CN221179940U - Mechanical stretching device for deep seat narrow-version functional sofa - Google Patents

Abstract

The utility model discloses a mechanical stretching device of a deep seat narrow-version functional sofa, which comprises two stretching mechanisms which are oppositely arranged, and a rear driving pipe, a middle torsion-resistant pipe and a front driving pipe which are respectively and fixedly connected between the rear parts, the middle parts and the front parts of the two stretching mechanisms, wherein a driving assembly is movably installed on the rear driving pipe, and the output end of the driving assembly is movably connected with the front driving pipe and is suitable for adjusting the stretching opening to the recycling closing by driving the stretching mechanisms through the front driving pipe. According to the utility model, the middle torsion-resistant pipe is additionally arranged to be connected with the middle part of the stretching mechanism, so that the front part, the middle part and the rear part of the whole device are connected in a reinforced way, the structural stability of the whole device is improved, the stable stretching adjustment of a functional sofa with wider seat depth and narrower seat length is realized, the application range is wider, and more comfortable experience is provided for users.

Description

Mechanical stretching device for deep seat narrow-version functional sofa

Technical Field

The utility model relates to the technical field of intelligent furniture, in particular to a mechanical stretching device for a deep seat narrow-version functional sofa.

Background

With the increasing productivity of society and the development of economic level, there is an increasing demand for fine living and an increasing demand for furniture, and at present, many pieces of furniture such as reclining chairs, sofas, etc. are equipped with mechanical stretching devices on which backrests, seat cushions, and leg rest plates are mounted, and electromechanical stretching devices are usually a combination of various mechanical connectors which are operable to provide various comfortable postures, and which are pushed to stretch or retract by a driving assembly.

The utility model of China with the authorized bulletin number of CN107125998B discloses a quick-mounting structure of a support of a sinking type mechanical stretching device of a functional sofa, which comprises a mounting support, a telescopic assembly, a backrest assembly and a main body, wherein the mounting support, the telescopic assembly and the backrest assembly are rotatably mounted on the main body, the mounting support comprises a cross beam and at least one mounting sheet, the cross beam comprises a side plate, the at least one mounting sheet is fixed on the side plate and is perpendicular to the side plate, at least one mounting sheet is provided with at least one fixing hole and at least one mounting hole, when a wooden frame is required to be mounted on the mounting support, the mounting support is only required to be turned over, the wooden frame is placed under the mounting support, the mounting support and the wooden frame are fixed by an electric drill through screws by mounting Kong Jineng, and at least one mounting sheet is fixed on the side plate, so that the mounting height is reduced, the height of the whole sofa and the rocking chair is reduced, and the comfort of a user is improved. However, the mechanical stretching device with the structure is limited by the influence of structural stability, so that the longitudinal depth is insufficient, if the seat width is directly lengthened, obvious shaking can occur in the process of opening or recovering the mechanical stretching device, the mechanical stretching device is easy to shake and deform, the function of a sofa is influenced, and the user experience is uncomfortable

Disclosure of utility model

The utility model aims to provide a mechanical stretching device for a deep seat narrow-version functional sofa, which aims at overcoming the defects of the prior art, can realize stable stretching adjustment of a functional sofa with wider seat depth and narrower seat length, has wider application range and provides more comfortable experience for users.

The technical scheme for realizing the purpose of the utility model is as follows:

The utility model provides a deep seat narrow version function sofa mechanical stretching device, includes two stretching mechanism that set up relatively and respectively fixed connection in the back drive pipe, middle torsion-resistant pipe and the preceding drive pipe between the rear portion, middle part and the front portion of two stretching mechanism, movable mounting has drive assembly on the back drive pipe, drive assembly's output and preceding drive pipe swing joint are suitable for and stretch to open to retrieving the regulation of closing through preceding drive pipe drive stretching mechanism.

Further, the drive assembly is centrally disposed on the rear drive tube.

Further, the middle part of the front driving tube is provided with a bending part protruding outwards, and the output end of the driving assembly is rotationally connected with the bending part.

