CN213308513U - Light seat frame and seat with stable structure - Google Patents
Light seat frame and seat with stable structure Download PDFInfo
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- CN213308513U CN213308513U CN202021599872.1U CN202021599872U CN213308513U CN 213308513 U CN213308513 U CN 213308513U CN 202021599872 U CN202021599872 U CN 202021599872U CN 213308513 U CN213308513 U CN 213308513U
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Abstract
The invention relates to a portable seat frame with a stable structure and a seat, comprising a base frame, a lifting assembly, a telescopic connecting rod assembly and a driving assembly, wherein the lifting assembly is arranged on the base frame; the telescopic connecting rod assembly is connected with a foot connecting piece and a backrest connecting piece; the driving component is used for driving the lifting component to lift; the lifting assembly comprises a lifting connecting plate, a first lifting connecting rod, a second lifting connecting rod and a supporting seat, the supporting seat is fixedly connected with the base frame, one ends of the first lifting connecting rod and the second lifting connecting rod are respectively and rotatably connected with the supporting seat, and the other ends of the first lifting connecting rod and the second lifting connecting rod are respectively and rotatably connected with the lifting connecting plate; the original complex frame structure is replaced by the lifting connecting plate, so that the weight of the original seat frame is reduced, the assembly error is reduced, and the whole structure is stable and reliable.
Description
Technical Field
The invention relates to the field of furniture, in particular to a portable seat frame with a stable structure and a seat.
Background
With the development of science and technology and the increasing improvement of the living standard of people, the requirement of people on the versatility of the seat unit is higher and higher. The function of the chair for the old is mainly used for helping the old with inconvenient legs and feet and poor waist strength to stand up from the sofa, thereby facilitating the activities of the old.
In the prior art, the geriatric chair adopts the installation of an integral frame, for example, application number 201510965955.5 discloses a geriatric chair mechanical device, a first limit bushing is arranged on a seat frame installation plate of the geriatric chair, a second limit bushing is arranged on an armrest installation plate of the geriatric chair, a third limit bushing is arranged on a backrest conversion connection piece, a third lifting connection piece is provided with a first phase tangent plane, a second phase tangent plane is arranged on the first lifting connection piece, a fourth phase tangent plane is arranged on a rear installation piece, a third phase tangent plane and a fifth phase tangent plane are arranged on the second lifting connection piece, a sixth phase tangent plane is arranged on a welding connection piece, the first limit bushing is matched with the first phase tangent plane, the second limit bushing is matched with the first phase tangent plane and the second phase tangent plane, and the third limit bushing is matched with the fourth phase tangent plane. The left and right side parts are directly assembled with the lifting base, so that the safety and the comfort are improved.
However, in order to stabilize the structure of the old people chair in the prior art, the whole frame adopted by the lifting mechanism of the old people chair needs to be welded, so that the assembly error is large, the structure is heavy, and the lifting process needs to be realized by providing large driving force.
Accordingly, it is desirable to provide a lightweight seat frame and seat having a stable structure to solve the above problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides a light seat frame with a stable structure and a seat.
The technical effects of the invention are realized as follows:
the invention provides a portable seat frame with a stable structure, which comprises a base frame, a lifting assembly and a driving assembly, wherein the base frame is provided with a base frame; the telescopic connecting rod assembly is connected with a foot connecting piece and a backrest connecting piece; the driving component is used for driving the lifting component to lift;
the lifting assembly comprises a lifting connecting plate, a first lifting connecting rod, a second lifting connecting rod and a supporting seat, the supporting seat is fixedly connected with the base frame, one ends of the first lifting connecting rod and the second lifting connecting rod are respectively and rotatably connected with the supporting seat, and the other ends of the first lifting connecting rod and the second lifting connecting rod are respectively and rotatably connected with the lifting connecting plate;
the telescopic connecting rod assembly comprises a foot connecting rod assembly, a back connecting rod assembly and a middle connecting rod assembly, one end of a first middle connecting rod of the middle connecting rod assembly is rotatably connected with the backrest connecting piece, one end of the first middle connecting rod is rotatably connected with the foot connecting rod assembly, the back connecting rod assembly comprises a first backrest connecting rod, one end of the first backrest connecting rod is rotatably connected with the backrest connecting piece, and the other end of the first backrest connecting rod is rotatably connected onto the lifting connecting plate.
