Electromechanical stretching device
阅读说明:本技术 一种电动机械伸展装置 (Electromechanical stretching device ) 是由 陈永春 施振杰 李文才 李立波 于 2020-06-11 设计创作,主要内容包括:本发明公开了一种电动机械伸展装置,包括两个左右对称的机械伸展单元及驱动机构,每个机械伸展单元包括坐垫支撑组件和靠背组件;驱动机构包括线性致动器、前马达管和后马达管,线性致动器用以先后驱动所述前马达管、后马达管做进给运动;坐垫支撑组件包括座部安装板,靠背组件包括背靠件、第二连杆机构,第二连杆机构包括底部连杆,座部安装板的中部铰接有第一转动件,底部连杆的中部铰接有第二转动件,第一转动件与所述第二转动件可转动连接;后马达管驱动所述第一转动相对于第二转动件转动以带动座部安装板远离或靠近底部连杆;第一转动件与第二转动件也构成了座部安装板的中部支撑,增强座部安装板的承载能力,提高了结构的稳定性。(The invention discloses an electromechanical extension device, which comprises two mechanical extension units and a driving mechanism, wherein the mechanical extension units are bilaterally symmetrical, and each mechanical extension unit comprises a cushion support component and a backrest component; the driving mechanism comprises a linear actuator, a front motor pipe and a rear motor pipe, and the linear actuator is used for driving the front motor pipe and the rear motor pipe to perform feeding motion in sequence; the cushion supporting assembly comprises a seat part mounting plate, the backrest assembly comprises a backrest part and a second connecting rod mechanism, the second connecting rod mechanism comprises a bottom connecting rod, a first rotating part is hinged to the middle part of the seat part mounting plate, a second rotating part is hinged to the middle part of the bottom connecting rod, and the first rotating part is rotatably connected with the second rotating part; the rear motor tube drives the first rotating part to rotate relative to the second rotating part so as to drive the seat mounting plate to be far away from or close to the bottom connecting rod; the first rotating piece and the second rotating piece also form the middle support of the seat mounting plate, so that the bearing capacity of the seat mounting plate is enhanced, and the structural stability is improved.)
1. An electromechanical stretching apparatus, comprising:
The folding stool comprises a base, wherein two mechanical stretching units are arranged on the base in a mirror symmetry manner, and each mechanical stretching unit comprises a footrest component, a cushion supporting component and a backrest component;
the driving mechanism is positioned between the two mechanical extension units and comprises a linear actuator, a front motor pipe and a rear motor pipe, wherein the linear actuator is respectively connected with the front motor pipe and the rear motor pipe and is used for driving the front motor pipe and the rear motor pipe to perform feeding motion successively;
two ends of the front motor pipe are respectively connected with the footrest components in the two mechanical extension units so as to drive the footrest components to move between a folding position and an extension position;
the cushion support assembly includes a seat mounting plate, the back assembly includes a back member, a back drive linkage mechanism for driving the back assembly between a stowed position and a reclined position, the back member is pivotally coupled to the seat mounting plate, the back drive linkage mechanism includes a bottom link fixedly connected to a base, the bottom link is positioned below the seat mounting plate and is relatively parallel to the seat mounting plate; the middle part of the seat part mounting plate is hinged with a first rotating part, the middle part of the bottom connecting rod is hinged with a second rotating part, and the first rotating part is rotatably connected with the second rotating part;
Two ends of the rear motor pipe are respectively connected with a first rotating piece in the two mechanical extension units, and the first rotating piece rotates relative to the second rotating piece along with the rear motor pipe to drive the seat mounting plate to be far away from or close to the bottom connecting rod;
the backrest driving connecting rod mechanism further comprises two crank connecting rods which are respectively rotatably connected to the head end and the tail end of the bottom connecting rod, each crank connecting rod comprises two branches, a front supporting piece and a rear supporting piece are respectively hinged to one branch of each of the two crank connecting rods, the front supporting piece and the rear supporting piece are respectively connected with the head end and the tail end of the seat mounting plate and used for driving the two crank connecting rods to rotate when the seat mounting plate is far away from or close to the bottom connecting rod, and then the backrest driving connecting rod mechanism is triggered to drive the backrest assembly to move between a folding position and a reclining position; during the process that the backrest component moves between the folding position and the reclining position, the other branch of each of the two crank connecting rods is always parallel to the first rotating piece.
