CN214127770U - Mechanical stretching device for functional sofa - Google Patents
Mechanical stretching device for functional sofa Download PDFInfo
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- CN214127770U CN214127770U CN202022519687.3U CN202022519687U CN214127770U CN 214127770 U CN214127770 U CN 214127770U CN 202022519687 U CN202022519687 U CN 202022519687U CN 214127770 U CN214127770 U CN 214127770U
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- seat frame
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- leg rest
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Abstract
The utility model discloses a function sofa machinery extension device, include: the seat frame assembly comprises a seat frame connecting piece and a first seat frame supporting piece, the seat frame connecting piece is hinged with the leg placing assembly, one end of the first seat frame supporting piece is hinged to the seat frame connecting piece, and the other end of the first seat frame supporting piece is hinged to the fixed seat; the backrest assembly comprises a backrest support piece and a backrest connecting piece, the backrest support piece is hinged to the rear portion of the fixing seat, the backrest connecting piece is hinged to the rear end of the backrest support piece and the rear end of the seat frame connecting piece respectively, and the first seat frame support piece, the seat frame connecting piece, the backrest support piece and the fixing seat form five connecting rods. The utility model discloses with group's five-bar linkage such as back support piece and back connecting piece and seat frame connecting piece, the angle change of control back connecting piece has strengthened the holding power simultaneously, has promoted structural stability.
Description
Technical Field
The utility model relates to the field of furniture, concretely relates to function sofa machinery extension device.
Background
Many furniture items such as couches, sofas, and the like are currently equipped with electromechanical extension devices upon which the back, seat, and leg rest are mounted, typically a combination of various mechanical linkages operable to provide various comfort features such as independent recumbent movement of the seat assembly, as well as actuation of the extendable leg rest assembly and associated tipping of the chair frame.
However, the existing functional sofa iron frame usually adopts a multi-connecting-rod riveting structure, the number of connecting rods is large, the structure is complex, multiple molds or multiple production flows need to be arranged during processing, the number of connecting rods is large, the operation is not smooth enough, the cost is high, and the interference is easy to occur.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a function sofa mechanical stretching device constitutes five-bar linkage with back support piece and back connecting piece and seat frame connecting piece etc. and the angle change of control back connecting piece has strengthened the holding power simultaneously, has promoted structural stability.
The utility model adopts the following technical scheme:
a functional sofa mechanical stretching device comprising: the seat frame assembly comprises a seat frame connecting piece and a first seat frame supporting piece, the seat frame connecting piece is hinged with the leg placing assembly, one end of the first seat frame supporting piece is hinged to the seat frame connecting piece, and the other end of the first seat frame supporting piece is hinged to the fixed seat; the backrest assembly comprises a backrest support piece and a backrest connecting piece, the backrest support piece is hinged to the rear portion of the fixing seat, the backrest connecting piece is hinged to the rear end of the backrest support piece and the rear end of the seat frame connecting piece respectively, and the first seat frame support piece, the seat frame connecting piece, the backrest support piece and the fixing seat form five connecting rods.
Preferably, the seat frame assembly further comprises a second seat frame supporting piece, one end of the second seat frame supporting piece is hinged to the seat frame connecting piece, the other end of the second seat frame supporting piece is hinged to the fixed seat, and the fixed seat, the second seat frame supporting piece, the seat frame connecting piece and the first seat frame supporting piece form a four-bar mechanism.
Preferably, the seat frame connecting piece is inverted 'n' -shaped, the middle part of the seat frame connecting piece is a concave part, the two sides of the seat frame connecting piece are respectively provided with a first connecting part and a second connecting part, the second seat frame supporting piece is hinged to the front end of the concave part, and the first seat frame supporting piece is hinged to the rear end of the concave part.
As preferred, put the leg subassembly including putting leg plate frame, first leg board connecting piece, second leg board connecting piece, third leg board connecting piece, fourth leg board connecting piece, the one end of putting leg plate frame is articulated with the one end of first leg board connecting piece, and the other end of first leg board connecting piece and the one end of fourth leg board connecting piece are articulated, and the other end of putting leg plate frame is articulated with the one end of second leg board connecting piece, and the other end of second leg board connecting piece is articulated with the one end of third leg board connecting piece.
Preferably, the other end of the fourth leg rest board connecting piece is hinged to the front part of the first connecting part of the seat frame connecting piece, and the other end of the third leg rest board connecting piece is hinged to the first connecting part of the seat frame connecting piece.
Preferably, the fourth leg placing plate connecting piece is provided with a first limiting nail, and the corresponding position on the second leg placing plate connecting piece is provided with a first limiting groove matched with the first limiting nail.
