CN217429591U - Zero-gravity leisure chair driven by human body power - Google Patents

Abstract

The utility model discloses a zero gravity leisure chaise longue of human power drive, including base supporting component, seat frame subassembly, pedal extension subassembly and back, through extending the subassembly with pedal and hinge in the first pin joint of seat frame subassembly front end concentratedly and base supporting component extension or shrink relatively, and connect in the rear end of seat frame subassembly with the back can be relatively seat frame subassembly upset tilt, divide into two segmentation drive actions with its zero gravity's the adjustment action of the appearance state of lying simultaneously, when human power drive, can apply twice less power and can accomplish the adjustment to the appearance state of lying of zero gravity respectively, the operation of being convenient for, the suitability is strong, and be convenient for sit upright the action.

Description

Zero-gravity leisure chair driven by human body power

Technical Field

The utility model relates to a leisure chaise longue technical field especially relates to a zero gravity leisure chaise longue of human power drive.

Background

Social economy is continuously developed, people pursue living quality more and more, and the requirement on the comfort level of the seat is also higher and more. The zero gravity leisure chair requires that when the chair is in a lying posture state, the included angle between the seat cushion and the backrest is larger, and the center of gravity of a human body is placed at the position of the hip by matching with the extending angles of the pedals and the backrest, and other body parts are not stressed.

Some leisure chairs in the market are driven by motors although having a lying posture state with zero gravity, and the cost is higher.

Therefore, there is a need to develop a new zero gravity leisure chair structure which is driven only by human power and is convenient to operate.

SUMMERY OF THE UTILITY MODEL

In order to overcome above-mentioned prior art an at least defect, the utility model provides a zero gravity leisure chaise longue of human power drive adopts two segmentation drive actions, leans on human power drive to realize the appearance state of lying of zero gravity, the operation of being convenient for, the suitability is strong, and is convenient for sit upright the action.

The utility model discloses a solve the technical scheme that its problem adopted and be:

a human powered zero-gravity leisure chair comprising: a base support assembly; the seat frame assembly is connected with the base support assembly and can be lifted relative to the base support assembly; the pedal extension component is hinged to a first hinge point at the front end of the seat frame component and can extend or retract relative to the base support component; the backrest is connected with the rear end of the seat frame assembly and can be turned and tilted relative to the seat frame assembly; wherein,

under the power driving of a human body, the state of the zero-gravity leisure chair is sequentially changed from an initial state to a first state and a second state so as to form a zero-gravity lying posture state; the initial state is the sitting posture state of the zero-gravity leisure chair; when the initial state is changed to the first state, the front end of the seat frame component is lifted relative to the base supporting component and drives the pedal extension component to extend outwards and upwards; when changing to the second state by first state, the state of pedal extension subassembly remains unchanged, and the back overturns backward to the rear end that drives seat frame subassembly is around first pin joint upwards rotatory lifting.

Further, the seat frame subassembly includes the cushion connecting rod, preceding pendulum rod, back pendulum rod and is used for connecting the support link of base supporting component, first pin joint sets up in the front end of cushion connecting rod, the rear end of cushion connecting rod is provided with the upset subassembly that is used for connecting the back, preceding pendulum rod articulates in the first pin joint of cushion connecting rod and the second pin joint of support link, back pendulum rod articulates in the third hinge joint point of back upset subassembly and support link, pedal extension subassembly articulates in the first pin joint of cushion connecting rod and the fourth pin joint of support link.

Furthermore, the turnover assembly comprises a fixing piece, a first connecting rod, a second connecting rod and a backrest connecting piece, the fixing piece is connected with the cushion connecting rod, the first connecting rod is provided with a fifth hinge point, a sixth hinge point and a seventh hinge point, the cushion connecting rod or the fixing piece is hinged at the fifth hinge point, the rear swing rod is hinged at the sixth hinge point, one end of the second connecting rod is hinged at the seventh hinge point, and the backrest connecting piece is hinged at the fixing piece and the other end of the second connecting rod; the sixth hinge point is located between the fifth hinge point and the seventh hinge point, and when the backrest connecting piece rotates backwards relative to the fixing piece, the first connecting rod drives the cushion connecting rod to rotate upwards and lift around the first hinge point.

