CN113576191B - Dual-motor split control type high-bearing zero-gravity iron frame for old people chair - Google Patents
Dual-motor split control type high-bearing zero-gravity iron frame for old people chair Download PDFInfo
- Publication number
- CN113576191B CN113576191B CN202111086596.8A CN202111086596A CN113576191B CN 113576191 B CN113576191 B CN 113576191B CN 202111086596 A CN202111086596 A CN 202111086596A CN 113576191 B CN113576191 B CN 113576191B
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- Prior art keywords
- connecting rod
- plate
- pivoted
- lifting
- seat
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 18
- 230000008093 supporting effect Effects 0.000 claims abstract description 11
- 230000005484 gravity Effects 0.000 description 5
- 230000036544 posture Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
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
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
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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
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/02—Seat parts
- A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
- A47C7/144—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions with array of movable supports
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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
- 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
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
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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
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention discloses a double-motor split-control type high-bearing zero-gravity old people chair iron frame, which comprises a lifting plate, a seat frame, a leg rest connecting rod group, a seat lifting connecting rod group, a first push rod motor and a second push rod motor, wherein the lifting plate is arranged on the seat frame; the seat frame comprises a seat plate, a leg rest assembly and a backrest assembly; the leg rest connecting rod group comprises a driving plate, a first connecting rod, a second connecting rod and a third connecting rod; the driving plate is pivoted with the lifting plate, the first connecting rod is pivoted with the driving plate, the second connecting rod is pivoted with the first connecting rod, the second connecting rod is pivoted with the leg rest assembly, and the third connecting rod is pivoted on the second connecting rod and the seat plate; the seat lifting link group comprises a fourth link and a fifth link; the fourth connecting rod is pivoted with the front ends of the driving plate and the fifth connecting rod, the rear end of the fifth connecting rod is pivoted with the seat plate, and the seat plate is provided with a supporting piece for the fifth connecting rod to prop against; the first push rod motor is connected with the driving plate, and the second push rod motor is connected with the backrest component. The invention can remarkably improve the convenience and comfort of the user.
Description
Technical Field
The invention relates to the field of seats, in particular to a double-motor split control type high-bearing zero-gravity iron frame of an old man chair.
Background
The seat is a household tool which is frequently used by people and can be used for rest of people. For the elderly with inconvenient movement and weak muscles, the elderly can not sit on the seat easily to get up because of the inconvenient movement, so that an elderly chair capable of assisting the elderly to stand up is available on the market.
In the prior art, the old man chair only has the function of assisting the old man to stand, and does not have the function of stretching and shrinking for improving the sitting comfort, so that the experience of a user in sitting is more general, and the old man chair in the prior art has room for improvement.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the double-motor split control type high-bearing zero-gravity old people chair iron frame, which can remarkably improve the convenience and the comfort of the use of a user.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a dual-motor split control type high-bearing zero-gravity old people chair iron frame is characterized in that: the seat lifting device comprises a lifting plate, a seat frame, a leg rest connecting rod group, a seat lifting connecting rod group, a first push rod motor and a second push rod motor;
the seat frame comprises a seat plate, a leg rest assembly arranged at the front end of the seat plate and a backrest assembly arranged at the rear end of the seat plate;
The leg rest connecting rod group comprises a driving plate, a first connecting rod, a second connecting rod and a third connecting rod; the middle part of the driving plate is pivoted with the front end part of the lifting plate, the front end of the first connecting rod is pivoted with the lower end of the driving plate, the rear end of the second connecting rod is pivoted with the rear end of the first connecting rod, the front end of the second connecting rod is pivoted on one connecting rod in the leg rest assembly, the lower end of the third connecting rod is pivoted on the second connecting rod, and the upper end of the third connecting rod is pivoted on the seat plate;
the seat lifting link set comprises a fourth link and a fifth link; the lower end of the fourth connecting rod is pivoted on the driving plate, the upper end of the fourth connecting rod is pivoted with the front end of the fifth connecting rod, the rear end of the fifth connecting rod is pivoted on the seat plate, and the seat plate is provided with a supporting piece for the fifth connecting rod to abut against after the front end of the fifth connecting rod rotates upwards;
the first push rod motor is connected with the driving plate and drives the lifting plate to lift upwards or drives the driving plate to rotate relative to the lifting plate so as to link the expansion of the leg rest assembly and the lifting of the front end of the seat plate;
The second push rod motor is connected with the backrest component to drive the backrest component to swing back and forth.