Further, the rear driving pipe and the bending part are respectively fixedly provided with a first hinge part and a second hinge part, the driving assembly adopts an electric cylinder, the cylinder body of the electric cylinder is hinged to the first hinge part, and the output end of the electric cylinder is hinged to the second hinge part.

Further, the stretching mechanism comprises a connecting rod type transmission mechanism, a base mounting frame fixedly arranged, and a seat cushion mounting frame, a leg dragging mounting frame and a backrest mounting frame which are movably mounted on the base mounting frame through the connecting rod type transmission mechanism.

Further, the link type transmission mechanism comprises a backrest link assembly connected between the base mounting frame and the backrest mounting frame, a seat cushion link assembly connected between the base mounting frame and the seat cushion mounting frame, and a leg dragging link assembly connected between the seat cushion mounting frame and the leg dragging mounting frame, wherein the leg dragging link assembly is connected with the seat cushion link assembly.

Further, an elastic return mechanism is connected between the seat cushion link assembly and the backrest link assembly.

Further, a first limiting pin and a first limiting boss protruding outwards are arranged on the outer side of the seat cushion mounting frame and used for limiting the recovery and stretching limit positions of the seat cushion connecting rod assembly.

Further, the inner side of the backrest connecting rod assembly is provided with a second limiting boss protruding outwards and used for limiting the stretching limit position of the backrest mounting frame.

Further, the outer side and the inner side of the leg dragging connecting rod assembly are respectively provided with a second limiting pin for limiting the stretching limit position of the leg dragging installation frame; the outside of leg drags the mounting bracket is equipped with outside protruding third limit station for restrict the recovery extreme position of leg drags the mounting bracket.

By adopting the technical scheme, the utility model has the following beneficial effects:

(1) According to the utility model, the middle torsion-resistant pipe is additionally arranged to be connected with the middle part of the stretching mechanism, so that the front part, the middle part and the rear part of the whole device are connected in a reinforcing way, the structural stability of the whole device is improved, the stable stretching adjustment of a functional sofa with wider seat depth and narrower seat length is realized, the application range is wider, and more comfortable experience is provided for users.

(2) The driving assembly is centrally arranged in the rear driving pipe, so that the aim of uniform load is fulfilled, and stable operation is realized.

(3) The front driving pipe is provided with the bending part, so that the stability of the stretching mechanism in operation is further improved.

(4) The driving assembly of the utility model adopts an electric cylinder structure, has stable transmission and lower noise, and is convenient for realizing various morphological changes of the stretching device by precisely controlling the formation of the electric cylinder.

(5) The stretching mechanism is connected with the cushion, the leg drags and the backrest of the functional sofa through the cushion mounting frame, the leg drags mounting frame and the backrest mounting frame respectively, is convenient to assemble, and meanwhile adopts the connecting rod type transmission mechanism to realize the linkage of all the components, so that the structure is simple and the transmission is stable.

(6) According to the utility model, the elastic reset mechanism is connected between the seat cushion connecting rod assembly and the backrest connecting rod assembly, so that the elastic reset force is provided when the seat cushion connecting rod assembly is retracted, and the reliability of the action of the stretching device is further improved.

(7) According to the utility model, through the matched use of the plurality of limiting bosses and the limiting pins, the limitation of each state of the stretching device is realized, and the accurate and stable stay in various postures is realized.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings, in which:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a link transmission mechanism according to the present utility model;

FIG. 3 is a schematic view of the structure of the present utility model in the case of sitting posture;

Fig. 4 is a schematic view of the structure in the case of the lying posture of the present utility model.

