CN210696746U - Sitting posture adjusting device for low-seat unit - Google Patents
Sitting posture adjusting device for low-seat unit Download PDFInfo
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- CN210696746U CN210696746U CN201920415483.XU CN201920415483U CN210696746U CN 210696746 U CN210696746 U CN 210696746U CN 201920415483 U CN201920415483 U CN 201920415483U CN 210696746 U CN210696746 U CN 210696746U
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Abstract
The utility model relates to a sitting posture adjusting device for a low-seat seating unit, which comprises a rear mounting bracket, a seat plate and a foot-rest bracket; the rear mounting bracket is used for adjusting the posture of a backrest of the low-seat unit, the seat plate is arranged between the rear mounting bracket and the leg rest bracket and is used for adjusting the posture of a seat part of the low-seat unit, and the leg rest bracket is used for adjusting the posture of a foot placing part of the low-seat unit; the sitting posture adjusting device further comprises a transmission connecting mechanism, the transmission connecting mechanism is used for right transmission connection between the rear mounting support and the seat plate and among the leg rest supports, through the design of the transmission connecting mechanism, a connecting rod of the transmission connecting mechanism can not rub the base or the ground when the low-seat unit is switched in the posture, the leg rest supports are also high enough when being away from the ground in the contraction state, and the technical problem that the lower low-seat unit is easy to rub and damage is solved.
Description
Technical Field
The utility model relates to a seating unit field especially relates to a position of sitting adjusting device for low seat seating unit.
Background
The seating unit is widely visible in daily life and is applied in a variety of settings, such as sofas, lounges, seats in theaters, seats in traffic, etc. common in furniture. With the development of science and technology and the increasing improvement of the living standard of people, the requirement of people on the comfort of the seat unit is higher and higher. While prior art adjustable low-seat seating units are widely used, typical low-seat seating units can be adjusted to include sitting, extended, and recumbent positions. Wherein the sitting position is a standard stowed position with the seat in its most original position for normal use by a person sitting in daily life, with the seat portion in a generally horizontal orientation and the backrest arranged to be substantially upright; the extended position, commonly referred to as the TV position, extends the footrest forward of the seat portion while the backrest remains upright enough to allow an occupant of the low-seat seating unit to comfortably view television. And a reclined position (or lying position) in which the backrest is positioned rearwardly from the extended position at an obtuse angle to the seat for rest or sleep.
The sitting posture adjusting device for adjusting the three postures comprises a rear mounting bracket, a seat plate and a leg rest bracket; the rear mounting bracket is used for adjusting the posture of the backrest, the seat plate is arranged between the rear mounting bracket and the leg rest bracket and used for adjusting the posture of the seat part, and the leg rest bracket is used for adjusting the posture of the feet in an opposite mode.
Among the adjustable seating units, there are some seating units with a relatively low seat, such as low-height swing chairs and the like, which are designed to be lower than the swing seats of the prior art, and which can accommodate more sofa styles and improve comfort, however, when designing such a swing chair with a lower seat, the following drawbacks are liable to exist: when the contraction posture is adjusted to be the lying posture or the lying posture is adjusted to be the contraction posture, the foot placing part needs to be extended and opened or retracted by an arc angle. And the radius of rotation for opening is typically dependent on the length of the link between the seat pan and the leg rest. The traditional connecting rod design cannot meet the requirement of a human body for supporting feet in an extending posture if the design is too short, the foot placing part is easy to rub the ground or a base because the seat of the low-seat high-swing chair is low if the design is too long, and the foot placing part is easy to collide with the ground if the seat needs to swing in a contraction state. Therefore, the market is in urgent need to provide a sitting posture adjusting device of a seat unit, so that on the premise of meeting the requirement of the length of a leg rest of a customer, the foot placing part is high enough, and parts are not easy to collide in the contraction process.