Preferably, the backrest assembly comprises a backrest plate and a support plate;
The rear end of the seat plate is provided with an upward extending connecting part, and the lower front end of the backboard is pivoted with the upper end of the connecting part;
the support plate is fixed at the lower rear end position of the backboard and is connected with the second push rod motor so as to drive the backboard to rotate relative to the connecting part.
Preferably, the seat lifting connecting rod group further comprises a linkage rod, wherein the front end of the linkage rod is pivoted with the rear end of the fifth connecting rod, and the rear end of the linkage rod is pivoted with the upper front end part of the supporting plate.
Preferably, the seat lifting connecting rod group further comprises a linkage rod, wherein the front end of the linkage rod is pivoted with the rear end of the fifth connecting rod, and the rear end of the linkage rod is pivoted with the upper front end part of the supporting plate.
Preferably, the lifting device further comprises a bottom frame, an upper lifting rod and a lower lifting rod;
the underframe is provided with a vertical mounting plate, and the mounting plate is provided with a first pivoting position and a second pivoting position which are distributed up and down;
the rear end of the upper lifting rod and the rear end of the lower lifting rod are respectively pivoted on the first pivoting position and the second pivoting position;
The front end of the lifting plate is provided with a connecting support part which is bent downwards and can be supported on the underframe, and the connecting support part is provided with a third pivot joint position and a fourth pivot joint position which are distributed up and down and pivot-joint the front end of the upper lifting rod and the front end of the lower lifting rod;
the motor end of the first push rod motor is pivoted on the underframe, and the push rod end of the first push rod motor is pivoted with a first motor tube and is connected with the driving plate through the first motor tube.
The invention has the advantages that: on the basis of having a lifting function so as to be convenient for the old, the seat frame can drive the front end position of the seat plate to be lifted and the leg rest assembly to be unfolded through the first push rod motor so as to achieve a leisure sitting posture state; through the second push rod motor, the backrest component can be driven to lean backwards and the front end position of the seat plate is further lifted, and the zero gravity lying state is achieved.
Drawings
Fig. 1 is a schematic view of an iron stand in a lying state with zero gravity according to the present embodiment;
FIG. 2 is a schematic view of a part of an iron stand according to the present embodiment;
FIG. 3 is a schematic view of a part of an iron stand according to the present embodiment;
FIG. 4 is a schematic view of the iron stand provided in this embodiment with the leg rest assembly fully open;
FIG. 5 is a schematic view of the iron stand provided in the present embodiment in a zero gravity lying position;
FIG. 6 is a schematic view of the iron stand provided in the present embodiment in a fully folded state;
fig. 7 is a schematic view of the iron stand provided in the present embodiment in a lifted state.
Detailed Description
The invention relates to a double-motor split control type high-bearing zero-gravity old people chair iron frame, which is further described with reference to fig. 1-7.
A dual-motor split control type high-bearing zero-gravity old people chair iron frame is characterized in that: comprises a bottom frame 1, a lifting plate 6, a seat frame 2, a leg rest connecting rod group 5, a seat lifting connecting rod group 3, a first push rod motor 4 and a second push rod motor 8.
As shown in fig. 1,2 and 5, the underframe 1 is provided with two vertical and symmetrical mounting plates 11, and an upper lifting rod 13 and a lower lifting rod 12 which are distributed up and down are pivoted on the mounting plates 11. Namely, the mounting plate 11 is provided with a first pivot position and a second pivot position which are distributed up and down, and the rear end of the upper lifting rod 13 and the rear end of the lower lifting rod 12 are respectively pivoted on the first pivot position and the second pivot position. The front end position of the lifting plate 6 is provided with a connecting support part 62 which is bent downwards and can be supported on the underframe 1, and the connecting support part 62 is provided with a third pivot joint position and a fourth pivot joint position which are distributed up and down and pivot joint the front end of the upper lifting rod 13 and the front end of the lower lifting rod 12. The first to fourth pivot positions are pivot holes.
