CN110123052A - A kind of Telescopic folding bed chair dual-purpose apparatus - Google Patents
A kind of Telescopic folding bed chair dual-purpose apparatus Download PDFInfo
- Publication number
- CN110123052A CN110123052A CN201910373606.2A CN201910373606A CN110123052A CN 110123052 A CN110123052 A CN 110123052A CN 201910373606 A CN201910373606 A CN 201910373606A CN 110123052 A CN110123052 A CN 110123052A
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- Prior art keywords
- support frame
- plate
- support
- storage box
- hinged
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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
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
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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
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
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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
- A47C13/00—Convertible chairs, stools or benches
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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
- A47C19/00—Bedsteads
- A47C19/02—Parts or details of bedsteads not fully covered in a single one of the following subgroups, e.g. bed rails, post rails
- A47C19/021—Bedstead frames
- A47C19/024—Legs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C19/00—Bedsteads
- A47C19/04—Extensible bedsteads, e.g. with adjustment of length, width, height
-
- 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
- A47C7/002—Chair or stool bases
-
- 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
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Special Chairs (AREA)
Abstract
A kind of Telescopic folding bed chair dual-purpose apparatus of the present invention is related to a kind of foldable packing up also extensible bed chair dual-purpose apparatus；Technical problem to be solved be provide a kind of telescopic folding, can be bed again can be the dual-purpose apparatus of chair；The technical solution of use are as follows: including fixing seat and telescopic mounting；The fixing seat includes horizontally disposed support storage box and is fixed on four fixing supporting legs supported below storage box, and telescopic mounting movable set is in support storage box；The structure of the telescopic mounting are as follows: support frame is quadrilateral frame structure, support frame mass activity is set in support storage box, the bottom that support frame pulls out end is hinged with the movable supporting leg for being collapsible into horizontal position, the pull-out end of support frame is also hinged with the bed mooring plate that may be folded in support frame lower portion, support frame be internally provided with can be concordant with support storage box upper surface lift support plate；The present invention is dual-purpose for realizing bed chair.
Description
Technical field
A kind of Telescopic folding bed chair dual-purpose apparatus of the present invention is related to a kind of foldable packing up also extensible bed chair two
Use device.
Background technique
Bed, chair etc. are indispensable house tool in people's daily life, especially in family, open air, hospital
The application in equal places is even more extensive.However since there are space holds than big, outdoor travel is inconvenient, narrow sky for general bed chair
Between it is inconvenient for use the disadvantages of, so be badly in need of a kind of collection seat can sit and bed lies at integrated functional device, and the device
The characteristics such as economy, practicability, telescopic folding need to be met, i.e. the device had both been able to satisfy people and has sat the need small with duty ratio of lying
It asks, and answers economical and practical.However the devices such as bed chair are not able to satisfy the demand at present.
Summary of the invention
The present invention overcomes the shortcomings of the prior art, and technical problem to be solved is to provide a kind of telescopic folding
, can be the dual-purpose apparatus that bed can be chair again.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of Telescopic folding bed chair dual-purpose apparatus, including fixing seat and telescopic mounting；
The fixing seat includes horizontally disposed support storage box and four fixed supports being fixed below support storage box
Leg, the support storage box side opening, telescopic mounting movable set is in support storage box；
The structure of the telescopic mounting are as follows: including support frame, movable supporting leg, bed mooring plate and lift support plate, the branch
Support is quadrilateral frame structure, is provided with sliding rail between bottom and support storage box, support frame mass activity is set in branch
It supports in storage box, one end of support frame is to pull out end, and the other end is limited in support storage box, and support frame pulls out the bottom hinge at end
It is connected to the movable supporting leg for being collapsible into horizontal position, the pull-out end of support frame, which is also hinged with, may be folded in support frame lower portion
Bed mooring plate, the position-limit mechanism of restricted bed mooring plate tilt angle is set between bed mooring plate and support frame, and the inside of support frame is set
Being equipped with can be with the concordant lift support plate in support storage box upper surface, and lift support plate is by fixing on the support frame multiple
Spring supporting.