Furthermore, an arc-shaped groove extending circumferentially around the sixth hinge point is formed in the first connecting rod, and a bolt slidably arranged in the arc-shaped groove is formed in the rear swing rod.

Further, the seat frame assembly further comprises an elastic piece, and the elastic piece is arranged to elastically drive the backrest to rotate and reset towards the seat surface of the seat frame assembly.

Furthermore, the elastic part is a tension spring, and two ends of the tension spring are respectively connected to the second connecting rod and the backrest connecting piece.

Furthermore, a first limit pin is arranged on the cushion connecting rod or the fixing piece and used for being abutted to the first connecting rod to limit the rotation angle of the backrest during rotation and resetting.

Furthermore, the pedal extension assembly is retracted and accommodated below the seat surface of the seat frame assembly, and the pedal bearing surface of the pedal extension assembly is parallel to the seat surface of the seat frame assembly.

Further, pedal extension subassembly includes pedal support piece, the third connecting rod, the fourth connecting rod, the fifth connecting rod, the sixth connecting rod and seventh connecting rod, wherein, the both ends of third connecting rod articulate respectively in the first end of pedal support piece and fourth connecting rod, the second end of fourth connecting rod articulates in the first pin joint of cushion connecting rod, the both ends of fifth connecting rod articulate respectively in the first end of pedal support piece and sixth connecting rod, the both ends of seventh connecting rod articulate respectively in the second end of sixth connecting rod and the first pin joint of cushion connecting rod, the middle part of fourth connecting rod articulates mutually with the middle part of fifth connecting rod, the middle part of sixth connecting rod articulates in the fourth pin joint of support connecting rod.

Furthermore, a second limit pin is arranged on the pedal support member and used for abutting against the third connecting rod to limit the pedal extension assembly to continue to extend.

Furthermore, the fourth pin joint is located the back upper place of second pin joint, and first pin joint, fourth pin joint and second pin joint are arranged from top to bottom in proper order in vertical direction.

Furthermore, the hand-operated chair further comprises two handrails, wherein the two handrails are respectively connected to two sides of the base supporting component.

Furthermore, the base support assembly comprises a chassis, a rotating shaft and a support, wherein the chassis is used for supporting the ground, the first end of the rotating shaft is inserted into the chassis, and the second end of the rotating shaft is inserted into a shaft sleeve of the support.

Further, the support includes two parallel arrangement's connecting rod and both sides backup pad, and two connecting rods all connect between the backup pad of both sides, and the axle sleeve is connected in the middle part of two connecting rods.

The utility model provides a zero gravity leisure chaise longue has following technological effect:

(1) the pedal extension assembly is centrally hinged to the first hinge point at the front end of the seat frame assembly and can extend or contract relative to the base support assembly, the backrest can be connected to the rear end of the seat frame assembly in a turnover and inclining manner relative to the seat frame assembly, the adjustment action of the zero-gravity lying posture state of the backrest is divided into two-section driving actions, and the zero-gravity lying posture state can be adjusted by applying small force twice during the power driving of a human body, so that the pedal extension assembly is suitable for users with different body types and different physical strength in a wider range;

(2) on the other hand, the two-segment driving action can also facilitate the sitting and standing actions of a user, after the pushing force of the back of the user to the backrest is loosened, the rear end of the seat frame assembly descends, the backrest leans forwards, so as to assist the human body to finish one-segment rising, the gravity center of the human body moves forwards, then the leg part applies force to the pedal extension assembly, the pedal extension assembly contracts, the seat surface of the seat frame assembly descends to a basically horizontal state, and the zero-gravity leisure chair returns to the initial sitting posture state;

(3) in a contraction state, the pedal plate can be parallel to the seat surface of the frame assembly and is in a basically horizontal state, the pedal plate has a larger space distance to the ground, so that the space below the pedal plate is maximized, a larger rest space is provided for legs in a sitting posture state, discomfort feeling of propping against the legs is avoided, the overall thickness can achieve a thinner effect, the pedal plate is more integrated, and the advocated simple and attractive requirements of the modern society are met;

(4) the overall structure design is simple and novel, the expected effect can be achieved by using fewer parts, the installation among the parts is simple and convenient, the process is simple, and the cost is low.