2. The electromechanical extension device of claim 1, wherein the back drive linkage further comprises a second transverse link located on one side of the seat mounting plate, the tail end of the second transverse connecting rod is rotatably connected with the backrest part, the front end of the second transverse connecting rod is hinged with a front longitudinal connecting rod, the front longitudinal connecting rod is a crank connecting rod positioned at the head end of the bottom connecting rod, two branches of the front longitudinal connecting rod are respectively a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are arranged in a crossed manner to form a V-shaped structure, the bottom connecting rod and the front longitudinal connecting rod are hinged at the crossed position of the first connecting plate and the second connecting plate, the first connecting plate is hinged with the second transverse connecting rod, the second connecting plate is hinged with the front supporting piece, and the first connecting plate is always parallel to the first rotating piece.
3. The electro-mechanical stretching apparatus as claimed in claim 2, wherein the front longitudinal connecting rod has a slot at the intersection of the first connecting plate and the second connecting plate, the front supporting member has a limiting member, and the limiting member abuts against the inner wall of the slot when the backrest member is in the retracted position.
4. The electro-mechanical extension device of claim 2 wherein the back assembly further comprises a third transverse link and a crank connection, the tail end of the third transverse connecting rod is hinged with the tail end of the backrest piece, the middle part of the third transverse connecting rod is hinged with the tail end of the second transverse connecting rod, the crank connecting piece is positioned in the crank connecting rod at the tail end of the bottom connecting rod, two branches of the crank connecting piece are respectively a third connecting plate and a fourth connecting plate, the third connecting plate and the fourth connecting plate are arranged in a crossed manner to form a V-shaped structure, the third connecting plate is hinged with the head end of the third transverse connecting rod, the bottom connecting rod is connected with the crank connecting piece at the intersection of the third connecting plate and the fourth connecting plate, the fourth connecting plate is hinged with the rear supporting piece, and the third connecting plate is always parallel to the first rotating piece.
5. The electro-mechanical stretcher of claim 4 wherein the third transverse link is provided with a second protrusion that abuts a side wall of the rear support link when the backrest is in the reclined position.
6. The electro-mechanical stretching apparatus as claimed in claim 1, wherein one side of the seat mounting plate is provided with a first transverse link parallel to the seat mounting plate, the first transverse link being rotatably coupled to a first bench collapsing link of a footrest assembly, a rear end of the first bench collapsing link and a rear end of a second bench collapsing link of the footrest assembly being hinged to the seat mounting plate, the rear end of the first transverse link being hinged to a rear longitudinal link, the rear longitudinal link being hinged to the seat mounting plate through a rear support link, the seat mounting plate, the first bench collapsing link, the second bench collapsing link, the first transverse link, the rear longitudinal link and the rear support link constituting a footrest linkage for moving the footrest assembly between a collapsed position and an extended position relative to the seat mounting plate; two ends of the front motor pipe are respectively connected with a second stool collapsing connecting rod in the two mechanical stretching units so as to drive the footrest connecting rod mechanism to operate.
7. The electro-mechanical stretching apparatus of claim 1 wherein a support assembly is provided on the base for supporting the mechanical stretching unit.
8. The electro-mechanical stretching apparatus as claimed in claim 7, wherein the supporting member includes a supporting plate, the supporting plate is connected to the base, and a linkage is hinged to the supporting plate, the linkage includes a plurality of supporting links, the head and the tail of two adjacent supporting links are hinged to each other, the supporting link at the head end is hinged to the supporting plate, and the supporting link at the tail end is fixedly connected to the bottom link.