The switch dress of a control lift support Board position is provided on telescopic three frames of support frame as described above
It sets；
The structure of the switching device are as follows: including button, connecting plate, pressure spring and block, be hinged on support frame in the middle part of connecting plate
On, button is fixed on one end of connecting plate, and the other end of connecting plate is fixed with pressure spring and block, and the pressure spring and block distinguish position
In the two sides of connecting plate, and pressure spring is located at the ipsilateral of connecting plate with button；
The position that lift support plate edge and block are adapted is provided with limiting groove, block quilt when lift support plate bounces
Pressure spring is pressed on the side of lift support plate, and the limit that block is located in lift support plate when lift support plate is depressed is recessed
In slot.
The position-limit mechanism of the limitation bed mooring plate tilt angle includes first connecting rod, second connecting rod and sliding block, first connecting rod
One end be hinged on bed mooring plate, one end of the other end and second connecting rod is hinged, and the other end of second connecting rod is hinged on sliding block,
It is provided with the groove that can accommodate first connecting rod and second connecting rod on the upper surface of support frame as described above, is provided in groove two sidewalls
Elongated hole, the both ends of sliding block are located in two elongated holes；
The position-limit mechanism is two sets, is located at the two sides of bed mooring plate.
Control position-limit mechanism is provided between the movable supporting leg and support frame, the control position-limit mechanism includes third
Connecting rod, fourth link, control-rod, handle, compression bar, the first spring, briquetting, second spring and slide bar, one end of fourth link with
Movable supporting midleg is hinged, and the other end of fourth link and one end of third connecting rod are hinged, and the other end of third connecting rod is solid
It is scheduled in shaft, hingedly on the support frame, shaft is also fixedly connected with one end of control-rod shaft, and the other end of control-rod is fixed
There is slide bar and be hinged with handle, blind hole is provided on slide bar, briquetting in the blind hole, is supported by second spring movable set
The position being adapted on frame with slide bar rotary motion trace is provided with the sliding slot that one section of central angle is 90 °, is provided on the upper surface of support frame
One T-type hole is connected to the upper end of the sliding slot, and T shape compression bar is located in the T-type hole and is provided between its shaft shoulder and hole shoulder
First spring, when slide bar turns to the upper end of sliding slot, briquetting can enter in T-type hole under the action of second spring.
The back side of the bed mooring plate is provided with handle groove, and knob is articulated in handle groove.
The present invention has the advantages that compared with prior art.
1, in the present invention, when telescopic mounting is withdrawn in support storage box, the present invention is seat, can sit people and occupy empty
Between it is small, when telescopic mounting pulls out support storage box, the present invention is bed, and can lie down rest, in short, present invention collection seat and bed
Function be integrated, it is economical and practical.
2, telescopic mounting is pulled out as bed in use, lift support plate can bounce and support storage box in the present invention
Upper surface is concordant, improves usage comfort, and lift support plate, by the control of three switching devices, what can be consolidated rests on
It rises and two positions of pressure, function-stable conveniently leans in addition, also having the bed mooring plate of the tiltable positioning of folding storage
It lies.
3, the movable supporting leg in the present invention hingedly on the support frame, and equipped with control position-limit mechanism, facilitates movable branch
Support leg packing up and putting down, and has locking function.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the folded structural schematic diagram of telescopic mounting in the present invention.
Fig. 3 is the structural schematic diagram that storage box is supported in the present invention.
Fig. 4 is the structural schematic diagram of position-limit mechanism at bed mooring plate in the present invention.
Fig. 5 is the partial enlarged view in Fig. 4 at B.
Fig. 6 is the structural schematic diagram of switching device at lift support plate in the present invention.
Fig. 7 is the structural schematic diagram of movable supporting leg in the present invention.
Fig. 8 is that control position-limit mechanism is located at the sectional view at support frame in the present invention.
Fig. 9 is the structural schematic diagram controlled in position-limit mechanism at slide bar in the present invention.
Figure 10 uses schematic diagram for of the invention.
In figure: 1 is fixing seat, and 11 be support storage box, and 12 be fixing supporting legs, and 2 be telescopic mounting, and 21 be support
Frame, 22 be movable supporting leg, and 23 be bed mooring plate, and 231 be handle groove, and 232 be knob, and 24 be lift support plate, and 25 be limit
Mechanism, 251 be first connecting rod, and 252 be second connecting rod, and 253 be sliding block, and 26 be switching device, and 261 be button, and 262 be connection
Plate, 263 be pressure spring, and 264 be block, and 27 be control position-limit mechanism, and 271 be third connecting rod, and 272 be fourth link, and 273 be control
Bar, 274 be handle, and 275 be compression bar, and 276 be the first spring, and 277 be briquetting, and 278 be second spring, and 279 be slide bar.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawing.