Furthermore, the two groups of lifting assemblies are symmetrically arranged along the central plane of the base frame; and a second stabilizing connecting rod is connected between the two lifting connecting plates, and the upper end of the supporting seat is used for limiting the lowest descending position of the second stabilizing connecting rod.
Further, the first lifting connecting rod is located below the second lifting connecting rod, a first stabilizing connecting rod is arranged between the two first lifting connecting rods, the two supporting seats are arranged on the outer side surface of a longitudinal bottom frame of the base frame, the first lifting connecting rod is arranged on the outer side surface of the supporting seat, and the longitudinal bottom frame is used for limiting the lowest descending position of the first stabilizing connecting rod.
Furthermore, the lifting connecting plate is of an integral plate-shaped structure, and the driving assembly is riveted with the lifting connecting plate.
Further, the other ends of the first lifting connecting rod and the second lifting connecting rod are respectively in rotating riveting with the lifting connecting plate.
The folding chair further comprises a telescopic connecting rod assembly, wherein the telescopic connecting rod assembly is connected with a foot connecting piece and a backrest connecting piece; the driving assembly is used for driving the telescopic connecting rod assembly to change the relative positions of the foot connecting piece and the backrest connecting piece, and the lifting connecting plate is connected with the driving assembly and the telescopic connecting rod assembly.
Furthermore, the driving assembly comprises a driving rod, a push rod connecting piece, a lifting connecting piece and a telescopic driving connecting rod assembly; the lifting connecting plate is connected with the lifting connecting plate, and the two ends of the driving rod are also connected with the telescopic connecting rod assembly.
Furthermore, the lifting connecting plate is of an integral plate-shaped structure, and the driving assembly and the telescopic connecting rod assembly are riveted with the lifting connecting plate.
Furthermore, both ends of the driving rod are provided with driving rod riveting sheets, the driving rod riveting sheets are riveted with the lifting connecting sheets, and the telescopic driving connecting rod assembly is connected with the lifting connecting sheets.
In addition, the application also provides a seat, which comprises a backrest supporting part, a foot supporting part, a seat part and the light seat frame with the stable structure.
As described above, the present invention has the following advantageous effects:
(1) the original complex frame structure is replaced by the lifting connecting plate, so that the weight of the original seat frame is reduced, the assembly error is reduced, and the whole structure is stable and reliable;
(2) meanwhile, the first stabilizing connecting rod not only increases the stability of the first lifting connecting rod, so that the two first lifting connecting rods cannot shake relatively in the movement process, the strength is higher, but also plays roles of limiting and supporting at the same time, the descending lowest position of the lifting connecting rod is limited, the second stabilizing connecting rod not only plays a role of enhancing the stability of the two lifting connecting plates, but also can further ensure the limiting of the descending lowest point, and the first stabilizing connecting rod plays a role of double insurance;
(3) each part connected with the lifting connecting plate is riveted, so that the positioning is more accurate, the installation error is smaller, and the overall structure is more accurate in matching.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art it is also possible to derive other drawings from these drawings without inventive effort.