Disclosure of Invention
In order to solve the technical problem, the utility model provides an as unit adjustment mechanism, position of sitting adjusting device includes transmission coupling mechanism, and transmission coupling mechanism is used for carrying out the transmission between back installing support, seat board and the bracket and connects, through the design to transmission coupling mechanism for low seat unit is when switching the gesture, and transmission coupling mechanism's connecting rod can not bump and wipe base or ground, has solved the technical problem that lower low seat unit bumped and wiped the damage easily.
The technical effects of the utility model are through following realization:
the low seat unit includes a backrest, a seat, and a footrest including the backrest, the seat, and the footrest.
The utility model provides a position of sitting adjusting device for low seat seating unit, it is adjustable to shrink, extend the appearance and the appearance of lying with low seat seating unit. Wherein it is characterized in that; the sitting posture adjusting device comprises a rear mounting bracket, a seat plate and a leg rest bracket; the rear mounting bracket is used for adjusting the posture of the backrest, the seat plate is arranged between the rear mounting bracket and the leg rest bracket and is used for adjusting the posture of the seat part, and the leg rest bracket is used for adjusting the posture of the foot placing part;
the sitting posture adjusting device also comprises a transmission connecting mechanism, and the transmission connecting mechanism is used for connecting the rear mounting bracket, the seat plate and the leg rest bracket in a transmission way; the transmission connecting mechanism comprises a first seat plate connecting rod, a second seat plate connecting rod, a first leg rest support connecting rod and a second leg rest support connecting rod; one end of the first seat plate connecting rod and one end of the second seat plate connecting rod are respectively hinged with the seat plate, and one end of the first footrest bracket connecting rod and one end of the second footrest bracket connecting rod are respectively hinged with the footrest bracket;
the transmission connecting mechanism further comprises at least one middle connecting rod, and the other end of the second seat plate connecting rod and the other end of the second leg rest support connecting rod are respectively connected with the middle connecting rod. Through the arrangement of the middle connecting rod, the length of the connecting rod of the original second seat plate is reduced, so that the rotating radius of the connecting rod of the second seat plate is reduced in the adjusting process, and the risk that the foot rest support collides with the base or the ground is effectively reduced.
In a preferred embodiment, the other end of the first seat plate link is connected to the other end of the first leg rest link. First seat plate connecting rod and first bracket connecting rod keep original connected mode promptly, need not remove the design in addition, only need design the intermediate link between second seat plate connecting rod and the second bracket connecting rod.
In this preferred embodiment, further, the number of the intermediate links is two, and the two intermediate links are a first intermediate link and a second intermediate link, respectively.
Furthermore, the other end of the second seat plate connecting rod is hinged to one end of the first middle connecting rod at a first hinge point, the other end of the first middle connecting rod is hinged to one end of the second middle connecting rod at a second hinge point, and the other end of the second middle connecting rod is hinged to the other end of the second leg rest support connecting rod at a third hinge point.
Further, when the low-seat seating unit is located in the extended position, the first hinge point is higher than the third hinge point, and the first hinge point is not higher than a hinge point of the first leg rest link and the leg rest. The first seat pan link is hinged to the first intermediate link at a fourth hinge point, the fourth hinge point being located between the two ends of the first seat pan link and between the two ends of the first intermediate link; the first leg rest support connecting rod is hinged to the second middle connecting rod at a fifth hinge point, and the fifth hinge point is located between two ends of the first leg rest support connecting rod and between two ends of the second middle connecting rod. The connection relationship and the position relationship between the connecting rods are defined, so that the connecting rods can be folded in sequence when being contracted, and finally, the contracted leg rest support is high enough.
Further, when the low-seat seating unit is in the extended position, a hinge point of the first intermediate link and the second intermediate link, i.e., a first hinge point, is higher than a hinge point of the second intermediate link and the first leg rest link and a second hinge point, and simultaneously, a hinge point of the first intermediate link and the second intermediate link, i.e., a second hinge point, is not higher than a hinge point of the first leg rest link and the leg rest. The position limitation enables the foot placing part to be lifted more than before in the stretching process after the middle connecting rod is added, the problem that the foot placing part is too low is solved, and the highest point of the middle connecting rod cannot exceed the foot placing part to influence the foot placing. The extended position here is the extended position for the low seat unit, when the link between the seat plate and the leg rest is fully extended.
