CN213282221U - Frame structure of multifunctional leisure chair - Google Patents

Abstract

The utility model discloses a multifunctional leisure chair frame structure, which comprises a back frame, a seat frame, a foot rest, a chair foot component and a bottom support seat connected and fixed on the chair foot component; the foot rest is in running fit with the seat frame, and a first link mechanism is arranged among the front end of the seat frame, the foot rest and the bottom support seat; a second link mechanism is arranged between the rear end of the seat frame and the back frame; a first telescopic device for controlling the first link mechanism is arranged between the seat frame and the bottom support seat, a second telescopic device for controlling the second link mechanism is arranged between the back frame and the seat frame, and the first telescopic device and the second telescopic device are respectively and independently controlled; the first telescopic device acts to enable the front end of the seat frame to upwarp and integrally move backwards, and meanwhile, the foot rest frame turns forwards around the seat frame to expand; the second telescopic device is used for enabling the back frame to tilt backwards relative to the seat frame and enabling the back frame to move forwards integrally; the utility model discloses a multi-functional leisure chaise longue frame construction through the flexible of first, second telescoping device of control, realizes the leisure chaise longue from position of sitting, leisure to the steady transform of the appearance of lying.

Description

Frame structure of multifunctional leisure chair

Technical Field

The utility model relates to a thing to sit on field, in particular to multi-functional leisure chair frame construction.

Background

The market for leisure chairs has developed rapidly in recent years, and leisure chairs have gradually moved into many people's offices, living rooms, and bedrooms. From the earliest leisure chairs with the single technology to the modern novel leisure chairs with ergonomics; from the beginning that a user loses the support for the waist of a human body when the user leans on the back, namely commonly called 'running waist', to the development of the existing 'seat-back linkage technology', the hip and the seat surface are relatively fixed in the process of leaning on the back of the user, and the back rubbing feeling is eliminated; and a leg rest component is additionally arranged on the leisure chair, so that the whole body can be supported when the user uses the chair, and the comfort of the leisure chair is further improved. While people enjoy the relaxing posture provided by the leisure chair, the demand for the leisure chair is gradually rising, and consumers have not satisfied the traditional leisure chair that adjusts the posture manually or by changing the center of gravity, which is not simple and comfortable enough.

Consumers only need to sit on the chair seat for a leisure chair, and then the call for the novel leisure chair with the backrest adjustable and the footrest foldable can be raised and retracted purely by touching the screen or pressing the electric button is higher and higher. Therefore, by implanting the motor in the leisure chair, it becomes a new direction for the development and improvement of the leisure chair. The multifunctional electric leisure chair has a wide application prospect, can realize stable conversion from sitting posture, leisure posture to lying posture, and meets various requirements of sitting posture, leisure posture, sleeping posture and the like. Compared with the traditional seat, the chair has greater advantages. When the multifunctional electric seat is designed, the method of human engineering, planar rod system kinematics and the like are combined, so that the comfort of the seat is higher. Is beneficial to the blood circulation of the body and protects the health of people at any time. But simultaneously, how to design can make the leisure chaise longue let the human body more comfortable in the state change process, need further optimization like the length that increases the bracket, raise the seat front end and realize the rest of maximum angle heeling back, keep bracket and seat frame simultaneous movement and effectively eliminate the back of the body feel of rubbing the back when hypsokinesis.

The chinese utility model of CN202010018854.8 discloses a chair with footrest, which comprises a footing, a fixed seat, a back frame, a seat frame, a footrest component, a first linkage frame and a second linkage frame, wherein the fixed seat is mounted on the footing, the first linkage frame is fixedly connected with the bottom end of the back frame or is integrally formed and rotatably mounted on the fixed seat; the second linkage frame is fixedly connected with the bottom surface of the chair seat frame or integrally formed and movably arranged on the fixed seat; the rotatable installation of footrest subassembly is on second linkage frame or seat frame, its characterized in that still includes: the first driving mechanism comprises a first electric push rod, a first linkage rod, a left set of first link mechanism, a right set of first link mechanism and a left set of fourth link mechanism and a right set of fourth link mechanism, the first linkage mechanism is arranged on the fixed seat, the first linkage frame and the second linkage frame, the fourth linkage mechanism is arranged on the second linkage frame and the fixed seat, two ends of the first linkage rod are fixedly connected with the rear half section of the first linkage mechanism or integrally formed, the front end of the first electric push rod is hinged with the fixed seat, the rear end of the first electric push rod is hinged with the first linkage rod, when the first electric push rod is extended, the first link mechanism and the fourth link mechanism drive the chair back frame to rotate upwards and simultaneously drive the chair seat frame to move forwards and downwards, and when the first electric push rod is shortened, the first connecting rod mechanism and the fourth connecting rod mechanism drive the chair back frame to rotate downwards and simultaneously drive the chair seat frame to move backwards and upwards; and the second driving mechanism is used for driving the footrest component to rotate so as to lift and put down the footrest component, extending the footrest component in the lifting process of the footrest component and shortening the footrest component in the putting down process of the footrest component. People can adjust the footrest and the chair back frame according to own requirements, so that the human body can be more deeply relaxed. Although the leisure chair can control the lifting and extending of the footrest through the second electric push rod, the length of the footrest is limited by the length of the seat frame and the ground because the second electric push rod can not control the seat frame, so that the footrest can not be designed to be longer; and first electric putter controls seat frame and the motion of back of the chair frame simultaneously, but the human body only need adjust its hypsokinesis to the back of the body frame sometimes to do not want to change the state of seat frame, so this utility model can not control seat frame and back of the body frame respectively alone.

