CN115153243B - Multifunctional sofa motion state conversion mechanism - Google Patents
Multifunctional sofa motion state conversion mechanism Download PDFInfo
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- CN115153243B CN115153243B CN202210568078.8A CN202210568078A CN115153243B CN 115153243 B CN115153243 B CN 115153243B CN 202210568078 A CN202210568078 A CN 202210568078A CN 115153243 B CN115153243 B CN 115153243B
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- seat
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C17/00—Sofas; Couches; Beds
- A47C17/86—Parts or details for beds, sofas or couches only not fully covered in a single one of the sub-groups A47C17/02, A47C17/04, A47C17/38, A47C17/52, A47C17/64, or A47C17/84; Drawers in or under beds
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C17/00—Sofas; Couches; Beds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nursing (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention discloses a multifunctional sofa motion state conversion mechanism, which is characterized in that two sets of different four-bar mechanisms are formed by a base, a transmission connecting rod, a seat connecting piece, a seat push-pull rod and a seat ejector rod in different driving directions of an actuator, namely a basic four-bar mechanism and an auxiliary standing four-bar mechanism, wherein in the basic four-bar mechanism, the base and the seat connecting piece are relatively static, the seat ejector rod rotates forwards relative to the seat connecting piece, but cannot be transmitted to the seat connecting piece, and other connecting bar mechanisms connected with the transmission connecting rod move at the moment to realize respective functions without interfering with the seat connecting piece; in the auxiliary standing four-bar mechanism, the seat ejector rod and the seat connecting piece are relatively static, at the moment, the seat connecting piece rotates together with the seat ejector rod relative to the base, the rear end of the seat connecting piece is lifted up, namely, the seat surface is inclined and lifts the buttocks of a user, and the auxiliary standing four-bar mechanism provides assistance for the user to stand up from the sofa. Therefore, the sofa has two sets of functions at the same time, and the structure is optimized.
Description
Technical Field
The invention relates to the field of furniture, in particular to a multifunctional sofa motion state conversion mechanism.
Background
The old man sofa is evolved from an ordinary electric sofa, the ordinary sofa generally has several functions of sitting, footrest and lying, the requirement of general people on comfort can be well met, the old man sofa is additionally provided with an auxiliary standing function on the basis of the ordinary sofa, and the old man sofa is realized by lifting the seat upwards, so that a plurality of users with inconvenient legs and feet, such as old people, can lift up from the sofa more easily.
The sofa for the old generally realizes the lifting of the seat surface by two methods, wherein one method is to lift up the whole electromechanical stretching device almost by an electric push rod, in the method, the function of a common sofa is realized by one electric push rod, the function of standing assistance is realized by another independent electric push rod, the requirement on the electric push rod is high, the cost is increased by phase change, and the whole process is relatively slow; the seat is lifted through the rollers and the like so as to enable the rear end of the seat to be lifted, the seat surface lifting is realized, the working process is relatively faster and simpler, but because the force for lifting the seat surface is relatively large when the seat is lifted, the roller is more and more serious along with the increase of the use times and time, and the service life of the sofa is influenced.
Therefore, how to use a set of mechanism can realize the general function and the auxiliary standing function of the sofa and solve the problems, and the aim of a plurality of manufacturers is achieved.
Disclosure of Invention
In order to solve the technical problems, the invention provides a multifunctional sofa motion state conversion mechanism, wherein a base, a transmission connecting rod, a seat connecting piece, a seat push-pull rod and a seat ejector rod form two different sets of four-bar mechanisms in different driving directions of an actuator, and the basic four-bar mechanism is used for general functions of a sofa, such as sitting, footrest and lying, so as to provide a foundation for the general functions of the sofa; the auxiliary standing four-bar mechanism is used for the auxiliary standing function of the sofa, the same set of mechanism can be used for realizing the general function of the sofa and the auxiliary standing function, and the structure is more reasonable; and the rear end of the seat surface is driven to be lifted up in a connecting rod transmission mode, so that abrasion is avoided, and the structure is more stable.
The technical scheme of the invention is realized as follows:
a multi-functional sofa motion state changing mechanism, comprising:
a base, which is a frame structure and is configured as a main body support of the mechanism;
the transmission connecting rod is rotationally connected with the base;
the actuator is rotatably arranged on the base and drives the transmission connecting rod to rotate relative to the base;
the seat part connecting piece is arranged in a rotating way relative to the base;
the seat push-pull rod is rotationally connected to the transmission connecting rod;
the seat ejector rod is rotatably arranged on the seat connecting piece and is rotatably connected with the seat push-pull rod;
the base, the transmission connecting rod, the seat push-pull rod, the seat ejector rod and the seat connecting piece form two sets of four-bar mechanisms, namely a basic four-bar mechanism and an auxiliary standing four-bar mechanism; the base four-bar mechanism comprises three movable base moving bars and a fixed base fixed bar, the actuator drives the transmission connecting bars to rotate, when the seat push-pull rod drives the seat push-pull rod to rotate forwards on the seat connecting piece, the transmission connecting bars, the seat push-pull rod, the base and the seat connecting piece form the base four-bar mechanism, in the base four-bar mechanism, the base and the seat connecting piece are relatively static and jointly form the base fixed bar, and the transmission connecting bars, the seat push-pull rod and the seat push-pull rod are three base moving bars; in the auxiliary standing four-bar mechanism, the seat ejector rod and the seat connecting piece are relatively static and jointly form one auxiliary standing moving rod, the transmission connecting rod and the seat push-pull rod are the other two auxiliary standing moving rods, the base is the auxiliary standing fixed rod, at the moment, the seat ejector rod drives the seat connecting piece to rotate relative to the base, and the rear end of the seat connecting piece is lifted up.
