CN111297113A - Full-link mechanical stretching device of seat unit - Google Patents
Full-link mechanical stretching device of seat unit Download PDFInfo
- Publication number
- CN111297113A CN111297113A CN202010242163.6A CN202010242163A CN111297113A CN 111297113 A CN111297113 A CN 111297113A CN 202010242163 A CN202010242163 A CN 202010242163A CN 111297113 A CN111297113 A CN 111297113A
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- CN
- China
- Prior art keywords
- connecting rod
- link
- assembly
- mounting plate
- fixing plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
- A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
- A47C17/163—Seating furniture changeable to beds by tilting or pivoting the back-rest and a foot-rest
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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
- A47C17/04—Seating furniture, e.g. sofas, couches, settees, or the like, with movable parts changeable to beds; Chair beds
- A47C17/16—Seating furniture changeable to beds by tilting or pivoting the back-rest
- A47C17/17—Seating furniture changeable to beds by tilting or pivoting the back-rest with coupled movement of back-rest and 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
Landscapes
- 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 full-link mechanical stretching device of a seat unit, which comprises a pedal mechanism, a seat part mechanism and a backrest mechanism, and is characterized in that: the seat mechanism comprises a mounting plate, a fixing plate and a connecting rod assembly; the mounting plate is connected with the fixing plate through a connecting rod assembly and can swing back and forth relative to the fixing plate; the connecting rod assembly comprises a first three-connecting-rod assembly, a second three-connecting-rod assembly and a third connecting-rod assembly; the three-link assembly is connected to the mounting plate and forms a first four-side swinging structure with the mounting plate; the second three-link assembly is connected to a first middle link opposite to the mounting plate in the first three-link assembly and forms a second four-side swinging structure with the first middle link; the third connecting rod assembly is provided with a plurality of third connecting rods, and two ends of each third connecting rod are respectively pivoted between the second three connecting rod assembly and the fixing plate. The invention improves the stability of the stretching structure in stretching and shrinking and prolongs the service life.
Description
Technical Field
The present invention relates to a mechanical retractor and more particularly to a full-link mechanical extension of a seating unit.
Background
The existing adjustable armrest floor series sofa is internally provided with a stretching mechanical support frame, the mechanical stretching support iron frame generally comprises a pedal mechanism, a seat mechanism and a backrest mechanism, and the relative positions and angles of the pedal, the seat and the backrest of the sofa can be adjusted through a series of mechanical linkages between the pedal mechanism, the seat mechanism and the backrest mechanism, so that the sofa can be switched to a sitting posture, a leisure posture and a full lying posture.
Since the seat mechanism needs to bear most of the weight of the user, the structural strength and stability of the seat mechanism directly affect the service life of the sofa, and therefore, in order to further improve the satisfaction of the user, there is room for further improvement in the structure of the seat mechanism in the prior art sofa.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a full-link mechanical stretching device of a seat unit, which improves the stretching and contracting stability and the service life of a stretching structure.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a full connecting rod mechanical stretching device of seat unit, includes pedal mechanism, seat mechanism and back mechanism, characterized by: the seat mechanism comprises a mounting plate, a fixing plate and a connecting rod assembly;
the mounting plate is connected with the fixing plate through a connecting rod assembly and can swing back and forth relative to the fixing plate; the connecting rod assembly comprises a first three-connecting-rod assembly, a second three-connecting-rod assembly and a third connecting-rod assembly;
the three-link assembly is connected to the mounting plate and forms a first four-side swinging structure with the mounting plate;
the second three-link assembly is connected to a first middle link opposite to the mounting plate in the first three-link assembly and forms a second four-side swinging structure with the first middle link;
the third connecting rod assembly is provided with a plurality of third connecting rods, and two ends of each third connecting rod are respectively pivoted between the second three connecting rod assembly and the fixing plate.
Preferably, the third connecting rod assembly has a first front connecting rod, a first rear connecting rod and a first intermediate connecting rod;
two ends of the first front connecting rod are respectively pivoted to the mounting plate and the front end of the first middle connecting rod;
the two ends of the first rear connecting rod are respectively pivoted to the mounting plate and the rear end part of the first middle connecting rod.