FIG. 1 is a schematic structural diagram of a part of a seat frame in a standing position according to an embodiment of the present invention;
fig. 2 is a schematic structural view of the lifting assembly in the sitting posture state according to the embodiment of the present invention;
fig. 3 is a schematic structural view of the lifting assembly in the standing position state according to the embodiment of the present invention;
fig. 4 is a front view of the lifting connection plate in the embodiment of the present invention;
FIG. 5 is a schematic view of the sitting position of the seat frame according to the embodiment of the present invention;
FIG. 6 is a schematic view of a portion of the seat frame in a sitting position according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a portion of a seat frame in an embodiment of the present invention in a TV posture state;
fig. 8 is a schematic structural view of a part of the seat frame in the lying position according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1:
in the embodiment, the chair for the old people can realize the chair with the changeable posture that the seat part is lifted and inclined forward, so that the convenient standing of the user with inconvenient legs and weak feet is facilitated; comprises a base frame 1, a lifting component 2 and a driving component 3; the telescopic connecting rod component 4 is connected with a foot connecting piece 5 and a backrest connecting piece 6; the driving component 3 is used for driving the lifting component 2 to lift;
the lifting assembly 2 comprises a lifting connecting plate 21, a first lifting connecting rod 22, a second lifting connecting rod 23 and a supporting seat 25, the supporting seat 25 is fixedly connected with the base frame 1, one ends of the first lifting connecting rod 22 and the second lifting connecting rod 23 are respectively rotatably connected with the supporting seat 25, and the other ends of the first lifting connecting rod 22 and the second lifting connecting rod 23 are respectively rotatably connected with the lifting connecting plate 21; the original complex frame structure is replaced by the lifting connecting plate, so that the weight of the original seat frame is reduced, the assembly error is reduced, and the whole structure is stable and reliable; specifically, the lifting process is mainly as follows:
in this embodiment, the sofa frame is lifted and lowered mainly by a driving source, specifically, the driving source for driving the driving assembly to move is the driving motor 7, the push rod connector 32 is rotatably connected to one end of the motor push rod 71 of the driving motor 7, and the casing 72 of the driving motor 7 is rotatably connected to the base frame 1.
The motor push rod 71 respectively corresponds to the sitting posture and the standing posture of the seat according to the third position and the fourth position corresponding to the extension degree of the motor push rod; when the motor push rod 71 is further pushed forwards from the third position to the fourth position, the seat is switched from the sitting position to the standing position, and the specific process at this time is that the motor push rod 71 drives the driving rod 31 to move forwards and upwards through the push rod connecting piece 32, the driving rod 31 drives one end of the lifting connecting plate 21 to move through the lifting connecting piece 33, and the lifting connecting plate 21 is rotationally connected with the first lifting connecting rod 22 and the second lifting connecting rod 23 at the same time, and the first lifting connecting rod 22 and the second lifting connecting rod 23 are rotationally connected with a supporting seat 25 fixed on the base frame 1, thereby the lifting connecting plate 21 rises with a preset radian and drives the telescopic connecting rod component 4 connected on the lifting connecting plate 21 to rise together, the telescopic connecting rod component 4 is in a forward tilting state, the motor push rod 71 reaches a fourth position, thereby forming the final standing position, and being convenient for the old people with weak physical strength and other people to stand up in a labor-saving way.
Specifically, the lifting component 2 is two sets of and sets up along base frame 1's central plane symmetry, and first lifting connecting rod 22 is located second lifting connecting rod below, is equipped with first stable connecting rod 24 between two first lifting connecting rods 22, and first stable connecting rod 24 is used for spacing with base frame 1 cooperation.
When the seat is switched back to the sitting posture from the standing posture, the first lifting connecting rod 22 is in the descending process, the first stabilizing connecting rod 24 does not descend after being collided with the longitudinal bottom frame 11, therefore, the first stabilizing connecting rod 24 not only increases the stability of the first lifting connecting rod 22, so that the first lifting connecting rod 22 can not shake relatively in the moving process, the strength is higher, the limiting and supporting effects are achieved simultaneously, the descending lowest position of the first lifting connecting rod 22 is limited, the seat can be switched between the sitting posture and the TV posture and the lying posture, and the supporting force is stably provided by the structure below.
And furthermore, be connected with second stabilizing connecting rod 35 between two lift connecting plates 21, in this embodiment, the upper end of supporting seat 25 is used for spacing the minimum decline position of second stabilizing connecting rod 35, in other embodiments, also can set up stop gear in addition on the base frame and make it carry out spacing cooperation with second stabilizing connecting rod 35, second stabilizing connecting rod 35 has not only played the effect of strengthening two lift connecting plates 21 stability, can further guarantee to descend spacing of minimum, and first stabilizing connecting rod 24 has played the effect of dual fail-safe.