Specifically, when the low-seat seating unit is in the extended position, the height difference between the first hinge point and the third hinge point ranges from 20mm to 60mm, and preferably ranges from 40 mm. And the height difference range of the first hinge point and the hinge point of the first leg rest bracket connecting rod and the leg rest bracket is 10-60mm, preferably 40 mm.
Further, the distance between the first hinge point and the second hinge point at the two ends of the first middle connecting rod is 160-200mm, preferably 180 mm. The distance between the second hinge point and the third hinge point at the two ends of the second intermediate connecting rod is 80-120mm, and preferably 100 mm. In addition, the utility model discloses the turning radius scope of well second seat board connecting rod when connecting the seat board is 90-150mm, and is preferred 120mm for whole adjusting device's accommodation process is stable reasonable more through the settlement to above size range.
Furthermore, in order to limit the adjusting position, the transmission connecting mechanism further comprises a limiting connecting rod and a limiting support, one end of the limiting connecting rod is hinged to the first seat plate connecting rod, the other end of the limiting connecting rod is hinged to the limiting support, and the limiting support is connected with the rear mounting support and/or the seat plate.
In another preferred embodiment, the other end of the first seat plate link and the other end of the first footrest bracket link are also connected to the intermediate link, respectively, so that the length of the first seat plate link is also correspondingly reduced. And specifically, be equipped with two between the other end of second seat board connecting rod and the other end of second bracket support connecting rod middle connecting rod, the other end of first seat board connecting rod with be equipped with two between the other end of first bracket support connecting rod middle connecting rod.
In addition, the utility model discloses still provide a low seat seating unit, low seat seating unit includes back, seat and puts the foot and include as above the position of sitting adjusting device of relevant technical scheme.
Further, the low-seat seating unit further comprises a base, and the sitting posture adjusting device comprises a base assembly, wherein the base assembly is connected with the base.
Further, the sitting posture adjusting device can adjust the low-seat unit to a contraction posture, an extension posture and a lying posture, when the low-seat unit is located in the contraction posture, the foot placing part is located at the lowest point, and the seat plate can swing relative to the base assembly.
In order to increase the swing function in the contraction posture and ensure that the base assembly cannot swing in the extension posture, the base assembly further comprises a limiting pin, the transmission connecting mechanism comprises a limiting connecting piece, a limiting groove matched with the limiting pin is formed in the limiting connecting piece, and when the low-seat unit is located in the contraction posture, the limiting groove is separated from the limiting pin; and when the low-seat unit is positioned in the stretching posture or the lying posture, the limiting groove is jointed with the limiting pin.
Further, the base of the low-seat seating unit may be provided to be rotatable or non-rotatable.
As described above, the utility model discloses following beneficial effect has:
1. through the design of the connecting rods between the multiple seat plates and the leg rest brackets, the leg rest brackets can not rub the ground or the base while the length of the leg rest is ensured, and the feet are high enough to lift off the ground when in a contracted state;
2. by designing the limiting connecting piece, the leg rest bracket can move in a limited range in the movement process, and the rear mounting bracket, the seat plate and the leg rest bracket can synchronously move in a matching way by matching with the limiting bracket;
3. the limiting nails are arranged, so that the seat can swing freely in a contraction state, and can limit the swing in the stretching and lying postures, and the safety of a user is ensured.
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, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view of the seating unit of the present invention in a sitting position;
FIG. 2 is a schematic structural view of the seat unit in the extended position of the present invention;
FIG. 3 is a schematic structural view of the seating unit of the present invention in a lying position;
FIG. 4 is a schematic view of the adjusting mechanism of the low-seat seating unit of the present invention in an extended position;
FIG. 5 is an opposite view of FIG. 4;
FIG. 6 is a schematic structural view of the adjusting mechanism of the low-seat seating unit according to the present invention in a retracted position;
fig. 7 is a schematic structural view of the adjusting mechanism of the low-seat seating unit of the present invention in a lying position;
fig. 8 is a schematic structural view of the adjusting mechanism of the low-seat seating unit of the present invention assembled to the base.