Drawings

Fig. 1 is a schematic perspective view of a zero gravity leisure chair according to an embodiment of the present invention;

fig. 2 is an exploded view of the zero gravity leisure chair according to the embodiment of the present invention;

fig. 3 is a schematic perspective view of the zero-gravity leisure chair of the embodiment of the invention with the armrest removed;

FIG. 4 is a side schematic view of the zero-gravity leisure chair of FIG. 3 in an initial state;

FIG. 5 is a side schematic view of the zero-gravity leisure chair of FIG. 3 in a first state;

FIG. 6 is a side schematic view of the zero-gravity leisure chair of FIG. 3 in a second state;

FIG. 7 is a perspective view of the seat frame assembly and the foot pedal extension assembly of the present invention;

FIG. 8 is an enlarged view of part A of FIG. 7;

FIG. 9 is a side elevational view of the seat frame assembly and footrest extension assembly of FIG. 7 in an initial state;

FIG. 10 is a side elevational view of the seat frame assembly and footrest extension assembly of FIG. 7 in a first position;

FIG. 11 is a side elevational view of the seat frame assembly and footrest extension assembly of FIG. 7 in a second position;

fig. 12 is an exploded view of a base support assembly in accordance with an embodiment of the present invention.

Wherein the reference numerals have the following meanings:

1. a base support assembly; 11. a chassis; 12. a rotating shaft; 13. a support; 131. a shaft sleeve; 132. a connecting rod; 133. side supporting plates; 2. a seat frame assembly; 21. a cushion link; 211. a first hinge point; 212. a first limit pin; 22. turning over the assembly; 221. a fixing member; 222. a first link; 2221. a fifth hinge point; 2222. a sixth hinge point; 2223. a seventh hinge point; 2224. an arc-shaped slot; 223. a second link; 224. a backrest connector; 23. a front swing link; 24. a rear swing rod; 241. a bolt; 25. a bracket connecting rod; 251. a second hinge point; 252. a third hinge point; 253. a fourth hinge point; 254. a third limit pin; 3. a foot pedal extension assembly; 31. a foot support; 32. a third link; 33. a fourth link; 34. a fifth link; 35. a sixth link; 36. a seventh connecting rod; 37. a second limit pin; 4. a backrest; 5. a handrail; 6. an elastic member; 7. a seat frame; 8. a foot pedal.

Detailed Description

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

In the description of the present invention, 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, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 3, the utility model discloses a zero gravity leisure chaise longue of human power drive, include: a base support assembly 1, a seat frame assembly 2, a pedal extension assembly 3, a backrest 4, armrests 5 and an elastic member 6.

In this embodiment, the base support assembly 1 is used to support on the ground to carry the entire zero gravity leisure chair.

In this embodiment, the seat frame assembly 2 is connected to the base support assembly 1 and can be lifted relative to the base support assembly 1, the seat frame assembly 2 may include a left side part, a right side part and a seat frame 7, and the seat frame 7 is connected between the left side part and the right side part, wherein the left side part and the right side part are integrated components having the same transmission function, and both function to connect the base support assembly 1, the pedal extension assembly 3 and the backrest 4, and transmit the motion of the seat frame assembly 2 to the pedal extension assembly 3 and the backrest 4.

In another preferred embodiment, the seat frame assembly 2 may also be provided without the seat frame 7, which is often found in some leisure chair iron frame products provided by some manufacturers producing sales accessories, which are then finally assembled at the end manufacturer or directly fitted with the finished seat bag to produce the final product for normal use by the user.

Based on this, the present invention does not limit whether the seat frame assembly 2 includes the seat frame 7.

