CN106108481B - Function sofa bracket component equipped with anti-pinch protection and stretching, extension intensifier - Google Patents
Function sofa bracket component equipped with anti-pinch protection and stretching, extension intensifier Download PDFInfo
- Publication number
- CN106108481B CN106108481B CN201610730300.4A CN201610730300A CN106108481B CN 106108481 B CN106108481 B CN 106108481B CN 201610730300 A CN201610730300 A CN 201610730300A CN 106108481 B CN106108481 B CN 106108481B
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- China
- Prior art keywords
- transmission arm
- drive rod
- connect
- arm
- connection sheet
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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
-
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
- A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nursing (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The present invention relates to the function sofa bracket components equipped with anti-pinch protection and stretching, extension intensifier; including main support, backrest module, drive component and telescopic component; telescopic component includes transmission arm, actuating arm, Padfoot and small sole, and transmission arm is connect with drive component and Padfoot, small sole；Transmission arm includes the first transmission arm and the second transmission arm；First transmission arm is equipped with the protection catch outwardly protruded, and protection catch connect with the first transmission arm and formed overall structure, and the second transmission arm is connect with Padfoot and small sole simultaneously；First connection sheet is welded and fixed with preceding drive rod, and the second connection sheet is welded and fixed with rear drive rod.The present invention adds small sole, increases the length of sofa leg rest；The protection catch and the second transmission arm of the first transmission arm of transmission arm telescopic process are overlapped always, do not make shear action, eliminate security risk.Structure of the invention is compacter, scope of application bigger, easy for installation, safe to use, comfortable.
Description
Technical field
The present invention relates to sofa technical fields, especially a kind of to be equipped with anti-pinch protection, small sole and stretch intensifier
Function sofa bracket component.
Background technology
Existing electric expansion multifunction sofa, also known as function sofa can be used as common sofa after contraction, be stretched
It can be used again as divan after exhibition, it is easy to control, it is gradually very popular in market at home and abroad using comfortable.With electricity
The safety and stability problem of the extensive use of dynamic multifunction sofa, Electric sofa is more prominent.For example, function sofa is in electricity
When carrying out expanding-contracting action under machine driving, the gap gradually deformed can be formed between two transmission arm, and the gap is with biography
Shear action is made in the opening of swing arm and contraction.At this point, if there is hand is stretched into above-mentioned gap by children, i.e., children can be caused seriously
Injury.If there is limbs are stretched into above-mentioned gap by animal, can similarly cause serious injury to animal.
Currently, there are one Padfoots for two transmission arm front ends setting of Electric sofa, and after transmission arm stretching, extension is opened, Padfoot
It can only rotate around transmission arm front end, the leg rest length of sofa can not be extended.Therefore, for the higher user of height
For, can it be declined using the comfort of Electric sofa, the scope of application is too small.
Function sofa generally comprises preceding drive rod and rear drive rod, and rear drive rod is fixedly connected with the main support of sofa, preceding
Drive rod is connect by driving motor with rear drive rod, and handrail fixed plate is arranged below in main support, and handrail fixed plate plays simultaneously
The effect of fixed support sofa.The front and back drive rod of existing capability sofa is typically the assembling being attached by rivet or screw
Structure, i.e., the main rod body of front and back drive rod are to separate before sofa installation with the connection sheet at its both ends.Part is produced in this way
The manufacture of product require it is relatively low, it is easy to process.But the sofa in later stage can not only be installed propose requirements at the higher level in this way, but also can increase
Add product packaging and the cost of transport, sometimes due to the not high stability that can make Electric sofa of installation quality reduces.To reduce
Using the comfort of sofa, user's impression of product is not ideal enough.
Invention content
The object of the present invention is to provide a kind of product with compact structure, and intensity is high, and easy for installation, scope of application bigger can
It meets the needs of different users, use is safer, is more comfortably equipped with anti-pinch protection and stretches the function sofa bracket of intensifier
Component.