Preferably, a second limiting nail is arranged on a second connecting part of the seat frame connecting piece, and a second limiting groove is arranged between two hinged joints of the backrest connecting piece and the backrest supporting piece hinged to the seat frame connecting piece.
Preferably, the front part of the concave part of the seat frame connecting piece is provided with a third limiting nail, and the corresponding position on the first seat frame supporting piece is provided with a matched third limiting groove.
Preferably, the drive rod is connected between two fourth leg rest panel connections.
Preferably, still include drive assembly, drive assembly is including setting up driving motor on the fixing base, the push rod of being connected with driving motor, with push rod articulated actuating lever, the actuating lever is connected between two sets of leg rest subassemblies.
Compared with the prior art, the utility model has the advantages of it is following:
1. the first seat frame supporting piece, the seat frame connecting piece, the backrest supporting piece and the base connecting piece form a five-link mechanism, the angle change of the backrest connecting piece is controlled, meanwhile, the supporting force is enhanced, and the structural stability is improved.
2. On the premise of ensuring reliable conversion of three postures, the seat frame assembly is simplified into a four-bar mechanism, so that the structural stability is improved, and the purposes of saving materials and saving cost are achieved.
3. The backrest support is designed to be L-shaped, so that the backrest connecting piece can keep slow and smooth in the rotating process.
4. When the lying posture is reached, the second limiting nail and the third limiting nail stop moving forwards integrally under the combined action, and the stability of the integral structure is enhanced.
5. When the backrest connecting piece bears a heavy object, the second limiting nail and the third limiting nail provide horizontal supporting force, the backrest supporting piece, the first seat frame supporting piece and the second seat frame supporting piece provide vertical supporting force together, and the structure is stable.
Drawings
Fig. 1 is a schematic view of the sitting position structure of the stretching device.
Fig. 2 is a sitting posture three-dimensional structure diagram of the stretching device.
Fig. 3 is a schematic view of the TV posture of the stretching apparatus.
Fig. 4 is a partially enlarged view of a portion a of fig. 3.
Fig. 5 is a partially enlarged view of a portion B of fig. 3.
Fig. 6 is a partially enlarged view of a portion C of fig. 3.
Fig. 7 is a perspective view of the TV pose of the stretching apparatus.
Fig. 8 is a schematic view of the lying position of the stretching device.
Fig. 9 is a schematic view of the lying posture of the stretching device.
In the figure, a fixing base 1, a base connecting piece 101, a leg rest assembly 2, a leg rest board 201, a first leg rest board connecting piece 202, a second leg rest board connecting piece 203, a third leg rest board connecting piece 204, a fourth leg rest board connecting piece 205, a first limiting groove 206, a seat frame connecting piece 3, a concave portion 301, a first connecting portion 302, a second connecting portion 303, a second limiting nail 304, a third limiting nail 305, a first seat frame supporting piece 4, a second seat frame supporting piece 5, a third limiting groove 501, a backrest supporting piece 6, a backrest connecting piece 7, a second limiting groove 701, a driving assembly 8, a driving motor 801, a push rod 802, a driving rod 9 and a first limiting nail 10.
Detailed Description
In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1-9, a functional sofa extension device comprises: the fixed seat 1 is formed by connecting four base connecting pieces 101 end to end and is positioned at the bottom of the device; the leg placing components 2 are symmetrically arranged on the left side and the right side of the fixed seat; the seat frame components are symmetrically arranged on the left side and the right side of the fixed seat; the backrest components are symmetrically arranged at the left side and the right side of the fixed seat; the driving assembly 8 comprises a driving motor 801 arranged on the fixed seat 1, a push rod 802 connected with the driving motor 801 and a driving rod 9 hinged with the push rod 802, and the driving rod 9 is connected between the two groups of leg rest assemblies 2;
the seat frame assembly includes: the seat frame connecting pieces 3 are symmetrically arranged on the left side and the right side of the fixed seat, are of bent piece structures and are hinged with the two positions at the rear end of the leg placing component 2; one end of the second seat frame supporting piece 5 is hinged on the seat frame connecting piece 3, and the other end of the second seat frame supporting piece is hinged on the fixed seat 1; one end of the first seat frame supporting piece 4 is hinged to the seat frame connecting piece 3, the other end of the first seat frame supporting piece 4 is hinged to the fixed seat 1, the base connecting piece 101, the second seat frame supporting piece 5, the seat frame connecting piece 3 and the first seat frame supporting piece 4 form a four-bar mechanism, and the seat frame assembly is simplified into the four-bar mechanism on the premise of ensuring reliable conversion of three postures (namely sitting posture, TV posture and lying posture), so that the structural stability is improved, and the purposes of saving materials and saving cost are achieved; the backrest assembly includes: the backrest support part 6 is of a bent part structure, and one end of the backrest support part is hinged to the rear part of the fixed seat 1; the backrest connecting piece 7 is of a triangular structure, two corner structures are hinged to the rear portions of the backrest supporting piece 6 and the seat frame connecting piece 3 respectively, the first seat frame supporting piece 4, the seat frame connecting piece 3, the backrest connecting piece 7, the backrest supporting piece 6 and the base connecting piece 101 form five connecting rods, the angle change of the backrest connecting piece is controlled, meanwhile, the supporting force is enhanced, and the structural stability is improved.