As shown in figs. 1-9, a kind of Telescopic folding bed chair dual-purpose apparatus of the present invention, including fixing seat 1 and can stretch
Compression apparatus 2；The fixing seat 1 includes horizontally disposed four for supporting storage box 11 and being fixed on 11 lower section of support storage box
Fixing supporting legs 12,11 side of the support storage box opening, 2 movable set of telescopic mounting is in support storage box 11；
The structure of the telescopic mounting 2 are as follows: including support frame 21, movable supporting leg 22, bed mooring plate 23 and lift support plate
24, support frame as described above 21 is quadrilateral frame structure, is provided with sliding rail between bottom and support storage box 11, support frame 21 is whole
Body movable set is in support storage box 11, and one end of support frame 21 is to pull out end, and the other end is limited in support storage box 11,
The bottom that support frame 21 pulls out end is hinged with the movable supporting leg 22 for being collapsible into horizontal position, and the pull-out end of support frame 21 is also cut with scissors
It is connected to the bed mooring plate 23 that may be folded in 21 lower portion of support frame, restricted bed mooring plate is set between bed mooring plate 23 and support frame 21
The position-limit mechanism 25 of 23 tilt angles, being internally provided with for support frame 21 can be with the concordant lift in support 11 upper surface of storage box
Support plate 24, lift support plate 24 is by multiple spring supportings for being fixed on support frame 21.
Opening for control 24 position of lift support plate is provided on 21 telescopic three frames of support frame as described above
Close device 26；
The structure of the switching device 26 are as follows: including button 261, connecting plate 262, pressure spring 263 and block 264, connecting plate 262
Middle part is hinged on support frame 21, and button 261 is fixed on one end of connecting plate 262, and the other end of connecting plate 262 is fixed with pressure spring
263 and block 264, the pressure spring 263 and block 264 are located at the two sides of connecting plate 262, and pressure spring 263 with 261, button
In the ipsilateral of connecting plate 262；
The position that 24 edge of lift support plate and block 264 are adapted is provided with limiting groove, and lift support plate 24 bounces
When block 264 side of lift support plate 24 is pressed on by pressure spring, block 264 is located at lifting when lift support plate 24 is depressed
In limiting groove in formula support plate 24.
The position-limit mechanism 25 of limitation 23 tilt angle of bed mooring plate includes first connecting rod 251, second connecting rod 252 and sliding block
253, one end of first connecting rod 251 is hinged on bed mooring plate 23, and one end of the other end and second connecting rod 252 is hinged, second connecting rod
252 other end is hinged on sliding block 253, and first connecting rod 251 and can be accommodated by being provided on the upper surface of support frame as described above 21
The groove of two connecting rods 252 is provided with elongated hole in groove two sidewalls, and the both ends of sliding block 253 are located in two elongated holes；
The position-limit mechanism 25 is two sets, is located at the two sides of bed mooring plate 23.
Control position-limit mechanism 27, the control position-limit mechanism 27 are provided between the movable supporting leg 22 and support frame 21
Including third connecting rod 271, fourth link 272, control-rod 273, handle 274, compression bar 275, the first spring 276, briquetting 277,
Two springs 278 and slide bar 279, one end of fourth link 272 and the middle part of movable supporting leg 22 are hinged, fourth link 272 it is another
One end and one end of third connecting rod 271 are hinged, and the other end of third connecting rod 271 is fixed in shaft, and shaft is hinged on support frame
On 21, shaft is also fixedly connected with one end of control-rod 273, and the other end of control-rod 273 is fixed with slide bar 279 and is hinged with hand
Handle 274, is provided with blind hole on slide bar 279, briquetting by 278 movable set of second spring in the blind hole, on support frame 21
The position being adapted with 279 rotary motion trace of slide bar is provided with the sliding slot that one section of central angle is 90 °, is provided on the upper surface of support frame 21
One T-type hole is connected to the upper end of the sliding slot, and T shape compression bar 275 is located in the T-type hole and is arranged between its shaft shoulder and hole shoulder
There is the first spring 276, when slide bar 279 turns to the upper end of sliding slot, briquetting 277 can enter T under the action of second spring 278
In type hole.
The back side of the bed mooring plate 23 is provided with handle groove 231, and knob 232 is articulated in handle groove 231.