Wherein the reference numerals in the figures correspond to:
1. a backrest; 2. a seat portion; 3. placing a foot part; 11. a rear mounting bracket; 12. a seat plate; 13. A leg rest bracket; 20. a transmission connection mechanism; 21. a first seat pan link; 22. a second seat pan linkage; 23. a first leg rest support link; 24. a second leg rest support link; 25. a first intermediate link; 26. a second intermediate link; 27. a limiting connecting rod; 28, a limit bracket; 29. A limiting connecting piece; 30. a base assembly; 31. a spacing pin; 40. a base.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1:
a low seat unit as shown in fig. 1-3, the low seat unit comprising a backrest 1, a seat 2 and a footrest 3; fig. 1 to fig. 3 correspond to the sitting posture adjusting device which can adjust the sitting posture, the stretching posture and the lying posture respectively. The adjustment of the low-seat seating unit from the sitting posture shown in fig. 1 to the stretching posture shown in fig. 2 is a first adjustment stage, in the first adjustment stage, the angle of the backrest 1 is basically kept unchanged, the foot placing part 3 extends upwards from the lowest point, the adjustment of the low-seat seating unit from the stretching posture shown in fig. 2 to the lying posture shown in fig. 3 is a second adjustment stage, in the second adjustment stage, the angle of the backrest 1 is increased, and the foot placing part 3 continues to be lifted until the adjustment to the final lying posture is finished.
Specifically, the sitting posture adjusting device is shown in fig. 4-7, and includes a rear mounting bracket 11, a seat plate 12, and a leg rest bracket 13; the rear mounting bracket 11 is used for adjusting the posture of the backrest, the seat plate 12 is arranged between the rear mounting bracket 11 and the leg rest bracket and is used for adjusting the posture of the seat part, and the leg rest bracket 13 is used for adjusting the posture of the opposite foot parts;
the sitting posture adjusting device also comprises a transmission connecting mechanism 20, and the transmission connecting mechanism is used for connecting the rear mounting bracket 11, the seat plate 12 and the leg rest bracket 13 in a transmission way; the transmission connection mechanism 20 comprises a first seat plate link 21, a second seat plate link 22, a first footrest bracket link 23 and a second footrest bracket link 24; one end of a first seat plate connecting rod 21 and one end of a second seat plate connecting rod 22 are respectively hinged with the seat plate 12, and one end of a first footrest bracket connecting rod 23 and one end of a second footrest bracket connecting rod 24 are respectively hinged with the footrest bracket;
the drive connection further comprises at least one intermediate link to which the other end of the second seat pan link 22 and the other end of the second footrest support link 24 are connected, respectively. Through the arrangement of the middle connecting rod, the length of the original second seat plate connecting rod 22 is reduced, so that the rotating radius of the second seat plate connecting rod 22 is reduced in the adjusting process, and the risk that the foot rest support collides with the base or the ground is effectively reduced.
The other end of the first seat pan link 21 is connected to the other end of the first footrest bracket link 23. That is, the first seat pan link 21 and the first footrest bracket link 23 maintain the original connection mode, and only the intermediate link between the second seat pan link 22 and the second footrest bracket link 24 needs to be designed without designing a separate design.
The intermediate links have two, a first intermediate link 25 and a second intermediate link 26, respectively.
The other end of the second seat plate link 22 is hinged to one end of the first intermediate link 25 at a first hinge point, the other end of the first intermediate link 25 is hinged to one end of the second intermediate link 26 at a second hinge point, and the other end of the second intermediate link 26 is hinged to the other end of the second leg rest support link 24 at a third hinge point.
