CN220477265U - Single motor driven zero gravity leisure chaise longue - Google Patents

Abstract

The utility model discloses a zero gravity leisure chair driven by a single push rod motor, which comprises: the seat frame, be used for installing two extension lifting assemblies of running-board, actuating mechanism, base and back, two extension lifting assemblies relative arrangement and connect between seat frame and base, the back articulates between seat frame and base, wherein, actuating mechanism includes push rod motor and drive assembly, push rod motor articulates between base and drive assembly, drive assembly articulates between base and extension lifting assemblies, push rod motor passes through the action of drive assembly drive extension lifting assembly in order to make the pedal link group in the extension lifting assembly extend, and extension lifting assembly drives seat frame lifting, the seat frame is driven the back upset and is leaned on. Therefore, the zero gravity state can be adjusted by using one push rod motor, so that the structural space inside the leisure chair frame is saved, and the cost of the whole product is reduced.

Description

Single motor driven zero gravity leisure chaise longue

Technical Field

The utility model relates to the technical field of leisure chairs, in particular to a single-motor-driven zero-gravity leisure chair.

Background

With the continuous development of social economy, people have increasingly higher requirements on quality of life, and also have increasingly higher requirements on comfort of seats. For a zero gravity leisure chair, the angle between the cushion and the horizontal plane is required to be larger in a lying state, and meanwhile, the included angle between the cushion and the backrest is required to be larger. The center of gravity of the human body is placed at the hip position by matching with the stretching angles of the pedals and the backrest, and other body parts are not stressed. Simultaneously, the foot position of the human body is higher than the heart position of the human body, so that the human body is in a completely relaxed state with zero gravity.

Most of the leisure chairs on the market are not zero-gravity leisure chairs, and part of the zero-gravity leisure chairs are provided with two push rod motors or three push rod motors, so that the overall cost of the product is high.

Disclosure of Invention

In order to overcome at least one defect in the prior art, the utility model provides a single-motor-driven zero-gravity leisure chair, which can realize the adjustment of a zero-gravity state by using one push rod motor, thereby saving the structural space in the leisure chair frame and reducing the cost of the whole product.

The utility model adopts the technical proposal for solving the problems that:

a single motor driven zero gravity leisure chair comprising: the seat frame, two stretching and lifting components for installing the pedal, the driving mechanism, the base and the backrest are oppositely arranged and connected between the seat frame and the base, the backrest is hinged between the seat frame and the base,

the driving mechanism comprises a push rod motor and a transmission assembly, the push rod motor is hinged between the base and the transmission assembly, the transmission assembly is hinged between the base and the stretching lifting assembly, the push rod motor drives the stretching lifting assembly to act through the transmission assembly so as to stretch a pedal connecting rod group in the stretching lifting assembly, the stretching lifting assembly drives the seat frame to lift, and the seat frame drives the backrest to turn over and tilt.

Further, the stretching lifting assembly comprises a base connecting plate for connecting a base, a base frame connecting plate for connecting a base frame, a rear swing rod, a front swing rod, a guide groove rod, a lifting rod and a pedal connecting rod group, wherein the rear swing rod is respectively hinged to the rear end of the base connecting plate and the rear end of the base frame connecting plate, the front swing rod is respectively hinged to the base frame connecting plate, the guide groove rod and the lifting rod, the guide groove rod is further hinged to the front end of the base connecting plate, the lifting rod is further hinged to the middle of the base connecting plate, and the pedal connecting rod group is respectively hinged to the front end of the base frame connecting plate and the front swing rod.

Further, a first front swing hole, a second front swing hole, a third front swing hole and a fourth front swing hole are sequentially formed in the front swing rod, the seat frame connecting plate is hinged to the first front swing hole, the lifting rod is hinged to the second front swing hole, the guide groove rod is hinged to the third front swing hole, and the pedal connecting rod group is hinged to the fourth front swing hole.

Further, the front swing rod is in a V shape, and the second front swing hole is positioned at the V-shaped corner of the front swing rod.

Further, a limiting bulge is arranged on the seat frame connecting plate and is used for propping against the pedal connecting rod group to limit the continuous extension of the pedal connecting rod group, and after the limiting bulge is propped against the pedal connecting rod group, the lifting rod swings upwards to lift the seat frame connecting plate.