Seat frame connecting piece 3 is for "nearly" font of falling, and the middle part is depressed part 301, and both sides are first connecting portion 302 and second connecting portion 303 respectively, and second seat frame support piece articulates in depressed part 301 front end, and first seat frame support piece 4 articulates in depressed part 301 rear end.
The other end of the fourth leg rest board connecting element 205 is hinged to the front part of the first connecting part 302 of the seat frame connecting element 3, and the other end of the third leg rest board connecting element 204 is hinged to the middle part of the first connecting part 302 of the seat frame connecting element 3.
A first limit nail 10 is arranged on the fourth leg rest board connecting piece 205, and a first limit groove 206 matched with the fourth leg rest board connecting piece is arranged at the corresponding position on the second leg rest board connecting piece 203.
A second limit pin 304 is arranged on the second connecting portion 303 of the seat frame connecting piece 3, and a second limit groove 701 is arranged between two hinged points of the backrest connecting piece 7, the backrest supporting piece 6 and the seat frame connecting piece 3.
The front part of the recessed part 301 of the seat frame connecting piece 3 is provided with a third limiting nail 305, and the corresponding position on the second seat frame supporting piece 5 is provided with a matched third limiting groove 501. When the backrest connecting piece bears a heavy object, the second limiting nail and the third limiting nail provide horizontal supporting force, the backrest supporting piece, the first seat frame supporting piece and the second seat frame supporting piece provide vertical supporting force together, and the structure is stable.
The backrest support member 6 is an L-shaped bent member, so that the backrest connecting member 6 can be slowly and smoothly rotated.
In the embodiment, the weight of the whole iron frame is reduced by about 30% through accounting, so that the purposes of saving materials and saving cost are achieved.
In this embodiment, the driving motor is a driving source, when the driving motor operates in a forward rotation mode, the push rod 802 extends outwards and pulls the driving rod 9 to move outwards, so as to drive the leg rest assembly to move forwards and open, and when the leg rest assembly is completely opened, the first limiting nail 10 is embedded into the first limiting groove 206, so that the leg rest assembly stops relative movement and changes from a sitting posture to a TV posture; the driving motor continues to move to drive the whole stretching device to be opened forwards, a four-bar linkage formed by the base connecting piece 101, the second seat frame supporting piece 5, the seat frame connecting piece 3 and the first seat frame supporting piece 4 moves forwards, the seat frame connecting piece 3 is represented as moving forwards and upwards to reach a lying position, and at the moment, the seat frame connecting piece 3 rises by 104mm and moves forwards and translates by 147 mm; in the movement process of the four-bar linkage mechanism, five-bar linkage synchronous forward movement is formed by the first seat frame supporting piece 4, the seat frame connecting piece 3, the backrest connecting piece 7, the backrest supporting piece 6 and the base connecting piece 101, the backrest connecting piece 7 is driven by the backrest supporting piece 6 to rotate, 35 degrees of rotation is achieved from the TV posture to the lying posture, due to the fact that the backrest supporting piece 6 is designed to be in an L shape, the backrest connecting piece 7 can keep slow and smooth in the rotation process, when the lying posture is achieved, the forward movement is stopped under the combined action of the second limiting nail 304 and the third limiting nail 305, when the backrest connecting piece 7 bears heavy objects, the second limiting nail 304 and the third limiting nail 305 provide horizontal supporting force, the L-shaped backrest supporting piece 6, the second seat frame supporting piece 5 and the first seat frame supporting piece 4 provide vertical supporting force, and the structure is more stable. In the whole rotating process, the driving motor drives the seat frame connecting piece 3 to move forwards, the first seat frame supporting piece 4, the second seat frame supporting piece 5, the backrest supporting piece 6 and the backrest connecting piece 7 are driven to move in succession, and the rotation of the backrest connecting piece 7 controls the rotation of the backrest part of the sofa.