The purpose of the present invention is what is realized by using following technical scheme：
Function sofa bracket component equipped with anti-pinch protection and stretching, extension intensifier, including main support, backrest module, driving
Component and telescopic component, the backrest module are located at the upper surface of main support one end, and drive component is equipped with below main support, is stretched
Component and handrail fixed plate, the driving component include driving motor, preceding drive rod, rear drive rod and driven linkage, are driven
Dynamic linkage is connect with telescopic component, and the telescopic component includes transmission arm, actuating arm, Padfoot and small sole, the biography
Swing arm and actuating arm are set as strip flat structure, and one end of transmission arm is connect by actuating arm with the driving component, transmission arm
The other end connect with the Padfoot or small sole；
The transmission arm includes the first transmission arm and the second transmission arm, and the actuating arm includes that the first actuating arm and second drive
Swing arm；First transmission arm is equipped with the protection catch outwardly protruded, which connect with the first transmission arm and formed whole
Body structure, second transmission arm are located at the lower section of the first transmission arm, during the stretching motion of transmission arm, the first transmission arm
Protection catch and the second transmission arm it is overlapped always；
One end of first transmission arm is connect with Padfoot, and the other end of the first transmission arm is connect with the first actuating arm,
One end of second transmission arm is connect with Padfoot and small sole simultaneously, and small sole is connect with Padfoot, the second transmission
The other end of arm is connect with the second actuating arm.
As the preferred technical solution of the present invention, the rear drive rod is fixedly connected with main support, and preceding drive rod passes through drive
Dynamic motor is connect with rear drive rod, and preceding drive rod is connect with driven linkage simultaneously, and driven linkage connects with backrest module
It connects；The both ends of the preceding drive rod are respectively equipped with the first connection sheet, and the first connection sheet is fixedly connected with the end of preceding drive rod, preceding
Drive rod is connect by the first connection sheet with driven linkage, and the centre of preceding drive rod is equipped with third connection sheet, preceding drive rod
It is connect with driving motor by third connection sheet；The both ends of drive rod are respectively equipped with the second connection sheet, the second connection sheet after described
It is fixedly connected with the end of rear drive rod, rear drive rod is fixedly connected by the second connection sheet with main support, in rear drive rod
Between be equipped with the 4th connection sheet, driving motor is fixedly connected by the 4th connection sheet with rear drive rod.
As the preferred technical solution of the present invention, first connection sheet and the end of preceding drive rod are welded and fixed；It is described
Second connection sheet and the end of rear drive rod are welded and fixed.
As the preferred technical solution of the present invention, the small sole is made of mounting surface and support arm, the installation of small sole
Face is horizontally disposed, and perpendicular to the support arm of small sole；Second transmission arm is connect by sole connection sheet with small sole.
As the preferred technical solution of the present invention, the support arm of the small sole is equipped with the first connecting hole and the second connection
Hole, the sole connection sheet are rotatably connected by the first connecting hole and small sole；Small sole passes through the second connecting hole and big foot
Plate is rotatably connected.
As the preferred technical solution of the present invention, the support arm of the small sole is set as arcuate structure, the support of small sole
Arm is equipped with two to three dog-ears.
As the preferred technical solution of the present invention, the mounting surface of the small sole is equipped with mounting hole.
As the preferred technical solution of the present invention, the driven linkage is located at the both sides below main support, driving connection
It is provided with intermediate supports pipe between dynamic device, intermediate supports pipe is parallel to the preceding drive rod or rear drive rod.
As the preferred technical solution of the present invention, the intermediate supports pipe passes through both sides below L-shaped connector and main support
Driven linkage connection.
As the preferred technical solution of the present invention, the backrest module includes L-shaped back bracket, holder connection sheet and backrest
Linkage piece, back-rest linked piece are equipped with the first connecting pin, second connection end and third connecting pin, and back-rest linked piece is connected by third
End is connect with the main support, and second connection end is connect with the bottom end of L-shaped back bracket, and the first connecting pin passes through holder connection sheet
It is connect with the middle part of L-shaped back bracket, and the first connecting pin is connect with driven linkage simultaneously.
The beneficial effects of the invention are as follows：Compared with the existing technology, the present invention adds small in the front end of function sofa Padfoot
Sole, after transmission arm stretching, extension is opened, small sole rotates around transmission arm and big foot front edge of board, can further increase sand
Send out the length of leg rest；After transmission arm is shunk, small sole need not increase storage space, and structure is compacter.The present invention is applicable in model
Bigger is enclosed, disclosure satisfy that the user demand of different heights, use are more comfortable.
When the present invention carries out expanding-contracting action, not will produce gap between two flexible transmission arm, transmission arm opening and
In contraction process, the protection catch and the second transmission arm of the first transmission arm are overlapped always, will not form shear action, eliminate
Security risk.The configuration of the present invention is simple is effective, and manufacturing cost is low, easy for installation, and good appearance is safe and reliable.
Preceding drive rod and rear drive rod are all improved to welded type overall structure by the present invention, and the manufacture for improving drive rod is wanted
It asks, keeps the structure of function sofa compacter, not only contribute to packaging and the transport of product, and enhance the intensity of product,
To keep Electric sofa easy for installation, stability is more preferable, uses more comfort.