Further, a kidney-shaped hole is formed in the guide groove rod, a pin is arranged on the third front swing hole and is slidably arranged on the kidney-shaped hole, and when the lifting rod swings upwards to lift the seat frame connecting plate, the pin slides in the kidney-shaped hole and drives the guide groove rod to rotate so as to change the lifting amplitude of the seat frame connecting plate.

Further, one end of the lifting rod is provided with an abutting surface, and when the seat frame connecting plate is lifted to the upper limit position, the abutting surface abuts against the base connecting plate to limit.

Further, the drive assembly includes dwang, two first transfer lines and two second transfer lines, and the first end of each first transfer line articulates mutually with the first end of a different second transfer lines respectively, and the second end of first transfer line articulates in the base, and the second end of second transfer line articulates in the seat frame connecting plate, and the dwang is connected between two first transfer lines, and push rod motor articulates in the dwang, push rod motor drive dwang in order to drive first transfer line swing, and first transfer line passes through second transfer line drive seat frame connecting plate lifting.

Further, the base is provided with two support plates which are arranged oppositely, and the support plates are connected and supported below the base connecting plate.

Further, the backrest is hinged with the base through a backrest connecting rod.

The zero gravity leisure chair provided by the utility model has the following technical effects:

(1) The stretching lifting assembly is connected between the seat frame and the base, the backrest is hinged between the seat frame and the base, the push rod motor is hinged between the base and the transmission assembly, the transmission assembly is hinged between the base and the stretching lifting assembly, the transmission assembly is driven to rotate relative to the base through the stretching of the push rod motor, the transmission assembly drives the stretching lifting assembly to act, a pedal connecting rod group in the stretching lifting assembly stretches, the stretching lifting assembly drives the seat frame to lift, and the seat frame drives the backrest to turn over and tilt, so that the zero gravity state adjustment can be realized by using one push rod motor, the structural space inside the leisure chair frame is saved, and the cost of the whole product is reduced;

(2) In the stretching lifting assembly, the seat frame connecting plate is lifted as much as possible by utilizing the functions of the guide groove rods and the lifting rods, so that the inclination angle of the seat frame relative to the base is as large as possible, and the inclination angle of the backrest is also changed simultaneously by utilizing the pulling of the backrest connecting rod when the seat frame is lifted, so that the zero gravity inclination angle is better realized by the mechanism designs.

Drawings

FIG. 1 is a perspective view of a zero gravity leisure chair according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a zero gravity leisure chair according to an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of an extension and lift assembly according to an embodiment of the present utility model;

FIG. 4 is an exploded view of an extension and lift assembly according to an embodiment of the present utility model;

FIG. 5 is a schematic perspective view of a driving mechanism according to an embodiment of the present utility model;

FIG. 6 is a perspective view of a base according to an embodiment of the utility model;

FIG. 7 is a schematic side view of an extension and lift assembly of an embodiment of the present utility model in an initial state;

FIG. 8 is a schematic side view of an extension and lift assembly of an embodiment of the present utility model in a first state;

figure 9 is a schematic side view of an extension and lift assembly in a second state according to an embodiment of the present utility model.

Wherein the reference numerals have the following meanings:

1. a seat frame; 11. a backrest connecting sheet; 2. an extension and lift assembly; 21. a chassis connecting plate; 211. a first substrate aperture; 212. a second substrate aperture; 213. a third floor hole; 22. a seat frame connecting plate; 221. a first seat plate hole; 222. a second seat plate hole; 223. a third seat plate hole; 224. driving the hinge post; 225. a limit protrusion; 23. a rear swing rod; 231. a first back swing hole; 232. a second back swing hole; 24. a front swing rod; 241. a first front swing hole; 242. a second front swing hole; 243. a third front swing hole; 244. a fourth front swing hole; 25. a guide groove bar; 251. a first hinge hole; 252. waist-shaped holes; 26. a lifting rod; 261. a first lifting hole; 262. a second lifting hole; 263. an abutment surface; 27. pedal connecting rod group; 3. a driving mechanism; 31. a push rod motor; 32. a transmission assembly; 321. a rotating lever; 322. a first transmission rod; 323. a second transmission rod; 4. a base; 41. a support plate; 42. a first hinge ear; 43. a second hinge ear; 44. a third hinge ear; 5. a backrest; 51. a fourth hinge ear; 52. a fifth hinge ear; 6. a backrest connecting rod.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 and 2, the utility model discloses a zero gravity leisure chair driven by a single push rod motor, comprising: the seat frame 1, two extension lifting assemblies 2, a driving mechanism 3, a base 4 and a backrest 5.