Disclosure of Invention

The utility model overcomes exist among the above-mentioned prior art not enough, provide an easy operation, stability is good, accords with human engineering's multi-functional leisure chair frame construction, and the user only needs to be through controlling first, second telescoping device, can realize that the leisure chair from the position of sitting, leisure to the steady transform of the appearance of lying, satisfies multiple requirements such as seat, leisure, sleep.

The technical scheme of the utility model is realized like this:

a multifunctional leisure chair frame structure is characterized by comprising a back frame, a seat frame, a foot rest, a chair foot component and a bottom support seat which is connected and fixed on the chair foot component; the footrest is movably arranged at the front end of the seat frame and is in running fit with the seat frame, and a first link mechanism is arranged among the front end of the seat frame, the footrest and the bottom support seat; a second linkage mechanism is arranged between the rear end of the seat frame and the back frame; the seat frame is positioned above the bottom supporting seat and is in rotating sliding fit with the bottom supporting seat; a first telescopic device for controlling the first link mechanism is arranged between the seat frame and the bottom support seat, and a second telescopic device for controlling the second link mechanism is arranged between the back frame and the seat frame; the two ends of the first telescopic device are respectively hinged with the seat frame and the supporting seat, the two ends of the second telescopic device are respectively hinged with the back frame and the seat frame, and the first telescopic device and the second telescopic device are respectively and independently controlled; under the action of the first telescopic device, the front end of the seat frame tilts upwards and moves backwards integrally, and the foot rest turns forwards around the seat frame and extends forwards; under the action of the second telescopic device, the back frame tilts backwards relative to the seat frame and moves forwards integrally. The utility model discloses a multifunctional leisure chair frame structure, set up first, second telescoping device respectively between seat frame and bottom sprag seat, seat frame and back of the body frame, through the flexible of first, second telescoping device, make the seat frame can self-driven adjust make seat frame front end upwarp and the whole retrodisplacement make the length of putting the foot rest can correspond the extension, the foot rest follows the seat frame upset and expandes the putting that satisfies the human foot; and the backrest tilts backwards and moves forwards integrally to eliminate the feeling of rubbing the back.

Preferably, the first link mechanism comprises a first rocker and a second rocker, two ends of the first rocker are respectively hinged with the front part of the seat frame and the bottom supporting seat, and two ends of the second rocker are respectively hinged with the foot rest and the bottom supporting seat; a four-link mechanism is formed among the seat frame, the first rocker, the second rocker and the foot rest; the first link mechanism deforms under the action of the first telescopic device. The four-bar linkage mechanism is formed among the seat frame, the foot rest and the first and second rocking bars, so that linkage can be formed between the seat frame and the foot rest, and the structure is simple and ingenious.

Preferably, the hinge point of the first rocker and the bottom support seat and the hinge point of the second rocker and the bottom support seat are located at the same position, and the hinge point of the second rocker and the foot rest and the rotation connection point of the foot rest and the seat frame are arranged in a staggered manner.

Preferably, the second linkage mechanism comprises a first guide rod and a second guide rod, a rotating support part is arranged at the lower end of the back frame, two ends of the first guide rod and the second guide rod are respectively hinged with the rotating support part and the seat frame, the rotating support part, the first guide rod and the second guide rod form a four-linkage mechanism with the seat frame, and the second linkage mechanism deforms under the action of the second telescopic device. The back frame moves forwards while inclining backwards through the simple four-bar mechanism, and the back rubbing feeling of a human body can be effectively eliminated when the back frame is used.

Preferably, the footrest comprises a first footrest frame and a second footrest frame which are in sliding fit, and the first footrest frame is rotatably connected with the front end of the seat frame; and a telescopic device is arranged between the first footrest and the second footrest, and the second footrest slides along the first footrest to expand and contract under the action of the telescopic device in the rotating process of the first footrest around the seat frame. When the first foot rest rotates around the seat frame through the arrangement of the telescopic device, the second foot rest is unfolded or contracted, and the turning and the unfolding of the foot rest are simultaneously carried out.

Preferably, the telescopic device comprises a universal joint connecting rod, a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are in running fit; the first connecting rod and the first footrest, and the second connecting rod and the second footrest are in running fit respectively; the two ends of the universal joint connecting rod are respectively connected to the first connecting rod and the seat frame, and the universal joint connecting rod and the first connecting rod and the universal joint connecting rod and the seat frame are respectively in rotating swing fit. Through setting up the universal joint connecting rod for can carry out the rotation of multi-angle better at the certain extent between universal joint connecting rod and first connecting rod and the seat frame.