Specifically, first stable connecting rod 24 both ends and the inboard fixed connection of two first lifting connecting rods 22, for bolt fastening in this embodiment, also can be riveting fastening or other fixed forms, and second stable connecting rod 35 both ends and the inboard fixed connection of two lifting connecting plates 21 are for bolt fastening in this embodiment, also can be riveting fastening or other fixed forms for assembly error is little in the structure, and the space of installation is bigger, effectively realizes accurate spacing.
In addition, the driving assembly 3 includes a driving rod 31, a push rod connector 32 and a lifting connector 33, the push rod connector 32 is disposed in the middle of the driving rod, the push rod connector 32 is used for being connected with a push rod of the driving source, the two ends of the driving rod 31 are respectively connected with the lifting connector 33, and the lifting connector 33 is connected with the lifting connector 21.
The seat frame can change four postures which respectively correspond to the sitting posture, the TV posture, the lying posture and the standing posture of the seat, wherein the sitting posture is the state when the seat is used daily, the leg contraction backrest of the seat is close to the vertical state and is suitable for the daily sitting and rest state of a user, the TV posture is the state when the leg of the seat is extended, correspondingly, the inclination angle of the backrest is unchanged or slightly inclined backwards, the seat frame is suitable for the state when the user is in a relaxed state when watching TV, and the lying posture is that the leg of the seat is further lifted, the backrest is further inclined backwards and then is lowered, and the seat frame is suitable for the user to lie flat and rest.
Specifically, the telescopic link assembly 4 includes a foot link assembly 41, a back link assembly 42, and an intermediate link assembly 43, and the first intermediate link 431 of the intermediate link assembly 43 has one end rotatably connected to the backrest connection member 6 and one end rotatably connected to the foot link assembly 41
The back connecting rod assembly 42 comprises a first backrest connecting rod 421, one end of the first backrest connecting rod 421 is rotatably connected with the backrest connecting piece 6, the other end is rotatably connected with the lifting connecting plate 21,
the foot link assembly 41 comprises a first foot link 411, a second foot link 412, a third foot link 413 and a fourth foot link 414, one end of each of the first foot link 411 and the second foot link 412 is rotatably connected with the foot connecting piece 5, the other end of the first foot link 411 is rotatably connected with one end of the third foot link 413, and the other end of the third foot link 413 is connected with a first intermediate link 431; the other end of the second foot link 412 is rotatably connected to one end of the fourth foot link 414, the other end of the fourth foot link 414 is rotatably connected to one end of a second intermediate link 432 of the intermediate link assembly 43, and the other end of the second intermediate link 432 is rotatably connected to the lifting link plate 21;
the telescopic driving link assembly 34 includes a telescopic driving link 341 and a telescopic driving link 342, wherein the lifting link 33 is rotatably connected to one end of the telescopic driving link 341, the other end of the telescopic driving link 341 is rotatably connected to the telescopic driving link 342, and the telescopic driving link 342 is fixedly connected to the first intermediate link 431, in this embodiment, riveted.
The push rod connecting piece 32 is rotatably connected with one end of a motor push rod 71 of the driving motor 7, and a shell 72 of the driving motor 7 is rotatably connected with the base frame 1. The rotary connection mode of the components can be riveting rotation, and can also be pin shaft, step bolt and the like to realize rotary connection.
The motor push rod 71 can be divided into a first position, a second position, a third position and a fourth position according to the extension degree thereof, and respectively corresponds to four postures of the lying posture, the TV posture, the sitting posture and the standing posture of the seat.