Wherein, the base 4 is used for supporting on the ground so as to play a bearing role on the whole zero gravity leisure chair; the stretching and lifting assembly 2 is used as a motion functional component, the stretching and lifting assembly 2 is used for installing a pedal, in particular the pedal can be installed on a pedal connecting rod group 27 of the stretching and lifting assembly 2, the driving mechanism 3 is used as a power source, and the driving mechanism 3 is connected between the base 4 and the stretching and lifting assembly 2; the two stretching and lifting assemblies 2 are oppositely arranged and connected between the seat frame 1 and the base 4, the backrest 5 is hinged between the seat frame 1 and the base 4, in particular, the stretching and lifting assemblies 2 are arranged above the base 4, the seat frame 1 is arranged above the stretching and lifting assemblies 2, the backrest 5 is hinged at the rear of the seat frame 1 and the rear of the base 4 respectively, the driving mechanism 3 can drive the stretching and lifting assemblies 2 to act, so that the pedal connecting rod group 27 in the stretching and lifting assemblies 2 stretches, the pedal stretches out obliquely upwards to be used as a foot rest, the stretching and lifting assemblies 2 drive the seat frame 1 to lift, and the seat frame 1 drives the backrest 5 to tilt.

Specifically, the driving mechanism 3 includes a push rod motor 31 and a transmission assembly 32, the push rod motor 31 is hinged between the base 1 and the transmission assembly 32, the transmission assembly 32 is hinged between the base 4 and the extension lifting assembly 2, and the push rod motor 21 drives the extension lifting assembly 2 to act through the transmission assembly 32, so as to realize the zero gravity state of extension of the pedal connecting rod set 27, lifting of the seat frame 1 and tilting of the backrest 5.

In summary, through connecting the extension lifting assembly 2 between the seat frame 1 and the base 4, hinge the backrest 5 between the seat frame 1 and the base 4, and hinge the push rod motor 31 between the base 4 and the transmission assembly 32, the transmission assembly 32 is hinged between the base 4 and the extension lifting assembly 2, the transmission assembly 32 is driven to rotate relative to the base 4 through the extension of the push rod motor 31, the transmission assembly 32 drives the extension lifting assembly 2 to act, the pedal connecting rod group 27 in the extension lifting assembly 2 extends, and the extension lifting assembly 2 drives the seat frame 1 to lift, and the seat frame 1 drives the backrest 5 to tilt in a turnover manner, so that the adjustment of a zero gravity state can be realized by using one push rod motor 31, thereby saving the structural space inside the leisure chair frame, and simultaneously reducing the cost of the whole product.

Referring to fig. 3 and 4, in the present embodiment, the extension and lifting assembly 2 includes a base connection plate 21, a seat frame connection plate 22, a rear swing link 23, a front swing link 24, a guide groove bar 25, a lifting bar 26, and a pedal linkage 27. The base connecting plate 21 is used for connecting the base 4, specifically, the base connecting plate 21 can be connected above the supporting plate 41 of the base 4 by means of screwing, welding and the like, so that the supporting plate 41 is used for supporting the base connecting plate 21 to improve the connection stability; the seat frame connecting plate 22 is used for connecting the seat frame 1, and specifically, the seat frame connecting plate 22 is connected below the seat frame 1 by means of screw connection, welding and the like; the rear swing rod 23 is respectively hinged to the rear end of the base connecting plate 21 and the rear end of the seat frame connecting plate 22, the front swing rod 24 is respectively hinged to the seat frame connecting plate 22, the guide groove rod 25 and the lifting rod 26, the guide groove rod 25 is also hinged to the front end of the base connecting plate 21, the lifting rod 26 is also hinged to the middle of the base connecting plate 21, and the pedal connecting rod group 27 is respectively hinged to the front end of the seat frame connecting plate 22 and the front swing rod 24.