Preferably, the bottom support seat comprises a support bottom plate fixedly connected with the chair leg assembly and support side plates connected to two sides of the support bottom plate, a rotating slip mechanism is arranged between the rear end of the seat frame and the rear ends of the support side plates, the rotating slip mechanism comprises a rotating slider and a guide rod, the guide rod is in sliding fit with the rotating slider, the rotating slider is in rotating fit with the rear ends of the support side plates through a rotating shaft, and two ends of the guide rod are fixedly connected to the seat frame. Through setting up the rotation glide machanism for satisfy simultaneously and sit rotatable and slip between frame and the supporting seat, reduce too much coupling mechanism's design.

Preferably, the supporting side plates are formed by extending along two sides of the supporting bottom plate towards the oblique front and upper direction.

Preferably, the first and second telescopic devices adopt electric push rods; the leisure chair is in a normal sitting posture state, and the first and second telescopic devices are in an extension state; when the leisure chair is in a leaning state, the first and second telescopic devices are in a contraction state. The electric push rod is adopted, so that the human body only needs to be controlled remotely, and the use is simple.

A control method of a multifunctional leisure chair comprises the steps that a first telescopic device is controlled to be contracted, a first link mechanism deforms, a seat frame is stressed to drive a first rocker to rotate backwards and lift, the front end of the seat frame is lifted and upwarps, the seat frame integrally slides backwards along a bottom supporting seat through a rotating sliding mechanism, a first footrest is pulled backwards by the seat frame, under the action of a second rocker, the first footrest overturns forwards, and meanwhile, the telescopic device acts on a second footrest to slide and expand along the first footrest; the second telescopic device is controlled to contract, the second linkage mechanism deforms, the first guide rod and the second guide rod respectively rotate forwards around the seat frame, the back frame tilts backwards relative to the seat frame, the height of the lower end of the back frame is reduced, and the back frame moves forwards simultaneously.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

1. the utility model controls the upwarp and the integral backward movement of the front end of the seat frame and the overturning and expansion of the foot rest frame through the first telescopic device; the front end of the seat frame is tilted so that the length of a foot rest connected with the seat frame can be designed to be longer, and the foot rest does not wipe the bottom foot and the ground in the extending process under the condition of ensuring that the foot rest is long enough; meanwhile, when the footrest frame is unfolded, the whole seat frame can move backwards, so that the occupation of the front space is reduced, the seat frame does not interfere with front furniture, and the design is more humanized.

2. The back frame is controlled to tilt backwards through the second telescopic device, and the back frame moves forwards integrally while the back frame tilts backwards; the back frame can be actively attached to the human body by tilting backwards and moving forwards at the same time, so that the back rubbing feeling when the human body leans backwards is eliminated, and the human engineering is met.

3. Simple structure is ingenious, sits between frame, bracket and the bottom sprag seat, all adopts the mechanism of four-bar linkage to realize the linkage between back of the body frame and the seat frame, and simple structure and effect are obvious, can reduce too much coupling mechanism's design, save the cost.

4. The adjusting modes are more diversified, the first telescopic device and the second telescopic device are independently controlled, so that the back frame can be adjusted under the condition that the seat frame is not limited or the seat frame can be adjusted under the condition that the back frame is not changed, and the back frame and the seat frame can be simultaneously controlled; can meet the use requirements of different crowds.

5. The seat frame is connected with the bottom supporting frame through the rotating sliding mechanism, the structure is simple and ingenious, and the seat frame can effectively rotate relative to the bottom supporting frame and can slide after rotating.

Drawings

Fig. 1 is a schematic perspective view of a leisure chair in a sitting posture according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of the leisure chair in the embodiment of the present invention in a tilted state;

fig. 3 is a schematic top perspective view of the foldable footrest of the embodiment of the present invention when folded under the seat frame;

fig. 4 is a schematic top perspective view of the footrest in a half-flipped and unfolded state relative to the seat frame in the embodiment of the present invention;

fig. 5 is a schematic top perspective view of the footrest in a fully flipped and unfolded state relative to the seat frame in the embodiment of the present invention;

fig. 6 is a schematic bottom perspective view of the foldable footrest of the embodiment of the present invention when folded under the seat frame;

fig. 7 is a schematic bottom perspective view of the half-flipped and unfolded state of the footrest relative to the seat frame in the embodiment of the present invention;

fig. 8 is a schematic bottom perspective view of the footrest in a fully flipped and unfolded state relative to the seat frame in the embodiment of the present invention;

fig. 9 is a schematic side perspective view of the footrest folded and retracted under the seat frame according to the embodiment of the present invention;

fig. 10 is a schematic side perspective view of the footrest in a half-flipped and unfolded state relative to the seat frame according to the embodiment of the present invention;

fig. 11 is a schematic side perspective view of the footrest in a fully flipped and unfolded state relative to the seat frame in the embodiment of the present invention;

FIG. 12 is an enlarged view of portion A of FIG. 11;