Preferably, the third connecting rod assembly II is provided with a second front connecting rod, a second rear connecting rod and a second middle connecting rod;
the lower end and the middle part of the second front connecting rod are respectively pivoted to the front end of the first middle connecting rod and the front end of the second middle connecting rod;
and two ends of the second rear connecting rod are respectively pivoted to the rear end of the first middle connecting rod and the rear end of the second middle connecting rod.
Preferably, the connecting rod assembly three is provided with a third rear connecting rod, a third front upper connecting rod and a third front lower connecting rod;
two ends of the third rear connecting rod are respectively pivoted to the middle part of the second rear connecting rod and the middle rear part of the fixing plate;
two ends of the third front upper connecting rod are respectively pivoted to the upper end of the second front connecting rod and the upper side part of the front end of the fixing plate;
and two ends of the third front lower connecting rod are respectively pivoted to the middle lower part of the second front connecting rod and the lower side part of the front end of the fixing plate.
Preferably, a first positioning component is arranged on the fixing plate, and the first positioning component is used for abutting against the third connecting rod assembly in the folded state.
Preferably, the mounting plate is provided with a second positioning component, and the second positioning component is abutted by the three-link assembly in the stretching state.
The invention has the advantages that: the full connecting rod is high in structural stability and structural strength, and the stability of the seat unit in contraction and extension use can be remarkably improved.
Drawings
Fig. 1 is a schematic structural diagram of a full-link mechanical extension device of a seat unit in a sitting posture according to the present embodiment;
FIG. 2 is a schematic view of a linkage assembly of the full-linkage mechanical extension apparatus of the seating unit provided in accordance with the present embodiment;
fig. 3 is a schematic structural view of the full-link mechanical stretching device of the seat unit in the leisure posture according to the embodiment;
fig. 4 is a schematic structural view of the full-link mechanical stretching device of the seat unit provided in this embodiment in a full lying posture state.
Detailed Description
The full link mechanical extension of the seating unit of the present invention is further described with reference to fig. 1 to 4.
A full-link mechanical stretching device of a seat unit comprises a pedal mechanism 1, a seat mechanism 2 and a backrest mechanism 3 which are connected in sequence. The pedal mechanism 1 and the backrest mechanism 3 are respectively arranged on the front side and the rear side of the seat part mechanism 2, meanwhile, the seat part mechanism 2 is provided with the electric push rod 4, and the electric push rod 4 can drive the pedal mechanism 1, the seat part mechanism 2 and the backrest mechanism 3 to be linked, so that the seat unit is in a sitting posture state, a leisure posture state and a full lying posture state. In a sitting posture state, the pedal mechanism 1 is contracted, and the backrest mechanism 3 is inclined forwards; in a leisure posture state, the pedal mechanism 1 is extended, and the backrest mechanism 3 is inclined forwards; in the full-lying posture, the pedal mechanism 1 is extended, and the backrest mechanism 3 is inclined backwards.
The seat mechanism 2 includes a mounting plate 24, a fixing plate 25, and a link assembly. The mounting plate 24 is connected with the fixing plate 25 through a connecting rod assembly and can swing back and forth relative to the fixing plate 25; the connecting rod assembly comprises a first three-connecting-rod assembly 21, a second three-connecting-rod assembly 22 and a third connecting-rod assembly 23.
The first three-link assembly 21 is connected to the mounting plate 24 and forms a first four-side swinging structure with the mounting plate 24; the second three-link assembly 22 is connected to the first intermediate link 212 of the first three-link assembly 21 opposite to the mounting plate 24, and forms a second four-sided swing structure with the first intermediate link 212. The third connecting rod assembly 23 has a plurality of third connecting rods, and two ends of each third connecting rod are respectively pivoted between the second three-connecting rod assembly 22 and the fixing plate 25.
In the structure, the fixing plate 25 is connected with the mounting plate 24 through the three-link assembly I21, the three-link assembly II 22 and the link assembly III 23, so that a full-link connecting structure can be realized, the structural strength is high, and the contraction and extension stability of the whole extension device is improved. When the pedal mechanism works, the electric push rod is pushed forwards to drive the pedal mechanism to be stretched; when the pedal mechanism is completely extended, if the electric push rod continues to extend, the mounting plate is driven to move forwards relative to the fixing plate and sink properly, and meanwhile, the backrest mechanism is driven to tilt backwards, so that a user can lie down completely; the electric push rod is contracted to drive the backrest mechanism and the pedal mechanism to reset.