The base, the transmission connecting rod, the seat connecting piece, the seat push-pull rod and the seat ejector rod form two sets of different four-bar mechanisms under different driving directions of the actuator, namely a basic four-bar mechanism and an auxiliary standing four-bar mechanism, wherein the base and the seat connecting piece are relatively static, the seat ejector rod rotates forwards relative to the seat connecting piece and cannot be transmitted to the seat connecting piece, and at the moment, other bar mechanisms (such as a leg rest, a backrest and the like) connected with the transmission connecting rod move to realize respective functions without interfering with the seat connecting piece; that is, when the sofa is used for sitting, footrest, lying and other functions, the rear end of the seat part connecting piece cannot be tilted, the seat part is kept approximately horizontal, the buttocks of a user are stably supported, and the user sits or lies on the seat part connecting piece, so that the foundation four-bar mechanism provides a foundation for the sofa to realize general functions; in the auxiliary standing four-bar mechanism, the seat ejector rod and the seat connecting piece are relatively static, at the moment, the seat connecting piece rotates together with the seat ejector rod relative to the base, the rear end of the seat connecting piece is lifted up, namely, the seat surface is inclined and lifts the buttocks of a user, and the auxiliary standing four-bar mechanism provides assistance for the user to stand up from a sofa; through the mechanism, the sofa has the basis for realizing the general function and the function of assisting in standing, and has smart and reasonable structure; in addition, the mechanism drives the rear end of the seat surface to lift up in a connecting rod transmission mode, and compared with the roller serving as a lifting piece, structural abrasion is avoided, and the connecting rod structure is more stable.
Preferably, the seat ejector rod is convexly provided with a jacking lug, the seat connecting piece is provided with an attack plate, and the jacking lug is positioned in front of the attack plate; when the seat ejector rod drives the seat connecting piece to rotate relative to the base, the jacking lug is attached to the catering plate and acts on the catering plate by the jacking lug to jack up the seat connecting piece. In the basic four-bar mechanism, no effect exists between the jacking lug and the welcome plate, namely, the jacking lug is separated from the welcome plate or the jacking lug does not generate acting force on the welcome plate; in the auxiliary standing four-bar mechanism, the jacking lug acts on the catering plate and generates enough force on the catering plate so as to enable the rear end of the seat connecting piece to tilt.
Preferably, the lifting lug protrudes from the seat ejector rod toward the middle of the base.
Preferably, the seat connecting member is provided with a first seat mounting plate and a second seat mounting plate protruding towards the middle of the base, the first seat mounting plate is positioned in front of the second seat mounting plate, and the front end of the first seat mounting plate extends downwards to form the meeting plate. The windward plate is extended from the first seat mounting plate, and the structure is simple and reasonable.
Preferably, the angle between the windward plate and the first seat mounting plate is 90 °. The first seat mounting plate is parallel to the seat connecting piece, and an included angle of 90 degrees is formed between the part of the opposite-to-welting plate serving as the seat connecting piece and welting the jacking convex block and the first seat mounting plate, so that the welting convex block can be welted.
Preferably, the jacking protruding blocks and the catering plates are located below the rotating connection points of the seat ejector rods and the seat connecting piece.
Preferably, the actuator is an electric push rod, when the electric push rod stretches, the transmission connecting rod rotates upwards and backwards at a part above a rotating connection point of the electric push rod and the base, after being transmitted by the seat push-pull rod and the seat push rod, the jacking convex block is abutted on the meeting plate, and the rear end of the seat connecting piece is lifted up; when the electric push rod is contracted, the transmission connecting rod rotates forwards and downwards at the part above the rotating connecting point of the transmission connecting rod and the base, the seat push-pull rod is driven to move forwards and downwards, the seat push rod rotates forwards relative to the seat connecting piece along with the transmission connecting rod, and the rear end of the seat connecting piece rotates downwards until the jacking convex block is separated from the catering plate.
Preferably, the transmission connecting rod is approximately L-shaped and is rotatably connected with the base at the corner of the transmission connecting rod, and the seat push-pull rod is rotatably connected with the front end part of the transmission connecting rod. The L-shaped transmission connecting rod can avoid other connecting rods and simultaneously enable the connecting rods which are rotationally connected to different positions to generate different movement tracks.
Preferably, the base is fixedly provided with an upward protruding connecting plate, and the transmission connecting rod is rotationally connected with the connecting plate. The shape of base has been simplified in the setting of connecting plate, practices thrift the processing cost of base, and other connecting rods can be dodged to single convex connecting portion simultaneously.