FIG. 13 is a schematic perspective view of the seat frame, the bottom support base and the telescoping device in the embodiment of the present invention;

FIG. 14 is an enlarged view of detail B of FIG. 13;

fig. 15 is a schematic perspective view showing a connection relationship between the first and second foot rests and the telescopic device in the embodiment of the present invention;

FIG. 16 is a schematic perspective view of the telescopic device after the folding and shrinking of the footrest in the embodiment of the present invention;

fig. 17 is a schematic perspective view of the back frame and the rotation support part in the embodiment of the present invention;

FIG. 18 is an enlarged view of detail C of FIG. 17;

fig. 19 is a schematic front perspective view of the connection between the back frame and the seat frame in the embodiment of the utility model;

fig. 20 is a schematic back perspective view of the connection between the back frame and the seat frame in the embodiment of the present invention;

the figures are numbered: a seat frame 1; a bottom support base 2; a support base plate 2 a; a support side plate 2 b; a mounting hole 2 c; a chair leg component a; a vertical support rod b; a first telescopic device 3; a footrest frame 4; a first foot rest 5 a; a second foot rest 5 b; a front cross bar 6 a; a rear cross bar 6 b; a left vertical bar 7 a; a right vertical bar 7 b; a reinforcing vertical bar 8; the sliding mechanism 9 is rotated; rotating the slider 10; a guide bar 11; a guide bar cross bar 12; a guide rod vertical bar 13; the mating member 10 a; a groove 14; a first link mechanism 15; a first support plate 16; a second support plate 17; a first rocker 18; a through hole 19; a rotating shaft 20; a first footrest 21; a connecting vertical plate 22; the connecting plate 23 is rotated; a rotating link 24; a second rocking lever 25; a second footrest 26; a supporting upright plate 27; a slide mechanism 28; a guide rail 2 a; a slider 29 b; a telescoping mechanism 30; a gimbal link 31; a first link 32; a second link 33; a connecting rail 34; an upper link 33 a; a lower link 33 b; a connecting diagonal rod 33 c; a ball joint 35; a mounting plate 36; a back frame 37; a rotation support portion 38; a support rail 38 a; support side bars 38 b; a second telescopic device 39; a connection frame 40; a left vertical bar 41; a right vertical rod 42; a lower cross bar 43; a mounting seat 44; a mounting back plate 44 a; a mounting side plate 44 b; a flap 45; a holding frame 46; a holding plate 47; a first guide bar 48; a second guide rod 49; a connecting seat 50; a connection base plate 51; the first connecting riser 52 a; second connecting risers 52 b; the first connecting lug 53 a; the second engaging lug 53 b; a second linkage 54.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present embodiment is described with reference to the orientation of the various components, such as front, rear, etc., in a normal use condition with the user seated in the seat.

The specific implementation manner of the utility model is as follows:

as shown in fig. 1-20, the utility model provides a frame structure of a multifunctional leisure chair, which comprises a seat frame 1, a back frame 37, a foot rest 4, a leg assembly a and a bottom support base 2 connected and fixed on the leg assembly a; a first telescopic device 3 is arranged between the seat frame and the bottom support seat.

As shown in fig. 3-15, the bottom support base 2 includes a support bottom plate 2a and support side plates 2b, the support side plates 2b are formed by extending along two sides of the support bottom plate 2a in a forward and upward direction, a mounting hole 2c is formed in the middle of the support bottom plate 2a, a vertical support rod b is arranged in the middle of the chair leg assembly a, the vertical support rod b can be an air rod, and the support bottom plate 2a and the chair leg assembly a are rotatably inserted and matched through the mounting hole 2 c; the seat frame 1 is positioned above the bottom supporting seat 2, the seat frame 1 is a frame shaped like a Chinese character 'kou', the seat frame 1 comprises a front transverse rod 6a, a rear transverse rod 6b, a left longitudinal rod 7a, a right longitudinal rod 7b and reinforcing longitudinal rods 8 arranged at intervals, and two ends of each reinforcing longitudinal rod 8 are respectively connected and fixed on the front transverse rod 6a and the rear transverse rod 6 b; the rear end of the seat frame 1 and the rear end of the bottom supporting seat 2 are in rotational sliding fit, and specifically refer to: a rotary sliding mechanism 9 is arranged between the reinforcing vertical rod 8 on the seat frame 1 and the supporting side plate 2b on the bottom supporting seat 2; as shown in fig. 9, 13 and 14, the rotary sliding mechanism 9 includes a rotary slider 10 and a guide rod 11, the guide rod 11 includes a guide rod cross bar 12 and a guide rod vertical bar 13 extending upward from two sides of the guide rod cross bar 12 in the vertical direction, and the guide rod vertical bar 13 is connected and fixed on the inner side of the reinforcing vertical bar 8; the rotating slide block 10 is formed by folding two folding pieces 10a, grooves 14 are arranged at the upper parts of the folding pieces 10a, and after the two folding pieces 10a are folded, the grooves 14 on the two folding pieces 10a are folded to form a sliding chute in sliding fit with the guide rod cross rod 12; when the device is installed, the guide rod cross rod 12 is matched with the groove 14 on one of the butting parts 10a, then the other butting part 10a is butted with the guide rod cross rod, and the two butting parts 10a are connected and fixed through screws; the two oppositely-combined parts 10a are oppositely combined and fixed to form the rotating slide block 10, and the lower part of the rotating slide block 10 is in running fit with the rear end position of the supporting side plate 2b through the rotating shaft 20, so that the seat frame 1 and the supporting side plate 2b can relatively rotate and slide.