Description of the drawings
Fig. 1 is the main structure diagram of bracket component of the present invention.
Fig. 2 is the overlooking structure diagram of Fig. 1.
Fig. 3 is the main structure diagram of the small sole of the present invention.
Fig. 4 is the left view structural representation of Fig. 3.
Fig. 5 is the overlooking structure diagram of Fig. 3.
Fig. 6 is the structural schematic diagram after transmission arm stretching, extension of the present invention.
Fig. 7 is the structural schematic diagram of drive rod before the present invention.
Fig. 8 is the structural schematic diagram of drive rod after the present invention.
Fig. 9 is the structural schematic diagram of back-rest linked piece of the present invention.
In figure：1, main support, 2, preceding drive rod, 3, rear drive rod, 4, driven linkage, 5, handrail fixed plate, 6, L-shaped
Back bracket, 7, holder connection sheet, 8, back-rest linked piece, 9, Padfoot, 10, small sole, 11, intermediate supports pipe, 12, first passes
Swing arm, the 13, second transmission arm, the 14, first connection sheet, the 15, second connection sheet, 16, third connection sheet, the 17, the 4th connection sheet,
18, sole connection sheet, the 19, first actuating arm, the 20, second actuating arm, the 21, first connecting hole, the 22, second connecting hole, 23, bound feet
Plate mounting surface, 24, small sole support arm, the 25, first connecting pin, 26, second connection end, 27, third connecting pin.
Specific implementation mode
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings：
As shown in Figures 1 to 9, it is equipped with anti-pinch protection and stretches the function sofa bracket component of intensifier, including main branch
Frame 1, backrest module, drive component and telescopic component, backrest module are located at the upper surface of 1 one end of main support, are set below main support 1
There are drive component, telescopic component and handrail fixed plate 5, drive component to include driving motor, preceding drive rod 2, rear drive rod 3 and drive
Dynamic linkage 4, driven linkage 4 are connect with telescopic component, and telescopic component includes transmission arm, actuating arm, Padfoot 9 and small
Sole 10, transmission arm and actuating arm are set as strip flat structure, and one end of transmission arm is connect by actuating arm with drive component, pass
The other end of swing arm is connect with Padfoot 9 or small sole 10.Transmission arm includes the first transmission arm 12 and the second transmission arm 13, driving
Arm includes the first actuating arm 19 and the second actuating arm 20；First transmission arm 12 is equipped with the protection catch outwardly protruded, protection gear
Piece connect and is formed overall structure with the first transmission arm 12, and the second transmission arm 13 is located at the lower section of the first transmission arm 12, is being driven
During the stretching motion of arm, the protection catch of the first transmission arm 12 and the second transmission arm 13 are overlapped always.First transmission
One end of arm 12 is connect with Padfoot 9, and the other end of the first transmission arm 12 is connect with the first actuating arm 19, the second transmission arm 13
One end is connect with Padfoot 9 and small sole 10 simultaneously, and small sole 10 is connect with Padfoot 9, the second transmission arm 13 it is another
End is connect with the second actuating arm 20.
In the present embodiment, the rear drive rod 3 is fixedly connected with main support 1, and preceding drive rod 2 passes through driving motor and rear-guard
Lever 3 connects, and preceding drive rod 2 is connect with driven linkage 4 simultaneously, and driven linkage 4 is connect with backrest module.Preceding driving
The both ends of bar 2 are respectively equipped with the first connection sheet 14, and the first connection sheet 14 and the end of preceding drive rod 2 are welded and fixed, preceding drive rod 2
It is connect with driven linkage 4 by the first connection sheet 14, the centre of preceding drive rod 2 is equipped with third connection sheet 16, preceding drive rod 2
It is connect with driving motor by third connection sheet 16.The both ends of drive rod 3 are respectively equipped with the second connection sheet 15, the second connection sheet afterwards
15 are welded and fixed with the end of rear drive rod 3, and rear drive rod 3 is fixedly connected by the second connection sheet 15 with main support 2, rear to drive
The centre of bar 3 is equipped with the 4th connection sheet 17, and driving motor is fixedly connected by the 4th connection sheet 17 with rear drive rod 3.