Referring to fig. 4 to 6, in the present embodiment, the pedal extension assembly 3 and the seat frame assembly 2 can be driven relatively, and specifically, the pedal extension assembly 3 is hinged to a first hinge point 211 at the front end of the seat frame assembly 2 and can extend or retract relative to the base support assembly 1. In addition to the first hinge point 211, the foot pedal extension assembly 3 can be hinged to the base support assembly 1, or hinged to a component of the seat frame assembly 2 fixed relative to the base support assembly 1, so that the foot pedal extension assembly 3 can extend or contract along with the seat frame assembly 2 during the raising or lowering action of the seat frame assembly 2 relative to the base support assembly 1, and the seat frame assembly 2 does not drive the foot pedal extension assembly 3 to act when the seat frame assembly 2 rotates around the first hinge point 211, so as to keep the state of the foot pedal extension assembly 3 unchanged. Specifically, the two pedal extension assemblies 3 are connected to the front end of the left side member and the front end of the right side member of the seat frame assembly 2, respectively, and the movable ends of the two pedal extension assemblies 3 can be connected to the pedal plate 8.

Like the seat frame 7, some manufacturers of the production and sale accessories may not include the footrest 8 in the leisure chair iron frame product, and the product is finally assembled with the footrest 8 at the terminal manufacturer. Based on this, the utility model discloses do not restrict to being connected with running-board 8 between two pedal extension subassemblies 3.

In the present embodiment, the backrest 4 is connected to the rear end of the seat frame assembly 2 and can tilt and tilt with respect to the seat frame assembly 2, specifically, the backrest 4 is connected to the rear end of the left side component and the rear end of the right side component of the seat frame assembly 2.

On the basis of the above scheme, the zero gravity leisure chair of the utility model also has the following action states: under the power driving of human body, the state of the zero-gravity leisure chair is changed from the initial state to the first state and the second state in sequence, so as to form a lying posture state with zero gravity.

Wherein the initial state is the sitting posture state of the zero-gravity leisure chair; when the initial state is changed to the first state, the front end of the seat frame assembly 2 is lifted relative to the base support assembly 1, and drives the pedal extension assembly 3 to extend outwards and upwards, in the process, the backrest 4 is fixed relative to the seat frame assembly 2, and along with the lifting of the front end of the seat frame assembly 2, the seat surface of the seat frame assembly 2 inclines upwards, so that the backrest 4 is driven to incline backwards; when the first state is changed to the second state, the state of the pedal extension assembly 3 is kept unchanged, the backrest 4 is turned backwards, and the rear end of the seat frame assembly 2 is driven to rotate upwards and lift around the first hinge point 211.

It is understood that the first state is: the intermediate state between the sitting posture state of the zero-gravity leisure chair and the lying posture state of zero gravity, in the intermediate state, the pedal extension component 3 is unfolded, the front end of the seat frame component 2 is lifted, the backrest 4 tilts backwards along with the inclination of the seat frame component 2, and the included angle between the backrest 4 and the seat frame component 2 is kept in a basically vertical state; the second state is: the zero gravity leisure chair has a zero gravity lying posture state.

Indeed, in another preferred embodiment, the backrest 4 may also be turned relative to the seat frame assembly 2 to a lesser extent due to the force when transitioning from the initial state to the first state, and of course, the relative movement between the backrest 4 and the seat frame assembly 2 is not the key point of the movement when transitioning from the initial state to the first state.

Thus, in the zero-gravity leisure chair, the pedal extension component 3 is centrally hinged to the first hinge point 211 at the front end of the seat frame component 2 and can extend or contract relative to the base support component 1, the backrest 4 can be connected to the rear end of the seat frame component 2 in a turnover and inclining manner relative to the seat frame component 2, and meanwhile, the adjustment action of the zero-gravity lying posture is divided into two-section driving actions, and when the zero-gravity lying posture is driven by human power, the zero-gravity lying posture can be adjusted by applying small force twice, so that the zero-gravity lying posture adjustment chair is suitable for users with different body types and physical strength in a wider range; on the other hand, the two-segment driving action can also facilitate the sitting and standing actions of the user, after the pushing power of the back of the user to the backrest 4 is loosened, the rear end of the seat frame component 2 descends, the backrest 4 leans forward to assist the human body to finish one-segment rising, so that the gravity center of the human body moves forwards, then the leg part applies force to the pedal extension component 3, the pedal extension component 3 contracts, the seat surface of the seat frame component 2 descends to a basically horizontal state, and the zero-gravity leisure chair returns to the initial sitting posture state.