As shown in fig. 13, the first telescopic device 3 is an electric push rod, the front cross bar 6a and the supporting base plate 2a on the seat frame 1 are correspondingly provided with a first supporting plate 16 and a second supporting plate 17, the first supporting plate 16 faces downward, the upper end of the first supporting plate 16 is fixedly connected to the front cross bar 6a, the second supporting plate 17 faces upward, the bottom of the second supporting plate 17 is fixedly connected to the supporting base plate 2a, the head of the first telescopic device 3 is hinged to the first supporting plate 16, and the tail of the first telescopic device 3 is hinged to the second supporting plate 17.

As shown in fig. 6-13, a first rocker 18 is disposed between the front portion of the seat frame 1 and the front end of the supporting side plate 2b, and two ends of the first rocker 18 are respectively hinged to the reinforcing vertical rod 8 and the supporting side plate 2b on the seat frame 1, specifically: as shown in fig. 13, through holes 19 are respectively formed at two ends of the first rocker 18, the through holes 19 are correspondingly formed at the front end position of the reinforced vertical rod 8 and the front end position of the supporting side plate 2b, when the device is installed, after the through holes 19 at two ends of the first rocker 18 are respectively aligned with the through holes 19 on the reinforced vertical rod 8 and the supporting side plate 2b, a rotating shaft 20 is arranged on the through holes 19 in a penetrating manner, so that the upper end of the first rocker 18 is hinged with the reinforced vertical rod 8, and the lower end of the first rocker 18 is hinged with the supporting side plate 2 b; and the hinged position between the first telescopic device 3 and the seat frame 1 is positioned in front of the hinged position between the first rocker 18 and the supporting side plate 2b, so that the seat frame 1 can drive the first rocker 18 to rotate under the action of the first telescopic device 3.

As shown in fig. 3-16, the footrest 4 includes a first footrest 5a and a second footrest 5b, the first footrest 5a includes a first footrest 21 and connecting upright plates 22 respectively connected to the left and right sides of the first footrest 21, the connecting upright plates 22 are sheet metal parts, and have high strength and are economical, a rotating connecting plate 23 is correspondingly arranged on the front cross bar 6a of the seat frame 1, and the connecting upright plates 22 and the rotating connecting plate 23 are rotatably connected by a rotating connecting rod 24, so that the first footrest 5a can be turned over around the front end of the seat frame 1; a second rocker 25 is connected between the rear part of the connecting vertical plate 22 and the front part of the supporting side plate 2b, the upper end of the second rocker 25 is hinged with the connecting vertical plate 22, and the hinged position of the second rocker 25 and the connecting vertical plate 22 is positioned in front of the rotary connecting position of the connecting vertical plate 22 and the rotary connecting plate 23; the lower end of the second rocker 25 is hinged to the supporting side plate 2b, and the hinged position is the same as the hinged position of the first rocker 18 and the supporting side plate 2b, specifically: as shown in fig. 13, a through hole 19 is formed at the lower end of the second rocker 25, a rotating shaft 20 penetrating through the rotating connection part of the lower end of the first rocker 18 and the supporting side plate 2b is continuously penetrated through the through hole 19 at the lower end of the second rocker 25, so that a first link mechanism 15 is formed among the first rocker 18, the seat frame 1, the second rocker 25 and the leg rest 4, and the first link mechanism 15 is a four-bar link mechanism.

As shown in fig. 8, 15 and 16, the second footrest 5b is stacked on the first footrest 5a, the second footrest 5b includes a second footrest 26, and two sides of the second footrest 26 are respectively provided with a supporting vertical plate 27 arranged at left and right intervals; the second foot rest 5b is in sliding fit with the first foot rest 5a through a sliding mechanism 28, specifically: the sliding mechanism 28 comprises a guide rail 29a and a sliding block 29b, the guide rail 29a is fixedly connected to the connecting vertical plate 22, the guide rail 28 is made of plastic materials and can reduce production cost, the sliding block 29b is fixed on two sides below the second footrest 26, the sliding block 29b is located between the two supporting vertical plates 27, and the supporting vertical plates 27 provide transverse supporting force for the sliding block 29b, so that the second footrest 5b can be unfolded and retracted along the first footrest 5a in a sliding manner.