In the present embodiment, small sole 10 is made of mounting surface 23 and support arm 24, and 23 level of mounting surface of small sole 10 is set
It sets, and perpendicular to the support arm of small sole 24；Second transmission arm 13 is connect by sole connection sheet 18 with small sole 10.Small sole
10 support arm 24 is equipped with the first connecting hole 21 and the second connecting hole 22, sole connection sheet 18 pass through the first connecting hole and bound feet
Plate 10 is rotatably connected；Small sole 10 is rotatably connected by the second connecting hole 22 with Padfoot 9.The support arm 24 of small sole 10
It is set as arcuate structure, and support arm 24 is equipped with two to three dog-ears, the mounting surface 23 of small sole 10 is equipped with mounting hole.
The present embodiment driven linkage 4 is located at the both sides of 1 lower section of main support, in being provided between driven linkage 4
Between support tube 11, drive rod 2 or rear drive rod 3 before intermediate supports pipe 11 is parallel to.Intermediate supports pipe 11 by L-shaped connector with
The driven linkage 4 of 2 lower section both sides of main support connects.
The present embodiment backrest module includes L-shaped back bracket 6, holder connection sheet 7 and back-rest linked piece 8, back-rest linked piece 8
Equipped with the first connecting pin 25, second connection end 26 and third connecting pin 27, back-rest linked piece 8 passes through third connecting pin 27 and main branch
Frame 1 connects, and second connection end 26 is connect with the bottom end of L-shaped back bracket 6, and the first connecting pin 25 passes through holder connection sheet 7 and L-shaped
The middle part of back bracket 6 connects, and the first connecting pin 25 is connect with driven linkage 4 simultaneously.
Above-described embodiment is only limitted to illustrate design and the technical characteristic of the present invention, and its object is to allow those skilled in the art
Member understands the technical solution and embodiment of invention, can not limit the scope of the invention accordingly.It is every according to the present invention
Equivalent replacement or equivalence changes made by technical solution, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of function sofa bracket component equipped with anti-pinch protection and stretching, extension intensifier, including main support, backrest module, drive
Dynamic component and telescopic component, the backrest module are located at the upper surface of main support one end, and drive component is equipped with below main support, is stretched
Contracting component and handrail fixed plate, the driving component include driving motor, preceding drive rod, rear drive rod and driven linkage,
Driven linkage is connect with telescopic component, it is characterized in that：The telescopic component includes transmission arm, actuating arm, Padfoot and small
Sole, the transmission arm and actuating arm are set as strip flat structure, and one end of transmission arm passes through actuating arm and the driving component
Connection, the other end of transmission arm are connect with the Padfoot or small sole；
The transmission arm includes the first transmission arm and the second transmission arm, and the actuating arm includes the first actuating arm and the second driving
Arm；First transmission arm is equipped with the protection catch outwardly protruded, which connect with the first transmission arm and form entirety
Structure, second transmission arm are located at the lower section of the first transmission arm, during the stretching motion of transmission arm, the first transmission arm
Protect catch and the second transmission arm overlapped always；
One end of first transmission arm is connect with Padfoot, and the other end of the first transmission arm is connect with the first actuating arm, described
One end of second transmission arm is connect with Padfoot and small sole simultaneously, and small sole is connect with Padfoot, the second transmission arm
The other end is connect with the second actuating arm.
2. the function sofa bracket component according to claim 1 equipped with anti-pinch protection and stretching, extension intensifier, feature
It is：Drive rod is fixedly connected with main support after described, and preceding drive rod is connect by driving motor with rear drive rod, and preceding drive rod is same
When connect with driven linkage, driven linkage is connect with backrest module；The both ends of the preceding drive rod are respectively equipped with
A connecting piece, the first connection sheet are fixedly connected with the end of preceding drive rod, and preceding drive rod is linked by the first connection sheet and driving
Device connects, and the centre of preceding drive rod is equipped with third connection sheet, and preceding drive rod is connect by third connection sheet with driving motor；Institute
The both ends for stating rear drive rod are respectively equipped with the second connection sheet, and the second connection sheet is fixedly connected with the end of rear drive rod, rear to drive
Bar is fixedly connected by the second connection sheet with main support, and the centre of rear drive rod is equipped with the 4th connection sheet, and driving motor passes through the
Four connection sheets are fixedly connected with rear drive rod.
3. the function sofa bracket component according to claim 2 equipped with anti-pinch protection and stretching, extension intensifier, feature
It is：First connection sheet and the end of preceding drive rod are welded and fixed；Second connection sheet and the end of rear drive rod are welded
It is fixed.
4. the function sofa bracket group according to any one of claims 1 to 3 equipped with anti-pinch protection and stretching, extension intensifier
Part, it is characterized in that：The small sole is made of mounting surface and support arm, and the mounting surface of small sole is horizontally disposed, and perpendicular to small
The support arm of sole；Second transmission arm is connect by sole connection sheet with small sole.