As shown in fig. 1 and 4, the seat frame 2 includes a seat plate 22, a leg rest assembly 21 provided at a front end of the seat plate 22, and a backrest assembly 23 provided at a rear end of the seat plate 22. A first pivot plate 71 and a second pivot plate 72 are fixed to the rear end portion of the seat plate 22 and the rear end portion of the lift plate 6 by bolts, respectively, and the lower ends of the first pivot plate 71 and the second pivot plate 72 are pivoted. Whereby the front end of the seat plate 22 can be rotated with respect to the lift plate 6 and is structurally stable.
As shown in fig. 1,2, and 3, the leg rest linkage 5 includes a drive plate 50, a first link 51, a second link 52, and a third link 53. The middle part 502 of the driving plate 50 is pivoted to the front end part of the lifting plate 6, the front end of the first connecting rod 51 is pivoted to the lower end 501 of the driving plate 50, the rear end of the second connecting rod 52 is pivoted to the rear end of the first connecting rod 51, the front end of the second connecting rod 52 is pivoted to the connecting rod 211 in the leg rest assembly 21, the lower end of the third connecting rod 53 is pivoted to the second connecting rod 52, and the upper end is pivoted to the seat plate 22.
The seat lift linkage 3 includes a fourth link 31 and a fifth link 32. The lower end of the fourth link 31 is pivotally connected to the driving plate 50, the upper end is pivotally connected to the front end of the fifth link 32, the rear end of the fifth link 32 is pivotally connected to the seat plate 22, and the seat plate 22 has a supporting member 221 against which the fifth link 32 abuts after the front end rotates upward. Specifically, the support 221 is a positioning sleeve fixed to the side of the seat plate 22 by a pin, and the positioning sleeve is located at a position of the seat plate 22 near the front end. The fifth link 32 has a protrusion 321 protruding forward at a front end position, and the protrusion 321 has a stepped surface for supporting the positioning sleeve.
The motor end of the first push rod motor 4 is connected to the rear end position of the chassis 1 through a U-shaped pivot seat, the push rod end of the first push rod motor 4 is connected with a first motor tube 41 through a U-shaped pivot seat, and is connected and fixed with the driving plate 50 through the first motor tube 41, and the first push rod motor 4 can drive the lifting plate 6 to lift upwards or drive the driving plate 50 to rotate relative to the lifting plate 6 to link the extension and retraction of the leg rest assembly 21 and the lifting of the front end of the seat plate 22.
As shown in fig. 1,5 and 6, the second push rod motor 8 is connected to the backrest module 23 to drive the backrest module 23 to swing back and forth. Namely, a second motor tube 82 is pivoted on the motor end of the second push rod motor 8 through a U-shaped pivot seat, and two ends of the second motor tube 82 are respectively fixed on the connecting support part 62; the push rod end of the second push rod motor 8 is connected with a third motor tube 81 through a U-shaped pivot seat, and two ends of the third motor tube 81 are respectively fixed on the backrest component 23.
Specifically, the backrest assembly 23 includes a backrest plate 231 and a support plate 232. The seat plate 22 has a connecting portion 222 extending upward at a rear end thereof, and the lower front end of the backboard 231 is pivotally connected to an upper end of the connecting portion 222; the support plate 232 is fixed at the lower rear end of the back plate 231 by a plurality of screws, and is fixed by the third motor tube 81 on the second push rod motor 8, so as to drive the back plate 231 to rotate relative to the connection portion 222, so as to adjust the back angle.
The seat lifting link set 3 further includes a link lever 33, where the front end of the link lever 33 is pivoted to the rear end of the fifth link lever 32, and the pivot position of the link lever 33 and the fifth link lever 32 is higher than the pivot position of the fifth link lever 32 and the seat plate 22. The rear end of the linkage rod 33 is pivotally connected to the upper front end portion of the support plate 232. By this link 33, the front end position of the seat plate 22 can be further lifted, and the comfort of lying can be improved.
The front end portion of the seat plate 22 is provided with an arc-shaped guide groove 61, and the driving plate 50 is provided with a guide pin 9 which is in guide fit with the arc-shaped guide groove 61 and penetrates through the arc-shaped guide groove to be connected with the lower end of the fourth connecting rod 31. The driving plate 50 and the fourth link 31 are respectively located at the inner and outer sides of the lifting plate 6.