The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is defined by the scope defined by the claims, and a plurality of modifications and decorations made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the protection scope of the present invention.
Claims (10)
1. A functional sofa mechanical stretching device comprising: a fixed seat positioned at the bottom of the device, a leg placing component, a seat frame component and a backrest component which are symmetrically arranged at the left side and the right side of the fixed seat, and is characterized in that,
the seat frame assembly comprises a seat frame connecting piece and a first seat frame supporting piece, the seat frame connecting piece is hinged with the leg placing assembly, one end of the first seat frame supporting piece is hinged to the seat frame connecting piece, and the other end of the first seat frame supporting piece is hinged to the fixed seat;
the backrest assembly comprises a backrest support piece and a backrest connecting piece, the backrest support piece is hinged to the rear portion of the fixing seat, the backrest connecting piece is hinged to the rear end of the backrest support piece and the rear end of the seat frame connecting piece respectively, and the first seat frame support piece, the seat frame connecting piece, the backrest support piece and the fixing seat form five connecting rods.
2. The mechanical extension device of claim 1, wherein the seat frame assembly further comprises a second seat frame supporting member, one end of the second seat frame supporting member is hinged to the seat frame connecting member, the other end of the second seat frame supporting member is hinged to the fixed seat, and the fixed seat, the second seat frame supporting member, the seat frame connecting member and the first seat frame supporting member form a four-bar linkage.
3. The mechanical stretcher for functional sofa according to claim 1 or 2, wherein the seat frame connecting member is of inverted "shape, the middle part is a recessed portion, the two sides are respectively a first connecting portion and a second connecting portion, the second seat frame supporting member is hinged to the front end of the recessed portion, and the first seat frame supporting member is hinged to the rear end of the recessed portion.
4. A functional sofa extension device according to claim 2, wherein the leg rest assembly comprises a leg rest plate frame, a first leg rest plate connecting piece, a second leg rest plate connecting piece, a third leg rest plate connecting piece, and a fourth leg rest plate connecting piece, wherein one end of the leg rest plate frame is hinged to one end of the first leg rest plate connecting piece, the other end of the first leg rest plate connecting piece is hinged to one end of the fourth leg rest plate connecting piece, the other end of the leg rest plate frame is hinged to one end of the second leg rest plate connecting piece, and the other end of the second leg rest plate connecting piece is hinged to one end of the third leg rest plate connecting piece.
5. The mechanical stretcher for functional sofa according to claim 4, wherein the other end of the fourth leg rest connecting member is hinged to the front part of the first connecting portion of the seat frame connecting member, and the other end of the third leg rest connecting member is hinged to the first connecting portion of the seat frame connecting member.
6. The mechanical extension device of claim 4, wherein the fourth leg rest connecting member is provided with a first limiting nail, and the second leg rest connecting member is provided with a first matching limiting groove at a corresponding position.
7. The mechanical extension device for functional sofa as claimed in claim 4, wherein the second connecting part of the seat frame connecting member is provided with a second limiting nail, and a second limiting groove is provided between two hinge points of the backrest connecting member and the backrest supporting member.
8. The mechanical extension device of claim 4, wherein the front portion of the recessed portion of the seat frame connecting member is provided with a third limiting nail, and the corresponding position on the first seat frame supporting member is provided with a matching third limiting groove.
9. The mechanical functional sofa stretcher of claim 4 wherein the drive rod is connected between the two fourth leg rest connectors.
10. The mechanical extension device for functional sofa according to claim 1, further comprising a driving assembly, wherein the driving assembly comprises a driving motor disposed on the fixing base, a push rod connected with the driving motor, and a driving rod hinged with the push rod, and the driving rod is connected between the two leg rest assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022519687.3U CN214127770U (en) | 2020-11-04 | 2020-11-04 | Mechanical stretching device for functional sofa |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022519687.3U CN214127770U (en) | 2020-11-04 | 2020-11-04 | Mechanical stretching device for functional sofa |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214127770U true CN214127770U (en) | 2021-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022519687.3U Active CN214127770U (en) | 2020-11-04 | 2020-11-04 | Mechanical stretching device for functional sofa |
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| Country | Link |
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| CN (1) | CN214127770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024031863A1 (en) * | 2022-08-09 | 2024-02-15 | 锐迈科技股份有限公司 | Adjusting device for seat unit and seat unit |
-
2020
- 2020-11-04 CN CN202022519687.3U patent/CN214127770U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024031863A1 (en) * | 2022-08-09 | 2024-02-15 | 锐迈科技股份有限公司 | Adjusting device for seat unit and seat unit |
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