9. The electro-mechanical stretching apparatus as claimed in claim 8, wherein the supporting link at the rear end is rotatably connected with a bending link, the bending link is divided into a first extending section and a second extending section along the length direction thereof, the second extending section is hinged with the supporting link, the first extending section is bent along the length direction thereof away from the bottom link, and the first extending section is hinged with the rear longitudinal link.
10. The electro-mechanical stretching device of claim 9 wherein the second extension is curved along its length in a direction away from the mechanical stretching unit.
Technical Field
The present invention relates to the field of sports upholstered furniture for supporting a user's body in a substantially seated position, and more particularly to an electromechanical stretching device.
Background
Reclining seating units currently exist on the market that allow a user to extend a footrest or ottoman forward relative to a seat and recline a backrest rearward. These existing seating units generally provide three basic positions: a standard non-reclined stowed position; an extended position; and a reclined position. In the stowed position, the base is in a generally horizontal orientation and the backrest is disposed substantially upright. Additionally, if the seating unit includes an ottoman to which the mechanism is attached, the mechanism folds so that the ottoman does not extend. In the extended position, commonly referred to as the television ("TV") position, the ottoman is extended forward of the seat portion while the backrest and seat cushion are rotated backward through an angle of about 4 degrees to ensure that the occupant of the seating unit is comfortably watching television; in the reclined position, the backrest is positioned rearwardly from the extended position at an obtuse angle to the seat for resting or sleeping.
Many modern seating units in the current industry, such as recliners or sofas, are adapted for the above-mentioned adjustment function; it is currently common to use a wrench to control the opening of the seating unit; however, in order to expand the application range of the seat unit and improve the comfort level of the seat unit, many seat units are provided with power adjustment by combining a motor, and the backrest, the seat cushion and the leg rest are driven by the motor to drive the backrest, the seat cushion and the leg rest to open or close so as to meet the application requirements.
While many conventional reclining chairs operate satisfactorily, furniture manufacturers are continually seeking to develop improved chair frames and functional racks to reduce the complexity of the system. The' 201110021296.1 patent teaches a linkage mechanism and a seating unit that allows the seating unit to recline or fold by means of a channel and a sequential element that extends into the channel, which allows the state of the seating unit to change by sliding the sequential element within the channel. However, the following problems still remain as described above;
1. in the process of folding or extending the backrest, the plate where the sliding groove is located moves upwards or downwards relatively to drive the component for supporting the cushion to rotate, and the problem of jumping or displacement can also occur in the rotating process of the component for supporting the cushion due to the fact that the matching motion track of the sliding groove and the component is not smooth enough.
2. In the process that the components supported by the cushion ascend or descend, the fluctuation of the middle parts of the components supported by the cushion is larger than the fluctuation of the head and the tail of the components supported by the cushion, and the riding experience of a user is influenced.
Disclosure of Invention
In order to solve the above technical problem, an object of the present invention is to provide an electromechanical extension apparatus, wherein a first rotating member located between a seat mounting plate and a base is driven by a motor to rotate relative to a second rotating member to drive the seat mounting plate to move away from or close to the base, so as to achieve lifting of the seat mounting plate, and the two ends of the head and the tail of the seat mounting plate are respectively connected with a backrest driving link mechanism through a front support member and a rear support member to drive a backrest to rotate; furthermore, in the electromechanical stretching device, one branch of each of the two crank connecting rods is always parallel to the first rotating member in the rotating process, so that the relative lifting height of the front supporting piece and the rear supporting piece is the same as the lifting height of the first rotating member relative to the second rotating member, and the seat mounting plate can integrally move up and down in parallel.