When the invention is specifically used, as shown in fig. 6, the embodiment is in a fully folded state, in this state, the connection support part 62 at the front end of the lifting plate 6 is supported on the underframe 1, the support tube 10 connected to the rear end of the lifting plate 6 is supported on the top of the mounting plate 11, and is used for the user to sit down normally, and the structure is stable;
When the user is the elderly or the patient, the auxiliary standing of the present invention is required due to the inconvenience of movement, the first push rod motor 4 is started on the basis of the normal sitting to elongate the first push rod motor 4, and since the guide pin 9 is positioned at the forefront position of the arc-shaped guide groove 61 during the normal sitting, the upper end of the driving plate 50 cannot continue to rotate forward, so that the lifting plate 6 is lifted upward with the auxiliary support of the upper lifting rod 13 and the lower lifting rod 12 together with the seat frame 2 as the first push rod motor 4 is elongate, the front ends of the upper lifting rod 13 and the lower lifting rod 12 are rotated upward at the same time, and the rear end of the seat plate 22 is gradually higher than the front end of the seat plate 22. With the upward lifting of the lifting plate 6, the second motor tube 82 and the upper lifting rod 13 come closer gradually until they abut against each other, and the lifting plate cannot be lifted continuously, while the lifting frame reaches the equilibrium position as shown in fig. 7, in which state the convenience of standing by the user can be improved.
When the sitting posture is adjusted to other sitting postures, on the basis of the normal sitting postures, namely the fully folded state, the first push rod motor 4 is started, so that the first push rod motor 4 is contracted, the upper end of the driving plate 50 is driven to rotate backwards and upwards, namely the driving plate 50 is driven to rotate clockwise, the lower end of the driving plate 50 is driven to rotate forwards to pull the first connecting rod 51 to swing forwards, meanwhile, the second connecting rod 52 is driven to swing forwards, and after the second connecting rod 52 swings forwards, the connecting rod 211 connected with the second connecting rod 52 in the leg rest assembly 21 can be driven to swing forwards, so that the leg rest assembly 21 is unfolded, and the legs of a user can be put. While the driving plate 50 rotates clockwise, the fourth link 31 connected to the guide pin 9 rises accordingly, driving the front end of the fifth link 32 to rotate upward, and the fifth link 32 is supported on the supporting member 221, driving the front end position of the seat plate 22 to rise relative to the rear end position, achieving a slight zero gravity effect, i.e., the leg fully open state as shown in fig. 4.
When the gravity needs to be further adjusted slightly zero, the second push rod motor 8 is started, the second push rod motor 8 contracts, the backboard 231 and the support plate 232 are driven to synchronously rotate clockwise, the inclination angle of the backboard 231 is larger, and the lying state is realized; after the support plate 232 rotates clockwise, the pivot point of the support plate 232 and the linkage rod 33 moves forward, so that the linkage rod 33 is driven to move forward, the linkage rod 33 pushes the fifth connecting rod 32 to rotate anticlockwise, and the fifth connecting rod 32 drives the front end of the seat plate 22 to further lift under the supporting action of the fourth connecting rod 31, so that a complete zero-gravity lying state is realized.
In each switching step, the state can be restored to the previous state only by reverse driving.
Since the leg rest assembly 21 is a related art, the present embodiment will not be described in detail with respect to the leg rest assembly 21.
Unless specifically stated otherwise, in the present invention, if there are terms such as "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the positional or positional relationship indicated on the drawings are merely for convenience of describing the present invention and simplifying the description, and not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, the terms describing the positional or positional relationship in the present invention are merely for exemplary illustration and not to be construed as limitations of the present patent, and it is possible for those skilled in the art to combine the drawings and understand the specific meaning of the above terms according to circumstances.
