanism comprises a toothed plate (16) which is connected in one of the fixed boxes (5) in a sliding mode, the toothed plate (16) is connected with a first gear in a meshed mode, the first gear is connected with a second gear (17) in a meshed mode, the second gear (17) is fixedly connected with one of the ball screws (7), and a pedal plate (18) is fixedly connected to one side of the toothed plate (16).

5. The sofa extension device with the backrest capable of being extended independently according to claim 4, wherein: the telescopic plate (2) comprises a sleeve (19) and a sliding plate (20), the sliding plate (20) is in sliding connection with the sleeve (19), a spring is fixedly connected between the sliding plate (20) and the inner wall of the sleeve (19), sliding holes are formed in the sliding plate (20) and the sleeve (19), and the pedal plate (18) is in sliding connection with the sliding holes.

6. The sofa extension device with the backrest capable of being extended independently according to claim 5, wherein: the clamping mechanism comprises a plurality of second rotating shafts which are fixedly connected with the clamping box (6) and distributed at equal intervals, the outer wall of each second rotating shaft is rotatably connected with a clamping plate (21), a second torsion spring is arranged at the joint of each clamping plate (21) and the corresponding first rotating shaft, and one side of each pedal plate (18) penetrates through the clamping box (6) and is movably connected with the clamping box (6).

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