The design starting point, the idea and the beneficial effects of the invention adopting the technical scheme are as follows:
firstly, the multifunctional sofa motion state conversion mechanism can switch the sofa motion state, so that a plurality of functions of the sofa are realized, wherein the functions comprise a general function (sitting, footrest and lying) and an auxiliary standing function of the sofa, the mechanism can switch between the sofa motion state realizing the general function and the sofa motion state realizing the auxiliary standing function, and the realization mode is that:
the base, the transmission connecting rod, the seat connecting piece, the seat push-pull rod and the seat ejector rod form two sets of different four-bar mechanisms under different driving directions of the actuator, namely a basic four-bar mechanism and an auxiliary standing four-bar mechanism, wherein the base and the seat connecting piece are relatively static, the seat ejector rod rotates forwards relative to the seat connecting piece and cannot be transmitted to the seat connecting piece, and at the moment, other bar mechanisms (such as a leg rest, a backrest and the like) connected with the transmission connecting rod move to realize respective functions without interfering with the seat connecting piece; that is, when the sofa is used for sitting, footrest, lying and other functions, the rear end of the seat part connecting piece cannot be tilted, the seat part is kept approximately horizontal, the buttocks of a user are stably supported, and the user sits or lies on the seat part connecting piece, so that the foundation four-bar mechanism provides a foundation for the sofa to realize general functions; in the auxiliary standing four-bar mechanism, the seat ejector rod and the seat connecting piece are relatively static, at the moment, the seat connecting piece rotates together with the seat ejector rod relative to the base, the rear end of the seat connecting piece is lifted up, namely, the seat surface is inclined and lifts the buttocks of a user, and the auxiliary standing four-bar mechanism provides assistance for the user to stand up from the sofa.
In addition, as the sofa has the foundation for realizing the general function and the function of assisting in standing by the set of mechanisms, compared with the mechanical stretching device in the existing sofa, the mechanism has ingenious and reasonable structure; and the mechanism drives the rear end of the seat surface to lift up in a connecting rod transmission mode, so that structural abrasion is avoided compared with the roller serving as a lifting piece, the connecting rod structure is more stable, the whole movement of the mechanism is more stable, and the service life is prolonged.
Drawings
FIG. 1 is a schematic perspective view of a sofa in a normal sitting position according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a mechanical stretcher in a normal sitting position according to an embodiment of the present invention;
FIG. 3 is a side view of the mechanical stretcher unit of the present invention in a normal sitting position in an embodiment;
FIG. 4 is a schematic view of the basic four bar linkage in the mechanical stretcher unit according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of the motion principle of the basic four-bar linkage of FIG. 4;
FIG. 6 is a schematic view of the structure of the four bar linkage of the mechanical stretcher unit for assisting in standing in the embodiment of the invention;
FIG. 7 is a schematic diagram of the motion principle of the auxiliary standing four-bar linkage of FIG. 6;
FIG. 8 is a schematic diagram showing a second perspective structure of a sofa in a normal sitting state according to an embodiment of the present invention;
FIG. 9 is a schematic diagram showing a mechanical stretching device in a normal sitting position in a second embodiment of the present invention;
FIG. 10 is a schematic perspective view of the first push-pull rod, the second push-pull rod, and the seat push-pull rod rotatably connected to the transmission link in an embodiment of the present invention;
FIG. 11 is a schematic perspective view of a sofa in an assisted standing position according to an embodiment of the present invention;
FIG. 12 is a schematic perspective view of a mechanical stretcher in an assisted standing position according to an embodiment of the present invention;
FIG. 13 is a side view of the mechanical stretcher unit in an assisted stand condition in an embodiment of the present invention;
a side view of a four bar linkage of the seat link motion;
fig. 14 is a schematic perspective view of a sofa in a lying state according to an embodiment of the present invention;
FIG. 15 is a schematic perspective view of the mechanical stretcher in the lying state in the embodiment of the present invention;
FIG. 16 is a side view of the mechanical stretcher unit in the lying state in an embodiment of the invention;
FIG. 17 is a schematic view of the seat link motion four-bar linkage of the mechanical stretcher unit in an embodiment of the present invention;
FIG. 18 is a schematic diagram of the motion principle of the seat link motion four-bar linkage of FIG. 17;
FIG. 19 is a schematic view of the structure of the four bar linkage of the mechanical stretcher unit in which the backrest links are moved in accordance with the present invention;
fig. 20 is a schematic view of the principle of motion of the four bar linkage of the backrest link of fig. 19.