A telescopic mechanism 30 is arranged below the seat frame 1, the first foot rest 5a and the second foot rest 5b, the telescopic mechanism 30 can control the sliding and stretching of the second foot rest 5b, and the telescopic mechanism 30 comprises a universal joint connecting rod 31, a first connecting rod 32 and a second connecting rod 33; the first connecting rod 31 and the second connecting rod 32 are in running fit, and the first connecting rod 32 and the first foot rest 5a, and the second connecting rod 33 and the second foot rest 5b are in running fit, specifically: a connecting transverse plate 34 is arranged on the first foot rest 5a, two ends of the connecting transverse plate 34 are respectively connected and fixed on the connecting vertical plate 22, the first connecting rod 32 is positioned below the connecting transverse plate 34, and the middle part of the first connecting rod 32 is rotatably connected with the connecting transverse plate 34 through a rotating shaft 20; the second connecting rod 33 comprises an upper connecting rod 33a and a lower connecting rod 33b which are staggered in height, the upper connecting rod and the lower connecting rod are connected through a connecting inclined rod 33c, the front end of the upper connecting rod 33a is rotatably connected to the middle position of the front end of the second footrest 26, the lower connecting rod 33b and the first connecting rod 32 are positioned on the same horizontal plane, and the rear end of the lower connecting rod 33b is rotatably connected with the front end of the first connecting rod 32. The two ends of the universal joint connecting rod 31 are respectively connected to the first connecting rod 32 and the seat frame front cross rod 6a, the two ends of the universal joint connecting rod 31 are both ball joint universal joints 35, the front end of the universal joint connecting rod 31 is rotatably and swingably matched with the rear end of the first connecting rod 32, the seat frame front cross rod 6a is provided with a downward mounting plate 36, and the rear end of the universal joint connecting rod 31 is rotatably and swingably matched with the mounting plate 36.

As shown in fig. 1, 3, 6 and 9, when the seat is in a normal use state, the foot rest 4 is folded and contracted below the seat frame 1, and the rotating slider 10 is positioned at the rear end of the guide rod cross bar 12; when the foot rest 4 needs to be unfolded for resting feet, the first telescopic device 3 is controlled to be contracted, and in the contraction process of the first telescopic device 3, as shown in fig. 4, 7 and 10, the first telescopic device 3 drives the seat frame 1 to move backwards through the first supporting plate 16, the seat frame 1 simultaneously drives the first rocker 18, so that the first rocker 18 rotates backwards around the supporting side plate 2b to a pulled-up position, the front end of the seat frame 1 is lifted up and tilted upwards after the first rocker 18 is pulled up, and the seat frame 1 integrally slides backwards through the rotating slide block 10 while the front end of the seat frame 1 is lifted up; when sitting frame 1 front end upwarp and the motion of wholly shifting backward, sit frame 1 and can drive first foot rest 5a and overturn forward simultaneously, specifically mean: because a four-bar linkage mechanism is formed among the seat frame 1, the first rocker 18, the second rocker 25 and the first foot rest 5a, when the front end of the seat frame 1 tilts up and moves backwards, the rotating connecting plate 23 on the front cross rod 6a of the seat frame pulls the first foot rest 5a backwards, and the first foot rest 5a turns forwards by taking the hinged point of the second rocker 25 and the connecting vertical plate 22 as a rotating point; meanwhile, when the first foot rest 5a is turned forwards, the universal joint connecting rod 31 is enabled to rotate forwards relative to the mounting plate 36, the connecting end of the universal joint connecting rod 31 and the first connecting rod 32 pulls the first connecting rod 32 backwards to enable the first connecting rod 32 to rotate relative to the connecting cross rod 34, the first connecting rod 32 rotates and simultaneously drives the second connecting rod 33 to rotate, and the second connecting rod 33 rotates to enable the second foot rest 5b to slide and unfold along the first foot rest 5 a; as shown in fig. 5, 8 and 11, when the first telescopic device 3 is completely retracted, the front end of the seat frame 1 is tilted up to the maximum height, the first foot rest 5a is completely flipped open forward, and the second foot rest 5b slides forward relative to the first foot rest 5 a.

The first link mechanism 15 enables the first foot rest 5a to be linked with the seat frame 1 in the movement process that the front end of the seat frame 1 is driven to upwarp by the first telescopic device 3 and the seat frame 1 integrally moves backwards, the first foot rest 5a simultaneously turns forwards, and the telescopic mechanism 30 controls the second foot rest 5b to slide and unfold along the first foot rest 5a due to the turning of the first foot rest 5 a; the opening and closing of the footrest 4 can be completed only by controlling the first telescopic device 3, and the operation is convenient; in addition, in the process of turning and unfolding the first and second leg rest 5a, 5b, the front end of the seat frame 1 can be upwarped and lifted for a certain height, so that the foot rest 4 can be ensured not to wipe the feet and the ground in the process of extending the leg rest 4 under the condition that the leg rest 4 is designed to be long enough; and after the footrest 4 overturns and expands, the seat frame 1 can wholly move backwards, so that the occupation of the front space after the footrest extends out can be reduced, the furniture is prevented from being interfered, and the integral design is very reasonable and humanized.