The first hinge point is lower than the highest point of the first seat plate connecting rod 21, the second hinge point is higher than the lowest point of the first leg rest connecting rod 23, and the third hinge point is lower than the highest point of the first leg rest. The first seat pan link 21 is hinged to the first intermediate link 25 at a fourth hinge point, which is located between the two ends of the first seat pan link 21 and between the two ends of the first intermediate link 25; first bracket link 23 and second intermediate link 26 are hinged at a fifth hinge point, which is located between the two ends of first bracket link 23 and between the two ends of second intermediate link 26. The connection relationship and the position relationship between the connecting rods are defined, so that the connecting rods can be folded in sequence when being contracted, and finally, the contracted leg rest support is high enough.
When the low seat unit is in the extended position, the hinge point of the first intermediate link 25 and the second intermediate link 26 is higher than the hinge point of the second intermediate link 26 and the first leg rest link 23, and at the same time, the hinge point of the first intermediate link 25 and the second intermediate link 26 is not higher than the hinge point of the first leg rest link 23 and the leg rest support 13. The position limitation enables the foot placing part to be lifted more than before in the stretching process after the middle connecting rod is added, the problem that the foot placing part is too low is solved, and the highest point of the middle connecting rod cannot exceed the foot placing part to influence the foot placing.
Specifically, when the low-seat seating unit is in the extended position, the height difference between the first hinge point and the third hinge point ranges from 20mm to 60mm, in this embodiment 40 mm. And the height difference between the first hinge point and the hinge point between the first leg rest connecting rod and the leg rest is 10-60mm, in this embodiment 40 mm.
Further, the distance between the first hinge point and the second hinge point at the two ends of the first intermediate link 25 is 160 mm and 200mm, in this embodiment 180 mm. The distance between the second hinge point and the third hinge point at both ends of the second intermediate link 26 is 80-120mm, in this embodiment 100 mm. In addition, the range of the radius of rotation of the second seat plate link 22 when it is connected to the seat plate 12 in the present invention is 90-150mm, in this embodiment 120mm, and the adjustment process of the whole adjustment device is more stable and reasonable by setting the above size range.
The motion process is as follows: when the sitting posture adjustment device is changed from the extended posture of fig. 4 to the retracted posture of fig. 6, the first seat plate link 21 and the second seat plate link 22 are relatively rotated with respect to the seat plate 12, while the second seat plate link 22 arranged below defines the lowest point which the whole sitting posture adjustment device may encounter in a downward movement, and the second seat plate link is correspondingly shortened by introducing the first intermediate link 25 and the second intermediate link 26. In the process of contraction, the connecting rods are mutually folded, and the leg rest support 13 can be lifted higher in the final state.
In addition, in order to limit the adjusting position, the transmission connecting mechanism further comprises a limiting connecting rod 27 and a limiting bracket 28, one end of the limiting connecting rod 27 is hinged with the first seat plate connecting rod 21, the other end of the limiting connecting rod 27 is hinged with the limiting bracket 28, and the limiting bracket is connected with the rear mounting bracket 11 and the seat plate 12.
The sitting posture adjusting device also comprises a base component which is used for being connected with the base.
In order to increase the swing function in the contracted posture and ensure that the base assembly does not swing in the extended posture, further, the base assembly 30 further comprises a limit pin 31, the transmission connecting mechanism 20 further comprises a limit connecting member 29, a limit groove matched with the limit pin 31 is arranged on the limit connecting member 29, and when the sitting posture adjusting device is in the contracted posture, the limit groove is separated from the limit pin 31, as shown in fig. 6; when the low-seat unit is in the extended position, the limit groove is engaged with the limit pin 31.
Example 2:
the rest of the arrangement of this embodiment is the same as that of embodiment 1, and the difference is that the other end of the first seat plate connecting rod and the other end of the first footrest support connecting rod are also respectively connected with the middle connecting rod, so that the length of the first seat plate connecting rod is correspondingly reduced. And specifically, be equipped with two intermediate link between the other end of second seat board connecting rod and the other end of second bracket connecting rod, be equipped with two intermediate link between the other end of first seat board connecting rod and the other end of first bracket connecting rod.
Example 3:
the base component is provided with a slide rail, and the seat plate swings relative to the slide rail through the transmission connecting mechanism. In other embodiments, the base assembly is provided with a roller for swinging, and the seat plate is connected with the roller for swinging through a transmission connecting mechanism.