The reference numerals are as follows: a seat 2; an armrest 3; a mechanical stretching device 4; a mechanical stretching unit 4a; a base 5; an actuator 6; a transmission link 7; an upper portion 7a; a lower portion 7b; a backrest connecting member 8; a seat connection 9; a footrest connector 10; square tubes 11; a seat link 12; a first push-pull rod 14; lifting the connecting rod 15; a footrest push-pull rod 16; a first footrest link 17; a second footrest link 18; a third footrest link 19; a fourth footrest link 20; a fifth footrest link 21; a second push-pull rod 22; a first backrest link 23; a second backrest link 24; a driven link 25; a seat return spring 26; a first spring fixing post 27; a support 29; a limiting plate 30; a first seat mounting plate 31; a second seat mounting plate 32; an engagement plate 33; a second spring fixing post 34; a third spring fixing post 35; a leg rest return spring 36; a seat push-pull rod 37; a seat post 38; a leg rest 39; jacking up the bump 40; a base motion bar 41; a base fixed rod 42; a standing-assist movement bar 43; a standing-assist fixation bar 44; and a connection plate 45.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
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 described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, the term "at least one" refers to 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 specific embodiments of the present invention are as follows:
as shown in fig. 1-4, the present invention provides a multi-functional sofa motion state changing mechanism, comprising a base 5, a transmission link 7, an actuator 6, a seat connecting piece 9, a seat push-pull rod 37 and a seat push rod 38, which is a part of a mechanical stretching device 4 and is used in a sofa; the sofa also comprises a backrest (not shown), a foot rest 39, a seat 2 and two armrests 3 positioned on the left side and the right side of the backrest, the foot rest 39 and the seat 2, wherein a mechanical stretching device 4 is fixedly arranged between the two armrests 3 in a lifting way, and the backrest, the foot rest 39 and the seat 2 are all arranged on the mechanical stretching device 4; the backrest is configured to support the back of a human body, the seat 2 is configured to support the buttocks of the human body, the leg rest part 39 is configured to be folded under the seat 2 when the leg rest part 39 is contracted, the leg rest part 39 is configured to support the legs of the human body when the leg rest part 39 is extended, and the armrest 3 is configured to support the arms of the human body; the movement of the mechanical stretching device 4 is mainly realized by mirroring the movement of the mechanical stretching units 4a arranged at two sides of the base 5, and the actuator 6 is used for driving the mechanical stretching units 4a to act, the actuator 6 is an electric push rod, and the movement state changing mechanism of the multifunctional sofa is a part of the mechanical stretching units 4 a.
As shown in fig. 1, 2, 8 and 9, the base 5 is fixedly arranged between two armrests 3, the base 5 is provided with the mechanical stretching units 4a near the armrests 3, the actuator 6 is arranged between the two mechanical stretching units 4a and hinged with the base 5, the actuator 6 is in transmission connection with the mechanical stretching units 4a at two sides through a square tube 11 which is transversely arranged, the mechanical stretching units 4a mainly comprise a backrest connecting piece 8, a footstool connecting piece 10, the seat connecting piece 9 and a transmission connecting rod 7, the square tube 11 is fixedly connected with the transmission connecting rod 7, one end of the actuator 6 provided with a motor is hinged with the base 5, and the end part of a telescopic rod of the actuator 6 is in rotation connection with the square tube 11; the transmission connecting rod 7 is rotationally connected with the base 5; the backrest connecting piece 8 is positioned at the rear part of the mechanical stretching unit 4a, is inserted into the backrest and is fixedly connected with the backrest through a screw, and the backrest connecting piece 8 is in transmission connection with the transmission connecting rod 7 through a backrest connecting rod assembly; the foot stool connecting piece 10 is positioned at the front part of the mechanical stretching unit 4a, is fixedly connected with the foot rest part 39 through a screw, and the foot stool connecting piece 10 is in transmission connection with the transmission connecting rod 7 through the foot stool connecting rod assembly; the seat connection 9 is located in the middle of the mechanical stretching unit 4a and can rotate relative to the base 5, and is fixedly connected with the seat 2 by a screw.
The sofa has four states of standing assistance, normal sitting, stretching foot rest and lying, and the state of sitting assistance, stretching foot rest and lying is realized by two motion states; in order to realize the switching of the sofa motion state, the rear end of the seat push-pull rod 37 is rotationally connected to the transmission connecting rod 7, the rear end of the seat push-pull rod 37 is rotationally connected with the front end of the seat push-pull rod 37, and the front end of the seat push-pull rod 38 is rotationally connected with the front part of the seat connecting piece 9; as shown in fig. 2, the position of the seat push rod 38 close to the seat push rod 37 is convexly provided with a jacking lug 40 protruding from the seat push rod 38 towards the middle of the base 5, the seat connecting piece 9 is provided with a first seat mounting plate 31 and a second seat mounting plate 32 protruding towards the middle of the base 5, the first seat mounting plate 31 is positioned in front of the second seat mounting plate 32, the front end of the first seat mounting plate 31 extends downwards to form an attack plate 33, an included angle of 90 degrees is formed between the attack plate 33 and the first seat mounting plate 31, and the jacking lug 40 is positioned in front of the attack plate 33; the lifting lug 40 and the windward plate 33 are both positioned below the rotation connection point of the seat push rod 38 and the seat connecting piece 9.
As shown in fig. 4-7, the base 5, the transmission link 7, the seat push-pull rod 37, the seat push rod 38 and the seat connecting piece 9 together form two sets of four-bar mechanisms, namely a basic four-bar mechanism and an auxiliary standing four-bar mechanism: as shown in fig. 4 and 5, the basic four-bar mechanism comprises three movable basic moving bars 41 and a fixed basic fixing bar 42, wherein when the front end of the actuator 6 is contracted to drive the front end of the transmission link 7 to rotate forwards and downwards and the seat push rod 38 is driven by the seat push rod 37 to rotate forwards on the seat connecting piece 9, the transmission link 7, the seat push rod 37, the seat push rod 38, the base 5 and the seat connecting piece 9 form the basic four-bar mechanism, in the basic four-bar mechanism, the base 5 and the seat connecting piece 9 are relatively static and jointly form the basic fixing bar 42, and the transmission link 7, the seat push rod 37 and the seat push rod 38 are three basic moving bars 41; in the auxiliary standing state, the seat push rod 38 rotates forward, the counter plate 33 is abutted against and moves together with the jacking lug 40 due to gravity, and the rear end of the seat connecting piece 9 which is lifted up and tilted up is rotated downwards until the jacking lug 40 is separated from the counter plate 33, so that the sofa is switched to a normal sitting state; in the normal sitting position, the seat post 38 rotates forward, the lifting lug 40 is disengaged from the welt plate 33, the seat post 38 does not act on the seat connector 9 to lift the rear end of the seat 2, but other link assemblies connected with the transmission link 7 can move the backrest and the leg rest 39, so that the sofa is switched from the normal sitting position to the extended leg rest or even lying position; the basic four-bar mechanism enables the sofa to have a movement state switching from an assisted standing state to a sitting state, from a sitting state to an extended footrest and to a lying state.