The technical scheme adopted by the invention is as follows:
an electromechanical stretching device comprising:
the folding stool comprises a base, wherein two mechanical stretching units are arranged on the base in a mirror symmetry manner, and each mechanical stretching unit comprises a footrest component, a cushion supporting component and a backrest component;
the driving mechanism is positioned between the two mechanical extension units and comprises a linear actuator, a front motor pipe and a rear motor pipe, wherein the linear actuator is respectively connected with the front motor pipe and the rear motor pipe and is used for driving the front motor pipe and the rear motor pipe to perform feeding motion successively;
two ends of the front motor pipe are respectively connected with the footrest components in the two mechanical extension units so as to drive the footrest components to move between a folding position and an extension position;
the cushion support assembly includes a seat mounting plate, the back assembly includes a back member, a back drive linkage mechanism for driving the back assembly between a stowed position and a reclined position, the back member is pivotally coupled to the seat mounting plate, the back drive linkage mechanism includes a bottom link fixedly connected to a base, the bottom link is positioned below the seat mounting plate and is relatively parallel to the seat mounting plate; the middle part of the seat part mounting plate is hinged with a first rotating part, the middle part of the bottom connecting rod is hinged with a second rotating part, and the first rotating part is rotatably connected with the second rotating part;
Two ends of the rear motor pipe are respectively connected with a first rotating piece in the two mechanical extension units, and the first rotating piece rotates relative to the second rotating piece along with the rear motor pipe to drive the seat mounting plate to be far away from or close to the bottom connecting rod;
the backrest driving connecting rod mechanism further comprises two crank connecting rods which are respectively rotatably connected to the head end and the tail end of the bottom connecting rod, each crank connecting rod comprises two branches, a front supporting piece and a rear supporting piece are respectively hinged to one branch of each of the two crank connecting rods, the front supporting piece and the rear supporting piece are respectively connected with the head end and the tail end of the seat mounting plate and used for driving the two crank connecting rods to rotate when the seat mounting plate is far away from or close to the bottom connecting rod, and then the backrest driving connecting rod mechanism is triggered to drive the backrest assembly to move between a folding position and a reclining position; during the process that the backrest component moves between the folding position and the reclining position, the other branch of each of the two crank connecting rods is always parallel to the first rotating piece.
In a further scheme, the backrest driving link mechanism further comprises a second transverse connecting rod located on one side of the seat mounting plate, the tail end of the second transverse connecting rod is rotatably connected with the backrest piece, the front end of the second transverse connecting rod is hinged with a front longitudinal connecting rod, the front longitudinal connecting rod is a crank connecting rod located at the head end of the bottom connecting rod, two branches of the front longitudinal connecting rod are respectively a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are arranged in a crossed mode to form a V-shaped structure, the bottom connecting rod is hinged with the front longitudinal connecting rod at the intersection of the first connecting plate and the second connecting plate, the first connecting plate is hinged with the second transverse connecting rod, the second connecting plate is hinged with the front supporting piece, and the first connecting plate is parallel to the first rotating piece.
In a further scheme, a clamping groove is formed in the intersection of the first connecting plate and the second connecting plate of the front longitudinal connecting rod, a limiting part is arranged on the front supporting part, and when the backrest is in the folding position, the limiting part abuts against the inner wall of the clamping groove.
In a further scheme, the backrest assembly further comprises a third transverse connecting rod and a crank connecting piece, the tail end of the third transverse connecting rod is hinged to the tail end of the backrest piece, the middle of the third transverse connecting rod is hinged to the tail end of the second transverse connecting rod, the crank connecting piece is located in the crank connecting rod at the tail end of the bottom connecting rod, two branches of the crank connecting piece are respectively a third connecting plate and a fourth connecting plate, the third connecting plate and the fourth connecting plate are arranged in a crossed mode to form a V-shaped structure, the third connecting plate is hinged to the head end of the third transverse connecting rod, the bottom connecting rod is connected with the crank connecting piece at the crossed position of the third connecting plate and the fourth connecting plate, the fourth connecting plate is hinged to the rear supporting piece, and the third connecting plate is parallel to the first rotating piece.
In a further aspect, a second protrusion is disposed on the third transverse link, and when the backrest is in the reclining position, the second protrusion abuts against a side wall of the rear support.