The reference numerals in the drawings are:

The rear driving tube 1, the first hinging part 1-1, the middle torsion tube 2, the front driving tube 3, the bending part 3-1, the second hinging part 3-2, the driving component 4, the connecting rod type transmission mechanism 5, the first connecting rod 5-1, the second connecting rod 5-2, the third connecting rod 5-3, the fourth connecting rod 5-4, the fifth connecting rod 5-5, the sixth connecting rod 5-6, the seventh connecting rod 5-7, the eighth connecting rod 5-8, the ninth connecting rod 5-9, the tenth connecting rod 5-10, the eleventh connecting rod 5-11, the twelfth connecting rod 5-12, the thirteenth connecting rod 5-13, the fourteenth connecting rod 5-14, the fifteenth connecting rod 5-15, the sixteenth connecting rod 5-16, the base mounting frame 6, the seat cushion mounting frame 7, the seat cushion cross frame 7-1, the U-shaped frame 7-2, the leg dragging mounting frame 8, the first leg dragging mounting plate 8-1, the leg dragging connecting rod 8-2, the second leg dragging 8-3, the backrest mounting frame 9, the elastic reset mechanism 10, the first limit pin 11, the first limit boss 12, the second limit boss 13, the second limit boss 14 and the limit boss 15.

Detailed Description

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Example 1

The mechanical stretching device of the deep seat narrow function sofa shown in fig. 1-2 comprises a stretching mechanism, a rear driving tube 1, a middle torsion tube 2, a front driving tube 3 and a driving assembly 4. The extension device is provided with two extension devices and is oppositely arranged, the rear driving tube 1, the middle torsion-resistant tube 2 and the front driving tube 3 are respectively and fixedly connected to the rear part, the middle part and the front part of the two extension mechanisms, the driving assembly 4 is movably arranged on the rear driving tube, the output end of the driving assembly is movably connected with the front driving tube 3, and the extension mechanisms are driven by the front driving tube to carry out extension and opening to recovery and closing adjustment. The middle part of the extension mechanism is connected through the additionally arranged middle torsion tube 2, so that the reinforced connection of the front part, the middle part and the rear part of the whole device is realized, the structural stability of the whole device is improved, the stable extension adjustment of the functional sofa with wider seat depth and narrower seat length is realized, the application range is wider, and more comfortable experience is provided for users.

The drive assembly 4 is arranged on the rear drive pipe 3 in a centered manner, the purpose of uniform load is achieved, stable operation is achieved, the middle part of the front drive pipe 3 is provided with an outwards-protruding bending part 3-1, the middle part of the rear drive pipe 1 and the bending part 3-1 are respectively fixedly provided with a first hinge part 1-1 and a second hinge part 3-2, the drive assembly 4 adopts an electric cylinder, the cylinder body of the electric cylinder is hinged to the first hinge part 1-1, the output end is hinged to the second hinge part 3-2, and the stability of the stretching mechanism in operation is further improved by arranging the bending part 3-1.

The stretching mechanism comprises a connecting rod type transmission mechanism 5, a base installation frame 6, a seat cushion installation frame 7, a leg dragging installation frame 8 and a backrest installation frame 9, wherein the base installation frame 6 is fixedly arranged, and the seat cushion installation frame 7, the leg dragging installation frame 8 and the backrest installation frame 9 are movably installed on the base installation frame 6 through the connecting rod type transmission mechanism 5, so that linkage of all components is realized, the structure is concise, and the transmission is stable.