As shown in fig. 6, 7 and 11-13, the auxiliary standing four-bar mechanism comprises three movable auxiliary standing moving rods 43 and one fixed auxiliary standing fixed rod 44, when the sofa is switched from a normal sitting state to an auxiliary standing state, the actuator 6 stretches and drives the front end of the transmission connecting rod 7 to rotate upwards and backwards, when the seat push rod 38 has a backward rotation trend on the seat connecting piece 9 after being transmitted by the seat push rod 37, the base 5, the transmission connecting rod 7, the seat push rod 37, the seat push rod 38 and the seat connecting piece 9 form the auxiliary standing four-bar mechanism, in the auxiliary standing four-bar mechanism, the seat push rod 38 and the seat connecting piece 9 are relatively static and jointly form one auxiliary standing moving rod 43, the transmission connecting rod 7 and the seat push rod 37 are the other two auxiliary standing moving rods 43, the base 5 is the auxiliary standing fixed rod 44, and the seat push rod 38 drives the seat connecting piece 9 to rotate relative to the base 5, and the rear end of the seat connecting piece 9 is lifted up; the basic four-bar mechanism described above is still used when the sofa is switched from the lying or extended footrest state to the normal sitting state, since only when the normal sitting state is switched to the auxiliary standing state, the lifting boss rests against the counter plate 33 and forces the counter plate 33, the seat carrier 38 and the seat connection 9 move together relatively stationary, both of which can form an auxiliary standing movement bar 43.
In this example, as shown in fig. 2, 3 and 9, since the seat link 9 is not directly connected to the base 5 in a rotary manner, i.e. the mechanical stretching unit 4a further comprises a seat link 12, a first push-pull rod 14, a lifting link 15, a footrest push-pull rod 16, a first footrest link 17, a second footrest link 18, a third footrest link 19, a fourth footrest link 20, a fifth footrest link 21, a second push-pull rod 22, a first backrest link 23, a second backrest link 24 and a driven link 25; therefore, in the basic four-bar mechanism, the base 5, the seat connecting member 9, and the links between the base 5 and the seat connecting member 9 together constitute a basic fixing lever 42, and in the auxiliary standing four-bar mechanism, the base 5 and the links between the base 5 and the seat connecting member 9 together constitute an auxiliary standing fixing lever 44; specifically, the front end of the seat connecting piece 9 is rotatably connected to the front end of the seat connecting rod 12, and in the normal sitting, stretching, and lying states, the seat connecting piece 9 is put on the seat connecting rod 12, the rear part of the seat connecting rod 12 is rotatably connected to the upper end of the driven connecting rod 25, and the lower end of the driven connecting rod 25 is rotatably connected to the base 5; the middle part of the seat connecting rod 12 is rotationally connected with the upper end of the lifting connecting rod 15, the lower end of the lifting connecting rod 15 is rotationally connected with the base 5, the lifting connecting rod 15 is L-shaped, the corner of the lifting connecting rod 15 is rotationally connected with the front end of the first push-pull rod 14, and the rear end of the first push-pull rod 14 is rotationally connected with the transmission connecting rod 7; more precisely, therefore, in the basic four-bar mechanism, the base 5, the seat connection 9, the seat link 12, the first push-pull rod 14, the lifting link 15 and the driven link 25 are stationary, which together form a basic fixing rod 42, and in the auxiliary standing four-bar mechanism, the base 5, the seat link 12, the first push-pull rod 14, the lifting link 15 and the driven link 25 are stationary, which together form an auxiliary standing fixing rod 44; the seat link 12, the first push-pull rod 14, the lifting link 15 and the follower link 25, although having their respective movements, do not affect their visualization as a whole with the base 5.
As shown in fig. 10, the transmission link 7 is an L-shaped plate, the base 5 is fixedly provided with an upward protruding connection plate 45, the transmission link 7 includes an upper portion 7a and a lower portion 7b, a corner is formed between the upper portion 7a and the lower portion 7b, the transmission link is rotatably connected with the connection plate 45 on the base 5 at the corner, the lower portion 7b below the rotational connection point with the base 5 is approximately vertical, the lowermost end of the lower portion 7b is connected with a square tube 11, and the first push-pull rod 14 is rotatably connected with the lower portion 7b; the seat surface push-pull rod is rotatably connected to the forefront end of the upper portion 7a and the front end of the second push-pull rod 22 is rotatably connected to the upper portion 7a at a position substantially horizontal to the upper portion 7a above the rotational connection point with the base 5.