In a further aspect, a first transverse connecting rod parallel to the seat mounting plate is arranged on one side of the seat mounting plate, the first transverse connecting rod is rotatably connected to a first stool collapsing connecting rod in a footrest assembly, the tail end of the first stool collapsing connecting rod and the tail end of a second stool collapsing connecting rod in the footrest assembly are hinged to the seat mounting plate, the tail end of the first transverse connecting rod is hinged to a rear longitudinal connecting rod, the rear longitudinal connecting rod is hinged to the seat mounting plate through a rear supporting piece, and the seat mounting plate, the first stool collapsing connecting rod, the second stool collapsing connecting rod, the first transverse connecting rod, the rear longitudinal connecting rod and the rear supporting piece form a footrest connecting rod mechanism for driving the footrest assembly to move between a folded position and an extended position relative to the seat mounting plate; two ends of the front motor pipe are respectively connected with a second stool collapsing connecting rod in the two mechanical stretching units so as to drive the footrest connecting rod mechanism to operate.
In a further aspect, a support assembly is provided on the base for supporting the mechanical extension unit.
In a further scheme, the supporting component includes the backup pad, the backup pad with the base is connected, just it has the linkage to articulate in the backup pad, the linkage includes many supporting connecting rods, and the end to end of two adjacent supporting connecting rods is articulated each other, the supporting connecting rod that is located the head end with the backup pad is articulated, and the supporting connecting rod that is located the tail end is connected with bottom connecting rod fixed connection. So that the supporting component can rotate along with the change of the shape of the mechanical stretching unit to continuously support.
In a further scheme, a bent connecting rod is rotatably connected to the supporting connecting rod at the tail end, the bent connecting rod is divided into a first extending section and a second extending section along the length direction of the bent connecting rod, the second extending section is hinged to the supporting connecting rod, the first extending section is bent along the length direction of the bent connecting rod to the direction far away from the bottom connecting rod, and the first extending section is hinged to the rear longitudinal connecting rod. Avoiding interference with the bottom connecting rod.
In a further aspect, the second extension is curved along its length in a direction away from the mechanical extension unit. Avoiding interference with the crank attachment.
Advantageous effects
1. The first rotating piece located between the seat portion mounting plate and the base rotates relative to the second rotating piece to drive the seat portion mounting plate to be far away from or close to the base to achieve lifting of the seat portion mounting plate. When realizing that the seat mounting panel goes up and down, because first rotation piece is located the middle part of seat mounting panel, the second rotates the middle part that is located the bottom connecting rod, and first rotation piece has also constituted the middle part of seat mounting panel with the second and has supported, strengthens the bearing capacity of seat mounting panel, has improved the stability of structure.
2. The seat mounting plate is driven to ascend or descend by the backrest driving connecting rod mechanism and the backrest piece is driven to move, the transmission mode that the seat frame is jacked up by the sliding grooves commonly used in the market is overcome, the seat frame is stable in movement, the stretching process is coherent without micro-jumping perception, the seat frame has excellent experience feeling, and the requirement of people for comfort of materials is met more.
3. The head end both ends of bottom connecting rod all articulate there is the crank connecting rod, and two crank connecting rods articulate respectively has preceding support piece and back support piece. In the rotating process, the front supporting piece and the rear supporting piece not only realize the movement of the driving backrest piece, but also play a supporting role in the seat mounting plate, and the stability of the structure is improved.
4. Two crank connecting rods all are the V-arrangement, and their own one of them branch is parallel with first commentaries on classics piece all the time in the rotation process for the relative lifting height of front support piece, back support piece is the same with the lifting height of first commentaries on classics piece for the second commentaries on classics piece, makes the whole parallel up-and-down movement of seat mounting panel, and at the lift in-process, the seat mounting panel is whole can not have great unsmooth fluctuation to change, has improved the comfortable degree of person of taking.