In order to better drive the zero-gravity leisure chair to complete the action in the first stage by using the power of the human body, preferably, when the initial state is changed to the first state, the rear end of the seat frame assembly 2 descends relative to the base support assembly 1 and moves backwards, so that the seat frame assembly 2 can be better driven to act by the gravity of the human body concentrated on the hip, and the zero-gravity leisure chair can be kept in the first state for a long time.

In this embodiment, the two armrests 5 are fixedly connected to the two sides of the base supporting component 1 by screwing or welding, so that the armrests 5 can be used as supporting points for the hands of the user when the human body applies power to adjust the posture of the zero-gravity leisure chair, so as to facilitate the better exertion of force by the human body.

Referring to fig. 12, in the present embodiment, the base support assembly 1 includes a chassis 11 for supporting the ground, a rotating shaft 12 and a bracket 13, wherein a first end of the rotating shaft 12 is inserted into the chassis 11, and a second end of the rotating shaft 12 is inserted into a shaft sleeve 131 of the bracket 13. Specifically, the bracket 13 includes two connecting rods 132 and two side supporting plates 133, which are arranged in parallel, wherein the two connecting rods 132 are connected between the two side supporting plates 133, and the shaft sleeve 131 is connected to the middle portions of the two connecting rods 132, and wherein the side supporting plates 133 can be used for mounting the armrest 5 and the seat frame assembly 2.

Referring to fig. 7 and 9, in the present embodiment, the seat frame assembly 2 includes a seat cushion link 21, a front swing link 23, a rear swing link 24 and a support link 25 for connecting the base support assembly 1, specifically, the support link 25 is fixedly connected to the side support plate 133 through a bolt, the rear end of the seat cushion link 21 is provided with an overturning assembly 22 for connecting the backrest 4, the first hinge point 211 is disposed at the front end of the seat cushion link 21, the front swing link 23 is hinged to the first hinge point 211 of the seat cushion link 21 and the second hinge point 251 of the support link 25, the rear swing link 24 is hinged to the third hinge point 252 of the backrest overturning assembly 22 and the support link 25, and the pedal extension assembly 3 is hinged to the first hinge point 211 of the seat cushion link 21 and the fourth hinge point 253 of the support link 25.

It is understood that the seat cushion link 21, the front swing link 23, the rear swing link 24, the bracket link 25 and the flip assembly 22 are provided in two and divided into two groups, and the seat cushion link 21, the front swing link 23, the rear swing link 24, the bracket link 25 and the flip assembly 22 in each group are combined to form a main body structure of a left side component or a right side component of the seat frame assembly 2.

So set up, when upset subassembly 22 is fixed motionless relative to cushion connecting rod 21, preceding pendulum rod 23, back pendulum rod 24 and support link 25 constitute four-bar linkage structure, thereby make cushion connecting rod 21 can follow the swing of predetermined orbit relative to support link 25, and because pedal extension subassembly 3 articulates in the first pin joint 211 of cushion connecting rod 21 and the fourth pin joint 253 of support link 25, when first pin joint 211 of cushion connecting rod 21 produced relative position change relative to support link 25, pedal extension subassembly 3 will receive the drive thereby realizes extending or contracting, thereby realize the transition between initial condition and the first state with this.

When the pedal extension component 3 is constrained and can not move any more, or the front swing rod 23 is constrained and can not swing, the power of human body overcomes the constraint force acting between the turnover component 22 and the cushion connecting rod 21, so that the turnover component 22, the cushion connecting rod and the rear swing rod generate relative motion, and the cushion connecting rod rotates around the first hinge point, thereby realizing the transformation from the first state to the second state.

In the present embodiment, the elastic member 6 is provided to elastically urge the backrest 4 to rotationally return toward the seat surface of the seat frame assembly 2, based on which the restraining force acting between the reclining assembly 22 and the seat cushion link 21 can be provided by the elastic member 6.

Of course, in other embodiments, the restraining force acting between the recliner assembly 22 and the seat cushion link 21 may be provided by static friction between the two, or other known structures.