5. the function sofa bracket component according to claim 4 equipped with anti-pinch protection and stretching, extension intensifier, feature
It is：The support arm of the small sole is equipped with the first connecting hole and the second connecting hole, and the sole connection sheet passes through the first connection
Kong Yu little soles are rotatably connected；Small sole is rotatably connected by the second connecting hole with Padfoot.
6. the function sofa bracket component according to claim 5 equipped with anti-pinch protection and stretching, extension intensifier, feature
It is：The support arm of the small sole is set as arcuate structure, and the support arm of small sole is equipped with two to three dog-ears.
7. the function sofa bracket component according to claim 6 equipped with anti-pinch protection and stretching, extension intensifier, feature
It is：The mounting surface of the small sole is equipped with mounting hole.
8. the function sofa bracket component according to claim 1 equipped with anti-pinch protection and stretching, extension intensifier, feature
It is：The driven linkage is located at the both sides below main support, and intermediate supports pipe is provided between driven linkage, intermediate
Support tube is parallel to the preceding drive rod or rear drive rod.
9. the function sofa bracket component according to claim 8 equipped with anti-pinch protection and stretching, extension intensifier, feature
It is：The intermediate supports pipe is connect by L-shaped connector with the driven linkage of both sides below main support.
10. the function sofa bracket component according to claim 1 equipped with anti-pinch protection and stretching, extension intensifier, feature
It is：The backrest module includes L-shaped back bracket, holder connection sheet and back-rest linked piece, and back-rest linked piece is equipped with the first connection
End, second connection end and third connecting pin, back-rest linked piece are connect by third connecting pin with the main support, second connection end
It being connect with the bottom end of L-shaped back bracket, the first connecting pin is connect by holder connection sheet with the middle part of L-shaped back bracket, and
First connecting pin is connect with driven linkage simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610730300.4A CN106108481B (en) | 2016-08-25 | 2016-08-25 | Function sofa bracket component equipped with anti-pinch protection and stretching, extension intensifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610730300.4A CN106108481B (en) | 2016-08-25 | 2016-08-25 | Function sofa bracket component equipped with anti-pinch protection and stretching, extension intensifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106108481A CN106108481A (en) | 2016-11-16 |
| CN106108481B true CN106108481B (en) | 2018-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610730300.4A Active CN106108481B (en) | 2016-08-25 | 2016-08-25 | Function sofa bracket component equipped with anti-pinch protection and stretching, extension intensifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106108481B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106724323A (en) * | 2016-11-29 | 2017-05-31 | 常州市凯迪电器股份有限公司 | Electric sofa clamping-proof control system |
| CN107411407A (en) * | 2017-09-08 | 2017-12-01 | 安吉县平安家具制造厂 | A kind of seat and its toe board mechanism |
| CN107713506A (en) * | 2017-10-11 | 2018-02-23 | 锐迈机械科技（吴江）有限公司 | Foot-operated extended structure and extendable bracket |
| CN108260984A (en) * | 2018-01-16 | 2018-07-10 | 锐迈机械科技（吴江）有限公司 | A kind of function mechanical extending device for sofa |
| CN108577326B (en) * | 2018-06-11 | 2023-11-03 | 深圳富利源智家生态链科技有限公司 | Furniture support structure |
| CN115500641A (en) * | 2022-09-20 | 2022-12-23 | 锐迈科技股份有限公司 | Sofa support and seat unit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7748061B2 (en) * | 2007-08-02 | 2010-07-06 | Jpd, Inc. | Sleep sofa wherein seat and back cushions provide bedding surface |
| CN102733696A (en) * | 2012-06-18 | 2012-10-17 | 广东中侨五金电器制造有限公司 | 165-degree door hinge |
| CN203207578U (en) * | 2013-04-09 | 2013-09-25 | 上海嘉度国际贸易有限公司 | Seat regulating mechanism |
| CN104886965A (en) * | 2015-07-01 | 2015-09-09 | 泰州市奥德家具配件有限公司 | Automatic sofa stretching device |
| CN204970405U (en) * | 2015-09-07 | 2016-01-20 | 浙江永艺家具股份有限公司 | Anti -pinch stretching device of upholstered armchair |
| CN206182795U (en) * | 2016-08-25 | 2017-05-24 | 泰州市姜堰区荣耀金属制品有限公司 | Function sofa bracket component with prevent pressing from both sides protection and extend reinforcing means |
-
2016
- 2016-08-25 CN CN201610730300.4A patent/CN106108481B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106108481A (en) | 2016-11-16 |
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