The seat cushion mounting frame 7 comprises a seat cushion transverse frame 7-1 and a U-shaped frame 7-2 fixedly mounted at the rear end of the transverse frame 7-1 through screws, and the leg dragging mounting frame 8 comprises a first leg dragging mounting plate 8-1, a leg dragging connecting rod 8-2 and a second leg dragging mounting plate 8-3 which are sequentially hinged. The two ends of the rear driving tube 1 are fixedly connected with the rear ends of the base mounting frames 6 on the two sides through bolts respectively, the connecting rod type transmission mechanism 5 comprises a first connecting rod 5-1, a second connecting rod 5-2 and a third connecting rod 5-3 which are respectively hinged on the base mounting frames 6 from back to front, the other end of the first connecting rod 5-1 is sequentially hinged with a fourth connecting rod 5-4 and a fifth connecting rod 5-5, the middle part of the fourth connecting rod 5-4 is hinged with the rear end of the U-shaped frame 7-2, and the other end of the fifth connecting rod 5-5 is hinged with the backrest mounting frame 9; a sixth connecting rod 5-6 and a seventh connecting rod 5-7 are hinged at two sides of the other end of the second connecting rod 5-2 in a staggered manner, the other end of the sixth connecting rod 5-6 is hinged with the other end of the third connecting rod 5-3, the other end of the seventh connecting rod 5-7 is sequentially hinged with an eighth connecting rod 5-8 and a ninth connecting rod 5-9, a tenth connecting rod 5-10 is hinged between the middle part of the seventh connecting rod 5-2 and the sixth connecting rod 5-6, an eleventh connecting rod 5-11 is hinged at the middle part of the eighth connecting rod 5-8, and the other ends of the eleventh connecting rod 5-11 and the ninth connecting rod 5-9 are both hinged with the outer side of the transverse frame 7-1; a twelfth connecting rod 5-12 is hinged between the middle part of the eleventh connecting rod 5-11 and the inner side of the transverse frame 7-1, a thirteenth connecting rod 5-13 and a fourteenth connecting rod 5-14 are hinged on the inner side of the front end of the transverse frame 7-1, one end of the thirteenth connecting rod 5-13 is hinged with the twelfth connecting rod 5-12, a fifteenth connecting rod 5-15 is hinged between the other end of the thirteenth connecting rod 5-14 and one end of the first leg dragging mounting plate 8-1, and a sixteenth connecting rod 5-16 is hinged between the other end of the fourteenth connecting rod 5-14 and the other end of the second leg dragging mounting plate 8-3. The two ends of the middle torsion-resistant pipe 2 are fixedly connected with the inner sides of the eighth connecting rods 5-8 on the two sides respectively, and the two ends of the front driving pipe 3 are fixedly connected with the fourteenth connecting rods 5-14 on the two sides respectively. The first connecting rod 5-1, the fourth connecting rod 5-4 and the fifth connecting rod 5-5 form a backrest connecting rod assembly, the thirteenth connecting rod 5-13, the fourteenth connecting rod 5-14, the fifteenth connecting rod 5-15 and the sixteenth connecting rod 5-16 form a leg drag connecting rod assembly, the rest connecting rods form a seat cushion connecting rod assembly, and the adjustment of the backrest mounting frame, the seat cushion mounting frame and the leg drag mounting frame is realized through the matching action of a plurality of groups of connecting rods.

In order to further improve the adjustment stability, the elastic restoring mechanism 10 is connected between the seat cushion connecting rod assembly and the backrest connecting rod assembly in the embodiment, that is, a spring structure is connected between the eighth connecting rod 5-8 and the first connecting rod 5-1, and when the seat cushion connecting rod assembly retracts, an elastic restoring force is provided, so that the reliability of the action of the stretching device is further improved. Meanwhile, a first limiting pin 11 and a first limiting boss 12 protruding outwards are arranged on the outer side of the seat cushion mounting frame and used for limiting the recovery and stretching limit positions of the seat cushion connecting rod assembly. The inner side of the backrest connecting rod assembly is provided with a second limiting boss 13 protruding outwards and used for limiting the stretching limit position of the backrest mounting frame. The outer side and the inner side of the leg dragging connecting rod assembly are respectively provided with a second limiting pin 14 for limiting the stretching limit position of the leg dragging installation frame; the outside of leg drags the mounting bracket is equipped with outside protruding third limit station 15 for the restriction leg drags the recovery extreme position of mounting bracket.

As shown in fig. 3, when the present embodiment is a sitting posture, the distance from the intersection point of the seat frame and the backrest to the mounting reference point of the apparatus is H1, the distance of H1 is not more than 80mm, the height from the intersection point of the seat frame and the backrest to the top end of the backrest is H2, the distance of H2 is between 200 and 300mm, the length from the center of the mounting hole at the top end of the backrest to the leg rest of the leg rest is X3, and the length of X3 is not less than 800mm.

As shown in fig. 4, when the present embodiment is in a lying position, the length from the highest riveting point of the backrest and the U-shaped frame to the forefront end of the seat frame is X2, the length distance of X2 is not less than 700mm, the length X1 from the riveting point to the forefront end of the leg rest is between 1000 mm and 1300 mm.