When the motor push rod 71 is located at the third position, namely when the sofa is in a sitting posture, the foot connecting rod assembly 41 is in a contraction state at the moment, the motor push rod 71 is driven to contract, the drive rod 31 is driven to move towards the motor shell through the push rod connecting piece 32, the drive rod 31 drives the telescopic drive connecting rod 341 to rotate through driving the lifting connecting piece 33, so that the telescopic drive connecting piece 342 is further driven to drive the first intermediate connecting rod 431 to move towards the backrest connecting piece, the foot connecting rod assembly 41 is changed from the contraction state to the extension state, and finally the motor push rod 71 moves to the second position, so that the TV posture is adjusted;
when the motor push rod 71 is located at the second position, the motor push rod 71 is further contracted, the foot connecting rod assembly 41 is further lifted at the moment, the backrest connecting piece 6 is driven by the first intermediate connecting rod 431 to tilt backwards, and when the motor push rod 71 finally moves to the first position from the second position, the foot connecting piece 5 is higher than the backrest connecting piece 6 to form a lying posture.
The specific transmission relationship of the process of switching the sofa from the lying posture to the TV posture and the process of switching the TV posture to the sitting posture, namely moving the motor push rod 71 from the first position to the second position and moving the motor push rod 71 from the second position to the third position, is opposite to the process of stretching and opening, and is not described again.
Example 2:
the embodiment provides a seat, in particular to a chair for the elderly, which comprises a backrest support part, a foot support part, a seat part and a light seat frame with a stable structure, and comprises a base frame 1, a lifting assembly 2 and a driving assembly 3; the telescopic connecting rod component 4 is connected with a foot connecting piece 5 and a backrest connecting piece 6; the driving component 3 is used for driving the lifting component 2 to lift;
the lifting assembly 2 comprises a lifting connecting plate 21, a first lifting connecting rod 22, a second lifting connecting rod 23 and a supporting seat 25, the supporting seat 25 is fixedly connected with the base frame 1, one ends of the first lifting connecting rod 22 and the second lifting connecting rod 23 are respectively rotatably connected with the supporting seat 25, and the other ends of the first lifting connecting rod 22 and the second lifting connecting rod 23 are respectively rotatably connected with the lifting connecting plate 21; the original complex frame structure is replaced by the lifting connecting plate, so that the weight of the original seat frame is reduced, the assembly error is reduced, and the whole structure is stable and reliable.
As described above, the present invention has the following advantageous effects:
(1) the original complex frame structure is replaced by the lifting connecting plate, so that the weight of the original seat frame is reduced, the assembly error is reduced, and the whole structure is stable and reliable;
(2) meanwhile, the first stabilizing connecting rod not only increases the stability of the first lifting connecting rod, so that the two first lifting connecting rods cannot shake relatively in the movement process, the strength is higher, but also plays roles of limiting and supporting at the same time, the descending lowest position of the lifting connecting rod is limited, the second stabilizing connecting rod not only plays a role of enhancing the stability of the two lifting connecting plates, but also can further ensure the limiting of the descending lowest point, and the first stabilizing connecting rod plays a role of double insurance;
(3) each part connected with the lifting connecting plate is riveted, so that the positioning is more accurate, the installation error is smaller, and the overall structure is more accurate in matching.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The embodiments and features of the embodiments described herein above can be combined with each other without conflict.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A portable seat frame with a stable structure, characterized in that it comprises a base frame (1), a lifting assembly (2), a telescopic link assembly (4) and a driving assembly (3); the telescopic connecting rod component (4) is connected with a foot connecting piece (5) and a backrest connecting piece (6); the driving component (3) is used for driving the lifting component (2) to lift;
the lifting assembly (2) comprises a lifting connecting plate (21), a first lifting connecting rod (22), a second lifting connecting rod (23) and a supporting seat (25), the supporting seat (25) is fixedly connected with the base frame (1), one ends of the first lifting connecting rod (22) and the second lifting connecting rod (23) are respectively in rotating connection with the supporting seat (25), and the other ends of the first lifting connecting rod (22) and the second lifting connecting rod (23) are respectively in rotating connection with the lifting connecting plate (21);
telescopic link assembly (4) include foot link assembly (41), back link assembly (42) and middle link assembly (43), first middle connecting rod (431) one end of middle link assembly (43) with back connecting piece (6) rotate to be connected, one end with foot link assembly (41) rotate to be connected, back link assembly (42) include first back connecting rod (421), and first back connecting rod (421) one end rotates with back connecting piece (6) to be connected, and the other end rotates to be connected on lift connecting plate (21).