It should be noted that the hinge points between the above components may be hinged by means of rivets, screws, pins, shafts, etc., and the specific implementation manner of the hinge is not limited in the present utility model.

It should be noted that the two extension and lifting assemblies 2 may also be connected together by a cross bar, so as to strengthen the structural strength of the two extension and lifting assemblies 2 and improve the motion synchronization of the two extension and lifting assemblies 2.

As an example, and referring to the direction shown in fig. 4, the base connecting plate 21 is provided with a first base plate hole 211, a second base plate hole 212 and a third base plate hole 213, where the first base plate hole 211 is located at the front end of the base connecting plate 21, the second base plate hole 212 is located at the middle of the base connecting plate 21, and the third base plate hole 213 is located at the rear end of the base connecting plate 21; the seat frame connecting plate 22 is provided with a first seat plate hole 221, a second seat plate hole 222, a third seat plate hole 223, a driving hinge post 224 and a limiting protrusion 225, wherein the first seat plate hole 221 is positioned at the rear end of the seat frame connecting plate 22, the second seat plate hole 222 is positioned at the front end of the seat frame connecting plate 22, the third seat plate hole 223 is positioned between the first seat plate hole 221 and the second seat plate hole 222, the driving hinge post 224 is positioned between the third seat plate hole 223 and the second seat plate hole 222, and the limiting protrusion 225 is positioned at the front side of the second seat plate hole 222; the rear swing rod 23 is provided with a first rear swing hole 231 and a second rear swing hole 232, wherein the first rear swing hole 231 is positioned at the upper end of the rear swing rod 23, and the second rear swing hole 232 is positioned at the lower end of the rear swing rod 23; the front swing rod 24 is provided with a first front swing hole 241, a second front swing hole 242, a third front swing hole 243 and a fourth front swing hole 244 in sequence; the guide groove rod 25 is provided with a first hinge hole 251 and a kidney-shaped hole 252, wherein the first hinge hole 251 is positioned at the rear end of the guide groove rod 25, and the kidney-shaped hole 252 is positioned at the front end of the guide groove rod 25; the lifting rod 26 is provided with a first lifting hole 261, a second lifting hole 262 and an abutting surface 263, wherein the second lifting hole 262 is positioned at the front end of the lifting rod 26, the abutting surface 263 is positioned at the rear end of the lifting rod 26, and the first lifting hole 261 is positioned between the second lifting hole 262 and the abutting surface 263.

In the above example, when the components are assembled by using the pins, the first bottom plate hole 211 and the second back swing hole 232 are hinged by using a pin; the first back swing hole 231 is hinged with the first seat plate hole 221 through a pin; the second substrate hole 212 is hinged with the first lifting hole 261 through a pin; the second lifting hole 262 is hinged with the second front swing hole 242 through a pin; the third chassis hole 213 is hinged with the first hinge hole 251 by a pin; the third seat plate hole 223 is hinged with the first front swing hole 241 through a pin; the third front swinging hole 243 is hinged with the kidney-shaped hole 252 through a pin, and the pin is also arranged on the kidney-shaped hole 252 in a sliding way; the pedal connecting rod group 27 is of a scissor type connecting rod structure, one connecting end of the pedal connecting rod group 27 is hinged with the second seat plate hole 222 through a pin, and the other connecting end of the pedal connecting rod group 27 is hinged with the fourth front swinging hole 244 through a pin; the drive hinge post 224 may be used to hinge with the transmission assembly 32.