As shown in fig. 17-20, a rotary support part 38 is provided at the lower end of the back frame 37, and the back frame is connected and fixed to the rotary support part 38; the rotation support portion 38 includes a support cross bar 38a and support side bars 38b respectively connected to two sides of the support cross bar 38a, the support side bars 38b are formed by extending along two sides of the support cross bar 38a in a diagonal forward and downward direction, a downwardly protruding "square" shaped connection frame 40 is provided at a middle position of a lower end of the back frame 37, the connection frame 40 is connected and fixed to the support cross bar 38a, and the specific connection mode is: the connecting frame 40 comprises left and right vertical rods 41, 42 and a lower cross rod 43, a mounting seat 44 is correspondingly arranged at the middle position of the supporting cross rod 38a, the mounting seat 44 includes a mounting back plate 44a and mounting side plates 44b connected to both sides of the mounting back plate 44a, the mounting back plate 44a is welded at the middle position of the supporting cross bar 38a, the front end of the mounting side plate 44b extends along the inner side direction to form a folded plate 45 which can cover the connecting frame 40, and the left and right vertical rods 25, 26 are respectively provided with a clamping frame 46, clamping plates 47 are arranged at the front and back of the clamping frame 46 to clamp the front and back ends of the left and right vertical rods 25, 26, when the device is installed, the clamping frame 46 is firstly fixed on the left and right vertical rods 25, 26 through screws, the connecting frame 40 is then placed in the mounting seat 44 and is fixed to the mounting back plate 44a by bolts.

As shown in fig. 1, 2, 19 and 20, the supporting side rod 38b is respectively provided with a first guide rod 48 and a second guide rod 49 with the left vertical rod 7a and the right vertical rod 7b of the seat frame, and two ends of the first guide rod 48 and the second guide rod 49 are respectively hinged with the supporting side rod 38b and the left vertical rod 7a and the right vertical rod 7b, which specifically means: a connecting seat 50 is respectively arranged on the left and right vertical rods 7a and 7b, the connecting seat 50 comprises a connecting bottom plate 51, the connecting bottom plate 51 is fixedly connected with the upper ends of the left and right vertical rods 7a and 7b through screws, two first and second connecting vertical plates 52a and 52b arranged at intervals extend downwards along the connecting bottom plate 51, the second connecting vertical plate 52b is positioned in front of the first connecting vertical plate 52a, and the length of the second connecting vertical plate 52b is longer than that of the first connecting vertical plate 52 a; when the device is installed, the lower end of the first guide rod 48 is hinged with the supporting side rod 38b, and the upper end of the first guide rod 48 is hinged with the first connecting vertical plate 52 a; the lower end of the second guide rod 49 is hinged with the supporting side plate 38b, the upper end of the second guide rod 49 is hinged with the second connecting vertical plate 52b, a second linkage 54 is formed among the first and second guide rods 48 and 49, the seat frame 1 and the rotating supporting part 38, and the second linkage 54 is a four-bar linkage.

As shown in fig. 19 and 20, a second telescopic device 39 is disposed between the back frame 37 and the seat frame 1, the second telescopic device 39 is an electric push rod, a front cross bar 6a and a mounting back plate 44a on the seat frame 1 are correspondingly provided with a first connecting lug 53a and a second connecting lug 53b, the first connecting lug 53a faces downward, the upper end of the first connecting lug 53a is fixedly connected to the front cross bar 6a, the second connecting lug 53b faces downward, the bottom of the second connecting lug 53b is fixedly connected to the mounting back plate 44a, the head of the second telescopic device 39 is hinged to the first connecting lug 53a, and the tail of the electric push rod is hinged to the second connecting lug 53 b.

As shown in fig. 1, when the human body is in a normal sitting posture, the electric push rod is in an extended state, the back frame 37 is in a back standing state, and the first and second guide rods 48 and 49 are inclined backwards; when the human body needs to lie down, the second telescopic device 39 is controlled to be contracted, as shown in figure 2, during the contraction process of the second telescopic device 39, the second telescopic device drives the rotation support part 38 to move forward, the second link mechanism 54 formed between the support side rod 38b on the rotation support part 38 and the first and second guide rods 32 and 33 and the seat frame 1 is deformed, the support side rod 38b moves forward to make the first and second guide rods 32, 33 rotate forward around the first and second connecting vertical plates 36a, 36b, respectively, the back frame 37 connected to the rotating support 38 tilts backward, the angle between the back frame 37 and the seat frame 1 increases, at the same time, the lower end of the back frame 37 descends and the back frame 37 moves forward, the height of the back frame 37 can be actively reduced and the back frame can move forwards to fit the human body in the backward tilting process, so that the 'back rubbing feeling' is eliminated, and the human body feels more comfortable; after the second expansion device 38 is completely contracted, as shown in fig. 2, at this time, the first and second guide rods 32 and 33 are driven by the supporting side rod 38b to rotate around the first and second upright connecting plates 36a and 36b to a forward oblique direction, and at this time, the maximum limited angle is reached between the back frame 37 and the seat frame 1; and the first telescopic device 3 and the second telescopic device 39 are independently controlled, namely, the seat frame 1 is kept relatively fixed during the movement of the back frame 37.