In this embodiment, the three-link assembly one 21 is further configured to: the three-link assembly one 21 has a first front link 213, a first rear link 211, and a first intermediate link 212. The upper end and the lower end of the first front link 213 are pivotally connected to the front ends of the mounting plate 24 and the first intermediate link 212, respectively, by pivot shafts. The upper end and the lower end of the first rear link 211 are respectively pivoted to the mounting plate 24 and the rear end of the first middle link 212, and the middle of the first rear link 211 is pivoted to a link in the pedal assembly through a link 26. With this structure, a first four-side swing structure can be formed between the first front link 213, the first rear link 211, the first intermediate link 212, and the mounting plate 24, so that the first front link 213, the first rear link 211, and the first intermediate link 212 can swing with respect to the mounting plate 24.
The three-link assembly two 22 is further configured to: the third link assembly two 22 has a second front link 223, a second rear link 221, and a second intermediate link 222. The lower end and the middle portion of the second front link 223 are respectively pivoted to the front end of the first middle link 212 and the front end of the second middle link 222 through pivot shafts. The lower end and the upper end of the second rear link 221 are respectively pivoted to the rear end of the first intermediate link 212 and the rear end of the second intermediate link 222 through pivot shafts. With this structure, a second four-side rocking mechanism is formed among the second front link 223, the second rear link 221, the second intermediate link 222, and the first intermediate link 212, which facilitates the rocking of the three-link assembly two 22 relative to the mounting plate 24.
Connecting-rod assembly three 23 is further arranged to: the link assembly three 23 has a third rear link 231, a third front upper link 232, and a third front lower link 233. Both ends of the third rear link 231 are pivotally connected to the middle portion of the second rear link 221 and the middle rear portion of the fixing plate 25 through pivot shafts, respectively. The two ends of the third front upper connecting rod 232 are respectively pivoted to the upper end of the second front connecting rod 223 and the upper side part of the front end of the fixing plate 25 through pivot shafts. Both ends of the third front lower link 233 are pivotally connected to the middle lower portion of the second front link 223 and the front lower portion of the fixing plate 25 through pivot shafts, respectively.
Through the structural arrangement of the three-link assembly I21, the three-link assembly II 22 and the link assembly III 23, on the basis of realizing the full-link connection of the fixing plate 25 and the mounting plate 24, the mounting plate 24 swings back and forth relative to the fixing plate 25 according to a preset track, the seat unit is convenient to contract and extend, and meanwhile, the contraction and extension stability is improved.
In this embodiment, for the stability of the seat unit in the retracted state, the fixing plate 25 is provided with a first positioning member 251, and the first positioning member 251 is abutted by the link assembly three 23 in the retracted state.
The first positioning member 251 is further configured to: the positioning component is a positioning pin which is fixed on the fixing plate 25 in a threaded manner. Meanwhile, the two positioning pins are respectively located at the front side and the rear side of the fixing plate 25, so that the third rear connecting rod 231 and the third front lower connecting rod 233 can be abutted against each other.
In this embodiment, for the stability of the seat unit in the extended state, the mounting plate 24 has a second positioning member 241 thereon, and the second positioning member 241 is abutted by the three-link assembly one 21 in the extended state.
The second positioning member 241 is further configured to: the second positioning member 241 is a positioning plate formed on the mounting plate 24 and protruding from the mounting plate 24. The positioning plate has two pieces and is located at the front and rear sides of the mounting plate 24 for the first front connecting rod 213 and the second front connecting rod 223 to abut against.
In this embodiment, the mounting plate 24 is for seat mounting.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (6)
1. The utility model provides a full connecting rod mechanical stretching device of seat unit, includes pedal mechanism, seat mechanism and back mechanism, characterized by: the seat mechanism comprises a mounting plate, a fixing plate and a connecting rod assembly;
the mounting plate is connected with the fixing plate through a connecting rod assembly and can swing back and forth relative to the fixing plate; the connecting rod assembly comprises a first three-connecting-rod assembly, a second three-connecting-rod assembly and a third connecting-rod assembly;
the three-link assembly is connected to the mounting plate and forms a first four-side swinging structure with the mounting plate;
the second three-link assembly is connected to a first middle link opposite to the mounting plate in the first three-link assembly and forms a second four-side swinging structure with the first middle link;
the third connecting rod assembly is provided with a plurality of third connecting rods, and two ends of each third connecting rod are respectively pivoted between the second three connecting rod assembly and the fixing plate.