Example 4:
in this embodiment, a base is also included for supporting the entire seating unit, and as shown in fig. 8, the sitting posture adjustment device is secured to the base 40 by the base assembly 30, wherein the base 40 is a rotatable base.
In addition, the low-seat seating unit provided in all embodiments may be applied to furniture sofas, lounge chairs, theater or hospital seats, vehicle seats, and the like.
According to the plurality of embodiments, through the design of the transmission connecting mechanism, when the low-seat unit is switched to be in a posture, the connecting rod of the transmission connecting mechanism cannot rub the base or the ground, the leg rest support is high enough to be away from the ground in a contraction state, and the technical problem that the low-seat unit is easy to rub and damage is solved.
Although the present invention has been described in connection with the preferred embodiments, it is not intended to limit the invention to the embodiments described herein, but rather, to include various changes and modifications without departing from the scope of the invention.
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.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (18)
1. A sitting posture adjusting device for a low-seat seating unit is characterized in that,
the sitting posture adjusting device comprises a rear mounting bracket (11), a seat plate (12) and a leg rest bracket (13);
the rear mounting bracket (11) is used for adjusting the posture of a backrest (1) of the low seat unit, the seat plate (12) is arranged between the rear mounting bracket (11) and the leg rest bracket (13) and is used for adjusting the posture of a seat part (2) of the low seat unit, and the leg rest bracket (13) is used for adjusting the posture of a foot placing part (3) of the low seat unit;
the sitting posture adjusting device further comprises a transmission connecting mechanism (20), wherein the transmission connecting mechanism (20) is used for connecting the rear mounting bracket (11), the seat plate (12) and the leg rest bracket (13) in a transmission manner; the transmission connecting mechanism comprises a first seat plate connecting rod (21), a second seat plate connecting rod (22), a first leg rest bracket connecting rod (23) and a second leg rest bracket connecting rod (24); one end of the first seat plate connecting rod (21) and one end of the second seat plate connecting rod (22) are respectively hinged with the seat plate (12), and one end of the first footrest bracket connecting rod (23) and one end of the second footrest bracket connecting rod (24) are respectively hinged with the footrest bracket (13);
the transmission connecting mechanism (20) further comprises an intermediate connecting rod, and the other end of the second seat plate connecting rod (22) and the other end of the second leg rest support connecting rod (24) are respectively connected with the intermediate connecting rod.
2. A sitting posture adjustment arrangement for a low seat unit as claimed in claim 1, wherein the other end of the first seat pan link (21) is connected to the other end of the first leg rest bracket link (23); the number of the intermediate connecting rods is two, and the two intermediate connecting rods are respectively a first intermediate connecting rod (25) and a second intermediate connecting rod (26); the other end of the second seat plate connecting rod (22) is hinged to one end of the first middle connecting rod (25) at a first hinged point, the other end of the first middle connecting rod (25) is hinged to one end of the second middle connecting rod (26) at a second hinged point, and the other end of the second middle connecting rod (26) is hinged to the other end of the second leg rest support connecting rod (24) at a third hinged point.
3. A sitting posture adjustment arrangement for a low-seat seating unit as claimed in claim 2, wherein the first hinge point is higher than the third hinge point when the low-seat seating unit is in the extended position.
4. A sitting posture adjustment arrangement for a low-seat seating unit as claimed in claim 3, wherein the difference in height between the first and third points of articulation is in the range of 20mm-60mm when the low-seat seating unit is in the extended position.
5. A sitting posture adjustment arrangement for a low seat unit as claimed in claim 2 or 3, characterized in that the first hinge point is not higher than the hinge point of the first leg rest link (23) with the leg rest (13) when the low seat unit is in the extended position.
6. A sitting posture adjustment arrangement for a low-seat seating unit according to claim 5, characterized in that the difference in height between the first hinge point and the hinge point of the first leg rest link (23) and the leg rest (13) is in the range of 10-60 mm.