Then, a control method of the multifunctional leisure chair frame structure is provided, when a human body uses the leisure chair of the utility model, the first telescopic device 3 can be respectively controlled to adjust the upwarping and the integral backward movement of the front end of the seat frame 1, and the foot rest frame 4 can be turned and unfolded to realize the support of the feet of the human body; the back frame 37 is adjusted to be inclined backwards by controlling the second telescopic device 39, and the back frame 37 is inclined backwards and moved forwards at the same time to eliminate the 'back rubbing feeling', so that the comfort of the leaning and leaning state of the human body is met; the functions are diversified, and the human engineering is better met.

Claims (9)

1. A multifunctional leisure chair frame structure is characterized by comprising a back frame, a seat frame, a foot rest, a chair foot component and a bottom support seat which is connected and fixed on the chair foot component; the footrest is movably arranged at the front end of the seat frame and is in running fit with the seat frame, and a first link mechanism is arranged among the front end of the seat frame, the footrest and the bottom support seat; a second linkage mechanism is arranged between the rear end of the seat frame and the back frame; the seat frame is positioned above the bottom supporting seat and is in rotating sliding fit with the bottom supporting seat; a first telescopic device for controlling the first link mechanism is arranged between the seat frame and the bottom support seat, and a second telescopic device for controlling the second link mechanism is arranged between the back frame and the seat frame; the two ends of the first telescopic device are respectively hinged with the seat frame and the supporting seat, the two ends of the second telescopic device are respectively hinged with the back frame and the seat frame, and the first telescopic device and the second telescopic device are respectively and independently controlled; under the action of the first telescopic device, the front end of the seat frame tilts upwards and moves backwards integrally, and the foot rest turns forwards around the seat frame and extends forwards; under the action of the second telescopic device, the back frame tilts backwards relative to the seat frame and moves forwards integrally.

2. The frame structure of a multifunctional leisure chair according to claim 1, characterized in that: the first link mechanism comprises a first rocker and a second rocker, two ends of the first rocker are respectively hinged with the front part of the seat frame and the bottom supporting seat, and two ends of the second rocker are respectively hinged with the foot rest and the bottom supporting seat; a four-link mechanism is formed among the seat frame, the first rocker, the second rocker and the foot rest; the first link mechanism deforms under the action of the first telescopic device.

3. The frame structure of a multifunctional leisure chair according to claim 2, characterized in that: the hinge point of the first rocker and the bottom supporting seat and the hinge point of the second rocker and the bottom supporting seat are located at the same position, and the hinge point of the second rocker and the foot rest and the rotation connecting points of the foot rest and the seat frame are arranged in a staggered mode.

4. The frame structure of a multifunctional leisure chair according to claim 1, characterized in that: the second linkage mechanism comprises a first guide rod and a second guide rod, a rotating supporting part is arranged at the lower end of the back frame, two ends of the first guide rod and the second guide rod are hinged with the rotating supporting part and the seat frame respectively, the rotating supporting part, the first guide rod and the second guide rod form a four-linkage mechanism with the seat frame, and the second linkage mechanism deforms under the action of the second telescopic device.

5. The frame structure of a multifunctional leisure chair according to claim 1, characterized in that: the footrest comprises a first footrest frame and a second footrest frame which are in sliding fit, and the first footrest frame is rotationally connected with the front end of the seat frame; and a telescopic mechanism is arranged between the first footrest and the second footrest, and the second footrest slides along the first footrest to expand and contract under the action of the telescopic mechanism in the rotating process of the first footrest around the seat frame.

6. The frame structure of a multifunctional leisure chair according to claim 5, characterized in that: the telescopic mechanism comprises a universal joint connecting rod, a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are in running fit; the first connecting rod and the first footrest, and the second connecting rod and the second footrest are in running fit respectively; the two ends of the universal joint connecting rod are respectively connected to the first connecting rod and the seat frame, and the universal joint connecting rod and the first connecting rod and the universal joint connecting rod and the seat frame are respectively in rotating swing fit.

7. The frame structure of a multifunctional leisure chair according to claim 1, characterized in that: the bottom sprag seat include be connected fixed supporting baseplate and connect in the support curb plate of supporting baseplate both sides with chair foot subassembly, seat frame rear end and support curb plate rear end between be equipped with one and rotate glide machanism, rotation glide machanism include one and rotate slider and a guide arm, guide arm and rotation slider sliding fit, rotation slider and support curb plate rear end between through pivot normal running fit, the both ends of guide arm are connected to be fixed on the seat frame.

8. The frame structure of a multifunctional leisure chair according to claim 7, characterized in that: the supporting side plates are formed by extending along two sides of the supporting bottom plate towards the oblique front upper direction.

9. The frame structure of a multifunctional leisure chair according to claim 1, characterized in that: the first and second telescopic devices adopt electric push rods; the leisure chair is in a normal sitting posture state, and the first and second telescopic devices are in an extension state; when the leisure chair is in a leaning state, the first and second telescopic devices are in a contraction state.

Images