In addition, in the above example, the limiting projection 225 is provided on the seat frame connecting plate 22 for the purpose that the limiting projection 225 can be used to abut against the pedal link set 27 to limit the continued extension of the pedal link set 27, and after the limiting projection 225 abuts against the pedal link set 27, the lifting lever 26 swings upward to lift the seat frame connecting plate 22; the purpose of providing the kidney-shaped hole 252 in the guide groove bar 25 is that when the lifting bar 26 swings upward to lift the seat frame connecting plate 22, the pin slides in the kidney-shaped hole 252 and drives the guide groove bar 25 to rotate so as to change the lifting amplitude of the seat frame connecting plate 22; the purpose of the abutment surface 263 provided on the lifting lever 26 is that the abutment surface 263 can be limited against the base connection plate 21 when the base connection plate 22 is lifted to the upper limit position.

Based on the scheme, the zero gravity leisure chair of the utility model can have the following action states: the state of the zero gravity leisure chair is sequentially changed from the initial state to the first state and the second state by the driving of the push rod motor 31 so as to form a lying state with zero gravity.

It can be understood that the initial state is the sitting state of the zero gravity leisure chair; the first state is: an intermediate state between a sitting position state of the zero gravity leisure chair and a lying position state of the zero gravity leisure chair; the second state is: the zero gravity leisure chair has a lying state with zero gravity.

In the process of changing from the initial state to the first state, the lifting rod 26 keeps still, so that the position of the second front swing hole 242 of the front swing rod 24 relative to the chassis connecting plate 21 is unchanged, at this time, the chassis connecting plate 21, the seat frame connecting plate 22, the rear swing rod 23 and the front swing rod 24 form a four-bar mechanism, the push rod motor 31 drives the seat frame connecting plate 22 to act through the transmission component 32, so that the front end of the seat frame connecting plate 22 is lifted relative to the chassis connecting plate 21, the rear end of the seat frame connecting plate 22 moves backward (when fed back to the zero gravity leisure chair, namely, the front end of the seat frame 1 is lifted relative to the base 4, the rear end of the seat frame 1 moves backward), and the pedal connecting rod group 27 is driven to extend outwards and upwards, and the backrest 4 is driven to tilt backwards relative to the seat frame 1 until the limit protrusion 225 abuts against the pedal connecting rod group 27.

Referring to fig. 8 and 9, when the first state is changed from the second state to the second state, the limiting protrusion 225 abuts against the pedal link group 27, so that the relative distance between the second seat plate hole 222 and the fourth front swing hole 244 is indirectly locked by the pedal link group 27, and under the effect of the continuous output power of the push rod motor 31, the lifting rod 26 rotates upwards, so that the front end of the seat frame connecting plate 22 is lifted again relative to the chassis connecting plate 21 together with the pedal link group 27 (when the seat frame connecting plate is fed back to the zero gravity leisure chair, the front end of the seat frame 1 is lifted again relative to the base 4) until the abutting surface 263 abuts against the base connecting plate 21 to limit.

It should be noted that, in the process of changing from the initial state to the first state, if the hinge axis formed by the second lifting hole 262 and the second front swing hole 242 and the hinge axis formed by the third bottom plate hole 213 and the first hinge hole 251 are collinear, then the pin on the third front swing hole 243 may not slide relative to the kidney-shaped hole 252 in this process; if the hinge axis formed by the second lifting hole 262 and the second front swing hole 242 and the hinge axis formed by the third bottom plate hole 213 and the first hinge hole 251 are not collinear, then the pin on the third front swing hole 243 needs to slide relative to the kidney-shaped hole 252 in the process to overcome the position deviation when the front swing rod 24 and the guide slot rod 25 rotate, so as to avoid locking or bending of the parts under stress, and thus, the requirement on the production precision of each part can be reduced.

It should be noted that, when the abutment surface 263 abuts against the base connecting plate 21, if the driving stroke of the push rod motor 31 is not completed, the pedal linkage 27 may retract under the effect of the continuous output power of the push rod motor 31, so that the pedal linkage 27 is separated from the limiting protrusion 225.

When the first state is changed to the second state, the backrest 5 may also rotate relative to the seat frame 1, depending on the length characteristics of each rod.

It should be noted that, any known structure may be used for the pedal link set 27 to extend and retract the pedal, and the specific structure of the pedal link set 27 is not limited in the present utility model.

Preferably, the front swing link 24 has a V shape, and the second front swing hole 242 is located at a V-shaped corner of the front swing link 24, so that force transmission is smoother.