2. Lightweight seat frame with stabilized structure according to claim 1, characterized in that said lifting assemblies (2) are in two groups and are arranged symmetrically along the central plane of said seat frame (1); two be connected with second stabilizing connecting rod (35) between lift connecting plate (21), the upper end of supporting seat (25) is used for spacing the minimum decline position of second stabilizing connecting rod (35).
3. The portable seat frame with stabilized structure according to claim 2, characterized in that the first lifting link (22) is located below the second lifting link, a first stabilizing link (24) is provided between the two first lifting links (22), the two support bases (25) are provided on the outer side of the longitudinal bottom frame (11) of the seat frame (1), the first lifting link (22) is provided on the outer side of the support base (25), and the longitudinal bottom frame (11) is used for limiting the lowest descending position of the first stabilizing link (24).
4. Lightweight seat frame with stabilized structure according to claim 1, characterized in that the lifting connection plate (21) is of one-piece plate-like structure, the driving assembly (3) being riveted to the lifting connection plate (21).
5. The lightweight seat frame with stabilized structure according to claim 1, characterized in that the other ends of the first and second lifting links (22, 23) are respectively rotation-riveted with the lifting link plate (21).
6. Lightweight seat frame with a stabilized structure according to any of claims 1 to 5, characterized in that it further comprises a telescopic link assembly (4), said telescopic link assembly (4) having a foot connection (5) and a backrest connection (6) connected thereto; the driving assembly (3) is used for driving the telescopic connecting rod assembly (4) to change the relative positions of the foot connecting piece (5) and the backrest connecting piece (6), and the lifting connecting plate (21) is connected with the driving assembly (3) and the telescopic connecting rod assembly (4).
7. Lightweight seat frame with stabilized structure according to claim 6, characterized in that said drive assembly (3) comprises a drive rod (31), a push rod connection (32), a lifting link (33) and a telescopic drive link assembly (34); be equipped with push rod connecting piece (32) in the middle of the actuating lever, push rod connecting piece (32) are used for being connected with the push rod of driving source, lift connection piece (33) is connected respectively at actuating lever (31) both ends, lift connection piece (33) with lift connecting plate (21) are connected, actuating lever (31) both ends still with telescopic link subassembly (4) are connected.
8. Lightweight seat frame with stabilized structure according to claim 7, characterized in that said lifting connection plate (21) is of a one-piece plate-like structure, said driving assembly (3) and said telescopic link assembly (4) being riveted to said lifting connection plate (21).
9. Lightweight seat frame with stabilized structure according to claim 7, characterized in that the driving rod (31) is provided at both ends with driving rod riveting tabs (311), the driving rod riveting tabs (311) are riveted with the lifting connection tab (33), and the telescopic driving link assembly (34) is connected with the lifting connection tab (33).
10. A seat comprising a back support, a foot support, a seat portion and a lightweight seat frame with a stabilising structure according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021599872.1U CN213308513U (en) | 2020-08-05 | 2020-08-05 | Light seat frame and seat with stable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021599872.1U CN213308513U (en) | 2020-08-05 | 2020-08-05 | Light seat frame and seat with stable structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213308513U true CN213308513U (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021599872.1U Active CN213308513U (en) | 2020-08-05 | 2020-08-05 | Light seat frame and seat with stable structure |
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| Country | Link |
|---|---|
| CN (1) | CN213308513U (en) |
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2020
- 2020-08-05 CN CN202021599872.1U patent/CN213308513U/en active Active
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Address after: 215200 west side of Tongjin Avenue, Wujiang Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee after: Ruimai Technology Co.,Ltd. Address before: 215200 west side of Tongjin Avenue, Wujiang Economic Development Zone, Suzhou City, Jiangsu Province Patentee before: REMACRO MACHINERY & TECHNOLOGY (WUJIANG) Co.,Ltd. |
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