When the sofa is switched from a normal sitting state to an auxiliary standing state, the transmission connecting rod 7 drives the first push-pull rod 14 and the second push-pull rod 22 to move forwards, the first push-pull rod 14 firstly drives the seat connecting rod 12 to move downwards and forwards and then drives the seat connecting rod 12 to return to the original position, and the second push-pull rod 22 drives the backrest connecting piece 8 and the backrest to tilt forwards; when the sofa is switched from a normal sitting state to an extended footrest state or a lying state, the actuator 6 retracts to drive the transmission connecting rod 7 to rotate downwards and backwards, the transmission connecting rod 7 drives the first push-pull rod 22 and the second push-pull rod 22 to move backwards, the first push-pull rod 14 lifts the seat connecting rod 12 upwards and backwards, and the second push-pull rod 22 drives the backrest connecting piece 8 and the backrest to lean backwards; when the driven link 25 rotates with respect to the base 5 when the seat link 12 rotates, the driven link 25 is configured to support the seat link 12 and keep the seat 2 substantially horizontal, and the seat link 12 can be kept substantially horizontal even when the driven link 25 is present to switch between different states.
As shown in fig. 17 and 18, the base 5, the follower link 25, the seat link 12, and the lift link 15 form a double-rocker four-bar mechanism in the movement of the seat link 12, and the base 5, the transmission link 7, the first push-pull rod 14, and the lift link 15 form a double-rocker four-bar mechanism in the movement of the seat link 12, and the lengths and the like of the two four-bar mechanisms are not described in detail in the present embodiment.
In the process of switching from the normal sitting state to the auxiliary standing state, the actuator 6 stretches forwards to enable the transmission connecting rod 7 to rotate forwards, the transmission connecting rod 7 drives the first push-pull rod 14 to push the lifting connecting rod 15 downwards, the lifting connecting rod 15 rotates downwards and drives the seat connecting rod 12 to move forwards and downwards, then the lifting connecting rod 15 is pulled upwards backwards, and the lifting connecting rod 15 rotates upwards and drives the seat connecting rod 12 to return to the original position; 14-18, when the auxiliary standing state is switched back to the normal sitting state, the movement process of each connecting rod is opposite to the above process; when the normal sitting state is switched to the extended footrest state, the actuator 6 is retracted backwards to enable the transmission link 7 to rotate backwards, the transmission link 7 drives the first push-pull rod 14 to move downwards and backwards, the first push-pull rod 14 pulls the lifting link 15 to rotate backwards, the seat link 12 is lifted by the lifting link 15 and is accompanied by the backward tilting, but when the actuator 6 is retracted backwards to enable the extended footrest state to be switched to the lying state, the seat link 12 is lifted to the highest.
As shown in fig. 2, a seat return spring 26 is arranged between the seat connecting piece 9 and the seat connecting rod 12, the seat return spring 26 is configured to give downward rotation force to the rear part of the seat connecting piece 9, the seat connecting rod 12 is provided with a first spring fixing post 27 below a rotation connecting point of the seat connecting piece 9, a mounting hole (not numbered) for mounting the first spring fixing post 27 is formed in a meeting plate 33 of the seat connecting piece 9, one end of the seat return spring 26 is arranged on the first spring fixing post 27, and the other end is arranged on the meeting plate 33; the seat connecting rod 12 is located outside the seat connecting piece 9, the seat connecting rod 12 is bent inwards to form a bearing part 29 at a position close to the rear end, the second seat mounting plate 32 of the seat connecting piece 9 extends upwards and outwards to form a limiting plate 30, when the sofa is in an auxiliary standing state, the limiting plate 30 is separated from the bearing part 29, and in the normal sitting, stretching and lying states, the limiting plate 30 is acted by the seat return spring 26 to be rested on the bearing part 29.
Describing the movement of the footrest section again, as shown in fig. 14 to 16, the footrest link assembly is a first footrest link 17, a second footrest link 18, a third footrest link 19, a fourth footrest link 20, and a fifth footrest link 21, the upper end of the first footrest link 17 and the upper end of the second footrest link 18 are both rotatably connected to the seat link 12, and the rotational connection point of the first footrest link 17 and the seat link 12 is located below the rotational connection point of the second footrest link 18 and the seat link 12, the lower end of the third footrest link 19 is rotatably connected to the first footrest link 17, the third footrest link 19 is rotatably connected to the second footrest link 18 above its rotational connection point with the first footrest link 17, the lower end of the second footrest link 18 is rotatably connected to the lower end of the fourth footrest link 20, the front end of the fifth footrest link 21 is rotatably connected to the rear end of the footrest link 10, the upper end of the third footrest link 19 is rotatably connected to the rear end of the fifth footrest link 21, and the upper end of the fourth footrest link 20 is rotatably connected to the fifth footrest link 21; the fifth footrest connecting rod 21 is provided with a second spring fixing column 34, the second spring fixing column 34 is positioned below the footrest connecting piece 10, the middle part of the footrest connecting piece 10 is provided with a third spring fixing column 35, and a foot rest return spring 36 is arranged between the second spring fixing column 34 and the third spring fixing column 35; the two ends of the footstool push-pull rod 16 are respectively and rotatably connected to the front end of the base 5 and the first footstool connecting rod 17; the extension and retraction of the leg rest is mainly driven by the seat link 12, but must be accomplished by a driven engagement of the footrest push-pull rod 16.