Referring to fig. 7, 8 and 11, in the present embodiment, the flipping module 22 includes a fixing member 221, a first link 222, a second link 223 and a backrest link 224, the fixing member 221 is fixedly connected to the seat cushion link 21 by welding or screwing, the first link 222 is provided with a fifth hinge point 2221, a sixth hinge point 2222 and a seventh hinge point 2223, the seat cushion link 21 or the fixing member 221 is hinged to the fifth hinge point 2221, the swinging back lever 24 is hinged to the sixth hinge point 2222, one end of the second link 223 is hinged to the seventh hinge point 2223, the backrest link 224 is hinged to the other ends of the fixing member 221 and the second link 223, so that the fixing member 221, the first link 222, the second link 223 and the backrest link 224 can also form a four-link structure, and when human back power acts on the backrest 4, the backrest link 224 can be driven to act and drive the first link 222 and the second link 223 to move relative to the fixing member 221, in the process, since the state of the footrest extension assembly 3 remains unchanged after the first state, which keeps the front swing link 23 and the rear swing link 24 stationary with respect to the bracket link 25, the first link 222 rotates about the sixth hinge point 2222 and drives the seat cushion link 21 to rotate about the first hinge point 211 through the fifth hinge point 2221.

Specifically, the sixth hinge point 2222 is located between the fifth hinge point 2221 and the seventh hinge point 2223, and when the backrest connecting member 224 rotates backward relative to the fixing member 221, the first link 222 drives the seat cushion link 21 to rotate and lift upward around the first hinge point 211.

By the arrangement, the whole structure of the seat frame assembly 2 can be simplified, the number of parts is reduced, and cost is effectively reduced.

Specifically, in the initial state, the rear swing link 24 is inclined toward the footrest extension assembly 3 at an angle of between 80 degrees and 90 degrees with respect to the horizontal. To ensure that normal abutting forces on the backrest 4 in the sitting position do not result in a change of posture of the zero gravity leisure chair.

Specifically, referring to fig. 8, the first link 222 is provided with an arc-shaped groove 2224 circumferentially extending around the sixth hinge point 2222, and the rear swing link 24 is provided with a pin 241 slidably disposed in the arc-shaped groove 2224, so as to limit the relative rotation angle range between the first link 222 and the rear swing link 24.

In particular, referring to fig. 11, the bracket link 25 may further include a third limiting pin 254, and the third limiting pin 254 is used for abutting against the first link 222 to limit the angle of rotation when the backrest 4 rotates backwards.

Referring to fig. 7, in the present embodiment, the elastic element 6 of the present embodiment may be a tension spring, and two ends of the tension spring are respectively connected to the second link 223 and the backrest connector 224, so as to facilitate the integration of the elastic element 6 into the seat frame assembly 2. It is understood that the tension spring may also be connected between the fixing member 221 and the second link 223, or between the fixing member 221 and the backrest link 224, or between the cushion link 21 and the backrest link 224, etc. to indirectly or directly elastically drive the backrest 4 to rotate and return.

Of course, in other preferred embodiments, the elastic member 6 may also be a torsion spring, a spring, an elastic pull belt, or the like capable of providing an elastic force.

Particularly, referring to fig. 8, the seat cushion link 21 or the fixing member 221 is provided with a first limit pin 212, and the first limit pin 212 is used for abutting against the first link 222 to limit the rotation angle of the backrest 4 when the backrest rotates to return, so as to prevent the backrest 4 from excessively leaning forward and pressing on the human body.

Referring to fig. 4, in the present embodiment, preferably, the foot pedal extension assembly 3 is retracted and accommodated under the seat surface of the seat frame assembly 2, and the foot pedal bearing surface of the foot pedal extension assembly 3 is parallel to the seat surface of the seat frame assembly 2, so that after the foot pedal 8 is mounted on the foot pedal extension assembly 3, in the retracted state, the foot pedal 8 can be in a substantially horizontal state, and the foot pedal 8 has a large spatial distance to the ground, so as to maximize the space thereunder, thereby facilitating a larger resting space for the legs in the sitting posture without uncomfortable feeling against the legs. And the whole thickness of the zero-gravity leisure chair can achieve the effect of being thinner, the zero-gravity leisure chair looks more integrated, and the requirement of conciseness and beauty advocated by modern society is met.