Unless specifically stated or limited otherwise, the terms "disposed," "connected," and "connected" herein are to be construed broadly, e.g., they may be fixed, removable, or integral; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill 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 examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (3)
1. A dual-motor split control type high-bearing zero-gravity old people chair iron frame is characterized in that: the seat lifting device comprises a lifting plate, a seat frame, a leg rest connecting rod group, a seat lifting connecting rod group, a first push rod motor and a second push rod motor;
the seat frame comprises a seat plate, a leg rest assembly arranged at the front end of the seat plate and a backrest assembly arranged at the rear end of the seat plate;
The leg rest connecting rod group comprises a driving plate, a first connecting rod, a second connecting rod and a third connecting rod; the middle part of the driving plate is pivoted with the front end part of the lifting plate, the front end of the first connecting rod is pivoted with the lower end of the driving plate, the rear end of the second connecting rod is pivoted with the rear end of the first connecting rod, the front end of the second connecting rod is pivoted on one connecting rod in the leg rest assembly, the lower end of the third connecting rod is pivoted on the second connecting rod, and the upper end of the third connecting rod is pivoted on the seat plate;
the seat lifting link set comprises a fourth link and a fifth link; the lower end of the fourth connecting rod is pivoted on the driving plate, the upper end of the fourth connecting rod is pivoted with the front end of the fifth connecting rod, the rear end of the fifth connecting rod is pivoted on the seat plate, and the seat plate is provided with a supporting piece for the fifth connecting rod to abut against after the front end of the fifth connecting rod rotates upwards;
the first push rod motor is connected with the driving plate and drives the lifting plate to lift upwards or drives the driving plate to rotate relative to the lifting plate so as to link the expansion of the leg rest assembly and the lifting of the front end of the seat plate;
the second push rod motor is connected with the backrest assembly to drive the backrest assembly to swing back and forth;
The backrest assembly comprises a backrest plate and a supporting plate;
The rear end of the seat plate is provided with an upward extending connecting part, and the lower front end of the backboard is pivoted with the upper end of the connecting part;
The support plate is fixed at the lower rear end of the backboard and is connected with the second push rod motor so as to drive the backboard to rotate relative to the connecting part;
The lifting device also comprises a bottom frame, an upper lifting rod and a lower lifting rod;
the underframe is provided with a vertical mounting plate, and the mounting plate is provided with a first pivoting position and a second pivoting position which are distributed up and down;
the rear end of the upper lifting rod and the rear end of the lower lifting rod are respectively pivoted on the first pivoting position and the second pivoting position;
The front end of the lifting plate is provided with a connecting support part which is bent downwards and can be supported on the underframe, and the connecting support part is provided with a third pivot joint position and a fourth pivot joint position which are distributed up and down and pivot-joint the front end of the upper lifting rod and the front end of the lower lifting rod;
the motor end of the first push rod motor is pivoted on the underframe, and the push rod end of the first push rod motor is pivoted with a first motor tube and is connected with the driving plate through the first motor tube.
2. The dual-motor split control type high-load-capacity zero-gravity old people chair iron frame is characterized in that: the seat lifting connecting rod group also comprises a linkage rod, wherein the front end of the linkage rod is pivoted with the rear end of the fifth connecting rod, and the rear end of the linkage rod is pivoted with the upper front end part of the supporting plate.
3. The dual-motor split control type high-load-capacity zero-gravity old people chair iron frame is characterized in that: the front end of the seat plate is provided with an arc-shaped guide groove, and the driving plate is provided with a guide pin which is in guide fit with the arc-shaped guide groove and is used for connecting the lower end of the fourth connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111086596.8A CN113576191B (en) | 2021-09-16 | 2021-09-16 | Dual-motor split control type high-bearing zero-gravity iron frame for old people chair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111086596.8A CN113576191B (en) | 2021-09-16 | 2021-09-16 | Dual-motor split control type high-bearing zero-gravity iron frame for old people chair |
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| Publication Number | Publication Date |
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| CN113576191A CN113576191A (en) | 2021-11-02 |
| CN113576191B true CN113576191B (en) | 2024-09-10 |
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| CN202111086596.8A Active CN113576191B (en) | 2021-09-16 | 2021-09-16 | Dual-motor split control type high-bearing zero-gravity iron frame for old people chair |
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|---|---|---|---|---|
| CN216364384U (en) * | 2021-11-30 | 2022-04-26 | 德沃康科技集团有限公司 | Zero-gravity experience seat frame with lifting legs |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215913886U (en) * | 2021-09-16 | 2022-03-01 | 礼恩派(嘉兴)有限公司 | Double-motor separate control type high-bearing zero-gravity iron frame of old people chair |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107157163B (en) * | 2017-06-19 | 2023-08-04 | 海宁美惠机械有限公司 | Double-motor liftable old man chair |
| CN108158260B (en) * | 2017-09-05 | 2024-04-12 | 安吉永艺尚品家具有限公司 | Mechanical stretching device and seat unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN215913886U (en) * | 2021-09-16 | 2022-03-01 | 礼恩派(嘉兴)有限公司 | Double-motor separate control type high-bearing zero-gravity iron frame of old people chair |
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