Referring to fig. 2, in order to achieve the hinge between the backrest 5 and the seat frame 1, preferably, two backrest connecting pieces 11 are disposed at the rear end of the seat frame 1, two fourth hinge lugs 51 are disposed on the backrest 5, each backrest connecting piece 11 is hinged with a fourth hinge lug 51, and in particular, the backrest connecting pieces 11 extend obliquely toward the rear upper side.

Referring to fig. 2 and 6, in order to realize the hinge between the backrest 5 and the base 4, preferably, the zero gravity leisure chair further comprises a backrest connecting rod 6, wherein one end of the backrest connecting rod 6 is hinged to the base 4, the other end of the backrest connecting rod 6 is hinged to the backrest 5, specifically, a fifth hinge lug 52 is arranged at the lower end of the backrest 5, a first hinge lug 42 is arranged at the rear end of the base 4, the front end of the backrest connecting rod 6 is hinged to the first hinge lug 42, and the rear end of the backrest connecting rod 6 is hinged to the fifth hinge lug 52, so that the hinge between the backrest 5 and the base 4 is realized by using the backrest connecting rod 6 as a middle piece, and when the backrest 5 is driven by the base 1 to tilt, the angle between the backrest 5 and the base 1 is changed at the same time by using the pulling of the backrest connecting rod 6, thereby avoiding the locking phenomenon; on the other hand, the backrest connecting rod 6 can enable the overturning and leaning of the backrest 5 to be influenced by the seat frame 1, so that the relative angle between the backrest 5 and the seat frame 1 is better in fit with the zero gravity state.

In this embodiment, referring to fig. 6, as an example, the base 4 may specifically include a five-star foot for supporting the ground, a rotating shaft, and a bracket, wherein a first end of the rotating shaft is inserted on the five-star foot, and a second end of the rotating shaft is inserted on a shaft sleeve of the bracket; the support is provided with a support plate 41, a first hinge lug 42, a second hinge lug 43 and a third hinge lug 44, the support plate 41 is provided with two support plates and is arranged oppositely, the support plate 41 can be used for installing the extension lifting assembly 2, and particularly, the support plate 41 is connected and supported below the base connecting plate 21 in a bolt, welding and other modes so as to improve the connection stability; the first hinge lug 42 can be used for hinging the backrest link 6, the second hinge lug 43 for hinging the push rod motor 31 and the third hinge lug 43 for hinging the transmission assembly 32. In addition, the base 4 can be used for installing armrests, for example, two opposite sides of the bracket are respectively provided with an armrest mounting plate, and the two armrests are respectively fixedly connected to the armrest mounting plates in a screwed or welded mode, so that the armrests 5 can be used as supporting points of hands of a user when the posture of the zero gravity leisure chair is adjusted.

Of course, the specific structure of the base 4 may also adopt other known structures, so long as the stretching and lifting assembly 2, the driving mechanism 3 and the backrest connecting rod 6 are installed, and the utility model is not limited to the specific structure of the base 4.

Referring to fig. 5, in the present embodiment, the transmission assembly 32 includes a rotation rod 321, two first transmission rods 322 and two second transmission rods 323, wherein a first end of each first transmission rod 322 is hinged to a first end of a different second transmission rod 323, so as to form two sets of transmission to correspond to the two extension lifting assemblies 2, respectively, wherein a second end of each first transmission rod 322 is hinged to the base 4, a second end of each second transmission rod 323 is hinged to the base frame connecting plate 22, specifically, a second end of each first transmission rod 322 is hinged to the third hinge lug 44, a second end of each second transmission rod 323 is hinged to the driving hinge post 224, the rotation rod 321 is connected between the two first transmission rods 322, the push rod motor 31 is hinged to the rotation rod 321, and the push rod motor 31 drives the rotation rod 321 to drive the first transmission rods 322 to swing, and the first transmission rods 322 drive the base frame connecting plate 22 to lift through the second transmission rods 323.