2. The full-link mechanical extension of a seating unit of claim 1, wherein: the three-link assembly I is provided with a first front link, a first rear link and a first middle link;
two ends of the first front connecting rod are respectively pivoted to the mounting plate and the front end of the first middle connecting rod;
the two ends of the first rear connecting rod are respectively pivoted to the mounting plate and the rear end part of the first middle connecting rod.
3. The full-link mechanical extension of a seating unit of claim 2, wherein: the third connecting rod assembly II is provided with a second front connecting rod, a second rear connecting rod and a second middle connecting rod;
the lower end and the middle part of the second front connecting rod are respectively pivoted to the front end of the first middle connecting rod and the front end of the second middle connecting rod;
and two ends of the second rear connecting rod are respectively pivoted to the rear end of the first middle connecting rod and the rear end of the second middle connecting rod.
4. The full-link mechanical extension of a seating unit of claim 3, wherein: the connecting rod assembly III is provided with a third rear connecting rod, a third front upper connecting rod and a third front lower connecting rod;
two ends of the third rear connecting rod are respectively pivoted to the middle part of the second rear connecting rod and the middle rear part of the fixing plate;
two ends of the third front upper connecting rod are respectively pivoted to the upper end of the second front connecting rod and the upper side part of the front end of the fixing plate;
and two ends of the third front lower connecting rod are respectively pivoted to the middle lower part of the second front connecting rod and the lower side part of the front end of the fixing plate.
5. The full-link mechanical extension of a seating unit of claim 1, wherein: and a first positioning component is arranged on the fixing plate and is used for abutting against the connecting rod assembly III in a furled state.
6. The full-link mechanical extension of a seating unit of claim 1, wherein: the mounting plate is provided with a second positioning component, and the second positioning component is abutted by the three-link assembly in the stretching state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010242163.6A CN111297113A (en) | 2020-03-31 | 2020-03-31 | Full-link mechanical stretching device of seat unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010242163.6A CN111297113A (en) | 2020-03-31 | 2020-03-31 | Full-link mechanical stretching device of seat unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111297113A true CN111297113A (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010242163.6A Pending CN111297113A (en) | 2020-03-31 | 2020-03-31 | Full-link mechanical stretching device of seat unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111297113A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112167864A (en) * | 2020-11-09 | 2021-01-05 | 安吉县盛信办公家具有限公司 | Electric rocking device of sofa rocking chair |
| CN113475885A (en) * | 2021-08-17 | 2021-10-08 | 德沃康科技集团有限公司 | Mechanical stretching device and suspension mechanism thereof |
| CN114176346A (en) * | 2021-12-08 | 2022-03-15 | 东莞市科肯机电科技有限公司 | Ready-package seat base and simple and easy seat extension device |
| WO2023020514A1 (en) * | 2021-08-17 | 2023-02-23 | 德沃康科技集团有限公司 | Mechanical extension device and suspension mechanism thereof |
| WO2024198797A1 (en) * | 2023-03-24 | 2024-10-03 | 德沃康科技集团有限公司 | Mounting plate used for forming seat unit of sofa frame body and sofa frame body thereof |
-
2020
- 2020-03-31 CN CN202010242163.6A patent/CN111297113A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112167864A (en) * | 2020-11-09 | 2021-01-05 | 安吉县盛信办公家具有限公司 | Electric rocking device of sofa rocking chair |
| CN113475885A (en) * | 2021-08-17 | 2021-10-08 | 德沃康科技集团有限公司 | Mechanical stretching device and suspension mechanism thereof |
| WO2023020514A1 (en) * | 2021-08-17 | 2023-02-23 | 德沃康科技集团有限公司 | Mechanical extension device and suspension mechanism thereof |
| CN114176346A (en) * | 2021-12-08 | 2022-03-15 | 东莞市科肯机电科技有限公司 | Ready-package seat base and simple and easy seat extension device |
| WO2024198797A1 (en) * | 2023-03-24 | 2024-10-03 | 德沃康科技集团有限公司 | Mounting plate used for forming seat unit of sofa frame body and sofa frame body thereof |
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