The footrest link assembly and the footrest link 10 as a whole always move with the movement of the seat link 12, and when the normal sitting position is switched to the assisted standing position, the seat link 12 and the footrest link assembly move forward and downward, the distance of the movement is short, the footrest push-pull rod 16 has little influence on the footrest link assembly, and then the seat link 12 and the footrest link assembly return to the original positions, and the footrest push-pull rod 16 hardly causes the footrest link assembly to act in the whole process.
When the sitting state is switched to the extended footrest state from the normal sitting state, the actuator 6 retracts to drive the transmission connecting rod 7 to rotate backwards, the transmission connecting rod 7 drives the first push-pull rod 14 to move backwards, the first push-pull rod 14 pulls the lifting connecting rod 15 backwards, the front end of the lifting connecting rod 15 rotates upwards and backwards, the seat connecting rod 12 and the footrest connecting rod assembly lift upwards and backwards, the front end of the footrest push-pull rod 16 rotates upwards along with the lifting connecting rod and pushes the footrest connecting rod assembly to extend forwards, the second spring fixing column 34 of the fifth footrest connecting rod 21 jacks up the footrest connecting piece 10 and enables the footrest connecting piece to turn upwards, and the footrest is also turned along with the footrest connecting piece; when switching from the extended footrest state back to the normal sitting state, the respective links are reversed from the above-described movement, and the footrest return spring 36 allows the footrest connector 10 to be turned downward and retracted as the fifth footrest link 21 moves; the action of the ottoman push-pull rod 16 on the ottoman link assembly is passive and not active.
In the moving process, the motion is realized by a set of link mechanism, wherein the set of link mechanism comprises a fixed base 5, a seat link rod 12 which can only translate, a lifting link rod 15 which can only rotate, a footrest push-pull rod 16 which can only rotate and a first footrest link rod 17 which can only translate and rotate, the motion of the whole mechanism is determined by the mechanism of the five link rods because the seat link rod 12 can only translate, and when the lifting link rod 15 drives the seat link rod 12 to translate backwards, the lower end of the first footrest link rod 17 rotates forwards along with the translation of the seat link rod 12 under the limiting action of the footrest push-pull rod 16, so that the whole footrest link rod assembly is stretched and opened; the seat link 12 will tilt during the seating process, but at a smaller angle, the "translation-only seat link" in the above analysis is theoretical.
The footrest connecting member 10 is rotatably connected with the fifth footrest connecting rod 21, and is movable relative to the footrest connecting rod assembly, and the elasticity of the upper footrest return spring 36 is matched to enable the footrest portion of the seat to have a grip preventing function.
Finally, describing the movement of the backrest 1, as shown in fig. 1, 3, 14, 15, 19 and 20, the backrest link assembly is a second push-pull rod 22, a first backrest link 23 and a second backrest link 24, the front end of the second push-pull rod 22 is rotatably connected with the transmission link 7, the rear end of the second push-pull rod 22 is rotatably connected with the first backrest link 23, the first backrest link 23 is substantially L-shaped, the corner thereof is rotatably connected with the base 5, the rear end of the first backrest link 23 is rotatably connected with the front end of the backrest link 8, the backrest link 8 is also L-shaped, the corner of the backrest link 8 is rotatably connected with the upper end of the second backrest link 24, the upper portion of the backrest link 8 is inserted in the backrest 1 and is rotatably connected with the base 5 by screws, and the lower end of the second backrest link 24 is rotatably connected with the base 5, the first backrest link 23 is located in front of the second backrest link 24.
In the movement of the backrest connection 8, the base 5, the first backrest connection 23, the second backrest connection 24 and the backrest connection 8 form a double-rocker four-bar mechanism, in the movement of the backrest connection 8, the base 5, the transmission connection 7, the second push-pull rod 22 and the first backrest connection 23 form a double-rocker four-bar mechanism; in the four-bar mechanism for driving the backrest connecting member 8 to move, the transmission connecting rod 7 is driven by the actuator 6 to rotate relative to the base 5, and the second push-pull rod 22 is driven by the transmission connecting rod 7 to push the first backrest connecting rod 23 to rotate downwards relative to the base 5 or pull the first backrest connecting rod 23 to rotate upwards relative to the base 5; in the movement of the backrest connecting member 8, the movement of the first backrest connecting rod 23 causes the backrest connecting member 8 to move, the first backrest connecting rod 23 rotates relative to the base 5 to drive the backrest connecting member 8 to move, the second backrest connecting rod 24 also rotates relative to the base 5, the backrest connecting member 8 tilts backward while moving forward under the combined action of the first backrest connecting rod 24 and the second backrest connecting rod 24, and the backrest connecting member 8 tilts forward while moving backward, so that the backward tilting and forward tilting of the backrest 1 are realized.