Referring to fig. 7, 9 and 10, in particular, the pedal extension assembly 3 includes a pedal support 31, a third link 32, a fourth link 33, a fifth link 34, a sixth link 35 and a seventh link 36, wherein two ends of the third link 32 are respectively hinged to first ends of the pedal support 31 and the fourth link 33, a second end of the fourth link 33 is hinged to a first hinge point 211 of the cushion link 21, two ends of the fifth link 34 are respectively hinged to first ends of the pedal support 31 and the sixth link 35, two ends of the seventh link 36 are respectively hinged to a second end of the sixth link 35 and a first hinge point 211 of the cushion link 21, a middle portion of the fourth link 33 is hinged to a middle portion of the fifth link 34, and a middle portion of the sixth link 35 is hinged to a fourth hinge point 253 of the support link 25.

Wherein, the fourth link 33 and the seventh link 36 are used as two power rods in the foot-operated extension assembly 3, and both the two power rods are hinged on the first hinge point 211 of the seat cushion link 21, so that the seat frame assembly 2 is driven by human power to move, the seat cushion link 21 swings relative to the bracket link 25 through the action of the front swing link 23 and the rear swing link 24, the seat cushion link 21 sequentially drives the seventh link 36, the sixth link 35, the fifth link 34 and the foot-operated support 31 through the first hinge point 211, and simultaneously the seat cushion link 21 further sequentially drives the fourth link 33, the third link 32 and the foot-operated support 31 through the first hinge point 211, and the limitation of the sixth link 35 by the fourth hinge point 253 and the cross-hinge of the fourth link 33 and the fifth link 34 are combined, so that the movement of the foot-operated extension assembly 3 is only influenced by the position change of the first hinge point 211, that can be understood, the pedal extension assembly 3 is only activated when the position of the first hinge point 211 changes relative to the bracket link 25, and the pedal extension assembly 3 remains unaffected when the backrest 4 rotates the seat cushion link 21 in the seat frame assembly 2 about the first hinge point 211.

More importantly, the fourth hinge point 253 is located at the rear upper portion of the second hinge point 251, and in the vertical direction, the first hinge point 211, the fourth hinge point 253 and the second hinge point 251 are sequentially arranged from top to bottom, so that in the retracted state of the foot-operated extension assembly 3, the third connecting rod 32, the fifth connecting rod 34 and the seventh connecting rod 36 can be retracted to a position substantially parallel to the seat cushion connecting rod 21, and further the foot-operated bearing surface of the foot-operated supporting member 31 and the seat surface of the seat frame assembly 2 are driven to be substantially parallel to each other.

Through the setting of each connecting rod in the above-mentioned scheme, use less spare part just can reach anticipated effect, seat frame subassembly 2 and pedal extension subassembly 3 simple installation, simple process, it is with low costs.

In particular, referring to fig. 10, a second limit pin 37 is disposed on the pedal support 31, and the second limit pin 37 is used for abutting against the third connecting rod 32 to limit the pedal extension assembly 3 from extending further. In addition, the second limit pin 37 is provided to the pedal support 31, so that it is advantageous in that it does not interfere with the mutual folding between the other links at the time of contraction.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by combining the above technical features at will. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims (14)

1. The utility model provides a zero gravity leisure chaise longue of human power drive which characterized in that includes:

a base support assembly;

the seat frame assembly is connected with the base support assembly and can be lifted relative to the base support assembly;

the pedal extension assembly is hinged to a first hinge point at the front end of the seat frame assembly and can extend or retract relative to the base support assembly;

the backrest is connected to the rear end of the seat frame assembly and can be turned and tilted relative to the seat frame assembly; wherein,

under the power driving of a human body, the state of the zero-gravity leisure chair is sequentially changed from an initial state to a first state and a second state so as to form a zero-gravity lying posture state;

the initial state is the sitting posture state of the zero-gravity leisure chair;

when the initial state is changed to the first state, the front end of the seat frame component is lifted relative to the base support component, and drives the pedal extension component to extend outwards and upwards;

when the state of the pedal extension assembly is changed from the first state to the second state, the backrest turns backwards and drives the rear end of the seat frame assembly to rotate upwards and lift around the first hinge point.