The bed mooring plate 23 is hinged with support frame 21, has the position-limit mechanism 25 for limiting 23 tilt angle of bed mooring plate,
The position-limit mechanism 25 is two connecting rods and a sliding block 253, and sliding block 253 can carry out straight reciprocating motion in elongated hole, together
When first connecting rod 251 and second connecting rod 252 correspondence carry out folding and unfolding movement, do not influence bed mooring plate 23 folding, but limitation
The maximum expanded angle of bed mooring plate 23, when bed mooring plate 23 folds into support frame 21, first connecting rod 251 and second connecting rod
In groove on 252 income support frames 21.
In the control position-limit mechanism 27 being arranged between the movable supporting leg 22 and support frame 21, handle 274 and control-rod
273 is hinged, i.e., it is folding storage, and will not occupy horizontal space influences in the income support storage box 1 of telescopic mounting 2.
As shown in Figure 10, application method of the invention is as follows.
When needing to realize a bed function, telescopic mounting 2 is pulled out, position-limit mechanism 27 is controlled by operation, makes movable supporting
Leg 22 goes to vertical position, specific operation process from horizontal position are as follows: by 274 rotation control rod 273 of handle, makes slide bar 279
Upper end is slided into from the lower end of sliding slot, in the process, the third connecting rod 271 being fixedly connected with control-rod 273 drives the 4th to connect
Bar 272 acts, so that movable supporting leg 22 is driven to rotate 90 ° of arrival vertical positions, at this point, briquetting 277 is sprung into T-type hole, and it is real
Now lock.Then 23 pull-up of bed mooring plate is turned to maximum angle and is limited by position-limit mechanism 25, finally pressed by knob 232
The switching device 26 in three directions, lift support plate 24 bounce the position concordant with support 11 upper surface of storage box, switch
Block 264 in device 26 compresses lift support plate 24 from three directions under the action of pressure spring 263, at this point, bed function is real
It is existing.
When needing to realize functions of seat, three switching devices 26 are pressed, block 264 no longer compresses lift support plate 24,
Lift support plate 24 is depressed manually, trip switch device 26, block 264 enters lift branch under the action of pressure spring 263
Lift support plate 24 is blocked in limiting groove on fagging 24, then turns folding bed mooring plate 23 in support frame 21,
Control position-limit mechanism 27 is operated again, so that movable supporting leg 22 is gone to horizontal position, specific operation process from vertical position are as follows: to press
Briquetting 277 is pressed into sliding slot by compression bar 275, by 274 rotation control rod 273 of handle, keeps slide bar 279 sliding from the upper end of sliding slot
It moves to lower end, in the process, the third connecting rod 271 being fixedly connected with control-rod 273 drives fourth link 272 to act, thus
Movable supporting leg 22 is driven to rotate 90 ° of arrival horizontal positions, at this point, briquetting 277 is in sliding slot under the action of second spring 278
It is in close contact sliding slot, realizes and compresses.So far, the folding of telescopic mounting 2 finishes, and telescopic mounting 2 is finally pushed into storage support
In box 11, functions of seat is realized.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Various change out.
Claims (5)
1. a kind of Telescopic folding bed chair dual-purpose apparatus, it is characterised in that: including fixing seat (1) and telescopic mounting (2)；
The fixing seat (1) includes horizontally disposed four for supporting storage box (11) and being fixed below support storage box (11)
Fixing supporting legs (12), the support storage box (11) side opening, telescopic mounting (2) movable set is in support storage box
(11) in；
The structure of the telescopic mounting (2) are as follows: including support frame (21), movable supporting leg (22), bed mooring plate (23) and lifting
Formula support plate (24), support frame as described above (21) are quadrilateral frame structure, are provided between bottom and support storage box (11)
Sliding rail, support frame (21) mass activity are set in support storage box (11), and one end of support frame (21) is to pull out end, the other end
It is limited in support storage box (11), the bottom that support frame (21) pulls out end is hinged with the movable supporting for being collapsible into horizontal position
Leg (22), the pull-out end of support frame (21) are also hinged with the bed mooring plate (23) that may be folded in support frame (21) lower portion, bed mooring
The position-limit mechanism (25) of restricted bed mooring plate (23) tilt angle is set between plate (23) and support frame (21), support frame (21)
It is internally provided with lift support plate (24) that can be concordant with support storage box (11) upper surface, lift support plate (24) is by solid
The multiple spring supportings being scheduled on support frame (21).