7. A sitting posture adjustment arrangement for a low-profile seating unit as claimed in claim 2, wherein the first seat pan link (21) is hinged to the first intermediate link (25) at a fourth hinge point between the ends of the first seat pan link (21) and the first intermediate link (25); the first leg rest support connecting rod (23) is hinged to the second middle connecting rod (26) at a fifth hinge point, and the fifth hinge point is located between two ends of the first leg rest support connecting rod (23) and between two ends of the second middle connecting rod (26).
8. The sitting posture adjusting apparatus for a low-seat unit as claimed in claim 2, wherein the distance between the first hinge point and the second hinge point at both ends of the first intermediate link (25) is 160-200mm, and the distance between the second hinge point and the third hinge point at both ends of the second intermediate link (26) is 80-120 mm.
9. A sitting posture adjustment arrangement for a low-profile seating unit as claimed in claim 1, wherein the second seat pan link (22) has a radius of rotation in the range of 90-150mm when attached to the seat pan (12).
10. A sitting posture adjustment arrangement for a low-seat seating unit as claimed in claim 1, wherein the transmission linkage further comprises a limit link (27) and a limit bracket (28), one end of the limit link (27) being hinged to the first seat pan link (21), the other end of the limit link (27) being hinged to the limit bracket (28), the limit bracket (28) being connected to the rear mounting bracket (11) and/or the seat pan (12).
11. A sitting posture adjustment arrangement for a low seat unit as claimed in claim 1, wherein the other end of the first seat pan link (21) and the other end of the first leg rest support link (23) are connected to the intermediate link, respectively.
12. A sitting posture adjustment arrangement for a low seat unit as claimed in claim 2, wherein two intermediate links are provided between the other end of the second seat pan link (22) and the other end of the second leg rest link (24), and two intermediate links are provided between the other end of the first seat pan link (21) and the other end of the first leg rest link (23).
13. A low seat unit, characterized in that it comprises a backrest (1), a seat (2), a footrest (3) and a sitting position adjusting device as claimed in any one of claims 1-12.
14. A low seat unit as claimed in claim 13 further comprising a base (40), the sitting posture adjustment means comprising a base assembly (30), the base assembly (30) being connected to the base (40).
15. The low seat unit of claim 14, wherein the sitting position adjustment means is adapted to adjust the low seat unit to a retracted position, an extended position and a recumbent position, wherein the foot rest portion is at a lowermost point and the seat pan (12) is swingable relative to the base assembly (30).
16. The low-seat seating unit according to claim 15, wherein the base assembly (30) further comprises a limit pin (31), the transmission connection mechanism (20) comprises a limit connection member (29), a limit groove engaged with the limit pin (31) is formed on the limit connection member (29), and the limit groove is disengaged from the limit pin (31) when the low-seat seating unit is in the retracted position; the low seat unit is located when stretching the appearance or lying the appearance, the spacing groove with spacer pin (31) joint.
17. The low-seat seating unit according to claim 14, wherein the base (40) is a rotatable base or a fixed base.
18. The low-seat seating unit according to claim 14, wherein the base (40) is a stationary base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415483.XU CN210696746U (en) | 2019-03-29 | 2019-03-29 | Sitting posture adjusting device for low-seat unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920415483.XU CN210696746U (en) | 2019-03-29 | 2019-03-29 | Sitting posture adjusting device for low-seat unit |
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| Publication Number | Publication Date |
|---|---|
| CN210696746U true CN210696746U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920415483.XU Active CN210696746U (en) | 2019-03-29 | 2019-03-29 | Sitting posture adjusting device for low-seat unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110037463A (en) * | 2019-03-29 | 2019-07-23 | 锐迈机械科技（吴江）有限公司 | A kind of sitting posture regulating device for low seat seating unit |
-
2019
- 2019-03-29 CN CN201920415483.XU patent/CN210696746U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110037463A (en) * | 2019-03-29 | 2019-07-23 | 锐迈机械科技（吴江）有限公司 | A kind of sitting posture regulating device for low seat seating unit |
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