2. The zero-gravity leisure chair according to claim 1, wherein the seat frame assembly comprises a cushion connecting rod, a front swing rod, a rear swing rod and a support connecting rod for connecting the base support assembly, the first hinge point is arranged at the front end of the cushion connecting rod, the rear end of the cushion connecting rod is provided with a turnover assembly for connecting the backrest, the front swing rod is hinged to a first hinge point of the cushion connecting rod and a second hinge point of the support connecting rod, the rear swing rod is hinged to a third hinge point of the backrest turnover assembly and the support connecting rod, and the pedal extension assembly is hinged to a first hinge point of the cushion connecting rod and a fourth hinge point of the support connecting rod.

3. The zero-gravity leisure chair according to claim 2, wherein the turnover assembly comprises a fixing piece, a first connecting rod, a second connecting rod and a backrest connecting piece, the fixing piece is connected to the cushion connecting rod, the first connecting rod is provided with a fifth hinge point, a sixth hinge point and a seventh hinge point, the cushion connecting rod or the fixing piece is hinged to the fifth hinge point, the rear swing rod is hinged to the sixth hinge point, one end of the second connecting rod is hinged to the seventh hinge point, and the backrest connecting piece is hinged to the fixing piece and the other end of the second connecting rod; the sixth hinge point is located between the fifth hinge point and the seventh hinge point, and when the backrest connecting piece rotates backwards relative to the fixing piece, the first connecting rod drives the cushion connecting rod to rotate upwards and lift around the first hinge point.

4. The zero-gravity leisure chair according to claim 3, wherein the first connecting rod is provided with an arc-shaped groove extending circumferentially around the sixth hinge point, and the rear swing link is provided with a bolt slidably arranged in the arc-shaped groove.

5. The zero-gravity leisure chair according to claim 3 wherein the seat frame assembly further comprises a resilient member configured to resiliently urge the backrest to rotationally return toward the seating surface of the seat frame assembly.

6. The zero-gravity leisure chair according to claim 5 wherein the elastic member is a tension spring, and both ends of the tension spring are connected to the second link and the backrest connecting member, respectively.

7. The zero-gravity leisure chair according to claim 6, wherein a first limit pin is arranged on the cushion connecting rod or the fixing piece, and the first limit pin is used for abutting against the first connecting rod to limit the rotation angle of the backrest when the backrest is rotated and reset.

8. The zero-gravity leisure chair according to claim 2 wherein the foot extension assembly is retracted and housed below the seat surface of the seat frame assembly and the foot bearing surface of the foot extension assembly is parallel to the seat surface of the seat frame assembly.

9. The zero-gravity leisure chair according to claim 8, wherein the pedal extension assembly comprises a pedal support member, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod and a seventh connecting rod, wherein two ends of the third connecting rod are respectively hinged to first ends of the pedal support member and the fourth connecting rod, a second end of the fourth connecting rod is hinged to a first hinged point of the cushion connecting rod, two ends of the fifth connecting rod are respectively hinged to first ends of the pedal support member and the sixth connecting rod, two ends of the seventh connecting rod are respectively hinged to a second end of the sixth connecting rod and a first hinged point of the cushion connecting rod, a middle part of the fourth connecting rod is hinged to a middle part of the fifth connecting rod, and a middle part of the sixth connecting rod is hinged to a fourth hinged point of the support connecting rod.

10. The zero-gravity leisure chair according to claim 9 wherein a second limit pin is provided on the foot support for abutting against the third link to limit the continued extension of the foot extension assembly.

11. The zero-gravity leisure chair according to claim 9 wherein the fourth hinge point is located above and behind the second hinge point, and the first hinge point, the fourth hinge point and the second hinge point are arranged in order from top to bottom in the vertical direction.

12. The zero-gravity leisure chair according to claim 1 further comprising two armrests connected to either side of the base support assembly.

13. The zero-gravity leisure chair according to claim 1 wherein the base support assembly comprises a chassis for supporting the ground, a rotating shaft and a bracket, wherein a first end of the rotating shaft is inserted into the chassis, and a second end of the rotating shaft is inserted into a shaft sleeve of the bracket.

14. The zero gravity leisure chair according to claim 13 wherein the bracket comprises two parallel connecting rods and two side support plates, the two connecting rods are connected between the two side support plates, and the bushing is connected to the middle of the two connecting rods.

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