Claims (3)
1. A multi-functional sofa motion state transformation mechanism, characterized by comprising:
a base, which is a frame structure and is configured as a main body support of the mechanism;
the transmission connecting rod is rotationally connected with the base;
the actuator is rotatably arranged on the base and drives the transmission connecting rod to rotate relative to the base;
the seat part connecting piece is arranged in a rotating way relative to the base;
the seat push-pull rod is rotationally connected to the transmission connecting rod;
the seat ejector rod is rotatably arranged on the seat connecting piece and is rotatably connected with the seat push-pull rod;
the base, the transmission connecting rod, the seat push-pull rod, the seat ejector rod and the seat connecting piece form two sets of four-bar mechanisms, namely a basic four-bar mechanism and an auxiliary standing four-bar mechanism; the base four-bar mechanism comprises three movable base moving bars and a fixed base fixed bar, the actuator drives the transmission connecting bars to rotate, when the seat push-pull rod drives the seat push-pull rod to rotate forwards on the seat connecting piece, the transmission connecting bars, the seat push-pull rod, the base and the seat connecting piece form the base four-bar mechanism, in the base four-bar mechanism, the base and the seat connecting piece are relatively static and jointly form the base fixed bar, and the transmission connecting bars, the seat push-pull rod and the seat push-pull rod are three base moving bars; in the auxiliary standing four-bar mechanism, the seat ejector rod and the seat connecting piece are relatively static and jointly form one auxiliary standing moving rod, the transmission connecting rod and the seat push-pull rod are the other two auxiliary standing moving rods, the base is the auxiliary standing fixed rod, and at the moment, the seat ejector rod drives the seat connecting piece to rotate relative to the base, and the rear end of the seat connecting piece is lifted up;
the seat ejector rod is convexly provided with a jacking lug, the seat connecting piece is provided with an opposite plate, and the jacking lug is positioned in front of the opposite plate; when the seat ejector rod drives the seat connecting piece to rotate relative to the base, the jacking lug is attached to the catering plate and acts on the catering plate by the jacking lug to jack up the seat connecting piece; the jacking convex block protrudes out of the seat ejector rod towards the middle of the base;
the seat connecting piece is provided with a first seat mounting plate and a second seat mounting plate which are protruded towards the middle of the base, the first seat mounting plate is positioned in front of the second seat mounting plate, and the front end of the first seat mounting plate extends downwards to form the meeting plate; an included angle of 90 degrees is formed between the windward plate and the first seat mounting plate;
the jacking convex blocks and the catering plates are positioned below the rotating connection points of the seat ejector rods and the seat connecting pieces; the actuator is an electric push rod, when the electric push rod stretches, the transmission connecting rod rotates upwards and backwards at the part above the rotating connection point of the electric push rod and the base, after being transmitted by the seat push-pull rod and the seat push rod, the jacking convex block is abutted on the meeting plate, and the rear end of the seat connecting piece is lifted up; when the electric push rod is contracted, the transmission connecting rod rotates forwards and downwards at the part above the rotating connecting point of the transmission connecting rod and the base, the seat push-pull rod is driven to move forwards and downwards, the seat push rod rotates forwards relative to the seat connecting piece along with the transmission connecting rod, and the rear end of the seat connecting piece rotates downwards until the jacking convex block is separated from the catering plate.
2. The multi-function sofa motion state changing mechanism according to claim 1, wherein: the transmission connecting rod is approximately L-shaped and is rotationally connected with the base at the corner of the transmission connecting rod, and the seat push-pull rod is rotationally connected with the front end part of the transmission connecting rod.
3. The multi-function sofa motion state changing mechanism according to claim 1, wherein: the base is fixedly provided with an upward protruding connecting plate, and the transmission connecting rod is rotationally connected with the connecting plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210568078.8A CN115153243B (en) | 2022-05-24 | 2022-05-24 | Multifunctional sofa motion state conversion mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210568078.8A CN115153243B (en) | 2022-05-24 | 2022-05-24 | Multifunctional sofa motion state conversion mechanism |
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| Publication Number | Publication Date |
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| CN115153243A CN115153243A (en) | 2022-10-11 |
| CN115153243B true CN115153243B (en) | 2023-07-25 |
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| CN202210568078.8A Active CN115153243B (en) | 2022-05-24 | 2022-05-24 | Multifunctional sofa motion state conversion mechanism |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN207788965U (en) * | 2017-10-16 | 2018-08-31 | 广东智爱机器人科技有限公司 | A kind of monomer multifunctional life self-care auxiliary robot |
| CN111839052A (en) * | 2020-06-11 | 2020-10-30 | 永艺家具股份有限公司 | Electromechanical stretching device |
| CN113768305A (en) * | 2020-07-02 | 2021-12-10 | 永艺家具股份有限公司 | Multifunctional leisure chair frame structure and supporting and sitting method thereof |
| CN215604340U (en) * | 2021-02-05 | 2022-01-25 | 浙江工业大学 | Leisure deck chair with standing assisting function |
| CN216316610U (en) * | 2021-08-31 | 2022-04-19 | 永艺家具股份有限公司 | Auxiliary rising device and leisure chair |
-
2022
- 2022-05-24 CN CN202210568078.8A patent/CN115153243B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207788965U (en) * | 2017-10-16 | 2018-08-31 | 广东智爱机器人科技有限公司 | A kind of monomer multifunctional life self-care auxiliary robot |
| CN111839052A (en) * | 2020-06-11 | 2020-10-30 | 永艺家具股份有限公司 | Electromechanical stretching device |
| CN113768305A (en) * | 2020-07-02 | 2021-12-10 | 永艺家具股份有限公司 | Multifunctional leisure chair frame structure and supporting and sitting method thereof |
| CN215604340U (en) * | 2021-02-05 | 2022-01-25 | 浙江工业大学 | Leisure deck chair with standing assisting function |
| CN216316610U (en) * | 2021-08-31 | 2022-04-19 | 永艺家具股份有限公司 | Auxiliary rising device and leisure chair |
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| CN115153243A (en) | 2022-10-11 |
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