2. a kind of Telescopic folding bed chair dual-purpose apparatus according to claim 1, it is characterised in that: support frame as described above
(21) switching device (26) of control lift support plate (24) position is provided on telescopic three frames；
The structure of the switching device (26) are as follows: including button (261), connecting plate (262), pressure spring (263) and block (264),
It is hinged in the middle part of connecting plate (262) on support frame (21), button (261) is fixed on one end of connecting plate (262), connecting plate
(262) the other end is fixed with pressure spring (263) and block (264), and the pressure spring (263) and block (264) are located at connection
The two sides of plate (262), and pressure spring (263) is located at the ipsilateral of connecting plate (262) with button (261)；
The position that lift support plate (24) edge and block (264) are adapted is provided with limiting groove, lift support plate
(24) block (264) is pressed on the side of lift support plate (24) by pressure spring when bouncing, when lift support plate (24) is depressed
Block (264) is located in the limiting groove on lift support plate (24).
3. a kind of Telescopic folding bed chair dual-purpose apparatus according to claim 1 or 2, it is characterised in that: the limitation
The position-limit mechanism (25) of bed mooring plate (23) tilt angle includes first connecting rod (251), second connecting rod (252) and sliding block (253), and
One end of one connecting rod (251) is hinged on bed mooring plate (23), and the other end and the one end of second connecting rod (252) are hinged, second connecting rod
(252) the other end is hinged on sliding block (253), and first connecting rod can be accommodated by being provided on the upper surface of support frame as described above (21)
(251) and the groove of second connecting rod (252) it, is provided with elongated hole in groove two sidewalls, the both ends of sliding block (253) are located at
In two elongated holes；
The position-limit mechanism (25) is two sets, is located at the two sides of bed mooring plate (23).
4. a kind of Telescopic folding bed chair dual-purpose apparatus according to claim 1 or 2, it is characterised in that: the activity
Control position-limit mechanism (27) is provided between supporting leg (22) and support frame (21), the control position-limit mechanism (27) includes third
Connecting rod (271), fourth link (272), control-rod (273), handle (274), compression bar (275), the first spring (276), briquetting
(277), second spring (278) and slide bar (279), one end of fourth link (272) and the middle part of movable supporting leg (22) are hinged,
The other end of fourth link (272) and one end of third connecting rod (271) are hinged, and the other end of third connecting rod (271), which is fixed on, to be turned
On axis, shaft is hinged on support frame (21), and shaft is also fixedly connected with one end of control-rod (273), control-rod (273) it is another
One end is fixed with slide bar (279) and is hinged with handle (274), and slide bar is provided with blind hole on (279), and briquetting passes through second spring
(278) for movable set in the blind hole, the position being adapted on support frame (21) with slide bar (279) rotary motion trace is provided with one section
Central angle is 90 ° of sliding slot, is provided with a T-type hole on the upper surface of support frame (21) and is connected to the upper end of the sliding slot, T shape pressure
Bar (275) is located in the T-type hole and is provided with the first spring (276) between its shaft shoulder and hole shoulder, when slide bar (279) turns to
When the upper end of sliding slot, briquetting (277) can enter in T-type hole under the action of second spring (278).
5. a kind of Telescopic folding bed chair dual-purpose apparatus according to claim 1 or 2, it is characterised in that: the bed mooring
The back side of plate (23) is provided with handle groove (231), and knob (232) is articulated in handle groove (231).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910373606.2A CN110123052B (en) | 2019-05-07 | 2019-05-07 | Telescopic folding bed-chair dual-purpose device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910373606.2A CN110123052B (en) | 2019-05-07 | 2019-05-07 | Telescopic folding bed-chair dual-purpose device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110123052A true CN110123052A (en) | 2019-08-16 |
| CN110123052B CN110123052B (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910373606.2A Active CN110123052B (en) | 2019-05-07 | 2019-05-07 | Telescopic folding bed-chair dual-purpose device |
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| Country | Link |
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| CN (1) | CN110123052B (en) |
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| CN113143565A (en) * | 2021-04-26 | 2021-07-23 | 长江大学 | Telescopic orthopedic traction frame |
| CN113983294A (en) * | 2021-10-28 | 2022-01-28 | 西安热工研究院有限公司 | Offshore wind turbine generator system debugging quality supervision system |
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