The whole mechanism adopts a connecting rod type transmission mode, a plurality of limit designs are added, the stretching device is accurate and stable in any posture, the whole sofa seat height can be reduced by 3cm, the sofa style is more concise and attractive, and the front driving tube adopts the design of the bent tube, so that the movable sofa is more stable in operation. The middle part of the middle torsion-resistant pipe connecting stretching mechanism is additionally arranged, so that the front, middle and rear parts of the whole device are connected in a strengthening way, the structural stability of the whole device is improved, the stable stretching adjustment of a functional sofa with wider seat depth and narrower seat length is realized, the application range is wider, more comfortable experience is provided for a user, the whole structure is stable, the overweight test of 160-200 KG can be born, and the standard of the armrest type maximum sofa can be realized.

While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.

Claims (10)

1. A deep seat narrow version function sofa mechanical stretching device which characterized in that: the device comprises two stretching mechanisms which are oppositely arranged, and a rear driving pipe, a middle torsion-resistant pipe and a front driving pipe which are respectively and fixedly connected between the rear parts, the middle parts and the front parts of the two stretching mechanisms, wherein a driving assembly is movably installed on the rear driving pipe, and the output end of the driving assembly is movably connected with the front driving pipe and is suitable for being used for stretching and opening to recycling and closing adjustment by driving the stretching mechanisms through the front driving pipe.

2. The deep seating narrowband functional sofa machine extension of claim 1 wherein: the drive assembly is centrally disposed on the rear drive tube.

3. The deep seating, narrow format functional sofa mechanical stretcher of claim 2, wherein: the middle part of the front driving tube is provided with a bending part protruding outwards, and the output end of the driving assembly is rotationally connected with the bending part.

4. A deep seating, narrow format functional sofa mechanical stretcher as defined in claim 3, wherein: the rear driving pipe and the bending part are respectively fixedly provided with a first hinge part and a second hinge part, the driving assembly adopts an electric cylinder, the cylinder body of the electric cylinder is hinged to the first hinge part, and the output end of the electric cylinder is hinged to the second hinge part.

5. The deep seating narrowband functional sofa machine extension of claim 1 wherein: the stretching mechanism comprises a connecting rod type transmission mechanism, a base mounting frame fixedly arranged, and a seat cushion mounting frame, a leg dragging mounting frame and a backrest mounting frame which are movably mounted on the base mounting frame through the connecting rod type transmission mechanism.

6. The deep seating narrowband feature sofa machine extension of claim 5 wherein: the connecting rod type transmission mechanism comprises a backrest connecting rod assembly connected between the base mounting frame and the backrest mounting frame, a seat cushion connecting rod assembly connected between the base mounting frame and the seat cushion mounting frame, and a leg dragging connecting rod assembly connected between the seat cushion mounting frame and the leg dragging mounting frame, wherein the leg dragging connecting rod assembly is connected with the seat cushion connecting rod assembly.

7. The deep seating narrowband functional sofa machine extension of claim 6 wherein: an elastic reset mechanism is connected between the seat cushion connecting rod assembly and the backrest connecting rod assembly.

8. The deep seating narrowband functional sofa machine extension of claim 6 wherein: the outside of the seat cushion mounting frame is provided with a first limiting pin and a first limiting boss protruding outwards and used for limiting the recovery and the stretching limit position of the seat cushion connecting rod assembly.

9. The deep seating narrowband functional sofa machine extension of claim 6 wherein: the inside of back link assembly is equipped with the second spacing boss of outside arch for the limit position of stretching of restriction back mounting bracket.

10. The deep seating narrowband functional sofa machine extension of claim 6 wherein: the outer side and the inner side of the leg dragging connecting rod assembly are respectively provided with a second limiting pin for limiting the stretching limit position of the leg dragging installation frame; the outside of leg drags the mounting bracket is equipped with outside protruding third limit station for restrict the recovery extreme position of leg drags the mounting bracket.