When the stretching and lifting assembly 2 and the driving mechanism 3 are combined, when the stretching and lifting assembly 2 stretches from a contracted state, the push rod motor 31 contracts from the longest stroke, and when the push rod motor 31 contracts, the rotating rod 321 is driven to rotate anticlockwise, the rotating rod 321 drives the first transmission rod 322 to rotate, the first transmission rod 322 pushes the seat frame connecting plate 22 to act through the second transmission rod 323, so that the first transmission rod 322 is converted from an initial state to a first state, and then is converted from the first state to a second state, and the adjustment of the lying state of the zero gravity leisure chair is realized.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. A single motor driven zero gravity lounge chair comprising: the seat frame, two extension lifting components for installing the foot pedal, a driving mechanism, a base and a backrest, wherein the two extension lifting components are oppositely arranged and connected between the seat frame and the base, the backrest is hinged between the seat frame and the base,

the driving mechanism comprises a push rod motor and a transmission assembly, the push rod motor is hinged between the base and the transmission assembly, the transmission assembly is hinged between the base and the extension lifting assembly, the push rod motor drives the extension lifting assembly to act through the transmission assembly so that a pedal connecting rod group in the extension lifting assembly extends, the extension lifting assembly drives the seat frame to lift, and the seat frame drives the backrest to turn and tilt.

2. The single motor driven zero gravity leisure chair of claim 1 wherein the extension and lifting assembly includes a base connection plate for connecting a base, a base connection plate for connecting a base frame, a rear swing bar, a front swing bar, a guide slot bar, a lifting bar and the pedal linkage, the rear swing bar being hinged to the rear end of the base connection plate and the rear end of the base connection plate, respectively, the front swing bar being hinged to the base connection plate, the guide slot bar and the lifting bar, respectively, the guide slot bar being further hinged to the front end of the base connection plate, the lifting bar being further hinged to the middle of the base connection plate, and the pedal linkage being hinged to the front end of the base connection plate and the front swing bar, respectively.

3. The single-motor-driven zero-gravity leisure chair according to claim 2, wherein a first front swing hole, a second front swing hole, a third front swing hole and a fourth front swing hole are sequentially formed in the front swing rod, the seat frame connecting plate is hinged to the first front swing hole, the lifting rod is hinged to the second front swing hole, the guide groove rod is hinged to the third front swing hole, and the pedal connecting rod group is hinged to the fourth front swing hole.

4. The single motor driven zero gravity leisure chair according to claim 3 wherein the front pendulum bar is V-shaped and the second front pendulum hole is located at a V-shaped corner of the front pendulum bar.

5. The single-motor-driven zero-gravity leisure chair according to claim 3, wherein the seat frame connecting plate is provided with a limiting protrusion, the limiting protrusion is used for propping against the pedal connecting rod group to limit the continuous extension of the pedal connecting rod group, and after the limiting protrusion is propped against the pedal connecting rod group, the lifting rod swings upwards to lift the seat frame connecting plate.

6. The single motor driven zero gravity leisure chair of claim 5 wherein the channel bar has a kidney shaped aperture and the third front swing aperture has a pin slidably disposed in the kidney shaped aperture, the pin sliding in the kidney shaped aperture and driving the channel bar to rotate when the lifting bar swings upwardly to lift the seat frame connecting plate to change the lifting amplitude of the seat frame connecting plate.

7. The single motor driven zero gravity leisure chair according to claim 5 wherein an abutment surface is provided at one end of the lift bar, the abutment surface being limited against the base web when the seat frame web is lifted to an upper limit position.

8. The single motor driven zero gravity leisure chair according to claim 2 wherein the drive assembly includes a rotating lever, two first drive levers and two second drive levers, each first drive lever having a first end hinged to a different first end of the second drive lever, the first drive lever having a second end hinged to the base, the second drive lever having a second end hinged to the seat frame connecting plate, the rotating lever being connected between the two first drive levers, the push rod motor being hinged to the rotating lever, the push rod motor driving the rotating lever to drive the first drive levers to swing, the first drive levers driving the seat frame connecting plate to rise through the second drive levers.

9. The single motor driven zero gravity leisure chair according to claim 2 wherein the base is provided with two oppositely disposed support plates which are connected to and supported below the base connection plate.

10. A single motor driven zero gravity leisure chair according to any of claims 1 to 9 wherein the backrest is hinged to the base by a backrest link.