Drawings
FIG. 1 is a schematic view of an electromechanical stretching apparatus according to the present invention;
FIG. 2 is a schematic view of the mechanical extension unit of the present invention when the footrest assembly is in the folded position and the backrest assembly is in the folded position;
FIG. 3 is a schematic view of the mechanical extension unit with the footrest assembly in an extended position and the backrest assembly in a reclined position;
FIG. 4 is a schematic illustration of the footrest assembly and footrest linkage mechanism with the footrest assembly in the collapsed position;
FIG. 5 is a schematic illustration of the footrest assembly and footrest linkage mechanism with the footrest assembly in the extended position;
fig. 6 is a schematic structural view of the backrest assembly and the backrest drive link mechanism when the backrest assembly is in the stowed position;
FIG. 7 is a schematic view of the backrest assembly and the backrest drive linkage with the backrest assembly in a reclined position;
FIG. 8 is a schematic view of the front longitudinal link;
FIG. 9 is a schematic structural view of a crank attachment;
FIG. 10 is a schematic view of a curved link;
FIG. 11 is a schematic view of the backrest;
FIG. 12 is a schematic three-dimensional view of the mechanical extension unit when the footrest assembly is in the stowed position and the backrest assembly is in the stowed position;
FIG. 13 is a schematic three-dimensional view of the mechanical extension unit when the footrest assembly is in the extended position and the backrest assembly is in the stowed position;
fig. 14 is a three-dimensional schematic view and a partially enlarged view of the mechanical extension unit when the footrest assembly is in the extended position and the backrest assembly is in the reclined position.
FIG. 15 is a front view of the mechanical extension unit with the footrest assembly in a stowed position and the backrest assembly in a stowed position;
FIG. 16 is a front view of the mechanical extension unit with the footrest assembly in an extended position and the backrest assembly in a reclined position;
the reference numerals in the schematic drawings illustrate:
1-base, 2-mechanical extension unit, 3-footrest assembly, 31-footrest, 32-first bench-collapsing link, 33-second bench-collapsing link, 34-third bench-collapsing link, 35-fourth bench-collapsing link, 4-cushion-supporting assembly, 41-seat-mounting plate, 5-backrest assembly, 51-backrest, 511-backrest-insertion section, 512-connection section, 52-second transverse link, 53-third transverse link, 531-second projection, 54-crank-connection, 541-third connection plate, 542-fourth connection plate, 543-first projection, 6-first transverse link, 7-rear longitudinal link, 71-limiting groove, 8-rear support, 9-front longitudinal link, 91-first connection plate, 92-second connecting plate, 93-clamping groove, 10-front support, 101-stop, 11-bottom link, 12-support component, 121-support plate, 122-support link, 123-bending link, 1231-first extension, 1232-second extension, 13-drive component, 131-linear actuator, 132-front motor tube, 133-rear motor tube, 134-slider, 135-drive rail, sliding groove 136, 14-first rotating component, 15-second rotating component.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Referring to fig. 1-16, the present embodiment provides an electromechanical stretching apparatus, which includes a base 1 and two
The base is also provided with a drive mechanism 13 located between the two
Specifically, in the present embodiment, the
Meanwhile, the tail end (i.e. the end far away from the footrest 31) of the first transverse connecting
The first
When the first
In this embodiment, the
The second
The backrest driving linkage mechanism is composed of a third
In this embodiment, the
In this embodiment, the
Meanwhile, both ends of the head end of the
In the scheme, a front supporting
Referring to fig. 8, two branches of the front
In the present embodiment, the first connecting
And the third
On the contrary, when the horizontal pushing motor rotates reversely, the first rotating
Meanwhile, the front longitudinal connecting
Through the normal running fit of
In the present embodiment, the base 1 is provided with a supporting
In the scheme, the hinging mode between the connecting rods adopts a bearing type kinematic pair of a column shaft and a bush. However, other prior art hinges may be used to ensure smooth operation of the extension device.
It should also be noted that the references to parallel in this embodiment are both substantially parallel, which may be the case where the two are substantially parallel, and which may allow for a small angular deflection between two parallel components. For example, an included angle of 1 to 3 degrees is formed between the two, so that the
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
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